Optical fiber Fabry-Perot temperature sensing head based on PDMS arc-shaped reflecting surface and preparation method of optical fiber Fabry-Perot temperature sensing head

A reflective surface, sensor head technology, applied to thermometers with physical/chemical changes, using optical devices to transmit sensing components, thermometers, etc., can solve the problem of increasing deformation, not too high temperature sensitivity, poor interference contrast, etc. question

Pending Publication Date: 2021-04-27
TIANJIN UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing sensor heads, such as easy polymer shedding, poor interference contrast, and low temperature sensitivity, the present invention proposes a fiber-optic F-P temperature sensor head based on a PDMS curved reflective surface and its prepa

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
  • Optical fiber Fabry-Perot temperature sensing head based on PDMS arc-shaped reflecting surface and preparation method of optical fiber Fabry-Perot temperature sensing head
  • Optical fiber Fabry-Perot temperature sensing head based on PDMS arc-shaped reflecting surface and preparation method of optical fiber Fabry-Perot temperature sensing head
  • Optical fiber Fabry-Perot temperature sensing head based on PDMS arc-shaped reflecting surface and preparation method of optical fiber Fabry-Perot temperature sensing head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1As shown, it is a structural schematic diagram of a fiber-optic F-P temperature sensor head based on a PDMS arc reflective surface of the present invention. The structure of the sensing head is composed of single-mode optical fiber 1, microtube 2, and polymer PDMS 3. The sensing head 4 is mainly composed of a single-mode fiber 1, a microtube 2 and PDMS 3; a small section of microtube 2 is welded at the end of the single-mode fiber 1 to act as a container, and then the polymer is filled inside the microtube 2 by capillary phenomenon. The substance PDMS 3, and then using the preparation method proposed by the present invention, can form an arc-shaped reflective surface at the end of the PDMS solution. The polymer PDMS 3 filled in the microtube 2 constitutes the Fappel cavity of the sen...

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
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses an optical fiber Fabry-Perot temperature sensing head based on a PDMS arc-shaped reflecting surface and a preparation method of the optical fiber Fabry-Perot temperature sensing head. The sensing head comprises a single-mode optical fiber (1) and a microtube (2) arranged at the tail end of the single-mode optical fiber (1) in a welding manner; the microtube (2) is filled with PDMS (3); the microtube (2) filled with the polymer PDMS (3) forms a Fabry-Perot cavity; and an arc-shaped reflecting surface is formed at the tail end of the polymer PDMS (3). Compared with the prior art, the temperature sensitivity of the sensing head is improved by nearly 7.33 times compared with that of an unconstrained condition; the temperature sensitivity is controlled by controlling the length of the PDMS or the radian of the end face of the PDMS, and the smaller the length of the filled polymer PDMS is, the larger the radian of the arc-shaped end face is, and the higher the temperature sensitivity of the sensing head is; the sensing head has the advantages of being small in size, high in sensitivity, simple in structure, easy to manufacture and the like.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a novel high-sensitivity optical fiber F-P temperature sensing measurement system and measurement method based on a PDMS arc reflective surface. Background technique [0002] The rapid development of science and technology has brought a lot of convenience to production and life, but it has also brought serious environmental pollution, such as global warming; in addition, in power systems, detection systems, etc., temperature has always been an indispensable factor. Due to its own structure, the electrical temperature sensing head cannot be used in environments with strong corrosion or electromagnetic interference. In order to solve these problems, fiber optic temperature sensing heads based on different principles have been proposed in recent years, such as fiber grating type, Ma Zeng interference type, Fapling interference type, etc. Among them, the fiber-optic F...

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): G01K11/32G01D5/353
CPCG01D5/35312G01K11/32
Inventor 江俊峰张晓非王双刘铁根刘琨陈安琪
Owner TIANJIN UNIV
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