Outdoor all-weather and all-time atmospheric aerosol particle laser radar device

Abstract

The invention discloses an outdoor all-weather and all-time atmospheric aerosol particle laser radar device which comprises an integrated square cabin, a laser, an intelligent control unit, an optical unit, a signal acquisition and analysis unit, an electric wiper, and a blowing device. The intelligent control unit controls the operation of the machine equipment. The laser emits pulse laser, which is incident on the atmosphere after beam expansion. An optical receiving unit receives back scattered light of atmospheric aerosol particles. A polarization detection prism of a receiving channel separates vertical polarization components from parallel polarization components. A photoelectric detection module converts the light into electrical signals. The signal acquisition and analysis unit acquires, analyzes and displays the electrical signals. Thus, vertical distribution information of the atmospheric aerosol particles is obtained. The device improves the signal-to-noise ratio of detection signals, and has such functions as lightning protection design, photoelectric detection module high-voltage online program-controlled adjustment, instrument internal temperature monitoring and automatic skylight cleaning. The device has a protection grade up to IP65, and meets the requirement for outdoor all-weather and all-time operation.

Description

technical field [0001] The invention belongs to the technical field of meteorological environment monitoring, in particular to an outdoor all-weather and all-weather atmospheric aerosol particle laser radar device. Background technique [0002] In recent years, global energy consumption has increased year by year, and the situation of air pollution is severe. Lidar is widely used to detect parameters such as atmospheric aerosols, visibility, boundary layer, ozone, etc., and uses laser as a light source to emit into the atmosphere, where it will scatter and absorb with the atmosphere , in which the backscattering signal is received by the lidar telescope, converted into an electrical signal by a photoelectric detector, and the information of atmospheric molecules and aerosol particles is obtained through data collection and algorithm inversion. [0003] Lidar can obtain information on atmospheric molecules and aerosol particles. It is an indispensable monitoring device in the...

AI Technical Summary

Problems solved by technology

However, the current lidar equipment has the following shortcomings: the signal-to-noise ratio of daytime detection is insufficient, and most of them are placed in the station building, which requires additional funds to build the station building, which limits the selection of monitoring locations; lack of effective lightning protection Design, poor safety and reliability when the equipment is running outdoors; the input high voltage of the photoelectric detection module cannot be adjusted, and the signal is too weak and the signal is saturated during actual operation; the cleaning of the skylight requires a lot of labor to complete, and the maintenance cost is high

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