WANG Xin-zhong1, LIU Fei1, YOU Ting2. Research of soil profile moisture sensor based on principle of high-frequency capacitance[J]. 2012, 31(10): 12-15.
WANG Xin-zhong1, LIU Fei1, YOU Ting2. Research of soil profile moisture sensor based on principle of high-frequency capacitance[J]. 2012, 31(10): 12-15. DOI: 10.13873/j.1000-97872012.10.032.
基于高频电容原理的土壤剖面水分传感器研究
摘要
为了实现土壤剖面不同深度的水分测量
基于高频电容原理
研制了一种能够自动、连续监测土壤剖面动态含水量的水分传感器。通过实验
建立了传感器数学标定模型
并对传感器进行了相关性能测试。通过对比分析土壤水分实际值与传感器测量值
结果表明:传感器最大绝对误差为-5.10%。传感器测量水分梯度变化明显
可用于土壤剖面不同深度水分的测量
具有低成本、低功耗的特点
可应用于农林业实际生产。
Abstract
In order to achieve the soil moisture measurement of different depths of soil profile
a soil profile moisture sensor is designed based on the principle of high-frequency capacitance
which can automatically and continuously monitor the dynamic water content.The sensor mathematical calibration model is established by test
and sensor-related performance is tested.By comparing the actual value of the soil moisture with the sensor measurement value
the results show that the maximum absolute error of sensor is-5.10%.The sensor can be used for the measurement of the soil moisture at different depth of soil profile
which apparently reflects the moisture gradient.It is suitable for the measurement of soil moisture at different depth of soil profile and application of agroforestry production with low-cost and low power consumption.
Evaluation of capacitance probes for optimal irrigation of citrus through soil moisture monitoring in an entisol profile [J] . Ali Fares,Ashok K. Alva. Irrigation Science . 2000 (2)