High-speed detection system and detection method for tunnel defects

Abstract

The present invention proposes a high-speed detection system and method for tunnel defects, which includes a main control unit, a linear laser, an area array CCD camera, an image compression unit, a displacement sensor, a synchronous controller, an image storage unit, a storage module, and a correction module and inertial navigators. The invention designs a special-purpose measuring locomotive as a mobile monitoring platform, which is especially suitable for subway tunnel monitoring, and can effectively and quickly measure the space structure of tunnels such as subways; use the actual measured data to compare with the actual real distance, perform error analysis, and adjust parameter settings, which is very large The accuracy of the measurement is improved to a certain extent; the inertial navigator corrects the XYZ axial vibration of the mobile monitoring platform to avoid the measurement error introduced by the 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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