Online detection device and method for abrasion of pantograph sliding plate based on images

Abstract

The invention discloses an online detection device and method for the abrasion of a pantograph sliding plate based on images. The device comprises an image acquisition module, a data transmission module and an image processing module, and is characterized in that the data transmission module transmits image data acquired by the image acquisition module to the image processing module to process. The method comprises the steps of firstly performing denoising on an original image based on a cascade filter capable of dynamically calibrating the filtering strength, and enhancing a target area by adopting a local contrast enhancement algorithm based on the local standard deviation; then extracting an image contour by using a threshold adapting Canny edge detection algorithm, positioning the edges on the sliding plate by using Hough transformation, and searching a datum line according to the edge positions on the sliding plate; and finally converting a pixel distance between the upper end lower edges of the sliding plate into the actual sliding plate residual thickness, and acquiring an abrasion curve of the sliding plate. The online detection device and method are convenient in structurelayout, stable in system and capable of performing high-precision online non-contact measurement.

Description

technical field [0001] The invention relates to the technical field of traffic safety engineering, in particular to an image-based online detection device and method for pantograph slide wear. Background technique [0002] The pantograph slide is the only part in contact between the train and the catenary, and is the most important power-taking device for the entire train power supply system. During the operation of the train, the pantograph slide plate is constantly in contact with the catenary, causing wear and tear; if the wear is serious, the catenary wire clip will be in the crack or deep groove on the surface of the slide plate, causing mechanical collision between the bow head and the catenary, resulting in power failure. Bow malfunction. Therefore, timely and effective accurate detection and identification of pantograph slide wear is an important measure to ensure pantograph-catenary safety. It can not only prevent various safety accidents, but also provide a basis ...

AI Technical Summary

Problems solved by technology

The equipment needs to be installed at the level of the train line without curves, and the system is seriously affected by the weather and the environment. When there are oil stains, water droplets, and ice on the surface of the skateboard, the detection error is relatively large, and rainy, snowy, and foggy days are all harmful. Data acquisition has a great impact, resulting in low accuracy of skateboard wear detection

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