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High-speed rail fastener detection and counting method and system based on machine vision

A technology of machine vision and fasteners, which is applied to railway car body parts, instruments, calculations, etc., can solve the problems of positioning system installation errors, accumulation of positioning errors, and insufficient accuracy, and achieve high positioning accuracy, rapid response, The effect of no cumulative error

Inactive Publication Date: 2017-05-24
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

However, due to the wheel slippage of the photoelectric encoder, the positioning error will increase cumulatively with the increase of the mileage
The positioning system based on photoelectric ranging sensors is not accurate enough due to installation errors; GPS positioning in tunnels, mountainous environments and other environments will be seriously affected

Method used

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  • High-speed rail fastener detection and counting method and system based on machine vision
  • High-speed rail fastener detection and counting method and system based on machine vision
  • High-speed rail fastener detection and counting method and system based on machine vision

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Embodiment Construction

[0041] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0042] Such as figure 1 It shows that the system is mounted on the track inspection trolley through the bracket. After the power is turned on, the system is in standby mode, and the LED lighting devices located on both sides of the lens at the lower part of the chassis start to work. When the host computer sends a start signal to the DSP embedded system located on the upper part of the chassis through the RS232 serial port, the system starts to work, and the image acquisition device (camera 1 and lens 2) located in the center of the chassis begins to continuously capture image data. Through the data line of the BNC interface, Send the image data to the DSP embedded processing system, use the fastener detection algorithm to complete the fastener detection, and then use the proposed fastener counting method to complete the counting of the fasteners, and finally sen...

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Abstract

The invention relates to a high-speed rail fastener detection and counting method and a high-speed rail fastener detection and counting system based on machine vision. The high-speed rail fastener detection and counting system comprises image acquisition equipment, a DSP embedded processing system and two LED lighting devices, and designs a rapid fastener detection method based on area and width characteristics of a fastener. Compared with a fastener positioning methods adopting a photoelectric encoder, a photoelectric ranging sensor, a GPS positioning system and the like, the fastener positioning method based on machine vision has the advantages of high positioning precision, no accumulative error, simple structure, easy establishment, high cost performance and the like. A fastener counting result obtained by the high-speed rail fastener detection and counting system is uploaded to an upper computer, a rail geometric parameter fault position obtained by a rail geometric parameter measurement sensor is marked, the maintenance position is provided for railway maintenance personnel quickly and precisely, and the high-speed rail fastener detection and counting method and the high-speed rail fastener detection and counting system are of great significance to safety early warning of the railway.

Description

technical field [0001] The invention belongs to digital image processing and high-speed rail motorization technology, and specifically relates to a method and system for detecting and counting high-speed rail fasteners based on machine vision, which realizes real-time and accurate detection and counting of rail fasteners, and provides positioning and marking for high-speed railway faults information. Background technique [0002] As of the end of 2015, my country has put into operation more than 19,000 kilometers of high-speed railways, ranking first in the world, with a maximum speed of 350 kilometers per hour, which has greatly promoted the development of my country's transportation. However, maintaining the ever-expanding high-speed rail lines and realizing early warning of railway safety have become urgent problems to be solved. [0003] In order to keep the high-speed railway line in a good state in compliance with the railway technical standards for a long time, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/10B61K9/08
CPCG06T7/0008B61K9/08G06T2207/30164G06T2207/30242
Inventor 杨飞程咏梅姚顺刘楠赵会升孙艳茹禹亮苟斌王会宾田朝旭陈嘉良崔蓝月王华夏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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