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Spectrograph type laser radar system detecting bioaerosol

A technology of biological aerosol and laser radar, applied in the field of spectral ritual laser radar system, can solve the problems of complex composition, lack of detection means of time and space distribution characteristics, etc., and achieve the effect of single function

Inactive Publication Date: 2016-02-10
LANZHOU UNIVERSITY
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Problems solved by technology

Up to now, various bioaerosol monitoring methods have obtained many very valuable research results, but detection methods that can quickly obtain the temporal and spatial distribution characteristics of bioaerosol properties (especially their vertical distribution) are still lacking.
In addition, due to the characteristics of various types, rich sources, and complex components of bioaerosols, its detection technology is more challenging.

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  • Spectrograph type laser radar system detecting bioaerosol

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Embodiment Construction

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] The spectrum laser radar system implemented in this implementation includes three functional subsystems: laser emission, echo signal reception, and signal acquisition. The laser emission subsystem emits ultraviolet and near-infrared laser beams at the same time. After the laser beam is scattered by the bioaerosol particles in the atmosphere, the echo signal receiving subsystem is used to receive the backscattered signal and further process it, and then it is returned by a high-performance detector. The wave light signal is converted into an electrical signal and transmitted to the signal acquisition subsystem. The signal acquisition subsystem uses both analog and photon counting methods to collect, record and store the meter scattering signal; while for w...

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Abstract

The invention discloses a spectrograph type laser radar system detecting bioaerosol. The system comprises a laser emitting subsystem, an echo signal receiving subsystem and a signal collecting subsystem. The laser emitting subsystem is used for emitting high-energy pulse laser beams. The echo signal receiving subsystem is used for receiving back scattering signals and converting echo light signals into electric signals. The signal collecting subsystem is used for receiving the electric signals. The system solves the problems that an existing laser radar system is narrow in detection waveband and small in detection waveband number, and the function of the existing laser radar system is single. Besides, the laser radar system can achieve real-time, quick, reliable and non-contact continuous monitoring of atmosphere bioaerosol properties.

Description

Technical field [0001] The invention relates to a laser radar system, in particular to a spectrum laser radar system for detecting biological aerosols. Background technique [0002] As an advanced active remote sensing instrument, lidar can achieve continuous fine detection of atmospheric composition and state. The difference between lidar and microwave radar is that it uses laser as the emission source while the latter uses microwave. Since the world's first laser came out in 1960, due to its unique technical advantages in detection range, temporal and spatial resolution, and long-term continuous monitoring, lidar has been widely used in many fields of military and civilian use. The lidar system is mainly composed of three parts: the laser emission subsystem, the echo signal receiving subsystem and the data acquisition subsystem. There are many types of lidar, which can be classified according to the detection platform, working wavelength, scattering mechanism, and detection t...

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Application Information

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IPC IPC(8): G01N21/64G01N21/65G01N21/21G01S17/88G01S7/491
Inventor 黄忠伟黄建平周天
Owner LANZHOU UNIVERSITY
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