Temperature sensor for meteorological station
A technology of temperature sensor and weather station, applied in the field of temperature sensor, can solve the problems of difficulty in meeting the second requirement, difficulty in eliminating heat pollution effect, difficulty in temperature sensor performance, etc., and achieves prevention of secondary radiant heat pollution, good timeliness, Reduces the effect of reflected radiation
Inactive Publication Date: 2020-06-16
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology
The use of blades or rings helps to meet the first requirement, but it is difficult to meet the second requirement, making it difficult to eliminate the effect of thermal pollution
Therefore, there is a contradiction between the above two design requirements, which brings difficulties to the improvement of the performance of the temperature sensor.
Method used
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[0015] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Such as figure 1 and figure 2 The shown temperature sensor for a weather station includes a first hemispherical body 1 and a second hemispherical body 2 arranged directly above the first hemispherical body 1, and the planes of the first hemispherical body 1 and the second hemispherical body 2 are horizontal , The spherical surfaces are opposite and arranged at intervals, the side between the first hemisphere 1 and the second hemisphere 2 is provided with a deflector 3, the deflector 3 is perpendicular to the plane of the first hemisphere 1, and the second hemisphere 1 The center of the spherical surface of the hemisphere 1 is located on the plane where the deflector 3 is located. The upper and lower sides of the deflector 3 are respectively seamlessly spliced with the spherical surfaces of the second hemisphere 2 an...
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The invention discloses a temperature sensor for a meteorological station. The temperature sensor comprises a first hemispheroid and a second hemispheroid arranged right above the first hemispheroid,the planes of the first hemispheroid and the second hemispheroid are horizontal, and the spherical surfaces are opposite; the first hemispheroid and the second hemispheroid are arranged in a spaced manner, flow guide plates are arranged on the side edges between the first hemispheroid and the second hemispheroid, a plurality of the flow guide plates are uniformly arranged on the side edges betweenthe first hemispheroid and the second hemispheroid at intervals, every two adjacent flow guide plates and the spherical surfaces of the first hemispheroid and the second hemispheroid form a ventilation pipeline with a large outer opening and a small inner opening, and the inner edges of the four flow guide plates form a central channel with an opening in the side edge; and a temperature sensor probe is arranged in the central channel. By increasing the airflow speed around a probe of the temperature sensor, the influence of temperature rise caused by direct solar radiation on the temperaturesensor is reduced, reflected solar radiation from the underlying surface is reduced, and the stability and heat insulation of the temperature sensor structure are enhanced.
Description
technical field [0001] The invention relates to the technical field of meteorological instruments, in particular to a temperature sensor used in a weather station. Background technique [0002] Solar radiation during the day will cause the temperature sensor of the weather station to heat up, making its observed value higher than the air temperature of the surrounding environment. The error caused by this phenomenon is called solar radiation error. At present, the weather station uses shutters or natural ventilation radiation shields to avoid direct radiation from the sun to the temperature sensor probe and reduce radiation errors. However, because the white coating on the outer surface of the shutter or radiation shield is difficult to reflect 100% solar radiation, to a certain extent, the traditional shutter or radiation shield, especially its blades and rings, will still produce significant radiation heating. This causes the airflow flowing into its interior to be heated...
Claims
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Login to View More IPC IPC(8): G01W1/00G01K13/02G01K1/12G01K13/024
CPCG01W1/00G01K13/02G01K1/12G01K13/024
Inventor 杨杰刘清惓陈高颖丁枫袁宇
Owner NANJING UNIV OF INFORMATION SCI & TECH