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基于信道測試的橘園WSN網(wǎng)絡(luò)部署試驗(yàn)
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現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系建設(shè)專項(xiàng)資金資助項(xiàng)目(CARS—27);省部產(chǎn)學(xué)研結(jié)合項(xiàng)目（2011B090400359);國家星火計(jì)劃資助項(xiàng)目（2012GA780043）


WSN Layout Experiment Based on Radio Frequency Propagation Tests in Citrus Orchard
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    摘要:

    為解決無線傳感器網(wǎng)絡(luò)（WSN）規(guī)劃與快速部署問題，基于無線信道傳播特性,，研究橘園WSN射頻信號衰減模型,，指導(dǎo)WSN部署并進(jìn)行了組網(wǎng)試驗(yàn),。選433MHz與2.4GHz載波頻率,，基于連續(xù)無線電波在通信碼率,、天線增益,、調(diào)制擴(kuò)頻方式,、數(shù)據(jù)包長度和通信距離等多因素作用下分析WSN射頻信號在橘園的衰減,，建立2頻率射頻信號接收強(qiáng)度與環(huán)境傳播因子及通信距離間的模型,，擬合R2最小值與最大值分別為0.957031與0.971218，0.9546與0.9863,。通信碼率低于1.2kb/s且遠(yuǎn)距離通信時,，433MHz CC1110具有優(yōu)勢；發(fā)射功率與天線增益相同時,，433MHz平均信號強(qiáng)度高于2.4GHz,；通信碼率相同時，CC2530丟包率低于CC1110,。針對橘園選ZigBee設(shè)計(jì)星型WSN進(jìn)行組網(wǎng)試驗(yàn),，結(jié)果表明，盡可能短數(shù)據(jù)包與較低通信碼率的通信協(xié)議較好,；WSN各節(jié)點(diǎn)平均通信成功率高于84%,。

    Abstract:

    The layout of wireless sensor network (WSN) in citrus orchards was analyzed concerning radio frequency (RF) signal strength attenuation and packet loss rate of WSN based on radio wave propagation characteristics. Accordingly, a simply equipped WSN network was deployed and tested. The attenuation of radio wave was studied in the tests with the carrier frequencies of 433MHz and 2.4GHz in the circumstance of different combinations of impact factors including data rate, packet length, transmission distances, etc. The two RF signal strength linear models (433MHz and 2.4GHz) were built in citrus orchards with the related determination coefficients for fitting-curves ranging from 0.957031 to 0.971218 and 0.9546 to 0.9863. Signal attenuation tests showed that the CC1110 (433MHz) had a better performance in long distance communication with data rate lower than 1.2kb/s and the average received signal strength was higher than the 2.4GHz’s with the same output power. While the CC2530 (2.4GHz) provided lower packet loss rate compared with the CC1110 (433MHz) in transmitting in the same data rate. For WSN configuration, short data packet and low data rate were recommended according to the test results. A ZigBee star network was constructed and experimented with the guidance provided by signal attenuation tests. Statistics showed that the average success rate for communication was higher than 84%.

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岳學(xué)軍,王葉夫,洪添勝,徐興,劉永鑫,張宗杰.基于信道測試的橘園WSN網(wǎng)絡(luò)部署試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報,2013,44(5):213-218. Yue Xuejun, Wang Yefu, Hong Tiansheng, Xu Xing, Liu Yongxin, Zhang Zongjie. WSN Layout Experiment Based on Radio Frequency Propagation Tests in Citrus Orchard[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(5):213-218.

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  • 在線發(fā)布日期: 2013-04-28
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