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Breaking fault detection method for cross rod body of bottom part of railway wagon

A railway freight car and fault detection technology, which is applied in image data processing, instruments, calculations, etc., can solve problems such as low efficiency and poor robustness, achieve high detection efficiency, improve feature extraction, and improve stability and accuracy.

Active Publication Date: 2020-05-01
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of low efficiency and poor robustness in the current crossbar detection

Method used

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  • Breaking fault detection method for cross rod body of bottom part of railway wagon
  • Breaking fault detection method for cross rod body of bottom part of railway wagon
  • Breaking fault detection method for cross rod body of bottom part of railway wagon

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specific Embodiment approach 1

[0038] Specific implementation mode one: refer to figure 1 To describe this embodiment in detail,

[0039] The method for detecting the breakage fault of the cross rod body of the bottom part of the railway wagon comprises the following steps:

[0040] 1. Image collection and rough positioning

[0041] A camera or video camera is used to shoot a moving truck, and a line array camera can be used for image collection. After the truck passes through the device, obtain high-definition grayscale full-vehicle images. Image quality will be affected by natural conditions and human factors. For example, the influence of natural conditions includes: rain, snow, mud stains, light, etc.; the influence of human factors includes: oil stains, black paint, installation differences of equipment, etc. Therefore, the intersecting body itself and the background area in a large number of intercepted rectangular images of crossing rod parts will have certain changes due to the interference of ar...

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Abstract

The invention discloses a breaking fault detection method for a cross rod body of a bottom part of a railway wagon, and belongs to the technical field of freight train detection. The objective of theinvention is to solve the problems of low efficiency and poor robustness of existing cross rod body detection. The method comprises the following steps: acquiring an image and extracting an image containing a cross rod body area, rotating two rod bodies of a cross rod to be vertical by corresponding fixed angles respectively, and cutting out the image containing the rod bodies; constructing a sample data set, and training a breaking fault segmentation network for the cross rod body; in the detection process, collecting a real vehicle passing image, extracting an image containing a cross rod body area , rotating two rod bodies of the cross rod to be perpendicular to each other at corresponding fixed angles, and cutting the image containing the rod bodies; recording the image as a to-be-detected image; and inputting the to-be-detected image into the breaking fault segmentation network for the cross rod body to obtain a binary image, judging that the cross rod body is broken, and givinga fault alarm. The invention is used for detection of the cross rod body of the bottom part of the railway wagon.

Description

technical field [0001] The invention relates to a broken fault detection method for a cross bar body of a bottom part of a railway freight car. The invention belongs to the technical field of freight train detection. Background technique [0002] The broken fault of the cross bar at the bottom of the railway wagon is a fault that endangers the safety of the train. For a long time, manual inspection of images has been used for fault detection of broken crossbars. Vehicle inspectors are prone to fatigue during the work process, and are prone to missed and wrong inspections. It is difficult to guarantee the accuracy rate, and the efficiency of manual inspection is not high. [0003] The truck crossbar is a large part, so if the existing technology is used for automatic detection, the processing object is relatively large, the processing capacity is large, and the processing speed is relatively slow. At the same time, due to the small area occupied by the rod itself and the s...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/0008G06T2207/10004G06T2207/20081G06T2207/20084G06T2207/30164
Inventor 燕天娇
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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