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Displacement detection method for moving device in tunnel

A mobile device and detection method technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems that affect the safety of vehicles and increase the difficulty of displacement measurement of mobile platforms, and achieve the effect of monitoring rail settlement

Inactive Publication Date: 2015-01-07
樊晓莉
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Problems solved by technology

In addition, the settlement of the tunnel rail on the one hand affects the safety of the vehicle operation, on the other hand it also increases the difficulty of the displacement measurement of the mobile platform

Method used

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  • Displacement detection method for moving device in tunnel
  • Displacement detection method for moving device in tunnel
  • Displacement detection method for moving device in tunnel

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0029] refer to Figure 4 , the displacement sensor can be a distance measuring wheel. Generally, the wheel is regarded as moving at a constant speed. Due to the existence of slipping and S-travel, the actual running speed of the car body changes, and the displacement of the car body is generally smaller than the displacement measured by the displacement sensor, such as Figure 5 . In practical applications, the mobile device needs to capture tunnel images and calibrate the shooting position, so it is necessary to correct the travel speed and displacement measured by the displacement sensor to the actual speed and displacement of the car body, that is, according to the slippage and S travel degree of each position The displacement data measured by the displacement sensor sho...

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Abstract

The invention provides a displacement detection method for a moving device in a tunnel. The displacement detection method effectively corrects displacement of the moving device, and provides more accurate displacement data for obtaining tunnel images through the moving device. The tunnel is divided into a plurality of given sections, infrared geminate transistors are utilized for outputting displacement sensor distance measurement reset signals, and therefore the problem of continuous accumulation of errors caused by long-distance displacement measurement can be effectively solved; an image algorithm is utilized for detecting joint positions of pipe pieces, carrying out measurement many times, and carrying out error analysis, by analyzing a large number of data, a probability distribution model of the displacement measurement errors caused by slipping of a wheel track and S-shaped lines can be obtained, the error expectation is estimated, the total errors are distributed, and the measurement errors of each section are reduced.

Description

technical field [0001] The invention relates to a displacement detection method of a mobile device in a tunnel, which can be used to measure the traveling displacement of a mobile device such as a tunnel car. Background technique [0002] In recent years, relevant units and scholars have proposed an automatic collection system for tunnel surface information. This system mainly uses optical imaging technology to install camera equipment on a mobile platform to capture high-definition images of subway tunnels and record the location of the images. If digital image processing and computer vision technology are used to intelligently detect and analyze subway tunnel images, intelligent information monitoring and management of subway tunnels can be realized, which is of great significance to the safety and maintenance of subway operations. It is very difficult to capture images of the tunnel surface while moving at high speed on the subway tunnel. During the high-speed advancemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02
Inventor 樊晓莉樊晓东惠艳萍孟俊华唐文平刘家宾冯欣冯宾田明
Owner 樊晓莉
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