农田灌区地下水位自动监测系统设计

Design of Automatic Monitoring System of Undergound Water for Farmland Irrigation

为将农田灌区地下水位控制在最佳范围,避免严重超采,需要准确了解灌区地下水位的动态变化情况。为此,设计了地下水位自动监测系统,系统主要由灌溉机井水位监测终端、数据监测中心和传输网络组成。灌溉机井水位监测终端为客户端,利用水位传感器测量水压,并换算成水位高度,通过GPRS无线模块接入VPN网络,建立与监控中心服务器的TCP/IP网络连接,把采集到的数据整理后再上传至监控中心;数据监测中心接收、处理、分析和显示从各终端发来的数据,并将数据存入数据库ACCESS2003中。通过对灌区6口机井样本进行实验表明,该系统能够准确实时地监测地下水位的高度,精度达到0.01m,可为灌区合理管理供强有力的数据支持。

To control the undergound water level of irrigated farmland in the optimal range,the dynamic change of irrigation groundwater level is required to be understood to avoid over-exploitation.The automatic monitoring system of undergound water level,which is composed of irrigation well water level monitoring terminal,data monitoring centre and transport network.As the client,the irrigation well water monitoring terminal uses water level sensor to measure water pressure and convert to water level,and establish a TCP/IP network connection with data monitoring centre through GPRS wireless module to access VPN and upload the collected data to the monitoring center.The data monitoring centre receives,processes,analyizes and displays the data from all the terminals,and stores them in the database ACCESS2003.Experiments for the 6 samples of irrigation wells show that the system can accurately monitor the height of undergound water in real-time,the accurccy is 0.01m,which provides a strong data support for rational management of irrigation area.