激光投线仪的多维校准系统  

Multi-dimensional calibration system for laser demarcation instrument

作　　者：刘盼盼[1] 许流博 乐意[1] 陈少阳[1] 许贤泽[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]武汉大学经济与管理学院,湖北武汉430072

出　　处：《光学精密工程》2014年第6期1486-1493,共8页Optics and Precision Engineering

基　　金：国家973重点基础研究发展计划资助项目(No.2011CB707904);武汉市科技局应用基础研究计划资助项目(No.2013010501010121)

摘　　要：分析了激光投线仪的工作原理及其基准误差的产生原因。基于此,提出了一种新型的激光投线仪校准系统,用于弥补传统校准方式占地面积大、精度值难以量化、人为因素影响较大等缺点。研究了一套采用平行光管角度测量与机器视觉测量结合的检测方法,通过检测激光线的直线度和垂直度来实现仪器的校准。该系统由8个采样管构成数据采集平台,从而达到多维校准的要求。采用VC++与Matlab混合编程的方式编写系统软件,通过调用动态链接库的方式使两种语言相结合。实验测试表明,该系统操作简单,效率高;与传统校准方式相比,其节约了场地长度,整个系统的占用空间控制在8m3以内;另外,系统提高了校准精度,其水平线和铅垂线平均精度可以达到±0.2mm/5m,正交线精度可以达到±23″。Abstract： The working principles of Laser Demarcation Instruments （LDIs） and their standard errors were analyzed. A new set of Multi-dimensional Calibration System （MDCS） for the LDIs was devel-oped to solve these shortcomings of traditional calibration systems on larger floor spaces, poor accuracy and high influential artificial factors. A solution based on collimator angle measurement and ma-chine vision measurement was designed to calibrate the LDI by measuring the straightness and verticality of laser lines. The data capturing platform of the system consisted of 8 collimators was used toachieve the multi-dimensional calibration. The software and Matlab, and they were connected by calling a Dyn that the new s whole system horizontal and ystem ＇s easy to o takes up is within perate, and is more e vertical lines can reach ,which saves the ±0.2 mm/5 m, was amlc designed by mixed programming of VC＋＋ Lined Library（DLL）. Experiments show fficient and more credible. area of work place. Moreo The ver, t and the orthogonal line is ±23＇＇ space that the he accuracy of , which meets the requirement of calibration accuracy.

关 键 词：激光投线仪 校准系统 平行光管 机器视觉 混合编程 

分 类 号：TN249[电子电信—物理电子学]