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Detection device for sleeper bolts

A detection device and bolt technology, which is applied to measurement devices, optical devices, instruments, etc., can solve the problems of inability to collect bolt profiles, cumbersome calibration process, easy to block laser lines, etc., to ensure the real-time performance and robustness of the system. , the effect of improving the detection speed

Active Publication Date: 2019-09-13
ZHUZHOU TIMES ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the object of the present invention is to provide a sleeper bolt detection device to solve the problem that the existing sleeper bolt detection device not only has a complex structure, high cost, and cumbersome calibration process, but also has a height exceeding the bolt due to the large angle between the camera and the laser. The background objects can easily block the laser line, so the bolt profile cannot be collected, resulting in missed detection. At the same time, there is a technical problem of mileage accumulation error in the positioning of the forward direction by using the line scan image collection method.

Method used

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  • Detection device for sleeper bolts
  • Detection device for sleeper bolts
  • Detection device for sleeper bolts

Examples

Experimental program
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Effect test

Embodiment 1

[0062] as attached figure 1 As shown, an embodiment of the sleeper bolt detection device of the present invention specifically includes:

[0063] The collection module 1 is triggered to obtain the position to be collected of the sleeper bolt image. The trigger acquisition module 1 is mainly composed of a position sensor, a logic circuit, etc., and can obtain position information with different precisions through configuration, and transmit reference information such as multiple trigger signals and trigger indexes at the same time.

[0064] The image acquisition module 2 acquires the plane image data of the sleeper bolts 5 according to the position to be acquired. The image acquisition module 2 further includes a light source 30 and a camera 40 , and the image acquisition module 2 acquires planar image data of the sleeper bolts 5 according to the trigger pulse sent by the trigger acquisition module 1 . When the current position of the image acquisition module 2 is greater tha...

Embodiment 2

[0088] as attached Figure 5 And attached Figure 6 As shown, an embodiment of a sleeper bolt detection method based on the device described in Embodiment 1, specifically comprises the following steps:

[0089] A) Obtain the position to be collected of the sleeper bolt image; first, the device is initialized, and the position to be collected of the first frame of the sleeper bolt image is the assignment when the sleeper bolt detection device 10 performs system initialization, when the current position of the image acquisition reaches the first frame of sleeper Collect a frame of image when the position of the bolt image is to be collected, and record the width W, height H of the collected image plane, and the current shooting position S 0 ;

[0090] As a preferred embodiment of the present invention, if the sleeper bolts are detected in the first frame of sleeper bolt images collected, it is judged that the sleeper bolt image acquisition position is the position of the sleep...

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Abstract

The invention discloses a detection device for sleeper bolts. The detection device comprises a trigger collection module, an image collection module, an image processing module and a data processing module, wherein the trigger collection module is used for obtaining the to-be-collected positions of sleeper bolt images; the image collection module is used for obtaining plane image data of the sleeper bolts according to the to-be-collected positions; the image processing module is used for obtaining shape description from the plane image data of the sleeper bolts, recognizing a bolt area according to the shape description, carrying out circle fitting on the bolt area, and extracting the coordinates of the center of a circle; and the data processing module is used for calculating central offsets of the sleeper bolts and the to-be-collected position of a next frame of sleeper bolt image according to the coordinates of the center of a circle. The detection device can solve the technical problems that an existing detection device for sleeper bolts is complex in structure, relatively high in cost and tedious in calibration process, and due to the fact that a larger angle exists between acamera and laser, laser rays are extremely easily shielded by background objects with the heights over the bolts, so that bolt profiles cannot be collected and then leak detection is caused, and simultaneously certain mileage accumulative error exists for positioning in an advancing direction in a line scanning image collection way.

Description

technical field [0001] The invention relates to the technical field of visual image detection, in particular to a sleeper bolt position detection device applied in the field of rail transit. Background technique [0002] The position detection of sleeper bolts is an important part of railway line maintenance operations. It is mainly used to obtain the offset Y of the sleeper bolts relative to the working device along the track advancing direction, the offset X of the vertical track direction, and the height offset. Z. The position information of the sleeper bolts can be used to guide the rail-changing operation of the rail-changing car, the oiling operation of the sleeper bolt oiling trolley, the automatic tightening operation of the sleeper bolts, and the automatic tamping operation and other automated operations. [0003] At present, the detection methods of sleeper bolts mainly include manual visual inspection, contact switch or metal sensor detection, 3D point cloud det...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 邱新华王文昆刘兴平关伟薛双纲曹辉季育文张磊聂肃
Owner ZHUZHOU TIMES ELECTRONICS TECH CO LTD
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