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A portable infrared thermometer for continuous monitoring and its temperature compensation method

A thermometer and portable technology, applied in the field of thermometers, can solve the problems of discomfort and inability to use stickers for a long time, and achieve the effects of accurate measurement, reliable temperature correction algorithm, and low cost

Active Publication Date: 2018-09-18
BEIJING YIDU MATRIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two fixation methods will bring discomfort to users, especially infant users, whose skin is tender and sensitive, so it is not possible to use the stickers for a long time

Method used

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  • A portable infrared thermometer for continuous monitoring and its temperature compensation method
  • A portable infrared thermometer for continuous monitoring and its temperature compensation method
  • A portable infrared thermometer for continuous monitoring and its temperature compensation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] By fitting the experimental data, the function T=F(△T,T 1 ) specific expression form. In this embodiment, when the distance difference between the front and back of the two infrared sensors is 3mm, and the distance between the left and right is 7mm, T=F(△T,T 1 ) approximate expression.

[0044] Experimental calibration: During the test, a constant temperature black body radiation heat source is used to simulate the human body, and the temperature of the black body radiation heat source is set to T 0 (T 0 =35, 35.5, 36...40) degrees, fix the temperature measuring end on the guide rail, measure the temperature difference ΔT of the two sensors and the temperature indication T of the first temperature measuring unit at different distances 1 .

[0045] After data analysis, it is found that the value to be compensated (T 0 -T 1 ) has an approximate linear relationship with the temperature difference between the two sensors, the result is as follows Figure 7 As shown, ...

Embodiment 2

[0062] There is no need for specific function expressions, and T and △T and T can be obtained directly through experimental calibration. 1 The corresponding relationship, listed as a table:

[0063]

[0064] Through calibration, after obtaining the above table, for any temperature within the measurement range, by measuring T 1 and △T, and then look up the table to get the actual temperature. It can be seen from the above table that the calibration error accuracy depends on the accuracy of the calibration table, and only a sufficiently subdivided calibration table can give sufficient correction accuracy. Therefore, the data volume of the calibration measurement will be very large, and due to space limitations, only a part of the rough test sample table is given here. However, the advantage of this solution is that it avoids the error caused by the mathematical approximation in Example 1, and transforms the precision control of the error into the subdivision of the operable...

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Abstract

The invention discloses a portable infrared thermometer for continuous monitoring and a temperature compensation method thereof. The portable infrared thermometer for continuous monitoring comprises two parts: a hardware structure and a temperature compensation algorithm. The hardware structure comprises two infrared sensors that are in near-far staggered placement relative to a thermometer main body, a master control circuit, a power module, a bluetooth transmission unit and other accessories. The longitudinal distance difference between the two infrared sensors is 2mm-8mm, and the distance between the left and the right is 5mm-15mm. The temperature compensation algorithm is mainly directed at the error caused by measuring distance, and determines a temperature correction value according to the measured value of the infrared sensors and the difference of two fore-and-aft staggered sensors. The portable infrared thermometer for continuous monitoring provided by the invention has the function of non-contact continuous measurement of human body temperature, by means of unique two-sensor staggered arrangement and corresponding algorithm correction, the error between the obtained temperature and actual temperature is less than 0.1DEG C, thus meeting the demand of medical temperature measurement. At the same time, the portable infrared thermometer for continuous monitoring also has the advantages of portability and small size, fast temperature measurement, continuous monitoring, and simple structure, etc.

Description

technical field [0001] The invention relates to the technical field of thermometers, in particular to a portable infrared thermometer for continuous monitoring and a temperature compensation method thereof. Background technique [0002] All objects with a temperature higher than absolute zero are constantly emitting infrared radiation energy to the surrounding space. The distribution of infrared radiation energy according to the wavelength has a very close relationship with its surface temperature. Measurement can accurately measure its surface temperature. With the development of modern technology, infrared temperature measurement technology is becoming more and more perfect, and gradually penetrates into various fields. The development of new infrared temperature measurement technology and the improvement of the performance of the infrared temperature measurement system are the requirements of the development of the times. [0003] For a long time, body temperature has b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/01
CPCA61B5/01
Inventor 宗华杨健付建波陈华健
Owner BEIJING YIDU MATRIX TECH CO LTD
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