CN111473869A - Infrared human body temperature measurement method - Google Patents
Infrared human body temperature measurement method Download PDFInfo
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- CN111473869A CN111473869A CN202010346798.0A CN202010346798A CN111473869A CN 111473869 A CN111473869 A CN 111473869A CN 202010346798 A CN202010346798 A CN 202010346798A CN 111473869 A CN111473869 A CN 111473869A
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- temperature
- human body
- body temperature
- infrared
- temperature measurement
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000036760 body temperature Effects 0.000 claims abstract description 45
- 230000007613 environmental effect Effects 0.000 claims description 11
- 210000001061 forehead Anatomy 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
- G01J5/0025—Living bodies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/068—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity by controlling parameters other than temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/20—Clinical contact thermometers for use with humans or animals
- G01K13/223—Infrared clinical thermometers, e.g. tympanic
Abstract
The invention discloses an infrared human body temperature measurement method, which comprises the following steps: step 1, acquiring a human body temperature, and performing first compensation on the measured human body temperature according to a first temperature compensation coefficient set by an infrared temperature measurement sensor to obtain a first human body temperature; and 2, obtaining the ambient temperature, and compensating the obtained first human body temperature value for the obtained ambient temperature according to a second temperature compensation coefficient of the set human body temperature changed by the ambient temperature change to obtain the updated second human body temperature. The temperature measurement is automatically calibrated, and the body temperature of a human body is more accurately measured, so that the temperature measurement performance is improved.
Description
Technical Field
The invention relates to the technical field of infrared human body temperature measurement, in particular to an infrared human body temperature measurement method.
Background
The infrared human body temperature measuring equipment is widely applied to the scenes that schools need to recuperate and enterprise parks need to measure body temperature. However, in the using process, the infrared human body temperature measurement sensor faces two problems:
the temperature measurement accuracy of the sensor is influenced by the environmental temperature, for example, the temperature difference between a southern city and a northern city reaches more than 20 ℃, and the temperature difference between morning and noon of the same city is larger, which brings certain difficulty to the accuracy of infrared temperature measurement;
the skin temperature on the surface of a human body is greatly influenced by the environmental temperature, and if the forehead temperature of a person to be measured is generally lower than the forehead temperature in a room in cold wind, the forehead temperature also has certain influence on infrared human body temperature measurement;
in order to solve the problem, a black body module is added as a reference temperature in a feasible method in the industry, the external black body module is arranged, and the infrared temperature measurement sensor automatically corrects and compensates the measured temperature. The disadvantage of this scheme is that the blackbody module is with high costs, and the installation is restricted by the use place, increases the human cost. The method can avoid the influence of different environmental temperatures on the infrared temperature measurement sensor, but cannot avoid the influence of the environmental temperatures on the skin on the surface of the human body.
Therefore, it is necessary to provide an infrared human body temperature measurement method to solve the above problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an infrared human body temperature measurement method for measuring the human body temperature more accurately.
In order to achieve the purpose, the invention adopts the following technical scheme: an infrared human body temperature measurement compensation method comprises the following steps: step 1, acquiring a human body temperature, and performing first compensation on the measured human body temperature according to a first temperature compensation coefficient set by an infrared temperature measurement sensor to obtain a first human body temperature; and 2, obtaining the ambient temperature, and compensating the obtained first human body temperature value for the obtained ambient temperature according to a second temperature compensation coefficient of the set human body temperature changed by the ambient temperature change to obtain the updated second human body temperature.
The first temperature compensation coefficients corresponding to different environmental temperatures are different.
The second temperature compensation coefficient is:
wherein: T1T1+2*T2+……+n*Tn，
The closer to the current temperature measurement time, the heavier the temperature value is.
Compared with the prior art, the infrared human body temperature measurement method has the beneficial effects that: according to a second temperature compensation coefficient of the set human body temperature changed by the change of the environmental temperature, the obtained environmental temperature is compensated for the first human body temperature value to obtain an updated second human body temperature, the measured temperature is automatically calibrated, and the human body temperature is measured more accurately, so that the purpose of improving the temperature measurement performance is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a flow chart of an infrared human body temperature measurement method.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention is an infrared human body temperature measurement method, which includes the steps of:
step 1, acquiring a human body temperature, and performing first compensation on the measured human body temperature according to a first temperature compensation coefficient set by an infrared temperature measurement sensor to obtain a first human body temperature;
the method for setting the first temperature compensation coefficient comprises the following steps: setting human body temperature to T0(ii) a The black body is measured for n times through the infrared temperature measuring sensor, and the temperature is respectively as follows: t is1,T2,T3……TnFor confirming the first temperature compensationA coefficient;
the first temperature compensation coefficient is:
by way of example, at room temperature of 15 °, the black body is set to a temperature T037 deg. and the sensor measures T' 36.38 deg. and β deg. 1.02 deg. and β deg. and the sensor measures T1.02 deg. for forehead of human body at 15 deg. and the temperature compensation coefficient of black body135.9 °, the actual temperature T of the forehead of the human body is T ═ T1*β＝36.6°。
Assuming that the black body temperature is set to 37 °, the temperature of the black body is measured 8 times at different ambient temperatures as follows, and then the first human body temperature compensation coefficient at different ambient temperatures can be determined: for example, the temperature compensation coefficients corresponding to different environmental temperatures are:
| ambient temperature | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Compensation factor |
| 5° | 36.0° | 35.9° | 35.8° | 35.7° | 35.8° | 35.9° | 36° | 35.7° | 1.03 |
| 15° | 36.6° | 36.4° | 36.3° | 36.5° | 36.3° | 36.3° | 36.2° | 36.4° | 1.02 |
| 24° | 37.0° | 37.1° | 37.2° | 36.9° | 36.9° | 37.1° | 37.2° | 36.9° | 1.00 |
| 30° | 37.5° | 37.6° | 37.4° | 37.8° | 37.6° | 37.5° | 37.7° | 37.4° | 0.99 |
Therefore, the first temperature compensation coefficient in the invention dynamically changes according to different environmental temperatures.
Step 2, obtaining an ambient temperature, and compensating the obtained ambient temperature for the obtained first human body temperature value according to a second temperature compensation coefficient of the set human body temperature changed by the ambient temperature change to obtain an updated second human body temperature;
the setting method of the second temperature compensation coefficient comprises the following steps: setting human body temperature to T0，T0The standard value of the human body temperature under a specific environment temperature; for example, at room temperature of 15 degrees, the normal temperature value of the forehead of the human body is T0＝36.5°。
The second temperature compensation coefficient is:
wherein: T1T1+2*T2+……+n*Tn，
Respectively weighting and summing the temperatures of the n persons to serve as reference values of the current human body temperature, wherein the weight of the temperature value closer to the current temperature measurement time is larger, so that the influence of environmental temperature difference in different time periods in the same day is eliminated; therefore, each time the body temperature of a person is detected, the current ambient temperature needs to be determined, and the second temperature compensation coefficient is determined according to the T value obtained at the previous stage of the current temperature, wherein the second temperature compensation coefficient is a dynamic value. Compared with the prior art, the body temperature measuring method is more accurate in order to confirm the body temperature according to different conditions in real time.
Examples are: when n is set to 8;
| times (n) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Weights (δ)n) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 |
When the room temperature is 15 degrees, the temperature compensation coefficient is 1.03, and the first human body temperature obtained by measuring the forehead of the human body through the sensor is T135.4 degrees, the actual temperature T of the forehead of the human body is T1*1.03＝36.46°；
Therefore, the obtained first person body temperature value is automatically calibrated, the body temperature is measured more accurately, and the temperature measurement performance is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (4)
1. An infrared human body temperature measurement method is characterized by comprising the following steps:
step 1, acquiring a human body temperature, and performing first compensation on the measured human body temperature according to a first temperature compensation coefficient set by an infrared temperature measurement sensor to obtain a first human body temperature;
and 2, obtaining the ambient temperature, and compensating the obtained first human body temperature value for the obtained ambient temperature according to a second temperature compensation coefficient of the set human body temperature changed by the ambient temperature change to obtain the updated second human body temperature.
2. The infrared human body temperature measurement method of claim 1, wherein in the step 1, the first temperature compensation coefficients corresponding to different environmental temperatures are different.
3. The infrared human body temperature measurement method of claim 1, wherein in the step 2, the second temperature compensation coefficient is:
wherein: T1T1+2*T2+……+n*Tn，
T0Is a standard value of the body temperature of a human body under a specific environment temperature,nis a weight value.
4. The infrared human body temperature measurement method of claim 3, wherein the weight of the temperature value is larger closer to the current temperature measurement time.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029394A (en) * | 2021-03-09 | 2021-06-25 | 艾体威尔电子技术(北京)有限公司 | Temperature calibration method and system for temperature measurement module |
| CN113218523A (en) * | 2021-05-31 | 2021-08-06 | 浙江大华技术股份有限公司 | Method and device for determining actual body temperature, storage medium and electronic device |
| CN114046884A (en) * | 2021-10-28 | 2022-02-15 | 金陵科技学院 | Automatic temperature compensation system of human body infrared temperature measurement gun |
| CN114061791A (en) * | 2021-11-12 | 2022-02-18 | 歌尔科技有限公司 | Body temperature detection method, system and medium |
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| JP2011075365A (en) * | 2009-09-30 | 2011-04-14 | Tdk Corp | Infrared temperature sensor |
| CN102147835A (en) * | 2010-11-26 | 2011-08-10 | 中华人民共和国深圳出入境检验检疫局 | Driver body temperature automatic measurement system applied to port lanes and implementation method thereof |
| CN105571722A (en) * | 2015-12-23 | 2016-05-11 | 深圳市金立通信设备有限公司 | Temperature measuring method and terminal |
| CN208076036U (en) * | 2018-05-11 | 2018-11-09 | 武汉轻工大学 | A kind of infrared survey thermometer |
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- 2020-04-28 CN CN202010346798.0A patent/CN111473869B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011075365A (en) * | 2009-09-30 | 2011-04-14 | Tdk Corp | Infrared temperature sensor |
| CN102147835A (en) * | 2010-11-26 | 2011-08-10 | 中华人民共和国深圳出入境检验检疫局 | Driver body temperature automatic measurement system applied to port lanes and implementation method thereof |
| CN105571722A (en) * | 2015-12-23 | 2016-05-11 | 深圳市金立通信设备有限公司 | Temperature measuring method and terminal |
| CN208076036U (en) * | 2018-05-11 | 2018-11-09 | 武汉轻工大学 | A kind of infrared survey thermometer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029394A (en) * | 2021-03-09 | 2021-06-25 | 艾体威尔电子技术(北京)有限公司 | Temperature calibration method and system for temperature measurement module |
| CN113218523A (en) * | 2021-05-31 | 2021-08-06 | 浙江大华技术股份有限公司 | Method and device for determining actual body temperature, storage medium and electronic device |
| CN113218523B (en) * | 2021-05-31 | 2024-04-16 | 浙江华感科技有限公司 | Method and device for determining actual body temperature, storage medium and electronic device |
| CN114046884A (en) * | 2021-10-28 | 2022-02-15 | 金陵科技学院 | Automatic temperature compensation system of human body infrared temperature measurement gun |
| CN114061791A (en) * | 2021-11-12 | 2022-02-18 | 歌尔科技有限公司 | Body temperature detection method, system and medium |
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