摘要
Soil properties and water content vary from place to place. The calibration method based on capacitive soil moisture and humidity sensor is carried out. The sensor readings are compared with the mass water content measured by the oven dried method,and the calibration formula of sensor reading and mass moisture content is established.Results show that the sensor reading has a good linear relationship with the mass water content measured by the oven dried method,and has high precision. It can calibrate the mass moisture content of the data obtained from the moisture migration test in the soil column.
由于各地土壤性状各不相同,含水率也不尽相同。开展基于电容式土壤水分湿度传感器的标定方法的研究,将传感器读数与烘干法测得的质量含水率进行对比分析,建立了传感器读数和质量含水率的标定公式。研究结果表明:传感器读数与烘干法测得的质量含水率具有很好的线性关系,具有很高的精度,可以对土柱中水分迁移试验所得的数据进行质量含水率标定。
