Unlock instant, AI-driven research and patent intelligence for your innovation.

Tunnel surface defect positioning method and positioning system

A positioning method and positioning system technology, applied in the direction of optical testing flaws/defects, etc., can solve problems such as measurement errors, different positions, and drift

Inactive Publication Date: 2016-05-04
BEIJING UNIV OF TECH +1
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to defects such as measurement errors and drifts in the mileage of the inspection vehicle, although the mileage of the inspection vehicle is the same, the positions of the corresponding tunnels are different, so that the defects on the tunnel surface cannot be accurately located

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tunnel surface defect positioning method and positioning system
  • Tunnel surface defect positioning method and positioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Hereinafter, embodiments of the present invention are described with reference to the drawings. The following detailed description and accompanying drawings serve to illustrate the principles of the present invention. The present invention is not limited to the described preferred embodiments, but the scope of the present invention is defined by the claims.

[0021] figure 1 It is a flow chart showing the tunnel surface defect location method provided by the present invention. Such as figure 1 As shown, the present invention provides a tunnel surface defect location method, the location method includes the following steps:

[0022] Step 101: In the image acquisition area of ​​the tunnel surface, a plurality of mileposts for marking the position of the tunnel surface are set on the tunnel surface along the extension direction of the tunnel. In this step, the setting of the mileage piles provides a positioning reference for locating the defects on the tunnel surface, s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a tunnel surface defect positioning method and positioning system. The tunnel surface defect positioning method comprises the following steps that in an image collection region of the inner wall of a tunnel, a plurality of mileage piles used for marking the tunnel surface mileage are arranged on the surface of the tunnel in the tunnel extending direction; the image of the tunnel surface is collected in the tunnel extending direction, and the tunnel surface image collected in one continuous collection period includes the image of at least one mileage pile; on the basis of the collected tunnel surface image, the mileage piles and the defects in the tunnel surface image are recognized; the mileage pile closest to the defect is used as the basis for determining the position of the tunnel surface defect on the surface of the tunnel. The invention also discloses the tunnel surface defect positioning system.

Description

technical field [0001] The invention relates to tunnel surface defect location, in particular to a tunnel surface defect location method. The invention also relates to a tunnel surface defect localization system. Background technique [0002] With the development of modern science and technology, the detection of the surface quality of roads, railways and tunnels no longer depends on manual detection, but uses automatic detection equipment suitable for detecting the surface of continuous objects. Taking tunnel inspection as an example, a line-scan camera is installed on a tunnel surface inspection vehicle. When the inspection vehicle travels along the extension direction of the tunnel at a preset speed, the line-scan camera collects images of the tunnel surface through pulse control. [0003] The data processor identifies and locates defects on the tunnel surface based on the tunnel surface image collected by the line scan camera. In the prior art, when locating tunnel sur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88
CPCG01N21/88
Inventor 龚秋明杜修力殷丽君许成顺刘永强任云涛
Owner BEIJING UNIV OF TECH