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Method and apparatus for detecting water vapor condensation

A technology of condensate and measuring equipment, which is applied in measuring devices, rainfall/precipitation meters, instruments, etc., can solve the problems of measurement parameter error and inaccuracy, and achieve the effect of improving measurement accuracy and improving measurement accuracy.

Active Publication Date: 2015-08-26
VAISALA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although the device according to the prior art gave relatively good measurement results, inaccuracies were found in the results both during weather changes and when the device was placed at different altitudes above sea level
Changes in the altitude of the measuring device surprisingly cause errors in various measured parameters

Method used

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  • Method and apparatus for detecting water vapor condensation
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  • Method and apparatus for detecting water vapor condensation

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Embodiment Construction

[0025] The following terms will be used in the description in the context of the present invention.

[0026] Precipitation accumulation: The vertical depth of falling water on a flat surface. The standard unit is mm.

[0027] Precipitation Intensity: The cumulative amount of precipitation per unit of time. The standard unit is mm / h.

[0028] Droplet Size Distribution: The number of water droplets of each size in a unit volume of air.

[0029] When measuring precipitation accumulation, what is measured is the total volume of water droplets detected per unit surface area.

[0030] When measuring the kinetic energy of precipitation according to the prior art, as mentioned above, the sum of the kinetic energies of individual precipitation droplets is E=1 / 2 mv 2 .

[0031] according to figure 1 , the sensor 1 includes a detector surface 2, a detector 3, and measurement electronics 4 and a calculation algorithm, wherein water vapor condensation (such as rainwater droplets and / ...

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Abstract

A method and apparatus in connection with a hydrometeor measuring device. According to the method, the amount of precipitation is determined with the aid of the number and size of the hydrometeors. The determining of the size of the hydrometeors is altered as a function of the prevailing atmospheric pressure, in such a way that, the higher the atmospheric pressure, the larger a hydrometeor with the same speed will be estimated to be.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 associated with a measuring device for detecting condensation. [0002] The invention also relates to a measuring device for detecting water vapor condensation. Background technique [0003] The method to which the present invention concerns sensors for the measurement of various forms of precipitation, especially water, snow and hail, is based on the detection of the mechanical impact of condensation when it hits the surface of the detector, or accordingly on the remote detection. In remote detection devices, precipitation is estimated optically, acoustically, or by means of radio and / or microwaves. In these devices, wave motion is related to precipitation, and parameters for measuring precipitation are defined based on reflected, attenuated, or scattered wave motion. [0004] The information produced by the sensors may be precipitation amount, precipitation intensity, precipita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/14
CPCG01W2203/00G01W1/00G01W1/14
Inventor A.萨尔米L.埃洛马
Owner VAISALA