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

A system and method for measuring and calculating gas response sensitivity in non-oxygen environment

A gas response and sensitivity technology, applied in the field of gas sensitivity measurement and calculation systems, can solve the problem of inseparable from test equipment, and achieve the effect of making up for the lack of response characteristics and improving aging

Inactive Publication Date: 2017-01-11
DALIAN NATIONALITIES UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the development process of gas sensors, it is necessary to study the gas response characteristics of the sensors in different environments and working conditions, measure the pros and cons of the sensors, and find out the best working conditions of the sensors. This is inseparable from good testing equipment.

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
  • A system and method for measuring and calculating gas response sensitivity in non-oxygen environment
  • A system and method for measuring and calculating gas response sensitivity in non-oxygen environment
  • A system and method for measuring and calculating gas response sensitivity in non-oxygen environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] A system for measuring and calculating gas response sensitivity in a non-oxygen environment, including: a non-oxygen environment, a gas chamber, a signal acquisition and transmission system, and a host computer;

[0052] The air chamber is a non-oxygen environment;

[0053] The signal acquisition and transmission system includes

[0054] A voltage divider circuit, the voltage divider circuit is a VOC gas sensor and a voltage divider resistor R L Composed in series, used to output the output voltage V in the air after the VOC gas sensor is desorbed air and the output voltage V in the measured gas when the VOC gas sensor is adsorbed gas ;

[0055] The A / D conversion module is connected with the voltage divider circuit, and is used to convert the V outputted by the voltage divider circuit air and V gas The voltage analog signal is converted into a voltage digital signal;

[0056] The microprocessor is connected with the A / D conversion module for A / D conversion, and the...

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 a measuring system and a measuring method of the gas response sensitivity in an oxygen-free environment. The measuring system comprises the oxygen-free environment, a gas chamber, a VOC (Volatile Organic Compound) gas sensor, a signal acquisition and transmission system and an upper computer, wherein the gas chamber is in the oxygen-free environment. The measuring method comprises the steps of (S1) obtaining a gas chamber in a vacuum environment; (S2) connecting the VOC gas sensor with a voltage dividing resistor in series, so as to form a voltage dividing circuit; (S3) distributing gas; (S4) measuring output voltage of the voltage dividing resistor, calculating to obtain voltage in measured gas when the VOC gas sensor is adsorbed, and selecting an appropriate voltage dividing resistor; (S5) desorbing the VOC gas sensor, measuring the output voltage of the voltage dividing resistor, and calculating to obtain voltage in air after the VOC gas sensor is desorbed; and (S6) calculating to obtain the gas response sensitivity S. By using the measuring system and the measuring method, the response characteristic of the VOC gas sensor in to-be-measured gas in the oxygen-free environment can be obtained.

Description

technical field [0001] The invention relates to a gas sensitivity measurement system and method, in particular to a gas response sensitivity measurement system and method in a non-oxygen environment. Background technique [0002] At present, in the development process of gas sensors, it is necessary to study the gas response characteristics of the sensors under different environmental and working conditions, measure the advantages and disadvantages of the sensors, and find out the best working conditions of the sensors. This is inseparable from good testing equipment. Generally, when a detectable gas is present, the higher the concentration of the gas, the higher the conductivity of the sensor. This change in conductivity is converted into an output signal corresponding to the gas concentration. The characteristics of VOC gas sensors in aerobic environments have been widely studied. However, in industrial practical applications, gas detection often needs to be carried out i...

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 Patents(China)
IPC IPC(8): G01N27/00
Inventor 孙炎辉杜海英宋鹏钱瑞陈诗尧
Owner DALIAN NATIONALITIES UNIVERSITY
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