Core body temperature measurement method and device

Abstract

The present application provides a core body temperature measurement method and device, which relates to the technical field of human medical core body temperature monitoring equipment. The measurement method is applied to a measurement device arranged on the surface of the chest cavity of a subject, the measurement device includes a detection module, the detection module includes a heat-conducting layer, a first sensor is arranged on the side of the heat-conducting layer facing the chest cavity, and a second sensor is arranged on the side of the heat-conducting layer away from the chest cavity; the method includes: obtaining measurement data, the measurement data includes the surface temperature of the chest cavity collected by the first sensor and the internal temperature of the heat-conducting layer collected by the second sensor; the surface temperature and the internal temperature are respectively input into a preset prediction model to obtain the predicted surface temperature and the predicted internal temperature; the core body temperature of the subject is determined according to the predicted surface temperature and the predicted internal temperature. The core body temperature measurement method and device provided in the present application can solve the technical problem that the existing human core temperature measurement method cannot continuously measure the human core temperature under special circumstances.

Description

Technical Field

[0001] The present application relates to the technical field of human medical core body temperature monitoring equipment, and in particular to a core body temperature measurement method and device. Background Art

[0002] Body temperature is one of the important vital signs of the human body and an important basis for clinically reflecting the health status of the human body. Traditional measurement methods such as using infrared thermometers to measure eardrum temperature and using thermometers to measure armpit skin temperature can only detect body surface temperature, and the test results are easily affected by the external environment temperature. The core temperature of the human body is not easily affected by the external environment and can more accurately reflect the health status of the human body than the surface temperature.

[0003] Existing methods for measuring human core temperature include invasive measurement methods such as measuring pulmonary artery blood temperature and bladder temperature, as well as non-invasive measurement methods such as measuring rectal temperature. These invasive measurement methods will cause discomfort to the subject, and all require medical staff to use professional medical equipment to implement. It is impossible to continuously monitor the core temperature of the human body in special environments such as fire rescue and deep-sea exploration. Summary of the invention

[0004] The embodiments of the present application provide a core body temperature measurement method and device, which can solve the technical problem that the existing human core temperature measurement method cannot continuously measure the human core temperature under special circumstances.

[0005] In a first aspect, an embodiment of the present application provides a core body temperature measurement method, which is applied to a measurement device disposed on a chest surface of a subject, wherein the measurement device includes a detection module, the detection module includes a heat conductive layer, a first sensor is disposed on a side of the heat conductive layer facing the chest cavity, and a second sensor is disposed on a side of the heat conductive layer facing away from the chest cavity;

[0006] The method includes: acquiring measurement data, the measurement data including: the surface temperature of the chest cavity collected by a first sensor and the internal temperature of the thermal conductive layer collected by a second sensor; inputting the surface temperature and the internal temperature into a preset prediction model for processing, respectively, to obtain a predicted surface temperature and a predicted internal temperature; and determining the core body temperature of the subject according to the predicted surface temperature and the predicted internal temperature.

[0007] The core body temperature measurement method provided in the present application can be applied to a wearable measurement device. Since it takes a long time for the sensor to reach a stable temperature value from an initial temperature value, after obtaining the body surface temperature collected by the first sensor and the internal temperature of the heat-conducting layer collected by the second sensor, the two temperature values ​​are respectively input into a preset prediction model for processing, and the predicted body surface temperature when the first sensor reaches a stable state and the predicted internal temperature when the second sensor reaches a stable state are respectively obtained. Then, the core body temperature of the subject is determined based on the predicted body surface temperature and the predicted internal temperature, which can shorten the measurement time of the core body temperature and improve the measurement accuracy. In addition, the wearable measurement device is not restricted by the environment and can measure the core body temperature of the subject anytime, anywhere and continuously.

[0008] Optionally, the prediction model is:

[0009] T fit (i) = T(i) + k × [T(2) - T(1)] × (e a×i -e 400a )

[0010] Among them, T fit (i) represents the predicted temperature, T(i) represents the temperature collected at the i-th sampling time, i is a positive integer greater than 2, T(2) represents the temperature collected at the second sampling time, T(1) represents the temperature collected at the first sampling time, k and a are constant parameters, and the interval between two adjacent sampling times is 5 seconds.

[0011] Based on the above optional manner, the change process of the sensor from the initial temperature to the stable temperature is exponential. Therefore, the stable temperature value of the sensor can be predicted based on the temperature values ​​collected at the initial two sampling moments and the exponential function.

[0012] Optionally, the measuring device further comprises a third sensor, a heat flux sensor is arranged inside the heat conductive layer, and the measurement data further comprises: the ambient temperature of the environment of the subject collected by the third sensor and the heat flux density in the heat conductive layer collected by the heat flux sensor;

[0013] The core body temperature of the subject is determined according to the predicted surface temperature and the predicted internal temperature, including: inputting the predicted surface temperature, the predicted internal temperature, the ambient temperature and the heat flux density into a preset core body temperature optimization model for processing to obtain the core body temperature of the subject.

[0014] Optionally, the core body temperature optimization model is:

[0015]

[0016] Among them, T c represents core body temperature, Td_ represents the predicted surface temperature, T u_ represents the predicted internal temperature, T amb Indicates the ambient temperature, R p Represents the thermal conductivity of the heat-conducting layer, R t Represents the thermal conductivity of human tissue, R iso Indicates the thermal conductivity of the insulation module set outside the detection module, A iso_m Represents the outer surface area of ​​the insulation module, A s Indicates the diameter of the detection module, U tf represents the heat flux, K tf is a constant.

[0017] Based on the above optional methods, the core body temperature of the subject may be affected by factors such as the external environment temperature and the thermal conductivity of the heat-conducting layer. Therefore, the traditional human core body temperature model can be corrected according to the ambient temperature of the subject collected by the third sensor and the heat flux density of the heat-conducting layer, thereby improving the accuracy of the human core body temperature measurement result.

[0018] In a second aspect, an embodiment of the present application provides a core body temperature measurement device, the measurement device comprising: a detection module and a control module, the detection module comprising: a heat conductive layer, a first sensor, a second sensor and a heat flow sensor;

[0019] When the measuring device is arranged on the chest surface of the subject, the first sensor is used to collect the surface temperature of the chest, the second sensor is used to collect the internal temperature of the thermal conductive layer, and the heat flux sensor is used to collect the heat flux density in the thermal conductive layer; the first sensor is arranged on the side of the thermal conductive layer facing the chest, the second sensor is arranged on the side of the thermal conductive layer facing away from the chest, the heat flux sensor is arranged between the first sensor and the second sensor, and the control module is used to execute any one of the methods described in the first aspect above to determine the core body temperature of the subject.

[0020] Optionally, the detection module also includes: closed-cell foam and a first thermal insulation coating; a groove is provided on the closed-cell foam, the thermal conductive layer is provided in the groove, the second sensor is in contact with the closed-cell foam, and the first thermal insulation coating is provided on the outer surface of the closed-cell foam.

[0021] Optionally, the measuring device also includes an insulation module, the insulation module includes: an insulation aerogel and a second insulation coating arranged on the outer surface of the insulation aerogel; a concave cavity is arranged on the insulation module, the detection module is arranged in the concave cavity, and a protective layer is arranged on the side of the second insulation coating facing the chest cavity; a third sensor is arranged on the second insulation coating, and the third sensor is used to collect the ambient temperature of the environment in which the subject is located.

[0022] Based on the above optional method, an insulation module is arranged outside the detection module so that the detection module is wrapped in the concave cavity of the insulation module, thereby improving the heat preservation effect and reducing the influence of the external environment on the measurement results. A protective layer is arranged on the side of the second insulation coating facing the chest cavity to improve the comfort of the subject when wearing the measurement device.

[0023] Optionally, the control module includes a computing unit and a communication unit; the computing unit is respectively connected to the first sensor, the second sensor, the third sensor and the heat flow sensor, and the computing unit is used to determine the core body temperature; the communication unit is respectively connected to the computing unit and the external device, the communication unit is used to transmit the core body temperature to the external device, and the external device is used to display the core body temperature.

[0024] Optionally, the measuring device further includes: a strap; the thermal insulation module, the control module and the detection module arranged in the insulation module are all arranged in the strap, and when the strap is worn on the chest surface, the first sensor abuts against the chest surface.

[0025] Based on the above optional method, the strap-type measuring device is convenient for users to wear. At the same time, when the strap is worn on the chest surface, the first sensor can be close to the chest surface of the subject and quickly conduct heat to the thermal conductive layer, thereby accurately collecting the subject's body surface temperature and the internal temperature of the thermal conductive layer.

[0026] In a third aspect, an embodiment of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method described in any one of the first aspects above is implemented.

[0027] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method as described in any one of the above-mentioned first aspects is implemented.

[0028] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute any of the methods described in the first aspect above.

[0029] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 It is a structural schematic diagram of a core body temperature measurement device provided by an embodiment of the present application;

[0032] Figure 2 is a structural schematic diagram of a detection module provided in one embodiment of the present application;

[0033] Figure 3 It is a structural schematic diagram of a thermal insulation module provided in one embodiment of the present application;

[0034] Figure 4 It is a structural schematic diagram of a core body temperature measurement device provided by an embodiment of the present application, which is arranged on the chest surface of a subject;

[0035] Figure 5 It is a flowchart of a core body temperature measurement method provided in one embodiment of the present application;

[0036] Figure 6 This is a graph of experimental results of measuring core body temperature based on the core body temperature measurement method and device provided by the present application, provided in one embodiment of the present application;

[0037] Figure 7 It is a structural diagram of a terminal device provided by an embodiment of the present application;

[0038] Explanation of the reference numerals: 1. Measuring device; 11. Detection module; 111. Thermal conductive layer; 112. First sensor; 113. Second sensor; 114. Heat flow sensor; 115. Closed-cell foam; 1151. Groove; 116. First thermal insulation coating; 12. Thermal insulation module; 121. Thermal insulation aerogel; 122. Second thermal insulation coating; 123. Concave cavity; 124. Protective layer; 125. Third sensor; 13. Control module; 131. Computing unit; 132. Communication unit; 14. Strap; 2. Subject; 21. Chest cavity; 3. External device. DETAILED DESCRIPTION

[0039] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0040] Traditional measurement methods such as using an infrared thermometer to measure the temperature of the eardrum and using a thermometer to measure the temperature of the armpit skin can only detect the surface temperature of the body, and the test results are easily affected by the external environmental temperature. At present, human core temperature is usually used as an important basis for judging human health in clinical medicine. Human core temperature usually refers to the rectal temperature located in the internal center of the human body, which is not easily affected by the external environment. Existing methods for measuring human core temperature include invasive measurement methods such as measuring pulmonary artery blood temperature and bladder temperature, and non-invasive measurement methods for measuring rectal temperature. These invasive measurement methods will cause discomfort to the subject, and all require medical staff to use professional medical equipment to achieve. In special environments such as fire rescue and deep-sea exploration, it is impossible to continuously monitor the core temperature of the human body.

[0041] In order to solve the above technical problems, the embodiment of the present application provides a core body temperature measurement method and device. When the measuring device is set on the chest surface of the subject, the first temperature sensor contacts the chest surface and collects the body surface temperature, and the second temperature sensor can collect the internal temperature of the heat conductive layer during heat conduction. The surface temperature and the internal temperature are processed separately by a preset prediction model, and the stable values ​​of the two sensors can be quickly predicted, so that the core temperature of the human body can be quickly calculated according to the predicted surface temperature and the predicted internal temperature, shortening the measurement time of the core body temperature, so that the core temperature of the human body can be continuously detected in any environment.

[0042] The technical solution of the present application is described in detail below in conjunction with the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present application, but should not be understood as limiting the present application.

[0043] In one possible implementation, reference Figures 1 to 4, an embodiment of the present application provides a core body temperature measurement device. The measurement device 1 includes a detection module 11. Among them, the detection module 11 includes: a thermal conductive layer 111, a first sensor 112, a second sensor 113 and a heat flow sensor 114. When the measurement device 1 is set on the surface of the chest cavity 21 of the subject 2, the first sensor 112 is used to collect the body surface temperature of the chest cavity 21, the second sensor 113 is used to collect the internal temperature of the thermal conductive layer 111, and the heat flow sensor 114 is used to collect the heat flux density in the thermal conductive layer 111. The first sensor 112 is set on the side of the thermal conductive layer 111 facing the chest cavity 21, the second sensor 113 is set on the side of the thermal conductive layer 111 away from the chest cavity 21, and the heat flow sensor 114 is set between the first sensor 112 and the second sensor 113.

[0044] In one embodiment, Figure 2 The structural diagram of the detection module shown in FIG. The detection module 11 further includes a closed-cell foam 115 and a first thermal insulation coating 116. A groove 1151 is provided on the closed-cell foam 115, the thermal conductive layer 111 is provided in the groove 1151, the second sensor 113 abuts against the closed-cell foam 115, and the first thermal insulation coating 116 is provided on the outer surface of the closed-cell foam 115.

[0045] In one example, a portion of the first sensor 112 may be embedded in the heat-conducting layer 111, and another portion may be exposed on the outside of the heat-conducting layer 111 facing the chest cavity 21, so that when the detection module 11 is set on the surface of the chest cavity 21, the first sensor 112 can be in direct contact with the epidermis of the chest cavity 21, thereby collecting the body surface temperature. A portion of the second sensor 113 may be embedded in the heat-conducting layer 111, and another portion may be located in the closed-cell foam 115 and in direct contact with the closed-cell foam 115.

[0046] In another example, the heat-conducting layer 111 may be a cylindrical structure, the heat flow sensor 114 is located at the center of the heat-conducting layer 111, and the heat flow sensor 114, the first sensor 112, and the second sensor 113 are located in the same vertical direction. The distance between the heat flow sensor 114 and the first sensor 112 and the distance between the heat flow sensor 114 and the second sensor 113 are the same, and the heat flow sensor 114 can detect the heat flow dynamics in the heat-conducting layer 111 in real time. Exemplarily, the heat-conducting layer 111 may be polydimethylsiloxane (PDMS), the thermal conductivity of which is substantially equal to the thermal conductivity of human skin tissue.

[0047] In another possible implementation, in order to improve the thermal insulation performance of the measuring device 1 and reduce the impact of the external environment on the data collected by the sensor, a thermal insulation module 12 may be provided outside the detection module 11. Figure 1 and Figure 3In one embodiment, the thermal insulation module 12 includes: a thermal insulation aerogel 121 and a second thermal insulation coating 122 arranged on the outer surface of the thermal insulation aerogel 121. A concave cavity 123 is arranged on the thermal insulation module 12, and the second thermal insulation coating 122 is also arranged inside the concave cavity 123. A third sensor 125 is arranged on the outside of the second thermal insulation coating 122, and the third sensor 125 is used to collect the ambient temperature of the environment in which the subject 2 is located. Among them, the size of the concave cavity 123 is adapted to the size of the detection module 11, and the detection module 11 can be arranged in the concave cavity 123. Exemplarily, in this embodiment, the detection module 11 is a cylindrical structure, and the shape of the concave cavity 123 can be circular.

[0048] A protective layer 124 is provided on the side of the second thermal insulation coating 122 facing the chest cavity 21. Generally, the hardness of the second thermal insulation coating 122 is relatively high. When the measuring device 1 is set on the surface of the chest cavity 21, the second thermal insulation coating 122 directly contacts the skin, which may cause discomfort to the subject 2. The protective layer 124 may be made of a material with good softness (such as silicone products, etc.), thereby improving the comfort of the measuring device 1.

[0049] refer to Figure 1 The structural diagram of the measuring device 1 shown. The measuring device 1 provided in the present application also includes a control module 13. The control module 13 includes a computing unit 131 and a communication unit 132. Among them, the computing unit 131 is connected to the first sensor 112, the second sensor 113, the third sensor 125 and the heat flow sensor 114 respectively. The computing unit 131 can determine the core body temperature of the subject 2 according to the body surface temperature collected by the first sensor 112, the internal temperature collected by the second sensor 113, the ambient temperature collected by the third sensor 125, the heat flux density collected by the heat flow sensor 114 and the preset core body temperature measurement method.

[0050] The communication unit 132 is connected to the calculation unit 131 and the external device 3 respectively. The communication unit 132 can obtain the core body temperature from the calculation unit 131, and then transmit the core body temperature to the external device 3, and the external device 3 is used to display the core body temperature. On the other hand, the communication unit 132 can also obtain the body surface temperature, internal temperature, ambient temperature and internal temperature from the calculation unit 131, and transmit these temperature values ​​to the external device 3.

[0051] In one example, the computing unit 131 can be connected to the first sensor 112, the second sensor 113, the third sensor 125, the heat flow sensor 114, and the communication unit 132 through wires. The external device 3 and the communication unit 132 can transmit data through a wired connection or a wireless connection. Exemplarily, the external device 3 can be a Bluetooth receiving device, and the communication unit 132 can be a Bluetooth communication unit.

[0052] In other possible implementations, the core body temperature measurement device 1 provided in the present application further includes a strap 14. The thermal insulation module 12, the control module 13, and the detection module 11 disposed in the thermal insulation module 12 are all disposed on the strap 14. Figure 4 When the strap 14 is worn on the surface of the chest cavity 21, the first sensor 112 abuts against the surface of the chest cavity 21. Exemplarily, the side of the insulation module 12 facing away from the chest cavity 21 and the control module 13 can be crimped (i.e., pressed by elastic hot stamping glue under high temperature and high pressure conditions) on the strap 14. The material of the strap 14 can be sweat-resistant and mildew-resistant material.

[0053] An embodiment of the present application also provides a core body temperature measurement method, which can be applied to the core body temperature measurement device provided in the above embodiment and arranged on the chest surface of the subject, and can also be applied to any body temperature measurement device with multi-level and multi-material thermal insulation effect.

[0054] Reference below Figure 5 The flow chart of the core body temperature measurement method shown in and the core body temperature measurement device provided in the above embodiments provide an exemplary description of the core body temperature measurement method provided in the embodiments of the present application.

[0055] In a possible implementation, the core body temperature measurement method provided in this embodiment includes the following steps:

[0056] S401, obtaining measurement data, the measurement data including: the surface temperature of the chest cavity collected by the first sensor and the internal temperature of the heat conductive layer collected by the second sensor.

[0057] Specifically, when the measuring device is worn on the surface of the chest of the subject, the first sensor is located on the side of the thermal conductive layer facing the chest, and the second sensor is located on the side of the thermal conductive layer facing away from the chest. The first sensor can directly contact the epidermis of the chest to collect the body surface temperature of the subject. After the thermal conductive layer contacts the human body, the human body will transfer heat to the thermal conductive layer, and the second sensor can collect the internal temperature of the thermal conductive layer.

[0058] S402, inputting the body surface temperature and the internal temperature into a preset prediction model for processing, to obtain a predicted body surface temperature and a predicted internal temperature.

[0059] It should be noted that the process of the human body conducting heat to the heat conducting layer takes a long time, so it also takes a long time for the temperature collected by the sensor to reach a stable value. The present application utilizes the characteristic that the change process from the initial temperature to the stable temperature of the sensor changes exponentially, and first inputs the body surface temperature and the internal temperature into the preset prediction model respectively to obtain the predicted body surface temperature and the predicted internal temperature, thereby quickly predicting the stable temperature value of the first sensor and the stable temperature value of the second sensor.

[0060] Exemplarily, the prediction model can be expressed as:

[0061] T fit (i) = T(i) + k × [T(2) - T(1)] × (e a×i -e 400a )

[0062] Among them, T fit (i) represents the predicted temperature, T(i) represents the temperature collected at the i-th sampling moment, i is a positive integer greater than 2, T(2) represents the temperature collected at the second sampling moment, T(1) represents the temperature collected at the first sampling moment, and k and a are constant parameters. Exemplary. The interval between two adjacent sampling moments can be 5 seconds.

[0063] By inputting the body surface temperature collected at the i-th sampling moment, the body surface temperature collected at the second sampling moment, and the body surface temperature collected at the first sampling moment into the above-mentioned preset prediction model, the predicted body surface temperature predicted at the i-th sampling moment can be determined. By inputting the internal temperature collected at the i-th sampling moment, the internal temperature collected at the second sampling moment, and the internal temperature collected at the first sampling moment into the above-mentioned preset prediction model, the predicted internal temperature predicted at the i-th sampling moment can be determined.

[0064] S403, determining the core body temperature of the subject according to the predicted body surface temperature and the predicted internal temperature.

[0065] In one embodiment, the predicted surface temperature and the predicted internal temperature can be input into a traditional human core temperature model for processing to determine the core temperature of the subject. The traditional human core temperature model is obtained by calibrating and fitting a hot plate that simulates the heat generation mechanism of human body temperature. The traditional human core temperature model can be expressed as:

[0066]

[0067] Among them, T c represents core body temperature, T d_ represents the predicted surface temperature, T u_ represents the predicted internal temperature, R p Represents the thermal conductivity of the heat-conducting layer, R t Represents the thermal conductivity of human tissue.

[0068] In another embodiment, since the core body temperature of the subject may be affected by factors such as the external environment temperature and the thermal conductivity of the heat-conducting layer, the traditional human core body temperature model can be corrected according to the parameters such as the ambient temperature of the subject and the heat flux density of the heat-conducting layer collected by the third sensor, thereby improving the accuracy of the human core body temperature measurement result.

[0069] Therefore, the predicted surface temperature, the predicted internal temperature, the ambient temperature and the heat flux density can be input into the preset core body temperature optimization model for processing to obtain the core body temperature of the subject. The core body temperature optimization model can be expressed as:

[0070]

[0071] Among them, T c represents core body temperature, T d_ represents the predicted surface temperature, T u_ represents the predicted internal temperature, T amb Indicates the ambient temperature, R p Represents the thermal conductivity of the heat-conducting layer, R t Represents the thermal conductivity of human tissue, R iao represents the thermal conductivity of the insulation module disposed outside the detection module (for example, it may be the thermal conductivity of the insulation aerogel in the insulation module), A iso_m Represents the outer surface area of ​​the insulation module, A s Indicates the diameter of the detection module (the detection module is a cylindrical structure), U tf represents the heat flux, K tf is a constant.

[0072] Figure 6 This is a graph showing the experimental results of measuring the core body temperature of a subject using the core body temperature detection method and device provided in the embodiment of the present application. Figure 6 In, T u represents the internal temperature collected by the second sensor 113, and the predicted T u The internal temperature is input into the preset prediction model for processing to obtain the internal predicted temperature. d represents the body surface temperature collected by the first sensor 112, and the predicted T d The predicted body surface temperature is obtained by inputting the body surface temperature into the preset prediction model for processing. The subjects were first tested in a room temperature environment, and then at 2500 seconds, the subjects were tested wearing liquid cooling clothes. During the test, the oral core temperature of the subjects collected by the oral thermometer was 36.7℃.

[0073] from Figure 6It can be seen that the surface temperature and internal temperature collected by the sensor both increase exponentially. At 1750s, the surface temperature and internal temperature collected by the sensor both reach stable values. The prediction model provided in this application can quickly predict the stable temperatures of the first sensor and the second sensor at the initial time. Then, the core body temperature of the subject can be determined in a very short time using the core body temperature optimization model provided in this application. The error between the calculated core temperature and the oral core temperature is about 0.1°C, which is a small error.

[0074] On the one hand, the core body temperature measurement device provided by the present application is provided with a multi-layered and multi-material heat insulation module, and the detection module is wrapped in the heat insulation module, which can reduce the influence of the external environment on the values ​​collected by the multiple sensors in the detection module and improve the accuracy of the measurement data. In addition, the heat insulation module and the detection module are arranged on a strap, which is convenient for wearing the measurement device on the chest surface of the subject. The wearable measurement device is not restricted by the environment and can measure the core body temperature of the subject anytime, anywhere and continuously. On the other hand, the core body temperature measurement method provided by the present application can be applied to any wearable measurement device. Since it takes a long time for the sensor to reach a stable temperature value from the initial temperature value, after obtaining the body surface temperature collected by the first sensor and the internal temperature of the heat conductive layer collected by the second sensor, the two temperature values ​​are respectively input into the preset prediction model for processing, and the body surface predicted temperature and the internal predicted temperature when the collected values ​​of the sensor reach a stable state are quickly predicted. In addition, the traditional human core temperature model can be corrected according to parameters such as the ambient temperature of the subject and the heat flux density of the thermal conductive layer, which can reduce the interference of external environmental factors on the measurement results and improve the measurement accuracy of core body temperature.

[0075] Based on the same inventive concept, the present application embodiment also provides a terminal device. Figure 7 As shown, the terminal device 5 of this embodiment includes: a processor 501, a memory 502, and a computer program 504 stored in the memory 502 and executable on the processor 501. The computer program 504 can be executed by the processor 501 to generate instructions 503, and the processor 501 can implement the steps in the above-mentioned core body temperature detection method embodiment according to the instructions 503.

[0076] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiment are implemented.

[0077] The embodiment of the present application also provides a computer program product. When the computer program product is run on a terminal device, the terminal device implements the steps in the above method embodiment when executing the computer program product.

[0078] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may at least include: any entity or device that can carry the computer program code to the camera / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0079] References to "one embodiment" or "some embodiments" etc. described in this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0080] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. It should also be understood that the term "and / or" used in the specification of the present application and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0081] In addition, in the present application, unless otherwise clearly stipulated and limited, the terms "connection", "connected", etc. should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0082] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for measuring core body temperature, characterized in that: The method is applied to a measuring device arranged on the chest surface of a subject, the measuring device comprising a detection module, the detection module comprising a heat-conducting layer, a first sensor being arranged on a side of the heat-conducting layer facing the chest, and a second sensor being arranged on a side of the heat-conducting layer facing away from the chest; The method comprises: Acquiring measurement data, the measurement data comprising: the surface temperature of the chest cavity acquired by the first sensor and the internal temperature of the heat conductive layer acquired by the second sensor; Inputting the body surface temperature into a preset prediction model for processing to obtain a predicted body surface temperature; Inputting the internal temperature into the prediction model for processing to obtain the internal predicted temperature; determining the core body temperature of the subject according to the predicted body surface temperature and the predicted internal temperature; The prediction model is: fit (i) = T(i) + k × [T(2) - T(1)] × (e a×i -e 400a ), where T fit (i) represents the predicted temperature, T(i) represents the temperature collected at the i-th sampling time, i is a positive integer greater than 2, T(2) represents the temperature collected at the second sampling time, T(1) represents the temperature collected at the first sampling time, and k and a are constant parameters.

2. The measuring method according to claim 1, characterized in that: The interval between two adjacent sampling moments is 5 seconds.

3. The measuring method according to claim 1 or 2, characterized in that: The measuring device further comprises a third sensor, wherein a heat flow sensor is arranged inside the heat conducting layer; The measurement data also includes: the ambient temperature of the environment in which the subject is located, which is collected by the third sensor, and the heat flux density in the heat conductive layer, which is collected by the heat flux sensor; The determining the core body temperature of the subject according to the predicted body surface temperature and the predicted internal temperature comprises: The predicted body surface temperature, the predicted internal temperature, the ambient temperature and the heat flux density are input into a preset core body temperature optimization model for processing to obtain the core body temperature of the subject.

4. The measuring method according to claim 3, characterized in that: The core body temperature optimization model is: Among them, T c represents the core body temperature, T d_ represents the predicted body surface temperature, T u_ represents the predicted internal temperature, T amb represents the ambient temperature, R p represents the thermal conductivity of the thermal conductive layer, R t Represents the thermal conductivity of human tissue, R iso represents the thermal conductivity of the insulation module arranged outside the detection module, A iso_m represents the outer surface area of ​​the insulation module, A s represents the diameter of the detection module, U tf represents the heat flux, K tf is a constant.

5. A core body temperature measurement device, characterized in that: The measuring device (1) comprises: a detection module (11) and a control module (13); the detection module (11) comprises: a heat conducting layer (111), a first sensor (112), a second sensor (113) and a heat flow sensor (114); When the measuring device (1) is arranged on the surface of the chest cavity (21) of the subject (2), the first sensor (112) is used to collect the surface temperature of the chest cavity (21), the second sensor (113) is used to collect the internal temperature of the heat conductive layer (111), and the heat flux sensor (114) is used to collect the heat flux density in the heat conductive layer (111); The first sensor (112) is arranged on a side of the heat-conducting layer (111) facing the chest cavity (21), the second sensor (113) is arranged on a side of the heat-conducting layer (111) facing away from the chest cavity (21), the heat flow sensor (114) is arranged between the first sensor (112) and the second sensor (113), and the control module (13) is used to execute the method described in any one of claims 1 to 4 to determine the core body temperature of the subject (2).

6. The measuring device according to claim 5, characterized in that The detection module (11) further comprises: closed-cell foam (115) and a first thermal insulation coating (116); The closed-cell foam (115) is provided with a groove (1151), the heat-conducting layer (111) is arranged in the groove (1151), the second sensor (113) is in contact with the closed-cell foam (115), and the first heat-insulating coating (116) is arranged on the outer surface of the closed-cell foam (115).

7. The measuring device according to claim 6, characterized in that The measuring device (1) further comprises a thermal insulation module (12), wherein the thermal insulation module (12) comprises: a thermal insulation aerogel (121) and a second thermal insulation coating (122) arranged on the outer surface of the thermal insulation aerogel (121); The thermal insulation module (12) is provided with a cavity (123), the detection module (11) is arranged in the cavity (123), and a protective layer (124) is provided on a side of the second thermal insulation coating (122) facing the chest cavity (21); A third sensor (125) is provided on the second thermal insulation coating (122), and the third sensor (125) is used to collect the ambient temperature of the environment in which the subject (2) is located.

8. The measuring device according to claim 7, characterized in that The control module (13) comprises: a computing unit (131) and a communication unit (132); The calculation unit (131) is connected to the first sensor (112), the second sensor (113), the third sensor (125) and the heat flow sensor (114) respectively, and the calculation unit (131) is used to determine the core body temperature; The communication unit (132) is connected to the calculation unit (131) and the external device (3) respectively, and the communication unit (132) is used to transmit the core body temperature to the external device (3), and the external device (3) is used to display the core body temperature.

9. The measuring device according to any one of claims 5 to 8, characterized in that The measuring device (1) further comprises: a binding belt (14); The thermal insulation module (12), the control module (13), and the detection module (11) arranged in the thermal insulation module (12) are all arranged on the strap (14); when the strap (14) is worn on the surface of the chest cavity (21), the first sensor (112) abuts against the surface of the chest cavity (21).

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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