Pyranometer based on vanadium dioxide

A technology of vanadium dioxide and sunshine, which is applied in the field of solar radiation measurement, can solve the problems of long response time, difficulty in finding photoelectric devices, and large changes in spectral response of photoelectric sensors with wavelength, so as to improve measurement accuracy and reduce costs. Effect

Active Publication Date: 2017-02-15
STATE GRID CORP OF CHINA +3
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The pyroelectric pyranometers currently used have low precision and long response time, which cannot meet the requirements of solar energy evaluation; while the spectral response of the photoelectric sensors used varies greatly with wavelength, and it is difficult to measure them in a wide wavelength range. Identify optoelectronic devices with consistent spectral response

Method used

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  • Pyranometer based on vanadium dioxide
  • Pyranometer based on vanadium dioxide
  • Pyranometer based on vanadium dioxide

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0018] Such as figure 1 As shown, a vanadium dioxide-based pyranometer includes an incident window 1, a heat sink 2, a filter 3, a vanadium dioxide film 4, a digital measurement correction circuit 5, an output interface 6 and a housing 7, and the incident window 1 It is arranged on the top of the casing 7, and the heat sink 2 is arranged below the incident window 1 inside the casing 7, the filter 3 is arranged under the heat sink 2, the vanadium dioxide film 4 is arranged under the filter 3, and the sunlight is incident After the window 1 enters, the vanadium dioxide film 4 is irradiated through the heat sink 2 and the filter 3 in sequence, and after the light is co...

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PUM

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Abstract

The invention discloses a vanadium dioxide-based sunshine intensity meter, which comprises an incident window, a cooling fin, a filter, a vanadium dioxide thin film, a digital measurement correction circuit, an output interface and a shell, wherein the incident window is arranged at the top end of the shell; the cooling fin is arranged below the incident window inside the shell; the filter is arranged below the cooling fin; the vanadium dioxide thin film is arranged below the filter; after sunshine enters from the incident window, light irradiates on the vanadium dioxide thin film sequentially via the cooling fin and the filter; after light-heat-resistance conversion is carried out on light via the vanadium dioxide thin film, output signals of the vanadium dioxide thin film are processed via the digital measurement correction circuit and are outputted via the output interface; and the vanadium dioxide thin film, the digital measurement correction circuit and the output interface are all arranged inside eth shell. The purposes of low cost, high sensitivity and high precision are achieved.

Description

technical field [0001] The invention relates to the field of solar radiation energy measurement, in particular to a vanadium dioxide-based pyranometer. Background technique [0002] The amount of solar radiation has great randomness, which causes the power generation of photovoltaic power plants to fluctuate due to changes in the intensity of solar radiation, and the range of changes is obvious due to meteorological factors such as cloud cover and atmospheric transparency. Therefore, the quantitative detection and long-term monitoring of solar radiation, the accumulation of a large amount of historical data, and the evaluation of solar resources have important practical significance. [0003] The pyroelectric pyranometers currently used have low precision and long response time, which cannot meet the requirements of solar energy evaluation; while the spectral response of the photoelectric sensors used varies greatly with wavelength, and it is difficult to measure them in a w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/42
Inventor 汪宁渤路亮夏正武陟晶刘国强韩自奋冉亮夏慧贾怀森李士强姚志宗李艳红丁坤李晓南陈钊张超
Owner STATE GRID CORP OF CHINA
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