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Tunnel deformation online monitoring system based on image analysis and application of system

An image analysis and monitoring system technology, applied in image analysis, tunneling, image enhancement, etc., can solve the problems of poor monitoring progress and high implementation cost, and achieve the effect of simple on-site implementation and easy retrospective analysis

Inactive Publication Date: 2012-08-01
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current online tunnel deformation monitoring system generally has defects such as high implementation cost and poor monitoring progress.

Method used

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  • Tunnel deformation online monitoring system based on image analysis and application of system
  • Tunnel deformation online monitoring system based on image analysis and application of system
  • Tunnel deformation online monitoring system based on image analysis and application of system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] An online tunnel deformation monitoring system based on image analysis, including identification points, a network camera, a central control computer and a transmission network. The layout of the identification points ensures that the installation position of the network camera is directly facing the transmission network. Network camera and central control computer.

[0033] Such as figure 2 As shown, the identification points are composed of 3 rows and 3 columns of 2cm×2cm squares arranged continuously; the color arrangement of the identification points in each row from top to bottom is black and white, black and white, and black and white. Three marking points are placed on the vault and the left and right arch feet respectively, on the same vertical elevation.

[0034] The installation position of the network camera is perpendicular to the installation elevation of the marking point and is provided with an LED white light fill light. The resolution of the image taken by...

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Abstract

The invention relates to a tunnel deformation online monitoring system based on image analysis and application of the system. The system comprises an identification point, a network camera, a central control computer and a transmission network. The application of the system comprises the following steps of: 1) arranging the identification point; 2) periodically controlling the network camera to carry out zooming photography by the central control computer; 3) transmitting photos to the central control computer by the network camera; 4) performing adaptive filter transformation on the photos by the central control computer; 5) performing gray threshold value transformation by the central control computer; 6) performing image edge detection by the central control computer to acquire the identification point; 7) calculating arch crown sinking displacement and arch springing convergence displacement of the identification point; and 8) judging whether the arch crown sinking displacement and the arch springing convergence displacement are smaller than set threshold values, if so, returning to the step 2), otherwise, giving an alarm. Compared with the prior art, the invention has the advantages that the system is easy to implement and can realize online monitoring and automatic alarm.

Description

Technical field [0001] The invention relates to a related technology for online monitoring of tunnel deformation, in particular to an online monitoring system for tunnel deformation based on image analysis and its application. Background technique [0002] At present, the domestic tunnel deformation measurement mostly uses manual on-site measurement methods. On the one hand, the efficiency is relatively low. On the other hand, human factors have greater influence and measurement errors, and online monitoring and automatic warning cannot be realized. [0003] With the continuous improvement of computer performance, the enhancement of computer image processing performance and the emergence of high-resolution digital products, and the birth of powerful image processing calculation software, the development and application of deformation measurement based on digital photography in the field of geotechnical engineering become possible. Deformation measurement based on digital photograp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG06K9/00G01B11/16E21D9/00G01M5/0091G01C15/04G01M5/0025G01M11/081G06T7/0004G06T2207/30132G06T2207/30208E21F17/18G06V20/52H04N7/183
Inventor 朱合华刘学增桑运龙
Owner TONGJI UNIV
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