Unlock instant, AI-driven research and patent intelligence for your innovation.

Gas sensing method and device

A gas and gas concentration technology, which is applied in the direction of measuring devices, analyzing gas mixtures, and structural details of gas analyzers, can solve problems such as inability to sense inert gases

Active Publication Date: 2022-03-25
应美盛公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemistor-based gas sensors cannot sense noble gases such as carbon dioxide or nitrogen due to the reaction limitation of the metal-oxide-semiconductor (MOS) structure

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
  • Gas sensing method and device
  • Gas sensing method and device
  • Gas sensing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In at least some embodiments, the present disclosure recognizes and addresses the problem of detecting reactive as well as noble and / or other non-reactive gases. The disclosed gas sensors use thermal conductivity sensing methods in addition to chemi-resistor based sensing methods in order to sense a wider range of gases using a single gas sensing platform. The disclosed gas sensors combine chemi-resistor sensing and thermal conductivity sensing in the same device, thereby improving gas sensing species range while reducing the amount of gas sensor devices and / or other associated equipment.

[0020] When compared to conventional techniques, the gas sensor of the present disclosure can detect multiple gases using a single sensor device, with the attendant lower cost and complexity otherwise achieved by using multiple sensor devices. Furthermore, the gas sensors of the present disclosure can be configured to specifically utilize thermal conductivity sensing in the presence ...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The present application provides a system and method for detecting gases in an environment using chemical and thermal sensing. In one embodiment, a method includes exposing a chemistor embedded within a sensor pixel to an ambient gas; setting a heater embedded within the sensor pixel to a sensing temperature that is greater than room temperature ; measuring the resistance of the chemistor in response to setting the heater to sense a temperature; and in response to the difference between the resistance of the chemistor and a reference resistance being less than a threshold, heating the sensor embedded within the sensor pixel The sensor provides a fixed power input and measures the temperature of the sensor pixel relative to a reference temperature.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Nonprovisional Patent Application Serial No. 15 / 484,864, filed April 11, 2017, entitled "Gas Sensing Method and Apparatus," the entire contents of which are hereby incorporated by reference. Background technique [0003] Certain gas sensors utilize a physical or chemical change in a chemical sensing material (eg, a chemiresistive material) in the presence of a gas to determine the concentration of the gas in the surrounding environment. However, chemistor-based gas sensors cannot sense noble gases such as carbon dioxide or nitrogen due to the reaction limitation of the metal-oxide-semiconductor (MOS) structure. Therefore, it is desired to realize a gas sensor device capable of detecting more kinds of gases. Contents of the invention [0004] The following presents a simplified summary of one or more embodiments of the application in order to provide a basic understanding of 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 Patents(China)
IPC IPC(8): G01N27/12G01N27/18G01N33/00
CPCG01N27/123G01N27/128G01N27/18G01N33/004G01N33/0073G01N27/04
Inventor 刘方彼得·哈特韦尔马汀·林杨玉石
Owner 应美盛公司