Blood pressure measurement method and electronic device supporting same

Abstract

An electronic device according to various embodiments of the present invention comprises: a first sensor configured to collect first information related to biometric information by using a part of a subject to be examined as a part to be examined; a second sensor configured to collect second information related to the orientation of the electronic device; a third sensor configured to collect third information related to the temperature of the part to be examined; a processor; and a memory. The memory may store instructions causing the electronic device to: if the signal quality for the first information is lower than a designated level, acquire, on the basis of the second information and the third information, a first result indicating whether the orientation of the electronic device corresponds to a designated reference orientation, and a second result indicating whether the temperature of the part to be examined corresponds to a designated reference temperature; and selectively provide a first guide related to the orientation of the electronic device or a second guide related to the temperature of the part to be examined on the basis of the first result and the second result.

Description

Blood pressure measurement method and electronic device supporting the same

[0001] Embodiments disclosed in this document relate to a method for measuring blood pressure and an electronic device supporting the same.

[0002] Electronic devices are evolving toward miniaturization and portability, while performing the same or more diverse functions. These devices are typically carried in a user's pocket or other portable device, but can also be worn on the wrist, head, or arm.

[0003] Additionally, electronic devices may be equipped with biometric sensors (e.g., health care sensors) to collect biometric information (e.g., health data). For example, electronic devices may collect biometric information such as blood pressure, blood sugar, heart rate, electrocardiogram, respiration, stress, or oxygen saturation.

[0004] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0005] Typically, electronic devices can measure blood pressure based on photoplethysmogram (PPG) signals acquired from biosensors. In this regard, the electronic devices can extract feature points corresponding to bodily changes from the PPG signals and use these to measure blood pressure.

[0006] However, PPG signals are susceptible to motion artifacts. For example, when acquiring PPG signals, movement of the subject or the biosensor can degrade the quality of the PPG signal, which can reduce the accuracy of blood pressure measurements.

[0007] Accordingly, at least one example among various embodiments relates to a blood pressure measurement method for improving measurement accuracy and an electronic device supporting the same.

[0008] In addition, at least one example among various embodiments relates to a blood pressure measurement method and an electronic device supporting the same for guiding appropriate actions that can improve the quality of a PPG signal in a situation where a PPG signal having a quality below a certain level is acquired.

[0009] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0010] According to various embodiments, an electronic device includes a first sensor configured to collect first information related to biometric information by using a part of a subject as a measuring area, a second sensor configured to collect second information related to a posture of the electronic device, a third sensor configured to collect third information related to a temperature of the subject, at least one processor, and a memory, wherein the memory includes at least one instruction, and the at least one instruction, when executed by the at least one processor, causes the electronic device to measure a signal quality of the first information, and if the signal quality is below a specified level: obtain a first result indicating whether a posture of the electronic device corresponds to a specified reference posture based on the second information; obtain a second result indicating whether a temperature of the subject corresponds to a specified reference temperature based on the third information; and selectively provide a first guide related to the posture of the electronic device or a second guide related to a temperature of the subject based on the first result and the second result.

[0011] According to various embodiments, an electronic device includes a biometric sensor configured to collect biometric information by using a part of a subject as a measuring area, a temperature sensor configured to collect temperature information about the measuring area, at least one processor, and a memory, wherein the memory includes at least one instruction, and when the at least one instruction is executed by the at least one processor, the electronic device estimates a first measurement parameter related to blood pressure measurement based on the biometric information, measures a first temperature for the measuring area based on the temperature information, obtains a second measurement parameter obtained by correcting the first measurement parameter based on the first temperature and a second temperature stored in the electronic device, and measures blood pressure based on the second measurement parameter.

[0012] According to various embodiments, an operating method of an electronic device may include an operation of collecting first information related to biometric information by using a part of a subject as a measuring area, an operation of measuring a signal quality for the first information, an operation of obtaining second information related to a posture of the electronic device and third information related to a temperature of the measured portion if the signal quality is below a specified level, an operation of obtaining a first result indicating whether the posture of the electronic device corresponds to a specified reference posture based on the second information, an operation of obtaining a second result indicating whether the temperature of the measured portion corresponds to a specified reference temperature based on the third information, and an operation of selectively providing a first guide related to the posture of the electronic device or a second guide related to the temperature of the measured portion based on the first result and the second result.

[0013] According to various embodiments, a computer-readable recording medium may store at least one instruction for collecting first information related to biometric information by using a part of a subject as a measuring area, measuring a signal quality for the first information, and if the signal quality is below a specified level: obtaining second information related to a posture of the electronic device and third information related to a temperature of the measured portion, obtaining a first result indicating whether the posture of the electronic device corresponds to a specified reference posture based on the second information, obtaining a second result indicating whether the temperature of the measured portion corresponds to a specified reference temperature based on the third information, and selectively providing a first guide related to the posture of the electronic device or a second guide related to the temperature of the measured portion based on the first result and the second result.

[0014] An electronic device according to various embodiments disclosed in this document can use a PPG signal having a certain level of quality for blood pressure measurement by guiding an appropriate action that can improve the quality of the PPG signal in a current measurement situation when a PPG signal having a quality below a certain level is acquired, thereby improving the accuracy of blood pressure measurement.

[0015] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0016] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0017] FIGS. 2A and 2B are drawings illustrating the form of an electronic device according to various embodiments.

[0018] FIG. 3 is a schematic diagram illustrating the configuration of an electronic device according to various embodiments.

[0019] FIG. 4 is a diagram for explaining a blood pressure measurement operation of an electronic device according to various embodiments.

[0020] Figure 5 is a diagram for explaining the quality of a PPG signal according to noise.

[0021] FIG. 6 is a drawing for explaining a guide for noise removal according to various embodiments.

[0022] Figure 7 is a diagram for explaining a PPG signal whose quality has been degraded by various factors other than noise.

[0023] FIG. 8 and FIG. 9 are drawings for explaining a guide for improving the quality of a PPG signal according to various embodiments.

[0024] FIG. 10A and FIG. 10B are drawings for explaining blood pressure measurement operations of an electronic device according to various embodiments.

[0025] FIG. 11 is a flowchart illustrating the operation of an electronic device according to various embodiments.

[0026] FIG. 12 is a flowchart illustrating a guide providing operation of an electronic device according to various embodiments.

[0027] FIG. 13 is a flowchart illustrating the operation of an electronic device according to various embodiments.

[0028] FIG. 14 is a flowchart illustrating the operation of an electronic device according to various embodiments.

[0029] Hereinafter, various embodiments of this document are described with reference to the attached drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and it should be understood that various modifications, equivalents, and / or alternatives of the embodiments of this document are included. In connection with the description of the drawings, similar reference numerals may be used for similar components.

[0030]

[0031] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments.

[0032] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0033] The processor (120) may control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) by executing, for example, software (e.g., a program (140)), and may perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculation, the processor (120) may store a command or data received from another component (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the command or data stored in the volatile memory (132), and store the resulting data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0034] The auxiliary processor (123) may control at least a part of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0035] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0036] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0037] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0038] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0039] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0040] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., an electronic device (102), a speaker, or headphones) directly or wirelessly connected to the electronic device (101).

[0041] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0042] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0043] 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., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0044] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0045] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0046] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0047] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0048] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a 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 module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0049] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can 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 one embodiment, the wireless communication module (192) may support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0050] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. According to some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0051] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0052] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0053] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service by itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0054]

[0055] According to one embodiment, the processor (120) (e.g., processing circuit) may be implemented as one or more IC (integrated circuit (or circuitry)) chips and may perform various data processing. The processor (120) may include at least one electrical circuit and may individually or collectively perform distributed processing of instructions (or programs, data) stored in the memory (130). The processor (120) may include a processor assembly including one or more processing circuits. The processor (120) may include any processing circuit operative to control the performance and operations of one or more components of the electronic device (101) (e.g., the memory (130), the display module (160), the sensor module (176) (e.g., a sensor), the camera module (180) (e.g., an image sensor), and / or the communication module (190) (e.g., a communication circuit)). For example, the processor (120) (e.g., an application processor (AP)) may be implemented as a system on chip (SoC) (e.g., a single chip or chipset). For example, the processor (120) may be implemented as multiple cores (or at least one core circuit), multiple chips, or multiple chipsets. For example, the processor (120) may include one or more processing circuits. For example, the processor (120) may include one or more processing circuits configured to individually and / or collectively perform various functions of the present disclosure. As a non-limiting example, at least a portion of the processor (120) may be included in a first chip of the electronic device (101), and at least another portion of the processor (120) may be included in a second chip of the electronic device (101) that is different from the first chip of the electronic device (101).

[0056]

[0057] FIG. 2a and FIG. 2b are drawings illustrating the form of an electronic device (200) according to various embodiments.

[0058] Referring to FIGS. 2A and 2B , the electronic device (200) (e.g., the electronic device (101) of FIG. 1 ) may be a wearable device in the form of a watch worn on a body part (e.g., a wrist). However, this is merely an example, and various embodiments are not limited thereto. For example, the electronic device (200) may also be implemented as a wearable device in various forms, such as a band or a ring.

[0059] According to various embodiments, the electronic device (200) may be implemented in various forms. According to one embodiment, as illustrated, the electronic device (200) may be implemented in a circular shape that is attachable to a part of the body.

[0060] However, this is merely an example, and various embodiments are not limited thereto. For example, the electronic device (200) may be implemented in various shapes, such as rectangular, square, or oval, that can be attached to a part of the user's body. Additionally, the electronic device (200) may be implemented in a shape with a curved surface for the user's grip.

[0061] According to various embodiments, the electronic device (200) may include various components. The various components may be at least some of the components of the electronic device (101) illustrated in FIG. 1. This will be described in detail with reference to FIG. 3 below.

[0062]

[0063] FIG. 3 is a diagram schematically illustrating the configuration of an electronic device (200) according to various embodiments. FIG. 4 is a diagram for explaining the blood pressure measurement operation of an electronic device (200) according to various embodiments.

[0064] Referring to FIGS. 2A to 3, an electronic device (200) according to various embodiments may be configured with a housing (201) (e.g., at least one housing (201)), a sensor module (210) (e.g., at least one sensor module (210)), a display (220) (e.g., at least one display (220)), a memory (230) (e.g., at least one memory (230)), and a processor (240) (e.g., at least one processor (240)).

[0065] The components of the electronic device (200) described above are only one embodiment, and various embodiments are not limited thereto. For example, the electronic device (200) may be implemented to have more or fewer components than the components illustrated in FIG. 3. For example, at least some of the components of the electronic device (101) illustrated in FIG. 1 (e.g., the input module (150), the battery (189), or the antenna module (197)) may be included as a component of the electronic device (200). In addition, at least one of the components of the electronic device (200) illustrated in FIG. 3 may be integrated with another component.

[0066] According to various embodiments, the housing (201) may form the exterior of the electronic device (200). For example, the housing (201) may include a first side (e.g., a front side), a second side (e.g., a back side), and a third side (e.g., a side side) surrounding a space between the first side and the second side.

[0067] The housing (201) may provide a space for mounting components of the electronic device (200) (e.g., a sensor module (210), a display (220), a memory (230), and a processor (240)). According to one embodiment, some of the components of the electronic device (200) mounted inside the housing (201) (e.g., a part of the sensor module (210), the display (220)) may be exposed through at least a part of the housing (201).

[0068] According to various embodiments, the sensor module (210) may be composed of a plurality of sensors. According to one embodiment, the sensor module (210) may include a first sensor (211) configured to obtain biometric information (e.g., at least one first sensor (211)), a second sensor (212) configured to obtain information related to a posture and / or wearing state of the electronic device (200) (e.g., at least one second sensor (212)), and a third sensor (213) configured to obtain temperature information for a specific part of the body (e.g., a test part) (e.g., at least one third sensor (213)). For example, the sensor module (210) may be the sensor module (176) illustrated in FIG. 1.

[0069] The configuration of the sensor module (210) described above is one embodiment, and various embodiments are not limited thereto. For example, the sensor module (210) may be implemented with more sensors than the sensors described above. For example, at least one electrode connected to the first sensor (211) and configured to acquire biometric information about a part of the body may be added to the configuration of the sensor module (210). In addition, the sensor module (210) may be implemented with fewer sensors than the sensors described above, and depending on the embodiment, at least one of the first sensor (211) to the third sensor (213) may be implemented with multiple sensors.

[0070] According to various embodiments, the first sensor (211) can obtain a pulse signal for a target body (target area) (e.g., a wrist). The pulse signal may be a PPG signal. According to an embodiment, the first sensor (211) may be composed of a light-emitting unit (211-1) and a light-receiving unit (211-2).

[0071] According to one embodiment, the light emitting unit (211-1) may be configured with a first light emitting element that irradiates light of a first wavelength (e.g., red (wavelength: 600 nm to 700 nm)) to the target portion and a second light emitting element that irradiates light of a second wavelength (e.g., infrared (wavelength: 780 nm to 1000 μm)) to the target portion. For example, the first light emitting element and the second light emitting element constituting the light emitting unit (211-1) may be implemented using a light emitting diode (LED), an organic light emitting diode (OLED), a quantum dot light emitting diode (QLED), a laser diode, or a phosphor.

[0072] However, this is merely an example, and the present document is not limited thereto. For example, the light emitting unit (211-1) may further include one or more additional light emitting elements having the same or different wavelengths (e.g., blue wavelength, green wavelength, etc.) as the first light emitting element and the second light emitting element.

[0073] According to one embodiment, the light receiving unit (211-2) can receive light, convert the received light into photoelectric and generate a current signal. For example, the light receiving unit (211-2) can include at least one light receiving element for detecting light of a first wavelength irradiated from a first light emitting element and light of a second wavelength irradiated from a second light emitting element. For example, the at least one light receiving element can include a photo detector or a photo diode.

[0074] According to an embodiment, the light receiving unit (211-2) can detect light irradiated from the light emitting unit (211-1) (e.g., the first light emitting element and the second light emitting element) and reflected from the target unit. In this regard, the light receiving unit (211-2) and the light emitting unit (211-1) can be arranged on the same surface.

[0075] According to an embodiment, the light receiving unit (211-2) can detect light irradiated from the light emitting unit (211-1) and transmitted through the detection unit. In this regard, the light receiving unit (211-2) and the light emitting unit (211-1) can be arranged to face each other.

[0076] However, this is merely an example, and this document is not limited thereto, and the light receiving unit (211-1) and the light emitting unit (211-2) may be arranged in various forms. In addition, at least a portion of the first sensor (211) may be exposed through a portion of the second surface (e.g., the rear) of the housing (201).

[0077] According to various embodiments, the second sensor (212) may obtain information related to inertial force as at least a portion of information related to the posture (and / or movement) of the electronic device (200). For example, the second sensor (212) may be configured as at least one of an acceleration sensor, a gyro sensor, a gesture sensor, or a geomagnetic sensor. According to one embodiment, the second sensor (212) may obtain information related to proximity to the target object as at least a portion of information related to the wearing state of the electronic device (200). For example, the second sensor (212) may further include a proximity sensor.

[0078] According to various embodiments, the third sensor (213) can obtain temperature information about the subject. The subject may be a part of the body (e.g., a wrist) that is in close contact with (e.g., in contact with) the first sensor (211) while the electronic device (200) is worn on the body. For example, the third sensor (213) may include a temperature sensor configured to measure the temperature of a specific part of the body (e.g., the subject) rather than body temperature.

[0079] According to an embodiment, the third sensor (213) may be disposed on the same surface as the first sensor (211) toward the detection unit. For example, the third sensor (213) may be disposed adjacent to the first sensor (211). For example, the third sensor (213) may be exposed through a portion of the second surface (e.g., the rear surface) of the housing (201). For example, the third sensor (213) may be configured to acquire temperature information about the detection unit in a contact-type or non-contact-type manner.

[0080] According to various embodiments, the display (220) may be used to provide information processed in the electronic device (200). In one embodiment, the display (220) may display a screen or user interface for information processed in the electronic device (200). For example, the display (200) may be exposed through a portion of a first surface (e.g., a front surface) of the housing (201). For example, the display (220) may be the display module (160) illustrated in FIG. 1.

[0081] According to various embodiments, the memory (230) may store various data used by components of the electronic device (200). According to one embodiment, the memory (230) may store instructions that cause the electronic device (200) to perform functions (e.g., operations). For example, the memory (230) may be the memory (130) illustrated in FIG. 1.

[0082] According to various embodiments, the processor (240) may be operatively connected to the sensor module (210), the display (220), and the memory (230), and may control various components (e.g., hardware or software components) of the electronic device (200). For example, the processor (240) may include circuitry such as a central processing unit (CPU), a microprocessor unit (MPU), an application processor (AP), a communication processor (CP), a system on chip (SoC), and an integrated circuit (IC). For example, the processor (240) may be the processor (120) illustrated in FIG. 1.

[0083] According to various embodiments, the processor (240) may support functions related to blood pressure measurement of the electronic device (200).

[0084] According to one embodiment, the processor (240) can measure blood pressure based on various information acquired through the sensor module (210) (e.g., the first sensor (211)). For example, the processor (240) can measure blood pressure based on a PPG signal acquired through the first sensor (211).

[0085] In this regard, referring to FIG. 4, the processor (240) amplifies or filters the signal of the first sensor (211) to obtain (410) a plurality of PPG signals (e.g., waveforms of PPG signals) (P1 to P7) from which noise has been removed, and extracts (420) a plurality of PPG signals (421) that satisfy a specified condition from among the obtained plurality of PPG signals (P1 to P7) to use for blood pressure measurement.

[0086] According to one embodiment, a plurality of PPG signals (421) satisfying a specified condition may be signals having a peak greater than or equal to a threshold value (424), and the processor (240) may overlap (430) the extracted plurality of PPG signals (421) and use feature points extracted from the overlapped PPG signals for blood pressure measurement. For example, the processor (240) may measure blood pressure based on a comparison result between feature points extracted from the overlapped PPG signals and stored reference feature points.

[0087] For example, a PPG signal may be composed of a superposition of a traveling wave that originates and propagates in the heart and a reflected wave that returns from an extremity. Such a PPG signal in which the traveling wave and the reflected wave are superimposed may reflect the state of the cardiovascular system or blood pressure, etc. In this regard, the processor (240) may apply an ensemble average to the PPG signal to extract various feature points and use the extracted feature points for blood pressure measurement. For example, the processor (240) may estimate measurement parameters related to blood pressure measurement, such as cardiac output and / or total peripheral resistance (TPR), based on various feature points, and may measure at least one of systolic blood pressure and diastolic blood pressure based on the extracted feature points.

[0088] However, the above-described blood pressure measurement method is only one embodiment, and various known technologies related to blood pressure measurement may be considered as various embodiments described in this document.

[0089] As described above, the processor (240) according to various embodiments may acquire (410) a PPG signal as part of a blood pressure measurement operation. However, motion artifacts (e.g., movement of the subject or movement of the first sensor (211)) occurring in the process of acquiring the PPG signal may cause a deterioration in the quality of the PPG signal.

[0090] According to various embodiments, the processor (240) can improve the reliability of blood pressure measurement by guiding appropriate actions that can eliminate motion artifacts. This will be described in detail with reference to FIGS. 5 and 6 below.

[0091]

[0092] Fig. 5 is a diagram illustrating the quality of a PPG signal according to motion artifacts. Furthermore, Fig. 6 is a diagram illustrating a guide for removing motion artifacts according to various embodiments.

[0093] Referring to FIG. 5, when no motion artifact occurs in a situation in which a PPG signal is acquired (e.g., when the subject takes a posture suitable for measurement or the electronic device (200) is worn normally), as illustrated in 510 of FIG. 5, a PPG signal having a certain level of quality (e.g., easy extraction of meaningful feature points (and / or easy estimation of measurement parameters)) can be acquired. For example, a PPG signal having a peak greater than a threshold value (501) and a similarity between periodic signals (502) greater than a certain level can be acquired.

[0094] In addition, when motion artifacts occur in a situation where a PPG signal is acquired (e.g., when the subject does not take a posture suitable for measurement or the electronic device (200) is worn abnormally), a PPG signal whose quality is degraded by the motion artifacts (e.g., when meaningful feature points cannot be extracted (and / or measurement parameters cannot be estimated)) may be acquired, as illustrated in 520 of FIG. 5. For example, a PPG signal having a peak greater than a threshold value (501) but having a similarity between periodic signals (502) below a certain level may be acquired.

[0095] In this regard, the processor (240) according to various embodiments can identify a situation in which motion artifacts are generated based on various information acquired through the sensor module (210) (e.g., the second sensor (212)). For example, the processor (240) can determine that a situation in which motion artifacts are generated is a situation in which the movement of the electronic device (200) is above a certain level or a movement in a specified pattern is detected. For example, the processor (240) can identify a situation in which motion artifacts are generated by comparing information acquired from the second sensor (212) with stored reference information.

[0096] According to one embodiment, in a situation where no motion artifact occurs, the processor (240) can measure blood pressure with relatively high reliability and provide the measured blood pressure as a measurement result. For example, the processor (240) can provide systolic blood pressure (e.g., 120 mmHg) and diastolic blood pressure (e.g., 80 mmHg) as visual information, as shown in 610 of FIG. 6 . However, this is merely an example, and various embodiments are not limited thereto. For example, the measurement result can be provided in various forms, such as auditory information or tactile information.

[0097] According to one embodiment, in a situation where motion artifacts occur, the processor (240) may guide an appropriate action to remove motion artifacts from the PPG signal in the current measurement situation. According to the embodiment, at least one of text information and image information that guides the user's posture to a predetermined blood pressure measurement posture (and / or the position of the measurement device (e.g., the first sensor (211)) to a predetermined measurement position) may be provided as a guide.

[0098] For example, the processor (240) may provide a guide (e.g., “Wear the electronic device on your wrist”) to induce normal wearing of the electronic device (200), as in 620 of FIG. 6. Additionally or optionally, the processor (240) may also provide a guide (e.g., “Do not move during measurement”) to induce a posture suitable for measurement.

[0099] As described above, the processor (240) can enhance the reliability of blood pressure measurement by guiding appropriate actions to remove motion artifacts. However, the quality of the PPG signal can be degraded by various factors other than motion artifacts. Accordingly, the processor (240) according to various embodiments can identify factors that degrade the quality of the PPG signal and guide appropriate actions corresponding to the identified results. This will be described in detail with reference to FIGS. 7 to 9 below.

[0100]

[0101] FIG. 7 is a diagram illustrating a PPG signal whose quality has been degraded by various factors other than noise. FIG. 8 and FIG. 9 are diagrams illustrating a guide for improving the quality of a PPG signal according to various embodiments.

[0102] As mentioned above, PPG signals can be composed of a superposition of traveling waves originating and propagating from the heart and reflected waves returning from the extremities. Furthermore, human blood vessels contract and expand in response to changes in the surrounding temperature. For example, in cold environments, blood vessels constrict to minimize heat loss through the blood vessels, which can hinder the acquisition of high-quality PPG signals.

[0103] For example, in a situation where a PPG signal is acquired, if the temperature of the subject is lowered below a certain temperature, a PPG signal with degraded quality (e.g., in which meaningful feature points cannot be extracted) may be acquired even if no motion artifact occurs (e.g., in the case where the subject takes a posture suitable for measurement or the electronic device (200) is worn normally). For example, as illustrated in 710 of FIG. 7, a PPG signal having a peak whose similarity between periodic signals (502) is above a certain level or below a threshold value (501) may be acquired.

[0104] According to various embodiments, the processor (240) may identify factors that degrade the quality of the PPG signal based on various information acquired through the sensor module (210) (e.g., the third sensor (213)) and guide appropriate actions corresponding to the identified results. For example, the processor (240) may identify the temperature of the target part below a certain temperature as a factor that degrades the quality of the PPG signal.

[0105] According to one embodiment, when the temperature of the test portion below a certain temperature is detected, the processor (240) may guide an action to increase the temperature of the test portion (e.g., rub the test portion to increase the temperature), as shown in 810 of FIG. 8. Additionally or alternatively, the processor (240) may output information (811) related to the measured temperature of the test portion (e.g., the current temperature of the test portion or the temperature that must be increased to obtain a good quality PPG signal) along with the guide.

[0106] According to one embodiment, when the temperature of the test part above a certain temperature is detected, the processor (240) may determine whether motion artifact has occurred in the situation of acquiring a PPG signal and provide guidance corresponding to the determination result. For example, the processor (240) may obtain information related to the posture and / or wearing state of the electronic device (200) through the sensor module (210) (e.g., the second sensor (212)) in the situation of acquiring a PPG signal, and may determine whether motion artifact has occurred based on the information.

[0107] According to one embodiment, when no motion artifact occurs in a situation where a PPG signal is acquired, the processor (240) can measure blood pressure with relatively high reliability. Accordingly, the processor (240) can provide the measured blood pressure as a measurement result. For example, the processor (240) can provide systolic pressure (e.g., 120 mmHg) and diastolic pressure (e.g., 80 mmHg) as visual information, as shown in 820 of FIG. 8. Additionally or optionally, the processor (240) can also provide information (821) related to the current temperature of the test portion together with the measurement result.

[0108] According to one embodiment, when motion artifacts occur while acquiring a PPG signal, the processor (240) may not be able to measure blood pressure with relatively high reliability. Accordingly, the processor (240) may guide appropriate actions to remove motion artifacts from the PPG signal in the current measurement situation. For example, the processor (240) may provide a guide (e.g., "Wear the electronic device on your wrist") to induce normal wearing of the electronic device (200), as shown in 830 of FIG. 8. Additionally or alternatively, the processor (240) may also provide information related to the current temperature of the subject along with the guide.

[0109] Additionally or optionally, the processor (240) according to various embodiments may provide various guidance based on the temperature of the target.

[0110] In one embodiment, blood vessels that have contracted beyond a certain level due to the ambient temperature may not easily dilate even when the user performs a guided action (e.g., rubbing the test area). In such cases, normal blood pressure measurement may be difficult.

[0111] In this regard, the processor (240) according to various embodiments may guide a situation in which normal blood pressure measurement is impossible when the temperature of the test portion is below a threshold temperature. For example, as illustrated in 910 of FIG. 9, a situation in which normal blood pressure measurement is difficult in the current state may be guided (e.g., "Please try measurement again later"). Depending on the embodiment, the processor (240) may also output information (911) related to the measured temperature of the test portion along with the guidance.

[0112] Additionally or optionally, the processor (240) according to various embodiments may provide various guidance based on temperature changes of the subject.

[0113] According to one embodiment, a blood vessel that has contracted above a certain level due to the temperature of the surrounding environment may be dilated to a certain level by a guided action. In other words, the temperature of the test portion that is below a certain level may be increased to a certain level. In this regard, the processor (240) according to various embodiments may guide a situation in which normal blood pressure measurement is possible when a change in the temperature of the test portion that satisfies a specified condition is detected. For example, as illustrated in 920 of FIG. 9, a situation in which normal blood pressure measurement is possible in the current state may be guided (e.g., a temperature at which blood pressure measurement is possible has been detected). According to an embodiment, the processor (240) may also output information (921) related to the measured temperature of the test portion along with the guide.

[0114] Additionally or optionally, the processor (240) according to various embodiments may guide the blood pressure correction time based on the temperature of the subject.

[0115] According to one embodiment, the processor (240) may utilize a method of indirectly estimating blood pressure rather than a method of directly measuring actual coronary artery blood pressure when measuring blood pressure. Accordingly, in order to accurately measure blood pressure, an operation (e.g., calibration) of correcting the blood pressure estimated from the PPG signal to the actual blood pressure (e.g., blood pressure measured by a cuff blood pressure monitor) needs to be performed at a specified interval (e.g., monthly intervals).

[0116] In this regard, the processor (240) according to various embodiments can guide the blood pressure correction time based on the physical change information of the subject.

[0117] According to one embodiment, the processor (240) may perform a correction operation at a specified correction cycle when the temperature change of the test portion is above a certain level for a specified period of time (e.g., 20 days).

[0118] According to one embodiment, the processor (240) may guide whether the blood pressure correction timing can be adjusted if the temperature change of the test portion is below a certain level for a specified period of time (e.g., 20 days). For example, as illustrated in 930 of FIG. 9, a situation in which the temperature change of the test portion is not significant and thus the blood pressure correction timing can be extended may be guided. In this regard, the processor (240) may provide a menu (931) configured to generate a command for extending the blood pressure correction, and when an input thereto is detected, the blood pressure correction timing can be adjusted based on a specified correction cycle.

[0119] As described above, the processor (240) can improve the reliability of blood pressure measurement by providing guidance. According to various embodiments, the processor (240) can also improve the reliability of blood pressure measurement by correcting measurement parameters used for blood pressure measurement (e.g., total vascular resistance (TPR) (and / or cardiac output)) based on the temperature of the subject. This will be described in detail with reference to FIGS. 10A and 10B below.

[0120]

[0121] FIG. 10a and FIG. 10b are drawings for explaining the blood pressure measurement operation of an electronic device (200) according to various embodiments.

[0122] As described above, the processor (240) according to various embodiments may estimate a measurement parameter related to blood pressure measurement (e.g., total vascular resistance (TPR) (and / or cardiac output)) based on feature points extracted from a PPG signal when measuring blood pressure, and measure at least one of systolic blood pressure and diastolic blood pressure based on the TPR.

[0123] In addition, blood vessels may constrict depending on changes in the temperature of the surrounding environment, which may also change the total vascular resistance, which is a measurement parameter measured in the test portion. For example, as blood vessels constrict, the total vascular resistance measured in the test portion increases, and as blood vessels expand, the total vascular resistance measured in the test portion decreases. In this way, the total vascular resistance changed by blood vessel constriction and expansion may reduce the reliability of blood pressure measurement. The total vascular resistance changed due to the aforementioned blood vessel constriction and the total vascular resistance corrected based on the amount of temperature change in the test portion described below are examples of measurement parameters, and various embodiments are not limited thereto.

[0124] In this regard, the processor (240) according to various embodiments can correct the total vascular resistance measured in the test portion based on the amount of temperature change in the test portion.

[0125] The processor (240) according to various embodiments may determine whether to correct for total vascular resistance based on the comparison result between the first temperature of the subject stored at the time of blood pressure correction and the second temperature of the subject measured at the time of PPG signal acquisition.

[0126] According to one embodiment, as illustrated in 1010 of FIG. 10A, the first total vascular resistance may be reduced (1000) below a certain level by the constricted blood vessel. In this regard, the processor (240) may generate a second measured total vascular resistance (1021) that increases at least a portion of the first total vascular resistance (1001) to a certain level, as illustrated in 1020 of FIG. 10A.

[0127] According to one embodiment, as illustrated in 1040 of FIG. 10b, the third total vascular resistance (1003) may be increased (1030) to a certain level or higher by the dilated blood vessel. In this regard, the processor (240) may generate a fourth measured total vascular resistance (1051) that reduces the third total vascular resistance (1003) to a certain level, as illustrated in 1050 of FIG. 10b.

[0128] As described above, the processor (240) according to various embodiments can obtain more reliable measurement results by measuring blood pressure based on the corrected total vascular resistance.

[0129] As described above, the electronic device (200) according to various embodiments may include one processor (240). In this case, the processor (240) may execute instructions stored in the memory (230) to perform functions (e.g., operations) of the electronic device (200).

[0130] However, this is merely an example, and various embodiments are not limited thereto. For example, an electronic device (200) according to various embodiments may include a plurality of processors (240). In this case, some of the plurality of processors (240) may execute instructions stored in the memory (230) to perform some functions of the electronic device (200), and other some of the plurality of processors (240) may execute instructions stored in the memory (230) to perform other functions of the electronic device (200).

[0131] Depending on the embodiment, the electronic device (200) according to various embodiments may include a plurality of memories (230). In this case, instructions for performing some functions of the electronic device (200) may be stored in some of the plurality of memories (230), and instructions for performing other functions of the electronic device (200) may be stored in other of the plurality of memories (230).

[0132]

[0133] Figure 11 is a flowchart illustrating the operation of an electronic device (200) according to various embodiments. While the operations in the following embodiments may be performed sequentially, they are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. Furthermore, at least one of the aforementioned operations may be omitted depending on the embodiment.

[0134] Referring to FIG. 11, an electronic device (200) (e.g., a processor (240)) according to various embodiments may collect (e.g., obtain) first information through a first sensor (211) in operation 1110. According to one embodiment, the electronic device (200) may obtain a PPG signal for a subject (e.g., a wrist).

[0135] According to various embodiments, the electronic device (200) (e.g., the processor (240)) may determine whether first information having a specified quality is acquired in operation 1120. The first information having the specified quality may be a portion of a plurality of PPG signals (e.g., waveforms of the PPG signals) (P1 to P7) acquired, as described with reference to 410 of FIG. 4. According to one embodiment, the electronic device (200) may determine whether a PPG signal having a peak greater than a threshold value and a similarity between periodic signals greater than a certain level is collected through the first sensor (211).

[0136] According to various embodiments, when first information having a specified quality is acquired, the electronic device (200) (e.g., processor (240)) may, in operation 1130, provide a guide associated with a blood pressure measurement situation. Additionally or optionally, the electronic device (200) may perform a blood pressure measurement operation after providing the guide.

[0137] According to various embodiments, when first information below a specified quality is acquired, the electronic device (200) (e.g., processor (240)) may, in operation 1140, determine a measurement posture related to the subject based on second information collected through the second sensor (212). According to one embodiment, the electronic device (200) may determine a measurement posture related to the subject by comparing the information acquired from the second sensor (212) with stored reference information.

[0138] According to various embodiments, the electronic device (200) (e.g., processor (240)) may measure the temperature of the subject based on third information collected through the third sensor (213) in operation 1150. The subject may be a part of the body (e.g., a wrist) that is in close contact with (e.g., in contact with) the first sensor (211) while the electronic device (200) is worn on the body. According to one embodiment, the electronic device (200) may measure the temperature of a specific part of the body (e.g., the subject) rather than body temperature.

[0139] According to various embodiments, the electronic device (200) (e.g., the processor (240)) may, in operation 1160, provide a guide for inducing a measurable situation based on the measurement posture and the temperature of the subject. According to one embodiment, the electronic device (200) may provide at least one of text information and image information for inducing the user's posture to a predetermined blood pressure measurement posture (and / or the position of the measurement device (e.g., the first sensor (211)) to a predetermined measurement position) as a guide. For example, the electronic device (200) may provide at least some of the guides described through FIGS. 6, 8, and 9.

[0140]

[0141] Figure 12 is a flowchart illustrating a guide provision operation of an electronic device (200) according to various embodiments. While the operations in the following embodiments may be performed sequentially, they are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. Furthermore, at least one of the aforementioned operations may be omitted depending on the embodiment.

[0142] Referring to FIG. 12, an electronic device (200) (e.g., a processor (240)) according to various embodiments may determine, in operation 1210, whether the second information corresponds to a posture that satisfies a specified condition. According to one embodiment, the electronic device (200) may determine whether the posture of the electronic device (200) and / or the posture of the subject maintains a measurement posture suitable for blood pressure measurement.

[0143] According to various embodiments, if the second information does not satisfy a specified condition (e.g., if the posture of the electronic device (200) and / or the subject maintains a measurement posture that is not suitable for blood pressure measurement), the electronic device (200) (e.g., the processor (240)) may output a first guide related to the measurement posture in operation 1220. According to one embodiment, the electronic device (200) may provide a guide that guides the posture of the electronic device (200) and / or the posture of the subject to a predetermined blood pressure measurement posture. For example, the first guide may include the guides illustrated in 620 of FIG. 6 and 830 of FIG. 8.

[0144] According to various embodiments, when the second information satisfies a specified condition (e.g., when the posture of the electronic device (200) and / or the subject maintains a measurement posture suitable for blood pressure measurement), the electronic device (200) (e.g., the processor (240)) may determine, in operation 1230, whether the third information corresponds to a temperature that satisfies the specified condition. According to one embodiment, the electronic device (200) may determine whether the temperature of the subject is a temperature suitable for blood pressure measurement.

[0145] According to various embodiments, when the third information corresponds to a temperature that does not satisfy a specified condition (e.g., when the temperature of the test portion is not suitable for blood pressure measurement), the electronic device (200) (e.g., the processor (240)) may output a second guide related to the temperature of the test portion in operation 1240. According to one embodiment, the electronic device (200) may guide an action to increase the temperature of the test portion (e.g., rub the test portion to increase the temperature). For example, the second guide may include the guide illustrated in 810 of FIG. 8.

[0146] According to various embodiments, when the third information corresponds to a temperature that satisfies a specified condition (e.g., when the temperature of the test portion is a temperature suitable for blood pressure measurement), the electronic device (200) (e.g., the processor (240)) may output a specified third guide in operation 1250. According to one embodiment, the electronic device (200) may provide a blood pressure correction point as the third guide. For example, the third guide may include the guide illustrated in 930 of FIG. 9.

[0147]

[0148] Figure 13 is a flowchart illustrating the operation of an electronic device (200) according to various embodiments. While the operations in the following embodiments may be performed sequentially, they are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. Furthermore, at least one of the aforementioned operations may be omitted depending on the embodiment.

[0149] Referring to FIG. 13, an electronic device (200) (e.g., a processor (240)) according to various embodiments may collect (e.g., obtain) first information through a first sensor (211) in operation 1310. According to one embodiment, the electronic device (200) may obtain a PPG signal for a subject (e.g., a wrist).

[0150] According to various embodiments, the electronic device (200) (e.g., processor (240)) may, in operation 1320, estimate measurement parameters based on which blood pressure is calculated from the first information. According to one embodiment, the electronic device (200) may estimate measurement parameters such as cardiac output and / or total peripheral resistance (TPR) based on feature points extracted from the PPG signal.

[0151] According to various embodiments, the electronic device (200) (e.g., processor (240)) may, in operation 1330, determine the temperature of the subject. According to one embodiment, the electronic device (200) may measure the temperature of the subject based on third information collected through the third sensor (213). For example, the electronic device (200) may measure the temperature of a specific part of the body (e.g., the subject) rather than body temperature.

[0152] According to various embodiments, the electronic device (200) (e.g., processor (240)) may determine, in operation 1340, whether the reference temperature and the temperature of the subject have a difference of a certain level or more. The reference temperature may be the temperature of the subject stored at the time of blood pressure correction.

[0153] According to various embodiments, when the difference between the reference temperature and the temperature of the tested portion is greater than a certain level (e.g., when the temperature of the tested portion is a temperature that causes blood vessels to contract to a certain level or greater), the electronic device (200) (e.g., the processor (240)) may, in operation 1350, correct the measurement parameter based on the temperature of the tested portion. According to one embodiment, at least a portion of the measurement parameter may be increased to a certain level. For example, the operation of correcting the measurement parameter may refer to the description related to FIGS. 10A and 10B.

[0154] According to various embodiments, when the reference temperature and the temperature of the test portion have a difference of a certain level or more (e.g., when the temperature of the test portion is a temperature that causes blood vessels to contract to a certain level or more), the electronic device (200) (e.g., processor (240)) may measure blood pressure based on the corrected measurement parameter in operation 1360.

[0155] According to various embodiments, when the reference temperature and the temperature of the test portion do not have a difference of more than a certain level (e.g., when the temperature of the test portion is not a temperature that would constrict blood vessels more than a certain level), the electronic device (200) (e.g., the processor (240)) may measure blood pressure based on the measurement parameter extracted from the first information in operation 1370.

[0156]

[0157] Figure 14 is a flowchart illustrating the operation of an electronic device (200) according to various embodiments. While the operations in the following embodiments may be performed sequentially, they are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. Furthermore, at least one of the aforementioned operations may be omitted depending on the embodiment.

[0158] Referring to FIG. 14, an electronic device (200) (e.g., a processor (240)) according to various embodiments may detect a blood pressure measurement event at operation 1410. The blood pressure measurement event may be related to the execution of a function that causes an operation of a first sensor.

[0159] According to various embodiments, the electronic device (200) (e.g., processor (240)) may collect (e.g., obtain) first information through the first sensor (211) in operation 1420. According to one embodiment, the electronic device (200) may obtain a PPG signal for a subject (e.g., wrist).

[0160] According to various embodiments, the electronic device (200) (e.g., the processor (240)) may determine whether first information having a specified quality is acquired in operation 1430. The first information having the specified quality may be a portion of a plurality of PPG signals (e.g., waveforms of the PPG signals) (P1 to P7) acquired, as described with reference to 410 of FIG. 4. According to one embodiment, the electronic device (200) may determine whether a PPG signal having a peak greater than a threshold value and a similarity between periodic signals greater than a certain level is collected through the first sensor (211).

[0161] According to various embodiments, when first information having a specified quality is acquired, the electronic device (200) (e.g., processor (240)) may, in operation 1440, correct a measurement parameter estimated based on the first information based on the temperature of the test portion, and measure blood pressure based on the corrected measurement parameter. According to one embodiment, operation 1440 may include at least one of operations 1310 to 1370 of FIG. 13 described above.

[0162] According to various embodiments, when first information that does not have a specified quality is acquired, the electronic device (200) (e.g., processor (240)) may, in operation 1450, measure the posture of the subject and the temperature of the subject based on the second sensor (212) and the third sensor (213).

[0163] According to various embodiments, the electronic device (200) (e.g., the processor (240)) may, in operation 1460, provide a guide related to blood pressure measurement based on the posture of the subject and the temperature of the subject. According to one embodiment, operations 1450 and 1460 may include at least one of operations 1110 to 1160 of FIG. 11 and operations 1210 to 1260 of FIG. 12 described above.

[0164]

[0165] An electronic device (200) according to various embodiments includes a first sensor (211) configured to collect first information related to biometric information by using a part of a subject as a measuring area, a second sensor (212) configured to collect second information related to a posture of the electronic device, a third sensor (213) configured to collect third information related to temperature with respect to the measuring area, at least one processor (240), and a memory (230), and the memory (230) may include at least one instruction.

[0166] According to one embodiment, the at least one instruction, when executed by the at least one processor (240), may store instructions that cause the electronic device (200) to measure a signal quality for the first information, and if the signal quality is below a specified level: obtain a first result indicating whether a posture of the electronic device (200) corresponds to a specified reference posture based on the second information, obtain a second result indicating whether a temperature of the tested part corresponds to a specified reference temperature based on the third information, and selectively provide a first guide related to the posture of the electronic device (200) or a second guide related to the temperature of the tested part based on the first result and the second result.

[0167] According to various embodiments, the second sensor (212) may further include a sensor configured to collect information related to a wearing state of the electronic device (200). According to one embodiment, the instructions may cause the electronic device (200) to: obtain a first additional result indicating whether a wearing state of the electronic device (200) corresponds to a specified wearing state based on the second information, and selectively provide the first guide, the second guide, or the first additional guide related to wearing of the electronic device (200) based on the first result, the second result, and the first additional result.

[0168] According to various embodiments, the second sensor (212) may further include a sensor configured to collect information related to movement of the electronic device (200). According to one embodiment, the instructions may cause the electronic device (200) to: obtain a second additional result indicating whether a movement of the electronic device (200) corresponds to a specified movement based on the second information; and selectively provide the first guide, the second guide, or the second additional guide related to the movement of the electronic device (200) based on the first result, the second result, and the second additional result.

[0169] According to various embodiments, the instructions may cause the electronic device (200) to: provide a first guide related to wearing the electronic device (200) when the posture of the electronic device (200) does not correspond to the specified reference posture and the temperature of the test portion corresponds to the specified reference temperature, and provide a second guide related to the temperature of the test portion, and then provide another guide related to blood pressure measurement when the temperature of the test portion corresponding to the specified reference temperature is confirmed.

[0170] According to various embodiments, the instructions may cause the electronic device (200) to: provide the temperature of the detection portion together with the second guide.

[0171] According to various embodiments, the instructions may cause the electronic device (200) to: estimate a first measurement parameter related to blood pressure measurement based on the first information, and measure blood pressure based on the first measurement parameter, if the signal quality is above a specified level.

[0172] According to various embodiments, the instructions may cause the electronic device (200) to: obtain a second measurement parameter that corrects the first measurement parameter based on the temperature of the test portion, and measure the blood pressure based on the second measurement parameter.

[0173] According to various embodiments, the first measurement parameter may include at least one of cardiac output and total peripheral resistance (TPR).

[0174] According to various embodiments, the electronic device (200) may include a display (220). According to one embodiment, the instructions may cause the electronic device (200) to provide a visual guide through the display (220).

[0175] An electronic device (200) according to various embodiments includes a biometric sensor (211) configured to collect biometric information by using a part of a subject as a measuring area, a temperature sensor (213) configured to collect temperature information about the measuring area, at least one processor (240), and a memory (230), and the memory (230) may include at least one instruction.

[0176] According to one embodiment, the at least one instruction, when executed by the at least one processor (240), may cause the electronic device (200) to estimate a first measurement parameter related to blood pressure measurement based on the biometric information, measure a first temperature for the test portion based on the temperature information, obtain a second measurement parameter that corrects the first measurement parameter based on the first temperature and a second temperature stored in the electronic device, and measure blood pressure based on the second measurement parameter.

[0177] According to various embodiments, the first measurement parameter may include at least one of cardiac output and total peripheral resistance (TPR).

[0178] According to various embodiments, an operating method of an electronic device (200) may include an operation of collecting first information related to biometric information by using a part of a subject as a measuring area, an operation of measuring a signal quality for the first information, an operation of obtaining second information related to a posture of the electronic device and third information related to a temperature of the subject when the signal quality is below a specified level, an operation of obtaining a first result indicating whether the posture of the electronic device (200) corresponds to a specified reference posture based on the second information, an operation of obtaining a second result indicating whether the temperature of the subject corresponds to a specified reference temperature based on the third information, and an operation of selectively providing a first guide related to the posture of the electronic device (200) or a second guide related to the temperature of the subject based on the first result and the second result.

[0179] According to various embodiments, the operating method of the electronic device (200) may include an operation of providing a first guide related to the posture of the electronic device (200) when the posture of the electronic device (200) does not correspond to the specified reference posture and the temperature of the detection part corresponds to the specified reference temperature.

[0180] According to various embodiments, the operating method of the electronic device (200) may include an operation of providing a second guide related to the temperature of the detected portion when the posture of the electronic device (200) corresponds to the specified reference posture and the temperature of the detected portion does not correspond to the specified reference temperature.

[0181] According to various embodiments, the operating method of the electronic device (200) may include an operation of providing a second guide related to the temperature of the test portion, and then, when the temperature of the test portion corresponding to the designated reference temperature is confirmed, providing another guide related to blood pressure measurement.

[0182] According to various embodiments, the method of operating the electronic device (200) may include an operation of providing the temperature of the detection portion together with the second guide.

[0183] According to various embodiments, the operating method of the electronic device (200) may include an operation of estimating a first measurement parameter related to blood pressure measurement based on the first information when the signal quality is above a specified level, an operation of obtaining a second measurement parameter by correcting the first measurement parameter based on a temperature of the test portion, and an operation of measuring blood pressure based on the second measurement parameter.

[0184] According to various embodiments, the first measurement parameter may include at least one of cardiac output and total peripheral resistance (TPR).

[0185] According to various embodiments, the method of operating the electronic device (200) may include an operation of collecting information related to at least one of a wearing state of the electronic device (200) and a movement of the electronic device (200) as at least a part of the second information, an operation of obtaining at least one of a first additional result indicating whether the wearing state of the electronic device (200) corresponds to a specified wearing state and a second additional result indicating whether the movement of the electronic device (200) corresponds to a specified movement based on the second information, and an operation of selectively providing the first guide, the second guide, the first additional guide related to the wearing of the electronic device (200) or the second additional guide related to the movement of the electronic device (200) based on the first result, the second result, the first additional result and the second additional result.

[0186] According to various embodiments, a computer-readable recording medium may store at least one instruction for collecting first information related to biometric information by using a part of a subject as a measuring area, measuring a signal quality for the first information, and if the signal quality is below a specified level: obtaining second information related to a posture of the electronic device and third information related to a temperature of the measured portion, obtaining a first result indicating whether the posture of the electronic device (200) corresponds to a specified reference posture based on the second information, obtaining a second result indicating whether the temperature of the measured portion corresponds to a specified reference temperature based on the third information, and selectively providing a first guide related to the posture of the electronic device (200) or a second guide related to the temperature of the measured portion based on the first result and the second result.

[0187]

[0188] The electronic device (101) according to various embodiments disclosed in this document may be a device of various forms. The electronic device (101) may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device (101) according to the embodiments of this document is not limited to the aforementioned devices.

[0189] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0190] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0191] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more commands stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one command among the one or more commands stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one command called. The one or more commands may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0192] According to one embodiment, the method according to the various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0193] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and arranged in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an electronic device (200), A first sensor (211) configured to collect first information related to biometric information by using a part of a subject as a measuring area; A second sensor (212) configured to collect second information related to the posture of the electronic device (200); A third sensor (213) configured to collect third information related to temperature with respect to the above-mentioned test section; at least one processor (240); and Contains memory (230), The above memory (230) includes at least one instruction, and when the at least one instruction is executed by the at least one processor (240), the electronic device (200), Measure the signal quality for the above first information, If the above signal quality is below the specified level: Based on the second information, a first result is obtained indicating whether the posture of the electronic device (200) corresponds to a specified reference posture, Based on the third information, a second result is obtained indicating whether the temperature of the test section corresponds to a specified reference temperature, An electronic device storing instructions to selectively provide a first guide related to the posture of the electronic device (200) or a second guide related to the temperature of the target portion based on the first result and the second result.

2. In paragraph 1, The second sensor (212) further includes a sensor configured to collect information related to the wearing state of the electronic device (200). The above instructions cause the electronic device (200) to: Based on the second information, a first additional result is obtained indicating whether the wearing state of the electronic device (200) corresponds to a specified wearing state, An electronic device that selectively provides, based on the first result, the second result and the first additional result, the first guide, the second guide or the first additional guide related to wearing of the electronic device (200).

3. In paragraph 1, The second sensor (212) further includes a sensor configured to collect information related to the movement of the electronic device (200), The above instructions cause the electronic device (200) to: Based on the second information, a second additional result is obtained indicating whether the movement of the electronic device (200) corresponds to a specified movement, An electronic device that selectively provides, based on the first result, the second result and the second additional result, the first guide, the second guide or the second additional guide related to the movement of the electronic device (200).

4. In paragraph 1, The above instructions cause the electronic device (200) to: If the posture of the electronic device (200) does not correspond to the specified reference posture and the temperature of the subject corresponds to the specified reference temperature, a first guide related to wearing the electronic device (200) is provided, An electronic device that provides a second guide related to the temperature of the tested portion when the posture of the electronic device (200) corresponds to the specified reference posture and the temperature of the tested portion does not correspond to the specified reference temperature.

5. In paragraph 1, The above instructions cause the electronic device (200) to: An electronic device that provides a third guide related to blood pressure measurement after providing a second guide related to the temperature of the above-mentioned test portion and confirming that the temperature of the test portion corresponding to the above-mentioned designated reference temperature is present.

6. In paragraph 1, The above instructions cause the electronic device (200) to: An electronic device that provides the temperature of the above-mentioned test section together with the second guide.

7. In paragraph 1, The above instructions cause the electronic device (200) to: Based on the first information, a first measurement parameter related to blood pressure measurement is estimated, An electronic device for measuring blood pressure based on the first measurement parameter.

8. In paragraph 7, The above instructions cause the electronic device (200) to: Obtaining a second measurement parameter by correcting the first measurement parameter based on the temperature of the test portion, An electronic device for measuring blood pressure based on the second measurement parameter.

9. In at least one of paragraphs 7 and 8, An electronic device wherein the first measurement parameter comprises at least one of cardiac output and total peripheral resistance (TPR).

10. In paragraph 1, Includes a display (220), The above instructions cause the electronic device (200) to: An electronic device that provides visual guidance through the above display (220).

11. In an electronic device (200), A biometric sensor (211) configured to collect biometric information by using a part of a subject as a measuring area; A temperature sensor (213) configured to collect temperature information about the above-mentioned test section; and at least one processor (240); and Contains memory (230), The above memory (230) includes at least one instruction, and when the at least one instruction is executed by the at least one processor (240), the electronic device (200), Estimating a first measurement parameter related to blood pressure measurement based on the above biometric information, Based on the above temperature information, the first temperature of the test section is measured, Based on the first temperature and the second temperature stored in the electronic device (200), a second measurement parameter is obtained by correcting the first measurement parameter, An electronic device for measuring blood pressure based on the second measurement parameter.

12. In paragraph 11, An electronic device wherein the first measurement parameter comprises at least one of cardiac output and total peripheral resistance (TPR).

13. In the operating method of an electronic device (200), An action of collecting first information related to biometric information by using a part of a subject as a measuring area; An operation of measuring signal quality for the first information; If the above signal quality is below the specified level: An operation of obtaining second information related to the posture of the electronic device and third information related to the temperature of the subject; An operation of obtaining a first result indicating whether the posture of the electronic device (200) corresponds to a specified reference posture based on the second information; An operation of obtaining a second result indicating whether the temperature of the test portion corresponds to a specified reference temperature based on the third information; and A method including an operation of selectively providing a first guide related to the posture of the electronic device (200) or a second guide related to the temperature of the target portion based on the first result and the second result.

14. In paragraph 13, If the posture of the electronic device (200) does not correspond to the specified reference posture and the temperature of the subject corresponds to the specified reference temperature, an operation of providing a first guide related to the posture of the electronic device (200); A method including an operation of providing a second guide related to the temperature of the tested part when the posture of the electronic device (200) corresponds to the specified reference posture and the temperature of the tested part does not correspond to the specified reference temperature.

15. In paragraph 13, A method including an action of providing a third guide related to blood pressure measurement after providing a second guide related to the temperature of the above-mentioned test portion and confirming that the temperature of the test portion corresponding to the above-mentioned designated reference temperature is present.

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