An aerosol sensor

Abstract

The invention provides an aerosol sensor, comprising an aerosol inlet, an aerosol electrifying unit, a sedimentation unit, a charge detection unit, a control unit, a signal processing unit, and an aerosol outlet, wherein the aerosol inlet, the aerosol electrifying unit, the sedimentation unit, the charge detection unit and the aerosol outlet are sequentially connected; the charge detection unit is connected with the signal processing unit; the control unit is respectively connected with the sedimentation unit and the charge detection unit; the charge detection unit comprises at least one charge detection sub-unit; the at least one charge detection sub-unit is sequentially connected; and each charge detection sub-unit is connected with the control unit, and is connected with the signal processing unit. The measurement of aerosol particles within a large particle size measurement range can be achieved through the aerosol sensor provided by the invention, and meanwhile, the aerosol sensor is easy to miniaturize.

Description

technical field [0001] The invention relates to the technical field of aerosol measurement, in particular to an aerosol sensor. Background technique [0002] Aerosol is a suspension system formed by suspending liquid or solid particles in a gas medium, in which the characteristic particle size of the particle phase is generally 1nm to 100μm, but because particles with a particle size larger than 1μm are easy to settle, the stable suspension time is short. Particles with a particle size of less than 10nm are difficult to detect, so general aerosol real-time measurement is only for aerosol particles in the range of 10nm to 1μm. [0003] Concentration and particle size are the two most important indicators of aerosols. The existing aerosol real-time measurement methods for these two indicators mainly include methods based on optical principles and methods based on electrical principles. Traditional instruments based on optical principles mainly include optical particle counter...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the instruments capable of real-time measurement of aerosols in a wide range are almost all large-scale instruments with complex structures, which cannot meet the requirements of multi-point and distributed applications in a limited space environment.

And some miniaturized aerosol measuring instruments have a small measurement range

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