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An infrared temperature measurement method and system

A technology of infrared temperature measurement and temperature measurement module, which is applied in the direction of radiation pyrometry, measuring device, optical radiation measurement, etc., can solve the problems of up to 0.5 ℃, error, etc., achieve accuracy improvement, overcome measurement error, and increase fault tolerance Effect

Active Publication Date: 2019-11-19
WUHAN GUIDE INFRARED CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the infrared energy distribution on the surface of an object does not change linearly with the temperature, the relationship between the infrared radiation energy and temperature of the infrared thermometers in the prior art is actually a curve rather than a straight line, such as figure 1 As shown, the abscissa is the radiation amount, and the ordinate is the temperature. When the temperature range between the measured object and the black body is less than 10°C, the accuracy is only 0.5°C, and when the measured temperature range exceeds 30°C, the error will even increase. Up to 0.5℃~1℃

Method used

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  • An infrared temperature measurement method and system

Examples

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Embodiment 1

[0045] The infrared temperature measuring device in Example 1 is used to measure the body temperature of the human body, so its temperature range is 30°C to 40°C. The measurement of this temperature range can be carried out through two blackbodies. One blackbody can be set to 35°C and the other to 35°C. 40°C, with Y16 as the standard of radiation (its specific definition is: for radiation D M After photothermal and thermoelectric conversion, it is quantified into numbers and stored in a 16-bit integer array), and the final calculation formula is human body surface temperature = 35°C + (D M -D 1 )×5℃ / D 2 -D 1 ).

[0046] The two boldfaces are self-developed by the applicant, model HT-2013-01. One is set to 35°C and the other is set to 40°C. Use the IR236 human body infrared thermometer as the radiation acquisition device to obtain the radiation of the black body and the target to be measured. The Fluke black body simulates the target to be measured, and obtains the Y16 val...

Embodiment 2

[0048] In zoos, in order to monitor the health of animals, since the body temperature of animals ranges from 35°C to 43°C, two blackbodies cannot meet the demand. Usually, four blackbodies are used, and the temperature is set at 30°C, 35°C. ℃, 40℃ and 45℃, the corresponding radiation doses are D 30 ,D 35 ,D 40 and D 45 , the radiation dose of the animal obtained is D M , the final animal body temperature T M The calculation formula is:

[0049] D. M ≥D 30 and D M 35 when T M =30+5 / (D 35 –D 30 )×(D M –D 30 );

[0050] D. M ≥D 35 and D M 40 when T M =35+5 / (D 40 –D 35 )×(D M –D 35 );

[0051] D. M ≥D 40 and D M 45 when T M =40+5(D 45 –D 40 )×(D M –D 40 ).

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Abstract

The invention discloses an infrared temperature measuring method and system. The infrared temperature measurement system includes a first black body, a second black body, ... an Nth black body, a radiation amount acquisition device and a calculation center, wherein, N is any integer greater than or equal to 2; the output terminal of the radiation amount acquisition device is connected to the The input end of the calculation center; the i-th black body is used to set its own temperature as T i , and T 1 ~T N increase sequentially, i is an integer from 1 to N; the radiation amount acquisition device is used to obtain the radiation amount D of the i-th black body i and the radiation dose D of the target to be measured M , the calculation center is used according to the temperature T of the i-th blackbody i , Radiation D i and the radiation dose D of the target to be measured M , to obtain the temperature T of the target to be measured M . The invention corrects the error caused by the infrared energy distribution on the surface of the object and the non-linear change of temperature through multiple blackbodies, thereby improving the accuracy of infrared temperature measurement.

Description

technical field [0001] The invention belongs to the field of temperature measurement, and more specifically relates to an infrared temperature measurement method and system. Background technique [0002] A blackbody is an idealized radiator, which absorbs all wavelengths of radiant energy, has no reflection or transmission of energy, and has an emissivity of 1 on its surface. It should be pointed out that there is no real black body in nature, but in order to clarify and obtain the distribution law of infrared radiation, an appropriate model must be selected in theoretical research, which is the quantized oscillator model of body cavity radiation proposed by Planck, thus deriving Planck's law of black body radiation, that is, the black body spectral irradiance represented by wavelength, is the starting point of all infrared radiation theories, so it is called the law of black body radiation. [0003] The principle of the infrared thermometer is to obtain the temperature of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00
CPCG01J5/00G01J5/0025G01J5/80
Inventor 陈振黄立黄建忠齐哲明王育强
Owner WUHAN GUIDE INFRARED CO LTD