Unlock instant, AI-driven research and patent intelligence for your innovation.

Detection method and device for looseness of rail fastener

A technology of track fasteners and detection devices, which is applied in the directions of measurement devices, transportation and packaging, and railway car body components, can solve the problems of high cost, easy missed inspection, missing fasteners, etc., and achieve the effect of accurate results.

Pending Publication Date: 2020-07-24
CRCC HIGH TECH EQUIP CORP LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the detection of fasteners in the industry is mostly due to defects such as missing fasteners and broken springs. The detection of loose fasteners is mainly based on the method of manual inspection. This method is low in efficiency, high in cost, and easy to miss.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detection method and device for looseness of rail fastener
  • Detection method and device for looseness of rail fastener
  • Detection method and device for looseness of rail fastener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The method for detecting loose rail fasteners described in this embodiment uses a high-speed industrial camera to take real-time pictures of the vehicle as it travels, and the captured images are transmitted to the data processor through the data transmission line, and the data processor uses deep learning algorithms to process the images Analysis, processing Analysis includes: comparing the processed image with the stored standard image, and the comparison result is output in the form of a report. If the fastener is loose, it will be calculated based on the collected train speed and the number of frames of the image. The exact position of the abnormal fastener is obtained; the detection method specifically includes the following steps:

[0038] 1) Set the frame number and motion speed of the high-speed industrial camera according to the detection requirements;

[0039] 2) The high-speed industrial camera simultaneously shoots and images the fastener, and transmits the ...

Embodiment 2

[0057] In Example 1 and Figures 1 to 2 Basically, in specific implementation, a train is equipped with at least two detection devices for loose rail fasteners, and each detection device for loose rail fasteners is at least equipped with two high-speed industrial cameras 10 and two sets of high-speed industrial cameras 10 at the same time. The light source compensation device for the angle of view corresponds to the fasteners on both sides of the same track respectively, and the camera 10 is oriented in the same direction as the locomotive. The installation height of the camera 10 and the horizontal distance from the fastener can be optimally determined according to the focal length of the selected camera 10 and the captured images. The viewing angle of the camera 10 forms an angle of 30° to 60° with the rail surface.

[0058] With reference to embodiment 1, the detection method and device described in this embodiment are adopted to realize the automatic detection of rail fas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a detection method and device for looseness of a rail fastener. The detection method comprises the following steps: carrying out real-time shooting by a high-speed industrialcamera along with the advancing of a vehicle; transmitting shot images to a data processor through a data transmission line, and processing and analyzing the image by the data processor by adopting adeep learning algorithm, wherein the processing analysis comprises the following steps: comparing the processed image with a stored standard image, outputting a comparison result in the form of a report, and if a fastener is loosened, performing calculation according to the acquired train speed and the frame number of the image to obtain the accurate position of an abnormal fastener. According tothe rail fastener looseness detection method and device provided by the invention, looseness detection can be effectively carried out on the track fastener, and meanwhile, abnormities such as missingand bounce-stop breakage of the fastener can be detected.

Description

technical field [0001] The invention relates to the technical field of railway machinery design and manufacture, in particular to a method and device for detecting loose rail fasteners. Background technique [0002] In the prior art, the Chinese invention patent application with the publication number CN104129404A discloses a method and device for high-speed dynamic real-time detection of rail fastener looseness. machine; determine the target to be detected; the industrial computer divides and cuts the image, extracts the fastener image, and performs image preprocessing; obtains the fastener image spectrum; combines the real-time obtained fastener image spectrum with the intact fastener image stored in the industrial computer Compare the spectrum to identify the defect; if there is a defect, the industrial computer will send a warning that the fastener is loose to the display, and combine the GPS positioning information to give the location of the fault point; record the det...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N21/01B61K9/08
CPCG01N21/8851G01N21/01B61K9/08G01N2021/8887G01N2021/0112
Inventor 杨阳张宝明张世璞
Owner CRCC HIGH TECH EQUIP CORP LTD