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Single-path laser ranging tunnel deformation monitoring system and method

A technology of deformation monitoring and laser ranging, applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as insufficient data accuracy, inaccurate data collection, and attenuation of the ranging path of the laser rangefinder

Active Publication Date: 2021-07-06
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, during the use of the laser rangefinder, its distance measurement data will be affected by the environment, resulting in inaccurate data collection
For example, as the haze in the tunnel is heavy, the ranging path of the laser rangefinder will have serious attenuation, which will lead to insufficient accuracy of the collected data; and when the tunnel leaks, the ranging light of the laser rangefinder will refraction / reflection

Method used

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  • Single-path laser ranging tunnel deformation monitoring system and method

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Embodiment 1

[0030] Such as figure 1 As shown, a single-channel laser ranging tunnel deformation monitoring system includes an environment detection unit, a ranging unit, a processing unit and a storage unit.

[0031] The environmental detection unit includes a lower computer, a temperature sensor, a humidity sensor, a stress sensor and a communication unit. The ranging unit includes a second lower computer, a second communication unit and multiple single-channel laser scanners, and multiple single-channel laser scanners are installed on the inner wall of the tunnel or the bottom of the side of the tunnel at a preset distance. The processing unit and the storage unit are integrated in the server. In this embodiment, both the communication unit and the second communication unit are broadband communication units, and the server is a cloud server.

[0032] The processing unit is used to monitor the deformation according to the first frequency; the processing unit is also used to send the fi...

Embodiment 2

[0043] The difference from Embodiment 1 is that in this embodiment, the environment detection unit is also used to send stress data to the processing unit according to the second frequency, and the second frequency is less than the first frequency; the environment detection unit is also used to clear the stress data after sending the stress data Corresponding data; the processing unit is also used to analyze the tunnel cracking after receiving the stress data, and generate a suspected signal when the cracking analysis result is abnormal.

[0044] Since most of the tunnels will be deformed when cracking, on the basis of daily deformation monitoring according to the first frequency, even if the cracking frequency of the processing unit alone is less than the first frequency, it is enough to compare the cracking of the tunnel. good monitoring. However, the environmental detection unit clears the corresponding data after sending the stress data, which can reduce the demand on the ...

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Abstract

The invention belongs to the technical field of tunnel detection, and particularly relates to a single-path laser ranging tunnel deformation monitoring system and method. The system comprises an environment detection unit, a ranging unit, a processing unit and a storage unit; the processing unit is used for sending a first detection signal to the environment detection unit before deformation monitoring; the environment detection unit is used for detecting environment data in the tunnel after receiving the first detection signal; the processing unit is also used for analyzing and judging whether the environment data meets the ranging condition after receiving the environment data; if the ranging condition is met, the processing unit is also used for sending a second detection signal to the ranging unit; the ranging unit is used for performing tunnel distance measurement after receiving the second detection unit; and the processing unit is also used for performing three-dimensional modeling after receiving the ranging data, performing tunnel deformation analysis according to the currently established three-dimensional model and the stored three-dimensional model, and generating an abnormal signal when the analysis result is abnormal. The stability of tunnel deformation monitoring can be improved.

Description

technical field [0001] The invention belongs to the technical field of tunnel detection, in particular to a single-channel laser ranging tunnel deformation monitoring system and method. Background technique [0002] During tunnel construction, in order to ensure the stability of the tunnel and the safety of the construction, it is necessary to monitor the deformation of the constructed road section, so that when deformation occurs, the situation can be understood in time and countermeasures can be taken. [0003] In the prior art, it is mainly to use multiple single-channel laser range finders to collect ranging data in the tunnel, upload the ranging data to the processor for 3D modeling of the tunnel, and then the processor combines the 3D model with the historical 3D The models are compared in chronological order to determine deformations within the tunnel. In this way, the overall shape of the current tunnel can be known in time, and if there is abnormal deformation in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 赵智辉刘延保肖勇杨金虎张少华
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD