流溪河灌区渠首枢纽工程自动量水系统

An Automatic Flow Measurement System For The Canal Headwork of Liuxi River Irrigation District

本自动量水系统，分别由信息采集、传输、微机与外部设备、保护系统组成．本文着重介绍了该系统的设计、拦河闸水位～流量关系的率定与函数化、微机与外设接口、系统防雷电及2P－5型防雪板等关键技术的研制．本系统已运行二年，运行情况正常并达到了设计要求．

The system built for automatic flow measurement is to meet the needs of flood controland water management. It consists of information collection, transmission, microcomputer, peripher-al equipment and a protection part. Having run for one year, it works well and gets the design goal.This paper centres on introducing such important techniques as rating and functioning the relation be-tween the discharge and water level of river gate, interface of microcomputer and peripheral equip-ment, how to protect the system from lightning and the manufacture of the type 2P- 5 lightning ar-rester board.