Ultramicro-gas concentration detection system

A gas concentration detection and ultra-trace technology, which is applied in the field of optical detection, can solve the problems of inability to achieve effective travel and limited number of reflections, and achieve the effect of increasing the shuttle travel and meeting the detection requirements

Active Publication Date: 2017-01-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the figure that this method is limited by the size of the spherical mirror, and its reflection times are limited. When measuring trace gases, it still cannot achieve an effective stroke.

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
  • Ultramicro-gas concentration detection system
  • Ultramicro-gas concentration detection system
  • Ultramicro-gas concentration detection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] like image 3 As shown, an ultra-trace gas concentration detection system includes a light source and its coupling optical path 41, an absorption pool, an interferometer 37 and an infrared detector 39;

[0028] like Image 6 As shown, the absorption pool includes a tubular shell 25 sealed at both ends, and a reflection assembly arranged inside the tubular shell 25;

[0029] One of the end faces of the tubular housing 25 is provided with a light incident window 29 and a light exit window 31, and the light incident window 29 and the light exit window 31 are all provided with windows made of infrared wave-transmitting materials; The outside of the window 29 is set opposite to the light source 41, the outside of the light exit window 31 is set opposite to the light entrance of the interferometer 37, and the light exit of the interferometer 37 is set opposite to ...

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 belongs to the technical field of optical detection and particularly relates to an ultramicro-gas concentration detection system. The system comprises a light source, a coupling optical path of the light source, an absorbing pond, an interferometer and an infrared detector. The absorbing pond comprises a tubular shell with the two ends sealed, and a reflection assembly arranged in the tubular shell. A right-angle mirror is arranged near the edge of a main mirror, when reflection light deviates from the main mirror, a reflection point on the main mirror side deviates by means of the right-angle mirror to form a new reflection path, and accordingly the reflection stroke is doubled. Thus, the shuttling stroke of infrared light beams is greatly increased, and detection requirements of ultramicro-gas are met.

Description

technical field [0001] The invention belongs to the technical field of optical detection, in particular to an ultra-trace gas concentration detection system. Background technique [0002] In the prior art, a spectrometer is often used to detect the gas concentration. The principle is that when the infrared beam passes through the gas to be measured, the gas will absorb the infrared signal. According to the Lambert-Beer law, the absorbance of gas molecules is proportional to the absorption path, the concentration of gas molecules and the absorption coefficient of gas molecules. Different gas molecules have different gas molecule absorption characteristics. Therefore, the concentration of absorbed gas molecules can be quantitatively retrieved by performing spectral analysis on the absorbance spectrum after gas absorption. However, when the gas concentration is too low, the absorbance of the gas molecules is weak, and the absorption spectrum is not obvious. At this time, the ...

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): G01N21/3504
CPCG01N21/3504
Inventor 李相贤童晶晶李胜王亚萍石建国陈军高闽光张玉钧刘文清
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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