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

Distributed type optical fiber temperature measuring method

A distributed optical fiber and optical fiber technology, applied in thermometers, measuring devices, measuring heat, etc., can solve problems such as low accuracy and complicated application environments, and achieve the effects of reducing relative errors and improving accuracy and flexibility

Active Publication Date: 2013-08-21
SHENZHEN YINGTANG SOFTWARE TECH
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex application environment of the system, the accuracy of temperature measurement using conventional optical fiber temperature measurement methods is not high

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 type optical fiber temperature measuring method
  • Distributed type optical fiber temperature measuring method
  • Distributed type optical fiber temperature measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0027] figure 1 Shown is the flow of an embodiment of the distributed optical fiber temperature measurement method.

[0028] Based on the ratio of the intensity of anti-Stokes light and Stokes light in Raman scattering satisfies the following formula:

[0029] I Anti - Stokes I Stocks = ( v - v i v + v ...

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 discloses a distributed type optical fiber temperature measuring method which comprises the following steps: a, adopting a plurality of pre-measured light intensity ratios of an optical fiber and a plurality of pre-measured temperature data of the optical fiber, carrying out fitting through an orthogonal polynomial regression method, obtaining a fitting curve, establishing an orthogonal polynomial model, b, measuring light intensity data at a measured position of the optical fiber, calculating first temperature through the light intensity data based on the Raman scattering theoretical model, calculating second temperature through the orthogonal polynomial model, and confirming temperature of the measured position based on the first temperature and the second temperature. Compared with a regular optical fiber temperature measuring method, the distributed type optical fiber temperature measuring method can effectively improve accuracy of temperature measuring results.

Description

technical field [0001] The invention relates to optical fiber temperature measurement technology, in particular to a distributed optical fiber temperature measurement method. Background technique [0002] Temperature is one of the important parameters to determine the state of matter. Its measurement and control, especially in high temperature measurement, plays an extremely important role in aerospace, materials, energy, metallurgy and other fields. [0003] Distributed optical fiber temperature measurement is currently an emerging contact temperature measurement method, which has the advantages of small size, light weight, passive detection, anti-electromagnetic interference, flame-retardant and explosion-proof, and easy remote monitoring. [0004] Distributed optical fiber temperature measurement uses optical fiber as a sensing sensitive element and transmission signal medium to detect changes in temperature and strain at different positions along the optical fiber to ach...

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): G01K11/32G01K11/324
Inventor 古远东郑戈志李俊王铁山
Owner SHENZHEN YINGTANG SOFTWARE 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