介绍一种分布式微小位移精确测量系统, 该系统基于网络通信技术, 采用 FPGA和线阵 CCD实现。在系统中, 通过 FPGA逻辑设计实现线阵 CCD的高速驱动, 使线阵 CCD的数据传输率达到每秒 5 000帧, 网络通信技术实现了数据的远距离传输和支持多站能力, 基于 VB平台编写 PC机控制程序。系统已应用在一维微小形变的测试中, 可以支持 32个线阵 CCD测试节点, 节点数据传输长度大于 1 000 m, 测量精度达到 100 μm。

A precise micro-displacement measurement system based on network communication is introduced. Network communication, FGPA and the linear CCD are adopted in the system. The linear CCD generates 5 000 line data per second. The FPGA processes the data synchronously. The network communication is applied to implement long-distance data transmission and multi-station communication. The hardware system is controlled by the PC control program, which is developed by VB6.0. The whole system demonstrates high reliability, and it is applied in the one-dimensional micro-displacement measurement system with a precision of 100 μm.