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Method and device for detecting gas

A technology for detecting gases and gases, which is applied in the direction of measuring devices, instruments, and material analysis through electromagnetic means, and can solve the problem of low accuracy of target gases

Active Publication Date: 2019-03-05
广东中誉科诚检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of low accuracy of target gas detection in the related art, the embodiment of the present invention provides a method and equipment for detecting gas

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  • Method and device for detecting gas

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Embodiment Construction

[0097] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0098] For ease of understanding, before describing the embodiments of the present invention in detail, the application scenarios involved in the embodiments of the present invention are firstly introduced.

[0099]When the target gas exists in the air, it may affect the user's health and even threaten the user's life safety. Therefore, if the device can detect the presence of the target gas in the air in real time, it can remind the user to take protective measures to avoid inhaling the target gas. At present, when there is a target gas in the air, the output voltage of the sensor in the device will rise rapidly, and after the target gas dissipates, the output voltage of the sensor will take a long time to drop to the original state, a...

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Abstract

The invention discloses a method and a device for detecting gas, and belongs to the technical field of gas detection. The method includes the steps: performing repeatedly sampling on output voltage ofa sensor to obtain N voltage values; determining at least one group of voltage values capable of reflecting existence of target gas from the N voltage values; determining concentration of the targetgas based on at least one group of voltage values, and detecting the target gas. The sensor comprises a semi-conduct gas-sensitive element, N is a positive integer larger than 1, and the target gas isgas affecting a resistance value of the semi-conduct gas-sensitive element. According to the method, the output voltage of the sensor is analyzed and compared, the concentration of the target gas canbe determined, real conditions of the target gas is reflected, and the detection accuracy of the target gas is improved.

Description

technical field [0001] The invention relates to the technical field of gas detection, in particular to a method and equipment for detecting gas. Background technique [0002] When there are target gases such as smog, carbon monoxide, methane, propane, formaldehyde, etc. in the air, it may affect the health of the user, and even threaten the life of the user. Therefore, the target gas in the air can be detected, and when detected When the target gas exists in the air, the user is reminded to take protective measures to avoid inhaling the target gas. [0003] In the related art, when the concentration of the target gas needs to be measured, the tester samples the air in a designated area, carries the sampled gas back to the laboratory, and measures the concentration of the target gas in the sampled gas in the laboratory. [0004] However, in the process of carrying the sampled gas back to the laboratory, or during the measurement in the laboratory, it is easily affected by th...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 不公告发明人
Owner 广东中誉科诚检测技术有限公司