Electronic device including sensor module

Abstract

According to an embodiment of the present disclosure, an electronic device includes: a plurality of light emitting portions arranged spaced apart from each other to form an annular shape; at least one light receiving portion disposed between the plurality of light emitting portions; a separation distance between each of the plurality of light-emitting portions and the at least one light-receiving portion may be configured such that the at least one light-receiving portion obtains the light, and a processor analyzes the light generated by the light-emitting portions and incident on the light-receiving portion. The light is reflected after being emitted from each of the plurality of light emitting portions at a beam angle of each of the plurality of light emitting portions.

Description

Technical Field

[0001] Embodiments of the present disclosure described herein relate to an electronic device including a sensor module. Background Art

[0002] Portable electronic devices may include smart phones, tablet PCs, wearable electronic devices, etc. In addition, it is desirable to be able to obtain biometric information of a user. For example, a portable electronic device may provide various functions for healthcare based on the obtained biometric information.

[0003] The above information may be provided as related art to better understand the present disclosure. It is not claimed or determined whether any of the above is applicable as prior art related to the present disclosure. Summary of the Invention

[0004] According to an embodiment of the present disclosure, an electronic device includes: a plurality of light emitting units spaced apart from each other to form a ring on a printed circuit board; at least one light receiving unit disposed between the plurality of light emitting units; and a processor configured to analyze light generated from the light emitting units and incident on the light receiving unit, wherein a separation distance between each of the plurality of light emitting units and the at least one light receiving unit is such that the at least one light receiving unit is configured to receive reflected light from light emitted from each of the plurality of light emitting units at a beam angle.

[0005] According to an embodiment of the present disclosure, an electronic device includes: a plurality of light emitting units disposed on a printed circuit board and spaced apart from each other to form an annular shape; at least one light receiving unit disposed between the plurality of light emitting units; and a processor configured to analyze light generated from the light emitting units and incident on the light receiving unit, wherein each of a first one or more light emitting units and a second one or more light emitting units included in the plurality of light emitting units includes at least one first light emitting body configured to emit light in a specific wavelength band, wherein the first light emitting bodies of the first one or more light emitting units and the first light emitting bodies of the second one or more light emitting units have different beam angles, and wherein a separation distance between the first light emitting bodies of the first one or more light emitting units and the light receiving unit is different from a separation distance between the first light emitting bodies of the second one or more light emitting units and the light receiving unit.

[0006] According to an embodiment of the present disclosure, a wearable electronic device includes a plurality of light emitting units spaced apart from each other to form an annular shape, at least one light receiving unit disposed between the plurality of light emitting units, and a processor configured to analyze light generated from the light emitting units and incident on the light receiving unit, and a separation distance between each of the plurality of light emitting units and the light receiving unit varies according to a beam angle of a light emitting body.

[0007] According to an embodiment of the present disclosure, a method for operating an electronic device includes: identifying a current state of a measurement target wearing the electronic device; controlling driving of at least one of a plurality of light emitting units spaced apart from each other to form an annular shape according to the current state of the measurement target; and obtaining an optical signal through a plurality of light receiving units disposed between the plurality of light emitting units. A separation distance between each of the plurality of light emitting units and the light receiving unit varies according to a beam angle of a light emitter.

[0008] According to an embodiment of the present disclosure, a method for operating an electronic device includes: when a measurement target wearing the electronic device makes a large movement, obtaining an optical signal emitted from the plurality of light emitting units through the plurality of light receiving units, and when the measurement target makes a small movement, obtaining an optical signal emitted from a light emitter having a minimum beam angle among the plurality of light emitting units through at least one light receiving unit disposed around the light emitter having the minimum beam angle. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a block diagram showing an electronic device in a network environment according to an embodiment;

[0010] Figure 2a is a front perspective view of an electronic device according to an embodiment, and Figure 2b is Figure 2a a rear perspective view of the electronic device.

[0011] Figure 3 is an exploded perspective view showing an electronic device according to an embodiment.

[0012] Figure 4 is a schematic block diagram showing a biometric signal processing device according to an embodiment.

[0013] Figure 5 is a view showing an arrangement of a sensor module of an electronic device according to an embodiment.

[0014] Figure 6 is a view showing an arrangement of a sensor module of an electronic device according to an embodiment.

[0015] Figure 7a and 7b is a view showing an arrangement of a sensor module of an electronic device according to an embodiment.

[0016] Figure 8 is a view showing an arrangement of a sensor module of an electronic device according to an embodiment.

[0017] Figure 9a and 9b is a view showing an arrangement of a sensor module of an electronic device according to an embodiment, andFigure 9c and 9d is a view for explaining Figure 9a and 9b the beam angles of the light-emitting units shown in

[0018] Figure 10a and 10b 10c are views illustrating various examples of a light-emitting body according to an embodiment

[0019] Figures 11a to 11c is a view showing an example of measuring a biometric signal using an electronic device including a sensor module according to an embodiment

[0020] Figure 12 is a flowchart for explaining a method of identifying signal characteristics of a sensor module of an electronic device according to an embodiment

[0021] Figure 13 is a flowchart for explaining a method of identifying signal characteristics of a sensor module of an electronic device according to an embodiment

[0022] Figure 14 shows a biometric signal obtained through an electronic device according to an embodiment

[0023] Regarding the description of the drawings, the same or similar reference numerals may be used to refer to the same or similar components Detailed Description of Embodiments

[0024] Hereinafter, certain embodiments of the present disclosure may be described with reference to the drawings. Accordingly, those of ordinary skill in the art will recognize that various modifications, equivalents, and / or substitutions can be made to certain embodiments described herein without departing from the scope and spirit of the present disclosure

[0025] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure can be embodied in many different forms and is not limited to the embodiments described herein. In the description in conjunction with the drawings, the same or similar reference numerals may be used for the same or similar elements. In addition, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and conciseness

[0026] Figure 1 An electronic device according to certain embodiments is described Figure 2a and Figure 2b and Figure 3 describe the housing of an electronic device such as a smartwatch according to certain embodiments

[0027] Electronic device

[0028] Figure 1is a block diagram showing an electronic device 101 in a network environment 100 according to some embodiments.

[0029] Referring Figure 1 , the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via a first network 198 (e.g., a short-range wireless communication network), or communicate with at least one of the electronic device 104 or the server 108 via a second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection end 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the above components (e.g., the connection end 178) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. In some embodiments, some of the above components may be implemented as a single integrated component. For example, some of the above components (e.g., the sensor module 176, the camera module 180, or the antenna module 197) may be implemented as the display module 160 (e.g., a display).

[0030] The processor 120 may run software (e.g., program 140), for example, to control at least one other component (e.g., a hardware component or a software component) connected to the processor 120 of the electronic device 101, and may perform various data processing or computations. According to an embodiment, as at least part of the data processing or computation, the processor 120 may store commands or data received from another component (e.g., the sensor module 176 or the communication module 190) in the volatile memory 132, process the commands or data stored in the volatile memory 132, and store the resulting data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) and an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operationally independent of or combined with the main processor 121. When the electronic device 101 includes the main processor 121 and the auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121, or may be adapted to be dedicated to a specific function. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of the main processor 121.

[0031] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 (instead of the main processor 121) may control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) together with the main processor 121. According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module 180 or the communication module 190) that is functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural network processing device) may include a hardware structure dedicated to processing an artificial intelligence (AI) model. The artificial intelligence model may be generated through machine learning. Such learning may be performed by the electronic device 101 that executes artificial intelligence or via an additional server (e.g., the server 108). The learning algorithm may include, for example, a supervised learning algorithm, an unsupervised learning algorithm, a semi-supervised learning algorithm, or a reinforcement learning algorithm, but the present disclosure is not limited thereto. The artificial intelligence model may include multiple artificial neural network (ANN) layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), or a deep Q network, or a combination of the above networks, but the present disclosure is not limited thereto. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to the hardware structure.

[0032] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134.

[0033] The program 140 may be stored as software in the memory 130, and the program 140 may include, for example, an operating system (OS) 142, middleware 144, or an application 146.

[0034] The input module 150 may receive commands or data to be used by other components of the electronic device 101 (e.g., the processor 120) from the outside of the electronic device 101 (e.g., a user). The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus).

[0035] 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 may be used for general purposes such as playing multimedia or playing a record, and the receiver may be used for receiving an incoming call. According to an embodiment, the receiver may be implemented separately from the speaker or as a part of the speaker.

[0036] The display module 160 may visually provide information to the outside of the electronic device 101 (e.g., to a user). The display device 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display module 160 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the intensity of a force caused by the touch.

[0037] The audio module 170 may convert sound into an electrical signal and vice versa. According to an embodiment, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or an external electronic device (e.g., the electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101 (e.g., a speaker of the earphone).

[0038] The sensor module 176 may detect an operating state of the electronic device 101 (e.g., power or temperature) or an environmental state outside the electronic device 101 (e.g., a state of a user), and then generate an electrical signal or a data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0039] The interface 177 may support one or more specific protocols used to directly (e.g., wired) or wirelessly connect the electronic device 101 to an external electronic device (e.g., 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, a secure digital (SD) card interface, or an audio interface.

[0040] The connection terminal 178 may include a connector through which the electronic device 101 may be physically connected to an external electronic device (e.g., the electronic device 102). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0041] The haptic module 179 may convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be recognized by the user via his sense of touch or kinesthesia. According to an embodiment, the haptic module 179 may include, for example, an electric motor, a piezoelectric element, or an electrical stimulator.

[0042] The camera module 180 may capture a still image or a moving image. According to an embodiment, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash light emitter.

[0043] The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as at least part of, for example, a power management integrated circuit (PMIC).

[0044] The battery 189 may supply power to at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0045] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., the electronic device 102, the electronic device 104, or the server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently of the processor 120 (e.g., an application processor (AP)), and support direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). The corresponding communication module among these communication modules may communicate with the external electronic device via a first network 198 (e.g., a short-range communication network, such as Bluetooth, Wi-Fi Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network, such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or wide area network (WAN))). These various types of communication modules may be implemented as a single component (e.g., a single chip), or these various types of communication modules may be implemented as multiple separate components (e.g., multiple chips). The wireless communication module 192 may identify and authenticate the electronic device 101 in a communication network (such as the first network 198 or the second network 199) using user information (e.g., an international mobile subscriber identity (IMSI)) stored in the user identification module 196.

[0046] The wireless communication module 192 may support 5G networks and next-generation communication technologies after 4G networks, for example, New Radio (NR) access technologies. The NR access technology may support high-speed transmission of high-capacity data (Enhanced Mobile Broadband (eMBB)), terminal power minimization, and multi-terminal access (Massive Machine Type Communication (mMTC)), or Ultra-Reliable Low-Latency Communication (URLLC). The wireless communication module 192 may support high frequency bands (e.g., millimeter wave bands) to achieve, for example, higher data transmission rates. The wireless communication module 192 may support various technologies such as beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas to ensure performance in high frequency bands. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., the electronic device 104), or a network system (e.g., the second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), a loss coverage for implementing mMTC (e.g., 164 dB or less), or a U-plane latency for implementing URLLC (e.g., 0.5 ms or less for each of downlink (DL) and uplink (UL), or a round-trip of 1 ms or less).

[0047] The antenna module 197 may transmit a signal or power to the outside of the electronic device 101 (e.g., an external electronic device) or receive a signal or power from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna, and the antenna may include a radiating element formed of a conductive material or a conductive pattern formed in a substrate (e.g., a printed circuit board (PCB)) or formed on the substrate. According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme to be used in a communication network (such as the first network 198 or the second network 199) may be selected from the plurality of antennas by, for example, the communication module 190. Subsequently, a signal or power may be transmitted or received between the communication module 190 and an external electronic device via the selected at least one antenna. According to an embodiment, additional components (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module 197.

[0048] According to some embodiments, the antenna module 197 may form a millimeter-wave antenna module. According to an embodiment, the millimeter-wave antenna module may include a printed circuit board, a radio frequency integrated circuit (RFIC), and a plurality of antennas (e.g., an array antenna), wherein the RFIC is disposed on a first surface (e.g., a bottom surface) of the printed circuit board or adjacent to the first surface to support a specified high-frequency band (e.g., a millimeter-wave band), and the plurality of antennas are disposed on a second surface (e.g., a top surface or a side surface) of the printed circuit board or adjacent to the second surface to transmit or receive signals of the specified high-frequency band.

[0049] At least some of the above components may be interconnected via an inter-peripheral communication scheme (e.g., a bus, general-purpose input / output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0050] According to an embodiment, commands or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the external electronic device 102 or the external electronic device 104 may be a device of the same type as the electronic device 101 or a device of a different type from the electronic device 101. According to an embodiment, all or some of the operations running on the electronic device 101 may be run on one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 is to automatically execute a function or service or is to execute a function or service in response to a request from a user or another device, the electronic device 101 may request one or more of the external electronic devices to execute at least part of the function or service instead of running the function or service, or in addition to running the function or service, the electronic device 101 may also request one or more of the external electronic devices to execute at least part of the function or service. The one or more external electronic devices that receive the request may execute the requested at least part of the function or service, or execute additional functions or additional services related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least part of a reply to the request with or without further processing of the result. To this end, for example, cloud computing technology, distributed computing technology, mobile edge computing (MEC) technology, or client-server computing technology may be used. The electronic device 101 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. According to some embodiments, the external electronic device 104 may include an Internet of Things (IoT) device. The 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 artificial intelligence services (e.g., smart home, smart city, smart car, or healthcare services) based on 5G communication technology and IoT-related technology.

[0051] In some embodiments, the sensor module 176 may be configured to perform biometric measurements. The biometric measurements may be used for healthcare applications. In addition, the electronic device 100 may include a wearable electronic device, such as a smartwatch. The smartwatch may be worn on the wrist, and the sensor module 176 may be close to or in contact with the wrist.

[0052] Housing

[0053] Figure 2a is a front perspective view of an electronic device according to an embodiment, and Figure 2b is Figure 2a a rear perspective view of the electronic device.

[0054] Reference Figure 2a and Figure 2b , according to an embodiment, the electronic device 200 (e.g., Figure 1 the electronic device 101) may include a housing 210 and fastening members 250 and 260. The housing 210 may include a first surface (or front surface) 210a, a second surface (or rear surface) 210b, and side surfaces 210c surrounding a space between the first surface 210a and the second surface 210b. The fastening members 250 and 260 may be connected to at least a portion of the housing 210 and may detachably fasten the electronic device 200 around a portion of a user's body (e.g., wrist, ankle, etc.). In another embodiment (not shown), the housing may also refer to a structure forming Figure 2a a portion of the first surface 210a, the second surface 210b, and the side surfaces 210c. According to an embodiment, the first surface 210a may be formed by a front plate 201, at least a portion of which is substantially transparent (e.g., a glass plate including various coatings, or a polymer plate). The second surface 210b may be formed by a substantially opaque back plate 207. The back plate 207 may be formed of, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing materials. The side surfaces 210c may be formed by a side border structure (or "side member") 206 that is coupled to the front plate 201 and the back plate 207 and includes metal and / or polymer. In some embodiments, the back plate 207 and the side border structure 206 may be integrally formed with each other and may include the same material (e.g., a metal material such as aluminum). The fastening members 250 and 260 may be formed of various materials and may have various forms. The fastening members 250 and 260 may be formed of woven fabric, leather, rubber, polyurethane, metal, ceramic, or a combination of at least two of the foregoing materials. The fastening members 250 and 260 may be implemented in an integrated form or may be implemented with a plurality of unit linkages that are movable relative to each other.

[0055] According to an embodiment, the electronic device 200 may include at least one of a display 220 (reference Figure 3 ), audio modules 205 and 208, a sensor module 211, key input devices 202, 203, and 204, or a connector hole 209. In some embodiments, the electronic device 200 may not include at least one of the above components (e.g., key input devices 202, 203, and 204, connector hole 209, or sensor module 211), or may additionally include other components.

[0056] For example, the display 220 may be exposed through most of the front plate 201. The display 220 may have a shape corresponding to the shape of the front plate 201. The display 220 may have various shapes, such as a circular shape, an oval shape, a polygonal shape, etc. The display 220 may be combined with or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a fingerprint sensor.

[0057] The audio modules 205 and 208 may include microphone holes 205 and speaker holes 208. A microphone for obtaining external sounds may be disposed in the microphone hole 205, and in some embodiments, multiple microphones may be disposed in the microphone hole 205 to sense the direction of sounds. The speaker hole 208 may be used for an external speaker and a receiver for a phone call. In some embodiments, the speaker hole 208 and the microphone hole 205 may be implemented as a single hole, or may include a speaker (e.g., a piezoelectric speaker) without including the speaker hole 208.

[0058] The sensor module 211 may generate an electrical signal or a data value corresponding to an operating state inside the electronic device 200 or an environmental state outside the electronic device 200. The sensor module 211 may include, for example, a biometric sensor module 211 (e.g., a heart rate monitor (HRM) sensor) disposed on the second surface 210b of the housing 210. The electronic device 200 may also include a sensor module (not shown), which may be at least one of, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0059] The sensor module 211 may include electrode regions 213 and 214 that form part of the surface of the electronic device 200 and a biometric signal detection circuit (not shown) electrically connected to the electrode regions 213 and 214. For example, the electrode regions 213 and 214 may include a first electrode region 213 and a second electrode region 214 disposed on the second surface 210b of the housing 210. The sensor module 211 may be configured such that the electrode regions 213 and 214 obtain an electrical signal from a part of the user's body, and the biometric signal detection circuit detects the user's biometric information based on the electrical signal.

[0060] The key input devices 202, 203, and 204 may include a wheel key 202 that is disposed on the first surface 210a of the housing 210 and is rotatable in at least one direction and / or side key buttons 203 and 204 that are disposed on the side surface 210c of the housing 210. The wheel key may have a shape corresponding to the shape of the front plate 201. In another embodiment, the electronic device 200 may not include all or some of the foregoing key input devices 202, 203, and 204, and the unincluded key input devices 202, 203, and 204 may be implemented on the display 220 in a different form (such as a soft key). The connector hole 209 may include a connector hole (not shown) that is capable of accommodating a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device and is capable of accommodating a connector for transmitting and receiving an audio signal with an external electronic device. The electronic device 200 may further include, for example, a connector cover (not shown) that covers at least a part of the connector hole 209 and blocks the infiltration of external foreign substances into the connector hole. In another embodiment, the electronic device 200 may not include all or a part of the connector hole 209 and the connector cover.

[0061] The fastening members 250 and 260 may be detachably fastened to at least a partial area of the housing 210 by using locking members 251 and 261. The fastening members 250 and 260 may include at least one of a fixing member 252, a fixing member fastening hole 253, a belt guiding member 254, or a belt fixing ring 255.

[0062] The fixing member 252 may be configured to fix the housing 210 and the fastening members 250 and 260 to a part of a user's body (e.g., a wrist, an ankle, etc.). The fixing member fastening hole 253 may fix the housing 210 and the fastening members 250 and 260 to a part of a user's body corresponding to the fixing member 252. The belt guiding member 254 may be configured to limit the movement range of the fixing member 252 when the fixing member 252 is fastened to one of the fixing member fastening holes 253. Accordingly, the fastening members 250 and 260 may be fastened around a part of a user's body in a state of being in close contact with the part of the user's body. In a state where the fixing member 252 is fastened to one of the fixing member fastening holes 253, the belt fixing ring 255 may limit the movement range of the fastening members 250 and 260. In another embodiment, the fastening members 250 and 260 may not include at least one of the fixing member 252, the fixing member fastening hole 253, the belt guiding member 254, or the belt fixing ring 255. For example, the fastening members 250 and 260 may be coupled to each other and formed in a ring shape. Accordingly, the fastening members 250 and 260 may not include the fixing member 252, the fixing member fastening hole 253, the belt guiding member 254, and the belt fixing ring 255.

[0063] Figure 3 is an exploded perspective view showing an electronic device according to an embodiment.

[0064] Referring to Figure 3 , the electronic device 300 (e.g., Figure 1 the electronic device 101 of Figure 2a or the electronic device 200 of FIG. 2) may include a side bezel structure 310 (e.g., Figure 2a the side bezel structure 206 of Figure 2b ), a wheel key 320 (e.g., Figure 2a the wheel key 202 of 2b ), a front plate 201, a display 220, a first antenna 350, a second antenna 355, a support member 360 (e.g., a bracket), a battery 370, a printed circuit board 380, a sealing member 390, a back plate 393 (e.g., Figure 2a and Figure 2b the back plate 207 of

[0065] ), and fastening members 395 and 397 (e.g.,

[0066] the fastening members 250 and 260 of ). At least one of the components of the electronic device 300 may be the same as or similar to at least one of the components of the Figure 2a and Figure 2b electronic device 200, and repeated descriptions will be omitted hereinafter. The support member 360 may be disposed inside the electronic device 300 and may be connected to the side bezel structure 310 or may be integrally formed with the side bezel structure 310. The support member 360 may be formed of, for example, a metallic material and / or a non-metallic (e.g., polymer) material. The display 220 may be coupled to one surface of the support member 360, and the printed circuit board 380 may be coupled to the opposite surface of the support member 360. The printed circuit board 380 may have a processor, a memory, and / or an interface mounted thereon. The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing unit (GPU), a sensor processor, or a communication processor.

[0065] The memory may include, for example, a volatile memory or a non-volatile memory. The interface may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and / or an audio interface. For example, the interface may electrically or physically connect the electronic device 300 to an external electronic device and may include a USB connector, an SD card / MMC connector, or an audio connector.

[0066] The battery 370 may be a device for supplying power to at least one component of the electronic device 300. The battery 370 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery 370 may be disposed, for example, in a plane substantially the same as that of the printed circuit board 380. The battery 370 may be integrally disposed inside the electronic device 300 or may be disposed to be removable from the electronic device 300.

[0067] The first antenna 350 may be disposed between the display 220 and the support member 360. The first antenna 350 may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The first antenna 350 may, for example, perform short-range communication with an external device, or may wirelessly transmit and receive power required for charging, and may transmit a magnetic-based signal including a short-range communication signal or payment data. In another embodiment, the antenna structure may be formed by a part of the side frame structure 310 and / or a part of the support member 360 or a combination thereof.

[0068] The second antenna 355 may be disposed between the printed circuit board 380 and the back plate 393. The second antenna 355 may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The second antenna 355 may, for example, perform short-range communication with an external device, or may wirelessly transmit and receive power required for charging, and may transmit a magnetic-based signal including a short-range communication signal or payment data. In another embodiment, the antenna structure may be formed by a part of the side frame structure 310 and / or a part of the back plate 393 or a combination thereof.

[0069] The sealing member 390 may be located between the side frame structure 310 and the back plate 393. The sealing member 390 may be configured to block moisture and foreign substances introduced from the outside into the space surrounded by the side frame structure 310 and the back plate 393.

[0070] Figure 4 is a schematic block diagram showing a biometric signal processing device according to an embodiment.

[0071] Reference Figure 4 , the biometric signal processing device 401 may be a wearable electronic device (e.g., Figure 1 's electronic device, Figure 2a and 2b 's electronic device 200 or Figure 3 's electronic device 300). Without being limited thereto, the biometric signal processing device 401 may be a portable terminal such as a smart phone or a tablet computer, a patch or sticker type device, or an implantable device.

[0072] For example, the biometric signal processing device 401 may be provided in a wearable electronic device in the form of a hardware or software module. In another example, the biometric signal processing device 401 may be implemented as an independent hardware device. The biometric signal processing device 401 may be used to obtain and analyze various types of biometric signals. However, without being limited thereto, various changes and modifications may be made according to the usage purpose of the technology described in the present disclosure.

[0073] The biometric signal processing device 401 may include a sensor module 410 (e.g., Figure 1 the sensor module 176 or / and Figure 2b the sensor module 211), a processor 420 (e.g., Figure 1 the processor 120), a memory 430 (e.g., Figure 1 the memory 130), and a display 460 (e.g., Figure 1 the display module 160 or / and Figure 3 the display 220).

[0074] The sensor module 410 may include a plurality of sensors and may receive signals for obtaining biometric signals through the plurality of sensors. For example, the plurality of sensors may optionally include another sensor (e.g., an acceleration sensor) for measuring necessary biometric signals as needed, and biometric sensors such as an electrocardiogram (ECG) sensor, a photoplethysmography (PPG) sensor, a heart rate monitoring sensor, or a body temperature sensor. For example, among the plurality of sensors, the PPG sensor is a sensor that applies light to a user's body (or, the user's skin) and estimates various biometric states based on the characteristics of the body or the blood flow in the body by using the property that light is absorbed, scattered, or reflected in the skin tissue of the user's body.

[0075] According to an embodiment, at least one PPG sensor may include at least two light emitting units 411 (or light sources) and at least one light receiving unit (or photodetector or photosensor) 412. Light in a specific wavelength band output from the light emitting unit 411 may be applied to the user's body. The light emitting unit 411 may apply light having a constant intensity to the user's body, and the wavelength of the applied light may vary according to the purpose of measurement or the type of target component to be analyzed. For example, the light emitting unit 411 may include at least one light emitter including a light emitting diode (LED) or a laser diode (LD). The light emitting unit 411 may use light in various wavelength bands (such as green light, red light, blue light, or infrared light) to reduce the influence of motion artifacts. The light emitting unit 411 may emit light by sequentially or simultaneously turning on or crossing lights in several wavelength bands.

[0076] The sensor module 410 may detect light diffusely reflected from the user's body corresponding to the applied light through the light receiving unit 412. The sensor module 410 may output a biometric signal corresponding to the reflected light returned from the user's body through the light receiving unit 412.

[0077] The light receiving unit 412 of the sensor module 410 may receive at least a part of the returned reflected light, and may generate at least one biometric information using the electrical signal obtained by converting the light. For example, the light receiving unit 412 may include a photodiode (PD), a phototransistor, or a charge-coupled device (CCD). However, the light receiving unit 412 is not limited to the foregoing, and may include an element capable of converting an optical signal into an electrical signal. The light receiving unit 412 may have a reflective or transmissive structure.

[0078] The sensor module 410 may receive a current corresponding to the optical signal received by the light receiving unit 412, may convert the received current signal into a digital signal, and may transmit the digital signal to the processor 420. The sensor module 410 may perform current-voltage conversion for processing the optical signal received by the light receiving unit 412, may digitize the output analog voltage signal before transmitting the output analog voltage signal to the processor 420, and may transmit the digitized signal to the processor 420. Based on the biometric signal from the sensor module 410, the processor 420 may analyze the biometric signal.

[0079] The sensor module 410 may further include a motion sensor (not shown). The motion sensor may include various types of sensors capable of sensing the movement of the biometric signal processing device 401. For example, the motion sensor may include a gyro sensor, an acceleration sensor, or a geomagnetic sensor. The motion sensor may obtain at least one sensing signal that varies according to the movement of the user who turns on the biometric signal processing device 401. Based on the sensing signal of the motion sensor, the biometric signal processing device 401 may determine the degree of movement of the biometric signal processing device 401 and the user having the biometric signal processing device 401.

[0080] The processor 420 may be Figure 1 the processor 120. Alternatively, the processor 420 may be a sensor processor separately implemented from Figure 1 the processor 120. For example, the processor 420 may measure the blood flow rate in the blood vessels that increases or decreases due to a heartbeat based on the biometric signal collected by the light receiving unit 412, and may measure the user's pulse wave based on the measured blood flow rate. For example, the processor 420 may obtain information about the user's heart rate, and may monitor the health condition based on the received information about the heart rate.

[0081] The processor 420 may detect, predict, or analyze the health status of a user of the biometric signal processing device based on biometric signals from the sensor module 410. For example, the processor 420 may use the PPG sensor of the sensor module 410 to measure the heart rate, and the heart rate (which is the frequency of the heartbeat measured by the number of contractions of the heart per minute) may be used to determine the health status or exercise status during normal times. According to an embodiment, the processor 420 may use heart rate variability (HRV) based on heart rate interval information to determine the stress or tension level.

[0082] The processor 420 may analyze biometric signals. The processor 420 may store the biometric signals in the memory 430 and may provide at least one piece of biometric information. Here, the at least one piece of biometric information may be information such as heart rate, blood pressure, or sleep apnea. The biometric information may be used as basic data for analyzing the physical strength or health status of the user.

[0083] The processor 420 may determine at least one of the light intensity or the irradiation range based on biometric information related to the user stored in the memory 430 or information obtained through a test drive of light. For each user wearing the biometric signal processing device 401, the skin color and the structure and position of the capillaries may differ from each other according to the wearing position. Therefore, the processor 420 may select the light emitters 411 to be turned on / off among the plurality of light emitting units 411 according to the body structure of the user who turns on the biometric signal processing device 401, and may selectively determine the light intensity of the turned-on light emitters 411. The processor 420 may select the light to be turned on among the plurality of light emitting units according to at least one of the required light emission range, light intensity, or position, and may determine the light intensity of the selected light.

[0084] The memory 430 may store data (e.g., biometric information) of the biometric signal processing device 401. For example, the memory 430 may store at least one of the structure of the user's capillaries, the position of the user's capillaries, and the user's skin color, blood pressure, blood glucose level, heart rate, blood oxygen saturation, stress index, or body fat index.

[0085] The display 460 may be implemented to be substantially the same as or similar to the display module 160 described with reference Figure 1 The display 460 may receive at least one piece of biometric information from the processor 420 and may visually display the biometric information. For example, the display 460 may display a user interface based on biometric signals measured when an application for measuring biometric signals (e.g., an electrocardiogram application or a healthcare application) is executed. In addition, under the control of the processor 420, when biometric signals are measured, the display 460 may output a guidance screen or an abnormal state.

[0086] Figure 5 It is a view showing the arrangement of a sensor module of an electronic device according to an embodiment.

[0087] Referring Figure 5 , the sensor module 500 may be mounted on a printed circuit board 501. The sensor module 500 may include a plurality of light emitting units 510 and a plurality of light receiving units 520. The number of the light emitting units 510 may be equal to or different from the number of the light receiving units 520. The light emitting units 510 and the light receiving units 520 included in the sensor module 500 may be arranged in a one-to-one or one-to-many correspondence. For example, the light emitting units 510 and the light receiving units 520 may be alternately arranged and physically spaced apart from each other. The light emitting units 510 and the light receiving units 520 may be substantially arranged in an annular shape including a separation gap.

[0088] Each of the light emitting units 511, 512, and 513 may emit light sequentially or simultaneously. The light from the light emitting units 511, 512, and 513 is transmitted to the user's body and reflected. Two light receiving portions adjacent to each light emitting unit are configured to be able to detect the reflected light.

[0089] For example, the first light emitting unit 511, the second light emitting unit 512, and the third light emitting unit 513 may emit light in a specified order in sequence or may emit light simultaneously.

[0090] At least one of the first light receiving unit 521 or the third light receiving unit 523 (configured to be adjacent to the first light emitting unit 511) may form a first optical sensor together with the first light emitting unit 511. At least one of the first light receiving unit 521 or the third light receiving unit 523 may have a light receiving wavelength band corresponding to the emission wavelength of the first light emitting unit 511. At least one of the first light receiving unit 521 or the third light receiving unit 523 may obtain at least a part of the light output through the first light emitting unit 511 and then reflected by the user's body.

[0091] At least one of the first light receiving unit 521 or the second light receiving unit 522 (adjacently arranged to the second light emitting unit 512) may form a second optical sensor together with the second light emitting unit 512. At least one of the first light receiving unit 521 or the second light receiving unit 522 may have a light receiving wavelength band corresponding to the emission wavelength of the second light emitting unit 512. At least one of the first light receiving unit 521 or the second light receiving unit 522 may obtain at least a part of the light output through the second light emitting unit 512 and reflected by the user's body.

[0092] At least one of the second light receiving unit 522 or the third light receiving unit 523 disposed adjacent to the third light emitting unit 513 may form a third optical sensor together with the third light emitting unit 513. At least one of the second light receiving unit 522 or the third light receiving unit 523 may have a light receiving wavelength band corresponding to the emission wavelength of the third light emitting unit 513. At least one of the second light receiving unit 522 or the third light receiving unit 523 may obtain at least a part of the light output by the third light emitting unit 513 and reflected by the user's body.

[0093] The sensor module 500 may be arranged in the order of the first light emitting unit 511, the first light receiving unit 521, the second light emitting unit 512, the second light receiving unit 522, the third light emitting unit 513, and the third light receiving unit 523. The first light emitting unit 511, the first light receiving unit 521, the second light emitting unit 512, the second light receiving unit 522, the third light emitting unit 513, and the third light receiving unit 523 may be spaced apart from each other in a clockwise or counterclockwise direction.

[0094] At least one of the separation distances between the plurality of light emitting units 510 and the plurality of light receiving units 520 may be different from the remaining separation distances. For example, the separation distances between the plurality of light emitting units 510 and the plurality of light receiving units 520 may be different from each other. In another example, some of the separation distances between the plurality of light emitting units 510 and the plurality of light receiving units 520 may be the same as each other, and the remaining separation distances may be different from each other.

[0095] For example, the first light receiving unit 521 may be spaced apart from the first light emitting unit 511 and the second light emitting unit 512 (disposed on the opposite side of the first light receiving unit 521) by different distances. The first light receiving unit 521 may be spaced apart from the first light emitting unit 511 by a first separation distance D51, and may be spaced apart from the second light emitting unit 512 by a second separation distance D52. The second separation distance D52 may be different from the first separation distance D51.

[0096] The first light emitting unit 511 may be spaced apart from the first light receiving unit 521 and the third light receiving unit 523 disposed on the opposite side of the first light emitting unit 511 by a specified distance. The first light emitting unit 511 may be spaced apart from the first light receiving unit 521 by a first separation distance D51, and may be spaced apart from the third light receiving unit 523 by a third separation distance D53. The third separation distance D53 may be equal to, substantially equal to, or similar to the first separation distance D51. At least one of the first separation distance D51 or the third separation distance D53 may be different from the second separation distance D52.

[0097] The second light emitting unit 512 may be spaced apart from the first light receiving unit 521 and the second light receiving unit 522 (disposed on the opposite side of the second light emitting unit 512) by a specified distance. The second light emitting unit 512 may be spaced apart from the first light receiving unit 521 by a second separation distance D52, and may be spaced apart from the second light receiving unit 522 by a fourth separation distance D54. The fourth separation distance D54 may be equal to, substantially equal to, or similar to the second separation distance D52. At least one of the second separation distance D52 or the fourth separation distance D54 may be different from the first separation distance D51.

[0098] The separation distances between the plurality of light emitting units 510 and the plurality of light receiving units 520 may be set based on the beam angles of the plurality of light emitting units 510 (e.g., Figure 9c and 9d the beam angles θb1 and θb2). For example, the separation distances between the plurality of light emitting units 510 and the light receiving units 520 may be set to be proportional to the beam angles of the light sources 510. For example, as the beam angle of the light emitting unit 510 increases, the separation distance between the light emitting unit 510 and the light receiving unit 520 may be set to a greater separation distance. As the beam angle of the light emitting unit 510 decreases, the separation distance between the light emitting unit 510 and the light receiving unit 520 may be set to a smaller separation distance.

[0099] Figure 6 is a view showing the arrangement of the sensor module of the electronic device according to an embodiment. In some embodiments, there may be a different number of light receiving units 620 from the light emitting units 610. For example, there may be four light receiving units 621, 622, 623, and 624, and two light emitting units 611, 612. The separation distances D63 and D64 between the light emitting unit 612 and the adjacent light receiving units 623 and 624 may be substantially the same. The separation distances D61 and D62 between the light emitting unit 611 and the adjacent light receiving units 621 and 622 may be substantially the same. The separation distances D61 and D62 may be substantially different from the separation distances D63 and D64.

[0100] Referring to Figure 6 , the sensor module 600 mounted on the printed circuit board 601 may include a plurality of light emitting units 610 and a plurality of light receiving units 620. The number of light emitting units 610 may be different from the number of light receiving units. The number of light emitting units 610 may be greater than the number of light receiving units 620, or the number of light receiving units 620 may be greater than the number of light emitting units 610. The light emitting units 610 may be arranged to correspond to the light receiving units 620 in a one-to-many manner.

[0101] According to an embodiment, the light emitting unit 610 may include a first light emitting unit 611 and a second light emitting unit 612. The first light emitting unit 611 and the second light emitting unit 612 may emit light in a specified order successively or may emit light simultaneously. The light receiving unit 620 may include a first light receiving unit 621, a second light receiving unit 622, a third light receiving unit 623, and a fourth light receiving unit 624. The first light receiving unit 621 and the second light receiving unit 622 may be arranged adjacent to the first light emitting unit 611 to form a first optical sensor. The first light receiving unit 621 and the second light receiving unit 622 may be located on opposite sides of the first light emitting unit 611 with the first light emitting unit 611 therebetween. The first light receiving unit 621 and the second light receiving unit 622 may also have a light receiving wavelength band corresponding to the light emitting wavelength of the first light emitting unit 611. The first light receiving unit 621 and the second light receiving unit 622 may have a light receiving wavelength band corresponding to light in the same wavelength band or may have a light receiving wavelength band corresponding to light in different wavelength bands. For example, the first light receiving unit 621 may also have a light receiving wavelength band corresponding to the light emitting wavelength of one light emitting body included in the first light emitting unit 611. The second light receiving unit 622 may have a light receiving wavelength band corresponding to the emission wavelength of another light emitting body included in the first light emitting unit 611. The first light receiving unit 621 and the second light receiving unit 622 may obtain at least a part of the light output through the first light emitting unit 611 and reflected by the user's body. The third light receiving unit 623 and the fourth light receiving unit 624 may be arranged adjacent to the second light emitting unit 612 to form a second optical sensor. The third light receiving unit 623 and the fourth light receiving unit 624 may be located on opposite sides of the second light emitting unit 612 with the second light emitting unit 612 therebetween. The third light receiving unit 623 and the fourth light receiving unit 624 may also have a light receiving wavelength band corresponding to the light emitting wavelength of the second light emitting unit 612. The third light receiving unit 623 and the fourth light receiving unit 624 may have a light receiving wavelength band corresponding to light in the same wavelength band or may have a light receiving wavelength band corresponding to light in different wavelength bands. For example, the third light receiving unit 623 may also have a light receiving wavelength band corresponding to the light emitting wavelength of one light emitting body included in the second light emitting unit 612. The fourth light receiving unit 624 may have a light receiving wavelength band corresponding to the emission wavelength of another light emitting body included in the second light emitting unit 612. The third light receiving unit 623 and the fourth light receiving unit 624 may obtain at least a part of the light output through the second light emitting unit 612 and reflected by the user's body.

[0102] The sensor module 600 may be arranged in the order of a first light receiving unit 621, a first light emitting unit 611, a second light receiving unit 622, a third light receiving unit 623, a second light emitting unit 612, and a fourth light receiving unit 624. The first light receiving unit 621, the first light emitting unit 611, the second light receiving unit 622, the third light receiving unit 623, the second light emitting unit 612, and the fourth light receiving unit 624 may be spaced apart from each other in a clockwise or counterclockwise direction.

[0103] According to an embodiment, at least one of the separation distances between the plurality of light emitting units 610 and the plurality of light receiving units 620 may be different from the remaining separation distances. For example, the separation distances between the plurality of light emitting units 610 and the plurality of light receiving units 620 may be different from each other. In another example, some of the separation distances between the plurality of light emitting units 610 and the plurality of light receiving units 620 may be the same as each other, and the remaining separation distances may be different from each other.

[0104] For example, the first light emitting unit 611 may be spaced apart from the first light receiving unit 621 by a first separation distance D61, and may be spaced apart from the second light receiving unit 622 by a second separation distance D62 that is substantially the same as the first separation distance D61.

[0105] The second light emitting unit 612 may be spaced apart from the third light receiving unit 623 by a third separation distance D63, and may be spaced apart from the fourth light receiving unit 624 by a fourth separation distance D64 that is substantially the same as the third separation distance D63. Each of the third separation distance D63 and the fourth separation distance D64 may be different from one of the first separation distance D61 and the second separation distance D62. According to an embodiment, the separation distances between the plurality of light emitting units 610 and the plurality of light receiving units 620 may be set based on the beam angles of the plurality of light emitting units 610 (e.g., Figure 9c and 9d the beam angles θb1 and b2). For example, the separation distances between the light emitting units 610 and the light receiving units 620 may be set to be proportional to the beam angles of the light emitting units 610.

[0106] Figure 7a and 7b are views showing the arrangement of the sensor module of an electronic device according to an embodiment. Some embodiments may include a partition wall 730 between or around the light emitting unit and the light receiving unit.

[0107] Refer to Figure 7a and Figure 7b, the sensor module 700 may include a plurality of light emitting units 710 and a plurality of light receiving units 720. At least one of the separation distances between the plurality of light emitting units 710 and the plurality of light receiving units 720 may be different from the remaining separation distances. A partition wall 730 may be disposed between the light emitting unit 710 and the light receiving unit 720 mounted on the printed circuit board 701. The partition wall 730 may prevent the light output from the light emitting unit 710 from being directly input to the light receiving unit 720 without being reflected by the user's body. Depending on the use of the partition wall 730 and the structure of the mechanical components near the partition wall 730, the partition wall 730 may be formed in various shapes.

[0108] For example, as Figure 7a shown, the partition wall 730 may be formed in a linear shape between the first light emitting unit 711 and the first light receiving unit 721, between the first light receiving unit 721 and the second light emitting unit 712, between the second light emitting unit 712 and the second light receiving unit 722, between the second light receiving unit 722 and the third light emitting unit 713, between the third light emitting unit 713 and the third light receiving unit 723, and between the third light receiving unit 723 and the first light emitting unit 711.

[0109] In another example, as Figure 7b shown, the partition wall 730 may be formed to surround the first light emitting unit 711, the second light emitting unit 712, and the third light emitting unit 713, respectively. In another example, the partition wall 730 may be formed to surround the first light receiving unit 721, the second light receiving unit 722, and the third light receiving unit 723, respectively. Meanwhile, although the partition wall 730 is formed in a quadrilateral shape in Figure 7b , the present disclosure is not limited thereto. For example, the partition wall 730 may be formed in a polygon, a circle, or an ellipse shape other than the quadrilateral shape.

[0110] The partition wall 730 may be perpendicular to the printed circuit board 701. The partition wall 730 may prevent the light from the light emitting unit 710 from being directly received by the light receiving unit 723.

[0111] Figure 8 is a view showing the arrangement of the sensor module of the electronic device according to an embodiment.

[0112] Referring to Figure 8 , the sensor module 800 may include a plurality of light emitting units 810 and a plurality of light receiving units 820 mounted on the printed circuit board 801. At least one of the separation distances between the plurality of light emitting units 810 and the plurality of light receiving units 820 may be different from the remaining separation distances.

[0113] A plurality of light emitting units 810 may be implemented to output light in various wavelength bands and / or light having various intensities. The plurality of light emitting units 810 may have the same type of emission wavelength or different types of emission wavelengths. Alternatively, at least one of the light emitting units 810 may have a light emitting wavelength of a different type from that of the remaining light emitting units 810.

[0114] At least one of the light emitting units 810 may output light in a visible light wavelength band and / or an infrared wavelength band. At least one of the light emitting units 810 may include at least one light emitter capable of outputting at least one of red light, green light, blue light, or infrared light. For example, the light emitting unit 810 may include a first light emitter 831, a second light emitter 832, and a third light emitter 833. The first light emitter 831 may output green light having a wavelength of about 450 nm to about 650 nm, the second light emitter 832 may output red light having a wavelength of about 550 nm to about 700 nm, and the third light emitter 833 may output infrared light having a wavelength of about 880 nm to about 940 nm.

[0115] The first light emitters 831 may be physically spaced apart from each other with a light receiving unit 820 therebetween. The first light emitters 831 may be disposed on the printed circuit board 801 along a virtual first ring VC1 at a specified interval. For example, the virtual first ring VC1 may be formed in a circular, elliptical, or polygonal shape.

[0116] The second light emitter 832 and the third light emitter 833 may be disposed adjacent to each other. The second light emitter 832 may be disposed on the printed circuit board 801 along a virtual second ring VC2 at a specified interval. The third light emitter 833 may be disposed on the printed circuit board 801 along the virtual second ring VC2 at a specified interval. The virtual second ring VC2 may be formed to surround the virtual first ring VC1. For example, the virtual second ring VC2 may be formed in the same or different shape as the virtual first ring VC1. The virtual second ring VC2 may be formed in a circular, elliptical, or polygonal shape.

[0117] Figure 9a and 9b are views showing the arrangement of sensor modules of an electronic device according to an embodiment, and Figure 9c and 9d are views for explaining Figure 9a and 9b the beam angles of the light emitting units shown in

[0118] Referring to Figure 9a and Figure 9b , each of the sensor modules 900 may include a plurality of light emitting units 910 and a plurality of light receiving units 920.

[0119] According to an embodiment, asFigure 9a As shown, a plurality of light emitting units 910 may include a first light emitting unit 911, a second light emitting unit 912, and a third light emitting unit 913. One of the first light emitting unit 911, the second light emitting unit 912, and the third light emitting unit 913 may have a beam angle different from that of at least one of the remaining light emitting units. Among the first light emitting unit 911, the second light emitting unit 912, and the third light emitting unit 913, the first light emitting unit 911 may have a wider beam angle than the second light emitting unit 912 and the third light emitting unit 913. The second light emitting unit 912 may have a narrower beam angle than the first light emitting unit 911 and the third light emitting unit 913. The third light emitting unit 913 may have a beam angle smaller than that of the first light emitting unit 911 and larger than that of the second light emitting unit 912. A plurality of light receiving units 920 may include a first light receiving unit 921, a second light receiving unit 922, and a third light receiving unit 923. The separation distance between the first light receiving unit 921 to the third light receiving units 922 and 923 and the light emitting units 910 may be set depending on the beam angle of the adjacent light emitting units 910. The first light emitting unit 911 having a wider beam angle than the second light emitting unit 912 and the third light emitting unit 913 may be spaced apart from the first light receiving unit 921 and the third light receiving unit 923 by a first distance Da. The second light emitting unit 912 having a beam angle narrower than the first light emitting unit 911 and the third light emitting unit 913 may be spaced apart from the first light receiving unit 921 and the second light receiving unit 922 by a second distance Db shorter than the first distance Da. The third light emitting unit 913 having a beam angle narrower than that of the first light emitting unit 911 and wider than that of the second light emitting unit 912 may be spaced apart from the second light receiving unit 922 and the third light receiving unit 923 by a third distance Dc shorter than the first distance Da and longer than the second distance Db.

[0120] According to an embodiment, as Figure 9b shown, a plurality of light emitting units 910 may include a first light emitting unit 911, a second light emitting unit 912, a third light emitting unit 913, and a fourth light emitting unit 914. A plurality of light receiving units 920 may include a first light receiving unit 921, a second light receiving unit 922, a third light receiving unit 923, and a fourth light receiving unit 924. Figure 9b The sensor module 900 shown may include the same components as Figure 9a the sensor module shown, except that Figure 9b the sensor module 900 shown further includes a fourth light emitting unit 914 and a fourth light receiving unit 924. Therefore, the previous description may be applied to the same components or operations.

[0121] Figure 9bEach of the first light-emitting unit 911, the second light-emitting unit 912, the third light-emitting unit 913, and the fourth light-emitting unit 914 shown may include a light-emitting body that emits light in a substantially same wavelength band. For example, each of the first light-emitting unit 911, the second light-emitting unit 912, the third light-emitting unit 913, and the fourth light-emitting unit 914 may include a first light-emitting body 931 that emits light in a substantially same wavelength band. Each of the first light-emitting unit 911 and the third light-emitting unit 913 may include a second light-emitting body 932 and a third light-emitting body 933 that emit light in different wavelength bands. The second light-emitting body 932 and the third light-emitting body 933 may emit light in the same wavelength band or may emit light in different wavelength bands.

[0122] According to an embodiment, the first light-emitting body 931 may output light in a green wavelength band having a relatively high absorption coefficient. The absorption coefficient may refer to a coefficient indicating a rate at which output light emitted from the plurality of light-emitting units 910 decreases in a user's body. Light in the green wavelength band may enter a user's body tissue shallowly because light in the green wavelength band has a relatively high absorption coefficient compared to light in other wavelength bands. When light in the green wavelength band is used, it is strong against movement, but the skin transmittance may be low.

[0123] One of the second light-emitting body 932 and the third light-emitting body 933 may output light in a red wavelength band having a relatively low absorption coefficient, and the other of the second light-emitting body 932 and the third light-emitting body 933 may output light in an infrared wavelength band having a relatively low absorption coefficient. Light in the red wavelength band or light in the infrared wavelength band may enter a user's body tissue deeply because light in the red wavelength band or light in the infrared wavelength band has a relatively low absorption coefficient. When light in the red wavelength band or light in the infrared wavelength band is used, the skin transmittance may be high. However, the signal intensity may be weak, and the light may be sensitive to movement.

[0124] According to an embodiment, as Figure 9c and 9d shown, light emitted from the plurality of light-emitting units 910 may have various intensity ranges. As will be explained below, an angle between rays having 10% of the maximum intensity may be referred to as a field angle θf. An angle between rays having 50% intensity may be referred to as a beam angle θb1 or θb2.

[0125] The light emitted in a direction perpendicular to the light-emitting surface of each of the plurality of light-emitting units 910 may have a maximum luminous intensity (about 100%). The irradiation range of light having an intensity of about 50% or more of the maximum luminous intensity (about 100%) may be referred to as the beam angle θb1 or θb2. The beam angle θb1 or θb2 may represent the range of light emission from the light-emitting unit 910. The beam angle θb1 or θb2 may be a characteristic value for determining the angle at which irradiation is possible at the position of the maximum luminous intensity (about 100%). The irradiation range of light having an intensity of about 10% or more of the maximum luminous intensity (about 100%) may be referred to as the field angle θf.

[0126] One of the plurality of light-emitting units 910 may have a beam angle different from that of at least one of the remaining light-emitting units. For example, as Figure 9c and 9d shown, the beam angle θb2 of the second light-emitting unit 912 may be smaller than the beam angle θb1 of the first light-emitting unit 911. The separation distance between the second light-emitting unit 912 having the small beam angle θb2 and the second light-receiving unit 922 may be shorter than the separation distance between the first light-emitting unit 911 having the large beam angle θb1 and the first light-receiving unit 921.

[0127] In some embodiments, the distance between the light-emitting unit and the adjacent light-receiving unit may be based on the beam angle θb1. For example, the distance between the light-receiving unit and the light-emitting unit may be set such that the light reflected at the beam angle at a predetermined distance will be received by the light-receiving unit. For example, the distance between the light-receiving unit and the light-emitting unit may be set such that the light ray emitted from the light-emitting unit at the beam angle (which is reflected from the user's skin at a 2 mm distance) will be received by the light-receiving unit. In some embodiments, the distance between the light-receiving unit and the light-emitting unit may be several mm (e.g., 1 mm to 5 mm) to several tens of mm, depending on the typical distance between the sensor module and the user's skin.

[0128] Figure 10a 、 10b and 10c are views showing various examples of the light-emitting body according to an embodiment.

[0129] Referring to Figure 10a 、 10b and 10c, the beam angle of the light-emitting body 1010 can be adjusted by an optical member disposed above the light-emitting chip or components included in the light-emitting chip (e.g., electrodes or / and insulators). The beam angle can be reduced by, for example, a light-blocking film ( Figure 10a ), a slit ([[]] Figure 10b [[]]) that limits the emission area, or a lens structure ( Figure 10b ). Figure 10c ) to reduce.

[0130] For example, asFigure 10a As shown, an optical member formed of a light-blocking film 1030 may be disposed above a light-emitting chip of a light-emitting body 1010. The emission region of light emitted from the light-emitting chip at a first light beam angle θb1 may be narrowed by the light-blocking film 1030, and thus the first light beam angle θb1 of the light-emitting body 1010 may be reduced to a second light beam angle θb2. The light-emitting body 1010 not including the light-blocking film 1030 may emit light at the first light beam angle θb1. The light-emitting body 1010 including the light-blocking film 1030 may emit light at a second light beam angle θb2 that is less than the first light beam angle θb1.

[0131] In another example, as Figure 10b shown, an optical member including a slit 1040 may be disposed above a light-emitting chip of a light-emitting body 1010. A part of the light emitted from the light-emitting chip at a first light beam angle θb1 may be output through the slit 1040, and the remaining part of the light may be blocked by a region other than the slit 1040. Accordingly, the emission region of the light emitted from the light-emitting chip at the first light beam angle θb1 may be limited to the region of the slit 1040, and thus the first light beam angle θb1 of the light-emitting body 1010 may be reduced to a second light beam angle θb2. The light-emitting body 1010 not including the slit 1040 may emit light at the first light beam angle θb1. The light-emitting body 1010 including the slit 1040 may emit light at a second light beam angle θb2 that is less than the first light beam angle θb1.

[0132] In another example, as Figure 10c shown, an optical member formed of a lens structure 1020 may be disposed above a light-emitting chip of a light-emitting body 1010. The emission region of the light emitted from the light-emitting chip at a first light beam angle θb1 may be narrowed by the lens structure 1020, and thus the first light beam angle b1 of the light-emitting body 1010 may be reduced to a second light beam angle θb2. For example, the lens structure 1020 may include at least one of a total internal reflection (TIR) lens or a spherical lens. The light-emitting body 1010 not including the lens structure 1020 may emit light at the first light beam angle θb1. The light-emitting body 1010 including the lens structure 1020 may emit light at a second light beam angle θb2 that is less than the first light beam angle θb1.

[0133] Figures 11a to 11c is a view showing an example of measuring a biometric signal using an electronic device including a sensor module according to an embodiment.

[0134] Referring to Figures 11a to 11c , an electronic device according to an embodiment may include a window 1140, a light-emitting body 1110, a light-receiving unit 1120, and a partition wall 1130.

[0135] One side of the window 1140 (e.g., FIGS. 2 and Figure 3The front plate 201) can come into contact with the user's body 1150, and the opposite side of the window 1140 can come into contact with the partition wall 1130.

[0136] The partition wall 1130 can prevent light emitted from at least one light emitter 1111 included in the light emitter 1110 from directly entering the light receiving unit 1120. The partition wall 1130 can be formed of a light-absorbing material to prevent light of any wavelength band from directly entering the light receiving unit 1120. The partition wall 1130 can be disposed between the light emitter 1110 and the light receiving unit 1120. The separation distance between the light emitter 1110 and the partition wall 1130 can be equal to or different from the separation distance between the light receiving unit 1120 and the partition wall 1130.

[0137] The light emitter 1110 can include at least one light emitter 1111. When the light emitter 1111 applies light to the user's body 1150, the light can be diffused within the user's body 1150. Most of the diffused light can be absorbed into the user's skin, blood, and tissues, and a part of the light can be reflected and radiated out of the skin during the processes of diffusion and scattering. A part of the light radiated out of the skin can be obtained through the light receiving unit 1120.

[0138] According to an embodiment, it may be difficult to obtain, by the light receiving unit 1120, light that travels toward the opposite side of the light receiving unit 1120 after being input into the user's skin. Light that travels toward the light receiving unit 1120 after being input into the user's skin can be obtained by the light receiving unit 1120. Light that is incident on the user's skin so as to be close to the light receiving unit 1120 can be obtained by the light receiving unit 1120. Accordingly, when compared with the virtual centers CL1, CL2, and CL3 where the maximum luminous intensities LMax1, LMax2, and LMax3 of the output light beams LL1, LL2, and LL3 emitted by the light emitter 1110 occur, the virtual centers CP1, CP2, and CP3 where the maximum luminous intensities PMax1, PMax2, and PMax3 of the reflected light beams PL1, PL2, and PL3 incident on the light receiving unit 1120 occur can be biased toward the light receiving unit 1120. The light receiving unit 1120 can receive the reflected light beams PL1, PL2, and PL3 having a high light intensity only when the light receiving unit 1120 is disposed close to the virtual centers CP1, CP2, and CP3 of the reflected light beams PL1, PL2, and PL3 incident on the light receiving unit 1120. As the beam angles θ1, θ2, and θ3 of the light decrease, the virtual centers CP1, CP2, and CP3 of the reflected light beams PL1, PL2, and PL3 can move toward the virtual centers CL1, CL2, and CL3 of the output light beams LL1, LL2, and LL3, and as the beam angles θ1, θ2, and θ3 of the light emitter 1110 increase, the virtual centers CP1, CP2, and CP3 of the reflected light beams PL1, PL2, and PL3 can move away from the virtual centers CL1, CL2, and CL3 of the output light beams LL1, LL2, and LL3.

[0139] The separation distance between the light emitter 1110 and the light receiving unit 1120 can be set in consideration of the beam angle of the light emitter 1110. As the beam angle of the light emitter 1110 decreases, the separation distance between the light emitter 1110 and the light receiving unit 1120 can be set to be relatively short. As the beam angle of the light emitter 1110 increases, the separation distance between the light emitter 1110 and the light receiving unit 1120 can be set to be relatively long. As the beam angle of the light emitter 1110 decreases, the virtual centers CP1, CP2, and CP3 of the reflected light beams PL1, PL2, and PL3 incident on the light receiving unit 1120 can move toward the light receiving unit 1120. Accordingly, the light receiving unit 1120 can receive the reflected light beams PL1, PL2, and PL3 with low light loss.

[0140] For example, as Figure 11aAs shown, the light emitter 1110 may have a relatively wide first beam angle θ1. In this case, the light emitter 1110 and the light receiving unit 1120 may be spaced apart from each other by a first distance D1. At least one of the light emitter 1110 or the light receiving unit 1120 may be spaced apart from the partition wall 1130 by a first separation distance S1. The first output beam LL1 having the first beam angle θ1 emitted by the light emitter 1110 may be reflected from the user's body 1150. The reflected first output beam LL1 may be obtained as a first reflected beam PL1 with low light loss by the light receiving unit 1120 spaced apart from the light emitter 1110 by the first distance D1.

[0141] In another example, as Figure 11b shown, the light emitter 1110 may have a second beam angle θ2 narrower than the first beam angle θ1. In this case, the light emitter 1110 and the light receiving unit 1120 may be spaced apart from each other by a second distance D2 shorter than the first distance D1. At least one of the light emitter 1110 or the light receiving unit 1120 may be spaced apart from the partition wall 1130 by a second separation distance S2 shorter than the first separation distance S1. The second output beam LL2 having the second beam angle θ2 narrower than the first beam angle θ1 emitted by the light emitter 1110 may be reflected from the user's body 1150. The reflected second output beam LL2 may be obtained as a second reflected beam PL2 with low light loss by the light receiving unit 1120 spaced apart from the light emitter 1110 by a second distance D2 shorter than the first distance D1.

[0142] In another example, as Figure 11c shown, the light emitter 1110 may have a third beam angle θ3 narrower than the second beam angle θ2. In this case, the light emitter 1110 and the light receiving unit 1120 may be spaced apart from each other by a third distance D3 shorter than the second distance D2. At least one of the light emitter 1110 or the light receiving unit 1120 may be spaced apart from the partition wall 1130 by a third separation distance S3 shorter than the second separation distance S2. Accordingly, the third output beam LL3 having the third beam angle θ3 narrower than the second beam angle θ2 emitted by the light emitter 1110 may be reflected from the user's body 1150. The reflected third output beam LL3 may be obtained as a third reflected beam PL3 with high light intensity by the light receiving unit 1120 spaced apart from the light emitter 1110 by a third distance D3 shorter than the second distance D2.

[0143] According to an embodiment, the reflected light beams PL1, PL2, and PL3 sensed by the light receiving unit 1120 may include a direct current (DC) component and an alternating current (AC) component. For example, the reflected light beams PL1, PL2, and PL3 may include a DC component with a certain amplitude returned from the skin, tissue, or pigment (the light emitted from the light emitter 1110 is reflected from the skin, tissue, or pigment) and an AC component with a certain amplitude returned from the user's blood (the light emitted from the light emitter 1110 is reflected from the user's blood). The AC component may have an amplitude and a period due to blood changes caused by a heartbeat occurring according to the heart movement. For example, the reflected light beams PL1, PL2, and PL3 may include at least one of a venous blood DC component absorbed or reflected by venous blood in capillaries, an arterial blood DC component absorbed or reflected by arterial blood in capillaries, or an AC component of arterial blood.

[0144] According to an embodiment, the ratio of the components of the reflected light obtained by the light receiving unit 1120 may vary according to the beam angle of the light emitter 1110. For example, as Figure 11a shown, the light emitter 1110 having a large beam angle θ1 may be disposed at a long separation distance from the light receiving unit 1120. The first output light beam LL1 emitted from the light emitter 1110 having a large beam angle θ1 may be reflected after passing through blood vessels in the user's body 1150 and then may be incident on the light receiving unit 1120 as a first reflected light beam PL1. Accordingly, the ratio of the AC component of the first reflected light beam PL1 may be higher than the ratio of the DC component of the first reflected light beam PL1.

[0145] As Figure 11c shown, the light emitter 1110 having a small beam angle θ3 may be disposed at a short separation distance from the light receiving unit 1120. The third output light beam LL3 emitted from the light emitter 1110 having a small beam angle θ3 may be reflected from the skin tissue without passing through the user's blood vessels and then may be incident on the light receiving unit 1120 as a third reflected light beam PL3. Accordingly, the ratio of the DC component of the third reflected light beam PL3 may be higher than the ratio of the AC component of the third reflected light beam PL3. Although the ratio of the AC component of the third reflected light beam PL3 is lower than the ratio of the DC component of the third reflected light beam PL3, the amplitude of the AC component of the third reflected light beam PL3 may also be greater than the amplitude of the ratio of the DC component of the third reflected light beam PL3.

[0146] According to an embodiment, the amplitude of the AC component of the reflected light obtained by the light receiving unit 1120 may vary according to the separation distance between the light emitter 1110 and the light receiving unit 1120 determined by the beam angles θ1, θ2, and θ3 of the light emitter 1110. The amplitude of the AC component of the third reflected light beam PL3 obtained by the light receiving unit 1120 disposed at a short separation distance from the light emitter 1110 may be greater than the amplitude of the AC component of the first reflected light beam PL1 obtained by the light receiving unit 1120 disposed at a long separation distance from the light emitter 1110. Since the AC component of the third reflected light beam PL3 obtained by the light receiving unit 1120 disposed at a short separation distance from the light emitter 1110 having a small beam angle has a relatively large amplitude, the light receiving unit 1120 can obtain sufficient light receiving efficiency even when the light amount of the light emitter 1110 decreases. Therefore, even when the current intensity supplied to the light emitter 1110 having a small beam angle is reduced, the signal quality performance can be maintained. In addition, current consumption can be minimized because the intensity of the current supplied to the light emitter 1110 having a small beam angle can be reduced.

[0147] According to an embodiment, the range of the light applied to the user's skin may vary according to the beam angle of the light emitter 1110. As the beam angle of the light emitter 1110 increases, the irradiation range of the output light incident on the user's skin may become wider. Since the irradiation range of the output light becomes wider, the reflection range of the reflected light obtained by the light receiving unit 1120 may also become wider, and thus the reflected light signal can be easily measured. For example, as Figure 11a shown, the first reflected light beam PL1 obtained by the light receiving unit 1120 disposed at a long separation distance from the light emitter 1110 having a large beam angle may have a relatively wide light distribution range. The amplitude of the AC component of the first reflected light beam PL1 may be relatively small. Therefore, the motion artifacts included in the AC component of the first reflected light beam PL1 can be easily removed, and the influence of the motion artifacts can be reduced.

[0148] Figure 12 is a flowchart for explaining a method of identifying signal characteristics of a sensor module of an electronic device according to an embodiment.

[0149] In the following embodiments, the operations may be performed sequentially. However, the operations are not necessarily performed sequentially. For example, the order of the operations may be changed, or at least two operations may be performed in parallel.

[0150] including according to Figure 12 the embodiments shown (e.g., Figure 1 the sensor module 176 of Figure 4 the sensor module 410 of Figure 5 the sensor module 500 of Figure 6The sensor module 600, Figure 7a and 7b the sensor module 700, Figure 8 the sensor module 800, or Figure 9a and 9b the sensor module 900) of the electronic device (e.g., Figure 2a and 2b the electronic device 200, Figure 3 the electronic device 300, or Figure 4 the biometric signal processing device 401) can be executed by a processor (e.g., Figure 1 the processor 120 or Figure 4 the processor 420). The following description will be given with reference to Figure 4 the biometric signal processing device 401 and Figure 9b the structure of the sensor module 900. Meanwhile, the description of the above technical features will be omitted hereinafter.

[0151] Referring to Figure 12 , in operation 1201, the processor 420 may recognize the reception of a request for obtaining a biometric signal corresponding to the body. The biometric signal corresponding to the body may be related to at least one of heart rate, stress index, blood oxygen saturation, maximum heart rate, body fat, local body fat, skin color, melanin, wrinkles, skin moisture level, blood glucose, or blood pressure.

[0152] The request for obtaining a biometric signal corresponding to the body may be received based on a user command or a pre-specified schedule. According to an embodiment, the request for obtaining a biometric signal may be received based on an event previously set by the user or the occurrence of an event depending on the user's health condition.

[0153] For example, the case based on the user's command may include the case where the user executes an application related to the acquisition of a biometric signal. In another example, the case based on the user's command may include the case of receiving a user input for activating the sensor module 900 including the light emitter 910 and the light receiving unit 920. In another example, the case based on the user's command may include the case of receiving a request for the user's biometric signal from an external device through the communication module.

[0154] In operation 1202, when a request for obtaining a biometric signal is received, the processor 420 may drive at least one of the plurality of light emitting units 910 included in the sensor module 900. The processor 420 may drive the plurality of light emitting units 910 and set a separation distance between the plurality of light emitting units 910 and the plurality of light receiving units 920 according to a beam angle. According to the beam angles of the plurality of light emitting units 910, at least one of the separation distances between the plurality of light emitting units 910 and the plurality of light receiving units 920 may be different from the remaining separation distances.

[0155] For example, the processor 420 may drive the plurality of light emitting units 910 at different timings. For example, the processor 420 may perform control such that the first light emitting unit 911, the second light emitting unit 912, the third light emitting unit 913, and the fourth light emitting unit 914 sequentially emit light.

[0156] In another example, the processor 420 may drive the plurality of light emitting units 910 at the same timing. For example, the processor 420 may perform control such that the first light emitting unit 911, the second light emitting unit 912, the third light emitting unit 913, and the fourth light emitting unit 914 emit light simultaneously.

[0157] According to an embodiment, the processor 420 may determine at least one of the intensity or irradiation range of the light of the plurality of light emitting units 910 based on biometric information related to a user stored in the memory 430. The memory 430 may store at least one of a user's skin color, blood pressure, blood sugar level, heart rate, blood oxygen saturation, stress index, or body fat index. For example, the processor 420 may determine at least one of the light intensity or irradiation range of the plurality of light emitting units 910 based on the skin color of the user stored in the memory 430. When the user's skin color is relatively light, the processor 420 may control the plurality of light emitting units 910 to output light having a relatively lower intensity than when the user's skin color is relatively dark. When the user's skin color is relatively dark, the processor 420 may control the plurality of light emitting units 910 to output light having a relatively higher intensity than when the user's skin color is relatively light. In another example, the processor 420 may select the light emitting bodies 910 and the light receiving units 920 having a separation distance with the best sensing performance of biometrics in the structure and position of the user's capillaries stored in the memory 430, and may control the driving of the selected light emitting bodies 910.

[0158] In operation 1203, the processor 420 may perform control such that at least one of the light receiving units 920 obtains the light output through at least one of the light emitting units 910.

[0159] For example, in operation 1203, the processor 420 may perform control such that when driving a plurality of light emitting units 910 sequentially in operation 1202, the plurality of light receiving units 920 receive optical signals sequentially. For example, after the light beams sequentially emitted by the first light emitting unit 911, the second light emitting unit 912, the third light emitting unit 913, and the fourth light emitting unit 914 are reflected from the user's body, the processor 420 may receive the optical signals sequentially detected by the first light receiving unit 921, the second light receiving unit 922, the third light receiving unit 923, and the fourth light receiving unit 924.

[0160] For example, in operation 1203, the processor 420 may perform control such that when driving a plurality of light emitting units 910 simultaneously in operation 1202, the plurality of light receiving units 920 receive optical signals simultaneously. For example, after the light beams simultaneously emitted by the first light emitting unit 911, the second light emitting unit 912, the third light emitting unit 913, and the fourth light emitting unit 914 are reflected from the user's body, the processor 420 may receive the optical signals simultaneously detected by the first light receiving unit 921, the second light receiving unit 922, the third light receiving unit 923, and the fourth light receiving unit 924.

[0161] In operation 1204, the processor 420 may sense a biometric signal based on at least some of the sensed optical signals. The processor 420 may sense the biometric signal by analyzing at least one of the DC component or the AC component of the optical signals sensed by the first light receiving unit 921, the second light receiving unit 922, the third light receiving unit 923, and the fourth light receiving unit 924.

[0162] For example, the processor 420 may determine whether the electronic device is worn on the user's body by analyzing the DC component of the optical signals sensed by the plurality of light receiving units 920. When the DC component of the optical signal sensed by at least one of the first light receiving unit 921, the second light receiving unit 922, the third light receiving unit 923, or the fourth light receiving unit 924 is greater than or equal to a specified value, the processor 420 may determine that the electronic device is worn on the user's body. When the DC component of the optical signal sensed by at least one of the first light receiving unit 921, the second light receiving unit 922, the third light receiving unit 923, or the fourth light receiving unit 924 is less than the specified value, the processor 420 may determine that the electronic device is not worn on the user's body. For example, when the amplitude of the DC component of the optical signal in a specified wavelength band is greater than or equal to the specified value, the processor 420 may determine that the electronic device is worn on the user's body. The processor 420 may determine whether the electronic device is worn on the user's body based on the DC component of the infrared optical signal that is least affected by the melanin present in the user's skin.

[0163] In another example, the processor 420 may estimate a biometric signal including a user's heart rate, blood glucose level, or blood pressure by analyzing the AC component of the optical signal sensed by the plurality of optical receiving units 920.

[0164] In another example, the processor 420 may estimate a biometric signal including a user's oxygen saturation by analyzing both the AC component and the DC component of the optical signal sensed by the plurality of optical receiving units 920. The processor 420 may estimate the oxygen saturation based on the ratio between the magnitude of the AC component and the magnitude of the DC component of the optical signal sensed by the plurality of optical receiving units 920. For example, the processor 420 may measure the user's oxygen saturation based on the ratio between the amplitude of the AC component and the amplitude of the DC component of the red light signal sensed by the plurality of optical receiving units 920 and the ratio between the amplitude of the AC component and the amplitude of the DC component of the infrared light signal sensed by the plurality of optical receiving units 920.

[0165] According to an embodiment, the processor 420 may use at least one of the plurality of biometric signals to determine the user's biometrics. The processor 420 may compare the characteristics of the plurality of biometric signals and may determine the best biometric signal for obtaining biometric information based on the comparison result. The processor 420 may determine the user's biometrics by analyzing a signal having a high frequency intensity or an AC component among the plurality of biometric signals as the main signal. The processor 420 may determine the user's biometrics by analyzing the remaining signals other than the main signal among the plurality of biometric signals as the auxiliary signals. The processor 420 may determine the characteristics of the user's biometrics by averaging the auxiliary signals.

[0166] For example, the processor 420 may determine the user's biometrics by analyzing the biometric signal sensed by the optical receiving unit 920 having the shortest separation distance from the light emitting unit 910 among the plurality of optical receiving units 920 as the main signal. The processor 420 may determine the user's biometrics by analyzing the biometric signals sensed by the remaining optical receiving units as the auxiliary signals.

[0167] According to an embodiment, the processor 420 may compare multiple biometric signals obtained through multiple light receiving units 920, and may select a biometric signal determined to be less affected by noise, or may correct the signal based on the identified noise. The noise may include at least one of motion artifacts or environmental noise. For example, when one of the multiple biometric signals undergoes a rapid change in a specific section, it may be determined that a noise component is included in the specific section, and in the specific section, a biometric signal may be obtained based on another biometric signal among the multiple biometric signals. In another example, the processor 420 may obtain an accurate biometric signal by analyzing the noise from one of the multiple biometric signals and compensating for the noise analyzed from another biometric signal among the multiple biometric signals.

[0168] The processor 420 may convert the sensed biometric signal into biometric information through a predetermined algorithm. The converted biometric information may be displayed through a user interface or may be transmitted to an external device.

[0169] Figure 13 is a flowchart for explaining a method of identifying signal characteristics of a sensor module of an electronic device according to an embodiment.

[0170] In the following embodiments, the operations may be performed sequentially. However, the operations are not necessarily performed sequentially. For example, the order of the operations may be changed, or at least two operations may be performed in parallel.

[0171] including according to Figure 13 shown in the embodiment of the sensor module (e.g., Figure 1 sensor module 176 of Figure 4 sensor module 410 of Figure 5 sensor module 500 of Figure 6 sensor module 600 of Figure 7a and 7b sensor module 700 of Figure 8 sensor module 800 of Figure 9a and 9b sensor module 900 of) the electronic device (e.g., Figure 2a and 2b electronic device 200 of Figure 3 electronic device 300 of Figure 4 or the operation of the biometric signal processing device 401) may be performed by a processor (e.g., Figure 1 processor 120 of Figure 4 processor 420 of). Reference will be made to Figure 4 the biometric signal processing device 401 (or electronic device) of Figure 9bThe structure of the sensor module 900 is described below. Meanwhile, descriptions of the above technical features will be omitted hereinafter.

[0172] Reference Figure 13 , in operation 1301, the processor 420 may recognize the reception of a request to obtain a biometric signal corresponding to the body. For example, the processor 420 may perform an operation substantially the same as Figure 12 operation 1201.

[0173] In operation 1302, the processor 420 may sense the movement of the electronic device 401 and may determine the current state of the user of the wearable electronic device 401 (e.g., normal state, sleep state, exercise state, or state in which a specified event occurs) based on the degree of the sensed movement. For example, the processor 420 may determine the current state of the user of the wearable electronic device 401 based on a motion signal of a motion sensor included in the sensor module. The motion sensor may be electrically connected to the processor 420 and may provide a motion signal generated according to the detection of the movement of the electronic device 401 to the processor 420.

[0174] Based on the motion signal of the motion sensor, when the movement of the electronic device 401 exceeds a specified threshold, the processor 420 may determine an active state (or, a state in which the user makes a large movement) (e.g., exercise state). Based on the motion signal of the motion sensor, when the movement of the electronic device 401 is less than or equal to the specified threshold, the processor 420 may determine an inactive state (or, a state in which the user moves slightly or does not move) (e.g., stationary state, sedentary state, or sleep state). In some embodiments, the large movement in the active state may be a movement exceeding a predetermined distance (e.g., 5 cm). In some embodiments, the small movement in the inactive state may be a movement less than a predetermined distance (e.g., 5 cm).

[0175] Meanwhile, although sensing the current state of the user through a motion sensor has been described, the present disclosure is not limited thereto. For example, the current state of the user may be recognized based on biometric information (e.g., heart rate information) from optical signals received through a plurality of light receiving units 920. In another example, the current state of the user may be recognized based on a motion signal from a motion sensor and biometric information (e.g., heart rate information) from a plurality of light receiving units 920.

[0176] When the processor 420 determines in operation 1302 that the user makes a large movement ( "Yes" in operation 1302), the processor 420 may drive at least one of a plurality of light emitting units 910 included in the sensor module 900 in operation 1303. For example, in operation 1303, the processor 420 may perform an operation substantially the same as operation 1202.

[0177] In operation 1304, the processor 420 may perform control such that at least one of the light receiving units obtains light output by at least one of the light emitting units. For example, in operation 1304, the processor 420 may perform substantially the same operations as in operation 1203.

[0178] In operation 1305, the processor 420 may sense a biometric signal based at least in part on the sensed optical signal. For example, in operation 1305, the processor 420 may perform substantially the same operations as in operation 1204.

[0179] When the processor 420 determines in operation 1302 that the user has made a small movement (No in operation 1302), the processor 420 may perform control in operation 1306 to drive a light emitter 910 selected from among the plurality of light emitting units 910 included in the sensor module 900. For example, the processor 420 may perform control to drive (e.g., activate or turn on) a light emitter 910 having a relatively small beam angle among the plurality of light emitting units 910. The processor 420 may perform control so as not to drive a light emitter 910 having a relatively large beam angle among the plurality of light emitting units 910. For example, the processor 420 may perform control such that, among the first to fourth light emitting units 911, 912, 913, and 914, the second light emitting unit 912 having a relatively small beam angle is driven, and the first light emitting unit 911, the third light emitting unit 913, and the fourth light emitting unit 914 having relatively large beam angles are not driven.

[0180] The processor 420 may perform control such that the plurality of light emitting units 910 output light having an output intensity within a specified range. The processor 420 may perform control such that the second light 912 having a relatively small beam angle outputs light having a lower intensity compared to the first light emitting unit 911, the third light emitting unit 913, and the fourth light emitting unit 914 having relatively large beam angles. The processor 420 may perform control such that the second light emitting unit 912 having a relatively small beam angle outputs light having a lower intensity when the user makes a small movement than when the user makes a large movement.

[0181] In operation 1307, the processor 420 may perform control to drive the optical receiving unit 920 selected from among a plurality of optical receiving units. For example, the processor 420 may perform control to drive the optical receiving unit 920 among the plurality of optical receiving units 920 that is disposed at a short distance from the light-emitting body 910 having a relatively small beam angle. The processor 420 may perform control so as not to drive the optical receiving unit 920 among the plurality of optical receiving units 920 that is disposed at a long distance from the light-emitting body 910 having a relatively large beam angle. For example, the processor 420 may perform control to drive the second optical receiving unit 922 among the first optical receiving unit 921 to the fourth optical receiving units 922, 922, 923, and 924 that is disposed at a short distance from the second light-emitting body 912 having a relatively small beam angle. The processor 420 may perform control so as not to drive the first optical receiving unit 921, the third optical receiving unit 923, and the fourth optical receiving unit 924 that are disposed at a long distance from the first light-emitting unit 911, the third light-emitting unit 913, and the fourth light-emitting unit 914 having a relatively large beam angle.

[0182] The processor 420 may perform control such that, among the plurality of optical receiving units, the optical receiving unit 920 disposed at a short distance from the light-emitting unit 910 obtains the light output through the light-emitting body 910 having a relatively small beam angle.

[0183] In operation 1308, the processor 420 may sense a biometric signal based on at least a part of the optical signal obtained through the optical receiving unit 920 among the plurality of optical receiving units 920 that is disposed at a short distance from the light-emitting unit 910. For example, the processor 420 may sense the biometric signal by analyzing at least one of the DC component or the AC component of the optical signal sensed through the second optical receiving unit 922, and the second optical receiving unit 922 is disposed at a relatively short distance from the second light-emitting body 912 having a relatively small beam angle.

[0184] The processor 420 may convert the sensed biometric signal into biometric information through a predetermined algorithm. The converted biometric information may be displayed through a user interface or may be transmitted to an external device.

[0185] Figure 14 A biometric signal obtained by an electronic device according to an embodiment is shown.

[0186] Reference Figure 14 , an electronic device according to an embodiment may obtain a plurality of biometric signals through an optical sensor including a plurality of light-emitting units and a plurality of optical receiving units. For example, the first biometric signal 1401 may be obtained by driving the first light-emitting unit (e.g., Figure 9b the first light-emitting body 911 emission unit) and from the first optical receiving unit (e.g., Figure 9bThe biometric signal obtained by removing noise from the optical signal received by the first optical receiving unit 921). The second biometric signal 1402 may be obtained by driving the second light emitting unit (e.g., Figure 9b the second light emitting unit 912) and removing noise from the optical signal received by the second optical receiving unit (e.g., Figure 9b the second optical receiving unit 922). The third biometric signal 1403 may be obtained by driving the third light emitting unit (e.g., Figure 9b the third light emitting unit 913) and removing noise from the optical signal received by the third optical receiving unit (e.g., Figure 9b the third optical receiving unit 923). The fourth biometric signal 1404 may be obtained by driving the fourth light emitting unit (e.g., Figure 9b the fourth light emitting unit 914) and removing noise from the optical signal received by the fourth optical receiving unit (e.g., Figure 9b the fourth optical receiving unit 924).

[0187] The processor (e.g., Figure 4 the processor 420) may use at least one of the multiple biometric signals to determine the biometric characteristics of the user. The processor may compare the characteristics of the multiple biometric signals and may determine the best biometric signal for obtaining biometric information based on the comparison result. For example, the processor may compare each biometric signal with the magnitude of at least one of noise (e.g., signal-to-noise ratio (SNR)) or AC component (e.g., peak-to-peak value), and may determine the best biometric signal for obtaining biometric information based on the comparison result.

[0188] For example, the processor may use the signal with a high AC component among the multiple biometric signals to determine the biometric characteristics of the user. Because Figure 14 the AC component of the second biometric signal 1402 shown is greater than the AC components of the first biometric signal 1401, the third biometric signal 1403, and the fourth biometric signal 1404, the processor may determine the biometric characteristics of the user by analyzing the second biometric signal 1402 as the main signal. The processor may determine the biometric characteristics of the user by analyzing the first biometric signal 1401, the third first biometric signal 1403, and the fourth first biometric signal 1404 as auxiliary signals. The processor may determine the biometric characteristics of the user by averaging the first biometric signal 1401, the third first biometric signal 1403, and the fourth first biometric signal 1404.

[0189] The above-described electronic device is not limited to the embodiments described with reference to the accompanying drawings, and the embodiments described with reference to the accompanying drawings may be combined and applied.

[0190] The accuracy and quality of biometric signals may decrease depending on the body structure of the user of the wearable electronic device and the user's current state.

[0191] Embodiments of the present disclosure described herein relate to an electronic device for measuring biometric signals suitable for the body structure and current state of a user.

[0192] The technical problems to be solved by the present disclosure are not limited to the above problems, and any other technical problems not mentioned herein will be clearly understood by those skilled in the art to which the present disclosure pertains from the following description.

[0193] According to an embodiment of the present disclosure, an electronic device may include: a plurality of light emitting units spaced apart from each other to form an annular shape on a printed circuit board; at least one light receiving unit disposed between the plurality of light emitting units; and a processor configured to analyze light generated from the light emitting units and incident on the light receiving unit, wherein a separation distance between each of the plurality of light emitting units and the at least one light receiving unit is such that the at least one light receiving unit is configured to receive reflected light from light emitted from each of the plurality of light emitting units at a beam angle and reflected from a predetermined distance from the printed circuit board.

[0194] According to an embodiment, the at least one light receiving unit may include a plurality of light receiving units, and at least one of the separation distances between the plurality of light emitting units and the plurality of light receiving units may be different from the remaining separation distances.

[0195] According to an embodiment, the plurality of light emitting units may include a first light emitting unit and a second light emitting unit having different beam angles, and the at least one light receiving unit may include a first light receiving unit spaced apart from the first light emitting unit by a first distance and spaced apart from the second light emitting unit by a second distance different from the first distance.

[0196] According to an embodiment, the plurality of light emitting units may include a first light emitting unit, a second light emitting unit, and a third light emitting unit having different beam angles. The at least one light receiving unit may include a first light receiving unit, a second light receiving unit, and a third light receiving unit. The first light emitting unit may be disposed between the first light receiving unit and the third light receiving unit and may be spaced apart from the first light receiving unit and the third light receiving unit by a first distance. The second light emitting unit may be disposed between the first light receiving unit and the second light receiving unit and may be spaced apart from the first light receiving unit and the second light receiving unit by a second distance different from the first distance. The third light emitting unit may be disposed between the second light receiving unit and the third light receiving unit and may be spaced apart from the second light receiving unit and the third light receiving unit by a third distance different from the first distance and the second distance.

[0197] According to an embodiment, the plurality of light emitting units may include a first light emitting unit and a second light emitting unit having different beam angles. At least one light receiving unit may include a first light receiving unit, a second light receiving unit, a third light receiving unit, and a fourth light receiving unit. The first light emitting unit may be disposed between the first light receiving unit and the second light receiving unit, and may be spaced apart from the first light receiving unit and the second light receiving unit by a first distance. The second light emitting unit may be disposed between the third light receiving unit and the fourth light receiving unit, and may be spaced apart from the third light receiving unit and the fourth light receiving unit by a second distance different from the first distance.

[0198] According to an embodiment, each of the first light emitting unit and the second light emitting unit may include at least one first light emitter that emits light in a specified wavelength band. The first light emitters of the first light emitting unit and the second light emitting unit may have different beam angles.

[0199] According to an embodiment, the first light emitting unit may have a larger beam angle than a third light emitting unit, and the third light emitting unit may have a larger beam angle than the second light emitting unit. The first distance may be longer than a third distance, and the third distance may be shorter than the second distance.

[0200] According to an embodiment, the electronic device may further include a partition wall disposed between the first light emitting unit and the first light receiving unit, a partition wall disposed between the first light receiving unit and the second light emitting unit, a partition wall disposed between the second light emitting unit and the second light receiving unit, a partition wall disposed between the second light receiving unit and the third light emitting unit, a partition wall disposed between the third light emitting unit and the third light receiving unit, and a partition wall disposed between the third light receiving unit and the first light emitting unit.

[0201] According to an embodiment, the second light emitting unit may include a light emitting chip that generates light in the same wavelength band as the first light emitting unit, and an optical member disposed on the light emitting chip. The optical member may be formed of a lens structure or an optical film that restricts the emission range of the light generated from the light emitting chip.

[0202] According to an embodiment, the second light emitting unit may include a light emitting chip that generates light in the same wavelength band as the first light emitting unit, and has a smaller light emission range than the first light emitting unit.

[0203] According to an embodiment, at least one of the plurality of light emitting units may be arranged to correspond to the light receiving unit in a one-to-one or one-to-many manner.

[0204] According to an embodiment, a processor may recognize a current state of a measurement target wearing an electronic device, may control driving of at least one of a plurality of light emitting units based on the current state of the measurement target, and may obtain an optical signal through at least one light receiving unit.

[0205] According to an embodiment, when the measurement target wearing the electronic device moves a distance exceeding a predetermined distance, the processor may obtain optical signals emitted from a first light emitting unit, a second light emitting unit, and a third light emitting unit through a first light receiving unit, a second light receiving unit, and a third light receiving unit, and when the measurement target moves a distance less than the predetermined distance, the processor may obtain an optical signal emitted from the second light emitting unit through the first light receiving unit and the second light receiving unit.

[0206] According to an embodiment, the processor may execute control to turn on the first light emitting unit, the second light emitting unit, the third light emitting unit, the first light receiving unit, the second light receiving unit, and the third light receiving unit when the measurement target wearing the electronic device moves a distance exceeding a predetermined distance; and may execute control to turn off the first light emitting unit, the third light emitting unit, and the third light receiving unit and turn on at least one of the second light emitting unit, the first light receiving unit, or the second light receiving unit when the measurement target moves a distance less than the predetermined distance.

[0207] According to an embodiment, the processor may execute control such that at least one of the first light emitting unit, the second light emitting unit, or the third light emitting unit emits light having a specified first intensity when the measurement target wearing the electronic device moves a distance exceeding a predetermined distance; and may execute control such that the second light emitting unit emits light having a second intensity lower than the first intensity when the measurement target wearing the electronic device moves a distance less than the predetermined distance.

[0208] According to an embodiment of the present disclosure, an electronic device may include: a plurality of light emitting units spaced apart from each other to form an annular shape; at least one light receiving unit disposed between the plurality of light emitting units; and a processor that analyzes light generated from the light emitting units and incident on the light receiving unit. Each of the first one or more light emitting units and the second one or more light emitting units included in the plurality of light emitting units may include at least one first light emitter that emits light in a specified wavelength band. The first light emitters of the first one or more light emitting units and the first light emitters of the second one or more light emitting units may have different beam angles. A separation distance between the first light emitters of the first one or more light emitting units and the light receiving unit may be different from a separation distance between the first light emitters of the second one or more light emitting units and the light receiving unit.

[0209] According to an embodiment, a plurality of light emitting units may include first one or more light emitting units, second one or more light emitting units having a beam angle smaller than that of the first one or more light emitting units, and third one or more light emitting units having a beam angle smaller than that of the first one or more light emitting units and larger than that of the second one or more light emitting units. At least one light receiving unit may include a first light receiving unit, a second light receiving unit, and a third light receiving unit. The first one or more light emitting units may be disposed between the first light receiving unit and the third light receiving unit and may be spaced apart from the first light receiving unit and the third light receiving unit by a first distance. The second one or more light emitting units may be disposed between the first light receiving unit and the second light receiving unit and may be spaced apart from the first light receiving unit and the second light receiving unit by a second distance different from the first distance. The third one or more light emitting units may be disposed between the second light receiving unit and the third light receiving unit and may be spaced apart from the second light receiving unit and the third light receiving unit by a third distance smaller than the first distance and larger than the second distance.

[0210] According to an embodiment, a processor may recognize a current state of a measurement target wearing an electronic device, may obtain optical signals emitted from the first one or more light emitting units, the second one or more light emitting units, and the third one or more light emitting units through the first light receiving unit, the second light receiving unit, and the third light receiving unit when the measurement target wearing the electronic device makes a large movement, and may obtain an optical signal emitted from one of the first light emitting unit, the second one or more light emitting units, and the third one or more light emitting units through at least two of the first light receiving unit, the second light receiving unit, and the third light receiving unit when the measurement target makes a small movement.

[0211] According to an embodiment of the present disclosure, the distance between the light emitting unit and the light receiving unit may be set to be suitable for the body structure of a user, and thus the quality of biometric signals may be improved.

[0212] According to an embodiment of the present disclosure, the driving of the light emitting unit may be controlled according to the current state of a user, and thus the quality of biometric signals may be improved.

[0213] In addition, according to an embodiment of the present disclosure, even if power consumption is reduced, signal quality performance may be maintained by controlling the driving of the light emitting unit according to the current state of a user.

[0214] An electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the present disclosure, the electronic device is not limited to the above-described electronic devices.

[0215] It should be understood that certain embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms corresponding to the respective embodiments. For the description of the drawings, like reference numerals may be used to refer to like or related elements. It will be understood that a singular noun corresponding to a term may include one or more things, unless the relevant context clearly indicates otherwise. As used herein, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C" and "at least one of A, B or C" may include any one or all possible combinations of the items listed together in the corresponding one of the plurality of phrases. As used herein, terms such as "first" and "second" or "1st" and "2nd" may be used to simply distinguish the corresponding components from another component, and do not limit the components in other respects (e.g., importance or order). It will be understood that in the case where the terms "operatively" or "communicatively" are used or in the case where the terms "operatively" or "communicatively" are not used, if an element (e.g., a first element) is referred to as "coupled with another element (e.g., a second element)", "coupled to another element (e.g., a second element)", "connected with another element (e.g., a second element)" or "connected to another element (e.g., a second element)", it means that the one element can be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0216] According to certain embodiments, each of the above components (e.g., a module or a program) may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in other components. According to various embodiments, one or more of the above components may be omitted, or one or more other components may be added. Optionally or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to certain embodiments, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as the corresponding one of the multiple components performed the one or more functions before integration. According to certain embodiments, the operations performed by a module, a program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more of the operations may be run in a different order or omitted, or one or more other operations may be added.

Claims

1. An electronic device, comprising: a plurality of light-emitting units spaced apart from each other to form an annular shape on a printed circuit board; at least one light-receiving unit disposed between the plurality of light-emitting units; and a processor configured to analyze light generated from the plurality of light-emitting units and incident on the at least one light-receiving unit, wherein a separation distance between each of the plurality of light-emitting units and the at least one light-receiving unit is such that the at least one light-receiving unit is configured to receive reflected light from light emitted from each of the plurality of light-emitting units at a beam angle.

2. The electronic device according to claim 1, wherein The at least one light-receiving unit includes a plurality of light-receiving units, wherein at least one of the separation distances between the plurality of light-emitting units and the plurality of light-receiving units is different from the remaining separation distances.

3. The electronic device according to claim 1, wherein, The plurality of light-emitting units includes a first light-emitting unit and a second light-emitting unit having different beam angles, wherein the at least one light-receiving unit includes a first light-receiving unit that is spaced apart from the first light-emitting unit by a first distance and is spaced apart from the second light-emitting unit by a second distance different from the first distance.

4. The electronic device according to claim 1, wherein, The plurality of light-emitting units includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit having different beam angles, wherein the at least one light-receiving unit includes a first light-receiving unit, a second light-receiving unit, and a third light-receiving unit, wherein the first light-emitting unit is disposed between the first light-receiving unit and the third light-receiving unit and is spaced apart from the first light-receiving unit and the third light-receiving unit by a first distance, wherein the second light-emitting unit is disposed between the first light-receiving unit and the second light-receiving unit and is spaced apart from the first light-receiving unit and the second light-receiving unit by a second distance different from the first distance, wherein the third light-emitting unit is disposed between the second light-receiving unit and the third light-receiving unit and is spaced apart from the second light-receiving unit and the third light-receiving unit by a third distance different from the first distance and the second distance.

5. The electronic device according to claim 1, wherein, The plurality of light-emitting units includes a first light-emitting unit and a second light-emitting unit having different beam angles, wherein the at least one light-receiving unit includes a first light-receiving unit, a second light-receiving unit, a third light-receiving unit, and a fourth light-receiving unit, wherein the first light-emitting unit is disposed between the first light-receiving unit and the second light-receiving unit and is spaced apart from the first light-receiving unit and the second light-receiving unit by a first distance, and wherein the second light-emitting unit is disposed between the third light-receiving unit and the fourth light-receiving unit and is spaced apart from the third light-receiving unit and the fourth light-receiving unit by a second distance different from the first distance.

6. The electronic device according to claim 3, wherein, Each of the first light-emitting unit and the second light-emitting unit includes at least one first light-emitting body configured to emit light in a specified wavelength band, and The first light-emitting bodies of the first light-emitting unit and the first light-emitting bodies of the second light-emitting unit have different beam angles.

7. The electronic device according to claim 4, wherein, The first light-emitting unit has a larger beam angle than the third light-emitting unit, and the third light-emitting unit has a larger beam angle than the second light-emitting unit, and wherein, the first distance is longer than the third distance, and the third distance is shorter than the second distance.

8. The electronic device according to claim 4, further comprising: a first partition wall disposed between the first light-emitting unit and the first light-receiving unit, a second partition wall disposed between the first light-receiving unit and the second light-emitting unit, a third partition wall disposed between the second light-emitting unit and the second light-receiving unit, a fourth partition wall disposed between the second light-receiving unit and the third light-emitting unit, a fifth partition wall disposed between the third light-emitting unit and the third light-receiving unit, and a sixth partition wall disposed between the third light-receiving unit and the first light-emitting unit.

9. The electronic device according to claim 3, wherein the second light-emitting unit includes: a light-emitting chip configured to generate light in the same wavelength band as the first light-emitting unit; and an optical member disposed above the light-emitting chip, and wherein, the optical member is formed of a lens structure or an optical film, and the lens structure or the optical film is configured to limit the emission range of the light generated from the light-emitting chip.

10. The electronic device according to claim 3, wherein, The second light-emitting unit includes a light-emitting chip configured to generate light in the same wavelength band as the first light-emitting unit, and the light-emitting chip has a smaller light emission range than the first light-emitting unit.

11. The electronic device according to claim 1, wherein, At least one of the plurality of light-emitting units is arranged to correspond to the at least one light-receiving unit in a one-to-one or one-to-many manner.

12. The electronic device according to claim 4, wherein, The processor: identifies the current state of the object to be measured wearing the electronic device; controls the driving of at least one of the plurality of light-emitting units according to the current state of the object to be measured; and obtains an optical signal through the at least one light-receiving unit.

13. The electronic device according to claim 12, wherein, The processor is configured to: when the object to be measured wearing the electronic device moves a distance exceeding a predetermined distance, obtain optical signals emitted from the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit through the first light-receiving unit, the second light-receiving unit, and the third light-receiving unit; and when the object to be measured moves a distance less than the predetermined distance, obtain an optical signal emitted from the second light-emitting unit through the first light-receiving unit and the second light-receiving unit.

14. The electronic device according to claim 13, wherein, The processor: when the object to be measured wearing the electronic device moves a distance exceeding the predetermined distance, performs control to turn on the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, the first light-receiving unit, the second light-receiving unit, and the third light-receiving unit; and Execute control to turn off the first light-emitting unit, the third light-emitting unit, and the third light-receiving unit and turn on at least one of the second light-emitting unit, the first light-receiving unit, or the second light-receiving unit when the object to be measured moves a distance less than the predetermined distance.

15. The electronic device according to claim 14, wherein, The processor: Execute control such that when the object to be measured wearing the electronic device moves a distance exceeding the predetermined distance, at least one of the first light-emitting unit, the second light-emitting unit, or the third light-emitting unit emits light with a specified first intensity; and Execute control such that when the object to be measured wearing the electronic device moves a distance less than the predetermined distance, the second light-emitting unit emits light with a second intensity lower than the first intensity.

Images