KR20240133470A - Wearable device, electronic device and operation method thereof for monitoring body water change - Google Patents

Abstract

A wearable device according to one embodiment of the present disclosure may include a communication circuit configured to transmit or receive data or signals with an external electronic device, an output module, an electrical sensor for measuring a first biosignal related to an electrical characteristic, an optical sensor for measuring a second biosignal related to an optical characteristic, a temperature sensor for measuring a temperature of skin, and at least one processor operatively connected to the communication circuit, the output module, the electrical sensor, the optical sensor, and the temperature sensor. The at least one processor may be configured to obtain the first biosignal, the second biosignal, and the third biosignal related to the temperature, respectively, from the electric sensor, the optical sensor, and the temperature sensor, and transmit, through the communication circuit, first data related to the obtained first biosignal, second data related to the obtained second biosignal, and third data related to the third biosignal to the external electronic device, and receive, through the communication circuit, data related to a change in body water, which is calculated based on a change in the first data and the second data respectively corrected by the third data, from the external electronic device, and output feedback related to the change in body water to the output module based on the received data related to a change in body water.

Description

WEARABLE DEVICE, ELECTRONIC DEVICE AND OPERATION METHOD THEREOF FOR MONITORING BODY WATER CHANGE

The present disclosure relates to a wearable device, an electronic device and an operating method thereof for monitoring changes in body moisture according to one embodiment.

Maintaining body water is essential for basic human health, such as blood circulation, waste excretion, and body temperature control through smooth metabolism. In particular, if body water decreases by more than 2%, cognitive and motor abilities may decline, and if body water decreases by more than 6%, it may lead to death in severe cases.

In the past, in order to detect such body water, a dilution method using radioactive isotopes, a whole-body body composition analysis method using bioelectrical impedance analysis (BIA) that measures and analyzes body impedance, or a sweat patch that collects and analyzes sweat from the skin were used. However, these methods took a long time to measure and could only measure temporary conditions, making it difficult to continuously monitor the state of body water. In addition, the sweat patch can only be used during exercise when a large amount of sweat is secreted.

In addition, in the case of exercise, which is the main cause of changes in body water, the body temperature rises, which causes errors in measuring changes in body water.

According to one embodiment of the present disclosure, a wearable device may include a communication circuit configured to transmit or receive data or a signal with an external electronic device, an output module, an electrical sensor for measuring a first biosignal related to an electrical characteristic, an optical sensor for measuring a second biosignal related to an optical characteristic, a temperature sensor for measuring a temperature of skin, and at least one processor operatively connected to the communication circuit, the output module, the electrical sensor, the optical sensor and the temperature sensor. The at least one processor may be configured to acquire the first biosignal, the second biosignal and the third biosignal related to the temperature, respectively, from the electrical sensor, the optical sensor and the temperature sensor. The at least one processor may be configured to transmit, to the external electronic device, first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the third biosignal via the communication circuit. The at least one processor may be configured to receive, from the external electronic device, data related to a change in body water, calculated based on changes in the first data and the second data, each of which is corrected by the third data, through the communication circuit. The at least one processor may be configured to output feedback related to a change in body water to the output module, based on the received data related to a change in body water.

According to one embodiment of the present disclosure, a method for operating a wearable device may include an operation of acquiring a first biosignal related to an electrical characteristic, a second biosignal related to an optical characteristic, and a third biosignal related to a temperature from an electrical sensor, an optical sensor, and a temperature sensor, respectively. According to one embodiment, a method for operating a wearable device may include an operation of transmitting, through a communication circuit, first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the third biosignal to an external electronic device. According to one embodiment, a method for operating a wearable device may include an operation of receiving, through the communication circuit, data related to a change in body water, which is calculated based on a change in the first data and the second data, which are respectively corrected by the third data, from the external electronic device. According to one embodiment, a method for operating a wearable device may include an operation of outputting feedback related to a change in body water to an output module, based on the received data related to a change in body water.

A non-transitory computer-readable storage medium storing one or more programs according to one embodiment of the present disclosure may include an operation of acquiring a first biosignal related to an electrical characteristic, a second biosignal related to an optical characteristic, and a third biosignal related to a temperature, respectively, from an electrical sensor, an optical sensor, and a temperature sensor based on execution of an application. The storage medium according to one embodiment may include an operation of transmitting, through a communication circuit, first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the third biosignal to an external electronic device. The storage medium according to one embodiment may include an operation of receiving, through the communication circuit, data related to a change in body water of a body calculated based on a change in the first data and the second data, each of which is corrected by the third data, from the external electronic device. The storage medium according to one embodiment may include an operation of outputting feedback related to the change in body water to an output module based on the received data related to the change in body water.

An electronic device according to one embodiment of the present disclosure may include a communication circuit configured to transmit or receive data or signals with an external device, an output module, and at least one processor operatively connected to the communication circuit and the output module. The at least one processor may be configured to obtain first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data corresponding to a temperature of the skin. The at least one processor may be configured to correct the first data and the second data based on the third data. The at least one processor may be configured to calculate data related to a change in body water content based on a change in the corrected first data and the corrected second data. The at least one processor may be configured to transmit the calculated data related to a change in body water content to the external device through the communication circuit, or output feedback to the output module based on the calculated data related to a change in body water content.

According to one embodiment of the present disclosure, a method of operating an electronic device may include an operation of acquiring first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data related to a temperature of the skin. According to one embodiment, the method of operating an electronic device may include an operation of correcting the first data and the second data based on the third data. According to one embodiment, the method of operating an electronic device may include an operation of calculating data related to a change in body water content based on a change in the corrected first data and the corrected second data. According to one embodiment, the method of operating an electronic device may include an operation of transmitting the calculated data related to a change in body water content to an external device through a communication circuit, or outputting feedback to an output module based on the calculated data related to a change in body water content.

A non-transitory computer-readable storage medium storing one or more programs according to one embodiment of the present disclosure may include an operation of acquiring, based on execution of an application, first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data related to a temperature of the skin. The storage medium according to one embodiment may include an operation of correcting the first data and the second data based on the third data. The storage medium according to one embodiment may include an operation of calculating data related to a change in body water content of a body based on a change in the corrected first data and the corrected second data. The storage medium according to one embodiment may include an operation of transmitting the calculated data related to a change in body water content to an external device through a communication circuit, or outputting feedback to an output module based on the calculated data related to a change in body water content.

FIG. 1 is a block diagram of an electronic device within a network environment according to embodiments of the present disclosure.
FIG. 2A illustrates a block diagram of a wearable device according to one embodiment of the present disclosure.
FIG. 2b illustrates a connection state between a wearable device and an external electronic device according to one embodiment of the present disclosure.
FIG. 3 is a flowchart of a method of operating a wearable device according to one embodiment of the present disclosure.
FIG. 4 is a block diagram of an electronic device according to one embodiment of the present disclosure.
FIG. 5 is a flowchart of a method of operating an electronic device according to one embodiment of the present disclosure.
FIG. 6 illustrates a graph of changes in body moisture calculated in response to temperature compensation, respectively, according to one embodiment of the present disclosure.
FIG. 7 is a graph illustrating changes in impedance of multiple frequencies according to changes in body temperature, according to one embodiment of the present disclosure.
FIG. 8A is a graph illustrating changes in the ratio of green light to infrared light of a PPG, each corresponding to a change in temperature, according to one embodiment of the present disclosure.
FIG. 8b is a graph illustrating changes in PPG DC levels corresponding to temperature changes, respectively, according to one embodiment of the present disclosure.
FIG. 8c is a graph illustrating PPG waveforms corresponding to each temperature according to one embodiment of the present disclosure.
FIG. 8d is a graph illustrating changes in PPG AC peak size corresponding to temperature changes, respectively, according to one embodiment of the present disclosure.
FIG. 9a illustrates a graph of a first weight assigned according to skin temperature, according to one embodiment of the present disclosure.
FIG. 9b illustrates a graph of second weights assigned according to skin temperature, according to one embodiment of the present disclosure.
FIG. 10A is a graph illustrating changes in first data each corresponding to a user's situation according to one embodiment of the present disclosure.
FIG. 10b is a graph illustrating changes in second data each corresponding to a user's situation according to one embodiment of the present disclosure.
FIG. 11 illustrates a second display of an electronic device providing visual feedback according to one embodiment of the present disclosure.

FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment of the present disclosure.

Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

The processor (120) may control at least one other component (e.g., a hardware or software component) of an electronic device (101) connected to the processor (120) by executing, for example, software (e.g., a program (140)), and may perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store a command or data received from another component (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the command or data stored in the volatile memory (132), and store result data in a nonvolatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

The auxiliary processor (123) may control at least a portion of functions or states associated with at least one of the components of the electronic device (101) (e.g., the display module (160), the sensor module (176), or the communication module (190)), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. Such learning may be performed, for example, in the electronic device (101) itself on which the artificial intelligence model is executed, or may be performed through a separate server (e.g., server (108)). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-networks, or a combination of two or more of the above, but is not limited to the examples described above. In addition to the hardware structure, the artificial intelligence model may additionally or alternatively include a software structure.

The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or nonvolatile memory (134).

The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

The audio output module (155) can output an audio signal to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive an incoming call. According to one embodiment, the receiver can be implemented separately from the speaker or as a part thereof.

The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) can include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) can include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can obtain sound through an input module (150), or output sound through an audio output module (155), or an external electronic device (e.g., an electronic device (102)) (e.g., a speaker or a headphone) directly or wirelessly connected to the electronic device (101).

The sensor module (176) can detect an operating state (e.g., power or temperature) of the electronic device (101) or an external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., the electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that a user can perceive through a tactile or kinesthetic sense. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module (180) can capture still images and moving images. According to one embodiment, the camera module (180) can include one or more lenses, image sensors, image signal processors, or flashes.

The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery (189) can power at least one component of the electronic device (101). In one embodiment, the battery (189) can include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

The communication module (190) may support establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., the electronic device (102), the electronic device (104), or the server (108)), and performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., the application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a GNSS (global navigation satellite system) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module or a power line communication module). Among these communication modules, a corresponding communication module may communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) may use subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196) to identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199).

The wireless communication module (192) can support a 5G network and next-generation communication technology after a 4G network, for example, NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), terminal power minimization and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) may support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) may support various requirements specified in an electronic device (101), an external electronic device (e.g., an electronic device (104)), or a network system (e.g., a second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL) each, or 1 ms or less for round trip) for URLLC realization.

The antenna module (197) may transmit or receive signals or power to or from the outside (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and the external electronic device through the at least one selected antenna. According to some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

In one embodiment, the antenna module (197) can form a mmWave antenna module. In one embodiment, the mmWave antenna module can include a printed circuit board, an RFIC positioned on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) positioned on or adjacent a second side (e.g., a top side or a side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

At least some of the above components may be connected to each other and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)).

In one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102, or 104) may be the same or a different type of device as the electronic device (101). In one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of executing the function or service itself or in addition, request one or more external electronic devices to perform at least a part of the function or service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as it is or additionally and provide it as at least a part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (101) may provide an ultra-low latency service by using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device (104) may include an IoT (Internet of Things) device. The server (108) may be an intelligent server using machine learning and/or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199). The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

FIG. 2a illustrates a block diagram of a wearable device (200) according to one embodiment of the present disclosure. FIG. 2b illustrates a connection state between a wearable device (200) and an external electronic device (E) according to one embodiment of the present disclosure.

Referring to FIGS. 2A and 2B, a wearable device (200, for example, the electronic device (101) of FIG. 1) according to one embodiment may be a wearable type device that is attached or mounted on a part of a user's body. In one embodiment, the wearable device (200) may be a smart watch attached to a user's wrist, a head-mounted device (HMD) fixed to a user's head, or an earbud worn on a user's ear. In one embodiment, an external electronic device (E, for example, the external electronic device (102) of FIG. 1) may be a device that is communicatively connected to the wearable device (200) so as to wirelessly transmit and receive signals or data. In one embodiment, the external electronic device (E) may be a portable communication device (for example, a smartphone), a computer device, a portable multimedia device, or a portable medical device.

According to one embodiment, the wearable device (200) may include a first processor (210, e.g., the processor (120) of FIG. 1), a first communication circuit (220, e.g., the communication module (190) of FIG. 1), a first electrical sensor (230), a first optical sensor (240), a first temperature sensor (250), and/or a first output module (260, e.g., the sensor module (176) of FIG. 1). In one embodiment, the wearable device (200) may include only some of the components illustrated in FIG. 2A, or may additionally include components of the electronic device (101) illustrated in FIG. 1, although not illustrated in FIG. 2A.

According to one embodiment, the first processor (210) may perform an operation according to a command stored in a first memory (not shown, for example, memory (130) of FIG. 1)) or may perform an operation according to a command received from an external electronic device (E). In one embodiment, the first memory (not shown) may store an application, data, and/or operation command corresponding to an operation performed by the first processor (210).

According to one embodiment, the first communication circuit (220) can be wirelessly connected to an external electronic device (E). For example, the communication method can be implemented in various ways such as Bluetooth, BLE, or Wifi. In one embodiment, the first communication circuit (220) can set a connection state with the external electronic device (E) or transmit and/or receive a signal or data with the external electronic device (E) through a designated communication method.

According to one embodiment, the wearable device (200) can obtain user's biometric data through a first electrical sensor (230), a first optical sensor (240), and/or a first temperature sensor (250).

According to one embodiment, the first electrical sensor (230) can obtain a bio-signal related to an electrical characteristic. In one embodiment, an electrode electrically connected to the first electrical sensor (230) can be in contact with the user's body. In one embodiment, the wearable device (200) or the first processor (210) can estimate bio-data such as the user's heart rate, HRV, ECG, body temperature, water content, sweat output, stress state, and respiration state by using the bio-signal obtained through the first electrical sensor (230).

For example, the first electrical sensor (230) may include an impedance sensor that measures data related to impedance corresponding to at least one frequency within a specified frequency band (e.g., a frequency band of 1 [kHz] to 3 [MHz]). For example, the first electrical sensor (230) may be an electrical dermal activity (EDA) sensor that measures galvanic skin response (GSR) or electrical dermal activity (EDA) related to electrical characteristics.

According to one embodiment, the first optical sensor (240) can obtain a bio-signal related to an optical characteristic. In one embodiment, the first optical sensor (240) can obtain a bio-signal related to an optical characteristic by irradiating light to the user's skin and obtaining light reflected by the skin. In one embodiment, the wearable device (200) or the first processor (210) can estimate bio-data such as the user's heart rate, respiration rate, or blood pressure by using the bio-signal obtained through the first electrical sensor (230).

For example, the first optical sensor (240) may be a photoplethysmography (PPG) type photoplethysmogram sensor that measures pulse waves using light.

In one embodiment, the wearable device (200) or the first processor (210) can estimate the user's bio-data such as heart rate, HRV, ECG, body temperature, water content, sweat output, stress state, and respiration state by using the bio-signal acquired through the first optical sensor (240).

According to one embodiment, the first temperature sensor (250) can measure the body temperature of the user. For example, the first temperature sensor (250) can measure the temperature of the skin of the user while in contact with the skin. In one embodiment, the first temperature sensor (250) can also measure the body temperature of the user using optical or other methods.

In one embodiment, the first output module (260) may output visual, auditory and/or tactile feedback to the user. In one embodiment, the first output module (260) may include a first display (263) that provides visual feedback, a first speaker (265) that provides auditory feedback, and/or a first haptic module (267) that provides tactile feedback.

In one embodiment, the first output module (260) can output feedback related to changes in body water. For example, the first display (263) can display visual data related to changes in body water on the screen. For example, the first speaker (265) can generate sounds related to changes in body water. For example, the first haptic module (267) can generate vibrations related to changes in body water.

FIG. 3 is a flowchart (300) regarding a method of operating a wearable device (200) according to one embodiment of the present disclosure.

Referring to FIG. 3, according to one embodiment, a wearable device (e.g., the wearable device (200) or the first processor (210) of FIG. 2A) may, in operation 310, obtain a first biosignal, a second biosignal, and a third biosignal related to temperature from an electrical sensor (e.g., a first electrical sensor (230) of FIG. 2A), an optical sensor (e.g., a first optical sensor (240) of FIG. 2A), and a temperature sensor (e.g., a first temperature sensor (250) of FIG. 2A), respectively.

In one embodiment, the wearable device (200) can obtain a first biosignal related to an electrical characteristic from an electrical sensor (230). In one embodiment, the wearable device (200) can obtain a second biosignal related to an optical characteristic from an optical sensor (240). In one embodiment, the wearable device (200) can obtain a third biosignal related to temperature from a temperature sensor (250).

In one embodiment, the wearable device (200) may acquire the first biosignal, the second biosignal, and/or the third biosignal simultaneously or sequentially in the operation 310, and the order of acquiring each signal may be changed in various ways.

According to one embodiment, the wearable device (200) may, in operation 330, transmit first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the acquired third biosignal to an external electronic device (e.g., the external electronic device (E) of FIG. 2b) through a communication circuit (e.g., the first communication circuit (220) of FIG. 2a).

In one embodiment, the wearable device (200) can establish a communication connection corresponding to a designated communication method with an external electronic device (E) through a communication circuit (220). In one embodiment, the wearable device (200) can transmit first data, second data, and/or third data to the external electronic device (E) through a designated communication method.

In one embodiment, the first data may be a first bio-signal related to an electrical characteristic acquired from an electrical sensor (230), and may be bio-data processed or processed from the first bio-signal. In one embodiment, the first data may be bio-data related to an electrical characteristic such as impedance magnitude, impedance phase, resistance, reactance, or a ratio of high frequency to low frequency.

In one embodiment, the second data may be a second biosignal related to an optical characteristic acquired from an optical sensor (240), and may be biodata processed or processed from the second biosignal. In one embodiment, the second data may be biodata related to an optical characteristic, such as absorbance, PPG AC peak size, PPG DC level, AC compared to PPG DC, DC high wavelength compared to DC low wavelength, and AC high wavelength compared to AC low wavelength.

In one embodiment, the third data may be a third biosignal related to temperature obtained from a temperature sensor (250), and may be biodata processed or processed from the third biosignal.

In one embodiment, the wearable device (200) may transmit the first data, the second data, and/or the third data simultaneously or sequentially in the operation 330, and the order in which each signal is transmitted may be changed in various ways.

According to one embodiment, the wearable device (200) may, at operation 350, receive, from an external electronic device (E), data related to changes in body water calculated based on changes in first data and second data each corrected by third data, through a communication circuit (220).

According to one embodiment, the external electronic device (E) can calculate a change in body water content based on the first data, the second data, and the third data, as described below. In one embodiment, the external electronic device (E) can correct the first data and the second data using the third data received from the wearable device (200), and calculate a change in body water content based on changes in the corrected first data and the second data, respectively. In one embodiment, the external electronic device (E) can transmit data related to the calculated change in body water content to the wearable device (200).

According to one embodiment, the wearable device (200) may, in response to transmitting first data, second data, and third data to an external electronic device (E), receive, from the external electronic device (E), data related to changes in body water content calculated based on the transmitted first data, second data, and third data.

In one embodiment, the change in body water may mean a change relative to a given specific body water state. For example, the change in body water may be a percentage change (e.g., +2% or -3%) relative to a given body water state. For example, the given body water state may be a body water state at a given time or under a given condition, an average of accumulated measurements, or a given value.

According to one embodiment, the wearable device (200) may, at operation 370, output feedback related to a change in body water to an output module (e.g., the first output module (260) of FIG. 2A) based on data related to a change in body water received from an external electronic device (E).

According to one embodiment, the wearable device (200) may display visual data related to changes in body water on the first display (263). According to one embodiment, the wearable device (200) may generate a sound related to changes in body water on the first speaker (265). According to one embodiment, the wearable device (200) may generate a vibration related to changes in body water on the first haptic module (267).

According to one embodiment, the wearable device (200) can output feedback corresponding to a change in body water in real time to the output module (260) based on data related to a change in body water received from an external electronic device (E). According to one embodiment, the wearable device (200) can output feedback corresponding to a change in body water to the output module (260) when the change in body water received from the external electronic device (E) satisfies a specified condition.

FIG. 4 is a block diagram of an electronic device (400) according to one embodiment of the present disclosure.

Referring to FIG. 4, according to one embodiment, an electronic device (400, e.g., the electronic device (101) of FIG. 1) may include a second processor (410, e.g., the processor (120) of FIG. 1), a second communication circuit (420, e.g., the communication module (190) of FIG. 1), a second electrical sensor (430), a second optical sensor (440), a second temperature sensor (450), and/or a second output module (460, e.g., the sensor module (176) of FIG. 1). In one embodiment, the electronic device (400) may include only some of the configurations illustrated in FIG. 4, or may additionally include configurations of the electronic device (101) illustrated in FIG. 1 that are not illustrated in FIG. 4.

An electronic device (400) according to one embodiment may be a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, or a portable medical device. An electronic device (400) according to one embodiment may be a device that is communicatively connected to a wearable device (e.g., a wearable device (200) of FIG. 2A) so as to be able to wirelessly transmit and receive signals or data.

An electronic device (400) according to one embodiment may be a wearable type device, such as a smart watch that is attached to the user's wrist or is mounted on a part of the user's body, a head-mounted device (HMD) that is fixed to the user's head, or an earbud that is worn on the user's ear.

According to one embodiment, the second processor (410) may perform an operation according to a command stored in a second memory (not shown, for example, the ㅁ memory (130) of FIG. 1). According to one embodiment, the second memory (not shown) may store an application, data, and/or an operation command. According to one embodiment, the operation executed by the second processor (210) and/or the operation stored in the second memory (not shown) will be described below.

According to one embodiment, the second communication circuit (420) can be wirelessly connected to the wearable device (200). For example, the communication method can be implemented in various ways such as Bluetooth, BLE, or Wifi. In one embodiment, the first communication circuit (220) can set a connection state with the wearable device (200) or transmit and/or receive a signal or data with the wearable device (200) through a designated communication method.

An electronic device (400) according to one embodiment may obtain a user's biometric data through a second electrical sensor (430), a first optical sensor (440), and/or a second temperature sensor (450). In one embodiment, the second electrical sensor (430), the second optical sensor (440), and/or the second temperature sensor (450) have a configuration corresponding to the first electrical sensor (230), the first optical sensor (240), and/or the first temperature sensor (250), and thus, a description thereof will be omitted.

An electronic device (400) according to one embodiment may receive, through a second communication circuit (420), first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data corresponding to a temperature of the skin. For example, a wearable device (200) may measure a first biosignal, a second biosignal, and/or a third biosignal, and transmit the first data, the second data, and/or the third data to the electronic device (400) through a communication circuit (e.g., the first communication circuit (220) of FIG. 2A).

According to one embodiment, the second output module (460) may output visual, auditory, and/or tactile feedback to the user. In one embodiment, the second output module (460) may include a second display (463) providing visual feedback, a second speaker (465) providing auditory feedback, and/or a second haptic module (467) providing tactile feedback. In one embodiment, the second output module (460) has a configuration corresponding to the first output module (e.g., the first output module (260) of FIG. 2A), and thus, a description thereof will be omitted.

An electronic device (400) according to one embodiment may transmit data related to a change in body water to a wearable device (200) through a second communication circuit (420). For example, the wearable device (200) may receive data related to a change in body water through a communication circuit (e.g., a first communication circuit (220) of FIG. 2A). For example, the wearable device (200) may output visual, auditory, and/or tactile feedback to an output module (e.g., a first output module (260) of FIG. 2A) based on the received data related to a change in body water.

Fig. 5 is a flowchart (500) of a method of operating an electronic device (400) according to one embodiment of the present disclosure. Fig. 6 illustrates a graph of changes in body moisture calculated in response to whether temperature compensation is performed according to one embodiment of the present disclosure.

Referring to FIG. 5, according to one embodiment, an electronic device (e.g., the electronic device (400) of FIG. 4) may obtain first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data corresponding to a temperature of the skin.

An electronic device (400) according to one embodiment can obtain a first biosignal, a second biosignal, and a third biosignal related to temperature, respectively, from an electrical sensor (e.g., a second electrical sensor (430) of FIG. 4), an optical sensor (e.g., a second optical sensor (440) of FIG. 4), and a temperature sensor (e.g., a second temperature sensor (450) of FIG. 4).

An electronic device (400) according to one embodiment may receive, through a second communication circuit (420), first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data corresponding to a temperature of the skin. An electronic device (400) according to one embodiment may receive, through a second communication circuit (420), first data, second data, and/or third data from an external device (e.g., a wearable device (200) of FIG. 2A).

According to one embodiment, the electronic device (400) may acquire the first data, the second data, and/or the third data simultaneously or sequentially in the operation 510, and the order of acquiring each signal may be variously changed.

An electronic device (400) according to one embodiment can identify whether the temperature of the skin changes due to internal factors of the body at operation 520. For example, the temperature of the skin can change due to internal factors of the body, such as exercise or psychological state, and can also change due to external factors of the body due to changes in the external environment. An electronic device (400) according to one embodiment can identify whether the temperature changes due to internal factors of the body or due to external factors of the body.

An electronic device (400) according to one embodiment can determine a user's exercise status through heart rate (HR) or acceleration, and can identify whether skin temperature changes due to internal factors of the body based on the determined exercise status.

An electronic device (400) according to one embodiment may determine whether a user is located outdoors based on location data (e.g., GPS signals) and obtain external environmental data (e.g., temperature or humidity) corresponding to the user's location data. An electronic device (400) according to one embodiment may determine whether a user is located indoors based on location data (e.g., GPS signals) and obtain environmental data (e.g., temperature or humidity) from an external device located indoors. An electronic device (400) according to one embodiment may include a separate sensor (not shown) that measures external environmental data (e.g., temperature or humidity). An electronic device (400) according to one embodiment may identify whether skin temperature changes due to internal factors of a body based on the obtained external environmental data.

An electronic device (400) according to one embodiment can obtain a core temperature of a user from an external device (not shown). An electronic device (400) according to one embodiment can estimate a core temperature of a user based on first data related to a first biosignal, second data related to a second biosignal, and/or third data corresponding to a temperature of the skin. An electronic device (400) according to one embodiment can identify whether the temperature of the skin changes due to an internal factor of the body based on the core temperature of the user.

The electronic device (400) according to one embodiment can identify whether the skin temperature changes due to internal factors of the body after identifying whether the skin temperature changes. For example, the electronic device (400) can identify whether the skin temperature changes due to internal factors of the body when the skin temperature changes by a specified temperature (e.g., 0.5 degrees) or more.

An electronic device (400) according to one embodiment may, based on a result of identifying whether the temperature of the skin changes due to an internal factor of the body, correct the first data and the second data with a designated third weight in operation 525.

An electronic device (400) according to one embodiment may not apply a specified third weighting value when the temperature of the skin changes due to internal factors of the body (operation 520-Yes).

According to one embodiment, the electronic device (400) may apply the specified third weighting to the first data and the second data in operation 525 when the temperature of the skin does not change due to internal factors of the body (operation 520-No).

In one embodiment, when the skin temperature changes due to internal factors of the body, the blood flow and/or blood property changes may occur relatively large. Conversely, when the skin temperature changes due to external factors of the body, the blood flow and/or blood property changes may occur relatively small. For example, the designated third weighting may be designated as a value less than 1.

The electronic device (400) according to one embodiment can correct the first data and the second data based on the third data in operation 530. The electronic device (400) according to one embodiment can correct the first data and the second data based on the temperature of the skin.

Referring further to Figure 6, when a user performs exercise (e.g., internal factors of the body), the body temperature may increase and the body water may decrease compared to before the exercise. However, there is a large error (600) between the change in body water calculated when temperature compensation is performed and when temperature compensation is not performed.

In particular, as shown in Fig. 6, when temperature compensation is not performed, the change in body water may not be properly reflected and an error may occur compared to when temperature compensation is performed. The electronic device (400) according to one embodiment can quickly and accurately calculate the change in body water by detecting the change in body water based on the biometric data compensated based on temperature.

FIG. 7 is a graph illustrating changes in impedance of multiple frequencies according to changes in body temperature, according to one embodiment of the present disclosure.

Referring further to Fig. 7, a difference (700) in the magnitude of impedance corresponding to the electrical characteristics may occur between cases where the body temperature changes to a relatively high temperature (35.1°C) and a relatively low temperature (31.4°C). It can be confirmed that the impedance corresponding to multiple frequencies (5 kHz, 50 kHz, and 250 kHz) changes in response to the change in body temperature. This phenomenon may be caused by a change in blood flow due to a change in temperature and/or a change in the physical properties of blood due to a change in temperature.

The impedance corresponding to each frequency in Fig. 7 has a difference (700) in the size of the impedance according to the change in body temperature, as shown in [Table 1] below.

In one embodiment, the electronic device (400) can compensate the measured impedance according to the temperature of the skin. In one embodiment, the electronic device (400) can compensate the first data related to the first biosignal corresponding to the electrical characteristic by applying the designated first weight. Here, the designated first weight is designated corresponding to the first data and can be designated to change according to the temperature of the skin.

Frequency High temperature (35.1 ℃) Low temperature (31.4 ℃) Impedance difference 5 kHz - 1.53 % 4.37 % 5.90 % 50 kHz - 1.27 % 4.14 % 5.42 % 250 kHz - 1.10 % 3.43 % 4.53 %

FIG. 8a is a graph illustrating a change in the ratio of green light to infrared of a PPG, respectively corresponding to a change in temperature, according to an embodiment of the present disclosure. FIG. 8b is a graph illustrating a change in a PPG DC level, respectively corresponding to a change in temperature, according to an embodiment of the present disclosure. FIG. 8c is a graph illustrating a PPG waveform corresponding to each temperature, according to an embodiment of the present disclosure. FIG. 8d is a graph illustrating a change in a PPG AC peak size, respectively corresponding to a change in temperature, according to an embodiment of the present disclosure.

Referring further to FIGS. 8a to 8d, it can be confirmed that the data related to PPG corresponding to the optical characteristics changes differently when a temperature change occurs compared to when no temperature change occurs.

Specifically, as illustrated in Fig. 8a, in comparison to the case where no temperature change occurs (temperature change X), when a temperature change from high temperature to low temperature occurs (temperature change O), a phenomenon can be confirmed in which the ratio of green light (Green) to infrared (IR) gradually increases over time. For example, in the case where a temperature change from high temperature to low temperature occurs (temperature change O), a phenomenon can be confirmed in which the ratio of green light (Green) to red light (IR) relatively increases.

As shown in Fig. 8b, when no temperature change occurs (temperature change X), the PPG DC level can be maintained almost constant. In contrast, when a temperature change from high temperature to low temperature occurs (temperature change O), it can be confirmed that the PPG DC level gradually decreases over time.

As illustrated in Fig. 8c, green light (Green) and infrared (IR) can exhibit different PPG waveforms at relatively low temperatures (Low Temp.) and relatively high temperatures (High Temp.). Specifically, green light (Green) can exhibit a relatively small change range at relatively low temperatures (Low Temp.) and can exhibit a pattern in which the size gradually decreases over time. In addition, green light (Green) can exhibit a relatively large change range at relatively high temperatures (High Temp.) and can exhibit a pattern in which the size is maintained over time.

In the case of infrared (IR), it can show a relatively small change range at relatively low temperatures (Low Temp.) and can show a pattern in which the size gradually decreases over time. In addition, infrared (IR) can show a relatively large change range at relatively high temperatures (High Temp.) and can show a pattern in which the size is maintained over time.

As shown in Fig. 8d, when there is no temperature change (temperature change X), the PPG AC peak size can be maintained almost constant. In contrast, when there is a temperature change from high temperature to low temperature (temperature change O), the PPG AC peak size can be confirmed to gradually decrease over time.

In one embodiment, the electronic device (400) can compensate the measured PPG or data related to the PPG according to the temperature of the skin. In one embodiment, the electronic device (400) can compensate the second data related to the second biosignal corresponding to the optical characteristic by applying the designated second weight. Here, the designated second weight is designated corresponding to the second data and can be designated to change according to the temperature of the skin.

In one embodiment, the designated first weight and the designated second weight are designated to correspond to the first data and the second data, respectively, and may be designated to increase or decrease depending on the temperature of the skin, respectively. For example, the designated first weight and the designated second weight may be mapped to a table or graph in response to changes in the temperature of the skin.

FIG. 9a illustrates a graph of a first weight assigned according to skin temperature according to one embodiment of the present disclosure. FIG. 9b illustrates a graph of a second weight assigned according to skin temperature according to one embodiment of the present disclosure.

Skin temperature (℃) Specified first weight … … 31 1 32 1.21 33 1.33 34 1.36 … …

Skin temperature (℃) Specified second weight 5 kHz 50 kHz 250 kHz … … … … 31 1 1 1 31.5 0.9785 0.981 0.984 32 0.968 0.972 0.975 32.5 0.957 0.962 0.967 … … … … 34 0.947 0.952 0.959 34.5 0.945 0.951 0.957 35 0.943 0.949 0.956 … … … …

Referring further to FIG. 9a and [Table 2], in one embodiment, the designated first weight may be designated to increase in size based on an increase in skin temperature. For example, the designated first weight may be designated as 1 at a reference temperature (e.g., 31° C.), and may be designated to be greater than 1 at a temperature increased from the reference temperature. In one embodiment, the designated first weight may be designated to correspond to first data related to a first biosignal corresponding to an electrical characteristic, respectively.

An electronic device (400) according to one embodiment can compensate for first data (e.g., magnitude of impedance) related to a first biosignal corresponding to an electrical characteristic that decreases as the temperature of the skin increases by applying a first weighting value that is designated to increase as the temperature of the skin increases.

Referring further to FIG. 9b and [Table 3], in one embodiment, the designated second weight may be designated to decrease in size based on an increase in skin temperature. For example, the designated first weight may be designated as 1 at a reference temperature (e.g., 31° C.) and may be designated to be less than 1 at a temperature increased from the reference temperature. In one embodiment, the designated second weight may be designated to correspond to second data related to a second biosignal corresponding to an optical characteristic, respectively.

An electronic device (400) according to one embodiment can compensate for second data (e.g., ratio of green light to infrared light of PPG, PPG DC level, PPG AC peak size) related to a second biosignal corresponding to an optical characteristic that increases as the temperature of the skin increases by applying a second weighting factor that is designated to decrease as the temperature of the skin increases.

Referring again to FIG. 5, the electronic device (400) according to one embodiment may, at operation 550, calculate data related to changes in body water content based on changes in the corrected first data and the corrected second data.

An electronic device (400) according to one embodiment can calculate a change in the corrected first data. In one embodiment, the change in the corrected first data can be the current value (Corrected_Electrical_current) of the corrected first data compared to the previous value (Corrected_Electrical_previous) of the corrected first data, as in the following equation (Mathematical Expression 1). Alternatively, the change in the corrected first data can be calculated as the reciprocal of the current value (Corrected_Electrical_current) of the corrected first data compared to the previous value (Corrected_Electrical_previous) of the corrected first data, as in the following equation (Mathematical Expression 2).

An electronic device (400) according to one embodiment can calculate a change in the corrected second data. In one embodiment, the change in the corrected second data can be the current value (Corrected_Optical_current) of the corrected second data compared to the previous value (Corrected_Optical_previous) of the corrected second data, as in the following equation (Mathematical Equation 3). Alternatively, the change in the corrected first data can be calculated as the reciprocal of the current value (Corrected_Optical_current) of the corrected first data compared to the previous value (Corrected_Optical_previous) of the corrected second data, as in the following equation (Mathematical Equation 4).

An electronic device (400) according to one embodiment can calculate data related to changes in body moisture by applying a designated fifth weight and a designated sixth weight to changes in corrected first data and changes in corrected second data, respectively.

In one embodiment, the electronic device (400) can calculate a body water change based on the sum of a change in the first data (Electrical Feature Change) corrected by applying a designated fifth weight (Weight 5) and a change in the second data (Optical Feature Change) corrected by applying a designated sixth weight (Weight 6), as in the following equation (Equation 5).

In one embodiment, the sum of the designated fifth weight and the designated sixth weight may be kept constant. For example, the sum of the designated fifth weight and the designated sixth weight may be kept constant as 1.

In one embodiment, the designated fifth weight and the designated sixth weight may be changed based on changes in the temperature of the skin. For example, the designated fifth weight and the designated sixth weight may be designated based on the temperature of the skin, as shown in [Table 4] below.

Skin temperature (℃) Specified 5th weight Specified 6th weight … … … 31 0.5 0.5 32 0.55 0.45 33 0.60 0.4 34 0.65 0.35 … … …

In one embodiment, the designated fifth weight may be designated to gradually increase as the temperature of the skin increases. In one embodiment, the designated sixth weight may be designated to gradually decrease as the temperature of the skin increases.

For example, skin temperature often increases as a user performs exercise, and the first data related to electrical characteristics may be relatively robust to motion artifacts. In one embodiment, the size of the designated fifth weight corresponding to the first data related to electrical characteristics may be designated as large.

In addition, in the case of a decrease in body water (dehydration), since the reliability of the first data related to the electrical characteristics and the second data related to the optical characteristics are similar, the designated fifth weighting and the designated sixth weighting can be designated at similar levels.

FIG. 10A is a graph illustrating changes in first data corresponding to each user's situation according to one embodiment of the present disclosure. FIG. 10B is a graph illustrating changes in second data corresponding to each user's situation according to one embodiment of the present disclosure.

Referring further to FIG. 10a, when examining the change in the first data related to the electrical characteristics when dehydration occurs due to the user's exercise, there is almost no difference in the size of the change in the first data between the case where no beverage is consumed after dehydration (dehydration only) and the case where water is consumed after dehydration (beverage consumption). It is expected that there will be a difference in the change in body water content when water is consumed after dehydration (beverage consumption) and when no beverage is consumed after dehydration (dehydration only). However, in the case of the change in the first data related to the electrical characteristics, the change in body water content that changes in response to water consumption may be relatively small.

Referring further to FIG. 10b, when examining the change in the second data related to the optical characteristics when dehydration occurs due to the user's exercise, there is a distinct difference in the size of the change in the second data between the case where no beverage is consumed after dehydration (dehydration only) and the case where water is consumed after dehydration (beverage consumption). In particular, there is a distinct difference in the change in the second data when water is consumed (beverage consumption) than when no beverage is consumed after dehydration due to the user's exercise (dehydration only). The change in the second data related to the optical characteristics can relatively greatly reflect the change in body water content that changes in response to water consumption.

That is, in the case of an increase in body water (e.g., water re-intake), the reliability of the change in the second data related to the optical characteristics may be relatively high. In one embodiment, the size of the designated sixth weight corresponding to the second data related to the optical characteristics may be designated relatively large.

For example, the designated fifth weight and the designated sixth weight can be designated according to the rate of change in body water, as shown in [Table 5] below.

Change in body water (%) Specified 5th weight Specified 6th weight … … … + 0.3 % 0.44 0.56 + 0.2 % 0.46 0.54 + 0.1 % 0.48 0.52 0 0.5 0.5 - 0.1 % 0.5 0.5 … 0.5 0.5

In one embodiment, when there is no change in the rate of change in body water, or when the body water decreases (e.g., dehydration), the designated fifth weight and the designated sixth weight may be designated to remain constant. In one embodiment, when the body water increases (e.g., rehydration), the designated fifth weight may be designated to increase and the designated sixth weight may be designated to decrease. In one embodiment, as the magnitude of the rate of change in body water increases, the designated fifth weight may be designated to gradually increase and the designated sixth weight may be designated to gradually decrease.

Referring again to FIG. 5, the electronic device (400) according to one embodiment may, at operation 570, transmit data related to the generated body water change rate to an external device (e.g., the wearable device (200) of FIG. 2A) through a communication circuit.

An electronic device (400) according to one embodiment may output feedback to an output module (e.g., the second output module (460) of FIG. 4) based on data related to the generated body moisture change rate at operation 570.

FIG. 11 illustrates a second display (463) of an electronic device (400) providing visual feedback according to one embodiment of the present disclosure.

Referring to FIG. 11, an electronic device (400) according to one embodiment may output feedback to an output module (e.g., the second output module (460) of FIG. 4) based on data related to the generated body moisture change rate.

An electronic device (400) according to one embodiment may output visual, auditory and/or tactile feedback to a user to a second output module (460). In one embodiment, the electronic device (400) may output feedback related to a rate of change in body water based on data related to a rate of change in body water generated. In one embodiment, the electronic device (400) may provide visual feedback to a second display (463), auditory feedback to a second speaker (465), or tactile feedback to a second haptic module (467).

An electronic device (400) according to one embodiment may provide visual feedback to a second display (463) based on data related to a rate of change in body water, as illustrated in FIG. 11. In one embodiment, the electronic device (400) may visually display data related to a rate of change in body water that it has generated on the second display (463).

In one embodiment, the electronic device (400) may provide feedback to the second output module (460) based on data related to the generated rate of change in body water if the rate of change in body water falls outside a specified range (e.g., a range of -4% to +4%).

A wearable device (200; 101) according to one embodiment of the present disclosure may include a communication circuit (220; 190) configured to transmit or receive data or signals with an external electronic device (E), an output module (260), an electrical sensor (230) for measuring a first biosignal related to an electrical characteristic, an optical sensor (240) for measuring a second biosignal related to an optical characteristic, a temperature sensor (250) for measuring a temperature of skin, and at least one processor (210; 120) operatively connected to the communication circuit (220; 190), the output module (260), the electrical sensor (230), the optical sensor (240) and the temperature sensor (250). The at least one processor (210; 120) may be set to obtain the first biosignal, the second biosignal, and the third biosignal related to the temperature, respectively, from the electrical sensor (230), the optical sensor (240), and the temperature sensor (250). The at least one processor (210; 120) may be set to transmit, to the external electronic device (E), first data related to the obtained first biosignal, second data related to the obtained second biosignal, and third data related to the third biosignal. The at least one processor (210; 120) may be set to receive, from the external electronic device (E), data related to a change in body water, which is calculated based on a change in the first data and the second data, which are respectively corrected by the third data, via the communication circuit (220; 190). The at least one processor (210; 120) may be configured to output feedback related to the change in body moisture to the output module (260) based on the received data related to the change in body moisture.

In a wearable device (200; 101) according to one embodiment, the output module (260) may be set to include at least one of a display (263) providing visual feedback, a speaker (265) providing auditory feedback, or a haptic module (267) providing tactile feedback.

In a wearable device (200; 101) according to one embodiment, the electrical sensor (230) may be set to measure impedance of the skin corresponding to a specific frequency. The first data related to the first biosignal may include data related to at least one of a magnitude of impedance, a phase of impedance, resistance, reactance, or a ratio of impedance by frequency.

In a wearable device (200; 101) according to one embodiment, the optical sensor (240) may be set to optically measure a second biosignal related to blood flow. The second data related to the second biosignal may include data related to at least one of absorbance, PPG AC peak, PPG DC level, a ratio between PPG DC and PPG AC, a ratio of PPG DC by frequency, or a ratio of PPG AC by frequency.

The operating method of the wearable device (200; 101) according to one embodiment of the present disclosure may include an operation (310) of acquiring a first biosignal related to an electrical characteristic, a second biosignal related to an optical characteristic, and a third biosignal related to a temperature from an electrical sensor (230), an optical sensor (240), and a temperature sensor (250), respectively. The operating method of the wearable device (200; 101) according to one embodiment may include an operation (330) of transmitting, to an external electronic device (E), first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the third biosignal, through a communication circuit (220; 190). The operating method of the wearable device (200; 101) according to one embodiment may include an operation (350) of receiving, from the external electronic device (E), data related to a change in body water content, calculated based on changes in the first data and the second data, each of which is corrected by the third data, through the communication circuit (220; 190). The operating method of the wearable device (200; 101) according to one embodiment may include an operation (370) of outputting feedback related to a change in body water content to an output module (260), based on the received data related to a change in body water content.

A non-transitory computer-readable storage medium storing one or more programs according to one embodiment of the present disclosure may include an operation (310) of acquiring a first biosignal related to an electrical characteristic, a second biosignal related to an optical characteristic, and a third biosignal related to a temperature from an electrical sensor (230), an optical sensor (240), and a temperature sensor (250), based on execution of an application. The storage medium according to one embodiment may include an operation (330) of transmitting, to an external electronic device (E), first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the third biosignal, through a communication circuit (220; 190). A storage medium according to one embodiment may include an operation (350) of receiving, from the external electronic device (E), data related to a change in body water content, calculated based on changes in the first data and the second data, each of which is corrected by the third data, through the communication circuit (220; 190). A storage medium according to one embodiment may include an operation (370) of outputting feedback related to a change in body water content to an output module (260), based on the received data related to a change in body water content.

An electronic device (400; 101) according to one embodiment of the present disclosure may include a communication circuit (420; 190) configured to transmit or receive data or a signal with an external device (200), an output module, and at least one processor (410; 120) operatively connected with the communication circuit (420; 190) and the output module (460). The at least one processor (410; 120) may be configured to obtain first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data corresponding to a temperature of the skin. The at least one processor (410; 120) may be configured to correct the first data and the second data based on the third data. The at least one processor (410; 120) may be set to produce data related to a change in body water content based on changes in the corrected first data and the corrected second data. The at least one processor (410; 120) may be set to transmit the produced data related to a change in body water content to the external device (200) through the communication circuit (420; 190), or to output feedback to the output module (460) based on the produced data related to a change in body water content.

In an electronic device (400; 101) according to one embodiment, the at least one processor (410; 120) may be configured to receive the first data, the second data and the third data from the external device (200) through the communication circuit (420; 190), at least as a part of an operation of obtaining the first data, the second data and the third data.

An electronic device (400; 101) according to one embodiment may further include an electrical sensor (430) for measuring the first biosignal, an optical sensor (440) for measuring the second biosignal, and a temperature sensor (450) for measuring the temperature. The at least one processor (410; 120) may be configured to acquire the first data, the second data, and the third data from the electrical sensor (430), the optical sensor (440), and the temperature sensor (450), respectively, as at least a part of an operation of acquiring the first data, the second data, and the third data.

In an electronic device (400; 101) according to one embodiment, the at least one processor (410; 120) may be configured to correct the first data and the second data, based on a designated first weight and a designated second weight, respectively, as at least a part of an operation of correcting the first data and the second data. The designated first weight may be designated to vary according to the temperature of the skin in response to the first data. The designated second weight may be designated to vary according to the temperature of the skin in response to the second data.

In an electronic device (400; 101) according to one embodiment, the first designated weight may be designated to increase in size based on an increase in the temperature of the skin. The second designated weight may be designated to decrease in size based on an increase in the temperature of the skin.

In an electronic device (400; 101) according to one embodiment, the at least one processor (410; 120) may be set to identify whether the temperature of the skin changes due to an internal factor of the body. The at least one processor (410; 120) may be set to correct the first data and the second data with a designated third weight based on the identified result.

In an electronic device (400; 101) according to one embodiment, the at least one processor (410; 120) may be configured to, as at least a part of an operation of calculating data related to a change in body water of the body, calculate the data related to a change in body water based on a sum of a change in the corrected first data to which a designated fifth weighting is applied and a change in the corrected second data to which a designated sixth weighting is applied. The sum of the designated fifth weighting and the designated sixth weighting may be constant.

In an electronic device (400; 101) according to one embodiment, the designated fifth weight and the designated sixth weight may be changed based on a change in the temperature of the skin.

In an electronic device (400; 101) according to one embodiment, the designated fifth weight and the designated sixth weight can be changed based on the change in body moisture.

The operating method of the electronic device (400; 101) according to one embodiment of the present disclosure may include an operation (510) of acquiring first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data related to a temperature of the skin. The operating method of the electronic device (400; 101) according to one embodiment may include an operation (530) of correcting the first data and the second data based on the third data. The operating method of the electronic device (400; 101) according to one embodiment may include an operation (550) of calculating data related to a change in body water content based on a change in the corrected first data and the corrected second data. An operating method of an electronic device (400; 101) according to one embodiment may include an operation (570) of transmitting data related to the calculated change in body moisture to an external device (200) through a communication circuit (420; 190), or outputting feedback to an output module (460) based on the data related to the calculated change in body moisture.

In an operating method of an electronic device (400; 101) according to one embodiment, the operation (510) of obtaining the first data, the second data and the third data may receive the first data, the second data and the third data from the external device (200) through the communication circuit (420; 190).

In an operating method of an electronic device (400; 101) according to one embodiment, the operation (510) of obtaining the first data, the second data, and the third data may receive the first biosignal, the second biosignal, and the third biosignal, respectively, from an electrical sensor (430) that measures the first biosignal, an optical sensor (440) that measures the second biosignal, and a temperature sensor (450) that measures the temperature.

In an operating method of an electronic device (400; 101) according to one embodiment, the operation (530) of correcting the first data and the second data may correct the first data and the second data based on a designated first weight and a designated second weight, respectively. The designated first weight may be designated to change according to the temperature of the skin in response to the first data. The designated second weight may be designated to change according to the temperature of the skin in response to the second data.

The operating method of the electronic device (400; 101) according to one embodiment may further include an operation (520) of identifying whether the temperature of the skin changes due to an internal factor of the body. The operating method of the electronic device (400; 101) according to one embodiment may further include an operation (525) of correcting the first data and the second data with a designated third weight based on the identified result.

In an operating method of an electronic device (400; 101) according to one embodiment, an operation (550) for calculating data related to a change in body water content of the body may calculate the data related to a change in body water content based on a sum of a change in the corrected first data to which a designated fifth weighting is applied and a change in the corrected second data to which a designated sixth weighting is applied. The sum of the designated fifth weighting and the designated sixth weighting may be constant.

In an operating method of an electronic device (400; 101) according to one embodiment, the designated fifth weight and the designated sixth weight may be changed based on at least one of a change in the temperature of the skin or a change in the body moisture.

A non-transitory computer-readable storage medium storing one or more programs according to one embodiment of the present disclosure may include an operation (510) of acquiring, based on execution of an application, first data related to a first bio-signal corresponding to an electrical characteristic, second data related to a second bio-signal corresponding to an optical characteristic, and third data related to a temperature of the skin. The storage medium according to one embodiment may include an operation (530) of correcting the first data and the second data based on the third data. The storage medium according to one embodiment may include an operation (550) of calculating data related to a change in body water content of a body based on a change in the corrected first data and the corrected second data. The storage medium according to one embodiment may include an operation (570) of transmitting the calculated data related to a change in body water content to an external device (200) through a communication circuit (420; 190), or outputting feedback to an output module (460) based on the calculated data related to a change in body water content.

The electronic device according to the embodiments disclosed in this document may be a variety of devices. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, an electronic device, or a home appliance device. The electronic device according to the embodiments of this document is not limited to the above-described devices.

The embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly dictates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first) is referred to as "coupled" or "connected" to another (e.g., a second) component, with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

The term "module" used in the embodiments of this document may include a unit implemented in hardware, software or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be an integrally configured component or a minimum unit of the component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

One embodiment of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., the electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the called at least one instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

According to one embodiment, the method according to one embodiment disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded between a seller and a buyer as a commodity. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read only memory (CD-ROM)), or may be distributed online (e.g., by download or upload) via an application store (e.g., Play StoreTM) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a part of the computer program product may be at least temporarily stored or temporarily generated in a machine-readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or an intermediary server.

According to one embodiment, each component (e.g., a module or a program) of the above-described components may include a single or multiple entities, and some of the multiple entities may be separated and arranged in other components. According to one embodiment, one or more of the components or operations of the above-described components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, the multiple components (e.g., a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each of the multiple components identically or similarly to those performed by the corresponding component of the multiple components before the integration. According to one embodiment, the operations performed by the module, program, or other component may be executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims (20)

In a wearable device (200; 101),
A communication circuit (220; 190) configured to transmit or receive data or signals to or from an external electronic device (E);
Output module (260);
An electrical sensor (230) for measuring a first biosignal related to electrical characteristics;
An optical sensor (240) for measuring a second biosignal related to optical characteristics;
A temperature sensor (250) for measuring the temperature of the skin; and
At least one processor (210; 120) operatively connected to the communication circuit (220; 190), the output module (260), the electrical sensor (230), the optical sensor (240) and the temperature sensor (250),
At least one of the above processors (210; 120):
From the electrical sensor (230), the optical sensor (240) and the temperature sensor (250), the first biosignal, the second biosignal and the third biosignal related to the temperature are respectively acquired,
Through the above communication circuit (220; 190), first data related to the acquired first biosignal, second data related to the acquired second biosignal, and third data related to the third biosignal are transmitted to the external electronic device (E),
Through the above communication circuit (220; 190), data related to changes in body water calculated based on changes in the first data and the second data, each corrected by the third data, is received from the external electronic device (E),
Based on the data related to the change in body water received above, the output module (260) is set to output feedback related to the change in body water.
Wearable device (200; 101).
In the first paragraph,
The above output module (260) includes at least one of a display (263) providing visual feedback, a speaker (265) providing auditory feedback, or a haptic module (267) providing tactile feedback.
Wearable device (200; 101).
In any one of claims 1 to 2,
The above electric sensor (230) is set to measure the impedance of the skin corresponding to a specific frequency,
The first data related to the first biosignal includes data related to at least one of the magnitude of impedance, the phase of impedance, the resistance, the reactance, or the ratio of impedance by frequency.
Wearable device (200; 101).
In any one of claims 1 to 3,
The above optical sensor (240) is set to optically measure a second biosignal related to blood flow,
The second data related to the second biosignal includes data related to at least one of absorbance, PPG AC peak, PPG DC level, ratio between PPG DC and PPG AC, ratio of PPG DC by frequency, or ratio of PPG AC by frequency.
Wearable device (200; 101).
In an electronic device (400; 101),
A communication circuit (420; 190) configured to transmit or receive data or signals to or from an external device (200);
Output module; and
At least one processor (410; 120) operatively connected to the above communication circuit (420; 190) and the output module (460),
At least one processor (410; 120) of the above:
Acquire first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data corresponding to the temperature of the skin,
Based on the above third data, the first data and the second data are corrected,
Based on the changes in the above-mentioned corrected first data and the above-mentioned corrected second data, data related to changes in body water are calculated,
The data related to the calculated change in body moisture is transmitted to the external device (200) through the communication circuit (420; 190), or feedback is output to the output module (460) based on the data related to the calculated change in body moisture.
Electronic devices (400; 101).
In paragraph 5,
At least one processor (410; 120) of the above:
At least as a part of the operation of acquiring the first data, the second data and the third data, the first data, the second data and the third data are set to be received from the external device (200) through the communication circuit (420; 190).
Electronic devices (400; 101).
In paragraph 6,
An electrical sensor (430) for measuring the first biosignal;
An optical sensor (440) for measuring the second biosignal; and
It further includes a temperature sensor (450) for measuring the above temperature,
At least one processor (410; 120) of the above:
At least as a part of the operation of acquiring the first data, the second data and the third data, the first data, the second data and the third data are set to be acquired from the electrical sensor (430), the optical sensor (440) and the temperature sensor (450), respectively.
Electronic devices (400; 101).
In any one of paragraphs 5 to 7,
At least one processor (410; 120) of the above:
At least as part of the operation of correcting the first data and the second data,
It is set to correct the first data and the second data based on the designated first weight and the designated second weight, respectively,
The above-mentioned first weight is specified to change according to the temperature of the skin in response to the first data,
The second weight specified above is specified to change according to the temperature of the skin in response to the second data.
Electronic devices (400; 101).
In Article 8,
The above-mentioned first weight is designated to increase in size based on an increase in the temperature of the skin,
The second weight specified above is specified to decrease in size based on an increase in the temperature of the skin.
Electronic devices (400; 101).
In any one of paragraphs 5 to 9,
At least one processor (410; 120) of the above:
Identify whether the temperature of the above skin changes due to internal factors of the above body,
Based on the above identified results, the first data and the second data are set to be compensated with a designated third weight.
Electronic devices (400; 101).
In any one of paragraphs 5 to 10,
At least one processor (410; 120) of the above:
At least as part of the operation of producing data related to changes in body water of the body, the data related to changes in body water is set to be produced based on the sum of changes in the first data corrected by applying a designated fifth weight and changes in the second data corrected by applying a designated sixth weight,
The sum of the above-mentioned fifth weight and the above-mentioned sixth weight is constant.
Electronic devices (400; 101).
In Article 11,
The above-mentioned fifth weight and the above-mentioned sixth weight are changed based on the change in the temperature of the skin.
Electronic devices (400; 101).
In Article 11,
The above-mentioned fifth weight and the above-mentioned sixth weight are changed based on the change in body moisture.
Electronic devices (400; 101).
In a method of operating an electronic device (400; 101),
An operation (510) of acquiring first data related to a first biosignal corresponding to an electrical characteristic, second data related to a second biosignal corresponding to an optical characteristic, and third data related to a temperature of the skin;
An operation (530) of correcting the first data and the second data based on the third data;
An operation (550) for calculating data related to changes in body water content based on changes in the above-mentioned corrected first data and the above-mentioned corrected second data; and
An operation (570) including transmitting data related to the calculated change in body moisture to an external device (200) through a communication circuit (420; 190), or outputting feedback to an output module (460) based on the data related to the calculated change in body moisture.
How it works.
In Article 14,
The operation (510) of obtaining the first data, the second data and the third data receives the first data, the second data and the third data from the external device (200) through the communication circuit (420; 190).
How it works.
In Article 14,
The operation (510) of acquiring the first data, the second data and the third data receives the first biosignal, the second biosignal and the third biosignal from an electrical sensor (430) measuring the first biosignal, an optical sensor (440) measuring the second biosignal and a temperature sensor (450) measuring the temperature, respectively.
How it works.
In any one of claims 14 to 16,
The operation (530) of correcting the first data and the second data corrects the first data and the second data based on the designated first weight and the designated second weight, respectively.
The above-mentioned first weight is specified to change according to the temperature of the skin in response to the first data,
The second weight specified above is specified to change according to the temperature of the skin in response to the second data.
How it works.
In any one of paragraphs 14 to 17,
An operation (520) for identifying whether the temperature of the skin above changes due to internal factors of the body; and
Based on the above identified result, further comprising an operation (525) of correcting the first data and the second data with a designated third weight.
How it works.
In any one of claims 14 to 18,
The operation (550) for calculating data related to the change in body water of the body calculates data related to the change in body water based on the sum of the change in the first data corrected by applying the specified fifth weight and the change in the second data corrected by applying the specified sixth weight.
The sum of the above-mentioned fifth weight and the above-mentioned sixth weight is constant.
How it works.
In any one of paragraphs 14 to 19,
The above-mentioned fifth weight and the above-mentioned sixth weight are changed based on at least one of a change in the temperature of the skin or a change in the body water.
How it works.

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