Atmospheric visibility measuring system

A technology of atmospheric visibility and measurement system, which is applied in the direction of measuring devices, transmittance measurement, scattering characteristic measurement, etc., can solve the problems that measurement errors cannot be fully compensated, the reliability of measurement data decreases, and the lack of representativeness of visibility values, etc., Achieve the effects of avoiding the influence of background light, avoiding optical path adjustment, and high reliability
CN102879359AActive Publication Date: 2013-01-16HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Publication Date
2013-01-16

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Abstract

An atmospheric visibility measuring system is characterized in that the system can realize full-scale precise measurement of atmospheric visibility. The system adopts a measurement structure with a single light source and double baselines; a light source transmitting terminal and two signal receiving terminals are integrated into a whole body, which reduces the complexity of optical path debugging and measurement electronic system design, reduces requirements for field installation, improves system practicality, and reduces equipment cost. Meanwhile, the laser light source is subject to high frequency modulation, and an optical filter is installed in the front of a detector, which improve the system capability of resisting background light and stray light influence. In the signal sampling part, synchronous demodulation weak signal detection technology is adopted, which improves the measurement precision and measurement range of the system. The atmospheric visibility measuring system of the invention is applicable to industries of meteorological stations, airports, highway, harbours, atmosphere environment monitoring, and the like.
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Description

technical field

[0001] The invention relates to an atmospheric visibility measurement system, which belongs to the technical fields of meteorological element monitoring technology and traffic safety monitoring technology. Background technique

[0002] Atmospheric visibility is a routine item in meteorological observation. It is a physical quantity that characterizes the transparency of the atmosphere, represents the optical physical state of the atmosphere, and is closely related to weather changes. In recent years, continuous meteorological observations have shown that due to the aggravation of air pollution, local smog in cities often leads to low visibility, which poses a great threat to public transportation and the health of residents. Visibility has also become a measure of pollutants in the atmosphere. an important indicator. Therefore, the real-time measurement and release of visibility has important practical significance for meteorology, atmospheric environment, a...

Claims

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