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A detection method, system and device for measuring a variety of gas concentrations at the same time

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

Active Publication Date: 2022-08-05
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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  • A detection method, system and device for measuring a variety of gas concentrations at the same time
  • A detection method, system and device for measuring a variety of gas concentrations at the same time
  • A detection method, system and device for measuring a variety of gas concentrations at the same time

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Embodiment Construction

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

[0026] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0027] It shou...

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Abstract

The present application discloses a detection method, system and device for simultaneously measuring the concentration of multiple gases. The method includes: controlling a plurality of lasers to alternately emit light beams at different time periods of the same time period to obtain a plurality of beams to be measured; acquiring background light intensity signals in a time period measured after the plurality of beams to be measured pass through a background space, and The target light intensity signal in the time period measured after passing through the gas space to be measured; the background light intensity signal and the target light intensity signal in the time period are preprocessed respectively according to the time period, and the multi-segment background light intensity signal and the multi-segment target light signal are obtained. Strong signal: Calculate the concentration of one type of gas to be measured in the gas to be measured according to each segment of the target light intensity signal and the corresponding background light intensity signal, and obtain the concentrations of multiple types of gases to be measured. The present application solves the problem of inaccurate gas concentration measurement caused by receiving multiple optical signals through the same detector in the related art, and the optical signals are superimposed.

Description

technical field [0001] The present application relates to the technical field of gas concentration measurement, and 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 the related art to detect multiple gases. , Since different gases in nature have corresponding different absorption peaks in the infrared light band, the tunable semiconductor absorption spectroscopy technology uses the method of wavelength tuning, so that the wavelength scanning interval of multiple lasers can respectively contain the characteristic absorption peaks of the gas to be measured. Thereby detecting the concentration of various gases and gas types. ...

Claims

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Application Information

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Patent Type & Authority Patents(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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