Device and method for monitoring abrasion of pantograph slide plate based on sub-pixel edge detection

Abstract

The invention discloses a device and method for monitoring the abrasion of a pantograph slide plate based on sub-pixel edge detection. The device comprises a field control and data acquisition unit, aremote transmission unit, a data analysis unit, a data storage and release unit and a client access unit. The method comprises the steps that firstly an industrial camera collects a half-pantograph image of the pantograph slide plate; secondly, filtering processing is performed on the image; then the processed image is processed by adopting an adaptive Canny edge detection algorithm to obtain upper and lower edges of the pantograph slide plate with whole pixels, and sub-pixel edge extraction is performed on the upper and lower edges; coordinates of a sub-pixel slide plate edge image are transformed into world coordinates through camera calibration, and a residual abrasion curve of the half-pantograph slide plate is obtained; and finally, a complete residual abrasion curve of the slide plate is obtained through curve integration, the minimum residual thickness of the abrasion region is obtained so as to judge whether it is necessary to replace the slide plate or not. The device adoptsa non-contact online measurement method, and has the advantages of good stability and high detection accuracy.

Description

technical field [0001] The invention belongs to the technical field of traffic safety engineering, in particular to a pantograph sliding plate abrasion monitoring device and method based on sub-pixel edge detection. Background technique [0002] With the rapid development of urban rail transit in my country, the number of cities with rail transit is increasing, and there are more and more lines. The safety problems of train operation are becoming more and more obvious. Therefore, it is very important to monitor the status of some key components of urban rail trains. The pantograph of the urban rail train is an electrical device that transmits electrical energy from the catenary to the urban rail train, and is one of the most important devices among all the devices of the urban rail train. During the operation of urban rail trains, the pantograph slides are in direct contact with the catenary wires in the catenary, thereby obtaining current from the catenary for use by the tr...

AI Technical Summary

Problems solved by technology

Among the above methods, some methods have complex detection structures and low reliability; some can only reflect part of the state of the pantograph, but cannot completely detect the state of the pantograph, and there are certain limitations in implementation

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