摘要
为了实现铁路机车限界的高效率、高精度测量,建立了一套基于激光扫描的限界检测仪。该检测仪通过固定在支撑框架四周的测距传感器来完成机车截面各部分扫描测量,重点研究了现场高精度标定方法,通过自行设计的标定卡规,借助激光跟踪仪完成系统参量标定。由测距传感器测得结果,结合系统参量标定数据,解算出所有被测点在铁轨坐标系下的3维坐标,进而求得截面轮廓到标准限界的距离,完成限界测量。结果表明,该系统测量效率高、测量精度达到±0.5mm,满足限界测量需要。
In order to achieve the railway locomotive gauge measurement with high efficiency and high precision, a scanning laser-based gauge detector was designed. The cross-section scanning measurement was realized by fixing ranging sensors around the support frame. The field high-precision calibration method was focused. The system parameter was calibrated with the self- designed calibration card and the laser tracker. The system parameters, combined with the ranging sensor measurements, were used to calculate the 3-D coordinates of all the measured points in the rail coordinate system, and then the distance between the cross-sectional profile and the standard gauge was calculated so that the clearance was measured. Field experiments show that the system is in high efficiency and the system measurement accuracy of ± 0.5ram meets the need of bound detection.
出处
《激光技术》
CAS
CSCD
北大核心
2013年第1期32-35,共4页
Laser Technology
关键词
测量与计量
铁路限界
标定方法
标准限界
measurement and metrology
railway clearance
calibration method
standard gauge
