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

Infrared gas analyzer with hollow fiber resonant cavity

A technology of gas analyzer and resonant cavity, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of large size and bulky gas chamber, and achieve the effect of increasing the length of the optical path, increasing the sensitivity, and reducing the space

Inactive Publication Date: 2006-12-13
HANGZHOU DIANZI UNIV
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need for a sufficient length of light propagation distance in the measurement, in the prior art, the gas chamber of the gas analyzer is large and heavy

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
  • Infrared gas analyzer with hollow fiber resonant cavity
  • Infrared gas analyzer with hollow fiber resonant cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Such as figure 1 As shown, one end of the hollow gas path fiber 104 is connected to the inlet fiber connection unit 103, and corresponds to the position of the reflector 101. The probe light transmitted from the gas path fiber 104 is reflected by the reflector 101 and then transmitted In the gas path optical fiber 104. The air inlet fiber optic connector 103 is hollow and provided with an air inlet 102 , through which the gas to be measured flows into the air inlet fiber optic connector 103 , and further flows into the air path optical fiber 104 .

[0012] The other end of the hollow gas path fiber 104 is connected to the outlet fiber optic connector 106 and corresponds to the position of the reflector 108. The detection light transmitted from the gas path fiber 104 is reflected by the reflector 108 and then enters the gas path fiber 104 middle. The gas outlet fiber optic connector 106 is hollow and provided with a gas outlet 107 through which the gas to be measured f...

Embodiment 2

[0016] Such as figure 2 As shown, the fiber grating 201 is connected to the intake fiber connector 203, and one end of the hollow gas path fiber 204 is also connected to the gas path fiber connector 203, and the position of the fiber grating 201 corresponds to the gas path fiber 204, and the gas path The probe light transmitted from the optical fiber 204 is reflected by the fiber grating 201 and then enters the air path optical fiber 204 . The air inlet fiber optic connector 203 is hollow and is provided with an air inlet 202 , through which the gas to be measured flows into the air inlet fiber optic connector 203 and further flows into the air path optical fiber 204 .

[0017] The other end of the hollow air path optical fiber 204 is connected to the air outlet optical fiber connector 206, and one end of the connecting optical fiber 207 is also connected to the air outlet optical fiber connector 206. The port position of the connecting optical fiber 207 corresponds to the po...

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 relates to an infrared gas concentration analyzer, which comprises a light emitting unit, a light receiving unit, a light input fiber, a light output fiber, a light coupler, a gas inlet fiber connector, a gas exit fiber connector, a central processing unit, a gas path fiber and a light reflecting device. The gas path fiber filed with testing gas forms a gas chamber which can improve length of the light path and reduce occupied space. The hollow gas path fiber and the light reflecting device form a fiber resonance cavity, in where the detecting light beam can transmit back and forth multiple times after being reflected by the light reflecting device and still transmit into the hollow gas path fiber which can improve the gas detection sensitivity.

Description

technical field [0001] The invention relates to a gas concentration detection device, in particular to an infrared gas concentration analyzer, which is mainly used to measure the concentration of certain or several molecules in the gas. Background technique [0002] Gas analyzers use the principle of absorption spectroscopy that light energy is absorbed by gas molecules at specific frequencies to measure the concentration of gases. The infrared gas analyzer consists of a light emitting unit, a gas chamber, a light receiving unit, a data processing unit and other auxiliary units. The light emitting unit includes various infrared light sources, and the infrared light emitted by it enters the gas chamber, is absorbed and attenuated by the gas in the gas chamber, and then irradiates the receiving unit. The receiving unit generally includes an infrared detector, which converts the variation of absorption and attenuation of infrared light into a variation of an electrical signal....

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): G01N21/25
Inventor 卢山鹰王健孙玲玲周磊
Owner HANGZHOU DIANZI 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