CN113125014A - Infrared body temperature measuring method, electronic equipment and readable storage medium - Google Patents
Infrared body temperature measuring method, electronic equipment and readable storage medium Download PDFInfo
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- 230000036760 body temperature Effects 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 29
- 238000004590 computer program Methods 0.000 claims description 23
- 210000001061 forehead Anatomy 0.000 claims description 14
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 238000004861 thermometry Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 description 19
- 230000006870 function Effects 0.000 description 13
- 238000004422 calculation algorithm Methods 0.000 description 10
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- 238000005259 measurement Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
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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
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/163—Wearable computers, e.g. on a belt
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
Abstract
The invention provides an infrared body temperature measuring method, electronic equipment and a readable storage medium, which comprise the following steps: acquiring the ambient temperature around a target human body as the external ambient temperature; measuring the surface temperature of a target human body by using an infrared temperature sensor as the surface temperature of the human body; measuring an ambient temperature around the infrared temperature sensor with an internal temperature sensor as an internal ambient temperature; and calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature. According to the invention, the problem that the temperature rise of the whole electronic equipment affects the accuracy of infrared body temperature measurement is solved by accurately acquiring the external environment temperature.
Description
Technical Field
The invention relates to the technical field of body temperature testing, in particular to an infrared body temperature testing method, electronic equipment and a readable storage medium.
Background
In recent years, as people pay more attention to medical health, the demand of consumers for convenient and fast body temperature measurement is stronger, wherein the use of an infrared temperature sensor for detecting the body temperature is one of the mainstream schemes in the market at present.
In nature, any object with a certain temperature continuously emits infrared radiation energy to the surrounding space. The magnitude of the infrared radiation energy of an object is closely related to the surface temperature of the object. By measuring the infrared energy radiated by the object itself, the surface temperature thereof can be accurately determined.
Generally, an infrared Temperature measuring device includes an infrared Temperature sensor, and also includes an NTC Temperature sensor (NTC, an abbreviation of Negative Temperature Coefficient) or a PN junction Temperature sensor (PTAT, a semiconductor sensor, in which a junction voltage of a PN junction of a transistor diode or a transistor changes with Temperature) disposed close to the infrared Temperature sensor to measure an ambient Temperature around the infrared Temperature sensor, and the ambient Temperature is used as a reference Temperature. And obtaining the surface temperature of the object according to the measured infrared radiation energy of the object and the reference temperature.
The human body temperature is relatively and steady under normal conditions, and human body surface temperature changes along with ambient temperature, and human skin is heated can be higher than actual temperature under the high temperature, and human skin receives the influence of cold gas can be lower than actual temperature when low temperature, so human body surface temperature and ambient temperature have stronger relevance.
In order to ensure the accuracy of the measured body temperature, the ambient temperature is required to correct the surface temperature of the human body. When the cavity temperature of the infrared temperature sensor measured by the NTC/PTAT in the infrared temperature measuring device is consistent with the external environment temperature, the temperature measured by the NTC/PTAT can be simultaneously used as the external environment temperature to correct the surface temperature of the human body, so that the accuracy of final body temperature measurement is ensured.
However, when the infrared temperature measuring device is built in an electronic device which can generate heat during use, such as a smart phone and a smart wearable device, and when the overall heat productivity of the electronic device is large, the temperature value measured by the NTC/PTAT in the infrared temperature measuring device can only be used as the ambient temperature around the infrared temperature sensor and cannot represent the ambient temperature around a human body, so that the accuracy of the infrared body temperature measurement value of the electronic device can be affected by the overall temperature rise of the electronic device.
Disclosure of Invention
The invention aims to provide an infrared body temperature measuring method, electronic equipment and a readable storage medium, which are used for solving the problem that the accuracy of infrared body temperature measurement of the electronic equipment is influenced by the temperature rise of the whole electronic equipment.
The technical scheme provided by the invention is as follows:
an infrared body temperature measuring method is applied to electronic equipment comprising an infrared temperature sensor, and comprises the following steps: acquiring the ambient temperature around a target human body as the external ambient temperature; measuring the surface temperature of a target human body by using the infrared temperature sensor as the surface temperature of the human body; measuring an ambient temperature around the infrared temperature sensor with an internal temperature sensor as an internal ambient temperature; and calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
Further, the acquiring an ambient temperature around the target human body as an external ambient temperature includes: and measuring the temperature of an object around the target human body by using the infrared temperature sensor as the external environment temperature.
Further, the object around the target human body comprises one of the following: air, table, wall, floor.
Further, the measuring the temperature of the object around the target human body with the infrared temperature sensor as the external environment temperature includes: selecting a target object from around a target human body; measuring the temperature of the target object by using the infrared temperature sensor to obtain at least one measured value; and processing the at least one measured value to obtain the external environment temperature.
Further, the electronic equipment is a smart phone or smart wearable equipment.
Further, the measuring of the surface temperature of the target human body with the infrared temperature sensor as the human body surface temperature includes: and measuring the forehead temperature of the target human body by using the infrared temperature sensor as the surface temperature of the human body.
The present invention also provides an electronic device comprising: infrared temperature sensor and inside temperature sensor still include: the external environment temperature acquisition module is used for acquiring the ambient temperature around the target human body as the external environment temperature; the human body surface temperature acquisition module measures the surface temperature of a target human body by using the infrared temperature sensor as the human body surface temperature; an internal ambient temperature acquisition module for measuring the ambient temperature around the infrared temperature sensor by using the internal temperature sensor as the internal ambient temperature; and the human body temperature calculation module is used for calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
Further, the external environment temperature acquisition module measures the temperature of an object around the target human body by using the infrared temperature sensor as the external environment temperature.
The present invention also provides an electronic device comprising: a memory for storing a computer program; and the processor is used for realizing the infrared body temperature measuring method when the computer program is run.
The present invention also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the aforementioned method for infrared body temperature measurement.
The infrared body temperature measuring method, the electronic device and the readable storage medium provided by the invention can bring the following beneficial effects:
1. according to the invention, by acquiring the external environment temperature, the problem that the accuracy of infrared body temperature measurement of the electronic equipment is influenced by the complete machine temperature rise of the electronic equipment is solved.
2. According to the invention, the surface temperature of the air or other objects around the human body is directly measured by the infrared temperature sensor to serve as the external environment temperature, and the ambient temperature of the human body can be accurately measured without externally hanging the NTC, so that the problem that the accuracy of infrared body temperature measurement of a smart phone or smart wearable device is influenced by the temperature rise of the whole smart phone or smart wearable device is solved.
3. According to the invention, the infrared temperature sensor is used for measuring the ambient temperature, the traditional method of measuring the ambient temperature by using an NTC is replaced, the space and the cost are saved, the structural design and the mass production of the smart phone and the smart wearable device are facilitated, and the method is particularly suitable for smart wearable products such as a smart bracelet and a smart watch.
Drawings
The above features, technical features, advantages and implementation manners of the method for measuring body temperature by infrared rays, the electronic device, and the readable storage medium will be further described in the following detailed description of preferred embodiments in a clearly understandable manner and with reference to the accompanying drawings.
FIG. 1 is a flow chart of one embodiment of a method of infrared body temperature measurement of the present invention;
FIG. 2 is a flow chart of another embodiment of a method of infrared body temperature measurement of the present invention;
FIG. 3 is a schematic diagram of an electronic device according to an embodiment of the invention;
FIG. 4 is a schematic diagram of another embodiment of an electronic device of the present invention;
FIG. 5 is a schematic diagram of another embodiment of an electronic device of the present invention;
the reference numbers illustrate:
100. the human body temperature acquisition system comprises an external environment temperature acquisition module 200, a human body surface temperature acquisition module 300, an internal environment temperature acquisition module 400, a human body temperature calculation module 500, an infrared temperature sensor 600, an internal temperature sensor 21, a memory 22, a processor 23 and a computer program.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
In one embodiment of the present invention, as shown in fig. 1, a method for measuring body temperature by infrared is applied to an electronic device including an infrared temperature sensor, and includes:
step S100, acquiring the ambient temperature around a target human body as the external ambient temperature;
step S200, measuring the surface temperature of a target human body by using an infrared temperature sensor as the surface temperature of the human body;
step S300, measuring the ambient temperature around the infrared temperature sensor by using an internal temperature sensor as the internal ambient temperature;
and step S400, calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
Specifically, the infrared temperature sensor is integrated in an electronic device, so that the electronic device has a function of measuring the body temperature of the human body based on an infrared technology.
This electronic equipment is non single function equipment, and can generate heat in non-body temperature measuring's use, and the temperature is probably changed great in the equipment under the condition that external environment temperature is unchangeable basically promptly, for example terminal equipment such as medical equipment, smart mobile phone, intelligent bracelet, intelligent wrist-watch of integrated multiple sign index test. For example, when a user plays a game, or watches a movie, or calls with a smart phone, the longer the activity time is, the higher the temperature of the smart phone becomes, and even the user can feel the smart phone hot.
The temperature of the infrared temperature sensor integrated inside the mobile phone is increased due to the overall temperature rise inside the mobile phone, so that the temperature measured by the internal temperature sensors such as the internal NTC/PTAT and the like can only be used as the ambient temperature around the infrared temperature sensor, and cannot represent the ambient temperature around the human body (i.e., the external ambient temperature). Therefore, if the body temperature of the human body is tested at the moment, the measured body temperature deviation is larger by adopting the traditional infrared temperature measurement technology.
One way is to let the heat generating electronic device cool down gradually by heat exchange with the external environment; and when the internal temperature of the electronic equipment is consistent with the external environment temperature, testing the body temperature of the human body. Therefore, the traditional infrared temperature measurement technology can be continuously adopted, and the temperature measured by the internal temperature sensor can simultaneously represent the ambient temperature of the human body.
However, the operation mode needs a certain delay, the delay time is indefinite, the influence of the temperature rise degree of the whole machine is caused, the user experience is not good, and the requirement of measuring the body temperature of the user at any time and any place can not be met.
An alternative embodiment is to add a sensor, such as an NTC or PTAT, inside the electronic device for measuring the temperature of the external environment, which is located as far away from the heat source inside the electronic device as possible from the external environment. However, the new devices are added, the requirement of space deployment is increased, and the device is suitable for electronic equipment with unlimited volume.
Another alternative embodiment is to use an infrared temperature sensor to measure the temperature of objects around the target human body as the external ambient temperature. Therefore, new devices are not needed, the difficulty of structural design is not increased, and the portable electronic device is particularly suitable for limited portable electronic devices such as smart bracelets and smart phones with the same volume.
After the external ambient temperature is acquired, the surface temperature of the target human body is then measured with an infrared temperature sensor as the human body surface temperature. The surface temperature of the human body can be tested firstly, and then the external environment temperature is obtained, and the two operation sequences are not limited.
The ambient temperature around the infrared temperature sensor is measured with an internal temperature sensor as the internal ambient temperature. Optionally, the internal temperature sensor is a contact temperature sensor such as an NTC temperature sensor or a PN junction temperature sensor.
The internal environment temperature reflects the self temperature of the infrared temperature sensor in the electronic equipment, and is the result after the temperature rise of the whole electronic equipment is influenced. The temperature of the infrared temperature sensor itself is increased to cause the infrared radiation energy radiated by the infrared temperature sensor itself to change, and the change can also influence the infrared radiation energy of other objects measured by the infrared temperature sensor.
In order to enable the infrared temperature sensor to have stronger thermal shock resistance and further ensure the accuracy of the measured value of the infrared temperature sensor, the infrared temperature sensor can be arranged at a position far away from a heat source of the electronic device, and a metal sleeve is embedded in the direction opposite to the receiving view field of the infrared temperature sensor.
And calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature. One method is as follows:
correcting the external environment temperature by using the internal environment temperature to obtain more accurate external environment temperature; correcting the surface temperature of the human body measured by the infrared temperature sensor by using the internal environment temperature to obtain accurate surface temperature of the human body; and then compensating the corrected surface temperature of the human body by the corrected external environment temperature to obtain the accurate body temperature of the human body.
Optionally, a plurality of sets of sample data are obtained, where each set of sample data includes a surface temperature, an internal environment temperature, and an external environment temperature of a human body measured by a tester under a certain scene, and an actual body temperature of the human body measured by a conventional thermometer (for example, obtained by an axillary temperature of the human body). And constructing a human body temperature calculation model by adopting a machine learning algorithm according to all sample data.
When the human body temperature measuring device is applied, the measured ambient temperature of the target human body, the measured surface temperature of the human body and the measured internal ambient temperature of the electronic equipment are input into the human body temperature calculation model, and therefore the temperature value of the target human body is obtained.
The machine learning algorithm may include at least one of: classification algorithms, clustering algorithms, regression algorithms, and deep learning algorithms, although embodiments of the invention are not limited in this respect.
And finally, the calculated body temperature can be presented to the user through a display screen of the electronic equipment.
According to the embodiment, the problem that the temperature rise of the whole electronic equipment affects the accuracy of infrared body temperature measurement of the electronic equipment is solved by accurately acquiring the external environment temperature.
In one embodiment of the present invention, as shown in fig. 2, a method for measuring body temperature by infrared is applied to an electronic device including an infrared temperature sensor, and includes:
step S110, measuring the temperature of an object around a target human body by using an infrared temperature sensor as an external environment temperature;
step S210, measuring the forehead temperature of a target human body by using an infrared temperature sensor as the surface temperature of the human body;
step S300, measuring the ambient temperature around the infrared temperature sensor by using an internal temperature sensor as the internal ambient temperature;
and step S400, calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
Specifically, the present embodiment measures the temperature of an object around the target human body with an infrared temperature sensor as the external ambient temperature.
Optionally, selecting a target object from around the target human body; measuring the temperature of the target object by using an infrared temperature sensor to obtain at least one measured value; and processing the at least one measured value to obtain the external environment temperature.
The target object needs to be in the vicinity of the target human body, and its surface temperature can represent the ambient temperature around the target human body. The target object may be one of the following: air, table, wall, floor. The infrared radiation coefficient of these objects is usually close to 1, and objects with the infrared radiation coefficient larger than a preset threshold (such as 95%) are recommended as the target objects.
The infrared radiation coefficient of the object can be obtained by inquiring empirical data. The infrared radiation coefficients of different objects are different, and if the infrared radiation coefficient of the target object is much smaller than 1, for example, 0.5, the measured surface temperature of the object needs to be further corrected according to the infrared radiation coefficient of the target object.
To ensure the accuracy of the body temperature measurement, the user is advised to use the recommended target object type.
Preferably, the infrared temperature sensor is used to measure the target object a plurality of times in succession, and the obtained plurality of measured values are processed, for example, simply averaged, to take the average value as the ambient temperature around the human body, i.e., the external ambient temperature. For another example, the maximum and minimum values are eliminated, and then averaged, and the average value is taken as the external environment temperature.
The infrared temperature sensor measures temperature in a non-contact manner, and generally needs to measure temperature at a certain distance from a measured part of an object.
In order to reduce the measurement error, the distance between the measured part and the infrared temperature sensor is a calibrated distance value, the distance can be positioned and limited by the structure of the shell of the electronic equipment, or the calibration position is prompted by a prompting device, so that the measurement accuracy is effectively improved.
For example, if the electronic device is a smart phone, the calibrated distance value can be limited by the thickness of the smart phone, so that the smart phone can be attached to the surface of an object to perform infrared temperature measurement, and the operation of a user is facilitated.
The present embodiment measures the forehead temperature of a target human body as a human body surface temperature using an infrared temperature sensor.
In order to accurately measure the forehead temperature, the forehead temperature needs to be measured towards the middle of the forehead, the distance is 3-5 cm, hair or ornaments cannot be shielded in the middle of the forehead, and otherwise the accuracy of temperature measurement can be influenced. Or carrying out a plurality of continuous rated temperature tests, and obtaining the average value of a plurality of measured values as the rated temperature.
In the embodiment, the surface temperature of the air or other objects around the human body is directly measured by the infrared temperature sensor as the ambient temperature, so that when the temperature of the cavity where the infrared temperature sensor is located is inconsistent with the temperature of the external environment, the ambient temperature of the human body can be accurately measured without externally hanging the NTC, and a more accurate body temperature can be obtained.
Because the external NTC is not needed, the space and the cost are saved, the difficulties of structural design and complete machine assembly of electronic equipment such as an intelligent terminal are solved, and particularly, the intelligent wearable product has the advantages of strict constraint on the appearance size, small size, high waterproof requirement and high portability requirement.
In addition, the infrared temperature sensor is used for replacing the traditional NTC method for measuring the environment temperature, so that the cost is saved, and the electronic equipment with the infrared temperature measurement function has the possibility of actual mass production.
In one embodiment of the present invention, as shown in fig. 3, an electronic device 10a includes an infrared temperature sensor 500, an internal temperature sensor 600, and further includes:
an external ambient temperature acquisition module 100 that acquires an ambient temperature around a target human body as an external ambient temperature;
a human body surface temperature acquisition module 200 for measuring the surface temperature of the target human body as the human body surface temperature by using the infrared temperature sensor 500;
an internal ambient temperature acquisition module 300 that measures an ambient temperature around the infrared temperature sensor as an internal ambient temperature with the internal temperature sensor 600;
and the human body temperature calculating module 400 is used for calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
Specifically, the infrared temperature sensor 500 is integrated inside the electronic device 10a, so that the electronic device has a function of measuring the body temperature based on the infrared technology.
This electronic equipment is non single function equipment, and can generate heat in non-body temperature measuring's use, and the temperature is probably changed great in the equipment under the condition that external environment temperature is unchangeable basically promptly, for example terminal equipment such as medical equipment, smart mobile phone, intelligent bracelet, intelligent wrist-watch of integrated multiple sign index test.
The temperature rise of the whole mobile phone interior may cause the temperature of the infrared temperature sensor integrated in the mobile phone to rise, so that the temperature measured by the internal temperature sensor 600 such as the internal NTC/PTAT can only be used as the ambient temperature around the infrared temperature sensor, and cannot represent the ambient temperature around the human body (i.e. the external ambient temperature). Therefore, if the body temperature of the human body is tested at the moment, the measured body temperature deviation is larger by adopting the traditional infrared temperature measurement technology.
One way is to let the heat generating electronic device cool down gradually by heat exchange with the external environment; and when the internal temperature of the electronic equipment is consistent with the external environment temperature, testing the body temperature of the human body. Therefore, the traditional infrared temperature measurement technology can be continuously adopted, and the temperature measured by the internal temperature sensor can simultaneously represent the ambient temperature of the human body.
However, the operation mode needs a certain delay, the delay time is indefinite, the influence of the temperature rise degree of the whole machine is caused, the user experience is not good, and the requirement of measuring the body temperature of the user at any time and any place can not be met.
Another solution is to add a sensor for measuring the temperature of the external environment, such as an NTC, inside the electronic device, which needs to be as close to the external environment as possible and far from the heat source inside the electronic device. However, the new devices are added, the requirement of space deployment is increased, and the device is suitable for electronic equipment with unlimited volume.
Another alternative embodiment is to use an infrared temperature sensor to measure the temperature of objects around the target human body as the external ambient temperature. Therefore, new devices are not needed, the difficulty of structural design is not increased, and the portable electronic device is particularly suitable for limited portable electronic devices such as smart bracelets and smart phones with the same volume.
After the external ambient temperature is acquired, the surface temperature of the target human body is then measured with an infrared temperature sensor as the human body surface temperature. The surface temperature of the human body can be tested firstly, and then the external environment temperature is obtained, and the two operation sequences are not limited.
The ambient temperature around the infrared temperature sensor is measured with an internal temperature sensor as the internal ambient temperature. Optionally, the internal temperature sensor is a contact temperature sensor such as an NTC temperature sensor or a PN junction temperature sensor.
The internal environment temperature reflects the self temperature of the infrared temperature sensor in the electronic equipment, and is the result after the temperature rise of the whole electronic equipment is influenced. The temperature of the infrared temperature sensor itself is increased to cause the infrared radiation energy radiated by the infrared temperature sensor itself to change, and the change can also influence the infrared radiation energy of other objects measured by the infrared temperature sensor.
In order to enable the infrared temperature sensor to have stronger thermal shock resistance and further ensure the accuracy of the measured value of the infrared temperature sensor, the infrared temperature sensor can be arranged at a position far away from a heat source of the electronic device, and a metal sleeve is embedded in the direction opposite to the receiving view field of the infrared temperature sensor.
And calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature. One method is as follows:
correcting the external environment temperature by using the internal environment temperature to obtain more accurate external environment temperature; correcting the surface temperature of the human body measured by the infrared temperature sensor by using the internal environment temperature to obtain accurate surface temperature of the human body; and then compensating the corrected surface temperature of the human body by the corrected external environment temperature to obtain the accurate body temperature of the human body.
Optionally, a plurality of sets of sample data are obtained, where each set of sample data includes a surface temperature, an internal environment temperature, and an external environment temperature of a human body measured by a tester under a certain scene, and an actual body temperature of the human body measured by a conventional thermometer (for example, obtained by an axillary temperature of the human body). And constructing a human body temperature calculation model by adopting a machine learning algorithm according to all sample data.
When the human body temperature measuring device is applied, the measured ambient temperature of the target human body, the measured surface temperature of the human body and the measured internal ambient temperature of the electronic equipment are input into the human body temperature calculation model, and therefore the temperature value of the target human body is obtained.
The machine learning algorithm may include at least one of: classification algorithms, clustering algorithms, regression algorithms, and deep learning algorithms, although embodiments of the invention are not limited in this respect.
Optionally, the electronic device 10a includes a display screen for presenting the calculated body temperature to the user.
According to the embodiment, the problem that the temperature rise of the whole electronic equipment affects the accuracy of infrared body temperature measurement of the electronic equipment is solved by accurately acquiring the external environment temperature.
In one embodiment of the present invention, as shown in fig. 4, an electronic device 10b includes an infrared temperature sensor 500, an internal temperature sensor 600, and further includes:
an external environment temperature acquisition module 100 for measuring the temperature of an object around a target human body as an external environment temperature by using an infrared temperature sensor 500;
a human body surface temperature acquisition module 200 for measuring the forehead temperature of the target human body by using an infrared temperature sensor 500 as the human body surface temperature;
an internal ambient temperature acquisition module 300 that measures an ambient temperature around the infrared temperature sensor as an internal ambient temperature with the internal temperature sensor 600;
and the human body temperature calculating module 400 is used for calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
Specifically, the present embodiment measures the temperature of an object around the target human body as the external ambient temperature with the infrared temperature sensor 500.
Optionally, selecting a target object from around the target human body; measuring the temperature of the target object with an infrared temperature sensor 500 to obtain at least one measurement value; and processing the at least one measured value to obtain the external environment temperature.
The target object needs to be in the vicinity of the target human body, and its surface temperature can represent the ambient temperature around the target human body. The target object may be one of the following: air, table, wall, floor. The infrared radiation coefficient of these objects is usually close to 1, and objects with the infrared radiation coefficient larger than a preset threshold (such as 95%) are recommended as the target objects.
The infrared radiation coefficient of the object can be obtained by inquiring empirical data. The infrared radiation coefficients of different objects are different, and if the infrared radiation coefficient of the target object is much smaller than 1, for example, 0.5, the measured surface temperature of the object needs to be further corrected according to the infrared radiation coefficient of the target object.
To ensure the accuracy of the body temperature measurement, the user is advised to use the recommended target object type.
Preferably, the infrared temperature sensor 500 is used to perform a plurality of consecutive measurements of the target object, and the obtained plurality of measurement values are processed, for example, simply averaged, to obtain the average value as the ambient temperature around the human body, i.e., the external ambient temperature. For another example, the maximum and minimum values are eliminated, and then averaged, and the average value is taken as the external environment temperature.
The infrared temperature sensor measures temperature in a non-contact manner, and generally needs to measure temperature at a certain distance from a measured part of an object.
In order to reduce the measurement error, the distance between the measured part and the infrared temperature sensor is a calibrated distance value, the distance can be positioned and limited by the structure of the shell of the electronic equipment, or the calibration position is prompted by a prompting device, so that the measurement accuracy is effectively improved.
For example, if the electronic device is a smart phone, the calibrated distance value can be limited by the thickness of the smart phone, so that the smart phone can be attached to the surface of an object to perform infrared temperature measurement, and the operation of a user is facilitated.
The present embodiment measures the forehead temperature of a target human body as a human body surface temperature using an infrared temperature sensor.
In order to accurately measure the forehead temperature, the forehead temperature needs to be measured towards the middle of the forehead, the distance is 3-5 cm, hair or ornaments cannot be shielded in the middle of the forehead, and otherwise the accuracy of temperature measurement can be influenced. Or carrying out a plurality of continuous rated temperature tests, and obtaining the average value of a plurality of measured values as the rated temperature.
In the embodiment, the surface temperature of the air or other objects around the human body is directly measured by the infrared temperature sensor as the ambient temperature, so that when the temperature of the cavity where the infrared temperature sensor is located is inconsistent with the temperature of the external environment, the ambient temperature of the human body can be accurately measured without externally hanging the NTC, and a more accurate body temperature can be obtained.
Because the external NTC is not needed, the space and the cost are saved, the difficulties of structural design and complete machine assembly of electronic equipment such as an intelligent terminal are solved, and particularly, the intelligent wearable product has the advantages of strict constraint on the appearance size, small size, high waterproof requirement and high portability requirement.
In addition, the infrared temperature sensor is used for replacing the traditional NTC method for measuring the environment temperature, so that the cost is saved, and the electronic equipment with the infrared temperature measurement function has the possibility of actual mass production.
In another embodiment of the present invention, as shown in fig. 5, an electronic device 10c includes an infrared temperature sensor 500, an internal temperature sensor 600, a memory 21 and a processor 22.
The infrared temperature sensor 500 is used to measure the surface temperature of an object.
The internal temperature sensor 600 is used to measure the ambient temperature around the infrared temperature sensor inside the electronic device 10 c.
The memory 21 is used for storing a computer program 23. The processor, when running the computer program, implements the method for infrared body temperature measurement as described above.
As an example, the processor 21 realizes the steps S100 to S400 according to the foregoing description when executing the computer program. Additionally, the processor 21 realizes the functions of the respective modules in the electronic device described above when executing the computer program. As yet another example, the processor, when executing the computer program, implements the functions of the external ambient temperature acquisition module 100, the human body surface temperature acquisition module 200, the internal ambient temperature acquisition module 300, and the human body temperature calculation module 400.
Alternatively, the computer program may be divided into one or more modules/units according to the particular needs to accomplish the invention. Each module/unit may be a series of computer program instruction segments capable of performing a particular function. The computer program instruction segment is used for describing the execution process of the computer program in the electronic equipment.
As an example, the computer program may be divided into modules/units in a virtual device, such as an external ambient temperature acquisition module, a human body surface temperature acquisition module, an internal ambient temperature acquisition module, and a human body temperature calculation module.
The processor is used for realizing infrared body temperature measurement by executing the computer program.
The processor may be a Central Processing Unit (CPU), Graphics Processing Unit (GPU), Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), general purpose processor or other logic device, etc., as desired.
The memory may be any internal storage unit and/or external storage device capable of implementing data, program storage. For example, the memory may be a plug-in hard disk, a smart card (SMC), a Secure Digital (SD) card, or a flash card. The memory is used for storing computer programs and data.
The electronic device 10c may further include an input/output device, a display device, a network access device, a bus, and the like, as required.
The electronic device 10c may also be a single chip microcomputer or a computing device integrating a Central Processing Unit (CPU) and a Graphics Processing Unit (GPU).
It will be understood by those skilled in the art that the above-mentioned units and modules for implementing the corresponding functions are divided for the purpose of convenient illustration and description, and the above-mentioned units and modules are further divided or combined according to the application requirements, that is, the internal structures of the devices/apparatuses are divided and combined again to implement the above-mentioned functions.
Each unit and module in the above embodiments may be separate physical units, or two or more units and modules may be integrated into one physical unit. The units and modules in the above embodiments may implement corresponding functions by using hardware and/or software functional units. Direct coupling, indirect coupling or communication connection among a plurality of units, components and modules in the above embodiments can be realized through a bus or an interface; the coupling, connection, etc. between the multiple units or devices may be electrical, mechanical, or the like. Accordingly, the specific names of the units and modules in the above embodiments are only for convenience of description and distinction, and do not limit the scope of protection of the present application.
In an embodiment of the present invention, a computer-readable storage medium has a computer program stored thereon, and the computer program can realize the method for measuring body temperature by infrared rays as described in the foregoing embodiments when being executed by a processor.
That is, when part or all of the technical solutions of the embodiments of the present invention contributing to the prior art are embodied by means of a computer software product, the computer software product is stored in a computer-readable storage medium.
The computer readable storage medium can be any portable computer program code entity apparatus or device. For example, the computer readable storage medium may be a U disk, a removable magnetic disk, a magnetic diskette, an optical disk, a computer memory, a read-only memory, a random access memory, etc.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An infrared body temperature measuring method is applied to electronic equipment comprising an infrared temperature sensor, and is characterized by comprising the following steps:
acquiring the ambient temperature around a target human body as the external ambient temperature;
measuring the surface temperature of a target human body by using the infrared temperature sensor as the surface temperature of the human body;
measuring an ambient temperature around the infrared temperature sensor with an internal temperature sensor as an internal ambient temperature;
and calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
2. The infrared body temperature measuring method according to claim 1, wherein the acquiring an ambient temperature around the target human body as an external ambient temperature comprises:
and measuring the temperature of an object around the target human body by using the infrared temperature sensor as the external environment temperature.
3. The infrared body temperature measurement method according to claim 2, characterized in that:
the object around the target human body comprises one of the following: air, table, wall, floor.
4. The infrared body temperature measuring method according to claim 2, wherein the measuring the temperature of the object around the target human body with the infrared temperature sensor as the external ambient temperature comprises:
selecting a target object from around a target human body;
measuring the temperature of the target object by using the infrared temperature sensor to obtain at least one measured value;
and processing the at least one measured value to obtain the external environment temperature.
5. The infrared body temperature measurement method according to claim 1, characterized in that:
the electronic equipment is a smart phone or smart wearable equipment.
6. The infrared body temperature measuring method as claimed in claim 1, wherein said measuring the surface temperature of the target human body with said infrared temperature sensor as the human body surface temperature comprises:
and measuring the forehead temperature of the target human body by using the infrared temperature sensor as the surface temperature of the human body.
7. An electronic device comprising an infrared temperature sensor and an internal temperature sensor, characterized by further comprising:
the external environment temperature acquisition module is used for acquiring the ambient temperature around the target human body as the external environment temperature;
the human body surface temperature acquisition module measures the surface temperature of a target human body by using the infrared temperature sensor as the human body surface temperature;
an internal ambient temperature acquisition module for measuring the ambient temperature around the infrared temperature sensor by using the internal temperature sensor as the internal ambient temperature;
and the human body temperature calculation module is used for calculating the human body temperature of the target human body according to the external environment temperature, the human body surface temperature and the internal environment temperature.
8. The electronic device of claim 7, wherein:
and the external environment temperature acquisition module is used for measuring the temperature of objects around the target human body by using the infrared temperature sensor as the external environment temperature.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the method of infrared body temperature measurement according to any one of claims 1 to 6 when running the computer program.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that:
the computer program, when executed by a processor, implements a method for infrared thermometry according to any one of claims 1 to 6.
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Application publication date: 20210716 |