CN111473888B - Thermometer and method for calculating core body temperature based on wrist body temperature - Google Patents
Thermometer and method for calculating core body temperature based on wrist body temperature Download PDFInfo
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- CN111473888B CN111473888B CN202010440247.0A CN202010440247A CN111473888B CN 111473888 B CN111473888 B CN 111473888B CN 202010440247 A CN202010440247 A CN 202010440247A CN 111473888 B CN111473888 B CN 111473888B
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- body temperature
- axis
- thermometer
- wrist
- temperature sensor
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
Abstract
The invention discloses a method for measuring wrist body temperature by using a thermometer and obtaining core body temperature in vivo after calculation. The invention has the following advantages and effects: the wrist is measured through fixation, and the body temperature of the core position of the human body can be obtained after calculation according to the second law of thermodynamics, so that the measurement result is more accurate.
Description
Technical Field
The invention relates to the technical field of body temperature measurement methods, in particular to a thermometer and a method for calculating core body temperature based on wrist body temperature.
Background
The existing body temperature measurement products can only measure the body surface temperature generally, but the body temperature difference measured is also large due to the fact that the body surface temperature is greatly influenced by different positions and environments of the body surface, and large errors are easily caused.
Disclosure of Invention
The invention aims to provide a thermometer and a calculation method for predicting the core body temperature of a human body based on the body temperature of a wrist so as to ensure the accuracy of body temperature measurement.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a thermometer, includes the circuit board, and the circuit board lower surface is provided with body temperature sensor T1, and the circuit board upper surface is provided with body temperature sensor T2, and the other end that body temperature sensor T2 was kept away from to the circuit board upper surface is provided with the heater of switch.
Further setting the following steps: the method is characterized in that: the thermometer has an x-axis, a y-axis, and a z-axis, the thermal resistance of the x-axis and the y-axis being greater than the thermal resistance of the z-axis.
The invention also discloses a method for calculating the core body temperature based on the wrist body temperature, which comprises the following steps of firstly, measuring the temperature of the body temperature sensor T1 and the temperature of the body temperature sensor T2 through a thermometer, and recording the temperatures as T1 and T2; step two, assuming that the equivalent thermal resistance from the body to the skin surface is Rs and the equivalent thermal resistance between the z axes of the two sensors is R1; step three, according to the second law of thermodynamics
Turning on or off the heater, and calculating the heat balance of the heater after it is turned on
And calculating the state of the heater in the state of reaching the thermal equilibrium after the heater is turned off
And step four, simultaneously establishing an equation (2) and an equation (3) to solve the core body temperature TD.
Further setting the following steps: in step three, both T1 and T2 are values at thermal equilibrium.
Further setting the following steps: in step one, T1 and T2 may take on consecutive values.
In conclusion, the invention has the following beneficial effects: the wrist is measured through fixation, and the body temperature of the core position of the human body can be obtained after calculation according to the second law of thermodynamics, so that the measurement result is more accurate.
Drawings
FIG. 1 is a schematic flow chart of a core body temperature calculation method;
fig. 2 is a schematic diagram of the use of the thermometer.
In the figure: 1. a circuit board; 2. a body temperature sensor T1; 3. a body temperature sensor T2; 4. a heater; 5. skin; 6. in vivo.
Detailed Description
The present invention is described in further detail below with reference to fig. 1 and 2.
The utility model provides a thermometer, this thermometer is exclusively used in and carries out the temperature measurement to the wrist, includes circuit board 1, and when the thermometer used, circuit board 1 pressed close to 5 one sides of skin and is the lower surface, and the opposite side is the upper surface. The lower surface is provided with a body temperature sensor T12, and the upper surface of the circuit board 1 is provided with a body temperature sensor T23. When the thermometer is used, data detected by the body temperature sensor T12 is denoted as T1, and data detected by the body temperature sensor T23 is denoted as T2. The other end of the upper surface of the circuit board 1 far away from the body temperature sensor T23 is provided with a switchable heater 4.
The thermometer has an x-axis, a y-axis, and a z-axis, and the thermal resistance in the x-axis and the y-axis of the thermometer is greater than the thermal resistance in the z-axis.
A method for calculating a core body temperature based on a wrist body temperature includes
Firstly, measuring a body temperature sensor T1 and a body temperature sensor T2 by using the thermometer to obtain readings T1 and T2;
step two, assuming that the equivalent thermal resistance from the body to the skin surface is Rs; let the equivalent thermal resistance between the z-axes of the two sensors be R1;
step three, according to the second law of thermodynamics
By calculation
To obtain
And
thereby calculating the heat balance state of the heater after being turned on
And calculating the heat balance state after the heater is turned off
Wherein, the processes of turning on the heater and turning off the heater can be interchanged;
and step four, combining the equation (2) and the equation (3), and eliminating the supposed Rs and R1 in the substitution process so as to solve the core body temperature TD. The T1 and the T2 can be continuously valued, so that the average number is continuously solved, and the data error is smaller.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (3)
1. A method for calculating a core body temperature based on a wrist body temperature is characterized in that: comprises the following steps of (a) carrying out,
step one, measuring the temperature of a body temperature sensor T1 and the temperature of a body temperature sensor T2 through a thermometer, and recording the temperatures as T1And T2The thermometer comprises a circuit board, a body temperature sensor T1 is arranged on the lower surface of the circuit board, a body temperature sensor T2 is arranged on the upper surface of the circuit board, a switchable heater is arranged at the other end, far away from the body temperature sensor T2, of the upper surface of the circuit board, the thermometer is provided with an x axis, a y axis and a z axis, and the thermal resistance of the x axis and the y axis is larger than that of the z axis;
step two, assuming that the equivalent thermal resistance from the body to the skin surface is Rs and the equivalent thermal resistance between the z-axis of the two sensors is R1；
Step three, turning on or off the heater according to the second law of thermodynamics
Respectively calculate
At the state of thermal equilibrium after the heater is turned on
At the state of thermal equilibrium after the heater is turned off
And step four, simultaneously establishing an equation (2) and an equation (3) to solve the core body temperature Td.
2. The method of calculating a core body temperature based on a wrist body temperature of claim 1, wherein: in step three, T1And T2All values are at thermal equilibrium.
3. The method of calculating a core body temperature based on a wrist body temperature of claim 1, wherein: in step one, T1And T2Values can be taken continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440247.0A CN111473888B (en) | 2020-05-22 | 2020-05-22 | Thermometer and method for calculating core body temperature based on wrist body temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440247.0A CN111473888B (en) | 2020-05-22 | 2020-05-22 | Thermometer and method for calculating core body temperature based on wrist body temperature |
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| Publication Number | Publication Date |
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| CN111473888A CN111473888A (en) | 2020-07-31 |
| CN111473888B true CN111473888B (en) | 2021-12-10 |
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| CN202010440247.0A Active CN111473888B (en) | 2020-05-22 | 2020-05-22 | Thermometer and method for calculating core body temperature based on wrist body temperature |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548934A (en) * | 2003-05-07 | 2004-11-24 | 刘正洪 | Temperature sensor, its temperature detecting circuit and method |
| CN102378905A (en) * | 2009-04-06 | 2012-03-14 | 皇家飞利浦电子股份有限公司 | A temperature sensor for body temperature measurement |
| CN104523243A (en) * | 2014-12-23 | 2015-04-22 | 金陵科技学院 | Body temperature acquisition device |
| EP3064917A1 (en) * | 2015-03-06 | 2016-09-07 | Seiko Epson Corporation | Temperature measurement apparatus and temperature measurement method |
| CN110094845A (en) * | 2019-05-24 | 2019-08-06 | 广东电网有限责任公司 | A kind of force control method, device and the equipment out of room temperature adjustment equipment |
| CN110402100A (en) * | 2017-03-14 | 2019-11-01 | M·哈伯 | Mthods, systems and devices for non-invasive core body temperature monitoring |
| CN110840416A (en) * | 2019-11-01 | 2020-02-28 | 江苏大学 | Non-invasive human body core temperature detection probe and method |
-
2020
- 2020-05-22 CN CN202010440247.0A patent/CN111473888B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548934A (en) * | 2003-05-07 | 2004-11-24 | 刘正洪 | Temperature sensor, its temperature detecting circuit and method |
| CN102378905A (en) * | 2009-04-06 | 2012-03-14 | 皇家飞利浦电子股份有限公司 | A temperature sensor for body temperature measurement |
| CN104523243A (en) * | 2014-12-23 | 2015-04-22 | 金陵科技学院 | Body temperature acquisition device |
| EP3064917A1 (en) * | 2015-03-06 | 2016-09-07 | Seiko Epson Corporation | Temperature measurement apparatus and temperature measurement method |
| CN110402100A (en) * | 2017-03-14 | 2019-11-01 | M·哈伯 | Mthods, systems and devices for non-invasive core body temperature monitoring |
| CN110094845A (en) * | 2019-05-24 | 2019-08-06 | 广东电网有限责任公司 | A kind of force control method, device and the equipment out of room temperature adjustment equipment |
| CN110840416A (en) * | 2019-11-01 | 2020-02-28 | 江苏大学 | Non-invasive human body core temperature detection probe and method |
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| CN111473888A (en) | 2020-07-31 |
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Effective date of registration: 20200825 Address after: Room 1005-3, building 15, No. 57, kekeyuan Road, Baiyang street, Qiantang New District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou Planning Intelligent Technology Co., Ltd Address before: 310000 436-13 Beitang Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Applicant before: Zhejiang Wui Technology Co.,Ltd. |
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