Radiation shield for meteorological measurement

An anti-radiation and meteorological technology, used in measuring devices, measuring heat, thermometer parts, etc., can solve the problems of inability to increase airflow speed, difficult to eliminate thermal pollution effects, etc., to avoid thermal pollution effects, low radiation errors, reduce heat transfer effect

Inactive Publication Date: 2016-09-07
NANJING MICROSENSING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, the present invention aims to provide a radiation shield for meteorological measurement, which uses a plurality of conduits with openings at both ends to reduce the radiation error of the sensor probe and increase the airflow velocity, to a certain extent solve the problem of Solve the technical problems that the existing radiation shield cannot increase the airflow velocity and the heat pollution effect is difficult to eliminate when meeting the requirements of reducing the solar radiation received by the temperature sensor probe

Method used

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specific Embodiment 1

[0028] Such as figure 1 The structure diagram of the present invention in , includes at least three conduits 1 with openings at both ends, and each conduit is equipped with at least one temperature sensor probe. Multiple temperature sensor probes can share one multi-channel signal conditioning circuit, or multiple signal conditioning circuits can be set to measure each temperature sensor probe separately. The cross-section at both ends of the conduit 1 can be as image 3 The square shown, such as Figure 4 Circular as shown, may also be polygonal or elliptical. A temperature sensor probe can generally be mounted at a central location 6 of the conduit 1 .

[0029] Under the condition of any horizontal wind direction, there is at least one duct with the smallest angle with the wind direction. Therefore, compared with other ducts, this duct has relatively good ventilation, and the relatively high air velocity in the duct simultaneously makes the duct inside The radiation erro...

specific Embodiment 2

[0033] In order to achieve the effect of preventing the sun from directly irradiating the conduit 1, such as figure 1 and figure 2As shown, a reflector 2 is provided above the conduits, and a common reflector can be provided for all conduits, or a reflector can be provided for each conduit, and each conduit is distributed along the edge of the reflector in the area blocked by the reflector. The reflector 2 can be made of metal, such as aluminum or aluminum alloy, which can not only obtain better mechanical properties, but also make the reflector less prone to overheating due to solar radiation due to its high reflectivity. A layer of silver film can be arranged on the surface of the reflector 2 to further improve the reflectivity.

[0034] The reflector can be disc-shaped or other shapes. For a circular reflector, the ducts are arranged in a circle along the edge of the circular reflector in the shaded area of ​​the reflector. When the number of ducts is not less than 6, th...

specific Embodiment 3

[0039] Such as figure 1 , figure 2 , Figure 6 , Figure 7 As shown, the radiation shield also includes at least one suspension plate 3 between the conduit and the reflector, a common suspension plate can be provided for all conduits, or a suspension plate can be provided for each conduit, and the conduit 1 passes through the connecting piece 4 Fixedly connected with the suspension plate 3, the suspension function of the suspension plate 3 improves the stability of the radiation shield structure, and prevents heat conduction between the reflector 2 and the conduit 1 at the same time. In order to further prevent heat conduction between the reflective plate 2 and the suspension plate 3 , a heat insulating column 5 may also be provided between the reflective plate 2 and the suspension plate 3 .

[0040] It has been verified by experiments that under the same environmental conditions, the invention can reduce the radiation error of the temperature sensor probe to the order of ...

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Abstract

The invention discloses a radiation shield for meteorological measurement, and belongs to the technical field of a meteorological instrument, for solving the technical problem of providing a radiation shield for meteorological measurement, capable of reducing sensor radiation errors and lag errors. The radiation shield comprises at least three guide tubes, the two ends of each guide tube is provided with an opening, each guide tube is internally at least provided with a temperature sensor probe, at least one guide tube has relative good ventilation whatever wind directions the radiation shield is disposed at, and thus solar radiation errors and lag errors of the temperature sensor probe can be reduced. Even if one guide tube is damaged, other guide tubes can still work normally, the whole radiation shield is little affected, and the reliability is quite good.

Description

technical field [0001] The invention relates to a radiation shield for meteorological measurement, which belongs to the technical field of meteorological instruments. Background technique [0002] In the process of measuring the air temperature by the temperature sensor of the weather station, the solar radiation during the day causes the temperature sensor to heat up, which is higher than the air temperature of the surrounding environment. The error caused by this phenomenon is called the solar radiation error. Due to the long-wave radiation of the instrument at night, the temperature on the surface of the temperature sensor will be lower than the air temperature of the surrounding environment. In the above two cases, the temperature measurement error caused by radiation is usually collectively referred to as radiation error. At present, the weather station uses shutters or natural ventilation radiation shields to avoid direct radiation from the sun to the temperature sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K1/14G01W1/00G01K1/08
CPCG01K1/14G01W1/00
Inventor 刘清惓杨杰戴伟
Owner NANJING MICROSENSING ELECTRONICS TECH CO LTD
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