Continuous laser particle analyzer

Abstract

The invention provides a continuous laser particle analyzer. The laser adopts a continuous laser and the continuous laser particle analyzer adopts alternating-current power supply or a direct-current power supply for supplying power; and the power supply system is provided with a protective circuit simultaneously. The aerosol particle dimension and distribution of fluorescence intensity in the air sample can be obtained simultaneously by the one-step analysis. The continuous laser particle analyzer adopts a single continuous laser source; by the radiation of the continuous laser on the aerosol in the air sample, the aerosol particle dimension and distribution of fluorescence intensity in the air sample can be analyzed synchronously, the suspicious microorganism in the air sample can be monitored in real time and an early-alarm can be given.

Description

technical field [0001] The invention relates to an instrument for simultaneously analyzing the size and fluorescence intensity distribution of aerosol particles in an air sample by using the laser scattering characteristics and the fluorescence characteristics of biological particles, and monitoring and giving early warnings for suspicious microorganisms in the air samples in real time. Background technique [0002] Biological pathogenic substances spread through the air in the widest range and are the most harmful. There are all kinds of suspended particles in the air, including non-biological particles, biological particles, and complexes of biological particles and non-biological particles adsorbed together. The inhalable particles can enter the human respiratory system and deposit in the nose. Pharynx, trachea, bronchi, bronchioles, alveoli, and through the action of phagocytes, these particles can be transported to other organs through the blood, causing various disease...

AI Technical Summary

Problems solved by technology

The problem that the instrument exists is that the energy of the pulsed laser changes with the trigger frequency, the energy is unstable, the detected analog signal is weak, it is easily interfered by other signals, and the signal-to-noise ratio is poor; in addition, its structure The design makes the equipment bulky, which is not convenient for vehicles or other mobile places

[0006] However, the fluorescence and scattered light analysis systems of the aerosol particle laser analyzer disclosed in this invention patent respectively use different emission light sources and light paths. The synchronization between the two sets of light sources and light paths, scattering and fluorescence channels is difficult to achieve, so the actual measured particle size parameters and bioluminescent characteristics are not synchronized, and the determination and monitoring of biological particles cannot be very accurate

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