KR20230024189A - Electronic device adjusting oxygen saturation and method for controlling the same - Google Patents

Abstract

The present invention relates to an electronic device for correcting oxygen saturation to acquire an accurate oxygen saturation value during sleep and a control method thereof. According to one embodiment of the present invention, the electronic device comprises: a first sensor for detecting movement; a second sensor for measuring oxygen saturation; a memory; and at least one processor operatively coupled with the first sensor, the second sensor, and the memory. The at least one processor checks whether a posture maintenance period before motion detection is longer than a set period when a movement exceeding the set value is detected through the first sensor, acquires a reference oxygen saturation value stored in the memory when the posture maintenance period before motion detection is longer than the set period, and corrects the oxygen saturation value acquired through the second sensor during the posture maintenance period before motion detection on the basis of the reference oxygen saturation value.

Description

Electronic device for correcting oxygen saturation and its control method { ELECTRONIC DEVICE ADJUSTING OXYGEN SATURATION AND METHOD FOR CONTROLLING THE SAME }

Embodiments of the present disclosure relate to an electronic device for correcting oxygen saturation and a control method thereof.

As users' interest in health increases, technology for measuring bio-signals through electronic devices carried by users is developing.

For example, electrocardiogram, blood pressure, pulse rate, respiratory rate, body temperature, and oxygen saturation can be measured through sensors included in electronic devices.

Pulse oximetry is a useful method to measure oxygen saturation noninvasively, using the ratio of absorbance of arterial blood whose blood flow is temporarily increased by cardiac ejection at two wavelengths (RED, Infrared). Oxygen saturation can be measured.

Pulse oximetry is being installed in electronic devices (eg, wearable devices) that come into contact with the user's body due to its non-invasive advantage.

Most wearable devices are equipped with a pulse oximetry function, and sensors supporting the pulse oximetry function mounted in the wearable device have a reflective structure.

Unlike transmission-type pulse oximetry, which is a medical device, reflection-type pulse oximetry has a problem in that there are many error factors in measuring oxygen saturation, such as a path difference between (RED and infrared) at two wavelengths and an optical shunt.

In particular, it is necessary to maintain a stable posture for stable oxygen saturation measurement. It is difficult to maintain a stable posture during sleep, and pressure is applied to the measurement area due to tossing and turning during sleep, or the relative position of the heart and the measurement area, the body and the sensor ( Excitation between pulse oximetry measuring sensors (e.g.) can cause an optical short circuit, which can lead to errors in the measured oxygen saturation.

The present disclosure provides an electronic device for correcting oxygen saturation including an error and a method for controlling the same.

According to various embodiments, an electronic device may include a first sensor for detecting motion, a second sensor for measuring oxygen saturation, a memory, and at least one sensor operatively connected to the first sensor, the second sensor, and the memory. and a processor, wherein the at least one processor checks whether a posture maintenance period before motion detection is equal to or longer than a predetermined period when a motion greater than a set value is detected through the first sensor, and the posture maintenance period before motion detection If the period is longer than the set period, an oxygen saturation reference value stored in the memory may be acquired, and an oxygen saturation value acquired through the second sensor during a posture maintenance period before the motion detection may be corrected based on the oxygen saturation reference value. there is.

According to various embodiments of the present disclosure, a control method of an electronic device may include, when a movement equal to or greater than a set value is detected through a first sensor for detecting motion, determining whether a period of maintaining a posture prior to motion detection is greater than or equal to a set period of time, the motion If the posture maintenance period before detection is longer than the set period, the oxygen saturation value obtained through the operation of acquiring the oxygen saturation reference value stored in the memory and the oxygen saturation value obtained through the second sensor for measuring oxygen saturation during the posture maintenance period before the motion detection is described as An operation of correcting based on the oxygen saturation reference value may be included.

According to various embodiments of the present disclosure, an electronic device includes a communication module, a memory, and at least one processor operatively connected to the communication module and the memory, and the at least one processor receives information from an external electronic device through the communication module. When the motion of the external electronic device is determined to be greater than or equal to a set value based on the received sensing value, it is determined whether the posture maintenance period before the motion detection is longer than a set period, and if the posture maintenance period before the motion detection is longer than a set period, An oxygen saturation reference value stored in the memory may be acquired, and an oxygen saturation value received from the external electronic device during a posture maintenance period prior to the motion detection may be corrected based on the oxygen saturation reference value.

In an electronic device according to various embodiments of the present disclosure, when an error occurs in measurement of oxygen saturation due to the electronic device being pressed against the user's body or lifting due to tossing and tossing during sleep, the electronic device corrects the error to a normal range to provide more accurate sleep. Oxygen saturation values can be obtained.

1 is a block diagram of an electronic device in a network environment according to various embodiments.
2 is a diagram for explaining a simple configuration of an electronic device according to various embodiments.
3 is a flowchart illustrating an oxygen saturation correction operation of an electronic device according to various embodiments of the present disclosure.
4 is a diagram for explaining an oxygen saturation correction operation of an electronic device according to various embodiments of the present disclosure.
5 is a flowchart illustrating an oxygen saturation correction operation of an electronic device according to a posture maintenance period according to various embodiments of the present disclosure.
6 is a diagram for explaining a direction of an electronic device according to a sleeping posture according to various embodiments of the present disclosure;
7 is a flowchart illustrating an operation of changing a posture index of an electronic device according to various embodiments.
8 is a diagram for explaining an operation of changing a posture index of an electronic device according to various embodiments.
9 is a diagram for explaining an oxygen saturation correction operation of an electronic device according to time according to various embodiments of the present disclosure;
10A is a diagram for explaining an operation of setting a threshold value for a posture maintenance period of an electronic device according to various embodiments.
10B is a diagram for explaining an operation of setting a threshold for a posture maintenance period of an electronic device according to various embodiments.

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

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

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

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

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

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

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

The display module 160 may visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram 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 set to detect a touch or a pressure sensor set to measure the intensity of force generated by the touch.

The audio module 170 may convert sound into an electrical signal or vice versa. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device connected directly or wirelessly to the electronic device 101 (eg: Sound may be output through the electronic device 102 (eg, a speaker or a headphone).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a bio sensor, It may include a temperature sensor, humidity sensor, or light sensor.

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

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

The haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or motion) or electrical stimuli that a user may perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

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

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

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

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

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

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

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

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

According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of operations executed in the electronic device 101 may be executed in one or more external electronic devices among the external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead of executing the function or service by itself. Alternatively or additionally, one or more external electronic devices may be requested to perform the function or at least part of the service. One or more external electronic devices receiving the request may execute at least a part of the requested function or service or an additional function or service related to the request, and deliver the execution result to the electronic device 101 . The electronic device 101 may provide the result as at least part of a response to the request as it is or additionally processed. To this end, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199 . The electronic device 101 may be applied to intelligent services (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

2 is a diagram for explaining a simple configuration of an electronic device according to various embodiments.

According to various embodiments, referring to FIG. 2 , an electronic device 101 (eg, the electronic device 101 of FIG. 1 ) includes a first sensor 210 (eg, the sensor module 176 of FIG. 1 ), a first sensor 210 (eg, the sensor module 176 of FIG. 1 ), 2 sensor 220 (eg sensor module 176 in FIG. 1 ), memory 130 (eg memory 130 in FIG. 1 ) and processor 120 (eg processor 120 in FIG. 1 ) can include

According to various embodiments, the electronic device 101 may be a wearable device (eg, smart watch, smart band, smart ring, wireless earphone, smart glasses) mounted on the user's body. Hereinafter, for convenience of description, the electronic device 101 is described as a wearable device, but according to various embodiments, the electronic device 101 is a terminal device (eg, a smartphone) that communicates with a wearable device mounted on a user's body. ) or a server.

According to various embodiments, the first sensor 210 may detect movement of the electronic device 101 . According to various embodiments, the first sensor 210 may detect the movement of the electronic device 101 based on at least one of speed, acceleration, angular velocity, angular acceleration, or direction change with respect to gravity of the electronic device 101. . For example, the first sensor 210 may include at least one of an accelerometer, a gyro sensor, or a gravitational acceleration sensor. The first sensor 210 is not limited thereto, and may include various types of sensors capable of detecting a posture (or movement) of a user wearing the electronic device 101 . According to an embodiment, the processor 120 may generate acceleration information (eg, magnitude of three axes (eg, x, y, and z axes)) of an acceleration sensor and/or air pressure according to a change in displacement of the electronic device 101 The posture of the user may be determined based on checking barometric pressure data (eg, barometric pressure gradient and barometric pressure p2p (peak2peak) value) of the sensor. According to various embodiments, the processor 120 may determine the user's posture based on a combination of data obtained from the first sensor 210 and/or the second sensor 220 .

According to various embodiments, the second sensor 220 may contact the user's body to measure oxygen saturation. For example, the second sensor 220 (eg, the sensor module 176 of FIG. 1 ) may include at least one of a PPG sensor and pulse oxymetry.

According to various embodiments, the second sensor 220 includes a light source that emits light of two wavelengths (eg, RED and infrared) and a light receiver that senses light emitted from the light source and partially reflected on the user's skin or blood vessels (eg, RED and infrared). : photodiode) may be included. For example, the second sensor 220 uses a plurality of light sources capable of emitting light of the same or different wavelengths, respectively, to detect a part of the user's body (eg, a blood vessel located on a finger or wrist, or a lower radial artery of the wrist). can radiate an optical signal, accumulate photocharges corresponding to the amount of incident light reflected or transmitted through a plurality of light receivers, and convert biosignals in the form of analog currents into digital signals according to the accumulated photocharges. can The second sensor 220 may operate to acquire a plurality of pieces of biometric information, for example, at least two pieces of biometric information among heart rate, blood oxygen saturation, BIA signal, ECG signal, and blood pressure. For example, the second sensor 220 may operate to simultaneously acquire heart rate, blood oxygen saturation, and BIA signals. According to an embodiment, the second sensor 220 may include a laser diode (LD) and an image sensor. According to an embodiment, the second sensor 220 may include a plurality of sensors for obtaining each of a plurality of biometric information. For example, the second sensor 220 may be an independent (or separate) sensor for acquiring a plurality of pieces of biometric information, such as a sensor for obtaining a pulse rate, a sensor for obtaining oxygen saturation, and a sensor for obtaining blood pressure. of) may include sensors.

According to various embodiments, a sensing value related to the movement of the electronic device 101 obtained through the first sensor 210 or an oxygen saturation value obtained through the second sensor 220 may be stored in the memory 130 . there is.

According to various embodiments, the memory 130 may include a buffer. For example, the electronic device 101 may temporarily store the oxygen saturation value obtained from the second sensor 220 in a buffer.

According to various embodiments, the processor 120 may be operatively connected to the first sensor 210 , the second sensor 220 and the memory 130 . For example, the processor 120 may perform at least one of obtaining, processing, or storing data from the first sensor 210 , the second sensor 220 , and the memory 130 .

According to various embodiments, the processor 120 may correct the oxygen saturation value stored in the buffer and store the corrected oxygen saturation value in the memory 130 when a movement greater than or equal to a set value is detected through the first sensor 210. there is. According to an embodiment, if there is a limit on the size of the buffer, the processor 220 may initialize the buffer after completion of correction. According to one embodiment, the processor 220 may periodically delete data stored in the memory 130 . For example, the processor 120 may delete oxygen saturation data stored in the memory for a period of time (eg, 3 months) or more. For example, the processor 120 may sequentially delete the first stored data when the previously stored oxygen saturation data exceeds a specified number. Although it has been described above that the electronic device 101 includes the first sensor 210 and the second sensor 220, according to various embodiments, the electronic device 101 is a terminal communicating with an external electronic device that is a wearable device. It can be a device or a server.

According to various embodiments, when the electronic device 101 is a terminal device or a server that communicates with the wearable device, the electronic device 101 transmits information from an external electronic device through a communication module (eg, the communication module 190 of FIG. 1 ). A sensing value or an oxygen saturation value related to a movement of an external electronic device may be received, and the received oxygen saturation value may be corrected. For example, when the motion of the external electronic device is confirmed based on the sensing value received from the external electronic device and exceeds a set value, the electronic device 101 can determine whether the posture maintenance period before motion detection is equal to or longer than the set period. According to various embodiments of the present disclosure, the electronic device 101 acquires a oxygen saturation reference value stored in a memory when the posture maintenance period before motion detection is equal to or longer than a set period, and the electronic device 101 obtains the oxygen saturation reference value received from the external electronic device during the posture maintenance period before motion detection. The oxygen saturation value can be corrected based on the oxygen saturation reference value.

According to various embodiments, even when the electronic device 101 is a terminal device or a server communicating with a wearable device, the following diagrams are performed except for the operation of sensing the movement of the electronic device 101 through the sensor and the operation of measuring the oxygen saturation value. Through the operations of 3 to 11, the oxygen saturation value may be corrected.

3 is a flowchart illustrating an oxygen saturation correction operation of an electronic device according to various embodiments of the present disclosure.

According to various embodiments, referring to FIG. 3 , an electronic device (eg, the electronic device 101 of FIG. 1 , the processor 120 of FIG. 1 , the electronic device 101 of FIG. 2 , or the processor 120 of FIG. 2 ) ) In operation 310, when a motion greater than a set value is detected through the first sensor (eg, the sensor module 176 in FIG. 1 or the first sensor 210 in FIG. 2), the posture maintenance period prior to motion detection is set. You can check whether the value is greater than or equal to.

According to various embodiments, the electronic device may acquire a sensing value based on a Cartesian coordinate system or a spherical coordinate system through the first sensor. According to various embodiments, when a sensing value based on a Cartesian coordinate system is obtained through the first sensor, the electronic device may convert the sensing value based on the Cartesian coordinate system into a sensing value based on a spherical coordinate system.

According to various embodiments of the present disclosure, when a change in a sensing value based on a spherical coordinate system is greater than or equal to a set value, the electronic device may detect movement equal to or greater than the set value. A motion detection operation of an electronic device according to various embodiments will be described below with reference to FIG. 7 .

According to various embodiments of the present disclosure, the electronic device may increase the posture index stored in the memory when a movement greater than a set value is detected. For example, in a state where a posture index prior to motion is stored in memory and a motion greater than a set value is detected, the electronic device determines that the user's posture has changed, adds 1 to the stored posture index, and returns the posture index to which 1 was added. can be stored in memory. According to various embodiments, the posture index may be a tag for distinguishing a plurality of postures taken by the user while sleeping.

According to various embodiments, after increasing the posture index, the electronic device may maintain the increased posture index even if a movement greater than the set value is detected for a set period of time. For example, if the electronic device continuously moves as the user rolls over during sleep, the electronic device detects a motion greater than the set value once or more for a set time (eg, 3 seconds) after detecting a motion greater than the set value, the electronic device indexes the posture even if the motion exceeds the set value is detected. It is possible to prevent the posture index from being unnecessarily increased by maintaining .

An operation of increasing a posture index and an operation of maintaining a posture index for a set period of time according to various embodiments will be described below with reference to FIGS. 5, 7, and 8 .

According to various embodiments of the present disclosure, in operation 320, the electronic device sets a pre-measured oxygen saturation standard stored in a memory (eg, the memory 130 of FIG. 1 or the memory 130 of FIG. 2) if the posture maintenance period is longer than the set period. value can be obtained.

According to various embodiments, the set period of the posture maintenance period may be set by a manufacturer or a user as a preset value prior to measurement of oxygen saturation.

According to various embodiments, the set period of the posture maintenance period may be obtained as a minimum period in which a difference between the maximum value of the oxygen saturation value measured in each period and the oxygen saturation reference value is within a set range among a plurality of periods of different lengths. can

According to various embodiments, an operation of obtaining a set period of a posture maintenance period will be described with reference to FIGS. 10A and 10B.

According to various embodiments, the oxygen saturation reference value stored in the memory may be a maximum value of oxygen saturation values pre-measured in a resting state before measuring oxygen saturation during sleep. For example, the stable state may mean a situation in which the user is in a non-sleep and respiration stable state and the second sensor operates normally. According to various embodiments, the oxygen saturation reference value may be an average value of previously measured oxygen saturation values in a stable state. According to various embodiments, the electronic device may receive pre-stored oxygen saturation data in a stable state through an external electronic device operatively connected to the electronic device. For another example, the electronic device may receive pre-stored oxygen saturation data through a server connected to the same account.

According to various embodiments, in operation 330, the electronic device receives an oxygen saturation value obtained through a second sensor (eg, the sensor module 176 of FIG. 1 or the second sensor 220 of FIG. 2) during the posture maintenance period. It can be calibrated based on the oxygen saturation reference value.

According to various embodiments of the present disclosure, the memory may include a buffer, and the electronic device may store an oxygen saturation value obtained during a posture maintenance period prior to motion detection in the buffer. According to various embodiments, the buffer may temporarily store data.

According to various embodiments of the present disclosure, when a motion greater than a set value is detected, the electronic device may correct an oxygen saturation value stored in a buffer and obtained during a posture maintenance period prior to motion detection based on an oxygen saturation reference value. According to various embodiments, the electronic device may store the corrected oxygen saturation value in a memory.

According to various embodiments of the present disclosure, the electronic device may store the oxygen saturation value obtained through the second sensor in a buffer after a movement greater than a set value is detected. According to various embodiments of the present disclosure, when a new motion equal to or greater than a set value is detected, the electronic device may perform a correction operation for an oxygen saturation value stored in a buffer before the new motion is detected.

According to various embodiments of the present disclosure, the electronic device may obtain a maximum value of oxygen saturation obtained during a posture maintenance period prior to motion detection. For example, the electronic device may obtain the maximum value of the oxygen saturation value obtained during the posture maintenance period before motion detection as the base line of the oxygen saturation value. According to various embodiments of the present disclosure, the electronic device may divide the posture maintenance period before motion detection into a plurality of sections, and obtain the maximum oxygen saturation value of each section as a baseline.

According to various embodiments of the present disclosure, the electronic device may correct an oxygen saturation value obtained during a posture maintenance period prior to motion detection based on a difference between a maximum value and an oxygen saturation reference value.

According to various embodiments, the electronic device divides a posture maintenance period before motion detection into a plurality of sections, obtains an average value of oxygen saturation values in each section as a baseline, and obtains a difference between the obtained average value and the oxygen saturation reference value. An oxygen saturation value acquired during the posture maintenance period may be corrected based on . According to various embodiments, when an average value of oxygen saturation values is obtained as a baseline, the oxygen saturation reference value may also be an average value of oxygen saturation values measured in a stable state.

According to various embodiments of the present disclosure, when the posture maintenance period before motion detection is less than a set period, the electronic device may ignore the oxygen saturation value obtained during the posture maintenance period before motion detection.

According to various embodiments, an oxygen saturation correction operation according to time will be described with reference to FIG. 9 .

4 is a diagram for explaining an oxygen saturation correction operation of an electronic device according to various embodiments of the present disclosure.

According to various embodiments, referring to FIG. 4 , an electronic device (eg, the electronic device 101 of FIG. 1 , the processor 120 of FIG. 1 , the electronic device 101 of FIG. 2 , or the processor 120 of FIG. 2 ) ) obtains a sensing value 420 related to the motion of the electronic device through a first sensor (eg, the sensor module 176 of FIG. 1 or the first sensor 210 of FIG. 2 ) for measuring the motion of the electronic device. And, the oxygen saturation value 410 may be obtained through a second sensor (eg, the sensor module 176 of FIG. 1 or the second sensor 220 of FIG. 2 ) for measuring oxygen saturation.

According to various embodiments, the electronic device may detect points 430 and 431 where the sensing value 420 related to the movement of the electronic device changes beyond a set value.

According to various embodiments, the electronic device determines that the posture of the user wearing the electronic device has changed at points 430 and 431 where the sensing value 420 related to the motion of the electronic device changes by more than a set value, and the motion of the electronic device It can be confirmed that the posture of the user is maintained in a section in which the sensing values 430 and 431 of the points 430 and 431 in which the sensing value 420 related to is changed by more than a set value are maintained.

According to various embodiments, the oxygen saturation value 412 obtained through the second sensor between the first point 430 and the second point 431 where the movement of the electronic device is detected is stored in a memory (eg, the memory of FIG. 1 ). It can be confirmed that there is an offset 413 compared to the oxygen saturation reference value 411 in a stable state stored in 130 or the memory 130 of FIG. 2 .

According to various embodiments of the present disclosure, when the electronic device detects a second point 431 where the sensing value 420 related to the motion of the electronic device changes by more than a set value, a distance between the first point 430 and the second point 431 is detected. The corrected oxygen saturation value 414 may be obtained by correcting the oxygen saturation value 412 based on the oxygen saturation reference value 411 .

As a result, if an error occurs in oxygen saturation measurement due to the electronic device being pressed against the user's body due to tossing or lifting during sleep, a more accurate oxygen saturation value during sleep can be obtained by correcting the error to a normal range.

5 is a flowchart illustrating an oxygen saturation correction operation of an electronic device according to a posture maintenance period according to various embodiments of the present disclosure.

According to various embodiments, referring to FIG. 5 , an electronic device (eg, the electronic device 101 of FIG. 1 , the processor 120 of FIG. 1 , the electronic device 101 of FIG. 2 , or the processor 120 of FIG. 2 ) ) may measure movement and oxygen saturation in operation 510.

According to various embodiments, the electronic device measures the movement of the electronic device through a first sensor (eg, the sensor module 176 of FIG. 1 or the first sensor 210 of FIG. 2 ), and a second sensor (eg, the sensor module 176 of FIG. 2 ). The oxygen saturation value may be measured through the sensor module 176 of FIG. 1 or the second sensor 220 of FIG. 2 .

According to various embodiments, the electronic device may store the motion measurement value and the oxygen saturation value in a memory (eg, the memory 130 of FIG. 1 or the memory 130 of FIG. 2 or a buffer).

According to various embodiments, in operation 520, the electronic device may check whether the electronic device moves more than a set value.

According to various embodiments of the present disclosure, when a sensing value obtained through the first sensor is greater than or equal to a set value, the electronic device may determine that the user's posture has changed. For example, when the direction of the electronic device is changed based on the sensed value, the electronic device may determine that the user's posture has changed.

The orientation of an electronic device according to a user's sleeping posture according to various embodiments will be described below with reference to FIG. 6 .

According to various embodiments of the present disclosure, if movement greater than a set value is not confirmed (Operation 520 - No), the electronic device may return to Operation 510 and continue measuring motion and oxygen saturation.

According to various embodiments of the present disclosure, when a motion equal to or greater than a set value is confirmed (520-Yes), the electronic device may increase the posture index in operation 530.

According to various embodiments, after increasing the posture index, the electronic device may maintain the increased posture index even if a movement greater than the set value is detected for a set period of time. For example, if the electronic device continuously moves as the user rolls over during sleep, the electronic device detects a motion greater than the set value once or more for a set time (eg, 3 seconds) after detecting a motion greater than the set value, the electronic device indexes the posture even if the motion exceeds the set value is detected. It is possible to prevent the posture index from being unnecessarily increased by maintaining .

According to various embodiments, in operation 540, the electronic device may check whether the previous posture index maintenance period is equal to or longer than a set period. For example, when the posture index increases according to movement, the electronic device may check whether the index maintenance period before the posture index increases is equal to or longer than a set period.

According to various embodiments, the set period of the posture maintenance period may be set by a manufacturer or a user as a preset value prior to measurement of oxygen saturation. According to various embodiments, an operation of obtaining a set period of a posture maintenance period will be described with reference to FIGS. 10A and 10B.

According to various embodiments, if the previous posture index maintenance period is equal to or longer than the set period (Operation 540-Yes), the electronic device may correct the offset based on the stored oxygen saturation reference value in operation 550. According to various embodiments, the electronic device may perform an oxygen saturation correction operation only when the posture before motion detection is longer than a set period.

For example, if the period during which the previous posture index maintenance period is set is equal to or longer than the set period, the electronic device may obtain a baseline based on an oxygen saturation value stored in a buffer and acquired during the previous posture index maintenance period. According to various embodiments, the electronic device may divide the previous posture index maintenance period into a plurality of sections, and obtain a maximum value or an average value of oxygen saturation values in each section as a baseline.

According to various embodiments, the electronic device may obtain an offset between a baseline and an oxygen saturation reference value based on an oxygen saturation reference value stored in a memory. For example, the oxygen saturation reference value may be a maximum value or an average value of oxygen saturation in a stable state. For example, the offset may be a difference between the baseline and the oxygen saturation reference value. According to various embodiments, the offset may be a ratio of the baseline to the oxygen saturation reference value (eg, a value obtained by dividing the baseline by the oxygen saturation reference value).

According to various embodiments, the electronic device may correct the oxygen saturation value obtained during the previous posture index maintenance period by reflecting the acquired offset to the oxygen saturation value obtained during the previous posture index maintenance period. For example, the electronic device may correct the oxygen saturation value by adding or subtracting an offset from the oxygen saturation value obtained during the previous posture index maintenance period. According to various embodiments, the electronic device may correct the oxygen saturation value by multiplying the oxygen saturation value by an offset.

According to various embodiments, if the previous posture index maintenance period is less than the set period (Operation 540 - No), the electronic device may end the oxygen saturation correction operation. According to various embodiments, the electronic device may ignore the oxygen saturation value measured during the previous attitude index period.

6 is a diagram for explaining a direction of an electronic device according to a sleeping posture according to various embodiments of the present disclosure;

According to various embodiments, referring to FIG. 6 , the direction of an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 101 of FIG. 2 ) may be associated with a sleeping posture.

For example, when the sleeping posture is the supine position (a), the direction of the electronic device is such that the direction of gravity in the 3-dimensional coordinate system within the electronic device coincides with the -Z axis, and the angle with the Z axis is theta ( theta) is 180 degrees, and psi, which is an angle with the X axis, may be 0 degrees.

According to various embodiments of the present disclosure, when the sleeping posture is a prone position, the direction of the electronic device is similar to that of the lying posture, but the direction of the electronic device is continuously sensed, thereby detecting a change in direction. The electronic device can distinguish between a supine position and a prone position.

According to various embodiments of the present disclosure, when the sleeping posture is a left lateral position (b), the direction of the electronic device corresponds to the direction of gravity in the 3D coordinate system within the electronic device and the Z axis, and theta is 0 degrees. , and pi may be 0 degrees.

According to various embodiments, when the sleeping posture is the right lateral position (c), the direction of the electronic device does not coincide with any axis in the 3D coordinate system in the electronic device, and theta is 120 degrees, and pi may be 30 degrees.

According to various embodiments, the sleeping posture and the direction of the electronic device are not limited to the above description, and since the direction of the electronic device changes according to the change in the sleeping posture, the electronic device sleeps when a change in the direction of the electronic device is detected. It can be seen that the attitude has changed. According to various embodiments, the electronic device may check a sleeping posture after movement based on a sleeping posture before movement, a direction of the electronic device, and a direction of the electronic device after movement.

7 is a flowchart illustrating an operation of changing a posture index of an electronic device according to various embodiments.

According to various embodiments, referring to FIG. 7 , an electronic device (eg, the electronic device 101 of FIG. 1 , the processor 120 of FIG. 1 , the electronic device 101 of FIG. 2 , or the processor 120 of FIG. 2 ) ) may measure the movement of the electronic device through a first sensor (eg, the sensor module 176 of FIG. 1 or the first sensor 210 of FIG. 2 ) in operation 710 . For example, the electronic device may measure movement based on a Cartesian coordinate system through a first sensor (eg, an acceleration sensor). For example, the electronic device may measure movement in the X-axis direction, Y-axis direction, and Z-axis direction.

According to various embodiments, the electronic device may extract posture information in operation 720 . For example, the electronic device may change a sensing value based on a Cartesian coordinate system to a sensing value based on a spherical coordinate system. According to various embodiments, the electronic device may determine theta, which is an angle with the Z-axis within a 3D coordinate system in the electronic device, based on motion in the X-axis direction, motion in the Y-axis direction, and motion in the Z-axis direction. ) and psi, which is an angle with the X axis, can be obtained. According to various embodiments, the electronic device may check the direction of the electronic device based on a sensing value based on a spherical coordinate system.

According to various embodiments, the electronic device may check the sleeping posture of the user based on the direction of the electronic device. For example, the electronic device may check a sleeping posture after movement based on a sleeping posture before movement, a direction of the electronic device, and a direction of the electronic device after movement.

According to various embodiments, when the electronic device obtains a sensing value based on a spherical coordinate system through the first sensor, an operation of changing the sensing value based on the Cartesian coordinate system to a sensing value based on the spherical coordinate system is omitted. It can be.

According to various embodiments, in operation 730, the electronic device may check whether the amount of change in pi (Abs(Δpsi)) is greater than or equal to a threshold value. For example, the threshold may be a preset value for the amount of change in pie.

According to various embodiments of the present disclosure, when the change amount of pie is less than a set value (Operation 730-No), the electronic device may maintain the posture index in operation 740. For example, if the amount of change in phi is less than a set value, the electronic device may determine that the posture has not changed and maintain the posture index.

According to various embodiments, if the change in pi is greater than or equal to the set value (operation 730 - Yes), in operation 750, the electronic device may check whether the change in theta (Abs(Δtheta)) is equal to or greater than the threshold value. For example, the threshold may be a preset value for the change amount of theta.

According to various embodiments, if the change in theta is less than the set value (Operation 750 - No), in Operation 740, the electronic device may maintain the posture index. For example, if the change in theta is less than a set value, the electronic device may determine that the posture has not changed and maintain the posture index.

According to various embodiments, if the change in theta is equal to or greater than the set value (Operation 750 - Yes), the electronic device may determine whether the refractory period has elapsed in Operation 760 . For example, the refractory period may be a period (eg, 3 seconds) set to prevent a posture index from increasing unnecessarily when the electronic device continuously moves as the user rolls over during sleep.

According to various embodiments, operation 730 of checking the amount of change in pi may be performed after operation 750 of checking the amount of change in theta. According to various embodiments, in addition to the amount of change in pi and the amount of change in theta, a change in posture may be checked based on vector values, pitch, roll, and yaw values of each axis.

According to various embodiments, when the refractory period has not elapsed (760 - No), in operation 740, the electronic device may maintain the posture index. For example, if the attitude index is increased and is in the refractory period, the electronic device may maintain the attitude index without increasing it even if the theta change amount and the pi change amount greater than the set value are detected.

According to various embodiments, when the refractory period has elapsed (760-Yes), in operation 770, the electronic device may increase the posture index. For example, the electronic device may update a value obtained by adding 1 to the stored posture index value as the posture index.

8 is a diagram for explaining an operation of changing a posture index of an electronic device according to various embodiments. For example, FIG. 8 illustrates the operation of a refractory period of an electronic device.

According to various embodiments, referring to FIG. 8 , an electronic device (eg, the electronic device 101 of FIG. 1 , the processor 120 of FIG. 1 , the electronic device 101 of FIG. 2 , or the processor 120 of FIG. 2 ) ) maintains the posture index for a set period 810 after increasing the position index from 19 to 20 even when the measured theta and psi values are continuously changed, After a period of time, you can increase the posture index from 20 to 21. According to various embodiments, even after the attitude index is increased to 21, the attitude index may be maintained during the set period 810 even if the theta and pi values change by more than the set value.

Accordingly, when the user continuously moves and the direction of the electronic device continuously changes, an unnecessary increase in the posture index can be prevented.

9 is a diagram for describing an oxygen saturation correction operation of an electronic device according to time according to various embodiments of the present disclosure.

According to various embodiments, referring to FIG. 9(a) , an electronic device (eg, the electronic device 101 of FIG. 1 , the processor 120 of FIG. 1 , the electronic device 101 of FIG. 2 , or the processor of FIG. 2 ) (120)) can measure the oxygen saturation (SpO2) value (eg, 95%) in a state where the posture index is 11. For example, the measured oxygen saturation value may be stored in a buffer.

According to various embodiments, the electronic device may acquire the corrected oxygen saturation value 910 by correcting the oxygen saturation value measured during the period when the posture index is 10 at the time when the posture index is changed from 10 to 11. For example, since the oxygen saturation value measured during the period when the posture index is 10 is constant and the corrected oxygen saturation value 910 is 93%, the oxygen saturation reference value may be 93%.

According to various embodiments, referring to FIG. 9(b) , the electronic device changes the posture index from 11 to 12 based on the motion of the electronic device detected at time t1, and the posture index is 11. It is possible to check whether the oxygen saturation value has been corrected. For example, the electronic device may check that the oxygen saturation value is corrected if the period during which the pre-movement posture index is maintained is longer than a set period (eg, 5 sections).

According to various embodiments, the period in which the posture index is 11 is 2 sections, which is shorter than the set posture maintenance period of 5 sections, so the electronic device may ignore (920) the measured oxygen saturation value without correcting it.

According to various embodiments, referring to FIG. 9(c) , the electronic device may store the oxygen saturation value 930 measured from t1 when the attitude index is changed to 12 to the present t2 in a buffer.

According to various embodiments, referring to FIG. 9(d) , since the posture index is maintained at 12 even after t2, the electronic device may store the oxygen saturation value 940 measured during the period in which the posture index is maintained at 12 in a buffer. there is.

According to various embodiments, the electronic device may change the posture index from 12 to 13 based on the movement of the electronic device detected at time t3, and check whether the oxygen saturation value measured for the 12 period is corrected for the posture index. .

According to various embodiments, a period in which the posture index is 12 is longer than a set posture maintenance period of 5 sections, and the electronic device converts the oxygen saturation value 940 measured during the period in which the posture index is 12 to an oxygen saturation reference value (eg, : 93%).

According to various embodiments, referring to FIG. 9(e), the electronic device determines that 80%, the maximum value of the oxygen saturation value measured in a period in which the posture index is 12, is in a stable state, and 80% is the oxygen saturation reference value. Corrected oxygen saturation value 950 may be obtained by correcting to correspond to 93%.

10A is a diagram for explaining an operation of setting a threshold value for a posture maintenance period of an electronic device according to various embodiments. For example, the threshold of the posture maintenance period may be set when the electronic device is manufactured, or may be set by the user. According to various embodiments, FIG. 10A is a graph obtained by applying a moving window method to an oxygen saturation measurement value of a sleep apnea patient. According to various embodiments, the length of the window may be a candidate for a threshold of the posture maintenance period.

According to various embodiments, referring to FIG. 10A , a histogram showing the maximum value of oxygen saturation (SpO 2 ) within the window according to the length of the window and the maximum value of oxygen saturation within the window and the oxygen saturation value in a stable state. You can check the graph showing the difference (Movmax(SpO2,t)). According to various embodiments, the length of the window may be 1 second (s), 30 seconds, 60 seconds, 5 minutes (m), 10 minutes, 20 minutes, or 30 minutes.

According to various embodiments, the x-axis of the histogram may be the oxygen saturation, and the y-axis may be the number of windows having the maximum oxygen saturation or a ratio of windows having the maximum oxygen saturation to the total number of windows.

According to various embodiments, referring to the histogram, as the length of the window increases, a distribution in which the maximum value of the oxygen saturation value within the window does not drop in the intermittent oxygen saturation value due to sleep apnea and is equal to or greater than the stable state oxygen saturation (1010) can be confirmed. can Referring to this, it can be seen that the longer the length of the window, the lower the oxygen saturation value due to sleep apnea is ignored. In addition, if the threshold of the posture maintenance period is long, even when the posture is maintained constant, there may be a large amount of data in which the measured oxygen saturation value is ignored without correction.

According to various embodiments, when the length of the window is short, referring to the difference between the maximum value of oxygen saturation within the window and the value of oxygen saturation in a stable state (Movmax(SpO2,t)), the maximum value of oxygen saturation within the window It can be confirmed that the difference between the oxygen saturation level 1010 in the stable state and the oxygen saturation level 1010 has a different value for each window and is not constant. Referring to this, when the length of the window is too short, an inaccurate oxygen saturation value may be obtained due to correction due to a different offset for each window.

According to various embodiments, as shown in FIG. 10B, the threshold of the posture maintenance period is the minimum period in which the difference between the maximum value of the measured oxygen saturation value and the oxygen saturation reference value among the lengths of a plurality of windows is within a set range. can be set.

10B is a diagram for explaining an operation of setting a threshold for a posture maintenance period of an electronic device according to various embodiments. For example, FIG. 10B shows the minimum value of the difference between the maximum value of oxygen saturation within the window of FIG. 10A obtained from 1 person and the minimum value of the oxygen saturation value in a stable state obtained from 719 people and prepared as a graph according to the length of the window. . According to various embodiments, the maximum oxygen saturation value when the window is 30 minutes may be assumed as the stable oxygen saturation value.

According to various embodiments, referring to FIG. 10B , when the length of the window is as short as 30 seconds, when the maximum value of the window is considered as the baseline, it can be confirmed that an average difference of 6% from the oxygen saturation value in the stable state remains. This difference decreases as the length of the window increases, and considering the measurement error of oxygen saturation as 2%, it can be confirmed that the length of the window of 5 to 10 minutes is suitable as the threshold for the posture maintenance period. According to various embodiments, if the posture is maintained for 5 to 10 minutes or more after the sleeping posture is changed, the maximum value of the corresponding section may be regarded as a baseline corresponding to a stable state.

According to various embodiments, an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 101 of FIG. 2 ) may include a first sensor (eg, the sensor module 176 of FIG. 1 ) for detecting motion. Alternatively, the first sensor 210 in FIG. 2 ), a second sensor for measuring oxygen saturation (eg, the sensor module 176 in FIG. 1 or the second sensor 220 in FIG. 2 ), a memory (eg, in FIG. 1 ). memory 130 or memory 130 of FIG. 2 ) and at least one processor (eg, processor 120 of FIG. 1 or processor 2 of FIG. 2 ) operatively connected with the first sensor, the second sensor, and the memory 120)), wherein the at least one processor, when a motion greater than a set value is detected through the first sensor, checks whether a period of maintaining the posture before the motion detection is longer than a set period, and returns the posture before the motion detection. If the maintenance period is longer than a set period, an oxygen saturation reference value stored in the memory is acquired, and an oxygen saturation value acquired through the second sensor during a posture maintenance period prior to motion detection is corrected based on the oxygen saturation reference value. can do.

According to various embodiments, the at least one processor obtains a sensing value based on a Cartesian coordinate system through the first sensor, and performs sensing based on a spherical coordinate system based on the sensing value based on the Cartesian coordinate system. A value is acquired, and if a change in the sensing value based on the spherical coordinate system is greater than or equal to the set value, it may be detected as a movement greater than or equal to the set value.

According to various embodiments of the present disclosure, the at least one processor increases a posture index stored in the memory when a motion greater than the set value is detected, and even if a motion greater than the set value is detected for a set period of time after increasing the posture index. An increased posture index can be maintained.

According to various embodiments, the set period may be obtained as a minimum period in which a difference between the maximum oxygen saturation value measured in each period and the oxygen saturation reference value is within a set range among a plurality of periods having different lengths. .

According to various embodiments of the present disclosure, the memory includes a buffer, and the at least one processor stores an oxygen saturation value obtained during a posture maintenance period before motion detection in the buffer, and when a motion greater than or equal to the set value is detected. , The oxygen saturation value obtained during the posture maintenance period before the motion detection stored in the buffer may be corrected based on the oxygen saturation reference value.

According to various embodiments, the at least one processor may store the oxygen saturation value obtained through the second sensor in the buffer after a movement equal to or greater than the set value is detected.

According to various embodiments of the present disclosure, the at least one processor obtains a maximum value of oxygen saturation values obtained during a posture maintenance period before detecting the motion, and performs the movement based on a difference between the maximum value and the oxygen saturation reference value. An oxygen saturation value obtained during a posture maintenance period prior to detection may be corrected.

According to various embodiments, the oxygen saturation reference value may be a maximum value of previously measured oxygen saturation values in a stable state.

According to various embodiments of the present disclosure, the at least one processor may ignore the oxygen saturation value obtained during the posture maintenance period before the motion detection when the posture maintenance period before the motion detection is less than a set period.

According to various embodiments of the present disclosure, a control method of an electronic device may include, when a movement equal to or greater than a set value is detected through a first sensor for detecting motion, determining whether a period of maintaining a posture prior to motion detection is greater than or equal to a set period of time, the motion If the posture maintenance period before detection is longer than the set period, the oxygen saturation value obtained through the operation of acquiring the oxygen saturation reference value stored in the memory and the oxygen saturation value obtained through the second sensor for measuring oxygen saturation during the posture maintenance period before the motion detection is described as An operation of correcting based on the oxygen saturation reference value may be included.

According to various embodiments of the present disclosure, the operation of determining whether the period of maintaining the posture before the motion detection is equal to or longer than a set period of time may include obtaining a sensing value based on the Cartesian coordinate system through the first sensor, and performing sensing based on the Cartesian coordinate system. Based on the value, a sensing value based on a spherical coordinate system is acquired, and if a change in the sensing value based on the spherical coordinate system is greater than or equal to the set value, a movement greater than or equal to the set value may be detected.

According to various embodiments of the present disclosure, the at least one processor, when detecting a motion greater than the set value, increases the posture index stored in the memory, and detects a motion greater than the set value for a set period of time after increasing the posture index. Even if it is, an operation of maintaining the increased posture index may be further included.

According to various embodiments, the set period may be obtained as a minimum period in which a difference between the maximum oxygen saturation value measured in each period and the oxygen saturation reference value is within a set range among a plurality of periods having different lengths. .

According to various embodiments of the present disclosure, the method may further include storing an oxygen saturation value obtained during a posture maintenance period prior to motion detection in a buffer included in the memory, and the correcting operation may be performed when a motion greater than or equal to the set value is detected. , The oxygen saturation value obtained during the posture maintenance period before the motion detection stored in the buffer may be corrected based on the oxygen saturation reference value.

According to various embodiments, the method may further include storing an oxygen saturation value obtained through the second sensor in the buffer after a motion equal to or greater than the set value is detected.

According to various embodiments of the present disclosure, the correcting operation may include obtaining a maximum value of oxygen saturation values obtained during a posture maintenance period prior to the motion detection, and detecting the motion based on a difference between the maximum value and the oxygen saturation reference value. An oxygen saturation value obtained during a previous posture maintenance period may be corrected.

According to various embodiments, the oxygen saturation reference value may be a maximum value of previously measured oxygen saturation values in a stable state.

According to various embodiments of the present disclosure, if the posture maintenance period before the motion detection is less than a set period, an operation of ignoring the oxygen saturation value obtained during the posture maintenance period before the motion detection may be further included.

According to various embodiments of the present disclosure, an electronic device includes a communication module, a memory, and at least one processor operatively connected to the communication module and the memory, and the at least one processor receives information from an external electronic device through the communication module. When the motion of the external electronic device is determined to be greater than or equal to a set value based on the received sensing value, it is determined whether the posture maintenance period before the motion detection is longer than a set period, and if the posture maintenance period before the motion detection is longer than a set period, An oxygen saturation reference value stored in the memory may be acquired, and an oxygen saturation value received from the external electronic device during a posture maintenance period prior to the motion detection may be corrected based on the oxygen saturation reference value.

According to various embodiments of the present disclosure, when the movement of the external electronic device equal to or greater than the set value is confirmed, the at least one processor increases a posture index stored in the memory, and increases the posture index to the set value for a set period of time. Even if the movement of the external electronic device is detected, the increased posture index may be maintained.

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

Various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, like reference numbers may be used for like or related elements. The singular form of a noun corresponding to an item may include one item or a plurality of items, unless the relevant context clearly dictates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A Each of the phrases such as "at least one of , B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first", "second", or "first" or "secondary" may simply be used to distinguish a given component from other corresponding components, and may be used to refer to a given component in another aspect (eg, importance or order) is not limited. A (e.g., first) component is said to be "coupled" or "connected" to another (e.g., second) component, with or without the terms "functionally" or "communicatively." When mentioned, it means that the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logical blocks, parts, or circuits. can be used as A module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document provide one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (eg, the program 140) including them. For example, a processor (eg, the processor 120 ) of a device (eg, the electronic device 101 ) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' only means that the storage medium is a tangible device and does not contain a signal (e.g. electromagnetic wave), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.

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

According to various embodiments, each component (eg, module or program) of the above-described components may include a single object or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component among the plurality of components prior to the integration. . According to various embodiments, the actions performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions are executed in a different order, or omitted. or one or more other actions may be added.

Claims (20)

In electronic devices,
a first sensor for detecting movement;
a second sensor for measuring oxygen saturation;
Memory; and
at least one processor operatively coupled with the first sensor, the second sensor, and the memory;
The at least one processor,
When a motion greater than a set value is detected through the first sensor, it is determined whether a period of maintaining the posture before the motion detection is greater than or equal to a set period;
Obtaining an oxygen saturation reference value stored in the memory when the posture maintenance period before the motion detection is longer than a set period,
An electronic device configured to correct an oxygen saturation value obtained through the second sensor during a posture maintenance period before motion detection based on the oxygen saturation reference value.
According to claim 1,
The at least one processor,
Obtaining a sensing value based on an orthogonal coordinate system through the first sensor,
Obtaining a sensing value based on a spherical coordinate system based on a sensing value based on the Cartesian coordinate system,
If the change in the sensing value based on the spherical coordinate system is greater than or equal to the set value, the electronic device detects a movement greater than or equal to the set value.
According to claim 1,
The at least one processor,
When a motion greater than the set value is detected, a posture index stored in the memory is increased,
An electronic device that maintains the increased posture index even if a motion greater than the set value is detected for a set period of time after increasing the posture index.
According to claim 1,
The set period is
The electronic device according to claim 1 , wherein a difference between a maximum oxygen saturation value measured in each period and the oxygen saturation reference value among a plurality of periods having different lengths is obtained as a minimum period within a set range.
According to claim 1,
The memory includes a buffer,
The at least one processor,
Storing an oxygen saturation value obtained during a posture maintenance period before motion detection in the buffer;
The electronic device corrects an oxygen saturation value obtained during a posture maintenance period prior to the motion detection stored in the buffer based on the oxygen saturation reference value when a motion greater than the set value is detected.
According to claim 5,
The at least one processor,
An electronic device that stores the oxygen saturation value obtained through the second sensor in the buffer after a motion equal to or greater than the set value is detected.
According to claim 1,
The at least one processor,
Obtaining a maximum value of oxygen saturation values obtained during a posture maintenance period before motion detection;
An electronic device that corrects an oxygen saturation value obtained during a posture maintenance period prior to motion detection based on a difference between the maximum value and the oxygen saturation reference value.
According to claim 1,
The oxygen saturation reference value is,
An electronic device that is the maximum value of pre-measured oxygen saturation in a steady state.
According to claim 1,
The at least one processor,
The electronic device ignoring the oxygen saturation value obtained during the posture maintenance period before the motion detection when the posture maintenance period before the motion detection is less than a set period.
In the control method of an electronic device,
When a motion greater than a set value is detected through a first sensor for detecting motion, checking whether a period of maintaining the posture before the motion detection is longer than a set period;
obtaining an oxygen saturation reference value stored in a memory when the period of maintaining the posture before the motion detection is equal to or longer than a set period; and
and correcting, based on the oxygen saturation reference value, an oxygen saturation value acquired through a second sensor for measuring oxygen saturation during a posture maintenance period prior to motion detection.
According to claim 10,
The operation of checking whether the posture maintenance period before the motion detection is longer than the set period,
Obtaining a sensing value based on a Cartesian coordinate system through the first sensor,
Obtaining a sensing value based on a spherical coordinate system based on a sensing value based on the Cartesian coordinate system,
If the change in the sensing value based on the spherical coordinate system is greater than or equal to the set value, detecting a motion greater than or equal to the set value.
According to claim 10,
increasing a posture index stored in the memory when a motion equal to or greater than the set value is detected; and
After increasing the posture index, maintaining the increased posture index even if a motion greater than the set value is detected for a set period of time.
According to claim 10,
The set period is
A control method of an electronic device according to claim 1 , wherein a difference between a maximum oxygen saturation value measured in each period and the oxygen saturation reference value among a plurality of periods having different lengths is obtained as a minimum period within a set range.
According to claim 10,
Storing the oxygen saturation value obtained during the posture maintenance period before the motion detection in a buffer included in the memory;
The correcting operation is
and correcting, based on the oxygen saturation reference value, an oxygen saturation value obtained during a posture maintenance period prior to the motion detection, stored in the buffer, when a motion greater than the set value is detected.
According to claim 14,
The control method of the electronic device further comprising: storing the oxygen saturation value obtained through the second sensor in the buffer after a motion equal to or greater than the set value is detected.
According to claim 11,
The correcting operation is
Obtaining a maximum value of oxygen saturation values obtained during a posture maintenance period before motion detection;
A control method of an electronic device for correcting an oxygen saturation value obtained during a posture maintenance period before motion detection based on a difference between the maximum value and the oxygen saturation reference value.
According to claim 10,
The oxygen saturation reference value is,
A control method of an electronic device that is the maximum value of the oxygen saturation value measured in a steady state.
According to claim 10,
and ignoring the oxygen saturation value obtained during the posture maintenance period before the motion detection if the posture maintenance period before the motion detection is less than the set period.
In electronic devices,
communication module;
Memory; and
at least one processor operatively coupled with the communication module and the memory;
The at least one processor,
When the movement of the external electronic device is confirmed based on the sensing value received from the external electronic device through the communication module and exceeds a set value, it is determined whether a period of maintaining the posture before the motion detection is longer than a set period;
Obtaining an oxygen saturation reference value stored in the memory when the posture maintenance period before the motion detection is longer than a set period,
An electronic device configured to correct an oxygen saturation value received from the external electronic device during a posture maintenance period before the motion detection based on the oxygen saturation reference value.
According to claim 19,
The at least one processor,
When the movement of the external electronic device equal to or greater than the set value is confirmed, a posture index stored in the memory is increased;
After increasing the posture index, the electronic device maintains the increased posture index even when a motion of the external electronic device greater than or equal to the set value is detected for a set period of time.

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