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Gas concentration measuring device and method thereof

A gas concentration and measurement technology, which is applied in the direction of measuring devices, color/spectral characteristic measurement, material analysis through optical means, etc., can solve the problem of high manufacturing cost

Inactive Publication Date: 2010-12-15
RADIANT INNOVATION INC
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Problems solved by technology

[0007] The main purpose of the present invention is to provide a gas concentration measurement device and its method, which uses a single-channel infrared measurement structure with a simple structure to cooperate with the measured voltage value and reference voltage value to correct the high gas measurement. Accuracy, and then solve the problem of conventional complex dual-channel infrared measurement structure and high manufacturing cost

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  • Gas concentration measuring device and method thereof
  • Gas concentration measuring device and method thereof
  • Gas concentration measuring device and method thereof

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Embodiment Construction

[0038] The gas concentration measuring device according to the embodiments of the present invention will be described below with reference to the related drawings. For the sake of easy understanding, the same components in the following embodiments are described with the same symbols.

[0039] see figure 2 , which is a schematic diagram of the gas concentration measuring device of the present invention. Using the principle of virtual dual channels to measure the concentration of carbon dioxide, the gas concentration measurement device includes a single-channel infrared gas detection module 21 to measure the voltage signal of a carbon dioxide gas to be measured, and the single-channel infrared gas detection module 21 includes an infrared emitter 211, a gas channel 212 and an infrared detector 213. The infrared detector 213 is a thermopile infrared detector. One end of an infrared controller 22 is connected to an infrared emitter 211, and the other end is connected to a proces...

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Abstract

The invention discloses a gas concentration measuring device and a method thereof, which is applied to measuring the concentration of carbon dioxide; a single-channel infrared gas detecting module is used for detecting a voltage signal of gas to be measured; the voltage signal can be converted into voltage value by a digital to analog convertor; and a processing module is used for correcting the voltage value and reference voltage value for generating the concentration valve of the gas to be measured. If the reference voltage value is initial reference voltage value, the carbon dioxide concentration value in atmospheric environment can be taken as reference data, and the processing module is used for correcting voltage excursion of the gas to be measured. Therefore, the measurement accuracy is improved.

Description

technical field [0001] The present invention relates to a gas concentration measurement device and its method, in particular to the technical field of measuring carbon dioxide gas concentration by using virtual dual-channel infrared rays and correcting the voltage offset problem during measurement. Background technique [0002] According to the research results of the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), if the indoor carbon dioxide concentration exceeds 1,000ppm, ventilation should be performed, and statistics also show that 90% of buildings are higher than this value . Because human breathing produces carbon dioxide, if the human body inhales too much carbon dioxide when moving in a certain limited space, it will slow down the brain activity, slow down the response, and easily enter a state of drowsiness and lack of energy. Therefore, a gas detector such as a carbon dioxide concentration is usually used to measure the gas con...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N21/3504
Inventor 曹琦臧永刚顾丁洁
Owner RADIANT INNOVATION INC
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