Assembly falloff defect identification method and system of overhead contact system

Abstract

The invention discloses an assembly falloff defect identification method and system of an overhead contact system. Assembly template images slide in different scales of an image to be detected to search a target assembly, a position area image of the target assembly is matched in the image to be detected, and the assembly template images include template images of different assemblies in the overhead contact system; an area of a target connecting piece is positioned in the position area image according to an image edge analysis algorithm; according to the structural relation between the target assembly and the target connecting piece, the target connecting piece is segmented from the position area image in a corresponding proportion; and a gray scale histogram and a gradient feature of the target connecting piece are obtained, whether a suspected falloff defect exists the target connecting piece is determined according to the gray scale histogram of the target connecting piece, whether the suspected falloff defect is true is determined according to the gradient feature of the target connecting piece, the target connecting piece is determined to have the assembly falloff defect if the suspected falloff defect is true, and the target connecting piece is determined to be normal if the suspected falloff defect is false. Thus, the assembly falloff defect can be identified accurately.

Description

technical field [0001] The invention relates to the field of catenary, in particular to a method and system for identifying component shedding defects in the catenary. Background technique [0002] The catenary is a high-voltage transmission line erected in a "zigzag" shape along the sky above the rails in the electrified railway for pantographs to take current. The catenary is the main frame of the railway electrification project, and it is a special form of transmission line erected along the railway line to supply power to the rail vehicles. Generally, it is composed of contact suspension, support device, positioning device, pillar and foundation. [0003] A large number of connecting components such as screws and bolts are used in the catenary to fix related brackets, locators, positioning rods, etc. Once such connecting components become loose or fall off, it has great potential for the safe operation of the catenary Danger. [0004] The existing detection method is ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the inconvenience of manually analyzing the video frame by frame to confirm the component shedding defect, a method for identifying the component shedding defect in the catenary and a system for identifying the component shedding defect in the catenary are proposed

Images