Continuous laser particle analyzer

A particle analyzer and laser technology, which is applied in individual particle analysis, material excitation analysis, particle and sedimentation analysis, etc., can solve the problems of particle size parameters and bioluminescence characteristics not being synchronized, energy instability, and optical path redundancy, etc., to improve Environmental adaptability and stability, improved portability, and the effect of saving optical components

Inactive Publication Date: 2011-07-27
北京汇丰隆生物科技发展有限公司 +1
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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 ae

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  • Continuous laser particle analyzer
  • Continuous laser particle analyzer
  • Continuous laser particle analyzer

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing and example:

[0031] figure 1 One embodiment of a two-part parallel processing system for scattering and fluorescence of the present invention is illustrated. The scattered light and the fluorescent light respectively enter the scattering signal processing channel and the fluorescent signal processing channel through the shared optical path of the scattered light and the fluorescent light, and the gate signal generated by the gate signal circuit synchronously controls the parallel operation of the scattering signal processing channel and the fluorescent signal processing channel.

[0032] In the scattering signal processing channel, the scattered light is converted into a weak electrical signal by the scattered light detector and then amplified by the scattering signal amplification circuit. The amplified scattering signal passes through the gate signal circuit to generate a gat...

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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...

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Application Information

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IPC IPC(8): G01N15/14C12M1/34G01N21/64
Inventor 鹿建春刘毅李劲松刘强张晓清刘航刘爱明
Owner 北京汇丰隆生物科技发展有限公司
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