一种单轨列车受电弓滑板磨耗检测系统的设计

The Design of an Abrasion Detection System for Monorail Train Pantograph Slider

针对单轨列车受电弓滑板磨耗问题,提出一种基于线结构光测量技术的受电弓磨耗在线检测方法,该方法利用线激光获取受电弓滑板轮廓畸变图像,并对图像进行图像处理操作从而计算出受电弓滑板的磨耗最大量。首先,当机车驶入指定区域,自动触发摄像机采集受电弓滑板实时状态的光条纹图像;然后将采集到的图像进行预处理,提取光条纹中心,计算滑板的磨耗量;最后根据计算的磨耗量对机车的运行状况进行评估,从而保证机车安全运行。采用磨损后的受电弓滑板实物为检测对象,实测最大磨损量为8.500 mm,使用本文磨耗检测技术得出的受电弓滑板最大磨损量最大绝对误差为0.300 1 mm,实验结果表明,本文方案满足铁路技术标准要求的最大绝对误差值0.5 mm以内的条件。

In view of the abrasion of monorail train pantograph slider,this paper proposes an abrasion detection method for pantograph slider based on structured line light measurement. This method uses line lasers to obtain the distorted images of the pantograph slider＇s profile,and then the images are treated by image processing to calculate the maximum abrasion of the slider. Firstly,when the train is in the designated area,the signal triggers a camera to capture the light stripe image of the pantograph slider automatically,and then,the collected images are pretreated and the center of the light stripe is extracted to calculate the abrasion of the pantograph slider for safe train operation. In this paper,the abrasion of a real pantograph slider is detected,and the real maximum abrasion of the slider is 8. 500 mm; the maximum absolute error of the maximum abrasion of the slider is 0. 300 1 mm based on the calculation method proposed above. The experiments show that this paper＇s method can meet the railway technical standard of the maximum absolute error less than 0. 5 mm.