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Ballastless track disease detection method and system based on vehicle-mounted acoustic sensing

A ballastless track and detection method technology, applied in measurement devices, scientific instruments, processing response signals of detection, etc., can solve problems such as expensive equipment, influence of detection effect cleanliness, etc., achieve low cost, save labor and time costs, Effects that are not limited by time

Pending Publication Date: 2021-09-28
TONGJI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods require expensive equipment, and the detection results are easily affected by ambient light and the cleanliness of the object surface

Method used

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  • Ballastless track disease detection method and system based on vehicle-mounted acoustic sensing
  • Ballastless track disease detection method and system based on vehicle-mounted acoustic sensing
  • Ballastless track disease detection method and system based on vehicle-mounted acoustic sensing

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Experimental program
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Effect test

Embodiment

[0047] Such as figure 1 As shown, a ballastless track defect detection method based on vehicle-mounted acoustic sensing, specifically includes the following steps:

[0048] S1, collect the original sound signal during the train operation;

[0049] S2. According to the original sound signal, the sound radiation signal of the ballastless track structure is enhanced;

[0050] S3, according to the enhanced sound radiation signal of the ballastless track structure, identify the corresponding track disease, and obtain the disease identification result of the ballastless track;

[0051] S4. According to the identification result of the disease of the ballastless track, determine the section of the line that needs to be maintained.

[0052] In step S2, the sound enhancement method based on deep learning is used to enhance the ballastless track structure-acoustic radiation signal.

[0053] Such as image 3 As shown, the sound enhancement method based on deep learning includes a neu...

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Abstract

The invention relates to a ballastless track disease detection method based on vehicle-mounted acoustic sensing. The ballastless track disease detection method specifically comprises the following steps of S1, collecting original sound signals in the train running process; S2, according to the original sound signal, enhancing a ballastless track structure sound radiation signal in the original sound signal; s3, according to the enhanced sound radiation signal of the ballastless track structure, identifying a corresponding track disease, and obtaining a disease identification result of the ballastless track; and S4, according to the disease identification result of the ballastless track, judging a line section needing to be maintained. Compared with the prior art, the method has the advantages of saving labor, equipment and time cost, improving the detection efficiency of the ballastless track and the like.

Description

technical field [0001] The invention relates to the field of rail transit infrastructure detection, in particular to a ballastless track defect detection method and system based on vehicle-mounted acoustic sensing. Background technique [0002] Due to its advantages in operation and maintenance, ballastless track has been widely used in high-speed railway lines. However, with the gradual increase of high-speed railway transportation density, continuous improvement of operating speed, and gradual increase of load class, the dynamic interaction between high-speed trains and line infrastructure is becoming more and more intense. In this case, the ballastless track often has diseases such as mortar layer separation, track slab void, track slab arch, track slab and base plate cracking. These diseases affect the running stability of the vehicle, and even threaten driving safety in serious cases. [0003] Common non-destructive testing methods such as ground penetrating radar, ul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/44G01N29/46
CPCG01N29/04G01N29/4481G01N29/4445G01N29/4454G01N29/46G01N2291/0289G01N2291/2623
Inventor 戴宝锐李奇
Owner TONGJI UNIV
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