农机化研究2016，Vol.38Issue(6)：69-73,5.
管式土壤水分传感器探头的研制
Development of Probe of Tube Access Soil Moisture Sensor
摘要
Abstract
A tube access soil moisture sensor based on marginal effect of electric field was developed .Maxwell finite ele-ment analysis software analyzes the electric field distribution and capacitance , and how axial length of probe electrode or axial spacing length of two rings influence sensitivity and effective range , find the optimal combination of sensor probe structure .The results showed that the value of comparative measure this moisture sensor measurements with conventional drying method, the coefficient of determination R2=0.997 6 , the maximum absolute error of 1.60%.Improved the measurement accuracy of the sensor can be used in agricultural production practices .关键词
土壤水分/土壤剖面/传感器/边缘效应Key words
soil moisture/soil profile/sensor/marginal effect of electric field分类
农业科技引用本文复制引用
吕东,王新忠,刘飞,沙刘云..管式土壤水分传感器探头的研制[J].农机化研究,2016,38(6):69-73,5.基金项目
"十二五"国家科技支撑计划项目(2014BAD08B03) （2014BAD08B03）
昆山市农业科技计划项目(KN1408) （KN1408）
