Pantograph slide plate unparallelism detection method

Abstract

The invention relates to the technical field of pantograph anomaly detection, and discloses a pantograph slide plate unparallelism detection method. The method comprises the following steps: inputtingdifferent types of pantograph images in real time; performing filtering and denoising processing on the pantograph image through a Gaussian smoothing method; removing contour interference in the vertical direction through gradient calculation, conducting morphological processing and texture feature calculation, and extracting a pantograph image contour; screening out interference straight lines,carrying out straight line clustering judgment, and extracting a pantograph pan image; acquiring spatial geometrical characteristics of the skateboard according to the pantograph skateboard image, andjudging the abnormal state of the skateboard. The technical scheme is insensitive to a light source and is suitable for different illumination conditions; algorithm parameters are convenient to modify and can also be operated by non-professionals; the on-site applicability is high, and the method is suitable for extracting different types of pantographs under multiple different on-site conditions; the detection accuracy is high, and the false detection rate and the missing detection rate are low.

Description

technical field [0001] The invention relates to the technical field of pantograph abnormality detection, in particular to a method for detecting non-parallel pantograph sliding plates. Background technique [0002] The locomotive pantograph is a device for electrified railway electric locomotives to receive current from the catenary wire. Its slide plate is in direct contact with the catenary wire, and receives current from the catenary wire for use by the locomotive. The quality of the structure of the pantograph slide directly affects the safe and reliable operation of the train, and its failure may even cause transportation interruption. If the pantograph slide can be monitored accurately in real time, the probability of pantograph failure will be greatly reduced. [0003] At present, there are mainly the following methods for detecting the abnormality of the pantograph slide plate structure: 1) the traditional manual boarding detection method, which has the disadvantage...

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Problems solved by technology

[0003] At present, there are mainly the following methods for detecting the abnormality of the pantograph slide plate structure: 1) the traditional manual boarding detection method, which has the disadvantages of low efficiency, heavy workload, and inability to detect the running pantograph; 2) based on optical fiber 3) Ultrasonic detection technology, the disadvantage of this technology is that the characteristics of the ultrasonic sensor itself are greatly affected by the external environment, and the sound wave The principle of spindle-shaped emission leads to insufficient wear measurement accuracy of the device, and it cannot be used normally in rainy and foggy weather

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