Air pollutant detection device and detection method

Abstract

The invention belongs to the field of gas detection, and particularly relates to a gas detection device, in particular to an air pollutant detection device and an air pollutant detection method. The air pollutant detection device comprises a laser transmitting module, an incident light path, a detection module, an emergent light path, a laser receiving module, a control single-chip computer, a computer and a cloud server. Atmosphere to be detected is converted into atmosphere with standard room temperature and is detected in a drying manner under standard atmospheric pressure, so that by suchthe detection method, an error caused by different temperatures, humidity and pressures during infrared absorption detection is avoided, and a result is more accurate without correction; the calculated pollutant concentration in the standard state is converted into the concentration of pollutants in the atmosphere in the current state, and the pollutant concentration can be compared with cloud data.

Description

technical field [0001] The invention belongs to the field of gas detection, in particular to a gas detection device, in particular to an atmospheric pollutant detection device and a detection method. technical background [0002] Air pollutants refer to those substances that are released into the atmosphere due to human activities or natural processes and have harmful effects on people and the environment. In a dry atmosphere, the composition of constant gases is negligible. However, in a certain range of atmosphere, trace substances that were not originally appeared, and their quantity and duration may have adverse effects and harm on people, animals, plants, objects, and materials. When the concentration of pollutants in the atmosphere reaches a harmful level, and even destroys the conditions for the normal survival and development of the ecosystem and human beings, the phenomenon that causes harm to people or things is called air pollution. [0003] Air pollutants can b...

AI Technical Summary

Problems solved by technology

However, different gas chambers need to be replaced when detecting different gases, and it is difficult to detect multiple gases at the same time, and the gas absorption peak of a single component is generally affected by the actual gas, and there is an error in this calibration

[0008] The patent application with application number 2015106513566 designed an absorption cell with a long optical path. The absorption cell adopts a spiral structure, which reduces the volume of the absorption cell and improves the detection accuracy. However, the curved surface of the absorption cell is very difficult to process, and Its optical path is fixed, difficult to adjust, and cannot be adjusted for different concentrations of gases

[0009] In summary, the existing detection devices and detection methods are difficult to overcome the influence of temperature, humidity, and air pressure on the detection results, and a single detection device is difficult to apply to the detection of various gases. Single function, no intelligent technology, etc.

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