Simulated telemetry system and method for infrared extinction and particle size of bio-aerosol

A bioaerosol and telemetry system technology, which is applied in the field of bioaerosol infrared extinction and particle size simulation telemetry system, can solve the problem of difficulty in comprehensively obtaining aerosol optical properties, inability to achieve simultaneous measurement of bioaerosols, and bioaerosol cloud clusters. problems such as low concentration, to achieve the effect of simple and fast measurement method, reduced implementation cost and simple structure

CN102507401AInactive Publication Date: 2012-06-20ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-06-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a simulated telemetry system and a simulated telemetry method for infrared extinction and particle size of bio-aerosol. According to the system, an aerosol generator fills sample powder in a sample cell, the sample powder is fully dispersed by a fan to form a bio-aerosol cloud, the size distribution of particles is measured by a spectrometer, black body radiation generated by a large surface source black body radiation source positioned at a light inlet of the sample cell is used for simulating ground feature long wave radiation, and the light is attenuated by the sample cell, and is received by a medium field receiving telescope and a Fourier conversion infrared spectrometer which are positioned at the light outlet of the sample cell, so that the bio-aerosol cloud is subjected to infrared extinction measurement and telemetry simulation under typical ground feature backgrounds. The simulated telemetry system has a simple structure, is used for telemetry simulation of the spectrum extinction and size distribution of the aerosol under the laboratory conditions, and verifies a bio-aerosol infrared telemetry technology; and the invention is easy to operate, reliable and stable, and can simultaneously measure multiple components and multiple optical parameters.
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Description

[0001] technical field

[0002] The invention relates to the field of environmental detection technology and analysis and optics, in particular to a simulation telemetry system and method for infrared extinction and particle diameter of biological aerosol. Background technique

[0003] Bioaerosols usually refer to active biological substances suspended in gas with a particle size between 100nm and 100μm, including viruses, bacteria, fungi, pollen and their by-products, etc. Among the existing analysis methods, the measurement of bioaerosol has higher requirements on the sampling process. The traditional physical aerosol sampling process is difficult to maintain the biological activity of bioaerosols. Factors such as dehydration, ultraviolet radiation, and temperature changes also make the sampling and analysis of bioaerosols difficult. Currently, some bioaerosol sampling methods require impact, Collision, filtration and other processes have poor reproducibility, only a ...

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Embodiment Construction

[0023] see figure 1 , a simulated telemetry system for measuring infrared spectrum extinction and particle size distribution of biological aerosols, including an aerosol generator 3, a sample pool 6, a particle size spectrometer 4, a large area source blackbody radiation source 5, a receiving telescope 2 and a Fourier In the leaf-transform infrared spectrometer 1, the sample outlet of the aerosol generator 3 is connected to the sample inlet 8 of the sample pool 6 through the trachea, and the sample outlet 9 of the sample pool 6 is connected to the particle size spectrometer 4 through the trachea, and in the sample pool 6 A fan 7 is provided, and the bioaerosol sample ejected from the sample outlet of the aerosol generator 3 enters the sample pool 6 through the trachea, and under the purging action of the fan 7, the bioaerosol sample diffuses in the sample pool 6, and Enter the particle size spectrometer 4 through the sample outlet 9 and the trachea of ​​the sample pool 6 to an...