Railway vehicle bolt looseness detection method and system

Abstract

The invention relates to a railway vehicle bolt looseness detection method and system. The railway vehicle bolt looseness detection method comprises the steps: S1, acquiring a plurality of railway vehicle key part images at bolts under different illumination conditions; S2, cutting each image to a set size; carrying out manual marking on each image; S3, establishing and training a key part positioning network; S4, setting a cutting layer; S5, establishing and training a bolt looseness detection network; and S6, performing image testing. The railway vehicle bolt looseness detection system comprises a multispectral time-sharing light source, an image acquisition device, an image processing module, a key part positioning network building and training module, a cutting layer setting module, a bolt looseness detection network building and training module and a storage and test module. The railway vehicle bolt looseness detection method and system can monitor the bolt state of a key part, can give the specific position information of the loose bolt, are high in the detection speed, can achieve real-time online detection, can improve the detection efficiency, and can improve the detection accuracy.

Description

technical field [0001] The invention belongs to the technical field of railway fault detection, and relates to a rail vehicle bolt loose detection technology, in particular to a rail vehicle bolt loose detection method and system. Background technique [0002] Bolts are commonly used fasteners for rail vehicles such as EMUs, urban rails, and subways. Due to the influence of factors such as corrosion, vibration, and impact during driving, it is easy to cause deformation, loosening, breakage, or fall-off of bolts, resulting in equipment failure. faults, and even cause major safety accidents. Therefore, the loose inspection of bolts has always been an important item in the daily inspection of vehicles. [0003] In order to ensure the safe operation of rail vehicles, the staff need to check the status of the bolts every day. One of the inspection items is to check whether the bolts are loose. Usually, there are hundreds or even more bolts on a car, and there are many trains in...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the above-mentioned problems such as difficulty in online detection and low detection accuracy existing in existing bolt detection methods, and provides a method and system for detecting bolt looseness in rail vehicles, which can detect whether bolts are loose on-line in real time, with high detection efficiency, and adopts a deep network The self-learning detection algorithm of the structure can effectively improve the accuracy of detection

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