Geological radar-based railway tunnel internal disease detection method and device

A technology of geological radar and detection method, which is applied in the field of internal defect detection of railway tunnels based on geological radar, and in the field of internal defect detection devices of railway tunnels based on geological radar image data, can solve the problems of low detection efficiency, accuracy and quality, and achieve relief The effect of manual labor intensity, improved detection quality, and high detection efficiency

Pending Publication Date: 2020-08-25
安徽国钜工程机械科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problems of low detection efficiency, accuracy and quality in existing railway tunnel disease detection, the present invention provides a method and device for detecting internal diseases of railway tunnels based on geological radar

Method used

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  • Geological radar-based railway tunnel internal disease detection method and device
  • Geological radar-based railway tunnel internal disease detection method and device
  • Geological radar-based railway tunnel internal disease detection method and device

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Embodiment 1

[0072] see figure 1 , this embodiment provides a method for detecting internal defects of railway tunnels based on geological radar, which can be applied in tunnels such as high-speed rail tunnels, subway tunnels, and ordinary railway tunnels, and detects the defects of the tunnels. In this embodiment, the detection method is based on geological radar to detect tunnel defects, which can accurately detect inner lining defects and obtain radar images and mileage of the defects, thereby providing data support for tunnel maintenance. When it is found that there is indeed an internal disease in the radar image, the maintenance personnel can accurately determine the location of the disease through the mileage, so as to deal with this part of the tunnel. Wherein, the method for detecting internal defects of a railway tunnel includes the following steps, namely steps (1)-(8).

[0073] (1) Collect the radar image of the lining in the railway tunnel, and obtain the corresponding graysc...

Embodiment 2

[0117] This embodiment provides a method for detecting internal defects of railway tunnels based on geological radar, which adds the following steps on the basis of embodiment 1, namely step (11) and step (12).

[0118] (11) Upload the real-time data of the radar image and the mileage of the diseased area to a cloud platform. The cloud platform can be a tunnel maintenance monitoring platform, on which storage locations for each section of the railway tunnel are set, and the disease information will correspond to each section of the railway tunnel on the cloud platform, thereby generating a big data system for tunnel disease information. The big data system can accumulate tunnel inspection data, which can be checked in time through mobile phones, PCs and other devices when personnel need to check, making railway maintenance more convenient.

[0119] (12) Perform statistics on the disease amount of each section of the railway tunnel to obtain the cumulative amount of disease, an...

Embodiment 3

[0121] This embodiment provides a device for detecting internal defects of railway tunnels based on geological radar image data. The device applies the method for detecting internal defects of railway tunnels based on geological radars in Embodiment 1 or Embodiment 2. Wherein, the internal disease detection device of the railway tunnel includes a tunnel inspection vehicle, a coarse-precision segmentation module, a pre-selection module, a threshold segmentation module, a contrast enhancement module, a high-precision segmentation module, a disease area screening module and an output module.

[0122] The tunnel inspection vehicle includes data acquisition system, data processing system and auxiliary lighting system. The data acquisition system is used to collect radar images of the lining in the railway tunnel, the data processing system is used to obtain the corresponding grayscale profile, and the auxiliary lighting system is used to provide the data acquisition system with illu...

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Abstract

The invention discloses a geological radar-based railway tunnel internal disease detection method and a device thereof. The method comprises the following steps: acquiring a lining radar image in a railway tunnel; carrying out coarse precision segmentation on the grayscale profile map; calculating a gray variance of the radar segmentation image I; determining an adaptive threshold by maximizing the ratio of variances, and screening out a region of interest and a background region in a radar segmentation image I according to the adaptive threshold; expanding the contrast of the region of interest and the background region; performing high-precision segmentation on the grayscale profile map; determining a discrete grayscale image two-dimensional entropy, taking an area of which the grayscaleimage two-dimensional entropy is greater than a preset two-dimensional entropy as a target area, and finally screening out a target disease area where the target area is located; and outputting the radar image with the target disease area and the mileage of the disease area. According to the method, tunnel disease conditions can be detected and measured on a large scale, and the tunnel disease detection efficiency and precision can be improved.

Description

technical field [0001] The present invention relates to a railway tunnel internal disease detection method in the technical field of railway tunnel detection, in particular to a railway tunnel internal disease detection method based on geological radar, and also to a railway tunnel internal disease detection method based on geological radar image data using the method device. Background technique [0002] With the rapid development of tunnel construction in my country, my country's tunnels have now stepped out of the construction period and entered the "high maintenance" management period. The impact of tunnel diseases on tunnel operation safety has attracted more and more attention from relevant departments. Inspection and management are the focus of lining maintenance. In order to ensure that the tunnel will not affect the safe operation of the train, it is necessary to conduct regular safety inspections on the lining, and inspections and observations are required from tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/34G06T7/00G01V3/12G01V3/38
CPCG06T7/0002G01V3/12G01V3/38G06T2207/10044G06V10/25G06V10/267
Inventor 程腾谷先广段兴邦
Owner 安徽国钜工程机械科技有限公司
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