Rail transit contact line abrasion detection device and method

Abstract

The invention discloses a rail transit contact line abrasion detection device and method. The device comprises a camera, a reflector set and laser devices. The camera can acquire an image of a worn area of the contact line; the number of the laser device is two, and laser bars projected by the laser devices can be projected to the circumference of the rail transit contact line and extend to the abrasion area. The reflector set can reflect the light projected on the contact line into the field of view of the camera; the laser devices and the camera are arranged front and back in the axial direction of the rail transit contact line, and light reflected into the camera view field through the reflector set does not cover the whole camera view field. The other part of the image includes a contact line image of the abrasion area. The invention further relates to a detection method, the width of the abrasion section of the contact line can be accurately obtained, and the method has the advantages of being high in automation efficiency and good in applicability.

Description

technical field [0001] The invention relates to the field of visual detection, in particular to a device and method for detecting wear of contact wires in rail transit. Background technique [0002] Catenary maintenance is an important part of electrified rail transit maintenance, and contact wire wear detection is the key and difficult point. When the contact wire interacts with the pantograph of the electric bus, the phenomenon of corrosion and wear on the surface is contact. Wire wear and contact wire wear will cause the cross section of the wire to decrease and the resistance of the wire to increase, resulting in heating of the contact wire and aggravating the wear of the wire; Conduct a contact wire wear measurement. When the catenary contact wire wears to a certain extent, it should be reinforced or replaced. If the average wear of the contact wire of the entire anchor section exceeds 25% of the cross-sectional area of ​​the contact wire, all should be replaced. The av...

AI Technical Summary

Problems solved by technology

[0003] 1) Manual measurement method: the size is obtained by measuring tools such as vernier calipers; it has low efficiency and is easily interfered by subjective factors;

[0004] 2) Image detection method: the section width is analyzed through the contact line image. This method is difficult to achieve accurate segmentation of the worn part and the unworn part, which directly affects the calculation accuracy of the section width.

Images