High-speed detection system and method of tunnel defects

Abstract

The invention provides a high-speed detection system and method of tunnel defects. The system comprises a master control unit, a linear laser, an area array charge coupled device (CCD) camera, an image compression unit, a displacement sensor, a synchronous controller, an image storage unit, a storage module, a correction module and an inertial navigator. A special measurement locomotive serves as a mobile monitoring platform for the design and is particularly suitable for subway tunnel monitoring, and subway and other tunnel space structures can be effectively, rapidly and dynamically measured; the actually measured data is compared with actual real distance, errors are analyzed, the parameter setting is adjusted, and the measurement accuracy is greatly improved; moreover, the XYZ axial vibration of the mobile monitoring platform is subjected to error correction through the inertial navigator, and a measurement error is prevented from being introduced into mobile measurement.

Description

technical field [0001] The invention relates to a high-speed detection system and detection method for tunnel defects, which are used for detecting deformation and cracks in tunnels such as subways. Background technique [0002] With the continuous advancement of computer technology and the continuous improvement of people's production and living needs, solid 3D modeling has received more and more attention and research. 3D modeling technology can be applied to operation simulation, equipment data visualization, data space analysis, etc. , such as geographic information system (3D-GIS). In the field of reverse engineering, sample digitization technology has a wide demand for non-contact digital measuring instruments, and digital measurement methods are divided into contact and non-contact. It can be seen that the non-contact laser ranging method also has very important research significance for reverse engineering. Nowadays, the construction of railways and highways and th...

AI Technical Summary

Problems solved by technology

The structured light source adopts a point-by-point measurement method to obtain a spiral-shaped image, and then fits it into a three-dimensional image, so there are many blind spots and large errors

In addition, this case reduces the measurement error caused by vehicle vibration by fixing the position of the light source and high-speed camera, which cannot effectively reduce the measurement error caused by vehicle vibration when the detection vehicle is moving at high speed

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