岩土工程位移实时监测系统研究

针对既有岩土工程位移监测方法存在的问题与不足，开发了无接触、遥控、高精度和高可靠性的激光位移实时监测系统。系统采用半导体激光器提供基准激光束、光纤-光敏管阵列实现光电转换、单片机数字电路进行数据的采集和预处理、数字信号经调制解调器进入监控计算机，最终由计算机实时绘制位移-时间曲线。该系统目前已投入隧道围岩位移实时监测的实际工程应用之中。

A Study on Instant Displacement Monitoring System for Geotechnical Engineering

Regarding the problems and weaknesses of the traditional displacement monitoring system for geotechnical engineering, a new remote monitoring system is developed. This system is based on the application of semiconductor lasers. Its photoelectric transformation is realized by the matrix of light fiber and photodiodes .Single chip microcomputer is used to collect and preprocess the data. Digital signals get into the monitoring computer through a modem. Finally the displacement-time curve can be drawn on the computer. An application of the system in a road tunnel is also introduced in this paper.