高铁静态限界测量的二维扫描传感器的设计和标定

Design and Calibration of Two-Dimensional Scanning Sensor for Static Clearance Measurement of High-Speed Train

针对接触式测量高铁机车静态限界效率低、精度低、耗时长、劳动强度大等问题,基于回转射线簇测量的原理,研制出新型的高铁静态限界二维扫描传感器。传感器安装在运动导轨上,可实现静态限界的高效自动化测量。借助高精度大理石平面对传感器进行标定,建立测量系统的坐标系,结合外部标定,将传感器测量结果转换到轨道坐标系下的三维坐标,从而得到高铁的静态限界测量数据。实验验证,该传感器精度优于1mm,满足了静态限界测量的需求。

Herein,to address the problems of low efficiency and accuracy,long time consumption,and high labor intensity of the contacting measurement on static clearance of high-speed locomotive train,a new two-dimensional scanning sensor of static clearance of high-speed train is developed based on the rotating clustered-ray measurement principle.Static clearance can be efficiently and automatically measured by installing the proposed sensor on a moving guide rail.The sensor is calibrated using a high-precision marble plane,and a coordinate system for the measurement system is established.Sensor measurement results are converted to three-dimensional coordinates in the orbital coordinate system via external calibrations.Thus,the static clearance measurement data of high-speed train can be obtained.Experimental results show that the accuracy of this new sensor is more than 1 mm,which satisfies the requirement of static clearance measurement.