激光剪切干涉在导轨直线度安全监测上的应用及特点  

Application of Laser Shearing Interference in Safety Monitoring of Rail Straightness and Its Features

作　　者：王文丹[1] 李大圣[1] 

机构地区：[1]深圳市计量质量检测研究院,深圳518055

出　　处：《中国公共安全（学术版）》2011年第1期137-140,共4页China Public Security(Academy Edition)

摘　　要：直线度是导轨几何量测量领域中一项基本内容,同时也涉及平面度、平行度等几何量的测量基础。导轨直线度方面的安全检测具有测量距离长、数据量大、实时性要求高、现场测试等特点。以准直激光束作为直线基准的测量方法近年来得到快速的发展,激光准直技术在直线度测量中已得到了广泛的应用。尽管激光准直技术存在激光光束漂移、光线弯曲、大气扰动等难以克服的问题,但伴随高精密仪器对导轨精度的要求越来越高,利用激光准直技术对长导轨直线度精确化测量已备受关注。Straightness is one of the basic items in the field of geometrical measurement,and also is related to the basic measurement of flatness and parallelism.The safety testing of rail straightness has some unique characteristics,such as the requirements of long travel distance,larger volume of data,strict real time and work on-site.Recently,the measuring method of using laser beams as the linear reference has developed greatly and widely.Despite of some problems existing such as beam drift,bending and atmospheric perturbation,the application of laser alignment technology in high-precision measurement of long rail straightness is concerned greatly with the increasing requirement of rail accuracy for precise instruments.

关 键 词：激光准直技术 剪切干涉 直线度 长导轨 安全性 

分 类 号：TH741[机械工程—光学工程]