面向车载式测量的土壤含水量与电导率复合传感器设计

On-the-go Measurement Oriented Combined Sensor Design for Soil Moisture Content and Electrical Conductivity

基于介电方法设计了符合车载测量要求的四环电极结构土壤含水量与电导率复合传感器。分别在NaCl电导率溶液、含水土样和混合土样中进行标定试验分析,结果证实了复合传感器的可行性。通过分析混合土样中含水量和电导率与传感器输出信号之间的相关性,分别建立土壤含水量与电导率的统计预测模型。

A combined sensor for soil moisture content（MC） and electrical conductivity（EC） with 4-ring electrode was developed,based on the dielectric theory.The calibration tests with NaCl solution,moist soil sampler and mixed soil sampler were conducted.The results demonstrated that the combined sensor could response the variation of soil MC and EC.By means of analyzing the outputs of 4-ring sensor in mixed soil sampler,statistical prediction models for soil MC and EC were established,respectively.