Portable device for remotely measuring atmospheric pollution components day and night on basis of natural celestial body light source

Abstract

The invention relates to a portable device for remotely measuring atmospheric pollution components day and night on the basis of a natural celestial body light source, which comprises a two-dimensional rotating platform system with a celestial body tracking function, a telescope system, a spectrometer and a computer. Received directly irradiated sunlight, moonlight, starlight and scattered sunlight are transmitted to the spectrometer by the telescope system through an optical fiber; spectral information acquired by the spectrometer is transmitted to the computer through AD (analog-to-digital) conversion; and the inversion is carried out by utilizing a related algorithm through the computer so as to obtain a vertical column concentration and vertical column distribution information of atmospheric trace gas. After the portable device for remotely measuring the atmospheric pollution components day and night is adopted, the day and night monitoring on the atmospheric conventional pollutant gas can be realized; and under the condition that any artificial light source is not required, a telescope is driven by a rotating platform to track a celestial body or carry out directional scanning so as to complete measuring a pollutant gas absorption spectrum. Compared with other optical methods, the portable device for remotely measuring the atmospheric pollution components day and night has the advantages that the portable device has simple system structure, is simple to assemble and disassemble and is convenient to carry; the day and night continuous measurement can be realized; and the vertical column concentration and the vertical column distribution information of the trace gas are obtained.

Description

technical field [0001] The invention belongs to the field of optical measurement methods, in particular to a day and night remote measurement device for air pollution components. Background technique [0002] The increasingly severe air pollution has made people pay more and more attention to the research on the temporal and spatial distribution of atmospheric trace gases, such as NO2, SO2 and other gases harmful to human body, which have become long-term monitoring items of environmental protection departments at all levels. HCOH, BrO, O3, NO2 and NO3 etc. have played an important role in atmospheric chemistry, and its concentration in the atmosphere has become the data that many research institutions hope to obtain. The current measurement technology is mainly the traditional chemical point measurement method and the optical telemetry method. The optical telemetry method is convenient to obtain the trace gas concentration of the entire atmosphere, and can monitor multiple ...

AI Technical Summary

Problems solved by technology

Among them, although the long optical path differential absorption spectroscopy system can monitor day and night, it needs to be equipped with a light source. The system is complex and heavy, and the transportation, installation, and disassembly are very complicated; the spectrophotometer and the diffuse sunlight differential absorption spectroscopy system can only be used for daytime measurement. Unable to monitor day and night

Images