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EP-4350311-B1 - WEARABLE ELECTRONIC APPARATUS, BODY TEMPERATURE MEASUREMENT METHOD, AND WEARABLE ELECTRONIC DEVICE

EP4350311B1EP 4350311 B1EP4350311 B1EP 4350311B1EP-4350311-B1

Inventors

  • QI, Lipeng
  • YAO, Chao
  • LIU, YI
  • LI, CHENLONG

Dates

Publication Date
20260506
Application Date
20230105

Claims (15)

  1. A wearable electronic apparatus (100), comprising a housing (10), a speaker, a processor (30), a temperature sensor (20) located in the housing (10), a thermally conductive metal member (50), a flexible circuit board (80) located inside the housing and thermally conductive layer (60), wherein the housing (10) has a sound outlet hole (113) and a contact part (1111), the temperature sensor (20) comprises a first temperature sensor (21) and a second temperature sensor (22), the first temperature sensor (21) and the second temperature sensor (22) are configured to respectively measure temperatures at different temperature measurement points, wherein both the first temperature sensor (21) and the second temperature sensor (22) are located on the flexible circuit board (80); the second temperature sensor is located on a side of the first temperature sensor opposite to the sound outlet hole and the processor (30) is configured to determine a core temperature of a user based on a thermal equilibrium temperature corresponding to the first temperature sensor (21) and a thermal equilibrium temperature corresponding to the second temperature sensor (22); the contact part (1111) is configured to be located in ear (500) of the user and in contact with the ear (500) and the first temperature sensor (21) and the contact part (1111) are disposed corresponding to each other; the thermally conductive metal member (50) is embedded in the contact part (1111) and exposed on an outer surface of the housing (10); both the first temperature sensor (21) and the second temperature sensor (22) are located on a side that is of the flexible circuit board (80) and faces to a center of the housing (10) and the first temperature sensor (21) is configured to measure a temperature of a position that is on the flexible circuit board (80) and that corresponds to the first temperature sensor (21), and the second temperature sensor (22) is configured to measure a temperature of a position that is on the flexible circuit board (80) and that corresponds to the second temperature sensor (22); the thermally conductive layer (60) is fitted between the flexible circuit board (80) and the thermally conductive metal member (50) on the housing (10).
  2. The wearable electronic apparatus (100) according to claim 1, wherein the temperature sensor (20) further comprises a third temperature sensor (23) disposed in the housing (10), the third temperature sensor is located on a side of the second temperature sensor opposite to the first temperature sensor, the first temperature sensor (21) and the second temperature sensor (22) are located on a side of the speaker (40) that faces to the ear (500) of the user, and the third temperature sensor (23) is located on a side of the speaker (40) away from the ear (500) of the user, and configured to measure an ambient temperature in which the third temperature sensor (23) is located; and the processor (30) is configured to determine the core temperature of the user based on the thermal equilibrium temperature corresponding to the first temperature sensor (21), the thermal equilibrium temperature corresponding to the second temperature sensor (22), and the ambient temperature.
  3. The wearable electronic apparatus (100) according to claim 2, wherein a part that is of the housing (10) and that is located on the third temperature sensor (23) is located outside ear (500) of the user.
  4. The wearable electronic apparatus (100) according to claim 2, comprising a calculation module, wherein the calculation module is located in the housing (10), and the processor (30) is configured to control the calculation module to determine the core temperature based on the thermal equilibrium temperature corresponding to the first temperature sensor (21), the thermal equilibrium temperature corresponding to the second temperature sensor (22), and the ambient temperature.
  5. The wearable electronic apparatus (100) according to claim 4, wherein the processor (30) is configured to control the calculation module to determine the core temperature based on a formula: T = R 2 T 1 − T 2 − b × T 3 R 1 + T 1 + a × T 3 , wherein T is the core temperature, T 1 is the thermal equilibrium temperature corresponding to the first temperature sensor (21), T 2 is the thermal equilibrium temperature corresponding to the second temperature sensor (22), T 3 is the ambient temperature; R 1 is equivalent thermal resistance between the first temperature sensor (21) and the second temperature sensor (22) during a heat transfer process, R 2 is equivalent thermal resistance between human tissue and the first temperature sensor (21) during a heat transfer process, and a and b are both adjustment factors.
  6. The wearable electronic apparatus (100) according to claim 1, wherein thermal resistance between the second temperature sensor (22) and the ear (500) is greater than thermal resistance between the first temperature sensor (21) and the ear (500).
  7. The wearable electronic apparatus (100) according to claim 6, wherein the thermally conductive metal member (50) is a stainless steel member, a copper member, or an aluminum member.
  8. A body temperature measurement method, wherein the measurement method is applied to the wearable electronic apparatus (100) according to any one of claims 1 to 7, and the measurement method comprises: obtaining thermal equilibrium temperatures at different temperature measurement points of a housing (10) in the wearable electronic apparatus (100), wherein the temperature measurement points comprise a first temperature measurement point (111) and a second temperature measurement point (112), the first temperature measuring point being located on a side of the second temperature measuring point facing the sound outlet of the wearable electronic apparatus; and determining a core temperature of a user based on a thermal equilibrium temperature at the first temperature measurement point (111) and a thermal equilibrium temperature at the second temperature measurement point (112).
  9. The measurement method according to claim 8, wherein the temperature measurement points further comprise an ambient temperature measurement point (121), and the ambient temperature measurement point is located on a side of the second temperature measurement point opposite to the first temperature measurement point; and the determining a core temperature of the user based on the thermal equilibrium temperature at the first temperature measurement point (111) and the thermal equilibrium temperature at the second temperature measurement point (112) specifically comprises: determining the core temperature of the user based on the thermal equilibrium temperature at the first temperature measurement point (111), the thermal equilibrium temperature at the second temperature measurement point (112), and an ambient temperature at the ambient temperature measurement point (121).
  10. The measurement method according to claim 9, wherein before the obtaining thermal equilibrium temperatures at different temperature measurement points of a housing (10) in the wearable electronic apparatus (100), the measurement method further comprises: determining the ambient temperature at the ambient temperature measurement point (121).
  11. The measurement method according to claim 10, wherein the determining the ambient temperature at the ambient temperature measurement point (121) specifically comprises: obtaining an initial temperature at the ambient temperature measurement point (121), wherein the initial temperature is a temperature at the ambient temperature measurement point (121) before the wearable electronic apparatus (100) is worn on ear (500) of the user; obtaining a momentary temperature at the ambient temperature measurement point (121), wherein the momentary temperature is a temperature at the ambient temperature measurement point (121) when the wearable electronic apparatus (100) is worn on the ear (500) of the user within a first preset time; and determining the ambient temperature at the ambient temperature measurement point (121) based on the initial temperature and the momentary temperature.
  12. The measurement method according to claim 10, wherein before the determining a core temperature of the user based on the thermal equilibrium temperature at the first temperature measurement point (111) and the thermal equilibrium temperature at the second temperature measurement point (112), the measurement method further comprises: correcting the ambient temperature at the ambient temperature measurement point (121) based on a thermal equilibrium temperature at the ambient temperature measurement point (121).
  13. The measurement method according to claim 11, wherein the correcting the ambient temperature at the ambient temperature measurement point (121) based on a thermal equilibrium temperature at the ambient temperature measurement point (121) specifically comprises: detecting a working scenario of the wearable electronic apparatus (100), wherein the working scenario comprises a low power consumption scenario, a medium power consumption scenario, and a high power consumption scenario; measuring the thermal equilibrium temperatures at the temperature measurement points; and determining an adjustment factor based on the working scenario and the thermal equilibrium temperature at the ambient temperature measurement point (121).
  14. The measurement method according to claim 13, wherein the correcting the ambient temperature at the ambient temperature measurement point (121) based on a thermal equilibrium temperature at the ambient temperature measurement point (121) specifically comprises: determining whether the thermal equilibrium temperature at the ambient temperature measurement point (121) is the same as the ambient temperature at the ambient temperature measurement point (121); determining the core temperature based on the ambient temperature at the ambient temperature measurement point (121) if the thermal equilibrium temperature at the ambient temperature measurement point (121) is the same as the ambient temperature at the ambient temperature measurement point (121); and if the thermal equilibrium temperature at the ambient temperature measurement point (121) is different from the ambient temperature at the ambient temperature measurement point (121), determining the ambient temperature at the ambient temperature measurement point (121) as the thermal equilibrium temperature at the ambient temperature measurement point (121), and continuing to correct the ambient temperature at the ambient temperature measurement point (121) until the thermal equilibrium temperature at the ambient temperature measurement point (121) is the same as the determined ambient temperature at the ambient temperature measurement point (121).
  15. A storage medium, wherein the storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by the processor of a wearing electronic apparatus according to any of claims 1-7, the body temperature measurement method according to any one of claims 8 to 14 is implemented.

Description

This application claims priority to Chinese Patent Application No. 202210182919.1, filed with China National Intellectual Property Administration on February 25, 2022 and entitled "WEARABLE ELECTRONIC APPARATUS, BODY TEMPERATURE MEASUREMENT METHOD, AND WEARABLE ELECTRONIC DEVICE". TECHNICAL FIELD This application relates to the field of electronic technologies, and in particular, to a wearable electronic apparatus, a body temperature measurement method, and a wearable electronic device. BACKGROUND With the continuous development of science and technology, people have higher and higher functional requirements for earphones and the like. Body temperature can reflect the human health condition, and a core temperature of the human body can best reflect the body temperature of the human body. In medicine, a temperature of the pulmonary artery is defined as the core temperature. Because the pulmonary artery is inside the human body, it is difficult to measure in conventional means. Currently, axillary temperature, rectal temperature, oral temperature, eardrum temperature, forehead temperature, and the like are usually used as substitute tests for the core temperature to measure human body temperature. Because the eardrum is close to the pulmonary artery, the eardrum temperature can more accurately reflect the core temperature of the human body than other substitute tests. In the related technologies, the eardrum temperature is mainly measured by an ear thermometer. However, the earphones in the related technologies cannot measure the body temperature of the human body, and a function of the earphones is single. US 2019/117155 A1 relates to an electronic device configured to measure temperature from within an ear canal of an ear comprising a first bend and a second bend, the device comprising: an enclosure configured for insertion into the ear canal and comprising a distal end configured to extend at least beyond the first bend; a distal temperature sensor situated at a location of the enclosure that faces a tragus-side of the ear canal distal to the first bend and proximal to the second bend when the enclosure is fully inserted into the ear canal, the distal temperature sensor configured to sense one or both of conductive heat and convective heat and to produce a first temperature signal; a proximal temperature sensor situated on the enclosure at a location spaced apart from a surface of the ear canal and proximal to the distal temperature sensor location in an outer ear direction when the enclosure is fully inserted into the ear canal, the proximal temperature sensor configured to sense one or both of conductive heat and convective heat and to produce a second temperature signal; a memory configured to store a pre-established heat balance equation; and a processor coupled to the distal and proximal temperature sensors and the memory, the processor configured to calculate an absolute core body temperature using the heat balance equation and the first and second temperature signals. SUMMARY This application provides a wearable electronic apparatus, a body temperature measurement method, and a wearable electronic device, and a core temperature of a user can be measured. The invention is set out in the appended claims. According to a first aspect of the invention, a wearable electronic apparatus according to claim 1 is provided. The wearable electronic apparatus includes a housing, a processor, and a temperature sensor located in the housing. The housing has a sound outlet hole. The temperature sensor includes a first temperature sensor and a second temperature sensor. The first temperature sensor and the second temperature sensor respectively measure temperatures at different temperature measurement points. The second temperature sensor is located on a side of the first temperature sensor opposite to the sound outlet hole. The processor is configured to determine a core temperature of a user based on a thermal equilibrium temperature corresponding to the first temperature sensor and a thermal equilibrium temperature corresponding to the second temperature sensor. In this embodiment of this application, the first temperature sensor and the second temperature sensor are disposed in the wearable electronic apparatus. The first temperature sensor and the second temperature sensor can respectively measure temperatures at different temperature measurement points in the wearable electronic apparatus. Because a temperature is proportional to thermal resistance during a heat transfer process, the core temperature of the user can be determined based on the thermal equilibrium temperature corresponding to the first temperature sensor and the thermal equilibrium temperature corresponding to the second temperature sensor by provision of the processor. In this way, the core temperature of the user can be measured, and functions of the wearable electronic apparatus can be more diversified. In a possible implementation, the temper