CO2 gas concentration monitoring device and method with automatic temperature and air pressure compensation

A gas concentration and automatic compensation technology, which is applied to measuring devices, material analysis through optical means, instruments, etc., can solve the problems of inability to carry out accurate monitoring in high altitude areas, application limitations of gas concentration monitoring technology, and small temperature compensation range. To achieve the effect of enhancing the environmental adaptability of the device, improving the precision, high precision and reliability

Active Publication Date: 2015-03-25
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the common infrared CO 2 The gas concentration monitoring technology has problems such as a small temperature compensation range and no pressure compensation. It cannot accurately monitor high-altitude areas, making infrared CO 2 The application of gas concentration monitoring technology in high altitude areas is limited

Method used

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  • CO2 gas concentration monitoring device and method with automatic temperature and air pressure compensation
  • CO2 gas concentration monitoring device and method with automatic temperature and air pressure compensation
  • CO2 gas concentration monitoring device and method with automatic temperature and air pressure compensation

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] The structure of this embodiment is as figure 1 As shown, the inner hollow skeleton 19 forms an air chamber 10, on which an air outlet 15 and an air inlet 16 are arranged, the left end of the air chamber 10 is equipped with an infrared light source 1, and a condenser lens 2 is arranged before the infrared light source 1, and the right end of the air chamber 10 is equipped with Reflector 5, reflector 5 is fixed by reflector holder 20, measuring filter 9 and reference filter 8 are arranged in front of dual-channel infrared detector 7, the front end of measuring filter 9 and reference filter 8 A conical light collector 6 is provided, and a temperature sensor 4 is arranged on the side of the dual-channel infrared detector 7 to monitor the temperature of the dual-channel infrared detector in real time, and an air-inducing pipe 14 is arranged ...

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Abstract

The invention discloses a CO2 gas concentration monitoring device and method with the automatic temperature and air pressure compensation. The CO2 gas concentration can be accurately detected in a relatively wide temperature range and a relatively wide air pressure range, and the device and the method are applied to monitoring the CO2 gas concentration in a low-temperature low-pressure environment. The CO2 gas concentration is monitored by adopting a dual-wavelength infrared monitoring principle and a suction structure, and the device has the advantages of adaptation to a low-temperature low-pressure environment, high precision, high reliability and the like. The interference caused by factors such as light source instability is eliminated by adopting a dual-channel infrared detector, the absorption length of infrared light is increased by adopting a reflector, the environment suitability of the device is enhanced by adopting a heating element and a heat preservation material, the receiving light intensity is enhanced and the automatic temperature and air pressure compensation and correction is performed by adopting a conical optical collector, and the CO2 gas monitoring precision is effectively improved.

Description

technical field [0001] The invention belongs to CO 2 In the field of gas concentration monitoring, it specifically involves the use of dual-wavelength infrared monitoring principles and suction structure, with temperature compensation and pressure automatic compensation, and high-precision CO with digital signal output. 2 Gas concentration monitoring method and device. Background technique [0002] There is a certain concentration of CO in the daily environment 2 gas, but if CO 2 Excessive gas concentration will pose a threat to human life, so in some special occasions the CO in the environment 2 The real-time monitoring of gas concentration is getting more and more attention. [0003] Infrared gas concentration monitoring technology is the current CO 2 One of the hotspots of gas concentration monitoring methods, infrared gas concentration monitoring technology has the advantages of high sensitivity, high precision, good stability, good selectivity, high reliability, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
Inventor 赵建华方丽丽
Owner UNIV OF SCI & TECH OF CHINA
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