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Image processing-based rail profile detecting device and method

An image processing and detection device technology, applied in measurement devices, optical devices, instruments, etc., can solve problems such as affecting driving safety, increasing grinding workload, and deteriorating rail quality, so as to improve measurement accuracy, improve accuracy, reduce The effect of small cumulative errors

Active Publication Date: 2017-06-13
WUHAN SPREADING TECH CO LTD
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Problems solved by technology

[0003] During the rail welding operation of the rail welding factory, if the dimensions of the two ends of the weld are inconsistent, the quality of the rail will decrease, the workload of grinding will increase, and the driving safety will be affected.

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  • Image processing-based rail profile detecting device and method
  • Image processing-based rail profile detecting device and method

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited.

[0046] The invention provides a rail profile detection device and method based on image processing, utilizing figure 1 The device shown is realized. The device uses the triangular ranging principle of the laser sensor to collect profile data. After calibration, the profile size data of the rail 8 section is obtained, and the data is used to measure the profile parameters of the rail.

[0047] The device includes four sensors, a sensor bracket 5, a base 6, a track conveying roller 7 and a rail 8, wherein: the four sensors are laser profile sensors, which are respectively the first sensor 1, the second sensor 2, the third sensor 3, the Four sensors 4, all adopt the same type of linear laser ranging sensor (such as Gocator2350 sensor), they are respectively installed at the four inner corners of the sensor bracket ...

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Abstract

The invention relates to an image processing-based rail profile detecting device and method. The device comprises four sensors, a sensor holder (5), a base (6), a track conveying roller (7) and a rail (8), wherein the four sensors are respectively arranged at four inner corners of the sensor holder, and the Z-axes of coordinate systems of the sensors intersect at the center of the sensor holder fixedly arranged on the base; the track conveying roller is fixedly arranged on the base and is used for supporting and conveying the rail. The method comprises the following steps: carrying out coordinate transformation on images acquired by the four sensors, unifying to the same world coordinate system, searching feature points in the four images by taking one image as a datum, converting the other three images to the datum according to the feature points to obtain a rail section profile, calculating the geometric dimension of the section profile and comparing with the railway standard to judge. The image processing-based rail profile detecting device and method provided by the invention have the advantages of remarkably improving the production efficiency and improving the measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of railway rail detection, in particular to a device and method for measuring rail profile parameters based on image processing. Background technique [0002] With the continuous improvement of train speed and density, the requirements for the stability, comfort and safety of train operation have been continuously improved, and higher requirements have been put forward for the influencing factors in the welding technology of rails. The seamless welding technology has become the mainstream. In the welding operation, the geometric dimension of the rail section profile is an important factor affecting the straightness of the rail. [0003] During the rail welding operation of the rail welding factory, if the dimensions of the two ends of the weld are inconsistent, the quality of the rail will be reduced, the workload of grinding will be increased, and the driving safety will be affected. [0004] In the curren...

Claims

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Application Information

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IPC IPC(8): G01B11/245
CPCG01B11/245
Inventor 李存荣谢雯张琪崔耕王博文
Owner WUHAN SPREADING TECH CO LTD
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