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Automatic recognition method for fatigue fracture of elastic strip of high-speed railway steel rail fastener

A technology for high-speed railways and fatigue fractures, applied in character and pattern recognition, roads, rails, etc., can solve the problems of lack of fast detection of fastener clips, etc., to overcome the waste of manpower and material resources, and improve the detection efficiency

Inactive Publication Date: 2018-03-06
HUAZHONG NORMAL UNIV
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Problems solved by technology

However, most of the inspection methods for rail fastening clips of high-speed railways in my country are only aimed at the broken or severely damaged clips, and there is no effective method for quickly detecting the fatigue fracture (crack) of clips. Effectively prevent the occurrence of potential dangers, so there is an urgent need for fast and accurate rapid analysis and detection methods for the fatigue fracture of fastener clips to improve the accuracy and efficiency of fastener clip health status detection

Method used

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  • Automatic recognition method for fatigue fracture of elastic strip of high-speed railway steel rail fastener

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] When the present invention is used for crack identification of clips, the specific steps are as follows:

[0053] S1: Image preprocessing process:

[0054] S1-1: Input the image to be recognized. Among them, the image to be recognized is taken by an automatic control industrial camera, and the real image obtained in real time, such as figure 1 .

[0055] S1-2: Image denoising: take the median filter of 3×3 template on the input image, and remove the scattered noise in the image while retaining the crack details.

[0056] S1-3: Image grayscale: The image collected by the camera is a 24-bit true color image, which needs to be converted into a grayscale image for subsequent processing.

[0057] S1-4: Image enhancement: Gamma corr...

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Abstract

The invention discloses an automatic recognition method for the fatigue fracture of an elastic strip of a high-speed railway steel rail fastener, and the method comprises the following steps: obtaining a high-speed railway steel rail fastener elastic strip image, and carrying out the preprocessing of the steel rail fastener elastic strip image; locating a breakage-prone region of the steel rail fastener elastic strip image; and carrying out the automatic recognition of the fatigue fracture of the elastic strip in the image of the breakage-prone region through an SVM classification recognizer.The method is used for the quick and accurate automatic recognition of the fatigue fracture of the elastic strip of the high-speed railway steel rail fastener, solves a problem of the waste, caused bymanual detection, of manpower and material resources, and guarantees the detection efficiency to a great extent.

Description

technical field [0001] The invention relates to a method for detecting the health status of high-speed railway rail fastener equipment, in particular to an automatic identification method for detecting fatigue fractures of high-speed railway rail fastener clips. Background technique [0002] High-speed railway has a series of advantages such as high operating speed, large transportation capacity, good safety performance, high comfort, and low environmental pollution. It plays a huge role in my country's transportation, shortening the time distance between cities, and greatly It facilitates people's travel and saves travel time. It is estimated that by the end of 2015, the accumulative mileage of high-speed railways in operation in China will reach 21,183 kilometers, ranking first among all countries in the world. Safe operation is the prerequisite for the success of high-speed rail. Fastener clips are important facilities that directly interact with high-speed trains. Fatigu...

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Application Information

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IPC IPC(8): G06K9/62G06K9/40G06K9/44G06K9/34G06K9/38G06K9/46E01B35/00
CPCE01B35/00G06V10/267G06V10/28G06V10/30G06V10/34G06V10/462G06F18/2411G06F18/214
Inventor 陈小宇李学瑜
Owner HUAZHONG NORMAL UNIV
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