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A non-contact surface temperature measuring instrument and method

A surface temperature, non-contact technology, applied in the field of measuring instruments, can solve the problems such as the inability to effectively guarantee the measurement accuracy of the descending radiation of the hemisphere atmosphere, the influence of the surface emissivity on the measurement accuracy of the surface temperature, and the neglect of the spectral heterogeneity of the surface emissivity. Achieve non-contact accurate measurement, eliminate influence, and improve accuracy

Active Publication Date: 2018-11-09
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS +1
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Problems solved by technology

This measurement method makes atmospheric downgoing radiation vulnerable to factors such as clouds
When the non-Lambert characteristic of the atmospheric downward radiation is prominent, the measurement accuracy of the hemispheric atmospheric downward radiation cannot be effectively guaranteed
[0005] Second, the spectral heterogeneity of surface emissivity affects the measurement accuracy of surface temperature
Spectral heterogeneity of surface emissivity is ignored in the process of inverse calculation of surface temperature by existing methods

Method used

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  • A non-contact surface temperature measuring instrument and method
  • A non-contact surface temperature measuring instrument and method
  • A non-contact surface temperature measuring instrument and method

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] figure 1 A non-contact surface temperature measuring instrument shown includes an assembly bracket, an infrared radiometer 6, and a four-component net radiometer 7; the assembly bracket is composed of a support base 1, a vertical arm 2, and an outreach arm 3, which are mainly used for Fixing and supporting the measuring equipment; the support base 1 is a folding tripod, and the support base 1 is arranged at the bottom of the vertical arm 2, which can ensure the stability of the relative position of the measurement; the outreach arm 3 is vertically arranged at the upper end of the vertical arm 2, and Both the extension arm 3 and the vertical arm 2 are multi-section, which is convenient for adjusting the length or height of the support; the extension arm 3 can directly use a rod body with a telescopic function, so as to adjust th...

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Abstract

The invention discloses a non-contact land-surface-temperature measurement instrument and method. The measurement instrument comprises an assembly support, an infrared radiometer and a four-componentnet radiometer; the assembly support is composed of a supporting base, a vertical arm and an extending arm; the supporting base is a foldable tripod and is fixedly arranged at the bottom end of the vertical arm; the extending arm is perpendicularly arranged at the upper end of the vertical arm; a solar cell panel and a central control box are fixedly arranged on the vertical arm through device clamping buckles, and the infrared radiometer and the four-component net radiometer are fixedly arranged on the extending arm through device clamping buckles; the infrared radiometer is installed at theside end of the extending arm, and perpendicularly-downward observation of a zenith angle of 180 degrees can be conveniently conducted. According to the non-contact land-surface-temperature measurement instrument and method, the measurement accuracy of atmospheric downward radiance can be guaranteed, and the accuracy of following land-surface temperature measurement is thus improved. In addition,the influence of the spectrum heterogeneity of a wide-channel land-surface emissivity spectrum on land-surface-temperature estimation can be effectively avoided, and non-contact accurate measurement of the land-surface temperature is achieved.

Description

technical field [0001] The invention relates to a measuring instrument and a method, in particular to a non-contact surface temperature measuring instrument and a method. Background technique [0002] As one of the core parameters in the field of remote sensing, land surface temperature plays a very important role in many scientific researches. Its most typical applications include research on global climate change and ecological environment monitoring. Considering the key role of surface temperature in various fields, how to effectively and accurately measure the surface has become the focus and difficulty of related research. [0003] The non-contact measurement method is mainly based on the infrared radiometer, and its basic principle is based on the fact that all objects with a temperature above absolute zero will emit radiant energy. In the existing non-contact infrared temperature measurement method, the estimation of the surface temperature is mainly obtained by appr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/02G01J5/06
CPCG01J5/0205G01J5/06
Inventor 吴骅张雨泽房世峰段四波李召良
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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