激光光斑在动态位移测量中的应用研究  

Research on the application of laser spot in dynamic displacement measurement

作　　者：吴鹏浩 钱国明[1] WU Penghao;QIAN Guoming(College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院,江苏南京210023

出　　处：《电子设计工程》2023年第14期132-136,共5页Electronic Design Engineering

摘　　要：动态位移是土木工程中一个重要的测量参数,传统的测量方法往往受限于测量条件,因而造成测量精度较低或实施成本较高。基于简化动态位移测量的目的,文中利用激光光斑作为动态位移测量的靶标,提出了一种基于最小二乘法拟合椭圆的改进算法,增强了算法的抗干扰能力,提高了测量精度。通过在位移滑台上架设激光笔进行实验,测得位移误差在0.5个像素之内,验证了该方法的可行性与准确度,较为简便地实现了动态位移的测量。Dynamic displacement is an important measurement parameter in civil engineering.Traditional measurement methods are often limited by conditions,so the measurement accuracy is low or the implementation cost is high.For the purpose of simplifying dynamic displacement measurement,an improved ellipse fitting algorithm based on least square method is proposed by using laser spot as the target of dynamic displacement measurement.This method enhances the anti⁃interference ability of the algorithm and improves the measurement accuracy.Through the experiment of setting up a laser pen on the displacement slide,the displacement error is within 0.5 pixels,which verifies the feasibility and accuracy of this method,and realizes the measurement of dynamic displacement easily.

关 键 词：土木工程 动态位移 激光光斑 椭圆拟合 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]