WO2023084502A1 - 수면 모니터링 장치 및 그 동작 방법 - Google Patents
수면 모니터링 장치 및 그 동작 방법 Download PDFInfo
- Publication number
- WO2023084502A1 WO2023084502A1 PCT/IB2022/062049 IB2022062049W WO2023084502A1 WO 2023084502 A1 WO2023084502 A1 WO 2023084502A1 IB 2022062049 W IB2022062049 W IB 2022062049W WO 2023084502 A1 WO2023084502 A1 WO 2023084502A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleep
- user
- state
- eeg
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
- A61B5/1113—Local tracking of patients, e.g. in a hospital or private home
- A61B5/1115—Monitoring leaving of a patient support, e.g. a bed or a wheelchair
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
- A61B5/1116—Determining posture transitions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
- A61B5/1118—Determining activity level
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
- A61B5/307—Input circuits therefor specially adapted for particular uses
- A61B5/31—Input circuits therefor specially adapted for particular uses for electroencephalography [EEG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
- A61B5/372—Analysis of electroencephalograms
- A61B5/374—Detecting the frequency distribution of signals, e.g. detecting delta, theta, alpha, beta or gamma waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
- A61B5/4561—Evaluating static posture, e.g. undesirable back curvature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4809—Sleep detection, i.e. determining whether a subject is asleep or not
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4812—Detecting sleep stages or cycles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4815—Sleep quality
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
- A61B5/6815—Ear
- A61B5/6816—Ear lobe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
- A61B5/6815—Ear
- A61B5/6817—Ear canal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6832—Means for maintaining contact with the body using adhesives
- A61B5/6833—Adhesive patches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/003—Detecting lung or respiration noise
Definitions
- Sleep is known to have a great impact on human health and quality of life. Not only the amount of sleep, but also the quality of sleep is important. Sleeping well (going to sleep), sleeping well, and waking up well (going out) all affect the quality of this sleep. It is known that the quality of a person's sleep can be monitored by brain waves confirmed by measuring an electroencephalogram (EEG), and body movements during sleep can be monitored by an activity sensor. In addition, sleep disorders such as snoring or sleep apnea can be monitored by a microphone that listens to snoring during sleep and a sensor that measures blood oxygen saturation (SpO2).
- EEG electroencephalogram
- SpO2 blood oxygen saturation
- polysomnography is performed to monitor patients' sleep conditions and sleep disorders.
- polysomnography such as measuring an ECG by attaching multiple electrodes to the forehead, not only causes discomfort to the patient, but also has a limitation in that it is a one-time monitoring that can be monitored only on the day of the test.
- a health care-level bio-signal measuring device that measures brain waves by wearing a band on the forehead by the user himself in everyday life, not in a specialized clinic, has been introduced, and applications such as recording sleep time on smart watches have also been introduced. there is.
- sleep monitoring the technology that allows users to monitor their sleep quality every day has not yet been universalized due to limitations such as inconvenience in measurement and inaccuracy in determining sleep conditions.
- Republic of Korea Patent Registration No. 10-2046515 (publication date: November 29, 2019) proposes a healthcare system using a neckband type EEG measuring device.
- US Patent Publication No. US2016/0058366 suggests a sleep monitoring method in a watch-type wearable device worn on a wrist.
- US Patent Publication No. US2019/0038184 (published on February 7, 2019) proposes a watch-type wearable device that tracks a user's activity.
- Korean Patent Registration No. 10-2102421 (published date: April 20, 2020) proposes an earphone for measuring brain waves and a drowsy driving detection system using the same.
- the sleep state In monitoring the sleep state, it is accurately recognized whether the user's posture is a lying posture. By measuring and comparing the user's posture and/or body movement or tremors with EEG, the user's sleep state is more accurately and continuously measured.
- Continuity and continuity of all-night sleep monitoring is ensured by maintaining the wearer while stably maintaining electrical contact between the user's skin and the signal electrode for measuring the user's brain waves.
- a user When a user has an elevation disorder or a disorder phenomenon during sleep, it contributes to sleep monitoring as well as sleep quality improvement by providing a guide for inducing elevation and sleep stages.
- the sleep phase is appropriately induced so that it can help you go out refreshed. This device contributes to improving the quality of the user's sleep.
- a sleep monitoring device may include a communication interface and a processor.
- the processor uses the EEG signal measured by the EEG measurement unit of the earbud device worn on the user's ears to measure the user's brain wave during sleep ('sleep wave') and the brain wave during awakening. (Waveform during awakening, 'awake wave'). And the processor compares the result of the classification with sensor data (data from activity sensor) measured by an activity sensor included in the earbud device - the sensor data is time-synchronized with the EEG signal - Thus, the user's sleep state is classified into one of a plurality of categories.
- the processor classifies the sensor data measured by the activity sensor as either an active posture or a lying posture, and determines the sleep state of the user as: 1) Brain wave state during sleep while lying down (SS) ; 2) Active EEG state with arousal (AA); 3) waking EEG while lying down (SA); and 4) it is classified as one of a plurality of states including an active posture and an EEG state (AS) during sleep.
- SS Brain wave state during sleep while lying down
- AA Active EEG state with arousal
- SA waking EEG while lying down
- AS EEG state
- the processor continuously monitors the sleeping state of the user during a predetermined time interval between a first time point corresponding to the user's elevation and a second time point corresponding to the user's appearance. Classify as one of the dog's conditions. And the processor provides a result sequence of the state classification according to time as a sleep monitoring result for the user.
- the resultant sequence of the status classification may be, for example, a time-sequential array of classified status categories according to the flow of sleep time, and this may be a visualized graph.
- the processor classifies the sleep state of the user as one of the plurality of states at predetermined intervals during the time interval.
- the predetermined period may be a time unit such as 30 seconds, 1 minute, 5 minutes or 10 minutes.
- the state classification result sequence indicates that the sleep state between the time the user went to sleep and the time he woke up was 1) a state in which the user was in a lying position and brainwaves during sleep (SS); 2) Active EEG state with arousal (AA); 3) waking EEG while lying down (SA); and 4) a result classified as being in an active posture and an EEG state (AS) during sleep may be a list of results classified every 5 minutes or 10 minutes (may be another time unit, hereinafter the same).
- the processor removes outliers or noise of the temporary signal to improve the stability of the determination result. can be raised This process is possible in several embodiments.
- the processor classifies the sleep state of the user as one of the plurality of states for each predetermined period, at least one of the EEG signal and sensor data measured by the activity sensor within one period While applying a smoothing filter to remove outliers, the user's sleep state is determined as one of the plurality of states for each period in which the sleep state is to be determined.
- the smoothing filter is applied in this way, outliers or noise effects of the transient signal can be removed or reduced.
- the elimination of outliers determines the sleep state for each sub-period time segment in which each individual time segment is subdivided into smaller sub-period time segments, and then the dominant - that is, more frequent - sleep in the entire individual time segment It is also possible to determine the state as the representative state of the whole of the individual time interval.
- the processor determines the sleep state by using the EEG signal and sensor data measured by the activity sensor together.
- the removal of such outliers in individual time intervals or detailed time units may be performed by processing using temporal locality. For example, by referring to one or more processing results immediately before or after, a specific state that can be determined that the user's sleep state is not actually changed is ignored.
- the removal of outliers is possible in several ways.
- the sleep monitoring device may perform sleep quality evaluation for the entire monitored time period, for example, from light-off in bed to light-on in bed.
- the processor provides a sleep quality index corresponding to a ratio of a sum of sections classified as a brain wave state (SS) while lying down with respect to all of the time sections according to the classification result.
- SS brain wave state
- the entire time period subject to sleep monitoring can be exemplarily started when the user is in an active posture and an arousal brain wave state (AA) and then changes to a lying posture and an arousal brain wave state (SA). In another example, it may be started when the 'SA' state continues for a certain length (or number of times) or more.
- AA active posture and an arousal brain wave state
- SA arousal brain wave state
- 'SS When you wake up from sleep and enter the 'SA' phase that has not yet occurred, the entire time period subject to sleep monitoring may be determined, and when this 'SA' phase continues for a certain length (or number of times) or more It is also possible to determine the entire time interval.
- the first change from the 'SA' state to the 'SS' phase, when the user lies down and falls asleep, is the sleep level determined by the sleep monitoring device 101 by analyzing the EEG signal of the earbud device 100 It can be determined when it enters the second stage (non-REM level 2) of non-REM sleep, not REM sleep.
- the second stage non-REM level 2 of non-REM sleep
- REM sleep or non-REM level 1 sleep can be judged as 'SS' state, but the first elevation can be determined differently when the non-REM level 2 phase, in which sleep reaches a certain depth, begins.
- 'sleep quality' should be understood as a concept including 'sleep efficiency'). Lying down to sleep and standing up (AA for awake state, AS for not awake state) and lying but awake state (SA) are not good for overall sleep efficiency, so these states are If it is absent or short, the sleep quality index may be high.
- sleep quality may be determined in various ways. Accordingly, the sleep habit of the user may be analyzed by evaluating in more detail whether the cause of the drop in the sleep quality index is the 'AA' state, the 'AS' state, or the 'SA' state. For example, if the sleep EEG state or 'AS' state, which is a state of waking up, is longer than a certain length, sleep disorder behaviors such as waking up during sleep or even walking around may be identified. In addition, if 'SA', which is a state of waking up but still lying down during the entire evaluation time, appears for more than a certain period, what pattern and how long it lasts, or when the 'SA' state occurs, etc. A sleep disorder related to may be suspected, and the user may consult an expert such as a doctor regarding this.
- the sleep evaluation continues and is regarded as one sleep, and only the occurrence of the corresponding 'AA' state can be included in the evaluation. In this case, it can also appear when you wake up for a while and go to the bathroom, and if this case is repeated, it can be used as a basis for suspecting sleep disorders or urinary disorders.
- an activity sensor may include several individual sensors, such as a gyro sensor, an accelerometer sensor, or composite sensors with a fusion of two or more sensors.
- the sensor data measured by the activity sensor may include: a) a direction sensing value for determining whether the user's head is upright or lying down while the earbud device is worn on the ear; and b) an acceleration sensing value for determining whether the user moves at a certain level or more while wearing the earbud device on the ear.
- the processor may at least temporarily suspend classification of the sleep state when the acceleration sensing value indicates a state in which the motion is greater than or equal to the predetermined level.
- the earbud device may provide a microphone listening result for detecting the user's snoring during sleep. It can proceed and, if necessary, can also be recorded. Even at this time, it is necessary to distinguish between the user's own snoring and the snoring of others sleeping next to him.
- the processor according to an embodiment further receives the sound heard through the microphone of the earbud device, and when the sound corresponds to snoring, the processor determines whether the snoring of the user is the snoring of the user or other people around by using the acceleration sensing value. of snoring.
- a certain level of vibration is sensed together with the snoring sound, it is the user's own snoring, and if the snoring sound is heard but the vibration is below a certain standard, it is the snoring of another person sleeping next to him. Therefore, it may be ignored in the evaluation of the sleep state of the monitoring target user sleeping while wearing the earbud device.
- sleep disorders such as sleep apnea through blood oxygen saturation (SpO2) measurement are measured together with the user's EEG, and the user's posture is lying down. EEG is measured together and compared, the user's sleep state is more accurately and continuously measured.
- SpO2 blood oxygen saturation
- the device According to the device according to the embodiments, electrical contact between the signal electrode used for EEG measurement and the user's skin is stably maintained, thereby increasing the success rate of all-night sleep monitoring. Since this EEG is implemented in one device together with user behavior sensing, the accuracy and continuity of monitoring the sleeping posture are increased.
- time-series statistics can be provided, and precise analysis and utilization in various fields are possible. Precise utilization is possible, such as being able to accurately determine when and how much a user has a disability, such as when a user has a disability in elevation or a disability phenomenon during sleep.
- the sleep monitoring device does not simply monitor sleep and gives results, but directly user It also contributes to improving sleep quality.
- FIG. 1 shows a sleep monitoring device according to an embodiment.
- FIGS. 2A and 2B show front and back views, respectively, of an earbud device according to one embodiment.
- FIG. 3 is a diagram for explaining a process of monitoring sleep while sleeping while wearing an earbud device according to an embodiment.
- FIG. 4 is a view for explaining an earbud device having a forehead extension electrode according to another embodiment, and FIG. 5 shows a state in which the device is worn and sleep monitoring is performed.
- FIG. 6 illustrates a process of classifying a sleep state according to an embodiment.
- FIG. 7 is a view for explaining why an earbud-type device is more advantageous for sleep monitoring than a conventional watch-type device.
- FIG. 8 illustrates an exemplary result screen in which a sleep state is created and visualized in time series according to an embodiment.
- FIG 9 is an exemplary screen showing examples of sleep quality and sleep disorders among sleep monitoring results according to an embodiment.
- FIG. 10 is a diagram for explaining a sensor used when a sleep monitoring device according to an embodiment monitors various sleep disorders together with an earbud device.
- a sleep monitoring device 101 may be an electronic device.
- Electronic devices as long as they perform a sleep monitoring function, include all general-purpose computing devices implemented by system-on-chip hardware and/or application software.
- the electronic device includes a smartphone, a tablet personal computer (tablet PC), a mobile phone, a video phone, an e-book reader, a desktop personal computer (PC), and a laptop.
- PC laptop personal computer
- netbook computer PDA (personal digital assistant), PMP (portable multimedia player), MP3 player
- mobile medical device camera, or wearable device
- wearable device e.g. It may include at least one of a head-mounted-device (HMD) such as electronic glasses, an electronic clothing, an electronic bracelet, an electronic necklace, an electronic appcessory, an electronic tattoo, or a smart watch).
- HMD head-mounted-device
- the electronic device may include various medical devices (eg, magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), computed tomography (CT), a camera, an ultrasound device, etc.), a navigation device, a GPS receiver ( global positioning system receiver), event data recorder (EDR), flight data recorder (FDR), automotive infotainment devices, marine electronic equipment (e.g. marine navigation system and gyrocompass), avionics, security It may include at least one of a device, a vehicle head unit, an industrial or household robot, an automatic teller's machine (ATM) of a financial institution, or a point of sales (POS) of a store.
- MRA magnetic resonance angiography
- MRI magnetic resonance imaging
- CT computed tomography
- a camera e.g., a camera, an ultrasound device, etc.
- a navigation device e.g., a GPS receiver ( global positioning system receiver), event data recorder (EDR), flight data recorder (FDR), automotive infota
- the electronic device may include a piece of furniture or a building/structure including a sleep monitoring function, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g. : Water, electricity, gas, or radio wave measuring devices, etc.) may include at least one.
- An electronic device according to various embodiments of the present disclosure may be one or a combination of more than one of the various devices described above.
- an electronic device according to various embodiments of the present disclosure may be a flexible device.
- the types of electronic devices themselves vary, and it is obvious to those skilled in the art that the types and main uses (other than the sleep monitoring function) of the electronic devices are not limited to the above.
- specific embodiments will be described with reference to the drawings.
- FIG. 1 shows a sleep monitoring device 101 according to one embodiment.
- the sleep monitoring device 101 may be the various types of electronic devices described above, and is connected to the earbud-type biometric information measuring device 100 through the communication interface 102 to receive and control the sensed data. Commands can be exchanged.
- the earbud device 100 is worn on the user's ear as an in-ear type, and the user carries the sleep monitoring device 101 separately.
- a communication method through the communication interface 102 may be various, such as Bluetooth, ZigBee, Wi-Fi, Wi-Fi-Direct, connection through a cellular network, and NFC.
- the sleep monitoring device 101 is embedded in the earbud device 100 in other embodiments without being limited to this example. Due to the high integration and high performance of the system on chip, the processor 103 and the memory 104 can be packaged together in the earbud device 100 worn on the user's ear. In this case, the communication interface 102 The monitoring result of the monitoring device 101 may be transmitted to another electronic device (not shown) so that the user may check the sleep monitoring result through the other electronic device. Therefore, even if an embodiment in which the sleep monitoring device 101 is provided as a separate device from the earbud device 100 is described throughout this specification, it should not be construed as being limited to these examples.
- the structure and function of the earbud device 100 will be described later in more detail with reference to FIGS. 2A and 2B, and the structure and operation of the sleep monitoring device 101 will be described here.
- the sleep monitoring device 101 includes a communication interface 102 and a processor 103 .
- the communication interface 102 may be a communication chipset or modem enabling communication in the various methods described above. Preferably, it is a communication chipset of a wireless communication method.
- the processor 103 may be a general-purpose processor such as a central processing unit (CPU) and an auxiliary processing unit as well as dedicated hardware of a system-on-a-chip (SoC) method.
- SoC system-on-a-chip
- APUs Application processing units
- operations to be described later can be performed by firmware or OS (Operating System) and application software (APP), and the application software is installed using the memory 104 .
- OS Operating System
- APP application software
- the processor 103 uses the user's EEG signal measured by the EEG measuring unit of the earbud device 100 worn on the user's ear to measure the user's brain wave during sleep (sleep wave, 'sleep wave'). wave') and EEG during wakefulness ('awake wave').
- This identification can be understood as a selection or presumption of one of two things.
- the type and state of the user's EEG waveform may be classified according to waveforms such as alpha wave, beta wave, and theta wave in a manner known in the conventional sleep neuroscience field. As is known, the sleep state can be divided into REM, sleep level 1, sleep level 3, etc.
- the processor 103 can subdivide them, but in this embodiment, sleep Either the waveform corresponds to or the waveform corresponds to awakening.
- the processor 103 is a sensor measured by an activity sensor included in the earbud device 100. Through data (data from activity sensor) - the sensor data is time-synchronized with the EEG signal -, the user's posture is either a sleeping posture or an awake posture with the head raised. do.
- An awake posture refers to a posture in which a user sits or stands, and is clearly distinguished from a posture in which the user lies with the head on the floor.
- the 'activity sensor' referred to throughout this specification may include several individual sensors, such as a gyro sensor, an accelerometer sensor, or a composite sensor with two or more sensor fusions, It is included in the earbud device 100 and sends a sensed value to the processor 103, and the processor 103 determines whether the user is holding his head up or resting his head on the floor or a pillow through the sensed value.
- the processor 103 monitors the user's sleep state over time through the EEG signal and the activity sensor signal measured on the side of the earbud device 100, and time-sequentially monitors the user's sleep state as one of the above four Continue to categorize.
- the user's posture is considered together with the user's EEG, and since the earbud device 100 is inserted into the user's ear, the sleep state in a conventional watch-type wearable device Compared to checking, it is possible to accurately classify the user's state by comparing whether the user is lying down with whether the user is asleep. This will be described later in more detail with reference to FIG. 7 .
- the earbud device 100 is inserted and worn in the ear, and the earbud device 100 according to the embodiment has an electrical contact between the signal electrode used for EEG measurement and the user's skin as its structural peculiarity Since this is maintained stably, the success rate of all-night sleep monitoring increases, and thus, according to embodiments, accurate, reproducible, and stable sleep state monitoring is possible.
- the processor 103 continues the user's sleeping state during a predetermined time interval between a first time point corresponding to the user's elevation and a second time point corresponding to the user's appearance. is classified as one of the plurality of states (SS, AA, SA, AS, etc.).
- the first point of view which is the elevation point of view, may be input by the user through a user interface (User Interface, not shown) of the sleep monitoring device 101, or the device may automatically identify it.
- the sleep posture when the user lies down to sleep and the sleep posture lasts for a certain amount of time or longer, or even identifies sleep waves of a certain length or more for the first time after the continuation of the lying posture.
- a case may be determined as the first point of time.
- the device automatically identifies it. For example, but not limited to, while the user's sleep state is monitored by the identification of the elevational state, the user's awakening EEG is sensed for a certain period of time, or while the awake EEG continues, the awake posture The case identified up to may be determined as the second point of time, which is the release point.
- the theoretically ideal result is that the user lies down to sleep and enters the SA state (relatively briefly, for example, a few minutes), followed by the SA state, and then the user falls asleep while lying down and the SS state lasts for a long time ( If you sleep for 7 hours, it continues for 7 hours), and after the user wakes up while lying down and the state changes to SA, the user wakes up within a relatively short time, the state becomes AA, and the AA state is maintained in a natural sequence.
- Embodiments make it possible to observe how different this ideal sequence differs from the actual user's sequence. This observation can be said to be the beginning of improving the quality of sleep, because only observation is necessary for analysis, and only after analysis is improvement or necessary treatment possible.
- the processor 103 determines the sleep state of the user at a predetermined period (eg, every 30 seconds, every 1 minute, every 5 minutes, or every 10 minutes) during the time interval. It is classified as one of the dog states (SS, AA, AS, SA).
- the classified result may be sequential visual information (visualized information or infographics) in which the sleep state of the user is sequentially listed for each determination period along with the passage of time. Details on this will be described later with reference to FIGS. 8 and 9 .
- the processor 103 determines the 'SS' phase to sleep. level can also be considered. This is because it is possible to set different settings for when to fall asleep medically and depending on the field of use of information. Therefore, in some embodiments, while the processor 103 of the sleep monitoring device 101 analyzes the EEG signal of the earbud device 100 and determines the sleep level according to the waveform, it is not REM sleep but non-REM sleep. When entering the second stage (non-REM level 2), it may be determined as the 'SS' stage where sleep begins after lying down.
- the sleep level determined according to the measured EEG is REM sleep or non-REM level 1 sleep, it can be determined as the 'SS' state. This is because the change in sleep state across REM sleep and non-REM level 1 is natural according to the cycle during sleep.
- the processor 103 since the user's sleep state is continuously determined for a relatively long sleep time, for example, about 7 hours, it is important for the processor 103 to remove outliers or noise of the temporary signal. . By removing the outliers in this way, stability and reliability of the determination result can be increased. This process is possible in several embodiments.
- the processor 103 applies a smoothing filter when classifying the sleep state of the user as one of the plurality of states at a predetermined period, for example, every 5 or 10 minutes. For example, through the user's EEG signal within a specific period of 10 minutes, the user's brain wave becomes an alternative between brain wave during sleep and brain wave during wakefulness. It can be removed through a smoothing filter.
- the value of the sensor data measured by the activity sensor within a specific period of 10 minutes will continue to be divided into a lying posture and a raising posture, and outliers can be removed from this value in a similar way.
- the removal of these outliers should be established as an optimal standard through various clinical experiments.
- the body sits up once in a while without waking up while sleeping, then lies down again within a few seconds and continues to sleep, and this phenomenon causes the processor 103 to briefly As it can be important to identify and report these as disruptive behaviors during the user's sleep, rather than eliminate them as outliers.
- determining the dominant state after segmentation as a representative value As in voting, when a plurality of different values coexist within a section, the state value with the largest number is selected as the representative value.
- the processor 103 divides one time period interval (eg, 10 minutes) into smaller sub-period time segments (eg, 1 minute), and determines the sleep state for each sub-period time segment. After the determination, the most dominant sleep state in the entire individual time period interval (10 minutes) - that is, the sleep state that appeared more frequently - is determined as the representative state of the entire individual time interval.
- the processor determines the sleep state by using the EEG signal and the sensor data measured by the activity sensor together, SS, AA , SA, or AS, and then selecting a representative value.
- the removal of such outliers in individual time intervals or detailed time units may be performed by processing using temporal locality. For example, by referring to one or more processing results immediately before or after, a specific state that can be determined that the user's sleep state is not actually changed is ignored.
- the removal of outliers is possible in several ways.
- the sleep monitoring device may evaluate sleep quality for the entire monitored time interval after the sleep monitoring process is finished.
- the processor provides a sleep quality index corresponding to a ratio of a sum of sections classified as a brain wave state (SS) while lying down with respect to all of the time sections according to the classification result.
- SS brain wave state
- the ratio of SUM(SSn), which is the sum of the lengths of EEG during sleep (SS) in a lying position to the length of total sleep time T may be evaluated as the overall sleep quality. Lying down to sleep and standing up (AA for awake state, AS for not awake state) and lying but awake state (SA) are not good for overall sleep efficiency, so these states are If it is absent or short, the sleep quality index may be high. An example of this result is shown in FIG. 9 .
- sleep quality may be determined in various ways. Accordingly, the sleep habit of the user may be analyzed by evaluating in more detail whether the cause of the drop in the sleep quality index is the 'AA' state, the 'AS' state, or the 'SA' state. For example, if the sleep EEG state or 'AS' state, which is a state of waking up, is longer than a certain length, sleep disorder behaviors such as waking up during sleep or even walking around may be identified. In addition, if 'SA', which is a state of waking up but still lying down during the entire evaluation time, appears for more than a certain period, what pattern and how long it lasts, or when the 'SA' state occurs, etc. A sleep disorder related to may be suspected, and the user may consult an expert such as a doctor regarding this.
- the sleep evaluation continues and is regarded as one sleep, and only the occurrence of the corresponding 'AA' state can be included in the evaluation. In this case, it can also appear when you wake up for a while and go to the bathroom, and if this case is repeated, it can be used as a basis for suspecting sleep disorders or urinary disorders.
- 'SS' a state of lying down to sleep
- 'AS' a stage in which the user sits up or sits up while not waking up
- the sleep monitoring device 101 together with the earbud device 100 accurately and conveniently detects these various sleep disorders. It should be understood that it contributes to helping to discover
- an activity sensor may include several individual sensors, such as a gyro sensor, an accelerometer sensor, or composite sensors with a fusion of two or more sensors.
- the sensor data measured by the activity sensor may include: a) a direction sensing value for determining whether the user's head is upright or lying down while the earbud device 100 is worn on the ear; and b) an acceleration sensing value for determining whether the user moves at a certain level or more while wearing the earbud device on the ear.
- the processor may at least temporarily suspend classification of the sleep state when the acceleration sensing value indicates a state in which the motion is greater than or equal to the predetermined level.
- the earbud device may provide a microphone listening result for detecting the user's snoring during sleep. It can proceed and, if necessary, can also be recorded. Even at this time, it is necessary to distinguish between the user's own snoring and the snoring of others sleeping next to him.
- the processor according to an embodiment further receives the sound heard through the microphone of the earbud device, and when the sound corresponds to snoring, the processor determines whether the snoring of the user is the snoring of the user or other people around by using the acceleration sensing value. of snoring.
- a certain level of vibration is sensed together with the snoring sound, it is the user's own snoring, and if the snoring sound is heard but the vibration is below a certain standard, it is the snoring of another person sleeping next to him. Therefore, it may be ignored in the evaluation of the sleep state of the monitoring target user sleeping while wearing the earbud device.
- FIGS. 2A and 2B show front and back views, respectively, of an earbud device 100 according to one embodiment.
- the earbud device 100 is a wearable device on the user's ear.
- the earbud device 100 measures biometric information such as the user's EEG, posture and movement, and blood oxygen saturation (SpO2).
- biometric information such as the user's EEG, posture and movement, and blood oxygen saturation (SpO2).
- sleep stages such as REM sleep, sleep stage 1, stage 2, and stage 3 can be distinguished.
- brain wave signals and identifying dominant waveforms such as alpha waves and beta waves, you can find out at what level you fall asleep (level at the time of awakening), how the sleep stages are changing while you sleep, how long each stage lasts, and how long each stage lasts. You can monitor information such as how many cycles the change in waveform passes through.
- sleep disorders experienced during sleep such as sleep apnea
- appropriate feedback can be provided at this time.
- Feedback is, for example, alerting the human ear through sound, changing the sleep stage to another stage, or giving information about sleep disorders through a linked application after waking up.
- the electronic device 100 includes a blood oxygen saturation measuring unit 110 that measures the user's blood oxygen saturation (SpO2) by hanging on the user's earlobe while being fixed and wrapped around the user's earlobe. and a reference electrode contacting the user's skin is placed here.
- SpO2 blood oxygen saturation
- a reference electrode contacting the user's skin is placed here.
- the first part 110 of the blood oxygen saturation measurement unit includes an LED light source 111 and a light receiving unit (s) 112, and the second part 120 distinguished from these parts includes, but is not limited to, A fixing means such as a magnet is included.
- a fixing means such as a magnet is included.
- the first part 110 and the second part 120 face each other and are attached by magnetic force, so that the blood oxygen saturation measurement unit and the reference electrode for EEG measurement are maintained in contact with the earlobe.
- a portion between the first part 110 and the second part 120 may be a bridge made of a flexible material.
- the position of the light receiver(s) 112 is the first part 110 is shown, it is also possible to position it on the side of the second part 120.
- the bridge itself between the first part 110 and the second part 120 of the blood oxygen saturation measuring unit may be an elastic material having a 'U'-shaped curve.
- the first part and the second part may hang on the ear lobe while opposing each other on both sides of the ear lobe by the elasticity of the elastic bridge with the ear lobe interposed therebetween. It becomes a type that is inserted into the earlobe and fixed.
- the connecting bridge since the connecting bridge has a hinge structure, the first part 110 and the second part 120 can be opened and closed while being folded and unfolded by such a structure, and can be fixed to the ear lobe.
- Other connecting bridge structures are also possible and are not construed as being limited to some embodiments.
- the ear tip 130 of the earbud device 100 is inserted into the neck of a user's ear canal and has at least one in-ear electrode in contact with the skin in the ear canal.
- the ear tip 130 also serves as a part that outputs sound like a normal in-ear type earbud earphone. Since it is inserted into the neck of the ear canal and closely adheres to the inner wall of the user's ear canal, the ear tip 130 becomes an excellent signal electrode that maintains electrically continuous electrical contact even during the user's sleep.
- the earbud device 100 supports the ear tip 130 by pushing it into the user's ear canal so that it does not fall out, and includes an ear wing 140 inserted and fixed inside the user's auricle.
- the wing structure of the ear wing 140 is in the form of a loop.
- the wing structure includes an elastic structure 141 provided to correspond to the user's various sizes and structures of the auricle.
- the elastic structure 141 includes a plurality of slits and has relatively higher flexibility and/or elasticity than other parts. High flexibility and / or elasticity means that it is deformed more than other parts in the wing structure, such as the part 142 where the ear wing electrode is disposed, by an external force - such as a condensing force or a twisting force - and then restored again when the external force weakens.
- the wing structure of the ear wing 140 may be selected from materials such as elastomer, rubber, silicone and other polymers (polymers), and the elastic structure 141 partially included in the wing structure is different from the wing. It is processed or molded to be distinguished from the part in shape, but may be the same in material. Of course, it is also possible that there is a difference in material.
- the elastic structure 141 is deformed by an external force so that the wing structure enters the inside of the auricle, and when the external force is relatively weak, the wing structure is restored so that the wing structure is inserted and supported inside the auricle While doing so, the at least one ear wing electrode adheres to the contact surface.
- the ear wing electrode adheres to the inner skin of the user's auricle, and thus is advantageous for electrical contact for measuring the EEG signal.
- the portion where the signal electrodes for EEG measurement are disposed ( 142 in FIG. 2B ) maintains electrical contact even while the user sleeps.
- signal electrodes are disposed on the ear tip 130 and part 142 of the ear wing 140, and a reference electrode is disposed on the blood oxygen saturation measurement unit 110 that contacts the user's ear lobe, so that the EEG measurement unit 150 collects the user's electroencephalogram signal.
- circuits such as a control unit, flash memory, and various amplifiers are included on a PCB or FPCB, and a sound driver outputting sound to the eartip 130, an external device (eg, the sleep of FIG. 1)
- a communication chipset and an antenna communicating with the monitoring device 101) may be disposed.
- an activity sensor is included in the housing together with the EEG measurement unit 150 .
- this activity sensor may include several individual sensors, such as a gyro sensor, an accelerometer sensor, or composite sensors with a fusion of two or more sensors.
- the sensing result data of the activity sensor is transmitted to the processor ( 103 in FIG. 1 ) to measure the posture of the user whether lying down, sitting or standing. According to embodiments, the measured posture is considered together with whether the user sleeps and/or the sleep level measured through EEG.
- At least one ear wing electrode(s) 210 and 220 are disposed on a side surface of the ear wing 140 in contact with the inside of the user's auricle.
- the electrodes 210 and 220 also serve as signal electrodes for the EEG measuring unit 150 to measure the EEG.
- the electrodes 210 and 220 may be a conductive metal material, but may also be a conductive polymer or other known material that minimizes the formation of a surface oxide layer.
- the electrodes 210 and 220 are pushed more strongly to the inner wall of the user's auricle to make contact and maintain contact force, maintaining electrical connection even if the user tosses and turns in sleep.
- the structure of the device 100 is designed to be very advantageous for measuring biometric information because the inner wall of the auricle not only guarantees the continuity of EEG measurement in terms of performance, but also becomes an excellent measurement site in terms of contact resistance, like the inner wall of the outer ear canal.
- the kernel 131 of the ear tip 130 serves as a sound output unit of an in-ear type earphone, and can output appropriate alarm sounds, voice information and other sounds when the device 100 performs sleep monitoring and user guidance.
- the ear tip 130 itself may be a flexible conductor such as conductive rubber or other conductive polymer material, and in this case, the surface layer of the ear tip 130 may be an ear tip electrode. However, it is not limited to this particular embodiment and other embodiments are possible.
- the skin of the ear tip 130 itself may be a flexible electrode made of conductive rubber or conductive polymer, but it is also possible that the ear tip electrode (not shown) is provided separately. If the ear tip electrode is provided separately, parts other than the electrode may be made of an insulating material such as insulating silicone, insulating rubber, or insulating polymer.
- a charging terminal 240 used to charge the battery of the earbud device 100 is shown.
- FIG. 3 is a diagram for explaining a process of sleep monitoring while sleeping while wearing the earbud device 100 according to an embodiment.
- the earbud device 100 may be provided in a type worn on the left ear and a type worn on the right ear, and in general, a user may select one of these to purchase and wear.
- the blood oxygen saturation measuring unit is closely attached to and fixed to the user's ear lobe, the ear tip is inserted into the neck of the user's external auditory canal, and the ear wing is inserted into and fixed to the inside of the auricle while the user goes to bed. Due to this structure, since the ear tip electrode(s) and the ear wing electrode(s) maintain stable electrical contact as signal electrodes throughout sleep, stable sleep monitoring is possible while the user lies down and sleeps, as shown in the figure. As described in FIG. 1, the sleep monitoring device 101 can also be implemented in a smartphone that is connected by communication around the user.
- FIG. 4 is a view for explaining an earbud device 400 having a forehead extension electrode according to another embodiment, and FIG. 5 shows a state in which the device is worn and sleep monitoring is performed.
- the difference from the basic earbud device 100 is the existence of the extension electrodes 420 and 430 and the connection line 410 for electrical connection with the extension electrodes.
- the connection line 410 is connected to the EEG measurement unit through the connection unit 412 of the first part 110 of the blood oxygen saturation measurement unit.
- the connecting portion 412 is a connector providing electrical connection, and various methods are possible in its shape and fastening structure.
- the extension electrodes 420 and 430 may be electrodes attached to the user's temple and forehead, respectively.
- the electrode 420 is attached to the temple in the form of a patch electrode, and the electrode 430 is attached to the forehead in the form of a patch electrode.
- the extension electrodes 420 and 430 may be disposable or consumables that are supposed to be replaced after being used several times.
- connection line 410 may be provided with folding structures 411 and 421 to adaptively respond to the size and shape of a person's head. Due to this folding structure, it is possible to respond to a person with a large head or a short head while partially unfolding the folding structure, providing comfort to the wearer, and preventing the extension electrodes 420 and 430 from being pulled apart during sleep. Provides the ability to stick well.
- FIG. 5 illustrates sleep monitoring while a user wears an electronic device having an earbud extension electrode according to the embodiment of FIG. 4 .
- FIG. 6 illustrates a process of classifying a sleep state according to an embodiment
- FIG. 7 is a diagram for explaining why an earbud-type device is more advantageous than a conventional watch-type device for sleep monitoring.
- the first row of the table is a result of the processor 103 receiving data from the activity sensor dividing the user's posture into a lying posture (or sleeping posture) and an active posture (or awake posture).
- the second row of the table is the result of the processor 103 receiving the data measured by the EEG measurement unit dividing the user's EEG state into a sleep wave and an awake wave.
- a total of four sleep states were presented by combining these two posture types and two EEG types.
- the user's posture is considered together with the user's EEG, and since this posture is inserted into the user's ear as the earbud device 100, compared to checking the sleep state in a conventional watch-type wearable device It is possible to distinguish an accurate user state by comparing whether the user is lying down or not with whether the user is asleep.
- the above two usage cases 710 and 720 are cases in which the user's sleep is determined when the earbud device 100 according to the embodiment of the present invention is worn. Since the earbud device 100 is worn on the user's ear and the activity sensor in the earbud device estimates the user's posture, even if the user lies on his or her side, the sleep monitoring device 101 can accurately determine that the user is lying down.
- the wearable device worn on the wrist in the form of a watch estimates the user's posture, the posture of the wrist when the user is lying down (lower left) and the wrist when the user is sitting up (lower right) Since the pose of the user is the same, it is not possible to accurately determine the user's posture.
- estimating the user's posture through the earbud device 100 worn on the ears is greatly helpful in estimating the accurate user's posture in the sleep monitoring process.
- it is optimized for sleep monitoring in many aspects, such as wearability, stability, and possibility of maintaining electrical contact, compared to other types such as hanging on the ear or covering the ear in the form of a hook.
- FIG. 8 illustrates an exemplary result screen in which a sleep state is created and visualized in time series according to an embodiment.
- the processor 103 continuously sets the user's sleep state to SS, AA, SA, It was classified as one of AS. And the results were visualized and expressed along with the flow of time as shown.
- one section is expressed as 5 minutes for convenience of presentation and description of the drawings, it should not be overlooked that the length of these individual sections can be set to other lengths such as 30 seconds or 1 minute.
- the 5-minute section around 10:10 is the last section in which the user was raising his head, and at 10:15 the user lays his head down for a certain period of time (ie, more than 10 minutes), so from 10:15
- the sleep state was monitored until the time when the user woke up and woke up (approximately 06:45).
- the first 'SS' step at 10:25 which is the first change from the 'SA' state to the 'SS' step, when the user lies down and falls asleep, sleep monitoring device
- sleep monitoring device Among the sleep levels determined by analyzing the EEG signal of the earbud device 100 (101), it may be when entering the second non-REM sleep stage (non-REM level 2) rather than REM sleep.
- non-REM level 2 the second non-REM sleep stage
- FIG. 9 is an exemplary screen that presents examples of sleep quality and sleep disorders among sleep monitoring results according to an embodiment, which can be output on the sleep monitoring device 101 or another display connected thereto.
- the sleep monitoring device 9101 may evaluate the sleep quality for the entire monitored time period (eg, 7 hours from going to bed to going to bed).
- the processor provides a sleep quality index corresponding to a ratio of a sum of sections classified as a brain wave state (SS) while lying down with respect to all of the time sections according to the classification result.
- a sleep quality index corresponding to a ratio of a sum of sections classified as a brain wave state (SS) while lying down with respect to all of the time sections according to the classification result.
- the total length of sleep time for example, the sum of the length of time of the brain wave state (SS) during sleep while lying down for 7 hours is about 5 hours and 15 minutes
- the overall sleep quality is 75 points can be evaluated. Lying down to sleep and standing up (AA for awake state, AS for not awake state) and lying but awake state (SA) are not good for overall sleep efficiency, so these states are If it is absent or short, the sleep quality index may be high.
- level of sleep REM, Level 1, Level 2, Level 3, etc.
- REM level of sleep
- a pre-designed algorithm or an artificial intelligence server accessed through a network recommends more advanced diagnosis and analysis, unusual matters or suspected diseases of concern, and, if necessary, recommends contact with experts such as doctors. It is also possible.
- FIG. 10 is a diagram for explaining sensors used when the sleep monitoring device 101 and the earbud device 100 monitor various sleep disorders other than those described above.
- the activity sensor measures vibration
- the oxygen saturation sensor measures oxygen saturation
- the microphone records snoring in the snoring section.
- the sleep monitoring device 101 may provide necessary guidance or alarm to the user through the earbud device 100 as well as monitoring sleep. may be stimulating.
- the advantage of this part is that in the case of a snoring alarm through a smartphone app, not only the person who snores but also other people sleeping next to him may be disturbed by the alarm, but according to the present embodiment, This means that only the person who wears the bird device 100 in his or her ears can make an effort to listen to the alarm and change the sleep state for a while.
- the user's movement and head vibration are also measured through the activity sensor, it may be possible to distinguish whether the snoring sound input through the microphone is the user's own snoring or the snoring of another person sleeping next to him. there is. Illustratively, but not limitedly, if a certain level of vibration is sensed together with the snoring sound, it is the user's own snoring, and if the snoring sound is heard but the vibration is below a certain standard, it is the snoring of another person sleeping next to him. Therefore, it may be ignored in the evaluation of the sleep state of the monitoring target user sleeping while wearing the earbud device. The case of sleep apnea is also shown.
- the earbud device 100 and the sleep monitoring device 101 are highly utilized.
- devices and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), It may be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions.
- a processing device may run an operating system (OS) and one or more software applications running on the operating system.
- a processing device may also access, store, manipulate, process, and generate data in response to execution of software.
- the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that it can include.
- a processing device may include a plurality of processors or a processor and a controller. Other processing configurations are also possible, such as parallel processors.
- Software may include a computer program, code, instructions, or a combination of one or more of the foregoing, which configures a processing device to operate as desired or processes independently or collectively.
- the device can be commanded.
- Software and/or data may be any tangible machine, component, physical device, virtual equipment, computer storage medium or device, intended to be interpreted by or provide instructions or data to a processing device. , or may be permanently or temporarily embodied in a transmitted signal wave.
- Software may be distributed on networked computer systems and stored or executed in a distributed manner.
- Software and data may be stored on one or more computer readable media.
- the method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium.
- the computer readable medium may include program instructions, data files, data structures, etc. alone or in combination.
- Program commands recorded on the medium may be specially designed and configured for the embodiment or may be known and usable to those skilled in computer software.
- Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks.
- - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like.
- program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.
- the hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- Medical Informatics (AREA)
- Biomedical Technology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Otolaryngology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Physiology (AREA)
- Physical Education & Sports Medicine (AREA)
- Psychiatry (AREA)
- Psychology (AREA)
- Anesthesiology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Rheumatology (AREA)
- Pulmonology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
Claims (10)
- 사용자 수면 모니터링 장치에 있어서, 상기 수면 모니터링 장치는:통신 인터페이스; 및프로세서를 포함하고,상기 프로세서는, 상기 사용자의 귀에 착용되는 이어버드 장치의 EEG 측정부가 측정한 EEG 신호를 이용하여 상기 사용자의 뇌파를 수면중 뇌파와 각성중 뇌파 중 어느 것에 해당하는지 구분하고, 상기 이어버드 장치에 함께 포함되는 활동 센서가 측정한 센서 데이터 - 상기 센서 데이터는 상기 EEG 신호와 시간 동기 된 것임 - 와 상기 구분한 결과를 비교하여 사용자의 수면 상태를 복수 개의 카테고리 중 어느 하나로 분류하는, 수면 모니터링 장치.
- 제1항에 있어서,상기 프로세서는, 상기 활동 센서가 측정한 상기 센서 데이터를 활동 자세와 누운 자세 중 어느 것에 해당하는지 구분하고, 상기 사용자의 수면 상태를:1) 누운자세이면서 수면중 뇌파인 상태(SS);2) 활동자세이면서 각성 뇌파인 상태(AA);3) 누운자세이면서 각성 뇌파인 상태(SA); 및4) 활동자세이면서 수면중 뇌파인 상태(AS)를 포함하는 복수 개의 상태 중 어느 하나로 분류하는, 수면 모니터링 장치.
- 제2항에 있어서,상기 프로세서는, 상기 사용자의 입면에 대응하는 제1 시점과 상기 사용자의 출면에 대응하는 제2 시점 사이의 시간 구간 동안 지속적으로 상기 사용자의 수면 상태를 상기 복수 개의 상태 중 어느 하나로 분류하여, 시간에 따른 상기 상태 분류의 결과 시퀀스를 상기 사용자에 대한 수면 모니터링 결과로 제공하는, 수면 모니터링 장치.
- 제3항에 있어서,상기 프로세서는, 상기 시간 구간 동안 미리 지정된 주기 마다 상기 사용자의 수면 상태를 상기 복수 개의 상태 중 어느 하나로 분류하는, 수면 모니터링 장치.
- 제3항에 있어서,상기 프로세서는, 상기 미리 지정된 주기 마다 상기 사용자의 수면 상태를 상기 복수 개의 상태 중 어느 하나로 분류하는 경우, 하나의 주기 내의 상기 EEG 신호 및 상기 활동 센서가 측정한 센서 데이터 중 적어도 하나에 대해 아웃라이어를 제거하도록 스무딩 필터를 적용하여 상기 하나의 주기에 대응하는 상기 사용자의 수면 상태를 상기 복수 개의 상태 중 어느 하나로 결정하는, 수면 모니터링 장치.
- 제3항에 있어서,상기 프로세서는, 상기 미리 지정된 주기 마다 상기 사용자의 수면 상태를 상기 복수 개의 상태 중 어느 하나로 분류하는 경우, 하나의 주기를 복수 개의 시간 세그먼트로 나누고, 상기 복수 개의 시간 세그먼트 각각에 대해 상기 EEG 신호 및 상기 활동 센서가 측정한 센서 데이터를 이용하여 각 시간 세그먼트에 대응하는 상기 사용자의 수면 상태를 상기 복수 개의 상태 중 어느 하나로 각각 결정하고, 상기 하나의 주기에 대해 다수를 이루는 우세 상태를 상기 하나의 주기에 대한 대표 상태로 결정하는, 수면 모니터링 장치.
- 제3항에 있어서,상기 프로세서는, 상기 분류 결과에 따라, 상기 시간 구간의 전체에 대한 상기 누운자세이면서 수면중 뇌파인 상태(SS)로 분류된 구간의 합의 비율에 대응하는 수면 품질 인덱스를 제공하는, 수면 모니터링 장치.
- 제2항에 있어서,상기 프로세서는, 상기 분류 시에:상기 활동자세이면서 각성 뇌파인 상태(AA)에서 상기 누운자세이면서 각성 뇌파인 상태(SA)로 변환된 후, 상기 누운자세이면서 각성 뇌파인 상태(SA)에서 상기 누운자세이면서 수면중 뇌파인 상태(SS)로 첫 변경하는 경우는, 상기 EEG 신호가 논램(non-REM) 단계 2 수면 상태인 경우에 상기 사용자의 수면 상태를 상기 누운자세이면서 수면중 뇌파인 상태(SS)로 분류하는, 수면 모니터링 장치.
- 제1항에 있어서,상기 활동 센서가 측정한 센서 데이터는:상기 사용자가 상기 이어버드 장치를 귀에 착용한 상태에서 머리를 세운 것인지, 머리를 뉘인 것인지 판단하는 방향 센싱 값; 및상기 사용자가 상기 이어버드 장치를 귀에 착용한 상태에서 일정 수준 이상으로 움직이는 것인지 여부를 판단하는 가속도 센싱 값을 포함하고, 상기 프로세서는, 가속도 센싱 값이 상기 일정 수준 이상으로 움직이는 상태를 가리키는 경우 상기 분류를 보류하는, 수면 모니터링 장치.
- 제9항에 있어서,상기 이어버드 장치의 마이크를 통해 청음되는 사운드를 더 입력받아, 상기 사운드가 코골이에 해당하는 경우, 상기 가속도 센싱 값을 이용하여 상기 사용자의 코골이인지 주변 타인의 코골이인지를 구분하는, 수면 모니터링 장치.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22892267.0A EP4431007A4 (en) | 2021-11-12 | 2022-12-12 | SLEEP MONITORING DEVICE AND METHOD OF OPERATION THEREOF |
| US18/709,753 US20250000450A1 (en) | 2021-11-12 | 2022-12-12 | Sleep monitoring device and operation method therefor |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20210155975 | 2021-11-12 | ||
| KR10-2021-0155975 | 2021-11-12 | ||
| KR1020220063458A KR102906066B1 (ko) | 2022-05-24 | 2022-05-24 | 생체정보 측정 장치 |
| KR10-2022-0063458 | 2022-05-24 | ||
| KR1020220087045A KR20230069804A (ko) | 2021-11-12 | 2022-07-14 | 수면 모니터링 장치 및 그 동작 방법 |
| KR10-2022-0087045 | 2022-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023084502A1 true WO2023084502A1 (ko) | 2023-05-19 |
Family
ID=86335174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2022/062049 Ceased WO2023084502A1 (ko) | 2021-11-12 | 2022-12-12 | 수면 모니터링 장치 및 그 동작 방법 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20250000450A1 (ko) |
| EP (1) | EP4431007A4 (ko) |
| WO (1) | WO2023084502A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119257545A (zh) * | 2024-03-27 | 2025-01-07 | 荣耀终端有限公司 | 一种睡眠状态的检测方法及可穿戴设备 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160058366A1 (en) | 2014-08-26 | 2016-03-03 | Samsung Electronics Co., Ltd. | Electronic device and sleep monitoring method in electronic device |
| US20190038184A1 (en) | 2017-08-04 | 2019-02-07 | Samsung Electronics Co., Ltd. | Method and an electronic device for tracking a user activity |
| US20190282119A1 (en) * | 2016-12-09 | 2019-09-19 | T&W Engineering A/S | Generic ear device with electrodes |
| KR102046515B1 (ko) | 2017-03-06 | 2019-11-20 | 주식회사 아이메디신 | 넥밴드 타입 헬스케어 서비스 시스템 및 방법 |
| US20200085369A1 (en) * | 2016-08-05 | 2020-03-19 | The Regents Of The University Of Colordo, A Body Corporate | In-ear sensing systems and methods for biological signal monitoring |
| KR20200033522A (ko) * | 2018-09-20 | 2020-03-30 | 링크페이스 주식회사 | 수면 및 각성 유도 방법, 장치 및 컴퓨터 프로그램 |
| KR102102421B1 (ko) | 2018-01-09 | 2020-04-20 | 광운대학교 산학협력단 | 뇌파 측정용 이어폰 및 이를 이용한 졸음운전 감지 시스템 |
| KR20210075313A (ko) * | 2019-12-13 | 2021-06-23 | 주식회사 재영소프트 | 모션 센서와 연동되는 수면 무호흡증 및 코골이 증상 개선용 움직임 유발 주파수를 생성하는 방법 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7572225B2 (en) * | 2003-09-18 | 2009-08-11 | Cardiac Pacemakers, Inc. | Sleep logbook |
| US20210169417A1 (en) * | 2016-01-06 | 2021-06-10 | David Burton | Mobile wearable monitoring systems |
| KR102100120B1 (ko) * | 2018-06-29 | 2020-04-13 | 링크페이스 주식회사 | 생체 신호를 모니터링하는 방법, 장치 및 컴퓨터 프로그램 |
-
2022
- 2022-12-12 EP EP22892267.0A patent/EP4431007A4/en active Pending
- 2022-12-12 WO PCT/IB2022/062049 patent/WO2023084502A1/ko not_active Ceased
- 2022-12-12 US US18/709,753 patent/US20250000450A1/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160058366A1 (en) | 2014-08-26 | 2016-03-03 | Samsung Electronics Co., Ltd. | Electronic device and sleep monitoring method in electronic device |
| US20200085369A1 (en) * | 2016-08-05 | 2020-03-19 | The Regents Of The University Of Colordo, A Body Corporate | In-ear sensing systems and methods for biological signal monitoring |
| US20190282119A1 (en) * | 2016-12-09 | 2019-09-19 | T&W Engineering A/S | Generic ear device with electrodes |
| KR102046515B1 (ko) | 2017-03-06 | 2019-11-20 | 주식회사 아이메디신 | 넥밴드 타입 헬스케어 서비스 시스템 및 방법 |
| US20190038184A1 (en) | 2017-08-04 | 2019-02-07 | Samsung Electronics Co., Ltd. | Method and an electronic device for tracking a user activity |
| KR102102421B1 (ko) | 2018-01-09 | 2020-04-20 | 광운대학교 산학협력단 | 뇌파 측정용 이어폰 및 이를 이용한 졸음운전 감지 시스템 |
| KR20200033522A (ko) * | 2018-09-20 | 2020-03-30 | 링크페이스 주식회사 | 수면 및 각성 유도 방법, 장치 및 컴퓨터 프로그램 |
| KR20210075313A (ko) * | 2019-12-13 | 2021-06-23 | 주식회사 재영소프트 | 모션 센서와 연동되는 수면 무호흡증 및 코골이 증상 개선용 움직임 유발 주파수를 생성하는 방법 |
Non-Patent Citations (2)
| Title |
|---|
| See also references of EP4431007A4 |
| STOCHHOLM ANDREAS; MIKKELSEN KAARE; KIDMOSE PREBEN: "Automatic sleep stage classification using ear-EEG", 2016 38TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), IEEE, 16 August 2016 (2016-08-16), pages 4751 - 4754, XP032980275, DOI: 10.1109/EMBC.2016.7591789 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119257545A (zh) * | 2024-03-27 | 2025-01-07 | 荣耀终端有限公司 | 一种睡眠状态的检测方法及可穿戴设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20250000450A1 (en) | 2025-01-02 |
| EP4431007A1 (en) | 2024-09-18 |
| EP4431007A4 (en) | 2025-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11311232B2 (en) | Systems and methods for managing sleep disorders | |
| US10524727B2 (en) | Circadian phase detection system | |
| US8823527B2 (en) | Consciousness monitoring | |
| CN105338893B (zh) | 用于测量生物信号的方法和装置 | |
| US20250281116A1 (en) | Systems and methods for multivariate stroke detection | |
| US10709376B2 (en) | System for supporting an elderly, frail and/or diseased person | |
| US11147505B1 (en) | Methods, systems and devices for identifying an abnormal sleep condition | |
| WO2020159259A1 (en) | Method for calculating recovery index based on rem sleep stage and electronic device thereof | |
| CN105007808A (zh) | 访问持续时间控制系统和方法 | |
| WO2019013456A1 (ko) | 동영상 기반 발작 추적감시 방법 및 장치 | |
| WO2021241925A1 (ko) | 혈압 측정 방법 및 전자 장치 | |
| JP2023545233A (ja) | 改善された皮膚温度モニタリングのための方法、システム、およびデバイス | |
| EP4301212A1 (en) | Acousto-mechanic sensors and applications of same | |
| WO2018093163A1 (ko) | 신생아 무호흡 측정장치 및 그 동작 방법과, 신생아 무호흡 측정 시스템 | |
| WO2023084502A1 (ko) | 수면 모니터링 장치 및 그 동작 방법 | |
| KR20230069804A (ko) | 수면 모니터링 장치 및 그 동작 방법 | |
| US20250000461A1 (en) | System and method for detecting health events | |
| WO2023063459A1 (ko) | 수면 유도 장치 및 그것의 동작방법 | |
| JP2022164560A (ja) | 情報処理システム、情報処理方法、及びプログラム | |
| WO2023084503A1 (ko) | 수면 모니터링 장치 및 그 동작 방법 | |
| TWI670095B (zh) | 智慧型睡眠輔助系統及其方法 | |
| US20220249018A1 (en) | Systems and methods for managing sleep disorders | |
| Rahman et al. | mDebugger: Assessing and diagnosing the fidelity and yield of mobile sensor data | |
| JPWO2019073963A1 (ja) | 臍部温度測定装置 | |
| US20260026774A1 (en) | Wearable device and heart failure detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22892267 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18709753 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2022892267 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2022892267 Country of ref document: EP Effective date: 20240612 |