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

High-sensitivity FBG high-temperature sensor and working and manufacturing method thereof

A high-temperature sensor, high-sensitivity technology, used in instruments, thermometers, scientific instruments, etc., can solve the problems of excessive sensor function and size, low reliability, low sensitivity, etc., to eliminate nonlinear wavelength drift, small size, The effect of high temperature measurement sensitivity

Pending Publication Date: 2020-03-17
XIANGTAN UNIV +4
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the existing FBG temperature sensor technology is relatively mature, but in the field of high temperature, it still has defects such as low sensitivity, low reliability, and low precision.
Especially in high-tech fields such as aerospace, traditional sensors have been unable to meet the needs of the industry due to non-functional deficiencies such as function and size, so it is urgent to develop a high-sensitivity sensor

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
  • High-sensitivity FBG high-temperature sensor and working and manufacturing method thereof
  • High-sensitivity FBG high-temperature sensor and working and manufacturing method thereof
  • High-sensitivity FBG high-temperature sensor and working and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 1 , a high-sensitivity FBG high-temperature sensor, the sensor includes a sensor fixing support 1, a fixing screw, a thermal bimetallic core layer 301, a thermal bimetallic fiber layer (302, 303), a thermal bimetallic shell layer 304, a bare optical fiber, and a thermal insulation Insulation layer5.

[0073] After the optical fiber and the PI solution are cured, together with two thermal bimetallic sheets, they are used as a thermal bimetallic optical fiber layer, and a thermal bimetallic sheath layer 304 is glued on the outside. The second sensitive FBG used for temperature compensation is located on the passive deformation side of the thermal bimetallic core layer, and the temperature measuring FBG is located on the active deformation side of the thermal bimetallic core layer.

[0074] The core area is mainly the thermal bimetal part. The innermost one is the thermal bimetallic core layer 301, the second outer layer is the thermal bimetallic optical f...

Embodiment 2

[0076] A manufacturing method of a high-precision FBG high-temperature sensor includes fixing the FBG in a tube furnace, closing the tube furnace, inserting high-temperature cotton at both ends, and completing the annealing process.

Embodiment 3

[0078] Repeat Example 2, except that the high temperature causes thermal deflection in the thermal bimetallic region, and the first sensitive FBG for temperature measurement on the active deformation side of the thermal bimetallic core layer can identify this bending tension.

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-sensitivity FBG high-temperature sensor and a working and manufacturing method thereof. The sensor comprises two channels with different functions, wherein one channel serves as a temperature compensation channel of the sensor, and the other channel serves as an indirect temperature measurement channel of the sensor. Each of the two channels comprises an FBG and has the same packaging structure. The sensor has the characteristics of small size, high high-temperature sensitivity and the like and can be connected in series. The sensor is especially suitable for aerospace, hot well oil fields and other fields related to high-temperature sensing.

Description

technical field [0001] The invention relates to the field of high-temperature monitoring equipment, in particular to a high-sensitivity FBG high-temperature sensor and its working and manufacturing methods. Background technique [0002] Optical fiber sensor is a sensor that converts the state of the measured object into a measurable optical signal. Since the birth of optical fiber sensor, it has been widely used in many traditional sensing fields because of its advantages of anti-electromagnetic interference, intrinsic safety, small size, light weight and easy embedding into materials. [0003] As a new place for national science and technology to compete, the aerospace field is the best embodiment of the country's comprehensive strength in science and technology. With the implementation of the national "three-deep" strategy of deep ground, deep space, and deep sea, deep space has become the common development direction of various countries in the aerospace field. However, ...

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): G01K11/32G01K11/3206
CPCG01K11/3206
Inventor 杨才千李帅杨国玉刘莲杨宁范丽唐人杰张旭辉许福
Owner XIANGTAN UNIV
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