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Calibration system of atmosphere visibility meter and calibration method thereof

An atmospheric visibility and calibration technology, which is applied in the field of atmospheric visibility instrument calibration system, can solve the problems of accuracy error, long calibration time, troublesome development and production of visibility instruments, etc., and achieves the effect of low energy consumption and convenient control.

Inactive Publication Date: 2010-03-03
程绍荣
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Problems solved by technology

However, the error caused by the transfer method is various, such as: human subjectivity; the optical characteristics of the target itself; the directionality of the target distance; the cause of weather changes; the temperature, humidity, wind, smoke, dust, etc. In addition, there are also disadvantages such as long calibration time, which generally takes ten days as a count, which causes great difficulties for the calibration of the visibility meter. In this way, the accuracy error of the visibility meter calibrated is It is conceivable that its reliability will be greatly reduced, which will cause a lot of trouble for the development and production of the visibility meter

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  • Calibration system of atmosphere visibility meter and calibration method thereof
  • Calibration system of atmosphere visibility meter and calibration method thereof
  • Calibration system of atmosphere visibility meter and calibration method thereof

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[0018] In the atmosphere, the attenuation of light is mainly caused by scattering and absorption. In the visible light band, the absorption effect can be ignored, and the scattering phenomenon caused by particles in the atmosphere is the main factor that constitutes the reduction of visibility. Therefore, the extinction coefficient and the scattering coefficient can be regarded as equal in engineering.

[0019] The basic principle of measuring visibility is to measure the extinction coefficient δ by the instrument, and then calculate the atmospheric visibility and meteorological optical range according to r=-lnξ / δ derived from the KoschM: eder (Koschman) law.

[0020] Bouguer's extinction law is:

[0021] I=I o exp(-δL) (1)

[0022] Where: δ is the extinction coefficient; I o I is the intensity of the incident light; I is the intensity of the transmitted light; L is the length of the optical path.

[0023] The schematic diagram of measuring extinction coefficient by transm...

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Abstract

The technical problem to be solved of the invention aims at providing a system for fast, conveniently and exactly calibrating an atmosphere visibility meter. The calibration system of the atmosphere visibility meter comprises a gradual change ratio light attenuation lens; the gradual change ratio light attenuation lens is positioned on an optical path between the transmitting end of the visibilitymeter and the receiving end of the visibility meter; and the gradual change ratio light attenuation lens, the transmitting end and the receiving end are positioned in cleaning atmospheric space. Theinvention completely considers the affects such as environment, temperature, weather variation, and the like, and can conveniently and fast calibrate the atmosphere visibility meter; by adopting the system, one atmosphere visibility meter can be calibrated only with 4-8 hours; the system has low system energy consumption and no environment pollution, and is convenient in operating and controlling;and the invention precludes the difficulties to the calibration of the atmosphere visibility meter, which are caused by human beings, weather, environment, temperature, humidity level, time, and thelike, and can scientifically, objectively and fast calibrate the various atmosphere visibility meters.

Description

technical field [0001] The invention relates to a calibration system and a calibration method for an atmospheric visibility meter. Background technique [0002] Since the 1980s, with the rapid development of optoelectronic technology, the development of automatic meteorological, traffic meteorological, aviation, hydrological, forest, airport and other meteorological monitoring has been promoted, and corresponding monitoring systems and products have also emerged as the times require. Visibility meters offer a multitude of practical applications. [0003] At present, the visibility meters developed and produced mainly include transmission type, scattering type, camera type, laser radar and so on. So far, there is no simple and convenient calibration system or device for the known visibility meters developed and produced at home and abroad. At present, it is generally used in the natural environment to operate the distance of several measured points by people, and divide the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G01N21/59
Inventor 程绍荣吕军杨宁秦怀川蒋红星张珂
Owner 程绍荣
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