2013年第44卷 增刊2 共收錄55篇
6. Accession number:20134616980243
Title:Critical techniques of virtual assembly for combine harvester chassis based on virtual reality
Authors:Zhu, Zhongxiang1 ; Chen, Li1 ; Li, Shanshan1 ; Liu, Bo1 ; Song, Zhenghe1 ; Mao, Enrong1
Author affiliation:1 Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China
Corresponding author:Mao, E. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:262-267
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The technologies of virtual assembly for combine harvester chassis parts were studied and the virtual reality assembly was realized. The 3-D models of the combine harvester chassis parts were created by Pro/E, and then were converted into the virtual reality models with the model conversion interface between the CAD system and the virtual assembly system. The assembly model composed of assembly object information, assembly hierarchy information and assembly constraint information was built in the virtual reality system. By using virtual reality system and the ART tracking system together, the interactive assembly of combine harvester chassis was achieved. At the same time, the interchangeability assembly method, the usage of assembly tool, and the records and optimization of assembling path were studied. With the EON software and its secondary development tool, the virtual assembly experiment of the combine harvester chassis parts were carried out. The result indicated the methods mentioned above could work availably.
Number of references:12
Main heading:Computer aided design
Controlled terms:Chassis - Harvesters - Human computer interaction - Tools - Virtual reality
Uncontrolled terms:Assembly paths - Assembly tool - Combine harvesters - Secondary development - Virtual assembly - Virtual assembly systems - Virtual reality models - Virtual reality system
Classification code:821.1 Agricultural Machinery and Equipment - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 663.2 Heavy Duty Motor Vehicle Components - 605 Small Tools and Hardware - 603 Machine Tools - 461.4 Ergonomics and Human Factors Engineering
DOI:10.6041/j.issn.1000-1298.2013.S2.049
Database:Compendex
7. Accession number:20134616980244
Title:Rapid design reasoning method for crawler harvester transmission system
Authors:Song, Zhenghe1 ; Bi, Shuqin1 ; Jin, Xiaoping1 ; Zhu, Zhongxiang1 ; Mao, Enrong1
Author affiliation:1 Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China
Corresponding author:Mao, E. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:268-272
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The design process and features of design knowledge of crawler harvester transmission were analyzed comprehensively. Then, the reasoning process suitable for the rapid design of crawler harvester transmission was researched. Taking the instance similarity matching algorithm as the core, the case-based reasoning (CBR) was designed. And taking the constructed design knowledge base of crawler harvester transmission as a core, the rule-based reasoning (RBR) method was studied. Also the CBR and RBR hybrid reasoning method was designed. On the basis of all these, the inference mechanism of crawler harvester transmission rapid design system was established. Practical applications showed that this reasoning method could better achieve the crawler harvester transmission rapid design and shorten the design cycle.
Number of references:10
Main heading:Harvesters
Controlled terms:Knowledge based systems - Product design
Uncontrolled terms:Casebased reasonings (CBR) - Hybrid reasonings - Inference mechanism - Reasoning methods - Reasoning process - Rule based reasoning - Similarity matching algorithms - Transmission systems
Classification code:723.4.1 Expert Systems - 821.1 Agricultural Machinery and Equipment - 913.1 Production Engineering
DOI:10.6041/j.issn.1000-1298.2013.S2.050
Database:Compendex
10. Accession number:20134616980241
Title:Effects of low-temperature plasma on characteristics of wheat seedling
Authors:Shao, Changyong1, 2 ; You, Yong1 ; Wang, Guanghui1 ; Liu, Liangdong1 ; Fang, Xianfa3 ; Wang, Decheng4
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Shandong Province Seeds Group Co., Ltd., Ji'nan 250100, China
3 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
4 Key Lab. of Soil-Machine-Plant System of Chinese Agriculture Ministry, China Agricultural University, Beijing 100083, China
Corresponding author:Wang, D. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:251-255
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The non-ionizing radiation processing with 20 s was treated on wheat seeds by using low-temperature plasma (LTP). The effect of the proposed technology on seed germination and seedling growth was analyzed. The effects of different intensities of LTP on wheat seeds (45 d after treated by LTP) were investigated to determine the optimal conditions. The germination energy and germination rate were obtained. Also, the samples were sowed in field to investigate the characteristics of seeds. The results showed that the germination energy and germination rate increased by 11.25% and 5.56% respectively for the treatment intensity of 80 W. The green weight, dry weight, root length and maximum tillers of seeds in double ridge stage were increased by 13.02%, 6.00%, 15.20%, and 38.46% compared with contrast.
Number of references:20
Main heading:Seed
Controlled terms:Cultivation - Ionizing radiation - Plasmas - Temperature
Uncontrolled terms:Germination energy - Germination rates - Low temperature plasmas - Nonionizing radiation - Optimal conditions - Seed germination - Wheat seedlings - Wheat seeds
Classification code:641.1 Thermodynamics - 711 Electromagnetic Waves - 821.3 Agricultural Methods - 821.4 Agricultural Products - 932.3 Plasma Physics
DOI:10.6041/j.issn.1000-1298.2013.S2.047
Database:Compendex
14. Accession number:20134616980240
Title:Vegetation monitoring and analyzing of Golden Triangle energy in Inner Mongolia, Shaanxi, Gansu, and Ningxia Region
Authors:Sun, Gang1, 2 ; Wan, Huawei3 ; Wang, Changzuo3 ; Wang, Xiu4
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
3 Satellite Environmental Application Center, Ministry of Environmental Protection, Beijing 100087, China
4 Beijing Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China
Corresponding author:Wan, H. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:247-250
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The "Golden Triangle" of MSGN (Inner Mongolia, Shaanxi, Gansu, Ningxia), a region with abundant energy resources, is a new energy base of China. To get the vegetation coverage status and its dynamic change, the 2000-2009 SPOT-VEGTATION NDVI (normalized difference vegetation index) of Golden Triangle energy in MSGN region was used to calculate the maximum vegetation coverage in one-year of every pixel, and the variation between ten years was analyzed. Result showed that the FVC (fractional vegetation cover) in Golden Triangle area was increased generally from 2000 to 2009. The highest average value was 45.45% in 2008, and the lowest average value was 33.74% in 2000. The vegetation coverage was declined slightly in 2005 and 2009, and the main reasons were attributed to city expansion and regional resources development.
Number of references:10
Main heading:Vegetation
Controlled terms:Energy resources - Gold - Remote sensing
Uncontrolled terms:Dynamic changes - Dynamic monitoring - Fractional vegetation cover - Golden Triangle energy area - Normalized difference vegetation index - Regional resources - Vegetation coverage - Vegetation monitoring
Classification code:525.1 Energy Resources and Renewable Energy Issues - 547.1 Precious Metals - 731.1 Control Systems
DOI:10.6041/j.issn.1000-1298.2013.S2.046
Database:Compendex
18. Accession number:20134616980248
Title:Stability analysis of hilly power platform with balance rocker suspension
Authors:Gao, Qiaoming1 ; Gao, Feng1 ; Zhou, Wenhai2 ; Xu, Guoyan1 ; Ding, Nenggen1
Author affiliation:1 School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
2 Department of Automobile Engineering, Liuzhou Vocational and Technical College, Liuzhou 545005, China
Corresponding author:Gao, F. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:288-294 300
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The VII-HPC power platform with the balance rocker suspension, variable ground clearance and variable wheel track was designed to meet special needs in the hilly regions. Variations of ground clearance, wheel track, and attitude of the VII-HPC power platform were studied by employing traditional approaches. The formula, boundary conditions and the corresponding curves on centroid height changing trends, sideslip and rollover, longitudinal slip and turning were summarized. Its stability was verified better than the ordinary tractor by simulation analysis.
Number of references:15
Main heading:Suspensions (components)
Controlled terms:Wheels
Uncontrolled terms:Corresponding curve - Ground clearance - Rocker suspension - Simulation analysis - Stability analysis - Traditional approaches - Variable attitude - Wheel track
Classification code:601.2 Machine Components
DOI:10.6041/j.issn.1000-1298.2013.S2.054
Database:Compendex
20. Accession number:20134616980229
Title:Medium and short wave infrared drying characteristics and color changing of apple slices
Authors:Ju, Haoyu1 ; Xiao, Hongwei1 ; Bai, Junwen1 ; Xie, Long1 ; Lou, Zheng1 ; Gao, Zhenjiang1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Gao, Z. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:186-191
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to improve the drying quality of apple slices and shorten the drying time, medium and short wave infrared was applied to drying apple slices. The drying experiments were investigated under different drying temperatures, slice thicknesses and radiation distances. Experimental results showed that the drying temperature had a significant influence on the drying processing, while the slices thickness was less significant and the radiation distance was the last. The whole drying procedure appeared a falling rate period. According to Fick's Second Law, the water effective diffusion coefficient (Deff) was worked out. In medium and short wave infrared drying condition, the Deff ranged from 2.85×10-10 m2/s to 7.24×10-10 m2/s. The activation energy determined from Arrhenius equation was 36.58 kJ/mol. On the other hand, drying temperature had a marked impact on the color changing, while the slices thickness and radiation distance had a little influence on color value. Both high L* value and drying efficiency were ensured when the drying temperatures was 70°C, slice thickness was 5 mm and the radiation distance was 80 mm.
Number of references:26
Main heading:Color
Controlled terms:Activation energy - Diffusion - Fruits - Infrared drying - Infrared radiation
Uncontrolled terms:Apple slices - Arrhenius equation - Color values - Drying characteristics - Drying temperature - Effective diffusion coefficients - Falling-rate period - Short wave infrared
Classification code:642.1 Process Heating - 741.1 Light/Optics - 821.4 Agricultural Products - 931.1 Mechanics - 931.3 Atomic and Molecular Physics
DOI:10.6041/j.issn.1000-1298.2013.S2.035
Database:Compendex
21. Accession number:20134616980203
Title:Design of combined rape threshing device and analysis of rape cane movement trail
Authors:Zong, Wangyuan1 ; Liao, Qingxi1 ; Huang, Peng1 ; Li, Haitong1 ; Chen, Li1
Author affiliation:1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Liao, Q. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:41-46
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A tangential-longitudinal axial combined threshing and separating device was designed in order to reduce the loss of the rape when harvested. Kinematic analysis and high speed photograph were carried out on the course of the material flowed into the entrance of longitudinal roller, and the simulation analysis on the movement characteristics of rape cane moved in the longitudinal roller was done also by using the software ADAMS. The result showed that the materials could be flowed smoothly when the installing angle of longitudinal roller was 20° and the initial phase angle of telescopic tooth mechanism was 0°. The trajectory of rape cane moved in the longitudinal roller was a spiral along the inner wall of the roller shell. The impact between rape cane and teeth occurred in the radial plane.
Number of references:19
Main heading:Rollers (machine components)
Controlled terms:Agriculture - Computer software - Machinery
Uncontrolled terms:High speed photographs - Kinematic Analysis - Movement characteristics - Rape - Roller shells - Simulation analysis - Software ADAMS - Threshing and separating
Classification code:601 Mechanical Design - 601.2 Machine Components - 723 Computer Software, Data Handling and Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.6041/j.issn.1000-1298.2013.S2.009
Database:Compendex
22. Accession number:20134616980226
Title:Correlation of damage degree and electrical conductivity for homogenized wheat starch
Authors:Qiu, Shuang1 ; Chen, Hao1 ; Fan, Yuntao2 ; Han, Qinghua2 ; Yin, Lijun1
Author affiliation:1 College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author:Yin, L. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:172-176
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The starch damaging, gelatinization properties and electrical conductivity were investigated during ohmic heating for soft wheat starch suspension (5%) after a homogenization treatment at a series of pressures ranging from 20 to 60 MPa. DSC analysis indicated that gelatinization properties varied insignificantly (gelatinization degree was 1.80% at 60 MPa), and microscopy showed that most treated starch granules stayed originally. As a result, the amount of damaged starch of homogenized starch suspensions ascended from 6.56% to 7.96%. The electrical conductivity of native starch suspension increased linearly during ohmic heating. Slopes of electrical conductivity-temperature curve of homogenized starch suspensions during ohmic heating highly correlated to the amount of damaged starches in the suspensions.
Number of references:20
Main heading:Starch
Controlled terms:Electric conductivity - Gelation - Homogenization method
Uncontrolled terms:Damaged starch - Electrical conductivity - Gelatinization properties - Highly-correlated - Homogenization treatment - Starch granules - Starch suspension - Wheat starch
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 802.3 Chemical Operations - 804.1 Organic Compounds - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2013.S2.032
Database:Compendex
27. Accession number:20134616980221
Title:Effect of gas guide measurement and leachate-recirculation on gas production from dry fermentation
Authors:Du, Jing1 ; Zhu, Dewen2 ; Qian, Yuting1 ; Chen, Yongsheng2 ; Chen, Guangyin1 ; Chang, Zhizhou1
Author affiliation:1 Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Nanjing 210014, China
2 Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
Corresponding author:Chang, Z. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:143-148
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to obtain the engineering control measures helpful to improve the dry fermentation efficiency, taking fresh cow dung and rice straws as raw materials, the effect of gas guide measurement and leachate-recirculation on gas production from dry fermentation was analyzed under the conditions of room temperature (ambient temperature of 22-36°C) and the total solid concentration of 16%. The results indicated that biogas efficiency was improved through regulation measures including laying vertical and horizontal vent-tubes. The average volume of biogas yield was up to 0.36 m3/(m3·d) (the gas yield with raw materials was 155 m3/t of total solid), higher than the comparison garage (0.28 m3/(m3·d), the gas yield with raw materials was 120 m3/t of TS) in the whole fermentation cycle (86 d). From the effect of leached with fermentation materials, it was concluded that the garage by returning spray digestive liquid every day was more effective. Furthermore, the equal flow distribution with spray device, matching of the pump selection and layout of return pipe should be in-depth researched.
Number of references:25
Main heading:Fermentation
Controlled terms:Biogas - Garages (parking)
Uncontrolled terms:Air guides - Dry fermentation - Engineering controls - Garage-type - Leachates
Classification code:402.2 Public Buildings - 522 Gas Fuels - 802.2 Chemical Reactions
DOI:10.6041/j.issn.1000-1298.2013.S2.027
Database:Compendex
32. Accession number:20134616980196
Title:Monitoring method and device for cleaning loss of combine harvester
Authors:Li, Yaoming1 ; Chen, Yi1 ; Zhao, Zhan1 ; Xu, Lizhang1
Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Li, Y. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:7-11
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to improve the field working performance, a kind of monitoring device for cleaning loss of combine harvester was proposed which primarily consisted of a monitoring sensor, signal conditioning circuit and an indicator. The results showed that the monitoring method and device for cleaning loss of combine harvester performed well. When the forward speed was 0.8 m/s, the error was 3.57%. Through the application of device during field work, the operator was informed of real-time cleaning loss by using indicator light and alarm.
Number of references:17
Main heading:Cleaning
Controlled terms:Harvesters - Monitoring - Piezoelectric ceramics - Signal conditioning circuits
Uncontrolled terms:Cleaning loss - Combine harvesters - Forward speed - Monitoring device - Monitoring methods - Monitoring sensors - Piezoceramic - Working performance
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 821.1 Agricultural Machinery and Equipment - 802.3 Chemical Operations - 722.4 Digital Computers and Systems - 812.1 Ceramics
DOI:10.6041/j.issn.1000-1298.2013.S2.002
Database:Compendex
33. Accession number:20134616980201
Title:Field reciprocating cutting test bench for corn stalks
Authors:Jiang, Tao1 ; Hou, Jialin1 ; Li, Tianhua2 ; Shao, Yuanyuan2 ; Wang, Zhen3 ; Liu, Lin3
Author affiliation:1 Mechanical and Electronic Engineering College, Shandong Agricultural University, Taian 271018, China
2 Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271018, China
3 Key Lab. in University of Shandong Province of Intelligent Agricultural Machinery and Equipment, Shandong Agricultural University, Taian 271018, China
Corresponding author:Hou, J. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:32-36
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to research the factors that affect the corn stalk cutting force and cutting power consumption, field reciprocating cutting test bench for crop stalks was developed. The test bench could switch to a different shape of the blade. The cutting speed could be adjusted in a range of 0-2.5 m/s. The cutting angle could be adjusted in a range of 0°-35°. The curves of cutting force changed with time were obtained by the experiment. The cutting power consumption was calculated according to these curves. The effect of blade shape, blade opening angle, cutting speed and cutting angle on the cutting force and power consumption were analyzed. The experimental results showed that the error of test bench data was less than 1.12%. With the increasing of cutting speed and cutting angle, the maximum cutting force and cutting power consumption were both decreased gradually. The cutting force of zigzag blade was smaller than that of smooth blade. The cutting force of 20° cutting angle was smaller than that of the other angle.
Number of references:16
Main heading:Cutting
Controlled terms:Control systems - Cutting tools
Uncontrolled terms:Corn stalk - Cutting angles - Cutting forces - Cutting power - Cutting speed - Different shapes - Maximum cutting force - Test benches
Classification code:604.1 Metal Cutting - 605 Small Tools and Hardware - 731.1 Control Systems
DOI:10.6041/j.issn.1000-1298.2013.S2.007
Database:Compendex
35. Accession number:20134616980234
Title:Development and application of a smart apparatus for detecting crop nutrition
Authors:Zhong, Zhenjiang1 ; Li, Minzan1 ; Sun, Hong1 ; Wu, Lixuan1 ; Wu, Qian1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
Corresponding author:Li, M. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:215-219
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to real-time detect crop nutrition content, a smart apparatus for detecting crop nutrition was developed based on NIR spectroscopy, electronics and ZigBee wireless communication technology. It was designed to work as a wireless sensor network with one control unit and several optical sensor nodes. The incident sunlight and reflective light from crop canopy were measured at the wavebands of 550 nm, 650 nm, 766 nm and 850 nm respectively, and then the canopy reflectance and some vegetative indices were calculated. The field experiments and analyses on crop growth monitoring in wheat fields were conducted. Results showed that the correlation coefficient between NDVI and chlorophyll content was higher than RVI. The chlorophyll content and the vegetation index which was calculated with the reflectance at 550 nm and 766 nm had the highest correlation coefficients (r was 0.6939), and the prediction model of chlorophyll content was built. The r2 of the calibration model reached to 0.494, and r2 of the predicted model reached to 0.478.
Number of references:10
Main heading:Crops
Controlled terms:Chlorophyll - Near infrared spectroscopy - Nutrition - Reflection - Sensor nodes - Vegetation - Wireless telecommunication systems - Zigbee
Uncontrolled terms:Calibration model - Canopy reflectance - Chlorophyll contents - Correlation coefficient - Development and applications - Intelligent detection - Vegetation index - ZigBee wireless communication
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 801.2 Biochemistry - 801 Chemistry - 722.3 Data Communication, Equipment and Techniques - 821.4 Agricultural Products - 722 Computer Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 711 Electromagnetic Waves - 461.7 Health Care - 717 Optical Communication
DOI:10.6041/j.issn.1000-1298.2013.S2.040
Database:Compendex
36. Accession number:20134616980205
Title:Experiment of wheat supported threshing apparatus based on free-cutting harvest
Authors:Zhou, Hao1 ; Shi, Qingxiang1 ; Geng, Lingxin1 ; Ma, Meng1 ; Yuan, Huajie1 ; Li, Yuhang1
Author affiliation:1 Vehicle and Motive Power Engineering College, Henan University of Science and Technology, Luoyang 471003, China
Corresponding author:Shi, Q. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:52-56 31
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:By using the self-designed threshing apparatus test-bed, single-factor tests of roller-speed and tooth-angle were carried out and the values of these two factors were obtained. On this basis, the three factors orthogonal test, including the speed of the roller, the mesh aperture and the thresh gap, was researched. The two factors regression experiment, including the roller speed and the thresh gap, was also studied. Optimum parameter combination of threshing apparatus was obtained. When the mesh aperture was 14 mm, tooth angle was 0°, thresh gap was 18.5 mm, roller speed was 927 r/min and roller length was 700 mm, the threshing loss rate was 2.71% and the trash content was 19.20%.
Number of references:13
Main heading:Agriculture
Controlled terms:Experiments - Rollers (machine components)
Uncontrolled terms:Loss rates - Optimum parameters - Orthogonal test - Roller speed - Supported - Threshing apparatus - Wheat
Classification code:601.2 Machine Components - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2013.S2.011
Database:Compendex
38. Accession number:20134616980219
Title:Comparison of wet and dry anaerobic fermentation and influencing factors analysis for mushroom residue
Authors:Ai, Ping1 ; Wang, Dianlong1 ; Xin, Ya1 ; Dou, Zipeng1 ; Zhang, Yanlin1
Author affiliation:1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Ai, P. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:130-135
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to improve the utilization efficiency of mushroom cultivation waste, mushroom residue was used as raw material for fermentation to conduct anaerobic digestion experiments with wet fermentation of 7% TS mass fraction and dry fermentation of 16.5%-23.6% TS mass fraction. The results showed that the experimental groups at the ratio of 1:0 and 2:1 could gain better effect of gas production in wet fermentation, and the gas production rate were 301.25 mL/g and 300.60 mL/g respectively. The dry fermentation reaction could not be started at medium temperature of 35°C, the rate of inoculation less than 30% and the TS mass fraction higher than 19.1%. Under the TS mass fraction of 19.1% condition, the reaction could be started successfully and the highest gas production rate of 328.90 mL/g was got with high temperature of 55°C. The gas production rate was 112.40 mL/g at temperature of 45°C. The experimental results showed that mushroom residue had a high potential. The high temperature fermentation of 55°C could avoid the acidification at dry fermentation, and the gas production rate was better than the rate of wet fermentation.
Number of references:26
Main heading:Fermentation
Controlled terms:Anaerobic digestion - Methane
Uncontrolled terms:Anaerobic fermentation - Dry fermentation - Experimental groups - Influencing factors analysis - Medium temperature - Mushroom cultivation wastes - Mushroom residue - Utilization efficiency
Classification code:452.4 Industrial Wastes Treatment and Disposal - 522 Gas Fuels - 802.2 Chemical Reactions
DOI:10.6041/j.issn.1000-1298.2013.S2.025
Database:Compendex
40. Accession number:20134616980208
Title:Type-L cleaning separation mechanism of peanut combine harvester
Authors:Wang, Dongwei1 ; Shang, Shuqi1 ; Li, Xiang1 ; Gao, Dexing2
Author affiliation:1 School of Electrical and Mechanical Engineering, Qingdao Agricultural University, Qingdao 266109, China
2 Qingdao Hongsheng Autocar Fittings Co., Ltd., Qingdao 266709, China
Corresponding author:Shang, S. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:68-74 51
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A type-L conveyor cleaning separation mechanism was designed. Virtual prototype model was established by using dynamics simulation software ADAMS. Based on the analysis of single fruit pods-screen surface, much fruit pods-screen surface and pod group-screen surface contact impact, the average impact load was obtained which affect the size of screen below. The movement rule of peanuts collision was analyzed. Results showed that the proposed mechanism could better complete conveyor cleaning separation operation under the given conditions.
Number of references:23
Main heading:Cleaning
Controlled terms:Computer simulation - Computer software - Conveyors - Fruits - Harvesters - Oilseeds - Separation
Uncontrolled terms:Combine harvesters - Dynamics simulation - Impact loads - Peanut - Separation mechanism - Surface contact - Virtual prototype models
Classification code:692.1 Conveyors - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 802.3 Chemical Operations - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products
DOI:10.6041/j.issn.1000-1298.2013.S2.014
Database:Compendex
43. Accession number:20134616980231
Title:Design of intelligent control system for micro plant factory
Authors:Ai, Haibo1 ; Wei, Jinhong1 ; Qiu, Quan2 ; Zheng, Wen'gang2
Author affiliation:1 Institute of Mechatronics Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2 Beijing Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China
Corresponding author:Qiu, Q. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:198-204
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:An intelligent control system for micro plant factory was designed based on embedded technology, which took the STM32 microprocessor as its core control part and programmed in the μC/OS-II environment. Furthermore, the real-time display and accurate control of environmental factors (temperature, humidity, light, etc) in the micro plant factory were achieved by the control system. In order to control the temperature and humidity, a fuzzy control and fuzzy decoupling method for the control of the temperature and humidity was proposed which could solve the problem of long time delay and strong coupling between them. It had high practicability.
Number of references:13
Main heading:Humidity control
Controlled terms:Delay control systems - Fuzzy control - Intelligent control - Temperature control
Uncontrolled terms:Decoupling - Embedded technology - Environmental factors - Fuzzy decoupling - Microplants - Real time display - Stm32 microprocessors - Temperature and humidities
Classification code:402 Buildings and Towers - 731 Automatic Control Principles and Applications - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2013.S2.037
Database:Compendex
47. Accession number:20134616980218
Title:Effect of white-rot fungi pretreatment on methane production from anaerobic digestion of corn stover
Authors:Liu, Shan1, 2 ; Wu, Shubiao1 ; Zhang, Wanqin1 ; Pang, Changle1 ; Deng, Yu2 ; Dong, Renjie1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Chengdu 610041, China
Corresponding author:Pang, C. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:124-129 142
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The microbial pretreatment of yellow corn stover and corn stover silage was achieved via the solid-state cultivation of white-rot fungi. Pretreatment effects on the biodegradability and subsequent anaerobic production of methane were investigated. The white-rot fungi pretreatment of yellow corn stover was accompanied by 38.3% cellulose, 42.2% hemicellulose, and 39.1% lignin degradation, while the degradation of corn stover silage was 9.9% cellulose, 23.2% hemicellulose, and 15.2% lignin. The reducing sugar yield of pretreatment yellow corn stover and corn stover silage after enzymatic hydrolysis was 195.8 mg/g and 67.7 mg/g respectively. These indicated much more composition of yellow corn stover was degradated, and more available composition retained in the corn stover silage after pretreated.The results showed that the total VS methane production of pretreated corn stover silage was 215.5 mL/g after 21 d anaerobic digestion, which increased by 29.2% more than the untreated ones and accounting 73.1% for 60 d total methane production. The biogas production of pretreated yellow corn stover was not increased. So microbial pretreatment of corn stover silage by white-rot fungi could increase substrate biodegradability, and further stimulate methane production.
Number of references:18
Main heading:Substrates
Controlled terms:Anaerobic digestion - Biodegradation - Cellulose - Enzymatic hydrolysis - Fungi - Lignin - Methane
Uncontrolled terms:Biogas production - Corn stover - Lignin degradation - Methane production - Pre-Treatment - Pretreatment effects - Solid-state cultivation - White rot fungi
Classification code:461 Bioengineering and Biology - 522 Gas Fuels - 801 Chemistry - 801.2 Biochemistry - 815.1.1 Organic Polymers
DOI:10.6041/j.issn.1000-1298.2013.S2.024
Database:Compendex
48. Accession number:20134616980239
Title:Design and experiment of automatic irrigation control system based on soil moisture meter
Authors:Yue, Xuejun1 ; Liu, Yongxin1 ; Hong, Tiansheng1 ; Wang, Yefu1 ; Quan, Dongping1 ; Chen, Zhuliang1
Author affiliation:1 College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Hong, T. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:241-246 250
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to improve the efficiency of water utilization in mountain orchards, an automatic irrigation control system based on soil moisture was designed. The system was composed of an S3C2440 ZigBee gateway, several CC2530 soil moisture sensing nodes and irrigation controlling nodes. In addition, solar batteries were applied to provide extra power and recharge lithium batteries. Using the self-organized ZigBee network, the gateway collected and updated soil moisture data to internet server for decision support. Therefore, irrigation process was handled according to soil moisture. The system test in a mountain orchard showed that the wireless network had a low packet loss rate (less than 15%), and maintained soil moisture in a suitable range (above 18%) for plant growth.
Number of references:20
Main heading:Soil moisture
Controlled terms:Control systems - Decision support systems - Experiments - Gateways (computer networks) - Irrigation - Orchards - Thermoelectricity - Zigbee
Uncontrolled terms:Automatic irrigation - Decision supports - Internet servers - Packet loss rates - Soil moisture sensing - Solar - Water utilization - ZigBee technology
Classification code:821.3 Agricultural Methods - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722.3 Data Communication, Equipment and Techniques - 901.3 Engineering Research - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 615.4 Thermoelectric Energy - 483.1 Soils and Soil Mechanics - 717 Optical Communication
DOI:10.6041/j.issn.1000-1298.2013.S2.045
Database:Compendex
52. Accession number:20134616980233
Title:Measurement of tomato plant stem angle based on digital image processing
Authors:Sun, Hong1 ; Li, Minzan1 ; Qian, Xiyan1 ; Zhang, Yane1 ; Yang, Wei1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
Corresponding author:Li, M. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:209-214
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to measure the morphological characteristics of crop non-destructively, the stem angle of tomato plant was measured by using digital image processing. The image of tomato plant was acquired in greenhouse and the image processing algorithm was discussed based on the geometric correction algorithm. The linear and bilinear model was applied and the results showed that the correlation coefficient (R2) between measurement of original image and plant was 0.50 with absence of geometric correction; when the linear and bilinear model was applied, the R2 was 0.625 and 0.723 separately. The corrected image was processed following the color space transformation, image segmentation, binary image filtering, straight line fitting and the angle calculation. The saturation image was selected and segmented by Otsu method. A good result was gained by combination the median filtering and close-open morphological method. After image thinning, the stems of the plant were simulated by straight lines based on least squares method. The angle between main stem and branch was calculated. The experiment result showed that there was linear relationship between the calculated by image processing technology and manual measurement with R2 of 0.703. The manual and automatic measurement result also showed good correlation with R2 of 0.985. It provided a method for the automatic measurement and analysis of tomato growth.
Number of references:16
Main heading:Measurements
Controlled terms:Fruits - Geometry - Image processing - Least squares approximations - Median filters
Uncontrolled terms:Auto-measurement - Color space transformation - Geometric correction - Image processing algorithm - Image processing technology - Morphological characteristic - Stem angle - Tomato growth status
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.6 Numerical Methods - 921 Mathematics - 821.4 Agricultural Products - 741 Light, Optics and Optical Devices - 703.2 Electric Filters
DOI:10.6041/j.issn.1000-1298.2013.S2.039
Database:Compendex
57. Accession number:20134616980212
Title:Structure simulation and performance experiment of yellow corn forage harvester
Authors:Zhao, Manquan1 ; Huang, Yan1
Author affiliation:1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author:Zhao, M. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:91-95
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Type 9HS-170 yellow corn forage harvester was designed and the overall structure and working principle of the machine was elaborated. The roller device and toss blower which were the core components of machine was analyzed. Trajectory of any point in circular arc section of work of moving blade was trochoidal, through the analysis of the theory of roller device. According to the mechanical properties of corn stalk, the corn stalk could be cut off to be suitable for livestock to chew in cases with fixed blade to cooperate and linear velocity of moving blade of 38.6 m/s. Moreover, peripheral speed of blade terminal was 35.7-42.8 m/s and there was secondary flow in toss tube, through numerical simulation and analysis of the air flow field of toss device by using the software of Fluent. Overall, the design of toss device was reasonable. The field experiment was conducted. The results showed that safety performance and operation performance of type 9HS-170 yellow corn forage harvester were good. The average productivity of machine was 0.7 hm2/h. The average loss rate was 2.8%. The stubble height was 87 mm. The bearing temperature rise was 7°C.
Number of references:22
Main heading:Hydraulic structures
Controlled terms:Agriculture - Harvesters - Mechanical properties - Rollers (machine components)
Uncontrolled terms:Bearing temperature - Field experiment - Operation performance - Performance experiment - Roller device - Simulation and analysis - Structure simulations - Toss device
Classification code:441 Dams and Reservoirs; Hydro Development - 601.2 Machine Components - 611 Hydroelectric and Tidal Power Plants - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 951 Materials Science
DOI:10.6041/j.issn.1000-1298.2013.S2.018
Database:Compendex
59. Accession number:20134616980214
Title:Design and experiment on reciprocating double knife shrub harvester
Authors:Liu, Zhigang1, 2 ; Wang, Decheng1 ; Zhai, Gaixia2 ; Liu, Guilin2 ; Zhang, Ning2 ; Hao, Xingyu2
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
Corresponding author:Wang, D. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:102-106
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Aiming at poor stubble quality, high loss cutting rate and winding leakage for cutting young and small diameter caragana microphylla of rotary cutter, a kind of reciprocating double knife shrub harvester was designed, which using double crank and rocker mechanism with no fast-returning characteristic to drive two sets of knives move and cut in opposite direction. The relation between the displacement, velocity and acceleration of the cutter with crank rotation angle was analyzed. And the double-acting blade cutting speed ratio was analyzed and tested. The results showed that it was best to harvest 2 years old caragana microphylla by the machine when the machine forward velocity was 1.0 m/s and cutting speed ratio was 1.6. The fraction defective of stubble height was 2.3%, the broken stubble rate was 3.3%, the miss cutting rate was 2.3%, the recutting rate was 2.7%, and the productivity was 0.38 hm2/h.
Number of references:10
Main heading:Harvesters
Controlled terms:Cutting - Design - Experiments
Uncontrolled terms:Crank and rocker mechanisms - Crank rocker - Crank-rotation - Cutting rate - Cutting speed - Double knife - Forward velocity - Rotary cutters
Classification code:408 Structural Design - 604.1 Metal Cutting - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2013.S2.020
Database:Compendex
61. Accession number:20134616980206
Title:Optimization of comb-type cotton picker device based on response surface methodology
Authors:Kang, Jianming1 ; Chen, Xuegeng1 ; Wen, Haojun1 ; Wang, Shiguo1
Author affiliation:1 Mechanical Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China
Corresponding author:Chen, X. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:57-61
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to find the optimal combination of the structure and working parameters of comb-type cotton picker harvesting device, the experiments were conducted. A central composite rotatable orthogonal experimental design of response surface methodology was employed to find the optimum combination effect on working properties. The three parameters, including working speed, comb space and vibration frequency of comb, were selected as input variables. Picking rate and loss rate were selected as response functions. Experimental results indicated that the most optimum combination region was: working speed of 0.45 m/s, comb space of 51 mm, and comb vibration frequency of 2.65 Hz, the picking rate was 96.5%, the loss rate was 2.8%.
Number of references:22
Main heading:Optimization
Controlled terms:Cotton - Experiments - Surface properties
Uncontrolled terms:Cotton pickers - Harvesting devices - Optimal combination - Optimum combination - Orthogonal experimental design - Response surface methodology - Structure and working parameters - Vibration frequency
Classification code:819.1 Natural Fibers - 901.3 Engineering Research - 921.5 Optimization Techniques - 951 Materials Science
DOI:10.6041/j.issn.1000-1298.2013.S2.012
Database:Compendex
64. Accession number:20134616980238
Title:Portable water turbidimeter based on NIR spectroscopy
Authors:Zhang, Qin1 ; Zheng, Lihua1 ; Li, Minzan1 ; Sun, Hong1 ; Zhang, Yao1 ; Mi, Xiuchen1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
Corresponding author:Zheng, L. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:236-240 235
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Turbidity of water was a very important parameter in aquaculture. An integrated portable turbidimeter was developed to measure turbidity of water body based on the comprehensive measurement method combined scattering light and transmission light. It used AT89S52 microcontroller as control chip and consisted of the light emission unit, detection unit and control unit. The light emission unit comprised two sets of 860 nm LED light source and the corresponding collimating lens. The detection unit comprised two photoelectric sensors. And the control unit included the light source driving circuit, the two-stage amplification circuit and the A/D conversion circuit. The integrated detector was calibrated in laboratory and carried out field experiments. The results showed that the turbidimeter achieved a high accuracy, the calibration Rc2 was 0.994 and the validation Rv2 was 0.999, with the resolution of 0.01 NTU and the error of ± 2%. It was concluded that the turbidimeter reached the practical level.
Number of references:11
Main heading:Light emitting diodes
Controlled terms:Analog to digital conversion - Aquaculture - Calibration - Detectors - Infrared devices - Light emission - Light sources - Light transmission - Near infrared spectroscopy - Turbidimeters - Turbidity
Uncontrolled terms:AT89s52 microcontroller - Comprehensive measurement - Integrated detectors - Integrated method - LED light source - NIR - NIR spectroscopy - Photoelectric sensors
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.3 Optical Instruments - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 914 Safety Engineering - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 722.4 Digital Computers and Systems - 821.3 Agricultural Methods
DOI:10.6041/j.issn.1000-1298.2013.S2.044
Database:Compendex
65. Accession number:20134616980198
Title:Design and test of combine harvester cross-flow fan with double channels and herringbone variable inclined impeller
Authors:Wang, Changning1 ; Ning, Xuegui2 ; Wang, Chaolu3
Author affiliation:1 Xinjiang Zhongshou Agricultural Animal Hush Dry Machinery Company, Urumqi 830011, China
2 China Agricultural Machinery Industry Association, Beijing 100083, China
3 Kunming Best Information Technology Co., Ltd., Kunming 650106, China
Corresponding author:Wang, C. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:17-21
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:With the aim to deal the problems of the impurity cleaning materials and cleaning fan for D2 models of grain combine harvester, the special structure performance of cross-flow fan with double channels and herringbone variable inclined impeller was discussed from a point of view on cleaning system, including design of herringbone variable inclined impeller and the special structure of volute separation and cleaning air duct. The bench test shows that features and regulation of the orifice free jet meet flow distribution requirements of the pre-cleaning and wind screen cleaning. The matching test to the J4 models showed that the statistical average index were as follows: feed rate of 4.81 kg/s, cleaning feed rate of 2.65 kg/s, cleaning loss rate of 0.17%, grain impurity rate of 0.65%. The rethreshing thrower works properly.
Number of references:8
Main heading:Air cleaners
Controlled terms:Cleaning - Fans - Harvesters - Impellers - Radial flow turbomachinery
Uncontrolled terms:Combine harvesters - Cross flows - Design and tests - Double channel - Flow distribution - Grain impurities - Special structure - Statistical average
Classification code:821.1 Agricultural Machinery and Equipment - 802.3 Chemical Operations - 651.2 Wind Tunnels - 618.3 Blowers and Fans - 618 Compressors and Pumps - 617 Turbines and Steam Turbines - 601.2 Machine Components
DOI:10.6041/j.issn.1000-1298.2013.S2.004
Database:Compendex
79. Accession number:20134616980249
Title:Fuzzy-PID self-adaptive control method in electro-hydraulic hitch system
Authors:Li, Mingsheng1 ; Zhao, Jianjun1 ; Zhu, Zhongxiang1 ; Xie, Bin1 ; Chi, Ruijuan1 ; Mao, Enrong1
Author affiliation:1 Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China
Corresponding author:Mao, E. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:295-300
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Fuzzy-PID self-adaptive control method was used in tractor's electro-hydraulic hitch system. Firstly, the fuzzy-PID self-adaptive controller was designed, and the model of the system was built. Secondly, the performance of draft control and position control was simulated and analyzed compared with PID control. At last, a field-test bed of electro-hydraulic hitch system was built. The test result showed that fuzzy-PID adaptive control had a better performance than PID control in electro-hydraulic hitch system. When the preset position stepped from 0.1 m to 0.3 m, the response time was 4 s, and overshoot was 0. When preset draft stepped from 3 kN to 7 kN, the system's response time was 5 s, and the overshoot was 25%.
Number of references:13
Main heading:Response time (computer systems)
Controlled terms:Adaptive control systems - Equipment testing - Three term control systems
Uncontrolled terms:Adaptive Control - Better performance - Electro-hydraulics - Field test - Fuzzy-PID - Self adaptive control - Self-adaptive controllers - Simulation
Classification code:722.4 Digital Computers and Systems - 731.1 Control Systems - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
DOI:10.6041/j.issn.1000-1298.2013.S2.055
Database:Compendex
83. Accession number:20134616980210
Title:Nonlinear dynamic characteristics of sugarcane cutter system with cracked shaft
Authors:Wei, Daogao1 ; Hu, Meiling1 ; Ma, Qian1 ; Ou, Yinggang2
Author affiliation:1 School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
2 Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Wei, D. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:80-85
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The cutter was simplified to a vertical over-hung rotor-bearing system. The slant crack was set near the junction of shaft and disk, only considering two nonlinear factors: the slant crack and the nonlinear cutting force. 3-DOF dynamic equations of the system were founded. Based on this model, a stiffness calculation model of opening slant crack was chosen and the dynamic characteristics of slant cracked cutter were investigated by numerical simulation. The results showed that, when the system was under the action of crack, the orbit of the shaft center and frequency components of the cutter were significantly different from that without the crack. When n was 800 r/min, as the crack depth increased, the shapes of orbit of the shaft center varied comparatively great and the corresponding displacement amplitudes tended to increase.
Number of references:14
Main heading:Cracks
Controlled terms:Cutting - Shaft displacement - Sugar cane
Uncontrolled terms:Cutter - Cutting forces - Displacement amplitudes - Dynamic characteristics - Nonlinear dynamic characteristics - Rotor-bearing system - Slant crack - Stiffness calculations
Classification code:421 Strength of Building Materials; Mechanical Properties - 602.1 Mechanical Drives - 604.1 Metal Cutting - 821.4 Agricultural Products
DOI:10.6041/j.issn.1000-1298.2013.S2.016
Database:Compendex
85. Accession number:20134616980242
Title:Quick construction of tea production line based on orientation coding and datum constraints
Authors:He, Xuejun1 ; Wang, Jin1 ; Wang, Bingwen1 ; Lu, Guodong1 ; Tang, Xiaolin2
Author affiliation:1 The State Key Lab. of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
2 Hangzhou Tea Research Institute, China CO-OP, Hangzhou 310016, China
Corresponding author:Wang, J. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:256-261
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The design of tea production line was considered in a 3-D level, and it was transformed into an assembly modeling problem. At first, a position irrelevant plane layout method was introduced which made the frequent adjustment of devices' positions unnecessary, thus the workload of designers were relieved dramatically. Then, with the orientation coding of devices and their connection relations, absolute and relative orientation of devices were determined. Finally, datum constraints were exerted to devices which realize the assemblying or positioning of devices automatically, rather than manual. According to this idea, by secondary development of SolidWorks, a program called TPLLayout was written by VB 6.0. The example showed that the system was user-friendly, and easy to operate, which improved the design efficiency dramatically, and the cost was reduced as well.
Number of references:13
Main heading:Design
Uncontrolled terms:Assembly model - Connection relation - Datum constraint - Design efficiency - Layout methods - Production line - Relative orientation - Secondary development
Classification code:408 Structural Design
DOI:10.6041/j.issn.1000-1298.2013.S2.048
Database:Compendex
87. Accession number:20134616980202
Title:Experiment of influencing factors of stubble cutting in corn stubble cutting and returning device
Authors:Gong, Tao1 ; Li, Qiyun1 ; Li, Yaping2 ; Zhang, Daolin1
Author affiliation:1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
2 School of Chemistry and Chemical Engineering, Shandong University, Ji'nan 250100, China
Corresponding author:Li, Q. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:37-40
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to study the cutting effects of corn stubble cutting and returning device, orthogonal experiment was conducted from three factors, including stubble cutting height, stubble cutting linear velocity and operating speed. Each factors performed three levels. The experimental data were analyzed in SPSS software. The results showed that the optimal operation combination was: stubble cutting height of 15 mm, stubble cutting linear velocity of 12.385 m/s and forward speed of 0.8 m/s in a given level. Single factor experiment was conducted on stubble cutting height. The drawing was plotted and the data was fitted by Origin software. The computation indicated the highest value of stubble cutting height for finishing stubble cutting work was 22 mm under fixed stubble cutting linear velocity of 12.385 m/s and forward speed of 0.8 m/s.
Number of references:13
Main heading:Experiments
Uncontrolled terms:Corn - Cutting heights - Influencing factors - Operating speed - Optimal operation - Orthogonal experiment - Single-factor experiments - Stubble cutting and returning device
Classification code:901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2013.S2.008
Database:Compendex
89. Accession number:20134616980236
Title:Forecast system for origin environment quality of agricultural product
Authors:Yong, Mei1 ; Zhang, Man1 ; Wang, Shengwei1, 2 ; Liu, Gang1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
2 College of Computer Science and Engineering, Northwest Normal University, Lanzhou 730070, China
Corresponding author:Zhang, M. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:226-230
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Forecast system for origin environment quality of agricultural product was proposed based on the database technology, ArcGIS Server, Flex and model theory. Taking VS 2008 and Flash builder 4.6 as the development environment, the proposed system could be used for the query of agricultural environmental information, the spatial analysis of pollutant information, and the forecasting of farmland environmental pollution. Based on the time series characteristics of heavy metal pollution in origin environment, exponential smoothing forecasting model was built to predict the heavy metal pollution. According to the monitoring data of heavy metals from January 2010 to April 2013, six kinds of heavy metals concentration prediction models were established. The analysis results showed that the prediction accuracy of models were around 90%, which meant that the exponential smoothing model could better fit the variation of heavy metal pollution.
Number of references:16
Main heading:Forecasting
Controlled terms:Agricultural products - Heavy metals - Query processing - Search engines
Uncontrolled terms:Environmental information - Environmental pollutions - Exponential smoothing - Exponential smoothing forecasting - Exponential smoothing model - Flex - Origin environment - Time series characteristic
Classification code:531 Metallurgy and Metallography - 723 Computer Software, Data Handling and Applications - 821.4 Agricultural Products - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2013.S2.042
Database:Compendex
90. Accession number:20134616980223
Title:Control system for fresh-keeping transportation truck with controlled atmosphere based on linux
Authors:Zhou, Xiaolong1 ; Lü, Enli1 ; Lu, Huazhong1 ; Zhang, Mingbang1 ; Cen, Kanghua1
Author affiliation:1 College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Lu, H. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:155-160
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Taking liquid nitrogen filling in fresh-keeping transportation truck with controlled atmosphere for fruits and vegetables as design platform, a kind of control system regarded ARM11 series of S3C6410 microprocessor as the core was developed. In the Linux operating system environment, the system used C language and Qt interface designing language to the temperature, relative humidity, oxygen concentration sensor and actuator signal, such as refrigeration equipment, humidifying equipment, the gas adjustment equipment, ventilation equipment and so on. In the proposed system, a kind of variable air volume ventilation system was designed and a type of fruits and vegetables' fresh-keeping parameters database was established, meanwhile, the collected data in the process of running would be stored in NAND Flash, so that user could read it in real-time and export it after the test. Test showed that the system could correctly collect the fresh-keeping parameters of fruits and vegetables in the truck, and according to the processing results, it could accurately control the corresponding actuators in time. The design and experiment provided a reference for the design of fresh-keeping transportation truck with controlled atmosphere for fruits and vegetables.
Number of references:24
Main heading:Truck transportation
Controlled terms:Actuators - ARM processors - Automobile testing - C (programming language) - Computer operating systems - Control systems - Design - Equipment - Fruits - Phase interfaces - Trucks - Vegetables - Ventilation
Uncontrolled terms:ARM - Fresh keepings - Fruits and vegetables - LINUX- operating system - Oxygen concentrations - Refrigeration equipment - Variable air volume - Ventilation equipments
Classification code:722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 723.1.1 Computer Programming Languages - 731.1 Control Systems - 801.4 Physical Chemistry - 821.4 Agricultural Products - 901 Engineering Profession - 721 Computer Circuits and Logic Elements - 408 Structural Design - 432.3 Cargo Highway Transportation - 632 Hydraulics, Pneumatics and Related Equipment, and Fluidics - 643.5 Ventilation - 662 Automobiles and Smaller Vehicles - 663 Buses, Tractors and Trucks - 663.1 Heavy Duty Motor Vehicles
DOI:10.6041/j.issn.1000-1298.2013.S2.029
Database:Compendex
93. Accession number:20134616980195
Title:Design and experiment of on-line monitoring system for feed quantity of combine harvester
Authors:Liang, Xuexiu1 ; Chen, Zhi2 ; Zhang, Xiaochao1 ; Wei, Liguo1 ; Li, Wei1 ; Che, Yu1
Author affiliation:1 State Key Laboratory of Soil-Plant-Machine System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 China National Machinery Industry Corporation, Beijing 100080, China
Corresponding author:Zhang, X. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:1-6
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:An on-line monitoring system was designed, which monitored the longitudinal-axial drum torque, speed and cereal grain flow in combine harvester. Based on theoretical analysis and experimental verification, mathematical models between the feed quantity and three factors were built up. And an indirect way to determine the feed quantity of combine harvester was found. The field experimental results showed that the proposed on-line monitoring system worked steadily and reliably, and the monitoring error was within 5%.
Number of references:15
Main heading:Monitoring
Controlled terms:Harvesters - Mathematical models - Voltage measurement
Uncontrolled terms:Cereal grains - Combine harvesters - Experimental verification - Field experiment - Longitudinal-axial drums - Monitoring system - On-line monitoring system
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942.2 Electric Variables Measurements - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921 Mathematics - 821.1 Agricultural Machinery and Equipment
DOI:10.6041/j.issn.1000-1298.2013.S2.001
Database:Compendex
94. Accession number:20134616980220
Title:Effect of anaerobic fermentation conditions on biogas yields from typical lignocellulosic materials
Authors:Yan, Shuiping1 ; Gao, Xin1 ; Ai, Ping1 ; Yuan, Qiaoxia1
Author affiliation:1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Ai, P. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:136-142
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to explore the biogas production characteristics of lignocellulosic feedstock, some typical materials including maize straw, rice straw, cotton straw, rape straw, herbal residue, bagasse and papermaking residue were chosen as substrates to analyze the effect of retting time, initial pH value and inoculation rate on their biogas productions. And the biogas production potential difference between mesophilic ((35±2)°C) and thermophilic fermentation ((53±2)°C) was compared as well. The results indicated that cotton straw and bagasse could not be started successfully to produce biogas without retting, but could obtain the highest biogas production after 7 d retting operation. And rape straw could be fermented successfully and even gain the highest biogas production without any retting. Among all the raw materials, rice straw could gain the largest biogas production under the mesophilic fermentation condition (352.56 mL/g). And its biogas yield could only be increased by 20.92% when the fermentation status was changed from mesophilic to thermophilic condition, which meant that mesophilic fermentation might be suitable for rice straw. Under the thermophilic fermentation condition, the silage maize straw could gain the highest biogas yield (480.00 mL/g), which was 82.49% higher than the mesophilic fermentation. So the thermophilic fermentation might be perfect for silage maize straw. In addition, the biogas production could also be increased gigantically for herbal and papermaking residues when the thermophilic fermentation condition was adopted.
Number of references:27
Main heading:Biogas
Controlled terms:Anaerobic digestion - Bagasse - Composting - Cotton - Fermentation - Papermaking - pH - Substrates
Uncontrolled terms:Anaerobic fermentation - Fermentation conditions - Initial pH value - Lignocellulose - Lignocellulosic feedstocks - Lignocellulosic material - Thermophilic conditions - Thermophilic fermentations
Classification code:819.1 Natural Fibers - 811.1.1 Papermaking Processes - 811 Cellulose, Paper and Wood Products - 801 Chemistry - 524 Solid Fuels - 522 Gas Fuels - 461 Bioengineering and Biology - 452.4 Industrial Wastes Treatment and Disposal - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal
DOI:10.6041/j.issn.1000-1298.2013.S2.026
Database:Compendex
99. Accession number:20134616980227
Title:Influence experiment and mechanism analysis of high-voltage pulsed electric on dielectric properties of fruits and vegetables
Authors:Ma, Feiyu1 ; Guo, Yuming1
Author affiliation:1 College of Engineering, Shanxi Agricultural University, Taigu 030801, China
Corresponding author:Guo, Y. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:177-180 185
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Taking apples as experimental materials, effect of pretreatment of high-voltage pulsed electric field on dielectric properties was studied. The effect of pulse voltage, frequency on dielectric properties was analyzed. The theory of electromagnetic field was used to analyze the influence mechanism. The results showed that equivalent capacitance and equivalent impedance of apple were both decreased when the pulse voltage and the pulse frequency increased. The parameters of high-voltage pulsed electric field had a certain effect on dielectric properties. The obtained conclusion could provide reference for further research on the effect of electrical parameters on dielectric properties for different fruits and vegetables, and also parameters optimization of high voltage pulse electric field pretreatment.
Number of references:16
Main heading:Dielectric properties
Controlled terms:Electric fields - Electromagnetic fields - Fruits - Vegetables
Uncontrolled terms:Apple - Equivalent capacitance - Experimental materials - Fruits and vegetables - High-voltage pulsed electric field - Influence rule - Mechanism analysis - Parameters optimization
Classification code:701 Electricity and Magnetism - 701.1 Electricity: Basic Concepts and Phenomena - 821.4 Agricultural Products
DOI:10.6041/j.issn.1000-1298.2013.S2.033
Database:Compendex
110. Accession number:20134616980246
Title:Parametric design of large harvesting machinery transmission gearbox based on reasoning
Authors:Chen, Yu1 ; Mao, Enrong1 ; Lü, Huangzhen1 ; Zhu, Zhongxiang1 ; Song, Zhenghe1
Author affiliation:1 Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China
Corresponding author:Song, Z. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:278-282
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to solve the problem of low efficiency of transmission design and long development cycle in the traditional design process, the parametric design method was proposed. Based on the typical harvester gearbox design knowledge, the reasoning mechanism for gearbox parametric design was studied. In the environment of VC 2008, secondary development Pro/TOOLKIT of Pro/E 5.0 was used. A platform of parametric design of large harvesting machinery transmission based on reasoning was developed. Compared with the traditional parametric design, the proposed method did not need to consider the complex relationship among parameters of parts, components and products in the parameterized software.
Number of references:11
Main heading:Product design
Controlled terms:Agricultural machinery
Uncontrolled terms:Complex relationships - Development cycle - Parametric design - Parametric design method - Reasoning - Reasoning mechanism - Secondary development - Transmission design
Classification code:821.1 Agricultural Machinery and Equipment - 913.1 Production Engineering
DOI:10.6041/j.issn.1000-1298.2013.S2.052
Database:Compendex
113. Accession number:20134616980237
Title:On-line biochemical oxygen demand measuring instrument based on biosensor
Authors:Liu, Sheng1 ; Gao, Hongwen2
Author affiliation:1 College of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, China
2 College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
Corresponding author:Liu, S. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:231-235
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to make up for the deficiency of traditional method of 5 d for dilution and seeding method (BOD5), the on-line biochemical oxygen demand(BOD) measuring instrument based on microbial sensor was designed. BOD biosensor was the combination of dissolved oxygen electrode and microbial film. Measurement of BOD using microbial membrane sensor was a fast and effective way for measuring biodegradable organic compounds in water. The principle of BOD biosensor was discussed. Whole structure of on-line BOD measuring instrument was given. The continuous sampling system and sensor signal process circuit were designed. The methods of automatic calibration, temperature control, and data process and concentration calculation of organic compounds were expounded. The relative errors of designed BOD on-line instrument with standard samples were less than 5%, and had a better correlation with the method of dilution and seeding. The designed instrument could be used for rapid determination and evaluation of biodegradable organic compounds in wastewater.
Number of references:13
Main heading:Biosensors
Controlled terms:Biochemical oxygen demand - Instrument errors - Instruments - Organic compounds - Organic pollutants - Sensors - Signal processing
Uncontrolled terms:Automatic calibration - Biochemical oxygen demands (BOD) - Concentration calculation - Measuring instruments - Microbial membranes - Microbial sensor - On-line instruments - Online monitoring
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 804.1 Organic Compounds - 801 Chemistry - 732 Control Devices - 716.1 Information Theory and Signal Processing - 453 Water Pollution
DOI:10.6041/j.issn.1000-1298.2013.S2.043
Database:Compendex
118. Accession number:20134616980197
Title:Optimization of airflow field on air-and-screen cleaning device based on CFD
Authors:Li, Hua1 ; Zhang, Meina1 ; Yin, Wenqing1 ; Li, Yu1
Author affiliation:1 College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Yin, W. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:12-16
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:To obtain the law and optimize factors of airflow field on the air-and-screen cleaning device, using the CFD software of Fluent, the numerical calculation and orthogonal experiment were implemented by changing three parameters: the obliquity of fan, the rotational velocity of fan, and the included angel of sieve. The influence law was analyzed and the airflow field was optimized by experiments results. The optimized results showed that the obliquity of fan had a great effect on the separation. The mixture of the grain and the blighted grain could be separated efficiently when the obliquity of fan was 25°, the rotational velocity of fan was 700 r/min , and the included angel of sieve was 20°.
Number of references:25
Main heading:Air
Controlled terms:Air cleaners - Computational fluid dynamics - Experiments - Optimization - Sieves
Uncontrolled terms:Air flow fields - CFD softwares - Cleaning devices - Numerical calculation - Orthogonal experiment - Rotational velocity - Three parameters
Classification code:605 Small Tools and Hardware - 651.2 Wind Tunnels - 804 Chemical Products Generally - 901.3 Engineering Research - 921.5 Optimization Techniques - 921.6 Numerical Methods
DOI:10.6041/j.issn.1000-1298.2013.S2.003
Database:Compendex
120. Accession number:20134616980207
Title:Vertical lift type single profiling cotton topping machine
Authors:He, Lei1 ; Liu, Xiangxin1 ; Zhou, Yali1 ; Zhao, Yan1 ; Hu, Bin2
Author affiliation:1 Mechanical Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China
2 College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Corresponding author:Liu, X. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:62-67
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:For agronomic requirements for cotton topping and unsatisfactory profiling effect of the existing machine, a kind of vertical lift type single profiling cotton topping machine was designed. Its structure and working principle were proposed. Central composite test was used on the factors which had effect on profiling effect and quality of topping of the proposed machine. The quadratic regression model of correlation coefficient and walking speed, profile plate and cutting distance, and pump flows were built respectively. The optimal structural and operated parameters were obtained by analyzing the response surface of model. The results showed that, when the travel speed was 0.86 m/s, distance profile plate with cutter was 0.543 m, and the pump flow 4.69 L/min, the best profiling effect and topping quality could be achieved with a correlation coefficient of 0.961. The field test showed that the optimized program was feasible, which provided theoretical basis for design of vertical lift type single profiling cotton topping machine.
Number of references:24
Main heading:Cotton
Controlled terms:Experiments - Optimization - Plates (structural components) - Regression analysis - Software testing - Structural optimization
Uncontrolled terms:Central composite - Correlation coefficient - Distance profiles - Quadratic regression - Response surface - Single profiling - Vertical lift - Walking speed
Classification code:408.2 Structural Members and Shapes - 723.5 Computer Applications - 819.1 Natural Fibers - 901.3 Engineering Research - 921.5 Optimization Techniques - 922.2 Mathematical Statistics
DOI:10.6041/j.issn.1000-1298.2013.S2.013
Database:Compendex
122. Accession number:20134616980199
Title:Design and experiment of two-row corn harvester header
Authors:Du, Yuefeng1 ; Mao, Enrong1 ; Zhu, Zhongxiang1 ; Wang, Xingjun2 ; Yue, Xiaowei1 ; Li, Xiaoyu1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Shandong Changlin Group Agricultural Equipment Co., Ltd., Linyi 276715, China
Corresponding author:Zhu, Z. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:22-26
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to reduce the consumption power and improve the working performance when corn snapping unit is working, the overall structure of corn snapping unit was designed, then the key structure and kinematic parameters were analyzed in theory. After that, the 3-D model of corn snapping unit was established by using Pro/E according to the design parameters. Finally, the power and noise level were tested at the different rotate speeds in testing bed. The results showed that the consumption power and noise level were too high when this corn snapping roll was working without load. After changing the finger rotor, the consumption power rose at low speed and dropped at high speed in contrast to before changing.
Number of references:14
Main heading:Structural design
Controlled terms:Design - Experiments - Harvesters
Uncontrolled terms:Corn harvesters - Design parameters - Header - Key structures - Kinematic parameters - Noise levels - Rotate speed - Working performance
Classification code:408 Structural Design - 408.1 Structural Design, General - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2013.S2.005
Database:Compendex
123. Accession number:20134616980209
Title:Motion characteristics analysis and parameter optimization for tomato harvester feed mechanism
Authors:Zhou, Junping1 ; Hao, Zhaohui1 ; Yang, Xuejun1 ; Jin, Xin2 ; Sun, Xing1 ; Wang, Jinjiang1
Author affiliation:1 Modern Agricultural Equipment Co., Ltd., Beijing 100083, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Yang, X. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:75-79 85
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:To reduce the inefficient of tomato harvester pickup mechanism and avoid the fruit injury and blockage, the movement trajectory of tomato harvester pickup mechanism was optimized. Firstly, the motion mathematical model of mechanism was established and parameterized in ADAMS. And then, the effect of main parameters on motion trajectory was analyzed. The jitter of pickup mechanism and tomato feeding stability in the process of harvesting were taken as optimization goal. The parameter optimization analysis was performed. Finally, a set of optimal parameter combination was obtained. In this combination, the mechanism had good movement characteristics, which could meet the agronomic requirements of tomato harvest.
Number of references:10
Main heading:Fruits
Controlled terms:Harvesters - Mathematical models - Optimization - Pickups
Uncontrolled terms:Header - Motion characteristics - Motion trajectories - Movement characteristics - Movement trajectories - Optimal parameter combinations - Parameter optimization - Tomato harvester
Classification code:752.3.1 Sound Reproduction Equipment - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2013.S2.015
Database:Compendex
124. Accession number:20134616980235
Title:Automatic detection platform for soil nitrate-nitrogen
Authors:Zhang, Li'nan1 ; Zhang, Miao1 ; Pu, Pan1 ; Zhang, Jitian1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
Corresponding author:Zhang, M. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:220-225
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to detect soil nitrate-nitrogrn content rapidly with low cost, an automatic multi-channel detection platform for soil nitrate-nitrogrn was developed. The self-designed PPy(NO3-) ion selective electrode (ISE) was used to sense the nitrate ion in solutions. The platform response time, effects of rinsing time on platform calibration and soil nitrate-nitrogen detection were discussed with a series of standard nitrate solutions, nitrate-nitrogen contents of which were ranging from 1-250 mg/L. Testing results showed that response time of the platform was 40 s when it was used in soil nitrate-nitrogrn detection. During system calibration and soil nitrate extracts determination, rinsing operation for the system could be carried out directly with the next sample solution. And rinsing 2 times could achieve a desirable effectiveness. No significant differences were got between the results detected separately by the platform and manual operation. Also, different channels of the platform possessed similar detection performances and good consistency. The system validation results conducted with 20 soils indicated that satisfied correlation was obtained between the soil nitrate-nitrogen results detected with the platform and ultraviolet spectrophotometric method. The determination coefficient (R2) was 0.91.
Number of references:12
Main heading:Nitrates
Controlled terms:Ion selective electrodes - Nitrogen - Response time (computer systems) - Soil testing - Soils
Uncontrolled terms:Automatic Detection - Detection performance - Determination coefficients - Multichannel detection - Nitrate nitrogen - Spectro-photometric method - System calibration - System validation
Classification code:483.1 Soils and Soil Mechanics - 722.4 Digital Computers and Systems - 802.1 Chemical Plants and Equipment - 804 Chemical Products Generally - 804.2 Inorganic Compounds
DOI:10.6041/j.issn.1000-1298.2013.S2.041
Database:Compendex
125. Accession number:20134616980247
Title:Optimized design of steering axle housing for wheeled combine harvester
Authors:Ma, Li'na1 ; Mao, Enrong1 ; Zhu, Zhongxiang1 ; Song, Zhenghe1
Author affiliation:1 Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China
Corresponding author:Song, Z. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:283-287 272
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Three typical work conditions were chosen to analyze the forces of steering axle housing of wheeled combine harvester. The effect of different section forms of wheeled combine harvester on strength and rigidity of steering axle housing were studied. Then, the optimized design method of steering axle housing was put forward. The strength and rigidity of steering axle housing for a certain type wheeled combine harvester were analyzed in ANSYS. Meanwhile, its section forms and dimensions were optimized. The improved steer axle housing not only satisfied the demand of strength and rigidity, but also reduced its weight by 17.8%, and enhanced its manufacturability at the same time. The reasons for stress concentration were studied and the optimization processes were proposed.
Number of references:10
Main heading:Architectural design
Controlled terms:Axles - Harvesters - Housing - Optimization - Rigidity - Stress concentration
Uncontrolled terms:Combine harvesters - Manufacturability - Optimized designs - Steering axles - Work condition
Classification code:921.5 Optimization Techniques - 821.1 Agricultural Machinery and Equipment - 682.1.1 Railroad Cars - 951 Materials Science - 422 Strength of Building Materials; Test Equipment and Methods - 403.1 Urban Planning and Development - 402 Buildings and Towers - 421 Strength of Building Materials; Mechanical Properties
DOI:10.6041/j.issn.1000-1298.2013.S2.053
Database:Compendex
126. Accession number:20134616980230
Title:Photosynthetic rate prediction of tomato plants based on wireless sensor network in greenhouse
Authors:Wang, Weizhen1 ; Zhang, Man1 ; Jiang, Yiqiong1 ; Sha, Sha1 ; Li, Minzan1
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
Corresponding author:Zhang, M. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:192-197
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to improve the utilization of CO2 fertilizer, the photosynthetic rate of tomato plants in the flowering stage was studied. A wireless sensor network system was used to real time monitor greenhouse environmental parameters. A LI-6400XT portable photosynthesis analyzer was used to measure the photosynthetic rate of tomato plants, and the environmental parameters of leaves were controlled according to the presetting rule. The photosynthetic rate prediction models of single leaves were established based on the back-propagation (BP) neural network. The environmental parameters were used as input neurons after processed by principal component analysis (PCA), and the photosynthetic rate was taken as the output neuron. The performance of the prediction model was evaluated. The prediction results of the models showed that the correlation coefficient between the simulated and observed data sets was 0.99, RMSE was 0.288. Furthermore, when different CO2 concentrations were selected as the input to predict the photosynthetic rate, the simulated and observed data showed the same trend. According to the above analysis, it was concluded that the model could be used as the basis of the quantitative regulation of CO2 fertilization to tomato plants in greenhouse.
Number of references:16
Main heading:Plants (botany)
Controlled terms:Carbon dioxide - Computer simulation - Forecasting - Fruits - Greenhouses - Mathematical models - Neural networks - Principal component analysis - Wireless sensor networks
Uncontrolled terms:Back-propagation neural networks - BP neural networks - Correlation coefficient - Environmental parameter - Photosynthetic rate - Prediction model - Real time monitors - Tomato
Classification code:921 Mathematics - 821.6 Farm Buildings and Other Structures - 821.4 Agricultural Products - 804.2 Inorganic Compounds - 922.2 Mathematical Statistics - 732 Control Devices - 723.4 Artificial Intelligence - 461.9 Biology - 461.1 Biomedical Engineering - 723.5 Computer Applications
DOI:10.6041/j.issn.1000-1298.2013.S2.036
Database:Compendex
127. Accession number:20134616980204
Title:Effect of different threshing elements on threshing and separating performance for rape combine harvester
Authors:Huang, Peng1 ; Liao, Qingxi1 ; Zong, Wangyuan1 ; Li, Haitong1 ; Li, Ping1
Author affiliation:1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Liao, Q. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:47-51
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The longitudinal axial threshing and separating unit and the tangential-longitudinal axial combine harvester were used to conduct comparative experiment on spike tooth, combination of spike tooth and short rasp bar, short rasp bar and long rasp bar. The experimental results showed that the loss ratio before threshing and the threshing rate of short rasp bar were 4.58% and 95.38%, respectively. Comprehensive threshing and separating performance were better than other threshing units and could relieve cleaning load effectively.
Number of references:17
Main heading:Agriculture
Controlled terms:Combines - Harvesters - Separation
Uncontrolled terms:Combine harvesters - Comparative experiments - Loss ratio - Rape - Rape combine - Threshing and separating - Threshing and separating unit - Threshing units
Classification code:802.3 Chemical Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment
DOI:10.6041/j.issn.1000-1298.2013.S2.010
Database:Compendex
132. Accession number:20134616980215
Title:Parameters design and experiment on self-propelled Salix psammophila stumping machine
Authors:Liu, Zhigang1, 2 ; Wang, Decheng1 ; Zhai, Gaixia2 ; Liu, Guilin2 ; Hao, Xingyu2 ; Zhang, Ning2
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
Corresponding author:Wang, D. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:107-110 61
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The structure and working principle of the self-propelled Salix psammophila stumping machine were described. And aiming at the saw blade rotation speed and walking speed matching problem of the machine, the design and experiment on the working parameters were carried out, such as cutting saw blade linear velocity and machine walking speed, and the structure of the drive chassis. Results of the trial were summarized as follows. The proper linear cutting velocity for Salix psammophila stumping was 50 m/s. And the machine walking speed was determined by the brush size and plants density. The effective uphill angle of the machine walking on sand was less than 10°.
Number of references:11
Main heading:Experiments
Controlled terms:Brushes - Design - Sawing
Uncontrolled terms:Cutting velocity - Linear velocity - Matching problems - Parameters design - Rotation speed - Salix psammophila - Walking speed - Working parameters
Classification code:408 Structural Design - 604.1 Metal Cutting - 605 Small Tools and Hardware - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2013.S2.021
Database:Compendex
135. Accession number:20134616980232
Title:Development of yield monitoring system in solar greenhouse
Authors:Li, Li1 ; Wang, Haihua1 ; Yuan, Hongbo1, 2 ; Wang, Xiaohong1, 3
Author affiliation:1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
2 College of Mechanical and Electronic Engineering, Agricultural University of Hebei, Baoding 071000, China
3 Key Laboratory of Agriculture Information Acquirement Technology, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
Corresponding author:Li, L. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:205-208
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to measure and monitor the yield of solar greenhouse crops, a solar greenhouse yield monitoring system was developed. The system was consisted of three parts: a pressure sensor terminal, wireless data transmission network and software of monitoring yield. The wireless data transmission network was built and the communication among wireless network, pressure sensor output terminals and PC monitoring software was realized. The yield-related information was got and the data was stored in the database to facilitate statistical analysis. The results of the analysis could help to adjust the greenhouse environment, crop growth environment and the greenhouse management. Meanwhile, the RFID tags were added on the measured vegetables to achieve traceability of the vegetable origin and other information. Experimental results showed that the system design was reasonable, reliable, easy to operate and convenient to use. The system could improve the efficiency of the greenhouse yield measurement, and it was able to effectively enhance the degree of automation in greenhouse yield. Meanwhile, this system facilitated the adjustment of greenhouse management.
Number of references:10
Main heading:Greenhouses
Controlled terms:Crops - Data communication systems - Design - Monitoring - Pressure sensors - Radio frequency identification (RFID) - Solar heating - Vegetables
Uncontrolled terms:Degree of automation - Greenhouse environment - Greenhouse management - Solar greenhouse - Wireless data transmission - Yield - Yield measurement - Yield monitoring
Classification code:944.3 Pressure Measuring Instruments - 821.4 Agricultural Products - 821.6 Farm Buildings and Other Structures - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 723 Computer Software, Data Handling and Applications - 717 Optical Communication - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 643.1 Space Heating - 408 Structural Design - 718 Telephone Systems and Related Technologies; Line Communications
DOI:10.6041/j.issn.1000-1298.2013.S2.038
Database:Compendex
138. Accession number:20134616980228
Title:Effect of high pulsed electrical filed on properties of compressive mechanical and deformation process of potato
Authors:Wu, Xinhui1 ; Guo, Yuming1
Author affiliation:1 College of Engineering, Shanxi Agricultural University, Taigu 030801, China
Corresponding author:Guo, Y. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:181-185
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Potato was chosen as the subject of the compression experiment, and the microstructure deformation, microscopic mechanical properties, deformation and failure process were gained by the system of microscopic image and mechanical test. The fitting equation and the optimal parameters of yield strength and PEF parameter were analyzed and further optimized by SAS software. The result could provide a theoretical basis for optimizing the technologic parameter of freeze-drying and the design of processing equipment.
Number of references:11
Main heading:Electric properties
Controlled terms:Deformation - Mechanical properties - Optimization
Uncontrolled terms:Deformation process - Electrical field - Microscopic image analysis - Potato - Properties of compressive mechanical
Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 701.1 Electricity: Basic Concepts and Phenomena - 921.5 Optimization Techniques - 951 Materials Science
DOI:10.6041/j.issn.1000-1298.2013.S2.034
Database:Compendex
141. Accession number:20134616980225
Title:Effect of UV-C treatment on fatty acid oxidation and antimicrobial activities of rice
Authors:Liu, Xia1 ; Xu, Li'nan1 ; Chen, Yuanyuan1 ; Zhang, Yibin1 ; Wang, Wei1 ; Li, Xihong1
Author affiliation:1 College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
Corresponding author:Li, X. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:167-171
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Effect of UV-C treatment on rice ageing, especially fatty acid oxidation and antimicrobial activities during storage was investigated. The rice was irradiated at ultraviolet of 4 W/m2 exposure intensity for 0, 10, 30 and 60 min, and then exposed or unexposed. The control rice was 0 min exposure. The changes of activities lipoxygenase-3 (LOX-3), which was the key enzyme of resulting in the rice aging, and malondialdehyde (MDA)of fatty acid oxidation metabolism products, the amount of microorganisms, respiration rate and the permeability of membrane, were researched for illuminating effect of UV-C treatment on rice ageing and obtaining optimal processing parameter. The results showed that UV-C could inhibit LOX-3 activity, and reduce the content of MDA. Among the samples, content of MDA of 30 min irradiating time and unexposed to air was shaved up the most to 62.78%, but the content of MDA of 60 min irradiating time and unexposed to air was slightly increased. In addition, exposed to air immediately could delay effect of UV-C treatment. The content of MDA of exposed to air immediately was steadily reducing and the rate of change was lesser. Similar change rule was found out including the change of the total number of microorganisms, breathing intensity, cell membrane permeability. The result indicated that treatment of 4 W/m2 exposure intensity for 30 min and unexposed to air could effectively inhibit fatty acid oxidation and antimicrobial activities of rice, delay rice aging and improve rice quality and effect of preservation.
Number of references:21
Main heading:Microorganisms
Controlled terms:Cell membranes - Cytology - Energy storage - Fatty acids - Oxidation
Uncontrolled terms:Anti-microbial activity - Cell membrane permeability - Exposure intensity - Fatty acid oxidation - Metabolism products - Microbial pollution - Rice - UV-C
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology - 702 Electric Batteries and Fuel Cells - 802.2 Chemical Reactions - 804.1 Organic Compounds
DOI:10.6041/j.issn.1000-1298.2013.S2.031
Database:Compendex
142. Accession number:20134616980211
Title:System evaluation on harvesting process and key equipments for green grass
Authors:Yang, Shikun1 ; Du, Jianqiang1 ; Liu, Guilin1 ; Wu, Yamei1
Author affiliation:1 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
Corresponding author:Liu, G. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:86-90 95
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to solve the problem of large loss in herbage dry and low retention of nutrition for dry harvesting technology process, theory analysis and equipment design was carried out. Wet harvesting technology process was proposed. The technology theory, process route and key equipment were described. Comparisons of dry harvesting technology process and wet harvesting technology process were performed. The results showed the advancement of wet harvesting technology process.
Number of references:17
Main heading:Harvesting
Controlled terms:Equipment - Technology
Uncontrolled terms:Contrast tests - Equipment design - Forage grass - Key equipment - Process route - System evaluation
Classification code:821.3 Agricultural Methods - 901 Engineering Profession
DOI:10.6041/j.issn.1000-1298.2013.S2.017
Database:Compendex
143. Accession number:20134616980224
Title:Kinematic analysis of bag-picking mechanism in automatic bag-delivering packaging machine
Authors:Yang, Chuanmin1 ; Liu, Mingyu2 ; Wang, Hao2 ; Tian, Shaolong2
Author affiliation:1 School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
2 School of Mechanical Engineering, Hebei University of Technology, Tianjin 300131, China
Corresponding author:Yang, C. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:161-166
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to make bag pick and send accurately, reposefully and fleetly in automatic bag-delivering packaging machine, based on the mathematical model of mechanism for bag-picking, the kinematics characteristics of end actuator were analyzed. The calculation formulas of displacement, velocity and acceleration of end actuator for bag-picking were deduced. Based on the above calculation, the motions and defects of mechanism for bag-picking were summarized and improved. The kinematics curves of bag-picking mechanism were obtained with Matlab and the original results were compared with the improved one. The contrasting result showed that the curves of displacement, velocity and acceleration of modified mechanism for bag-picking were improved. The better kinematic characteristics were gotten and the expected goals were achieved.
Number of references:15
Main heading:Kinematics
Controlled terms:Actuators - Mathematical models - Packaging machines
Uncontrolled terms:Calculation formula - Kinematic Analysis - Kinematic characteristics - Kinematics analysis - Kinematics characteristics - Kinematics curves - Modified mechanism
Classification code:632 Hydraulics, Pneumatics and Related Equipment, and Fluidics - 694.3 Packaging Equipment - 921 Mathematics - 931.1 Mechanics
DOI:10.6041/j.issn.1000-1298.2013.S2.030
Database:Compendex
148. Accession number:20134616980222
Title:Optimization of environmental factors for biomass production of isolated strain of Desmodesmus sp. EJ12-3
Authors:Ji, Fang1 ; Hao, Rui2 ; Liu, Ying1, 2 ; Li, Daoyi3 ; Zhou, Yuguang1, 2 ; Dong, Renjie1, 2
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture, Beijing 100083, China
3 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author:Zhou, Y. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:149-154
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:With the aim of isolating a high biomass accumulation strain and optimize environmental factors to enhance its biomass production, an unicellular green algae was isolated from fresh water samples, the morphological and genomic characterization identification of this strain was carried out by using 18s rRNA and ITS1 analysis. This newly isolated strain named EJ12-3 was identified as Desmodesmus sp. The environmental factors for biomass production of Desmodesmus sp. EJ12-3 was optimized by using response surface methodology (RSM). The experimental and the predicted values were very close which reflected the accuracy and the applicability of RSM (R2=0.950). According to the results, the optimal condition for biomass production within the experimental range of the variables studied was: temperature of 28°C, light intensity of 131 μmol/(m2·s), light/dark cycle of 15:9 and pH value of 6.0. Under this condition, the predicted biomass production value was up to (0.648±0.015) g/L.
Number of references:21
Main heading:Biomass
Controlled terms:Algae - Optimization - RNA - Surface properties
Uncontrolled terms:Biomass accumulation - Culture conditions - Desmodesmus sp - Isolation - Response surface methodology
Classification code:461.2 Biological Materials and Tissue Engineering - 525.1 Energy Resources and Renewable Energy Issues - 921.5 Optimization Techniques - 951 Materials Science
DOI:10.6041/j.issn.1000-1298.2013.S2.028
Database:Compendex
149. Accession number:20134616980217
Title:Dynamic model of dairy manure anaerobic digestion
Authors:Li, Daoyi1 ; Li, Shujun1 ; Jing, Quanrong1 ; Wu, Lili1 ; Yan, Xiaohui1 ; Jin, Xin2
Author affiliation:1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Li, S. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:117-123
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A mathematical model for dynamic simulation of anaerobic digestion of dairy manure was conducted. The model included an enzymatic hydrolytic step and four bacterial steps, also focused volatile fatty acid, pH value, free ammonia inhibition, plus gas-liquid equilibrium and ions equilibrium. The model was applied for the simulation of batch and continuous dry thermophilic digestion of dairy manure, and the result compared favorably with experimental data.
Number of references:17
Main heading:Manures
Controlled terms:Anaerobic digestion - Biogas - Computer simulation - Dynamic models - Volatile fatty acids
Uncontrolled terms:Dairy manures - Free ammonia inhibition - Gas-liquid equilibriums - pH value - Thermophilic digestion
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 522 Gas Fuels - 723.5 Computer Applications - 804.1 Organic Compounds - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2013.S2.023
Database:Compendex
150. Accession number:20134616980216
Title:Driving performance of single-track rubber roller driving device
Authors:Zhang, Kaixin1 ; Zhang, Yanlin1 ; Zhou, Bo1 ; Yuan, Qiaoxia1 ; Lu, Gen1 ; Zhao, Liang1
Author affiliation:1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Zhang, Y. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:111-116
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The driving performance of single-track rubber roller driving device was studied. The test was carried on a test-bed with floating vertical pressure clamping and 2-DOF of opposite torque. The curves of compression, friction and positive pressure were figured out. In order to further analyze the deformation micro status of rubber roller, Mooney-Rivlin model in nonlinear finite element and augmented Lagrangian contact algorithm were utilized in numerical analysis. The relationship among positive pressure, adhesion area and compression was analyzed. The contact stress distribution, friction stress distribution and contact state distribution were also obtained. The simulation results of relationship between positive pressure and compression were found to be accordance with the experimental results, which verified the correctness of driving performance relationship between positive pressure and friction. The results showed that, when the positive press was 2750 N, the maximum single static friction was 1167 N, the macroscopic friction coefficient was 0.85, the adhesion area was 1909 mm2, and the compression was 4.6 mm, which met the static technology demand for orchard transportation.
Number of references:19
Main heading:Rubber
Controlled terms:Adhesion - Automobile drivers - Finite element method - Rollers (machine components) - Stiction - Stress concentration - Tribology
Uncontrolled terms:Augmented Lagrangians - Contact stress distributions - Driving device - Driving performance - Macroscopic friction - Non-linear finite elements - Rubber rollers - Single-track
Classification code:931.1 Mechanics - 931 Classical Physics; Quantum Theory; Relativity - 921.6 Numerical Methods - 818.1 Natural Rubber - 951 Materials Science - 801 Chemistry - 432 Highway Transportation - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 601.2 Machine Components
DOI:10.6041/j.issn.1000-1298.2013.S2.022
Database:Compendex
155. Accession number:20134616980245
Title:Calculation of parameters of steering wheel alignment for large wheeled harvesters
Authors:Li, Hao1 ; Xie, Bin1 ; Lü, Huangzhen1 ; Mao, Enrong1 ; Zhu, Zhongxiang1 ; Song, Zhenghe1
Author affiliation:1 Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China
Corresponding author:Song, Z. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:273-277
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A specific mathematical model to obtain the parameters of steering wheel alignment for large wheeled harvesters was proposed in light of multi-body dynamics technique. A comparison between the proposed model and the traditional ones was made in terms of the optimization design of steering geometry and the performance of steady-state cornering response. Results showed that both models could reach a similar computing value in the small range of steering angles. However, for large steering angles, the proposed one was more appropriate to express the steering characteristics. Through theoretical analysis and experiment validation, it was limited to adapt traditional simplified bicycle model to depict handling stability of large wheeled harvesters. Therefore, the proposed model demonstrated its unique accuracy in the calculation of parameters of steering wheel alignment for large wheeled harvesters.
Number of references:10
Main heading:Harvesters
Controlled terms:Calculations - Mathematical models - Wheels
Uncontrolled terms:Experiment validations - Handling stabilities - Multi-body dynamic - Optimization design - Steady-state cornering response - Steering angles - Steering characteristics - Steering wheel
Classification code:601.2 Machine Components - 821.1 Agricultural Machinery and Equipment - 921 Mathematics
DOI:10.6041/j.issn.1000-1298.2013.S2.051
Database:Compendex
156. Accession number:20134616980200
Title:Performance experiment of corn harvester header
Authors:Geng, Aijun1, 2 ; Li, Ruxin1 ; Liu, Shuangxi1 ; Zhang, Ji1 ; Zhao, Kewei3
Author affiliation:1 Mechanical and Electronic Engineering College, Shandong Agricultural University, Taian 271018, China
2 Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271018, China
3 Luoyang Zhongshou Machinery and Equipment Co., Ltd., Luoyang 471003, China
Corresponding author:Li, R. ([email protected])
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:44
Issue:SUPPL.2
Issue date:October 15, 2013
Publication year:2013
Pages:27-31
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The structure and motion parameters of corn header have clear influence on working performance of corn harvesting machine. The relationship between picking corn-cob power and idling power of ejector roller and the influences of ejector roller speed, auger speed and picking board gap distance on broken rate of corn stalk were studied by field test. The results showed that idling power of ejector roller was larger than its picking corn-cob power. The field test also showed that with the increase of ejector roller speed, the lose rate and damage rate of corn ear decreased. When the ejector roller worked in a high speed, the lose rate and damage rate were lower at a larger picking board gap distance. With the increase of ejector roller speed, both broken rate of corn ear and corn stalk decreased. The broken rate of corn ear was lower and broken rate of corn stalk was higher at a larger picking board gap distance.
Number of references:10
Main heading:Rollers (machine components)
Controlled terms:Ejectors (pumps) - Experiments - Harvesters - Speed
Uncontrolled terms:Corn harvesters - Field test - Harvesting machines - Header - Performance experiment - Performance tests - Structure and motions - Working performance
Classification code:601.2 Machine Components - 618.2 Pumps - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 931.1 Mechanics
DOI:10.6041/j.issn.1000-1298.2013.S2.006
Database:Compendex
作者登錄
審稿登錄
編輯登錄
讀者登錄
快速檢索
友情鏈接
