Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for measuring geometric characteristics of tunnel appendages

A technology of geometric features and measurement methods, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of state invasion, low efficiency, high labor cost, etc., achieve high resolution, high data acquisition efficiency, and improve operation efficiency effect

Active Publication Date: 2019-05-24
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the special environment of the tunnel, while these appendages protect the safe operation of the subway, whether their own state violates the boundary is also a hidden danger. In the traditional method, it is necessary to regularly check the safety of all appendages in the tunnel through manual inspections. Or use an instrument to measure the change of its position, which is extremely inefficient and labor-intensive

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
  • Method for measuring geometric characteristics of tunnel appendages
  • Method for measuring geometric characteristics of tunnel appendages
  • Method for measuring geometric characteristics of tunnel appendages

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] According to the attached figure 1 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.

[0028] see figure 1 , a method for measuring geometric characteristics of tunnel appendages according to an embodiment of the present invention, comprising the steps of:

[0029] S1: Use a mobile laser scanning device to obtain laser point cloud data of a target tunnel. The laser point cloud data includes feature data sets of multiple scanning points; feature data sets include row and column number information (C, R) corresponding to the current scanning point, Three-dimensional coordinates (X, Y, Z) and laser intensity value (I).

[0030] S2: According to the row and column number information (C n , R n ) and the laser intensity value (I) projection generate a high-resolution tunnel plane image, and establish a coordinate formula corresponding to eac...

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 provides a method for measuring geometric characteristics of tunnel appendages. The method includes the following steps: S1, obtaining laser point cloud data by using a mobile laser scanning device; S2, generating a tunnel plane image according to the laser point cloud data and establishing coordinate formulas corresponding to points on the tunnel plane image; S3, measuring a plane coordinate of the target point on the tunnel plane image; S4, obtaining row and column number information of the target point according to the coordinate formula; S5, obtaining a three-dimensional coordinate of the target point according to the laser point cloud data of the target point; and S6, repeating the step S3-S5 to obtain three-dimensional coordinates of multiple required target points andcalculating the distance between any two of the target points according to the three-dimensional coordinates. The method for measuring the geometric characteristics of the tunnel appendages of the invention can quickly measure the position, size, distance and other characteristics of the tunnel appendages, and has the advantages of high measurement efficiency and labor cost saving.

Description

technical field [0001] The invention relates to the field of tunnel measurement, in particular to a method for measuring geometric characteristics of tunnel appendages. Background technique [0002] In order to ensure the safe operation of subway trains and monitor the safety of the tunnel, a large number of auxiliary facilities and monitoring equipment are installed inside the tunnel ring. Due to the special environment of the tunnel, while these appendages protect the safe operation of the subway, whether their own state violates the boundary is also a hidden danger. In the traditional method, it is necessary to regularly check the safety of all appendages in the tunnel through manual inspection. Or use an instrument to measure the change of its position, the efficiency is extremely low, and the labor cost is high. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a method for measuring the geo...

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): G01B11/00
Inventor 高志强郭春生程胜一刘蝶王令文许正文
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com