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tu rang han shui liang jian ce dian lu de yan zhi
Author(s): 
Pages: 24-26
Year: Issue:  7
Journal: WATER SAVING IRRIGATION

Keyword:  土壤含水量检测电路FDR;
Abstract: 首先介绍了FDR系统的测量原理、测量方法及其在土壤水分监测中的应用,然后利用FDR和单片机AT89S8252研制开发了土壤含水量检测电路,该电路由水分传感器、信号调理电路、显示电路、微处理器等几部分组成,测量的数据可经由串口传到上位机.试验表明:利用本电路与烘干称重法分别测定土样的体积含水率,其相对误差不超过3%,具有测量准确度高、测量速度快、显示直观、价格低廉、操作方便等特点.
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