Automatic on-line diagnosis method for freight train coupler tail cotter position faults and system

A technology of coupler flat pins and freight trains, which is applied to the automatic online diagnosis of faults in the coupler pins of freight trains, and in the field of freight train fault diagnosis.

Inactive Publication Date: 2016-01-20
BEIHANG UNIV
View PDF10 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there is no literature report discussing the visual diagnosis method of hook bolt flat pin bolts

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automatic on-line diagnosis method for freight train coupler tail cotter position faults and system
  • Automatic on-line diagnosis method for freight train coupler tail cotter position faults and system
  • Automatic on-line diagnosis method for freight train coupler tail cotter position faults and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] Such as figure 1 As shown, five high-speed cameras are installed in the automatic on-line diagnosis system of the freight train coupler flat pin position failure of the present invention to simultaneously capture the dynamic images of the moving train, and the whole diagnosis process is divided into two parts, the positioning part and the identification part . Since the high-speed camera is installed in the field, the imaging of the coupler pin may vary greatly due to different environmental conditions, so it is difficult to find existing mature features to represent the shape of the coupler pin. To solve this problem, a new type of feature called Multi-Dimensional Feature (MDF) is proposed. MDF contains features of 7 dimensions: normalized gradient magnitude and gradient histogram in 6 directions. In order to cope with the change of the scale of the hooktail pin in the image, a fast algorithm is also designed to calculate the multi-scale image features. This algorith...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an automatic on-line diagnosis method for freight train coupler tail cotter position faults and a system. The system comprises an image acquisition portion and a diagnosis portion, wherein the diagnosis portion comprises a positioning module and an identification module, the image acquisition portion is used for acquiring a coupler image, the coupler image is positioned and identified respectively by the positioning module and the identification module in the diagnosis portion, the positioning module is used for determining a position of the coupler tail cotter in the coupler image, the identification module is used for determining whether a bolt is lost according to the coupler image acquired by the positioning module, through the positioning module, normalized gradient amplitude characteristics and gradient histogram characteristics in six directions are combined to form composite dimension characteristics, the position of the coupler tail cotter can be acquired by utilizing a linear support vector machine (SVM); for the identification module, difference between the normal coupler tail cotter image and a bolt-lost cotter image are extracted by utilizing Haar characteristics, and an Adaboost decision tree is taken as a final classifier to determine whether a fault is generated.

Description

technical field [0001] The invention relates to an automatic on-line diagnosis method and system for the failure of a freight train coupler flat pin, which belongs to the freight train fault diagnosis technology. Background technique [0002] The coupler buffer device is an important part of the freight train connection system. It is mainly composed of two parts: the coupler and the buffer. The coupler and buffer are held together by bolts on the coupler flat pin. If the coupler bolts are lost, the coupler will separate from the buffer, which can lead to separation between the train bodies, resulting in a major accident. Therefore, fault diagnosis is the key to ensure the safe operation of freight trains. To ensure the connection between the coupler and the bumper, the coupler bolts are usually checked manually by experienced inspectors. However, this detection method is very labor-intensive and time-consuming, which brings high maintenance costs and limits the improvemen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/2411
Inventor 魏振忠郑超张广军
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap