A mine-used ndir gas sensor and its concentration quantitative analysis temperature compensation method
A technology of gas sensor and temperature compensation, which is applied to the analysis of materials, material analysis through optical means, instruments, etc., can solve the problems of inaccurate detection results, etc., to ensure accuracy, eliminate hardware fluctuations and system drift, and eliminate errors. Effect
Active Publication Date: 2022-02-08
CCTEG SHENYANG RES INST
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[0004] In order to overcome the deficiencies of the prior art, the present invention provides a mine-used NDIR gas sensor and a temperature compensation method for quantitative concentration analysis, which can solve the problem of inaccurate detection results caused by temperature effects in existing gas concentration detection
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Embodiment 1
[0053] see figure 1 , a mine-used NDIR gas sensor, comprising an infrared modulation light source 1, a microprocessor 2, an A / D analog-to-digital converter 3, a multi-channel converter 4, an amplifier 5, a gas pool 6, an air outlet 11, and an air inlet 12 The infrared modulation light source (providing blackbody radiation light 1 is placed on one end of the gas pool 6, an air outlet and an air inlet are provided on the top of the gas pool 6, and the other end of the gas pool 6 is provided with a light filter 7 to be measured and a reference light filter 9, and the photodetector 8 to be tested and the reference photodetector 10 are arranged respectively at the corresponding positions on the rear side of the photofilter 7 to be tested and the reference photofilter 9, and the infrared modulation light source 1 is respectively arranged on the The microprocessor 2, A / D analog-to-digital converter 3, multi-channel converter 4, and amplifier 5 outside the gas cell 6 are electrically ...
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The invention discloses a mine-used NDIR gas sensor, which comprises an infrared modulation light source, a microprocessor, an A / D analog-to-digital converter, a multi-channel converter, an amplifier, a gas pool, an air outlet, and an air inlet. The light source is placed at one end of the gas cell, an air outlet and an air inlet are provided on the upper part of the gas cell, and a light filter to be measured and a reference light filter are provided at the other end of the gas cell, and the light filter to be measured and the reference light filter are arranged A photodetector to be tested and a reference photodetector are respectively arranged at corresponding positions on the rear side of the reference light filter. The invention also provides a temperature compensation method for the concentration quantitative analysis of the mine-used NDIR gas sensor. The mining NDIR gas sensor of the present invention eliminates the influence of hardware fluctuations and system drift on the quantitative analysis of gas concentration, and at the same time, the temperature compensation method for quantitative concentration analysis of the present invention solves the problem of inaccurate detection results due to the influence of temperature in the process of gas concentration detection problem, to ensure the accuracy of the gas concentration detection value.
Description
technical field [0001] The invention relates to the technical field of NDIR gas sensing, in particular to a mine-used NDIR gas sensor and a temperature compensation method for quantitative concentration analysis. Background technique [0002] Gas concentration detection is widely used in mines, environmental protection, petroleum, chemical industry, metallurgy, gas and other dangerous places where flammable, explosive and toxic gases exist. Gas analyzer based on non-dispersive infrared (Non-Dispersive Infra-Red, hereinafter referred to as "NDIR") spectral sensor technology is a fast and accurate gas quantitative analysis technology, especially in coal mine gas detection, continuous pollutant monitoring (CEMS ) and motor vehicle exhaust detection applications are very common. However, the traditional NDIR analyzer is easily affected by the ambient temperature when detecting gas concentration, and it is difficult to eliminate the influence of hardware fluctuation and system d...
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IPC IPC(8): G01N21/3504G01N21/01
CPCG01N21/3504G01N21/01G01N2201/1211G01N2021/0112
Inventor 梁运涛田富超董浩喆秦玉金苏伟伟孙勇孟祥宁李杰郑忠宇
Owner CCTEG SHENYANG RES INST