一种土壤水分检测仪的设计

Design of a soil moisture measuring instrument

在土壤水分检测的各种方法中,传感器法具有其许多优点。本文就是利用土壤水分传感器设计了一种土壤水分检测仪,阐述了其组成和工作原理。试验表明,利用本检测仪测量土壤含水量与烘干称重法测量值的差值在5%以内,具有测量准确度高,测量速度快,显示直观,使用简单,价格低廉,操作方便的特点。

sensor method have many advantages in soil moisture detect compare with other ways. A soil moisture measuring instrument is designed in this paper by using moisture sensor method, and the principle and constitute of it is expatiated. The experiment indicates that the difference between testing of water content soil by this circuit and traditional weighing method is less than 5%. the main character is high precision, testing fast, display visual, simple to use, cheap and easy to operate.