WO2022124551A1

WO2022124551A1 - Wearable electronic device comprising multiple electrodes

Info

Publication number: WO2022124551A1
Application number: PCT/KR2021/014207
Authority: WO
Inventors: 박재혁; 장남석; 박정민
Original assignee: 삼성전자 주식회사
Priority date: 2020-12-10
Filing date: 2021-10-14
Publication date: 2022-06-16
Also published as: KR20220082291A

Abstract

A wearable electronic device is disclosed. The wearable electronic device may: measure a first contact impedance, a second contact impedance, a third contact impedance, and a fourth contact impedance corresponding to a first electrode, a second electrode, a third electrode, and a fourth electrode respectively by using a contact impedance measurement module; identify the degree of contact of each of multiple areas on a rear plate, including a first area, a second area, a third area, and a fourth area, with at least a part of the body of a user on the basis of the measured contact impedances; and display a user interface representing the degree of contact of each of the multiple areas on a display.

Description

Wearable electronic device including a plurality of electrodes

Embodiments disclosed in this document relate to a wearable electronic device including a plurality of electrodes.

In recent years, as wearable electronic devices have become widespread, consumers' demands for wearable electronic devices that provide more diverse functions are increasing. By wearing the wearable electronic device on at least a part of the body, the user can conveniently and easily receive various functions provided by the wearable electronic device.

For example, technologies for detecting user's biometric information using a wearable electronic device are being studied. By sensing biometric information using a wearable electronic device, various health care services for users may be provided. In order to provide a more accurate health care service, more accurate biometric information sensing methods are being studied.

When biometric information is sensed using the wearable electronic device, accuracy of biosignals detected by the user's wearing environment and/or wearing state may be reduced.

Various embodiments of the present document identify a state worn by a user using a plurality of electrodes, and display a user interface including wearing guide information by classifying the degree of contact for each of the regions corresponding to the plurality of electrodes. To provide a wearable electronic device that

A wearable electronic device according to an embodiment disclosed herein includes a housing including a front plate and a rear plate facing in a direction opposite to the front plate, and a display viewable through at least a portion of the front plate , a biocontact circuit disposed on the back plate and comprising a first electrode, a second electrode, a third electrode, and a fourth electrode, a contact impedance measurement module, a processor, and a memory operatively coupled to the processor wherein the memory, when executed, causes the processor to use the contact impedance measurement module to configure first contacts corresponding to the first electrode, the second electrode, the third electrode, and the fourth electrode, respectively. the user of a plurality of regions on the back plate comprising a first region, a second region, a third region, and a fourth region, measuring an impedance, a second contact impedance, a third contact impedance, and a fourth contact impedance; one or more instructions for respectively identifying a degree of contact with respect to at least a part of the body based on the measured contact impedances, and displaying a user interface indicating the degree of contact of each of the plurality of regions on the display; can be saved

In a method for a wearable electronic device to measure a contact impedance according to an embodiment disclosed in this document, the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on the rear plate using the contact impedance measurement module. Measuring a first contact impedance, a second contact impedance, a third contact impedance, and a fourth contact impedance corresponding to the rear plate including a first region, a second region, a third region, and a fourth region An operation of identifying a degree of contact of a plurality of regions on at least a part of a user's body based on the measured contact impedances, and an operation of displaying a user interface indicating the degree of contact of each of the plurality of regions on a display; may include

According to various embodiments of the present document, the wearable electronic device measures the contact impedance corresponding to each of a plurality of electrodes, and displays wearing guide information including wearing information of a plurality of regions corresponding to each of the electrodes to intuitively display the wearing guide information. can provide a user experience. For example, the wearable electronic device may more accurately detect different contact degrees of a plurality of regions in contact with a part of the user's body.

The wearable electronic device may provide the user with wearing guide information between the electrode and at least a part of the user's body (eg, wrist), so that various functions of measuring biometric information may be performed more efficiently and more accurate biometric data may be obtained.

In addition, various effects directly or indirectly identified through this document may be provided.

1 is a block diagram of an electronic device in a network according to various embodiments of the present disclosure;

2 is a block diagram illustrating components of a wearable electronic device according to an exemplary embodiment.

3 is a plan view illustrating a front surface and a rear surface of a wearable electronic device according to an exemplary embodiment.

4 is a circuit diagram illustrating a biocontact circuit included in a wearable electronic device according to an exemplary embodiment.

5 is a plan view illustrating a rear surface of a wearable electronic device according to an exemplary embodiment.

6 illustrates wearing guide information corresponding to various functions provided by the wearable electronic device according to an exemplary embodiment.

7 illustrates a user interface displayed in various forms by the wearable electronic device according to an exemplary embodiment.

8 illustrates a user interface displayed by a wearable electronic device in various forms according to an exemplary embodiment.

9 is a flowchart illustrating an operation of a wearable electronic device according to an exemplary embodiment.

10 is a flowchart illustrating an operation of a wearable electronic device according to an exemplary embodiment.

In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of this document are included. .

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through at least one of the servers 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 may be included. In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 may use less power than the main processor 121 or may be set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the co-processor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ). The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

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

The input module 150 may receive a command or data to be used in a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may 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 may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . A sound may be output through the electronic device 102 (eg, a speaker or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may 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, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an 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 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

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

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

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

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a LAN (local area network) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

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

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, 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 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( eg commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external

electronic devices

102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more external

electronic devices

102 , 104 , or 108 . For example, when the electronic device 101 is to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the 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 a 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, 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 using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

2 is a block diagram 200 illustrating components of a wearable electronic device according to an exemplary embodiment.

The configuration of the wearable electronic device 201 (eg, the electronic device 101 of FIG. 1 ) illustrated in FIG. 2 is exemplary and embodiments of the present document are not limited thereto. For example, the wearable electronic device 201 may include components not shown in FIG. 2 (eg, the audio module 170, the haptic module 179, the battery 189, and/or the antenna module 197 of FIG. 1 ). ) may be further included, or at least some of the illustrated components may not be included.

According to an embodiment, the wearable electronic device 201 includes a processor 220 (eg, the processor 120 of FIG. 1 ), a memory 230 (eg, the memory 130 of FIG. 1 ), and a display 260 ( Example: display module 160 of FIG. 1 ), and/or sensor 276 (eg, sensor module 176 of FIG. 1 ).

The processor 220 is electrically or operatively coupled to other components of the wearable electronic device 201 (eg, the memory 230 , the display 260 , and/or the sensor 276 ). It may be coupled (or connected) and set to control other components of the wearable electronic device 201 .

The processor 220 uses a contact impedance measuring module (not shown) included in the wearable electronic device 201 (eg, the contact impedance measuring module 440 of FIG. 4 ), and a rear plate (not shown) (eg, FIG. 4 ). Contact impedances respectively corresponding to the plurality of electrodes (not shown) (eg, the plurality of electrodes 320 of FIG. 3 ) disposed on the rear plate 312 of FIG. 3 ) may be measured. The processor 220 determines whether a plurality of regions corresponding to the plurality of electrodes on the rear plate contact at least a part of the user's body (eg, a wrist) and/or information on the degree of contact based on the measured contact impedances. can be identified by The processor 220 may display a user interface indicating the identified degree of contact on the display 260 .

The memory 230 may store commands or data. For example, the memory 230 may store information related to a plurality of functions provided by the wearable electronic device 201 . For example, the memory 230 may store a plurality of target impedances respectively corresponding to the plurality of functions. In another example, the memory 230 may include a sensor 276 (eg, a heartbeat recognition sensor, a motion sensor, an accelerometer, a gyro sensor, a barometric pressure sensor, an ambient light sensor, a blood pressure sensor, an electrocardiogram sensor, or a photoplethysmogram (PPG)). Various data used and/or acquired by the sensor) may be stored.

The display 260 may display a user interface related to various functions provided by the wearable electronic device 201 . Also, the display 260 may detect a touch input (eg, a user touch input) for one area. For example, the processor 220 may display a user interface indicating a degree of contact between each of a plurality of regions included in the rear plate of the wearable electronic device 201 to at least a part of the user's body (eg, a wrist) on the display 260 . ) can be displayed. The user interface may include at least one icon. The icon may be referred to as a graphic user interface (GUI) indicating a degree of contact with a part of the user's body with a region of the rear plate corresponding to the position where the icon is displayed on the display 260 . For example, the processor 220 may display on the display 260 a user interface including information that the plurality of regions of the wearable electronic device 201 should further contact at least a part of the user's body.

Sensor 276 may include various types of sensors. The processor 220 may identify and/or determine various pieces of information related to the user through the data acquired using the sensor 276 . For example, the sensor 276 may include a plurality of optical sensors (eg, photoplethysmogram (PPG) sensors) disposed on a rear plate of the wearable electronic device 201 . The optical sensor may include a light source emitting light and a plurality of photo detectors detecting the light. The structure and/or function of the optical sensor may be described in more detail with reference to FIG. 3 to be described later. As another example, the sensor 276 may further include a plurality of electrical sensors (eg, electrocardiogram (ECG)) disposed on a rear plate of the wearable electronic device 201 . The processor 220 may acquire biometric information of a user who wears the wearable electronic device 201 using an electrical sensor. For example, the ECG sensor may acquire an ECG signal through at least one of a plurality of electrodes included in the wearable electronic device 201 . The sensor 276 may include both the optical sensor and the electrical sensor described above. In this case, for example, the processor 220 may selectively use an optical sensor and/or an electrical sensor as needed.

3 is a plan view 300 illustrating the front and rear surfaces of the wearable electronic device according to an exemplary embodiment.

Reference numerals

300a and 300b of FIG. 3 denote the front and rear surfaces of the wearable electronic device (eg, the electronic device 101 of FIG. 1 or the wearable electronic device 201 of FIG. 2 ), respectively. For example, the front side of the wearable electronic device is referred to as one side including the display 360 (eg, the display module 160 of FIG. 1 or the display 260 of FIG. 2 ), and the rear side is worn by the user. It may be referred to as a surface in contact with at least a part of the user's body. In the following embodiments, an operation performed by the wearable electronic device may be referred to as an operation of a processor (eg, the processor 120 of FIG. 1 or the processor 220 of FIG. 2 ).

The wearable electronic device includes a housing 310 , a plurality of electrodes 320 , an optical sensor 340 (eg, the sensor module 176 of FIG. 1 ), a binding member 350 , and a display 360 (eg, FIG. 1 ). 1 display module 160).

The housing 310 may include a front plate 311 and a rear plate 312 facing each other. For example, the front plate 311 of the housing 310 may be positioned on the front surface of the housing 310 , and the rear plate 312 may be positioned on the rear surface facing the front surface of the housing 310 . For example, the housing 310 may include a side member (not shown) positioned between the front and rear surfaces and physically connecting the front and rear surfaces. For example, the side member of the housing 310 may include at least a portion of the front plate 311 or at least a portion of the rear plate 312 . As another example, the side member of the housing 310 may be disposed as a separate member. The housing 310 may surround and protect components included in the wearable electronic device or may fix some components.

The plurality of electrodes 320 includes two

electrodes

321 and 322 disposed on the side surface of the housing 310 and four

electrodes

302 , 304 , 306 , and 308 disposed on the rear surface of the housing 310 . may include The first electrode 302 , the second electrode 304 , the third electrode 306 , and the fourth electrode 308 disposed on the back side are one component of a biocontact circuit (not shown) included in the wearable electronic device. may be referred to as For example, the first electrode 302 and the second electrode 304 are disposed substantially symmetrically with the third electrode 306 and the fourth electrode 308 about one axis, respectively, and the first electrode 302 . and the third electrode 306 may be disposed to be substantially symmetrical to the second electrode 304 electrode and the fourth electrode 308, respectively, about the other axis orthogonal to the one axis. The plurality of electrodes 320 may collect biosignals at different positions, respectively.

The optical sensor 340 may further include an optical signal processing module (not shown) electrically connected to the light source 342 and the plurality of photodetectors 341 . The optical signal processing module may obtain and process a current signal generated based on the amount of light detected by the plurality of photodetectors 341 . For example, the optical sensor 340 may include a photoplethysmogram (PPG) sensor. The optical signal processing module may detect the user's biometric information or detect whether the user wears the wearable electronic device using electrical signals (eg, PPG signals) acquired through the plurality of photodetectors 341 .

The plurality of photodetectors 341 may detect light and sense the intensity of the detected light. For example, the plurality of photodetectors 341 may output a current signal having a magnitude corresponding to the detected amount of light. The plurality of photodetectors 341 may be disposed to surround the light source 342 . Although the wearable electronic device is illustrated as including eight photodetectors 341 in FIG. 3 , the number and/or location of the photodetectors according to embodiments of the present document is not limited thereto.

The light source 342 may include at least one light emitting device (eg, a light emitting diode (LED)) for irradiating light having a wavelength in a specified range. For example, each light emitting element may be set to emit light of different wavelengths. As another example, at least some of each of the light emitting devices may be set to emit light of the same wavelength. As another example, each light emitting device may emit light at the same time point or may emit light based on a specified pattern.

The binding member 350 may be connected to at least a portion of the housing 310 and may be configured to detachably attach the wearable electronic device to at least a portion of a user's body. For example, the binding member 350 may be detachably attached to at least a partial region of the housing 310 using a locking member (not shown). The fastening member 350 may include one or more of a fixing member (not shown), a fixing member fastening hole (not shown), a band guide member (not shown), and a band fixing ring (not shown). The binding member 350 may be formed of various materials and shapes. For example, the binding member 350 may be formed so that the integral and plurality of unit links can flow with each other by using a woven fabric, leather, rubber, urethane, metal, ceramic, or a combination of at least two of the above materials.

The display 360 may be externally viewed through at least a portion of the front plate 311 . For example, the display 360 may emit light having at least one wavelength and may be set to provide visual information (eg, a user interface) to a user. Also, the display 360 may receive an external input (eg, a user's touch input).

According to an embodiment, when the wearable electronic device is worn by the user, at least one area of the back plate 312 may come into contact with at least a part of the user's body (eg, wrist). For example, at least some of the plurality of

electrodes

302 , 304 , 306 , and 308 disposed on the back plate 312 may contact at least a portion of the user's body. When a user intends to measure biometric information, the user may contact at least a portion of the plurality of

electrodes

321 and 322 disposed on the side of the finger of the other hand not wearing the wearable electronic device.

According to an embodiment, when the user wears the wearable electronic device, at least one of the plurality of

electrodes

302 , 304 , 306 , and 308 disposed on the back plate 312 is in contact with at least a part of the user's body. A contact impedance may be formed on the electrode. The contact impedance may be different depending on an external environment (eg, temperature or humidity), a wearing state (eg, a contact area or a contact region), and/or a user's skin type. According to an embodiment, when a bio-signal is collected using an electrical signal, the contact impedance may affect the quality of the bio-signal to be collected. For example, as the contact impedance is changed, the noise ratio may increase or the accuracy of the biosignal may be deteriorated.

According to an embodiment, the wearable electronic device may measure the contact impedance formed in at least one of the plurality of

electrodes

302 , 304 , 306 , and 308 using a contact impedance measuring module (not shown). For example, the wearable electronic device has a first contact impedance, a second contact impedance, and a first contact impedance corresponding to the first electrode 302 , the second electrode 304 , the third electrode 306 , and the fourth electrode 308 , respectively; A third contact impedance and a fourth contact impedance may be measured. For example, the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance are the first electrode 302 , the second electrode 304 , the third electrode 306 , and the fourth electrode, respectively. It may be referred to as a contact impedance formed between 308 and at least a portion of the user's body in contact.

According to an embodiment, the rear plate 312 of the wearable electronic device may be divided into a plurality of regions. The division of the area of the rear plate 312 may be the division of a logical area. For example, the back plate 312 may have a first region corresponding to a region adjacent to the first electrode 302 , a second region corresponding to a region adjacent to the second electrode 304 , and a second region adjacent to the third electrode 306 . It may be divided into a third region corresponding to the region and a fourth region corresponding to a region adjacent to the fourth electrode 308 . The wearable electronic device may identify a degree of contact in which the first area, the second area, the third area, and the fourth area are in contact with at least a part of the user's body based on the measured contact impedances. The wearable electronic device may display a user interface indicating a contact degree of each of the plurality of areas on the display 360 . The wearable electronic device may intuitively provide guide information for lowering the contact impedance by providing the user interface to the user.

According to an embodiment, the wearable electronic device may provide a function of collecting and providing various biometric information associated with a user. For example, the wearable electronic device includes at least one of a heart rate (HR) measurement function, a saturation of percutaneous oxygen measurement function, a blood pressure measurement function, an electrocardiogram (ECG) measurement function, or a bioelectrical impedance analysis (BIA) measurement function. can provide For example, the wearable electronic device may store a plurality of target impedances corresponding to each of the plurality of functions in a memory (eg, the memory 130 of FIG. 1 ). The wearable electronic device identifies a target impedance corresponding to the specified function in response to an execution command of the specified function, and compares the measured contact impedances to display the degree of contact of one region of the rear plate 312 on the display 360 A user interface can be displayed.

In FIG. 3 , the wearable electronic device is illustrated as including six electrodes, but this is exemplary and various embodiments of the present document are not limited thereto. For example, the wearable electronic device includes two of the first electrode 302 , the second electrode 304 , the third electrode 306 , and the fourth electrode 308 disposed on one region of the back plate 312 . The contact impedance may be measured using the electrode and the plurality of

electrodes

321 and 322 disposed on the side surface. In this case, the user touches the plurality of

electrodes

321 and 322 arranged on the side surface with a finger, so that the wearable electronic device can measure the contact impedance using the plurality of

electrodes

321 and 322 arranged on the side surface. have. For another example, at least one electrode may be additionally disposed on a part of the wearable electronic device. For example, at least one electrode in addition to the illustrated four electrodes may be further disposed on the rear plate 312 of the wearable electronic device. Meanwhile, with reference to FIG. 5 , an operation of the wearable electronic device displaying various user interfaces based on different contact impedance measurement results may be described below.

4 is a circuit diagram 400 illustrating a biocontact circuit included in a wearable electronic device according to an exemplary embodiment.

According to an embodiment, the wearable electronic device (eg, the electronic device 101 of FIG. 1 or the wearable electronic device 201 of FIG. 2 ) may include a biocontact circuit 410 and a contact impedance measurement module 440 . have. The wearable electronic device includes a plurality of

electrodes

411, 412, 413, and 414 (eg, the first electrode 302 of FIG. 3 ) disposed on one surface of the wearable electronic device using the contact impedance measurement module 440; Contact impedances corresponding to the second electrode 304 , the third electrode 306 , and the fourth electrode 308 may be measured. Referring to FIG. 4 , the biocontact circuit 410 may be, for example, a component (eg, a biosensor) included in the sensor module 176 of FIG. 1 .

The biocontact circuit 410 may include four

electrodes

411 , 412 , 413 , and 414 and four

circuit elements

431 , 432 , 433 , and 434 . The

electrodes

411 , 412 , 413 , and 414 included in the biocontact circuit 410 are disposed on a surface (eg, a rear surface) of the wearable electronic device so as to be able to contact at least a part of the user's body, and At least a portion may be electrically connected to each other. For example, the first electrode 411 may be connected to the contact impedance measurement module 440 through a first circuit element 431 electrically connected to the feeding port 445 of the contact impedance measurement module 440 . The second electrode 412 may be connected to the contact impedance measurement module 440 through a second circuit element 432 electrically connected to the current measurement port 446 of the contact impedance measurement module 440 . The third electrode 413 may be connected to the contact impedance measurement module 440 through a third circuit element 433 electrically connected to the first voltage measurement port 447 of the contact impedance measurement module 440 . The fourth electrode 414 may be connected to the contact impedance measurement module 440 through a fourth circuit element 434 electrically connected to the second voltage measurement port 448 of the contact impedance measurement module 440 . Each of the

circuit elements

431 , 432 , 433 , and 434 includes an electronic component (eg, a capacitor and/or a resistor) for removing a DC component from an electrical signal flowing from the connected port to the corresponding electrode (or vice versa). may include The

circuit elements

431 , 432 , 433 , and 434 may each have Z _S1 , Z _S2 , Z _S3 , and Z _S4 as impedance components given during circuit design, and these impedance components may be referred to as characteristic impedances. . An impedance component Z _C1 , Z _C2 , Z _C3 , and Z _C4 may be generated between at least a part of the user's body and the

electrodes

411 , 412 , 413 , and 414 , respectively, and this may be referred to as a contact impedance. Z _C1 , Z _C2 , Z _C3 , and Z _C4 may be referred to as a first contact impedance, a second contact impedance, a third contact impedance, and a fourth contact impedance, respectively. The contact impedances may change according to a surface condition (or skin condition) of the user's body. Also, the contact impedances may change as the frequency of the applied electrical signal changes. An impedance component existing between the contact impedances is Z _B , which may be referred to as a bio-impedance. For example, impedance components Z _P1 , Z _P2 , Z _P3 , and Z _P4 that are not intended during circuit design, respectively, between the

electrodes

411 , 412 , 413 , and 414 and a ground (eg, the ground of an electronic device), respectively This may be parasitic, and this may be referred to as a parasitic impedance. An electrical signal (eg, current and/or voltage) may leak from the biocontact circuit 410 to the ground due to a parasitic component, and as a result, an error may occur in the bioimpedance to be obtained due to the leakage of the electrical signal. The parasitic impedance value may be obtained through an impedance analyzer (not shown).

According to an embodiment, the contact impedance measurement module 440 includes a power supply port 445 , a current measurement port 446 , a first voltage measurement port 447 , a second voltage measurement port 448 , and an AC signal generator 441 . ), an ammeter 442 , and a voltmeter 443 . The AC signal generator 441 may generate an electrical signal, and the generated electrical signal may be applied to the biocontact circuit 410 through the power supply port 445 . The ammeter 442 may receive an electrical signal from the biocontact circuit 410 through the current measurement port 446, measure the current of the received electrical signal, and send it to the processor (eg, the processor 120 of FIG. 1). can transmit The voltmeter 443 may measure a voltage between the first voltage measurement port 447 and the second voltage measurement port 448 and transmit it to the processor.

The circuit diagram 400 shown in FIG. 4 is illustrative, and various embodiments of the present document are not limited thereto. For example, the circuit diagram 400 may further include at least one switch. At least one switch included in the circuit diagram 400 may include components in the circuit diagram 400 (eg, a feed port 445 , a current measurement port 446 , a first voltage measurement port 447 , and/or a second It is possible to change the electrical connection path between the voltage measurement ports 448). For example, the at least one switch may change an electrical connection path to measure a voltage using a component referred to as the power supply port 445 and a component referred to as the current measurement port 446 . As another example, the at least one switch may change an electrical connection path to measure voltage or current using a component referred to as the power supply port 445 and a component referred to as the first voltage measurement port 447 . As another example, the at least one switch may change an electrical connection path to measure a voltage or current using a component referred to as the power supply port 445 and a component referred to as the second voltage measurement port 448 . As another example, the wearable electronic device may further include at least one electrode in addition to the four

electrodes

411 , 412 , 413 , and 414 illustrated in FIG. 4 . As an example, the wearable electronic device may include eight electrodes disposed on a rear plate (eg, the rear plate 312 of FIG. 3 ). In this case, the wearable electronic device may measure the contact impedance by using four of the eight electrodes disposed on the rear plate. As another example, the wearable electronic device may include six electrodes disposed on the back plate and two electrodes disposed on the side surface (eg, a plurality of

electrodes

321 and 322 disposed on the side surface of FIG. 3 ). . In this case, the wearable electronic device may measure the contact impedance using two electrodes among the six electrodes disposed on the back plate and two electrodes disposed on the side surface.

5 is a plan view 500 illustrating a rear surface of a wearable electronic device according to an exemplary embodiment.

According to an embodiment, the wearable electronic device (eg, the electronic device 101 of FIG. 1 or the wearable electronic device 201 of FIG. 2 ) includes a rear plate (eg, the housing 310 of FIG. 3 ) included in a housing (eg, the housing 310 of FIG. 3 ). 512 (eg, the back plate 312 of FIG. 3 ); 4 electrodes 508). The wearable electronic device may further include a binding member 550 (eg, the binding member 350 of FIG. 3 ). The binding member 550 may include a fixing member (not shown), a fixing member fastening hole (not shown), a band guide member (not shown), and/or a band fixing ring (not shown). A fixing member (not shown) may be configured to fix the housing 310 and the binding member 550 to at least a part of the user's body (eg, a wrist). The fixing member fastening hole (not shown) may fix the housing 310 and the fastening member 550 to a part of the user's body in correspondence to the fixing member (not shown). The band guide member (not shown) is configured to limit the movement range of the fixing member (not shown) when the fixing member (not shown) is fastened with the fixing member fastening hole (not shown), so that the fastening member 550 is the user's body. It can be made to be bound in close contact with a part. The band fixing ring (not shown) may limit the movement range of the fastening member 550 in a state in which the fixing member (not shown) and the fixing member fastening hole (not shown) are fastened.

According to an embodiment, a first electrode 502 , a second electrode 504 , a third electrode 506 , and a fourth electrode 508 may be disposed on one region of the rear plate 512 . For example, the first electrode 502 and the second electrode 504 are disposed substantially symmetrically with the third electrode 506 and the fourth electrode 508 about one axis, respectively, and the first electrode 502 and the third electrode 506 may be disposed to be substantially symmetrical to the second electrode 504 and the fourth electrode 508, respectively, about the other axis orthogonal to the one axis. For example, the rear plate 512 may be divided into a plurality of regions. The division of the area of the rear plate 512 may be the division of a logical area. For example, the back plate 512 may have a first region corresponding to a region adjacent to the first electrode 502 , a second region corresponding to a region adjacent to the second electrode 504 , and adjacent to the third electrode 506 . It may be divided into a third region corresponding to the region and a fourth region corresponding to a region adjacent to the fourth electrode 508 .

According to an embodiment, the wearable electronic device uses a contact impedance measurement module (eg, the contact impedance measurement module 440 of FIG. 4 ) to set a plurality of contact impedances (eg, the contact of FIG. 4 ) respectively corresponding to the plurality of electrodes. Impedances Z _C1 , Z _C2 , Z _C3 , and Z _C4 ) may be measured. For example, the wearable electronic device includes a first contact impedance, a second contact impedance, and a first contact impedance corresponding to the first electrode 502 , the second electrode 504 , the third electrode 506 , and the fourth electrode 508 , respectively; A third contact impedance and a fourth contact impedance may be measured. The wearable electronic device may identify a degree of contact in which the first area, the second area, the third area, and the fourth area are in contact with at least a part of the user's body based on the measured contact impedances. The wearable electronic device may display a user interface indicating the degree of contact of each of the plurality of regions on a display (eg, the display module 160 of FIG. 1 , the display 260 of FIG. 2 , or the display 360 of FIG. 3 ). can

According to an embodiment, the wearable electronic device may display various user interfaces by comparing measured impedance values. For example, when the sum of the first contact impedance and the second contact impedance exceeds the sum of the third contact impedance and the fourth contact impedance, the wearable electronic device displays the first region corresponding to the first electrode 502 and the second contact impedance. It may be determined that the fifth region 503, which is a region between the second regions corresponding to the second electrodes 504, is in contact with at least a part of the user's body with a relatively low contact degree. According to an embodiment, the wearable electronic device may display a user interface including information that the fifth area 503 should be in closer contact with at least a part of the user's body on the display. As another example, when the sum of the first contact impedance and the third contact impedance exceeds the sum of the second contact impedance and the fourth contact impedance, the wearable electronic device includes a first region corresponding to the first electrode 502 and It may be determined that the sixth region 505 , which is one region between the third regions corresponding to the third electrodes 506 , is in contact with at least a part of the user's body with a relatively low contact degree. Accordingly, the wearable electronic device may display a user interface including information indicating that the sixth area 505 should more closely contact at least a part of the user's body on the display. As another example, when the sum of the second contact impedance and the fourth contact impedance exceeds the sum of the first contact impedance and the third contact impedance, the wearable electronic device may include a second region corresponding to the second electrode 504 and It may be determined that the seventh region 507, which is one region between the fourth regions corresponding to the fourth electrode 508, is in contact with at least a part of the user's body with a relatively low contact degree. Accordingly, the wearable electronic device may display a user interface including information indicating that the seventh area 507 should more closely contact at least a part of the user's body on the display. As another example, when the sum of the third and fourth contact impedances exceeds the sum of the first and second contact impedances, the wearable electronic device may display a third region corresponding to the third electrode 506 . and the eighth region 509 , which is a region between the fourth regions corresponding to the fourth electrode 508 , may be determined to be in contact with at least a part of the user's body with a relatively low contact degree. Accordingly, the wearable electronic device may display a user interface including information indicating that the eighth area 508 should more closely contact at least a part of the user's body on the display. According to an embodiment, the wearable electronic device may calculate a difference between contact impedances and display various user interfaces. For example, when the first contact impedance is greater than the fourth contact impedance and the second contact impedance and the third contact impedance have an error within a specified range, the wearable electronic device displays the first region corresponding to the first electrode 502 . It may be determined that at least a part of the user's body is in contact with this relatively low level of contact. Accordingly, the wearable electronic device may display a user interface including information that the first area should more closely contact at least a part of the user's body on the display.

According to an embodiment, the wearable electronic device may provide a plurality of functions related to the user's biometric information. For example, the plurality of functions may include at least one of a heart rate (HR) measurement function, a saturation of percutaneous oxygen measurement function, a blood pressure measurement function, an electrocardiogram (ECG) measurement function, or a bioelectrical impedance analysis (BIA) measurement function. may include The wearable electronic device may store a plurality of target impedances corresponding to a plurality of functions in a memory (eg, the memory 130 of FIG. 1 ). The wearable electronic device may identify a target impedance corresponding to the specified function in response to an execution command of the specified function, and display a user interface indicating the degree of contact of one region of the rear plate on the display by comparing the measured contact impedances. have. For example, the wearable electronic device may identify a first target impedance corresponding to the first function in response to an external input (eg, a user touch input) for executing the first function. According to an embodiment, the wearable electronic device may compare the sum of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance with the first target impedance. For example, when the sum of the contact impedances is equal to or less than the first target impedance, the wearable electronic device determines that the contact level of the rear plate with at least a part of the user's body is good in performing the first function, and executes the first function. have. As another example, when the sum of the contact impedances exceeds the first target impedance, the wearable electronic device may determine that the contact degree of the rear plate to at least a part of the user's body is lower than the target value when performing the first function. . In this case, the wearable electronic device may display a user interface including information indicating that the wearable electronic device should be in closer contact with the display.

According to an embodiment, the wearable electronic device may collect biometric information using a plurality of sensors (eg, the sensor module 176 of FIG. 1 or the sensor 276 of FIG. 2 ). For example, the wearable electronic device may include a plurality of photoplethysmogram (PPG) sensors. As an example, the wearable electronic device compares the magnitudes of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance, and the first electrode 502 , the second electrode 504 , and the third A PPG signal obtained through a PPG sensor adjacent to an electrode corresponding to a contact impedance having the smallest value as a result of the mutual comparison among the electrode 506 and the fourth electrode 508 may be selectively used. As another example, the wearable electronic device may further include an electrocardiogram (ECG) sensor. As an example, the wearable electronic device compares the magnitudes of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance, and the first electrode 502 , the second electrode 504 , and the third An ECG signal obtained through an electrode corresponding to a contact impedance having the smallest value as a result of the mutual comparison among the electrode 506 and the fourth electrode 508 may be selectively used.

In FIG. 5 , a process in which the wearable electronic device measures the contact impedance using the plurality of

electrodes

502 , 504 , 506 , and 508 disposed on the rear plate 512 is described. are not limited thereto. For example, the wearable electronic device may measure the contact impedance by using the plurality of

electrodes

521 and 522 disposed on the side surface (eg, the plurality of

electrodes

321 and 322 disposed on the side surface of FIG. 3 ). have. In this case, the wearable electronic device may measure the contact impedance using two electrodes among the plurality of electrodes disposed on the back plate 512 and the plurality of

electrodes

521 and 522 disposed on the side surfaces.

6 illustrates wearing guide information 600 corresponding to various functions provided by the wearable electronic device according to an exemplary embodiment.

According to an embodiment, the wearable electronic device (eg, the electronic device 101 of FIG. 1 or the wearable electronic device 201 of FIG. 2 ) may interact with each other according to the type of execution function or biometric information of a user wearing the wearable electronic device. Wearing guide information 600 including another optimal contact degree may be stored in a memory (eg, the memory 130 of FIG. 1 or the memory 230 of FIG. 2 ). For example, in the contact degrees 1 to 10 shown in FIG. 6 , a binding member (eg, the binding member 350 of FIG. 3 ) included in the wearable electronic device is connected to at least a portion of the user's body through the fixing member and the fixing member fastening hole. It can be referred to as the degree of binding that is bound to the . As the degree of contact increases, it may be understood that the bonding strength of the wearable electronic device to at least a part of the user's body is high.

According to an embodiment, the 1-1 function may be preferably executed when the degree of contact of the wearable electronic device with at least a part of the user's body is about 3 to 8. For example, the 1-1 function may be referred to as a heart rate (HR) measurement function executed while the user is performing a general movement operation. When the user performs a general movement operation, since the contact level of the wearable electronic device is maintained relatively constant, it may be possible to perform the operation at a relatively low level of contact compared to the function 1-2 to be described later.

According to an embodiment, the function 1-2 may be preferably executed when the degree of contact of the wearable electronic device with at least a part of the user's body is about 5 to 8. For example, the function 1-2 may be referred to as a heart rate (HR) measurement function executed while the user is exercising. When a user performs an exercise, since a noise signal may be generated in an electrical signal transmitted and received for collection of biometric information, it may have to be performed at a relatively high degree of contact compared to the 1-1 function.

According to an embodiment, the second function and the third function may be preferably executed when the degree of contact of the wearable electronic device with at least a part of the user's body is about 5 to 7. For example, the second function and the third function may be referred to as an oxygen saturation measurement function and a blood pressure measurement function, respectively.

According to an embodiment, the fourth function may be preferably executed when the degree of contact of the wearable electronic device with at least a part of the user's body is about 5 to 9. For example, the fourth function may be referred to as an electrocardiogram (ECG) measurement function or a bioelectrical impedance analysis (BIA) measurement function.

7 illustrates a user interface 700 displayed by a wearable electronic device in various forms according to an exemplary embodiment.

Referring to

reference numerals

700a, 700b, 700c, and 700d of FIG. 7 , the wearable electronic device (eg, the electronic device 101 of FIG. 1 or the wearable electronic device 201 of FIG. 2 ) is measured by measuring contact impedances (eg, : By comparing the contact impedances (Z _C1 , Z _C2 , Z _C3 , and Z _C4 ) of FIG. 4 ), various user interfaces can be displayed on the display 760 (eg, the display module 160 of FIG. 1 ) have.

The user interface indicated by reference numeral 700a indicates that the wearable electronic device measures the contact impedance corresponding to the plurality of electrodes using a contact impedance measurement module (eg, the contact impedance measurement module 440 of FIG. 4 ). As a result, the first When the contact impedance and the second contact impedance have higher values than the third contact impedance and the fourth contact impedance, they may be referred to as a displayed user interface. In other words, in the wearable electronic device, the first area and the second area of the rear plate (eg, the rear plate 312 of FIG. 3 ) respectively corresponding to the first contact impedance and the second contact impedance have a relatively low contact degree with the user's body. It can be determined that at least part of the According to an embodiment, in the wearable electronic device, the first-first area 711 and the second-second area of the front plate (eg, the front plate 311 of FIG. 3 ) corresponding to the first area and the second area of the back plate A user interface including an icon (eg, a water droplet icon) designated in the first area 712 may be displayed on the display 760 .

As a result of measuring the contact impedance corresponding to the plurality of electrodes by the wearable electronic device using the contact impedance measurement module, the user interface indicated by reference numeral 700b indicates that the third contact impedance and the fourth contact impedance are the first contact impedance and the second contact impedance. If it has a higher value than the 2 contact impedance, it may be referred to as a displayed user interface. In other words, the wearable electronic device may determine that the third area and the fourth area of the rear plate respectively corresponding to the third contact impedance and the fourth contact impedance are in contact with at least a part of the user's body with a relatively low contact degree. According to an embodiment, the wearable electronic device includes a user including icons designated in the 3-1 region 713 and the 4-1 region 714 of the front plate corresponding to the third region and the fourth region of the rear plate. The interface may be displayed on the display 760 .

In the user interface indicated by reference numeral 700c, as a result of the wearable electronic device measuring the contact impedance corresponding to the plurality of electrodes using the contact impedance measuring module, the second contact impedance and the fourth contact impedance are the first contact impedance and the second contact impedance. 3 If it has a high value compared to the contact impedance, it may be referred to as a displayed user interface. In other words, the wearable electronic device may determine that the second area and the fourth area of the rear plate respectively corresponding to the second contact impedance and the fourth contact impedance are in contact with at least a part of the user's body with a relatively low contact degree. According to an embodiment, the wearable electronic device includes a user including icons designated in the 2-1 region 712 and the 4-1 region 714 of the front plate corresponding to the second region and the fourth region of the rear plate. The interface may be displayed on the display 760 .

In the user interface indicated by reference numeral 700d, as a result of the wearable electronic device measuring the contact impedance corresponding to the plurality of electrodes using the contact impedance measuring module, the first contact impedance and the third contact impedance are the second contact impedance and the second contact impedance. If it has a higher value than the 4 contact impedance, it may be referred to as a displayed user interface. In other words, the wearable electronic device may determine that the first area and the third area of the rear plate respectively corresponding to the first contact impedance and the third contact impedance are in contact with at least a part of the user's body with a relatively low contact degree. According to an embodiment, the wearable electronic device includes a user including icons designated in the 1-1 region 711 and 3-1 region 713 of the front plate corresponding to the first region and the third region of the rear plate. The interface may be displayed on the display 760 .

The user interface according to

reference numerals

700a, 700b, 700c, and 700d may further include various icons and/or text. For example, the user interface may further include a color icon (not shown) displayed on one area of the display 760 . For example, when it is determined that the contact degree of the wearable electronic device is appropriate, the wearable electronic device may display a user interface including a color icon set to a first color (eg, green). As another example, when it is determined that the contact degree of the wearable electronic device is poor, the wearable electronic device may display a user interface including a color icon set to a second color (eg, yellow). As another example, when it is determined that the wearable electronic device has not touched at least a part of the user's body, the wearable electronic device may display a user interface including a color icon set to a third color (eg, red). For another example, the user interface may further include text 750 . The user interface may include text 750 including information that the wearable electronic device is executing various functions (eg, measuring bioimpedance). For example, when the wearable electronic device is measuring bioimpedance, the user interface may display and provide text 750 including “Body Impedance Measuring” to the user.

In FIG. 7 , a wearable electronic device uses a plurality of electrodes (eg,

electrodes

302 , 304 , 306 , and 308 of FIG. 3 ) disposed on a back plate (eg, back plate 312 of FIG. 3 ). Although a process of measuring the contact impedance is described, embodiments of the present document are not limited thereto. For example, the wearable electronic device may measure the contact impedance by using the plurality of

electrodes

721 and 722 disposed on the side surface (eg, the plurality of

electrodes

321 and 322 disposed on the side surface of FIG. 3 ). have. In this case, the wearable electronic device may measure the contact impedance using two electrodes among the plurality of electrodes disposed on the back plate and the plurality of

electrodes

721 and 722 disposed on the side surfaces.

8 illustrates a user interface 800 displayed in various forms by the wearable electronic device according to an exemplary embodiment.

Referring to

reference numerals

800a and 800b of FIG. 8 , the wearable electronic device (eg, the electronic device 101 of FIG. 1 or the wearable electronic device 201 of FIG. 2 ) corresponds to the sum of the measured contact impedances and the designated function. By comparing target impedances, various user interfaces may be displayed on the display 760 (eg, the display module 160 of FIG. 1 ). The user interface 800 of FIG. 8 shows that the wearable electronic device performs a first function (eg, a heart rate (HR) measurement function, a saturation of percutaneous oxygen measurement function, a blood pressure measurement function, an electrocardiogram (ECG) measurement function, Alternatively, it may be referred to as a user interface displayed on the display 860 in response to an external input (eg, a user touch input) for executing a bioelectrical impedance analysis (BIA) measurement function.

A user interface denoted by reference numeral 800a denotes a first target impedance corresponding to a first function, a first contact impedance obtained using a contact impedance measurement module (eg, the contact impedance measurement module 440 of FIG. 4 ), and a second When the sum of the contact impedances exceeds the first target impedance as a result of comparing the sum of the contact impedance, the third contact impedance, and the fourth contact impedance, the wearable electronic device may be referred to as a user interface displayed on the display 860 . . In other words, the wearable electronic device may determine that the rear plate (eg, the rear plate 312 of FIG. 3 ) is in contact with at least a part of the user's body with a relatively low contact degree compared to a preferred contact degree for performing the first function. have. According to an embodiment, the wearable electronic device includes a first portion of a front plate (eg, the front plate 311 of FIG. 3 ) corresponding to the first region, the second region, the third region, and the fourth region of the rear plate, respectively. A user interface including icons designated in the -1 region 811 , the 2-1 th region 812 , the 3-1 th region 813 , and the 4-1 th region 814 is displayed on the display 860 . can

The user interface indicated by reference numeral 800b may be referred to as a user interface displayed by the wearable electronic device on the display 860 when the sum of the contact impedances is equal to or less than the first target impedance. In other words, the wearable electronic device may determine that the rear plate is in contact with at least a part of the user's body to a desired contact level for executing the first function. According to an exemplary embodiment, icons designated in the 1-1 region 811 , the 2-1 region 812 , the 3-1 region 813 , and the 4-1 region 814 of the front plate are included. A user interface may be displayed on the display 860 .

According to an embodiment, the user interface displayed by the wearable electronic device may further include various types of information. For example, the user interface according to FIG. 8 may further include graphic content 830 including information on the progress of the execution of the first function being executed or stopped. For another example, the user interface may further include the first text content 840 including information indicating that the wearable electronic device is bound to a relatively low (or high) contact degree. As another example, the user interface may further include the second text content 850 including condition information required to perform the first function.

According to an embodiment, a designated icon (eg, a water droplet) may be changed and displayed based on a change in the degree of contact of the wearable electronic device with respect to at least a part of the user's body. For example, when it is determined that the contact degree of one area is appropriate, the wearable electronic device may change and display the inner color of a water droplet icon displayed corresponding to the one area.

According to an embodiment, the wearable electronic device may display the user interface shown in FIG. 8 when a specified condition is satisfied. For example, the wearable electronic device may display the user interface shown in FIG. 8 when continuously measuring the bioimpedance. As another example, when a problem (eg, poor contact) occurs in the bioimpedance measurement process, the wearable electronic device may display a user interface. As another example, the wearable electronic device may display the user interface when receiving a user input for activating the display sensed by the user during the bioimpedance measurement process.

According to an embodiment, in addition to providing visual information (eg, a user interface), the wearable electronic device may provide a guide regarding wearing of the wearable electronic device to the user in various forms. For example, the wearable electronic device may control the haptic module (eg, the haptic module 179 of FIG. 1 ) to generate vibration or movement in a state in which the display is not activated. As another example, the wearable electronic device may control the sound output module (eg, the sound output module 155 of FIG. 1 ) to output a specified sound signal without activating the display. The wearable electronic device may guide the wearing state of the wearable electronic device through vibration, movement, or sound signal.

In FIG. 8 , the wearable electronic device uses a plurality of electrodes (eg,

electrodes

821 and 822 disposed on the side surface (eg, the plurality of

electrodes

821 and 822 disposed on the side surfaces.

9 is an operation flowchart 900 of a wearable electronic device according to an exemplary embodiment.

Referring to FIG. 9 , operations of the wearable electronic device (eg, the wearable electronic device 201 of FIG. 2 ) according to an embodiment may include

operations

905 , 910 , and 915 .

Operations

905 , 910 , and 915 may be performed, for example, by the electronic device 101 illustrated in FIG. 1 .

Operations

905 , 910 , and 915 are instructions that may be performed (or executed) by a processor (eg, the processor 120 of FIG. 1 ) included in the electronic device 101 , for example. It can also be implemented as (instructions).

In operation 905 , the wearable electronic device 201 may measure contact impedances corresponding to the plurality of electrodes. For example, the wearable electronic device 201 includes a plurality of electrodes (eg, the first electrode 302 and the second electrode of FIG. 3 ) disposed on one region of the rear plate (eg, the rear plate 312 of FIG. 3 ) The first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance respectively corresponding to the electrode 304 , the third electrode 306 , and the fourth electrode 308 may be measured. The first electrode 302 is disposed to be substantially symmetrical to the third electrode 306 with respect to an axis crossing the rear plate, and the second electrode 304 is a fourth electrode about the other axis orthogonal to the one axis. It may be disposed substantially symmetrically with the electrode 308 . The wearable electronic device 201 may measure contact impedances using a contact impedance measurement module (eg, the contact impedance measurement module 440 of FIG. 4 ). For example, the contact impedance measuring module may be referred to as a component of the wearable electronic device 201 electrically connected to a biocontact circuit (eg, the biocontact circuit 410 of FIG. 4 ) including a plurality of electrodes.

In operation 910 , the wearable electronic device 201 may identify contact degrees of a plurality of regions. For example, the wearable electronic device 201 may include a first region corresponding to the first electrode 302 , a second region corresponding to the second electrode 304 , a third region corresponding to the third electrode 306 , and a degree of contact with at least a portion of each user's body in the fourth region corresponding to the fourth electrode 308 may be identified. For example, the wearable electronic device 201 may identify the contact degree of each of the plurality of regions based on the contact impedance measured in operation 905 . The division of the above-described area may be a division of a logical area of the rear plate included in the wearable electronic device 201 . Also, although the plurality of regions is described as four regions, the present invention is not limited thereto, and a fifth region, a sixth region, a seventh region, and an eighth region between the plurality of electrodes may be additionally further included.

In operation 915 , the wearable electronic device 201 may display a user interface including a contact degree on a display (eg, the display module 160 of FIG. 1 ). For example, the wearable electronic device 201 may display a user interface indicating a contact degree of each of the plurality of regions identified in operation 910 on the display. The user interface may include an icon (eg, a water droplet icon of FIG. 8 ) corresponding to each area. The icon may be changed and displayed as the degree of contact with at least a part of the user's body in each area changes. The user interface may further include various information and/or content. For example, the user interface may further include graphic content (eg, graphic content 830 of FIG. 8 ) including information on the progress of execution of a specified function that is being executed or stopped. As another example, the user interface may further include first text content (eg, the first text content 840 of FIG. 8 ) including information that the wearable electronic device is bound to a relatively low (or high) contact degree. have. As another example, the user interface may further include second text content (eg, the second text content 850 of FIG. 8 ) including condition information required to perform a specified function.

10 is a flowchart 1000 of an operation of a wearable electronic device according to an exemplary embodiment.

Referring to FIG. 10 , operations of the wearable electronic device (eg, the wearable electronic device 201 of FIG. 2 ) according to an embodiment may include

operations

1005 , 1010 , 1015 , 1017 , and 1020 . . The

operations

1005 , 1010 , 1015 , 1017 , and 1020 may be performed, for example, by the electronic device 101 illustrated in FIG. 1 . The

operations

1005 , 1010 , 1015 , 1017 , and 1020 are performed (or executed) by, for example, a processor included in the electronic device 101 (eg, the processor 120 of FIG. 1 ). ) can also be implemented as instructions.

In operation 1005 , the wearable electronic device 201 may measure contact impedances corresponding to the plurality of electrodes. The description of operation 1005 may be replaced by the description of operation 905 of FIG. 9 .

In operation 1010 , the wearable electronic device 201 may compare a target impedance corresponding to a specified function and the sum of contact impedances. For example, the wearable electronic device 201 may store a plurality of target impedances corresponding to a plurality of functions in a memory (eg, the memory 130 of FIG. 1 ). The wearable electronic device 201 responds to an external input (eg, a user touch input) for executing a first function among a plurality of functions, and a first target impedance and a contact impedance measuring module (eg, a first target impedance corresponding to the first function) The sum of a plurality of contact impedances obtained by using the contact impedance measuring module 440 of FIG. 4 may be compared.

In operation 1015 , when the sum of the contact impedances exceeds the target impedance (eg, in operation 1015 - Yes), the wearable electronic device 201 may perform operation 1020 .

In operation 1015 , when the sum of the contact impedances is equal to or less than the target impedance (eg, operation 1015 - No), the wearable electronic device 201 may perform operation 1017 .

In operation 1017 , the wearable electronic device 201 may execute a specified function. For example, the designated function executed by the wearable electronic device 201 may include a heart rate (HR) measurement function, a saturation of percutaneous oxygen measurement function, a blood pressure measurement function, an electrocardiogram (ECG) measurement function, or a bioelectrical (BIA) measurement function. It may be at least one of an impedance analysis) measurement function.

In operation 1020 , the wearable electronic device 201 may display a user interface on a display (eg, the display module 160 of FIG. 1 ). For example, the user interface may include information that the wearable electronic device 201 should more closely contact at least a part of the user's body. In other words, the user interface may include information on the fastening guide information of the wearable electronic device 201 and various guide information that provides a more appropriate method of wearing the wearable electronic device 201 to the user. The user interface displayed in operation 1020 may further include various types of information and/or content. Information and/or content included in the user interface may be replaced by the description of operation 915 of FIG. 9 .

According to an embodiment, the first region, the second region, the third region, and the fourth region are adjacent to the first electrode, the second electrode, the third electrode, and the fourth electrode, respectively. It may be an area of the rear plate corresponding to the area.

According to an embodiment, the first electrode and the second electrode are respectively disposed symmetrically with the third electrode and the fourth electrode about one axis, and the first electrode and the third electrode are disposed on the one axis The second electrode and the fourth electrode may be symmetrically disposed about another axis orthogonal to each other.

According to an embodiment, the one or more instructions, when executed, cause the processor to indicate that the sum of the first contact impedance and the second contact impedance is the sum of the third contact impedance and the fourth contact impedance. In the case of exceeding, including information that a region corresponding to between the first region corresponding to the first electrode and the second region corresponding to the second electrode should further contact at least a part of the user's body It may be configured to display a user interface on the display.

According to an embodiment, the one or more instructions, when executed, cause the processor to: The first contact impedance is greater than the fourth contact impedance, and the second contact impedance and the third contact impedance are specified. If there is an error within the range, the display may be configured to display a user interface including information that the first region corresponding to the first electrode should further contact at least a part of the user's body.

According to an embodiment, the memory further stores a plurality of target impedances corresponding to a plurality of functions provided by the wearable electronic device, and the one or more instructions, when executed, cause the processor to: In response to an external input for executing a first function among the plurality of functions, a first target impedance corresponding to the first function, the first contact impedance obtained using the contact impedance module, and the second contact It may be configured to compare the sum of the impedance, the third contact impedance, and the fourth contact impedance.

According to an embodiment, the one or more instructions, when executed, cause the processor to execute the first function if the sum of the contact impedances is equal to or less than the first target impedance, and the sum of the contact impedances When the first target impedance is exceeded, a user interface including information indicating that the wearable electronic device should further contact at least a part of the user's body may be set to be displayed on the display.

According to an embodiment, the at least one sensor includes a plurality of photoplethysmogram (PPG) sensors, and the one or more instructions, when executed, cause the processor to: the first contact impedance, the second The magnitudes of the contact impedance, the third contact impedance, and the fourth contact impedance are compared with each other, and the smallest value as a result of the mutual comparison among the first electrode, the second electrode, the third electrode, and the fourth electrode It may be set to use a PPG signal obtained through a PPG sensor adjacent to an electrode corresponding to a contact impedance having .

According to an embodiment, the at least one sensor includes an electrocardiogram (ECG) sensor, and the one or more instructions, when executed, cause the processor to: the first contact impedance, the second contact impedance , the third contact impedance and the fourth contact impedance are compared with each other, and the smallest value of the first electrode, the second electrode, the third electrode, and the fourth electrode is the smallest value as a result of the mutual comparison. It may be set to use the ECG signal obtained through the electrode corresponding to the contact impedance.

According to an embodiment, the plurality of functions include a heart rate (HR) measurement function, a saturation of percutaneous oxygen measurement function, a blood pressure measurement function, an electrocardiogram (ECG) measurement function, or a bioelectrical impedance analysis (BIA) measurement. It may include at least one of the functions.

According to an embodiment, in the operation of displaying a user interface indicating the degree of contact of each of the plurality of regions on the display, the sum of the first contact impedance and the second contact impedance is the third contact impedance and the When the sum of the fourth contact impedances is exceeded, a region corresponding to between the first region corresponding to the first electrode and the second region corresponding to the second electrode further contacts at least a part of the user's body. It may include an operation of further displaying a user interface including information that should be performed on the display.

According to an embodiment, the displaying of the user interface indicating the degree of contact of each of the plurality of regions on the display may include: the first contact impedance being greater than the fourth contact impedance, the second contact impedance and the When the third contact impedance has an error within a specified range, further displaying a user interface including information that the first region corresponding to the first electrode should further contact at least a part of the user's body on the display may include

According to an embodiment, in a method for a wearable electronic device to measure a contact impedance, in response to an external input for executing a first function among a plurality of functions provided by the wearable electronic device, a plurality of target impedances stored in a memory Among them, the sum of the first target impedance corresponding to the first function and the first contact impedance obtained using the contact impedance module, the second contact impedance, the third contact impedance, and the fourth contact impedance It may further include an operation of comparing.

According to an embodiment, in the method of measuring a contact impedance by the wearable electronic device, when the sum of the contact impedances is equal to or less than the first target impedance, executing the first function and the sum of the contact impedances is the first target The method may further include displaying, on the display, a user interface including information indicating that the wearable electronic device should further contact at least a part of the user's body when the impedance is exceeded.

According to an embodiment, a method for a wearable electronic device to measure a contact impedance includes: comparing magnitudes of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance; A PPG signal obtained through a photoplethysmogram (PPG) sensor adjacent to the electrode corresponding to the contact impedance having the smallest value as a result of the mutual comparison among the first electrode, the second electrode, the third electrode, and the fourth electrode It may further include an operation to use.

According to an embodiment, a method for a wearable electronic device to measure a contact impedance includes: comparing magnitudes of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance; Among the first electrode, the second electrode, the third electrode, and the fourth electrode, the method may further include using an ECG signal obtained through an electrode corresponding to a contact impedance having the smallest value as a result of the mutual comparison. can

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "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 "A , B, or C" each may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish the element from other elements in question, and may refer to elements in other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

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

According to various embodiments of the present document, one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101) may be implemented as software (eg, the program 140) including For example, a processor (eg, processor 120 ) of a device (eg, electronic device 101 ) may call at least one command among one or more commands stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not include a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store™) or on two user devices ( It can be distributed online (eg download or upload), directly between smartphones (eg smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, 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 component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

Claims

A wearable electronic device comprising:

a housing including a front plate and a rear plate facing in a direction opposite to the front plate;

a display viewable through at least a portion of the front plate;

a biocontact circuit disposed on the back plate and including a first electrode, a second electrode, a third electrode, and a fourth electrode;

contact impedance measurement module;

processor; and

a memory operatively coupled to the processor; wherein the memory, when executed, causes the processor to:

A first contact impedance, a second contact impedance, a third contact impedance, and a fourth corresponding to the first electrode, the second electrode, the third electrode, and the fourth electrode, respectively, using the contact impedance measuring module Measure the contact impedance,

Each of a plurality of regions on the back plate including a first region, a second region, a third region, and a fourth region identify a degree of contact with at least a part of the user's body based on the measured contact impedances, and ,

and storing one or more instructions for displaying a user interface indicating the degree of contact of each of the plurality of regions on the display.
The method according to claim 1,

The first region, the second region, the third region, and the fourth region are the rear surfaces corresponding to regions adjacent to the first electrode, the second electrode, the third electrode, and the fourth electrode, respectively. One area of the plate, a wearable electronic device.
The method according to claim 1,

The first electrode and the second electrode are respectively disposed symmetrically with the third electrode and the fourth electrode about one axis,

The first electrode and the third electrode are respectively disposed symmetrically with the second electrode and the fourth electrode about another axis orthogonal to the one axis.
4. The method according to claim 3,

The one or more instructions, when executed, cause the processor to:

When the sum of the first contact impedance and the second contact impedance exceeds the sum of the third contact impedance and the fourth contact impedance, the first region and the second electrode corresponding to the first electrode The wearable electronic device is set to display on the display a user interface including information that a region corresponding to the second region to be in contact with at least a part of the user's body.
4. The method according to claim 3,

The one or more instructions, when executed, cause the processor to:

When the first contact impedance is greater than the fourth contact impedance and the second contact impedance and the third contact impedance have an error within a specified range, the first region corresponding to the first electrode is the body of the user. A wearable electronic device configured to display on the display a user interface including information that at least a portion should be further contacted.
The method according to claim 1,

The memory further stores a plurality of target impedances corresponding to a plurality of functions provided by the wearable electronic device,

The one or more instructions, when executed, cause the processor to:

In response to an external input for executing a first function among the plurality of functions, a first target impedance corresponding to the first function, the first contact impedance obtained using the contact impedance module, and the second contact The wearable electronic device is configured to compare the sum of the impedance, the third contact impedance, and the fourth contact impedance.
7. The method of claim 6,

The one or more instructions, when executed, cause the processor to:

When the sum of the contact impedances is equal to or less than the first target impedance, the first function is executed;

When the sum of the contact impedances exceeds the first target impedance, the wearable electronic device is configured to display on the display a user interface including information that the wearable electronic device should further contact at least a part of the user's body.
7. The method of claim 6,

The at least one sensor includes a plurality of photoplethysmogram (PPG) sensors,

The one or more instructions, when executed, cause the processor to:

comparing magnitudes of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance;

set to use a PPG signal obtained through a PPG sensor adjacent to an electrode corresponding to a contact impedance having the smallest value as a result of the mutual comparison among the first electrode, the second electrode, the third electrode, and the fourth electrode , wearable electronic devices.
7. The method of claim 6,

The at least one sensor includes an electrocardiogram (ECG) sensor,

The one or more instructions, when executed, cause the processor to:

comparing magnitudes of the first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact impedance;

wearable electronics configured to use an ECG signal obtained through an electrode corresponding to a contact impedance having the smallest value as a result of the mutual comparison among the first electrode, the second electrode, the third electrode, and the fourth electrode Device.
7. The method of claim 6,

The plurality of functions include at least one of a heart rate (HR) measurement function, a saturation of percutaneous oxygen measurement function, a blood pressure measurement function, an electrocardiogram (ECG) measurement function, or a bioelectrical impedance analysis (BIA) measurement function which is a wearable electronic device.
A method for a wearable electronic device to measure contact impedance, the method comprising:

The first contact impedance, the second contact impedance, the third contact impedance, and the fourth contact corresponding to the first electrode, the second electrode, the third electrode, and the fourth electrode disposed on the rear plate by using the contact impedance measurement module measuring the impedance;

identifying a degree of contact of a plurality of areas on the rear plate including a first area, a second area, a third area, and a fourth area to at least a part of a user's body based on the measured contact impedances; and

displaying a user interface indicating the degree of contact of each of the plurality of areas on a display; A method comprising
12. The method of claim 11,

The first region, the second region, the third region, and the fourth region are the plates corresponding to regions adjacent to the first electrode, the second electrode, the third electrode, and the fourth electrode, respectively. An area of the method.
12. The method of claim 11,

The first electrode is disposed symmetrically with the third electrode about one axis,

The second electrode is disposed symmetrically with the fourth electrode with respect to another axis orthogonal to the one axis.
14. The method of claim 13,

The operation of displaying a user interface indicating the degree of contact of each of the plurality of areas on the display comprises:

When the sum of the first contact impedance and the second contact impedance exceeds the sum of the third contact impedance and the fourth contact impedance, the first region and the second electrode corresponding to the first electrode further displaying, on the display, a user interface including information that an area corresponding to the second area to be in contact with at least a part of the user's body is further provided; A method comprising
14. The method of claim 13,

The operation of displaying a user interface indicating the degree of contact of each of the plurality of areas on the display comprises:

When the first contact impedance is greater than the fourth contact impedance and the second contact impedance and the third contact impedance have an error within a specified range, the first region corresponding to the first electrode is the body of the user. further displaying, on the display, a user interface including information that at least a portion should be further contacted; A method comprising