激光挠度、位移测量系统的研究与开发

Research on laser deflecto-meter and displacement measurement system

利用激光器及紧贴式线性固体图像传感器、信号处理部分构成激光挠度测量系统 ,用以测量大型建筑结构的挠度 ,在完成实时挠度测量的基础上 ,根据大型建筑结构变形监测的要求 ,对测量系统进行了进一步的开发 ,完成了用于测量结构在水平及垂直方向 (x ,y方向 )位移的二维位移测量系统。实验证明 ,挠度测量系统的测量范围可以达到 2 10mm ,分辨率优于 0 1mm ,可完成结构的静态及动态挠度测量 ;二维位移测量系统的测量范围为 2 10mm× 30 0mm ,两方向的分辨率分别优于 0 1mm和 0 2mm。

In this paper,a new system is developed for the measurement of deflection of large structures.The laser deflectometer system is composed of laser source and linear solid image sensor and its hardware unit for signal processing.In this paper the foundamental principle of the system is described.Based on the deflectometer system,a two-dimension system for displacement measurement is also introduced according to field requirement.