基于激光光斑识别的位移监测研究

Peng Deli, Zhao Mengke, Wang Jie, Zhao Xuefeng
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引用次数: 0

摘要

大型结构位移的实时准确监测是结构健康监测的难点。研究了一种激光位移监测系统。当结构的倾斜可以忽略不计时,可以实现对结构水平位移的精确实时监测。该系统由激光发射机、接收板和摄像机组成。激光发射器固定在基准面上。摄像机和接收板都固定在被监控的结构上。当结构发生水平位移时,摄像机监测激光光斑在接收板上的位置变化。结构的实际位移是通过相机的内置程序获得的。为了评估系统的精度,我们进行了两组模型实验,并通过对比实验数据得出结论,确定我们的激光位移监测系统能够以较高的精度监测水平位移。
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Research on displacement monitoring based on laser spot identification

It is difficult to monitor the displacement of large structures accurately in real time for the health monitoring of structures. We studied a laser displacement monitoring system. When the inclination of the structure is negligible, it can achieve real-time monitoring of the horizontal displacement of the structure precisely. The system is composed of a laser transmitter, a receiver board and a camera. The laser transmitter is fixed on the datum plane. Both the camera and the receiver board are fixed on the structure to be monitored. When the structure has horizontal displacement, that camera monitors the position variation of the laser spot on the receiver board. The actual displacement of the structure is obtained through the camera's built-in program. To evaluate the accuracy of the system, we performed two sets of model experiments and obtained the conclusion by comparing the experimental data, determining that our laser displacement monitoring system can monitor horizontal displacement with a high degree of accuracy.

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