轮对综合参数光电自动检测系统

Optoelectronic Automatic Measuring System for Wheel Set Parameters

车辆轮对尺寸参数和踏面缺陷的检测是保障车辆运行安全的重要措施。介绍了一种基于光电检测技术的轮对综合参数自动检测系统。该系统运用精密激光位移传感及数字图像处理方法,并结合精密运动控制,实现了轮缘厚度、轮缘高度、车轮直径、轮对内侧距、轮辋厚度、轮辋宽度等主要尺寸参数,以及踏面擦伤和剥离等表面缺陷的非接触自动检测。该系统的尺寸参数测量精度为0.2mm,擦伤深度测量精度为0.1mm,剥离长度测量精度为1.0mm。现场实验结果表明,系统的检测精度和重复性可满足车辆段修现场使用要求。

The measuring of geometrical profile and tread defects of wheel set is an important step for the safety of vehicle running. It introduced an automatic measuring system of comprehensive parameters of wheel set based on optoelectronic detecting technique. The system used precision laser displacement sensor, digital image processing and motion control methods to implement the non-contact automatic measuring of wheel set parameters. These parameters included the flange thickness,flange height,wheel diameter,rim inside distance , rim inside thickness ,rim width ,scotching and flaking on wheel tread. The accuracies for geometrical parameters, scotching depth and flaking length reached 0.2mm, 0. 1mm and 1.0mm respectively. Experimental results showed that the repeatability and accuracy of the system meet the demand of wheel set maintaining.