一种远距离激光位移/挠度测量系统的设计

Design of a Laser-Based Displacement Measurement System of a Remote Object

描述一种能够测量远处物体的位移或者挠度的远距离激光位移/挠度测量系统,并对该系统的结构、工作原理以及硬件和软件部分进行了详细的介绍,给出了实验测试结果.该系统由一个激光光源和一个线性测量系统组成.激光光束首先经过校准,然后聚焦在测量系统上来进行长距离精确测量.激光光源和测量系统之间的相对位移反映出了物体的位移或者挠度.该系统使用了一定的信号和图像处理方法来提高系统的精度和准确性,并且使用了长距离无线数字通信,提高了信号传输的稳定性、安全性,避免了长距离信号线布线的繁琐.该系统还使用单片机系统和8位数码管结合的方式进行数据计算和显示,不再依赖计算机,使测量系统具有更好的便携性.由于该测量系统具有高精度、高准确度的特点并且结构简单、成本低廉,将有良好的应用前景.

A laser-based displacement measuring system is described, which can detect displacement or deflection of an object in a long distance. Experimental results are presented. The structure, working principle, hardware and software are also introduced. The system consists of a laser source and a linear detector system. In order to achieve a remote measurement, the laser beam is first collimated, and directed to the detector array, which is attached to the object to be measured. The relative movement between the laser source and the detector will provide a measure to the displacement or deflection of the object. Some signal and image processing algorithms have been used to enhance the resolution and accuracy of the system. Techniques for long distance wireless digital signal and data transmission have been investigated, which in- creases the stability and security of the system and gets away from the trouble of distributing lines. MCU and LED have also been investigated, which makes the system more convenient. The features of the current displacement measuring system include high resolution and accuracy while still keeping a relatively simple structure and a low cost. Due to its features, perspective of its appreciation should be wide.