环刀称重法介电类土壤水分传感器公式率定

Dielectric Type Soil Moisture Sensor Formula Calibration Based on Ring Knife Weighing Method

传感器是墒情自动监测仪器设备重要组成部分,是决定墒情监测数据精度的核心器件,科学合理进行传感器精度校准(率定)十分重要。从生产实际出发,依据有关技术规范和文献成果,利用被测介质中表观传感器输出电信号随着土壤含水量变化而改变这一原理,系统阐述了环刀称重法进行介电类土壤水分传感器公式率定方法,为进一步规范实验室土壤水分传感器率定流程和技术要求提供借鉴和参考,为研究土壤物理特性、墒情实验和墒情监测与评价等提供技术支撑。

The sensor is an important part of the automatic monitoring equipment of soil moisture ,which is the core device that determines the accuracy of moisture monitoring data. It is very important to scientifically and rationally calibrate the sensor accuracy. Based on the actual production, according to the relevant technical specifications and literature results, this paper systematically described the dielectric type soil moisture sensor fornmla calibration based on ring knife weighing method, according to the principle that the measured medium apparent sensor output signal will change with the soil moisture changing, so as to provide reference for further standardizing the process and technical requirements of the laboratory- soil moisture sensor, and provide technical support for study on the soil physical characteristics, soil moisture experiment, and moisture monitoring and evaluation.