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

Optical fiber gas sensor

A technology of gas sensor and optical fiber, which is applied in the field of microstructure optical fiber gas sensor, can solve the problems of long response time and attenuation, and achieve the effect of shortening gas diffusion time and response time

Inactive Publication Date: 2005-08-03
SHANXI UNIV
View PDF0 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the advantages of absorption spectrum optical fiber gas sensor, but this structure has an attenuation effect on loss measurement, and the pores in the cladding are too small, it takes a while for the gas to diffuse into the pores, so the response time is longer

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 gas sensor
  • Optical fiber gas sensor
  • Optical fiber gas sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0029] An embodiment of the present invention: as image 3 A fiber optic gas sensor shown includes a light source 1 connected by a common solid-core fiber, a coupler 2, a gas absorption cell 3, a comparison fiber 4, photodetectors 5, 6, and a signal acquisition and processing system 7. The optical fiber 8 in the gas absorption cell 3 and the comparison optical fiber 4 are Bragg hollow-core fibers, of course, photonic crystal hollow-core fibers can also be used. The connection relationship is as follows: light source 1 is connected to the input of coupler 2, one output of coupler 2 is connected to gas absorption cell 3, gas absorption cell 3 is connected to photodetector 5, and the other output of coupler 2 is connected to contrast fiber 4, and the contrast The optical fiber 4 is connected to the photodetector 6 again, and the outputs of the photodetectors 5 and 6 are connected to the signal acquisition and processing system 7 .

[0030] Wherein the structure of the gas absorp...

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 optical fiber gas sensor includes common solid fiber connected light source, coupler, gas absorbing pond, reference fiber and optoelectronic detectors, as well as signal acquiring and processing system, with the fiber in the gas absorbing pond and the reference fiber being micro structure hollow fibers. The present invention has amplification effect in loss measurement, and has the advantages of high sensitivity, simple structure, short response time, use safety and convenience, simultaneous measurement of several kinds of gas, etc.

Description

Technical field: [0001] The invention relates to the field of gas detection by optical means, and in particular belongs to a microstructure optical fiber gas sensor capable of measuring gas types and concentrations. Background technique: [0002] The detection of gas types and concentrations has important applications in production, life and scientific research, such as the detection of methane gas used for explosion protection in coal mines, the detection of automobile exhaust pollution, the detection of harmful gases in interior decoration, and the types of gases in laboratory research and concentration detection. Therefore, it is of practical significance to develop a fiber optic gas sensor with high sensitivity, simple structure, and safe and convenient use. [0003] The detection of gas type and concentration can be divided into: optical type, semiconductor type, solid electrolyte type, contact combustion type, electrochemical type, etc. according to the detection prin...

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): G01N21/01G01N21/31
Inventor 周国生贾清薛文瑞贾锁堂尹王宝马维光
Owner SHANXI 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