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Mining NDIR gas sensor and concentration quantitative analysis temperature compensation method

A gas sensor and mine-used technology, which is applied to the analysis of materials, material analysis through optical means, instruments, etc., can solve the problems of inaccurate detection results and other problems, and achieve the goal of ensuring accuracy, eliminating errors, eliminating hardware fluctuations and system drift Effect

Active Publication Date: 2021-08-13
CCTEG SHENYANG RES INST
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Problems solved by technology

[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

Method used

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  • Mining NDIR gas sensor and concentration quantitative analysis temperature compensation method
  • Mining NDIR gas sensor and concentration quantitative analysis temperature compensation method
  • Mining NDIR gas sensor and concentration quantitative analysis temperature compensation method

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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 a photodetector to be tested 8 and a reference photodetector 10 are respectively arranged at corresponding positions on the rear side of the photofilter to be tested 7 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 connecte...

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Abstract

The invention discloses a mining 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, a gas outlet and a gas inlet. The infrared modulation light source is placed at one end in the gas pool, and the gas outlet and the gas inlet are formed in the upper portion of the gas pool. A to-be-detected light filter and a reference light filter are arranged at the other end in the gas pool, and a to-be-detected light detector and a reference light detector are respectively arranged at the corresponding positions of the rear sides of the to-be-detected light filter and the reference light filter. The invention also provides a concentration quantitative analysis temperature compensation method of the mining NDIR gas sensor. According to the mining NDIR gas sensor, the influence of hardware fluctuation and system drift on gas concentration quantitative analysis is eliminated, meanwhile, the problem that the detection result is inaccurate due to the influence of temperature in the gas concentration detection process is solved through a concentration quantitative analysis temperature compensation method, and the accuracy of the gas concentration detection value is ensured.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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
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