Distributed fiber Bragg grating sensor long-distance automatic measuring, monitoring and early warning system

A technology of grating sensor and distributed optical fiber, which is applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of large investment and incomplete measurement content

Inactive Publication Date: 2015-07-29
宋启宽 +1
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General existing technology, large investment, or incomplete measurement content, often requires manual auxiliary measurement

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
  • Distributed fiber Bragg grating sensor long-distance automatic measuring, monitoring and early warning system
  • Distributed fiber Bragg grating sensor long-distance automatic measuring, monitoring and early warning system
  • Distributed fiber Bragg grating sensor long-distance automatic measuring, monitoring and early warning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The long-distance automatic measurement, monitoring and early warning system of the distributed fiber grating sensor of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, in the tunnel section, select a certain suitable position and arrange one or more measurement loops. Usually, one measurement loop is the space body measurement loop 1, which runs through the entire longitudinal direction of the tunnel and forms a closed measurement point network with the ground measurement points for Calculate the 3D coordinates of each survey point on the survey network. Two of the plane measurement circuits 2 are used to measure the angle displacement between the middle segment and the bottom segment of the tunnel. According to the rigid assumption of the segment, the convergence of all sections of the entire tunnel can be calculated. For the high-speed rail system, only a horizontal pla...

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 distributed fiber Bragg grating sensor long-distance automatic measuring, monitoring and early warning system, which is composed of one or more measuring circuits, wherein each measuring circuit is a space body measuring circuit formed by a space structural body formed by a sensor or a plane measuring circuit formed by arranging the sensors according to plane geometry; the sensors are mutually connected to form a statically indeterminate or determinate structural body or a planar statically indeterminate or determinate structure measuring plane, and nodes on the sensors are fixed on a measured body to form a measuring point group; and the measuring circuits are longitudinally arranged along a tunnel and form a closed measuring point network together with ground measuring points, thereby being used for measuring three-dimensional coordinates or two-dimensional coordinates of the measuring point group in the tunnel. According to the invention, the measuring point group of the measuring circuits forms the closed measuring network together with the ground measuring points, and the three-dimensional coordinates of each measuring point can be calculated through a multi-dimensional linear equation set matrix and known boundaries by means of the strain and the initial length among the measuring points in the measuring circuits.

Description

technical field [0001] The invention relates to a most economical high-precision automatic monitoring system for measurement, health detection and monitoring of long-distance structural facilities, in particular to a distributed optical fiber grating sensor long-distance automatic measurement, monitoring and early warning system. Background technique [0002] Distributed single-fiber or multi-fiber fiber grating sensor monitoring system is the most economical high-precision automatic measurement and monitoring system for health detection and monitoring of long-distance structural facilities. At present, no one at home and abroad has developed a truly practical automatic measurement and monitoring system for distributed fiber grating sensors. The problems, apart from the defects of the optical fiber itself, mainly exist in the practical use technology that is difficult to solve. [0003] First of all, there is an error in the positioning of the distributed fiber grating senso...

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
IPC IPC(8): G01B11/00G01B11/16
Inventor 宋启宽宋戈
Owner 宋启宽
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap