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

Dynamic BOTDA-based multi-core cycle series-connection fiber-shaped sensor

A multi-core fiber and sensor technology, applied in instruments, optical devices, measuring devices, etc., can solve problems such as inability to real-time sensing, and achieve the effect of improving stability and reliability

Active Publication Date: 2019-09-17
GUILIN UNIV OF ELECTRONIC TECH
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN103438927B uses multi-core optical fiber as a distributed sensor device, but it only uses multiple cores of multi-core optical fiber as multiple transmission channels, which plays the role of multiple measurements, and cannot be used for real-time sensing of shapes

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
  • Dynamic BOTDA-based multi-core cycle series-connection fiber-shaped sensor
  • Dynamic BOTDA-based multi-core cycle series-connection fiber-shaped sensor
  • Dynamic BOTDA-based multi-core cycle series-connection fiber-shaped sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] In order to obtain 3D shape sensing, distributed bending and torsional sensing are required simultaneously. On multi-core fiber, this goal can be achieved by using Brillouin Optical Time Domain Analysis Technology (BOTDA). For this reason, the present invention provides a multi-core circulating series-connected optical fiber shape sensor used in a dynamic BOTDA system. The sensor uses multi-core optical fiber. This kind of multi-core fiber can have many forms: (1) a multi-core fiber with multiple cores arranged symmetrically on the circumference, and the number of cores N≥3, such as figure 1 (a) The three-core optical fiber shown; (2) a multi-core optical fiber with an intermediate core and multiple cores distributed around the circumference of the intermediate core, the number of cores N≥4, such as figure 1 Four-core optical fiber and seven-core optical fiber shown in (b) and (c); (3) spiral multi-core optical fiber in which peripheral cores are helically distributed...

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 dynamic BOTDA-based multi-core cycle series-connection fiber-shaped sensor. The fiber-shaped sensor comprises a multi-core fiber, a single-mode fiber and multi-core fiber Fan-in device, a single-mode fiber and multi-core fiber Fan-out device and a plurality of single-mode fibers, wherein the plurality of single-mode fibers are connected between the Fan-in device and the Fan-out device. By a mode of sequentially and circularly connecting a plurality of fiber cores of a multi-core fiber in series, the function of expanding the plurality of fiber cores to form a one-dimensional topological optical path is achieved. The fiber-shaped sensor can used for a shape sensing device of a dynamic BOTDA sensing system, can be widely used for monitoring health of an intelligent structure and also can be used for a stressed skin structure of a robot or an airplane wing, and the shape change thereof is detected in real time.

Description

[0001] (1) Technical field [0002] The present invention relates to a dynamic BOTDA-based multi-core cycle-connected optical fiber shape sensor, which can be used for health monitoring of intelligent structures, and can also be used for skin structures of robots or aircraft wings to detect their shape changes in real time and belong to distributed Type optical fiber deformation sensing technology field. [0003] (2) Background technology [0004] Optical fiber deformation sensing is a distributed sensing technology, which uses the backscattering signal generated by the local strain of the optical fiber to detect the bending and twisting of the optical fiber, and then processes the information to reconstruct the spatial deformation of the optical fiber. This technology has a wide range of applications in the fields of medical care, energy, national defense, aerospace, structural safety monitoring, and other smart structures. In the field of aerospace, fiber optic smart structu...

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): G01B11/24G01B11/16
CPCG01B11/16G01B11/24
Inventor 苑立波杨世泰徐荣辉
Owner GUILIN UNIV OF ELECTRONIC TECH
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