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System and method for detecting deficiency of railway fasteners on basis of laser and vision

A railway fastener and detection system technology, which is applied to railway car body components, radio wave measurement systems, railway vehicle shape measuring devices, etc., can solve the problems of fastener missing detection technology, railway fastener missing high-speed detection system, etc., to achieve Achieve high-speed identification and detection, reduce the amount of processed information, and facilitate maintenance

Inactive Publication Date: 2012-07-11
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

[0006] In order to solve the problems of existing fastener missing detection technology, the present invention proposes a high-speed detection system and method for railway fastener missing based on laser and vision, which effectively solves the contradiction between detection accuracy and high-speed train operation, and realizes railway fasteners. high-speed detection and identification

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  • System and method for detecting deficiency of railway fasteners on basis of laser and vision
  • System and method for detecting deficiency of railway fasteners on basis of laser and vision
  • System and method for detecting deficiency of railway fasteners on basis of laser and vision

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Embodiment 1

[0036] This embodiment provides a high-speed detection system for railway fasteners, the composition principle is as follows figure 1As shown, the detection system is mainly divided into three parts: laser positioning system 1, control center 2 and visual recognition system 4, the three components are located inside the detector 3, and the detector 3 is placed under the car body, facing the fastener 6 directly above the area. The laser positioning system 1 and the visual recognition system 4 are arranged staggered forward and backward along the direction of train running, the laser positioning system 1 is in front, and the visual recognition system 4 is behind, and the distance between them is constant. During the running of the train, when the detector 3 reaches the top of the area where the fastener 6 is located, the laser positioning system 1 automatically detects and locates the position of the fastener 6, and sends a synchronization signal to trigger the visual recognitio...

Embodiment 2

[0046] This embodiment provides a high-speed detection method for missing railway fasteners, and the implementation process is as follows:

[0047] Under the control of the control center 2, the laser positioning system 1 turns on the semiconductor laser 8, and the visual recognition system 4 turns on the illumination light source 15;

[0048] a) The laser positioning system 1 continuously collects the height information of the area where the fastener 6 is located. When it reaches the location of the fastener 6, the photoelectric array 11 generates a corresponding electrical signal due to the change in the height of the fastener 6, which is generated after passing through the photoelectric processing circuit 12. The synchronization signal is sent directly to the visual recognition system 4;

[0049] b) After the visual recognition system 4 receives the synchronization signal from the laser positioning system 1, it directly triggers the action of the high-speed industrial camer...

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Abstract

The invention discloses a system and a method for detecting deficiency of railway fasteners on the basis of laser and vision. The system comprises a laser positioning system, a vision identification system and a control center which are all arranged in a detector below a train body and rightly align to the upper side of the areas where the railway fasteners are located. The laser positioning system and the vision identification system are disposed front to back in a staggered manner along the running direction of the train, and the distance between the laser positioning system and the vision identification system is kept constant. The laser positioning system detects and positions the fasteners, sends out synchronous signals and triggers the vision identification system to work. The laser positioning system completes triangulation ranging measurement by utilizing a one-dimension array formed by high-speed semi-conductor photoelectric tubes to substitute for a linear array CCD (charge coupled device) in a common laser triangulation ranging sensor. By the aid of the system and the method for detecting deficiency of the railway fasteners on the basis of laser and vision, contradiction between detection accuracy and high running speed of the train is overcome effectively, and high-speed detection and identification for the railway fasteners are realized.

Description

technical field [0001] The invention relates to equipment in the field of railway infrastructure detection, in particular to a high-speed detection system and method for missing railway fasteners based on laser and vision. Background technique [0002] As a major project related to the national economy and the people's livelihood, the safety and maintenance of railway is very important. With the increase of railway mileage and the increase of train speed, the demand for monitoring the status of railway infrastructure has risen rapidly. Fasteners are one of the most critical facilities in railway infrastructure, and the absence of fasteners will have a decisive impact on traffic safety. Traditional manual inspection and maintenance can no longer meet the requirements, so various track inspection equipment came into being. At present, the detection methods of railway fasteners are mainly divided into the following three types: [0003] The first is manual inspection: railwa...

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Application Information

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IPC IPC(8): B61K9/08G01S5/16
Inventor 赵辉陶卫王卫东任盛伟刘满华雷华明刘伟文杨金峰张海波张永杰王梦雪吴芳
Owner SHANGHAI JIAO TONG UNIV
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