Online detection system and method for hard spots of overhead line system

Abstract

The invention provides an online detection system and method for hard spots of an overhead line system, and the system comprises two visual probes which are respectively disposed at two sides of the top of a vehicle body. In each visual probe, a plurality of laser modules project monochromatic laser beams to the area where the carbon contact strip of the pantograph is located; a camera aligns to the back of the pantograph carbon contact strip to obtain an image of an area where the pantograph carbon contact strip is located; a lens is installed on the camera and images the area where the pantograph carbon slide plate is located on the imaging surface of the camera; an optical filter is installed on the lens to filter useless environment interference light; a retro-reflection mark is fixedat the bottom of the pantograph carbon slide plate, and an image of the retro-reflection mark is acquired through the camera; and a controller is in control connection with the camera and the laser module through cables and reads image data of the camera. And meanwhile, processing the acquired image data to obtain a hard point detection result. The system is not interfered by strong current of a power supply system and is higher in reliability; accelerations in three directions are achieved, information is richer, and more dimensions are achieved.

Description

technical field [0001] The invention relates to a detection technology in the technical field of rail transit, in particular to an on-line detection system and detection method for catenary hard spots. Background technique [0002] With the rise of electrified railways, urban rail transit has gradually become an important thrust to promote urbanization. Pantograph-catenary system, as the main power supply mode of subway vehicles, supports the stable flow and safe operation of vehicles. However, the complex service environment of trains leads to many factors affecting the quality of train flow. Therefore, the resulting train operation status detection Problems such as fault prevention and detection are becoming more and more important. [0003] In the pantograph-catenary system, the catenary is the main power supply equipment of the traction power supply system, and the pantograph is the current receiving equipment of the train. The sliding plate of the pantograph head is i...

AI Technical Summary

Problems solved by technology

For the detection system based on geometric parameters, the speed pressure is too high and it is difficult to realize

Another more serious problem is that the existing geometric parameter visual detection methods are severely affected by factors such as direct sunlight, bright backgrounds such as blue sky and white clouds, and often have wrong geometric parameter detection results, and the practicability cannot meet the requirements

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