ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

喬木莖體水分傳感器探針結(jié)構(gòu)實驗
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:


Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    基于駐波率測量原理的喬木莖體水分傳感器，其測量裝置由信號源,、同軸傳輸線及雙針平行不銹鋼探針組成,。喬木莖體的介電特性決定了同軸傳輸線兩端電壓差值(即傳感器的輸出電壓)的大小,，通過測量傳感器的輸出電壓,，可達(dá)到測量喬木莖體體積含水率的目的,。通過兩個實驗來確定傳感器的探針結(jié)構(gòu)：模擬實驗中研究了在不同有機(jī)試劑中探針長度對傳感器輸 出電壓的影響,，實驗中選取了不同的有機(jī)試劑來模擬不同體積含水率的喬木莖體,。根據(jù)模擬實驗數(shù)據(jù),，得出了傳感器輸出電壓與探針長度的單調(diào)變化關(guān)系,，選取了傳感器的探針結(jié)構(gòu)參數(shù)；對側(cè)柏喬木莖體樣本進(jìn)行了干燥實驗,，得出傳感器的輸出電壓與樣本的體積含水率之間有較好的線性關(guān)系,。

    Abstract:

    A probe based on standing wave ratio (SWR) to measure stem water content was presented. Two experiments were taken to study the configuration of probe: (1) Simulation experiment. Different organic solutions were chosen as the testing media to simulate the stem which contains water. The result shows that the output voltage changed lineally with the length change of the probe. (2) Calibration experiment. The sample of arborvitae was selected and the oven temperature was kept at 60℃ constantly. The result shows that the relationship between water content of stem and the output voltage was linear. It can be concluded that the probe we studied could be used to measure stem water content. 

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王海蘭,白陳祥,趙燕東.喬木莖體水分傳感器探針結(jié)構(gòu)實驗[J].農(nóng)業(yè)機(jī)械學(xué)報,2009,40(1):176-179.[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(1):176-179.

復(fù)制
分享
文章指標(biāo)
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期:
文章二維碼