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Detection method, system and device for simultaneously measuring concentrations of various gases

A detection method and technology for gas concentration, which are applied in measurement devices, color/spectral characteristic measurement, instruments, etc., can solve the problems of inaccurate gas concentration measurement and achieve the effect of accurate gas concentration value

Active Publication Date: 2022-05-10
华电智控(北京)技术有限公司
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Problems solved by technology

[0005] The present application provides a detection method, system and device for simultaneously measuring the concentration of multiple gases to solve the problem in the related art that multiple optical signals are received by the same detector and the optical signals are superimposed, resulting in inaccurate gas concentration measurement

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  • Detection method, system and device for simultaneously measuring concentrations of various gases
  • Detection method, system and device for simultaneously measuring concentrations of various gases
  • Detection method, system and device for simultaneously measuring concentrations of various gases

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Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0027] It should be noted that the terms "first" and "second" i...

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Abstract

The invention discloses a detection method, system and device for simultaneously measuring concentrations of various gases. The method comprises the following steps: controlling a plurality of lasers to alternately emit light beams in different time periods of the same time period to obtain a plurality of light beams to be measured; acquiring background light intensity signals in a time period measured after the plurality of light beams to be measured penetrate through the background space, and target light intensity signals in a time period measured after the plurality of light beams to be measured penetrate through the gas space to be measured; the background light intensity signals and the target light intensity signals in the time period are preprocessed according to time periods, and multiple segments of background light intensity signals and multiple segments of target light intensity signals are obtained; and calculating the concentration of one to-be-detected type of gas in the to-be-detected gas according to each section of target light intensity signal and the corresponding background light intensity signal to obtain the concentrations of various to-be-detected types of gas. According to the invention, the problem that the gas concentration measurement is inaccurate due to the fact that multiple paths of optical signals are received by the same detector and the optical signals are superposed in the prior art is solved.

Description

technical field [0001] The present application relates to the technical field of gas concentration measurement, in particular, to a detection method, system and device for simultaneously measuring the concentration of multiple gases. Background technique [0002] When measuring gas concentration, since the gas to be detected is usually a mixture of multiple types of gases, in order to detect the concentration of multiple gases at the same time, tunable semiconductor absorption spectroscopy technology is used in related technologies to detect multiple gases, specifically , because different gases in nature have corresponding different absorption peaks in the infrared band, tunable semiconductor absorption spectroscopy technology uses wavelength tuning to make the wavelength scanning intervals of multiple lasers contain the characteristic absorption peaks of the measured gas, respectively. In order to detect the concentration of various gases and the type of gas. [0003] How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/01
CPCG01N21/31G01N21/01
Inventor 姬红波李自丽姬二鹤王腾飞郭晓鹤
Owner 华电智控(北京)技术有限公司
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