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

Self-regulating thermal-conducting gas sensor and gas detecting device

A gas sensor and gas detection technology, applied in the direction of material thermal development, material thermal conductivity, etc., can solve the problem of complex structure of thermal conductivity gas sensor

Pending Publication Date: 2019-07-09
GL TECH CO LTD
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a self-adjusting thermal conductivity gas sensor to solve the problem of complex structure of the current thermal conductivity gas sensor

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
  • Self-regulating thermal-conducting gas sensor and gas detecting device
  • Self-regulating thermal-conducting gas sensor and gas detecting device
  • Self-regulating thermal-conducting gas sensor and gas detecting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0023] Such as figure 1 It is an embodiment of a self-regulating thermal conductivity gas detection device, which includes a casing and a detection gas circuit in it, a signal processing module (such as a signal processing board), an air inlet pipeline and an air outlet pipeline. The gas outlet pipeline is connected to form the detection gas path, and also includes a self-regulating thermal conductivity gas sensor for detecting the gas in the detection gas path, ensuring that the sensitive element of the sensor (such as a thermistor) can contact the gas to be measured (such as a sensitive The element is set in the detection gas path or a chamber for placing the sensitive element communicated with the detection gas path), or ensure that the sensitive element touches the wall of the detection gas path to indirectly obtain the temperature of the gas to be measured; The gas inlet and the gas outlet, the gas inlet and the gas outlet are communicated through the detection gas path; ...

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 thermal-conducting gas sensor and a gas detecting device, and in particular to a self-regulating thermal-conducting gas sensor and a gas detecting device. The device comprises a shell, a signal processing module, a measuring sensor, an air intake pipeline and an air outlet pipeline, wherein the air intake pipeline is connected with the air outlet pipeline through the measuring sensor; the measuring sensor comprises a thermistor, specifically a two-stage operational amplifier circuit with a positive feedback system stability gain of 1; and the thermistor is connectedbetween two operational amplifiers, so that when the operational amplifiers are balanced, the resistance value of a temperature sensing module is a set value, and then when the measured gas causes thetemperature of a temperature sensor to change, the operational amplifier circuit automatically adjusts the resistance of the thermistor to a set value so as to avoid the temperature drift errors caused by the uncertainty of the working resistance. The device is simple in structure and low in cost and is capable of realizing a self-adjusting function for the working temperature and resistance value of the thermistor.

Description

technical field [0001] The invention relates to a heat conduction type gas sensor and a gas detection device, in particular to a self-regulating heat conduction type gas sensor and a gas detection device. Background technique [0002] In recent years, with the development of semiconductor technology, gas sensors based on thermal conductivity have become more and more widely used. The thermal conductivity gas sensor is a device for measuring gas concentration based on the difference in thermal conductivity of different gases. It can convert the information related to gas type and concentration into electrical signals, and has the following advantages: large detection range, good working stability, long service life, no problem of catalyst aging, high stability and reliability, It can detect almost all gases, and the detection of gas concentration can be realized under the condition of oxygen or no oxygen in the measured environment. These excellent characteristics are not a...

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): G01N25/20G01N25/18
CPCG01N25/20G01N25/18
Inventor 赵彤宇徐朝辉王爽王鹍周慧锋
Owner GL TECH CO LTD
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