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Large-surface-source blackbody radiation source based on gas-liquid two-phase reflux temperature control

A technology of black body radiation source and area source black body, which is applied in the field of infrared remote sensing external field radiation calibration application, can solve the complex structure of the system, it is difficult to meet the precise temperature control, and cannot guarantee the temperature and uniformity of the surface temperature of the large area source black body source. etc., to achieve the effect of high emissivity

Pending Publication Date: 2020-01-31
启东中科光电遥感中心 +1
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Problems solved by technology

This temperature control method improves the temperature range and accuracy of the surface source blackbody, but its system structure is complex, and it can only achieve temperature control higher than the ambient temperature, and it is difficult to meet the requirements of the field temperature greater than 1m. 2 The demand for precise temperature control within a certain temperature range of the large area source blackbody cannot guarantee the temperature and uniformity of the surface temperature of the large area source blackbody source

Method used

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  • Large-surface-source blackbody radiation source based on gas-liquid two-phase reflux temperature control
  • Large-surface-source blackbody radiation source based on gas-liquid two-phase reflux temperature control
  • Large-surface-source blackbody radiation source based on gas-liquid two-phase reflux temperature control

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Embodiment Construction

[0036] In order to make the purpose, features and advantages of the present invention clearer, a specific embodiment of the present invention is described in more detail. In the following description, many specific details are set forth so as to fully understand the present invention. However, the present invention can be practiced in many other ways than described and, therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] The following is an example of a large surface source blackbody radiation source with a design area of ​​3m * 3m, and provides specific implementation methods according to the structural characteristics and functions of the present invention:

[0038] The 3m×3m large surface source blackbody is formed by splicing sub-blackbody components of 1m×1m square in a 3×3 manner through splicing components. The pipe is connected to one end of the fluid pipeline, and the liquid outlet is connected to the other end of the fluid pi...

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Abstract

The invention discloses a surface source blackbody radiation source based on gas-liquid two-phase reflux temperature control. The surface source blackbody radiation source comprises a large surface source blackbody, a supporting bottom plate, a gas-liquid two-phase reflux device and a supporting frame; the large surface source blackbody, the supporting bottom plate and the gas-liquid two-phase reflux device are all supported by the supporting frame, the large surface source blackbody is supported by the supporting bottom plate, and the gas-liquid two-phase reflux device is located under the supporting bottom plate. The provided surface source blackbody radiation source based on gas-liquid two-phase reflux temperature control is characterized by high reflectivity and large surface source, gas-liquid two-phase reflux temperature control enables that the large surface source blackbody can realize accurate temperature control within certain temperature range without being limited by the field environment, the stability and uniformity of the temperature of the large surface source blackbody are ensured, and the requirements for high reflectivity and high uniformity of high-spectral andinfrared load high-precision external field radiation calibration are met.

Description

technical field [0001] The invention relates to the technical field of infrared remote sensing field radiation calibration application, in particular to a large area blackbody radiation source based on gas-liquid two-phase reflux and temperature control. Background technique [0002] A black body is an ideal object, its emissivity and absorptivity are both 1, that is, it can absorb all wavelengths of radiation at any temperature and emit radiation to the maximum. An ideal black body does not exist in reality. The radiation of a small hole opened in a closed cavity can be regarded as black body radiation, and its emissivity is very close to 1. Such a cavity is called a black body cavity. In practical applications, the blackbody cavity is used as a blackbody radiation source for infrared temperature measurement, infrared camera calibration, etc., and is widely used in various infrared devices. [0003] The main aspect that affects the accuracy and resolution of infrared devi...

Claims

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Application Information

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IPC IPC(8): G01J5/00G01J5/20G01J5/02
CPCG01J5/0003G01J5/20G01J5/026
Inventor 刘银年孙思华刘书锋孙德新
Owner 启东中科光电遥感中心
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