Laser reflection sheet achieving method suitable for positioning and deformation analysis in channel

A deformation analysis and laser reflection technology, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of dim, uneven, and segment cracks in the observation environment.

Active Publication Date: 2018-03-23
TONGJI UNIV
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Problems solved by technology

Segment staggering will affect the clearance of the tunnel, bring hidden dangers of waterproofing, and may also cause cracking and damage to the segment structure
[0010] (2) Leaking water
[0012] (3) Segment cracks
[0014] (4) Deterioration of lining material
These two types of convergence have similar but di

Method used

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  • Laser reflection sheet achieving method suitable for positioning and deformation analysis in channel
  • Laser reflection sheet achieving method suitable for positioning and deformation analysis in channel
  • Laser reflection sheet achieving method suitable for positioning and deformation analysis in channel

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Embodiment Construction

[0080] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0081] Such as figure 1 and combine Figure 2-Figure 6 As shown, a laser reflector implementation method suitable for positioning and deformation analysis in tunnels, the method steps include: (1) material analysis; (2) tunnel deformation reflector processing; (3) point cloud data processing; (4) ) reflective sheet coding scanning; (5) experimental verification; the point cloud data processing further includes effective point emission identification, point cloud plane fitting and projection, point coordinate conversion and feature code scanning identification, and reflective sheet coding scanning includes binary hash codes , the binary hash code includes forward compilation of the binary hash code and reverse identification of the binary hash code....

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Abstract

The invention relates to the field of subway channel monitoring, in particular to a laser reflection sheet achieving method suitable for positioning and deformation analysis in a channel. The method comprises steps of material analysis; channel deformation analysis reflection sheet processing; point cloud data processing; reflection sheet coding scanning; and experiment verification, wherein the reflection sheet coding scanning comprises a binary system hash code and the binary system hash code comprises forward-direction compiling of the binary system hash code and inverse-direction recognition of the binary system hash code. The beneficial effects are that by using a dot matrix to scan the binary system hash code, through total point cloud data reflection intensity, effective reflectionpoint recognition is scanned and screened, so point cloud plane fitting and plane projection are effectively reflected; and through point cloud coordinate conversion, certain processing is performed on the point cloud data, and through a specific coding rule, transcoding is performed on codes included in the point cloud information, so information like the city where a settlement observation pointis located, the channel number and the point number is obtained, and automatic recognition and reverse-direction designing of channel deformation reflection sheets are achieved.

Description

technical field [0001] The invention relates to the field of subway tunnel monitoring, in particular to a method for realizing a laser reflection sheet suitable for positioning and deformation analysis in a tunnel. Background technique [0002] Since the middle of the 20th century, the process of urbanization in the world has gradually increased, the population of cities in the world has continued to rise, and the economy has developed rapidly. Accelerated urbanization has also brought about a surge in population and a substantial increase in the number of vehicles. The limitation of urban roads has brought about a series of problems such as population oversaturation, traffic congestion, and frequent accidents. Three-dimensional transportation has become the first choice for countries to solve the above-mentioned series of problems under the current situation. The traffic pattern of big cities has been transformed into a new traffic pattern where underground railways are t...

Claims

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Application Information

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IPC IPC(8): G01B11/16G01B11/00
Inventor 吴杭彬郭文镈于鹏飞刘豆
Owner TONGJI UNIV
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