Online detection device and method for pantograph steering knuckle based on image processing

Abstract

The invention discloses an online detection device and method for a pantograph steering knuckle based on image processing. The device comprises three parts such as an image acquisition module, a datatransmission module and an image processing module, wherein the data transmission module transmits image data acquired by the image acquisition module to the image processing module, and the image processing module judges whether a steering knuckle exits or not in a pantograph steering knuckle image captured in real time by using an active shape model learning algorithm. The method comprises the steps of firstly performing preprocessing on an acquired image, wherein the preprocessing comprises filtering, image enhancement and edge detection; then performing feature point marking on the steering knuckle image, and building an ASM model; then carrying out initial region positioning on the steering knuckle; and finally performing accurate positioning on the steering knuckle according to the built steering knuckle model and initial region positioning, and judging whether the steering knuckle is absent or not. The online detection device and method are convenient in structure layout, stablein 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 processing-based on-line pantograph horn detection device and method. 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, accurate detection and identification of pantograph horns in a timely and effective manner is an important measure to ensure pantograph-catenary safety. It can not only prevent various safety accidents, but also provide...

AI Technical Summary

Problems solved by technology

Although this method can realize online diagnosis of pantograph slide faults, the system has strict requirements on the installation location of key hardware, and the algorithm adopted by the system cannot effectively eliminate the interference of the surrounding environment on image quality

When the color of the surrounding background environment is close to the color of the skateboard, the upper and lower edges of the pantograph skateboard cannot be correctly extracted, resulting in low detection accuracy, which does not meet the actual application in the field

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