Aerated solids particle laser analyzer

Abstract

The invention provides an aerosol particle laser analyzer which online and continuously detects the aerodynamic diameter and particle quantity of the aerosol particles in the air one by one in real-time and identifies whether the particles are biological particles; the aerosol particle laser analyzer comprises a particle beam queuing acceleration sampling system wrapped by shell flows, a dual-peak laser aerodynamic diameter measurement system, a biological particle fluorescent detection system induced by ultraviolet laser, an ineffective and superposed particle identification circuit, data processing, displaying and memorizing software, and a communication module. The aerosol particle laser analyzer can not only detect the physical parameters such as aerodynamic diameter, particle quantity and the like of the aerosol particles, but also can judge whether the particles are active biological particles or not according to the natural characteristic that the active biological particle emits bioluminescence when being induced and can measure the parameters of the active biological particles such as the quantity, the concentration and the like; the aerosol particle laser analyzer has exact detection results and can be used conveniently and fast for detection; and the parts have long service life and the volume of the aerosol particle laser analyzer is small, thus being convenient for movable usage.

Description

technical field [0001] The invention relates to an aerosol particle laser analyzer, which is mainly used for detecting the aerodynamic diameter and particle quantity of the aerosol particles in the air, and judging whether they are biological particles and their quantity and concentration. Background technique [0002] Since "9.11", terrorists have constantly changed their methods and used biological agents (such as the anthrax powder incident) to create troubles, which have had a great impact on social tranquility and economic development, and have caused serious trauma to people's hearts; other hostile forces may also It has the ability to use highly pathogenic microorganisms to carry out attacks, so the domestic bioterrorism situation will become increasingly severe in the future. Due to the existence and frequent occurrence of bioterrorism threats, many countries have closely linked biodefense with national security and become an important part of national security strat...

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Problems solved by technology

The problem of this instrument is that the energy of the pulsed laser changes with the change of the trigger frequency, the energy is unstable, the detected analog signal is weak, it is easil...

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