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Three-source portable emissivity tester and testing method thereof

A specific emissivity and portable technology, applied in the field of portable emissivity tester and its measurement, can solve the problems of inability to analyze the influence of downlink radiation measurement accuracy, the structure is not suitable for the lens size, etc., to achieve increased measurement content and high measurement accuracy Effect

Active Publication Date: 2013-01-16
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

[0004] In order to solve the problem that the structure of the existing specific emissivity measuring instrument is not suitable for the lens size of various infrared radiometers, and the existing specific emissivity measuring instrument, because each measurement only has a single sky downlink radiation intensity, it cannot be analyzed Influence of the Intensity and Angle of Downward Radiation on Its Measurement Accuracy

Method used

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  • Three-source portable emissivity tester and testing method thereof
  • Three-source portable emissivity tester and testing method thereof

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0036] figure 1 It is a schematic diagram of the three-source portable specific emissivity measuring instrument of the present invention, which includes a cavity, an observation ground object positioning board 10 and an infrared radiometer, and the cavity includes a main cavity 3, side cavities 6 and 9, wherein the side cavities The cavities 6 and 9 are located on both sides of the main cavity 3, each cavity is connected and each cavity is polished and gold-plated inside and outside, the top surface of the main cavity is parallel to the bottom surface and parallel to the horizontal plane, and the top surface has a Sky downgoing radiation entrance hole, the entrance hole is 0 degree zenith angle sky downgoing radiation entrance hole 2, the vertical lines of the two surfaces connected to the top surface are respectively 45 degrees and 37 degrees...

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Abstract

The invention discloses a three-source portable emissivity tester and a testing method thereof. The three-source portable emissivity tester comprises a cavity, an observed surface feature positioning plate (10) and an infrared radiometer. The top of the cavity consists of three planes at different angles, a 0-degree zenith angle sky downlink radiation incident hole (1), an infrared radiometer observation hole (8) and a 37-degree sky downlink radiation incident hole (5) are formed and respectively provided with hole covers (1, 4 and 7), the observed surface feature positioning plate (10) is provided with a surface feature observation hole (11), a reflector plate is disposed between the observed surface feature positioning plate (10) and the cavity, and a gold-plated circular reflector in the shape the same with the surface feature observation hole (11) is disposed at the center of the reflector plate. In the testing method, 0-degree or 37-degree zenith angle sky downlink radiation and 0-degree and 37-degree zenith angle sky downlink radiations are taken as radiation sources respectively for emissivity measurement, emissivity measurement content is added and measurement precision is high, and the structure of the tester can be adaptable to size of lenses of different infrared radiometers.

Description

technical field [0001] The invention relates to a quantitative remote sensing measuring instrument and a measuring method thereof. Specifically, the invention relates to a portable specific emissivity measuring instrument suitable for outdoor measuring and a measuring method thereof. Background technique [0002] The surface temperature of an object is the energy value of the average molecular motion of the object interface, which mainly depends on the following three parameters: surface radiation temperature, ambient irradiance and specific emissivity. The specific emissivity of an object indicates the ability of an object to emit thermal radiation. The measurement of the temperature of surface objects plays an important role in many scientific research and application fields. Accurate measurement of specific emissivity can obtain the true temperature of surface objects. The existing specific emissivity measurement technology mainly solves the specific emissivity by changin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01J5/08
Inventor 张仁华邵全琴樊江文邴龙飞
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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