RS-485在闸坝站自动测报系统中的应用

Technology of RS-485 applied in Automatic Telemetry System of Gate and Dam

由于RS-485具有远距离传输和多个串接入口等优点,可以实现用单RTU对闸坝站不同测点多个参数的自动测报,故RS-485接口在闸坝站自动测报系统中获得应用。简单介绍了RS-485的接口电路及网络配置,通过对济南小清河和上海黄浦江防汛自动测报系统中人工和遥测数据的比较,得出利用RS-485采集数据,传输准确率很高。

Since it has the excellency of long distance transmission and many serial ports, RS-485 is applied in automatic telemetry system of gate and dam to measure and report different parameters from multi-points of a station by RTU. This paper is focus on RS-485 interface and its corresponding network configuration. Taking Xiaoqing river of Jinan and Huangpu River of Shanghai for instance, the author draws a comparison between manual data and telemetric data from automatic telemetry systems. Collected Data transmitted through RS-485 are proved to be highly accurate.