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Tunnel lining disease detection device based on infrared temperature field and gray level image

An infrared temperature, grayscale image technology, applied in the intersection of surveying and mapping science technology and instrument science, to achieve the effect of improving work efficiency, speed and synchronization accuracy

Inactive Publication Date: 2015-07-01
WUHAN WUDA ZOYON SCI & TECH
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  • Description
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AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to propose a tunnel lining defect detection device to overcome the technical bottleneck of rapid and accurate identification of existing lining cracks

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  • Tunnel lining disease detection device based on infrared temperature field and gray level image
  • Tunnel lining disease detection device based on infrared temperature field and gray level image
  • Tunnel lining disease detection device based on infrared temperature field and gray level image

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Embodiment Construction

[0038] Tunnel lining disease detection device based on infrared temperature field and grayscale image, using multi-sensor integration and data fusion principles and methods such as infrared thermal imager, area array camera, photoelectric encoder, GPS and inertial unit, on the vehicle platform with 1- While moving at a normal urban speed of 60 km / h, the infrared thermal imager installed on the platform obtains the infrared heat map inside the tunnel, and the grayscale image data of the tunnel lining is obtained by the area array camera and high-power LED lighting equipment , the ranging and angle data of the tunnel section are obtained by the laser scanner, the driving distance and running speed of the vehicle-mounted platform are obtained by the photoelectric encoder installed on the wheel, and the position and attitude data of the platform are obtained by the GPS and inertial unit installed on the platform , all the sensor data and synchronous data are transmitted to the comp...

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Abstract

The invention relates to a tunnel lining disease detection device based on an infrared temperature field and a gray level image. The tunnel lining disease detection device comprises a vehicle-mounted mobile platform, illumination equipment, a photoelectric encoder, a GPS (Global Position System) receiver, an inertia unit, a synchronous controller, an area-array camera, an infrared thermal imager, an acquisition server, a display control device and a power supply system; tunnel lining two-dimensional image data, infrared temperature field data and fracture surface deformation data are combined with positioning data of the GPS, the inertia unit and the photoelectric encoder to establish a tunnel model with gray level information, temperature information and fracture surface deformation; and tunnel lining cracks are analyzed, and the length, width and lining leakage water information of the cracks are automatically detected. For the tunnel lining disease detection device, the advantages of infrared temperature field detection and two-dimensional gray level image crack detection are combined so that the detection result is relatively reliable, the speed is rapid and the working efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the intersection field of surveying and mapping science technology and instrument science, and relates to a tunnel lining disease detection method involving infrared thermal imaging technology, image processing technology, laser scanning technology, mobile precision positioning technology and multi-sensor integration and synchronous control technology. The device can be widely used in the surveying and transportation fields such as road tunnel and railway tunnel detection. Background technique [0002] Tunnel lining diseases mainly include lining cracks, lining water leakage, lining hollowing and other diseases. Tunnel lining crack is one of the most important parameters to evaluate the quality of tunnel lining, and it is the early manifestation of most diseases, which directly affects the service life of tunnel and traffic safety. The traditional tunnel lining crack detection technology is based on manual visual inspection, w...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N25/72
Inventor 李清泉谢俊章丽萍曹民周瑾曲旋王新林
Owner WUHAN WUDA ZOYON SCI & TECH
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