机车轮对踏面磨耗的非接触光电检测方法研究  

Research on Measurement of Wheel Set Tread Wear by Non-contact Optoelectronic Detecting Method

作　　者：吴开华[1] 张建华[2] 黄佐华[2] 

机构地区：[1]杭州电子科技大学自动化学院,浙江杭州310018 [2]华南师范大学物理系,广东广州510631

出　　处：《光电子．激光》2005年第3期332-335,共4页Journal of Optoelectronics·Laser

基　　金：广东省自然科学基金资助项目(000689);浙江省教育厅基金重点资助项目(20040446)

摘　　要：提出了机车轮对踏面磨耗的一种非接触光电检测方法。该方法用精密激光位移传感器实现轮缘内侧面的高精度定位,用激光线光源和高分辨率 CCD探测器获取踏面外形,并通过窄带滤波器有效提高图像信噪比(SNR),再用数字图像处理技术获得轮缘厚度和高度 2 个反映踏面磨耗的关键参数。实测表明,该方法的定位精度为 0.03 mm,测量精度为 0.1 mm,重复性较好,测量结果可满足车辆段修现场使用要求。A non-contact optoelectronic measuring method of wheel set tread wear was researched. The method used precision laser displacement sensor to acquire the position of rim inside plane in high accuracy. The tread profile is captured by laser linear source and high resolution CCD sensor. The image SNR is gained by adding narrow band-pass filter. Two key flange wear parameters, flange thickness and height, are obtained by digital image processing technology. Experimental results show that the position accuracy is 0.03 μm and the measuring accuracy is 0.1 mm. The repeatability and accuracy of the method can meet the demand of wheel set maintaining.

关 键 词：踏面磨耗 光电检测 非接触 机车轮 CCD探测器 激光 

分 类 号：TN247[电子电信—物理电子学]