WO2025150682A1 - Sleep determination system using signal sensing ring - Google Patents

Abstract

A sleep determination system using a signal sensing ring of the present invention comprises: a first sensor unit provided in the ring and measuring a movement pattern of a user's finger; and a server comprising a control unit for receiving a signal from the first sensor unit and determining whether the user is asleep.

Description

Sleep Determination System Using a Signal Detection Ring

The present invention relates to a sleep determination system using a signal detection ring, and more specifically, to a sleep determination system using a signal detection ring capable of determining whether or not a person is asleep through a first sensor unit that measures an ACC signal and a second sensor unit that measures a PPG signal, and changing the collection cycle of a biosignal depending on whether or not the person is asleep.

In general, electrocardiogram detection devices are important tools widely used in the clinical diagnosis of heart disease, and can be used to diagnose symptoms such as myocardial infarction and pulmonary embolism. In particular, people suffering from heart disease or suspected of having heart disease need to detect or warn of sudden cardiac abnormalities.

Electrocardiogram detection devices attach electrodes to the body to detect the minute electrical signals generated when the heart beats. However, conventional electrocardiogram detection devices have the problem of being inconvenient for the examiner to wear due to the size of the electrode devices.

Meanwhile, wearable devices are being used in various ways to detect bio-signals such as blood pressure. Most of the conventional wearable devices are made in the form of being worn on the wrist. However, when a wearable device is worn on the wrist like this, the wearable device has no components that come into contact with other bodies except the body it is being worn on, so there is a limitation that the reliability of bio-signal data is low.

In order to solve the problem of low reliability of bio-signal data in conventional wearable devices, a ring-shaped sensing device that can improve the reliability of bio-signal data is being developed. A conventional ring-shaped sensing device may include an inner ring, an outer ring, a top cover, etc., and the ring-shaped sensing device may be manufactured by assembling various parts.

Meanwhile, when collecting bio-signals through a ring-type sensing device, the need to collect bio-signals by considering whether the user is sleeping is increasing. Since sleep status can be used to create various medical diagnostic grounds, such as blood pressure during sleep or sleep apnea monitoring, there is a need to develop a ring-type sensing device that can collect bio-signals by considering whether the user is sleeping.

The present invention is intended to solve the above-described problem, and more specifically, relates to a sleep determination system using a signal detection ring that determines whether a person is sleeping through a first sensor unit that measures an ACC signal and a second sensor unit that measures a PPG signal, and can change the collection cycle of a biosignal depending on whether the person is sleeping.

A sleep determination system using a signal detection ring according to one embodiment is a system that automatically determines whether a user is sleeping using a signal detection ring, and is characterized by including: a first sensor unit provided on the ring that measures the movement pattern of a user's finger; and a server including a control unit that receives a signal from the first sensor unit and determines whether a user is sleeping.

The first sensor unit of the sleep determination system using a signal detection ring according to one embodiment may be formed of an acceleration sensor.

The first sensor unit of the sleep determination system using a signal detection ring according to one embodiment can measure the size or change in acceleration that occurs according to the movement pattern of the user's finger.

A sleep determination system using a signal detection ring according to one embodiment is provided in the ring and includes a second sensor unit for measuring a photoplethysmography (PPG) signal of the user, and the control unit can receive a signal from the second sensor unit and determine whether the user is wearing the ring.

The control unit of the sleep determination system using a signal detection ring according to one embodiment can determine whether the user is wearing the ring based on the size or shape of the signal measured by the second sensor unit.

The control unit of the sleep determination system using the signal detection ring according to one embodiment determines that the user is wearing the ring through the second sensor unit, and if a first pattern is measured from the first sensor unit for a specified period of time, it determines that the user is active for a specified period of time as a first reference value, and if the user is wearing the ring through the second sensor unit, and if a second pattern is measured from the first sensor unit for a specified period of time, it determines that the user is resting for a specified period of time as a second reference value.

In one embodiment, the first pattern of the sleep determination system using a signal detection ring may be irregularly formed, and the second pattern may be regularly formed.

The control unit of the sleep determination system using a signal detection ring according to one embodiment may determine that the user is sleeping when the number determined as the second reference value is greater than or equal to a designated reference number for a certain period of time.

The control unit of the sleep determination system using a signal detection ring according to one embodiment can calculate the reference number through statistical values of the second reference values measured during a specified period.

In a sleep determination system using a signal detection ring according to one embodiment, the first sensor unit can continuously or periodically measure a movement pattern of a user's finger, and the second sensor unit can continuously or periodically measure the user's photoplethysmography (PPG).

A sleep determination system using a signal detection ring according to one embodiment is provided in the ring and includes a third sensor unit that measures a user's biosignal, and the third sensor unit can measure the user's biosignal at a specified periodic interval.

The control unit of the sleep determination system using a signal detection ring according to one embodiment controls a designated periodic interval at which the third sensor unit measures the user's bio-signal, and if the control unit determines that the user is not sleeping, the control unit can measure the bio-signal at a first periodic interval through the third sensor unit, and if the control unit determines that the user is sleeping, the control unit can measure the bio-signal at a second periodic interval through the third sensor unit.

The second cycle interval of the sleep determination system using a signal detection ring according to one embodiment may be formed longer than the first cycle interval.

The control unit of the sleep determination system using a signal detection ring according to one embodiment can change the second cycle interval and the first cycle interval through statistical values of the ratio of biosignals with good signal quality among the patterns of signals measured by the third sensor unit during a specified period.

The user's biosignal measured through the third sensor unit of the sleep determination system using a signal detection ring according to one embodiment may be the user's blood pressure or the user's oxygen saturation.

A sleep determination system using a signal detection ring according to one embodiment is provided in the ring and includes a third sensor unit for measuring a user's biosignal, wherein the third sensor unit measures the user's biosignal at a specified periodic interval, and the control unit controls the specified periodic interval at which the third sensor unit measures the user's biosignal, and the control unit can change the specified periodic interval according to a ratio of biosignals with good signal quality among patterns of signals measured by the third sensor unit.

The control unit of the sleep determination system using a signal detection ring according to one embodiment can change the specified periodic interval through a statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit during a specified period.

The present invention relates to a sleep determination system using a signal detection ring, and has the advantage of being able to determine whether or not a person is sleeping through a control unit, a first sensor unit that measures an ACC signal, and a second sensor unit that measures a PPG signal.

In addition, the present invention can determine that a user is sleeping when the number of second reference values determined to be resting by the user is greater than or equal to a specified reference number, and has the advantage of being able to determine whether or not the user is sleeping in an optimized manner by calculating the reference number through statistical values of second reference values measured over a specified period of time.

In addition, the present invention has an advantage in that it can improve the accuracy of determining whether a user is sleeping by calculating a reference number through statistical values of second reference values measured over a specified period of time.

In addition, the present invention has the advantage of being able to determine whether or not a person is asleep through a control unit, a first sensor unit, and a second sensor unit, and change the collection cycle of a biosignal of a third sensor unit depending on whether or not a person is asleep, thereby saving the ring's battery and reducing server costs.

FIG. 1 is a drawing showing a signal detection ring according to an embodiment of the present invention.

FIG. 2 is a drawing showing a server including a ring and a control unit including a first sensor unit and a second sensor unit according to an embodiment of the present invention.

FIG. 3 is a drawing showing a control unit, a first sensor unit, a second sensor unit, and a third sensor unit according to an embodiment of the present invention.

FIG. 4 is a diagram showing a method of determining whether a user is active, resting, or not wearing a ring through a control unit, a first sensor unit, and a second sensor unit according to an embodiment of the present invention.

FIG. 5 is a diagram showing determining whether or not a person is asleep through a control unit, a first sensor unit, and a second sensor unit according to an embodiment of the present invention.

FIG. 6 is a diagram showing a method of determining whether a person is asleep through a control unit, a first sensor unit, and a second sensor unit according to an embodiment of the present invention, and changing the interval of a biosignal collection cycle of a third sensor unit depending on whether a person is asleep.

FIG. 7 is a diagram showing changing the second cycle interval and the first cycle interval through a control unit according to the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured during a specified period by a third sensor unit according to an embodiment of the present invention.

This specification clarifies the scope of the present invention and explains the principles of the present invention and discloses embodiments so that a person having ordinary skill in the art to which the present invention pertains can practice the present invention. The disclosed embodiments can be implemented in various forms.

Expressions such as "includes" or "may include", which may be used in various embodiments of the present invention, indicate the presence of the disclosed corresponding function, operation or component, etc., and do not limit one or more additional functions, operations or components, etc. In addition, it should be understood that in various embodiments of the present invention, terms such as "includes" or "has" are intended to specify the presence of a feature, number, step, operation, component, part or a combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

When it is said that a component is "connected, coupled" to another component, it should be understood that said component may be directly connected or coupled to said other component, but that there may also be other new components between said component and said other component. On the other hand, when it is said that a component is "directly connected" or "directly coupled" to another component, it should be understood that no other new components exist between said component and said other component.

The terms first, second, etc. used in this specification may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The present invention relates to a sleep determination system using a signal detection ring, and relates to a sleep determination system using a signal detection ring that determines whether a person is asleep through a first sensor unit that measures an ACC signal and a second sensor unit that measures a PPG signal, and can change the collection cycle of a biosignal depending on whether a person is asleep. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

Referring to Fig. 1, a signal detection ring (100) according to an embodiment of the present invention is formed in a ring shape and is worn on a user's finger. The signal detection ring (100) may be equipped with various sensor parts, and various signals generated by the user can be measured through the sensor parts.

Referring to FIG. 1, a signal detection ring (100) according to an embodiment of the present invention may include an inner ring (110), a sensor portion (120), an outer ring (130), and a top cover (140).

The inner ring (110) above is in contact with the user's finger. The inner ring (110) may be formed in a circular ring shape, and the user's finger may be inserted into the inner ring (110) formed in a circular ring shape.

Referring to Fig. 1, the outer ring (130) is coupled to the outer side of the inner ring (110), but is coupled with a predetermined section of the inner ring (110) open. The outer ring (130) is formed in an arc shape and is extended.

The top cover (140) is coupled to the outer side of the inner ring (110), and can be coupled to the predetermined section. The top cover (140) is formed in an arc shape and extends, and the top cover (140) can be coupled to the predetermined section on the outer side of the inner ring (110) where the outer ring (130) is not coupled.

When the top cover (140) is coupled to the outer side of the inner ring (110), the top cover (140) can be coupled to the outer ring (130) on the outer side of the inner ring (110). When the outer ring (130) and the top cover (140) are coupled to each other, the outer ring (130) and the top cover (140) form a shape of a closed circular ring on the outer side of the inner ring (110).

The above sensor unit (120) can be positioned to come into contact with the user's finger. The sensor unit (120) can measure various signals generated by the user, and the sensor unit (120) can include various components such as sensors, electrodes, and substrates for measuring various signals generated by the user.

However, the signal detection ring (100) according to the embodiment of the present invention is not limited to the one described above. The signal detection ring (100) according to the embodiment of the present invention may be formed in various forms as long as it is provided with a sensor unit capable of measuring various signals generated by the user. Hereinafter, a preferred embodiment of the present invention will be described in detail with a focus on the signal detection ring (100).

A sleep determination system using a signal detection ring according to an embodiment of the present invention includes a first sensor unit (121) provided on a ring (100) and a server (150) including a control unit (160).

The first sensor unit (121) is provided in the signal detection ring (100), and the first sensor unit (121) can measure the movement pattern of the user's finger. The first sensor unit (121) according to an embodiment of the present invention can collect an acceleration signal (ACC signal, acceleration signal), and the first sensor unit (121) can be formed of an acceleration sensor.

Specifically, the first sensor unit (121) may measure the size or amount of change in acceleration that occurs according to the movement pattern of the user's finger when the user wears the ring (100).

The above first sensor unit (121) measures the size or change in acceleration that occurs according to the movement pattern of the user's finger, and analyzes the movement pattern of the user's finger through this.

Referring to Fig. 2, the server (150) includes a control unit (160) that receives a signal from the first sensor unit (121) and determines whether or not the user is sleeping. The server (150) includes the control unit (160) that receives a signal from the sensor unit of the signal detection ring (100) and determines whether or not the user is sleeping. The server (150) may be composed of various devices.

For example, the server (150) may be various electronic devices such as a mobile device, a wearable device, a PC, etc. In addition, the server (150) may be equipped in the signal detection ring (100). As such, the server (150) may be various devices as long as it includes the control unit (160) that receives a signal from the sensor unit of the signal detection ring (100) and determines whether or not the user is sleeping.

Referring to FIG. 2, the control unit (160) is provided in the server (150), and the control unit (160) can receive a signal from the first sensor unit (121). The control unit (160) can receive a signal wirelessly from the first sensor unit (121), and the control unit (160) can be a device that receives a signal measured by the sensor unit of the ring (100) and determines whether or not the user is sleeping based on the signal.

According to an embodiment of the present invention, the control unit (160) can receive a signal about the movement pattern of the user's finger from the first sensor unit (121). The control unit (160) can receive a signal about the movement pattern of the user's finger from the first sensor unit (121), and through this, can determine whether the user is active, resting, sleeping, etc.

Referring to FIGS. 2 and 3, a sleep determination system using a signal detection ring according to an embodiment of the present invention may include a second sensor unit (122) provided on the ring (100) and measuring a user's photoplethysmography (PPG) signal.

The second sensor unit (122) is equipped on the ring (100) and can measure the user's photoplethysmography (PPG) signal, and the control unit (160) can receive a signal from the second sensor unit (122) and determine whether the user is wearing the ring. The control unit (160) can receive a signal wirelessly from the second sensor unit (122), and the control unit (160) can receive the signal measured by the second sensor unit (122) and determine whether the user is wearing the ring based on the signal.

Specifically, the control unit (160) can determine whether the user is wearing the ring based on the size or shape of the signal measured by the second sensor unit (122). When the user wears the ring (100), the second sensor unit (122) measures the user's photoplethysmography (PPG) signal.

There is a difference in the size or shape of the PPG signal generated from the second sensor unit (122) when the user wears the ring (100) and when the user does not wear the ring (100). The control unit (160) recognizes this difference and determines whether the user is wearing the ring (100).

Referring to FIG. 4, the control unit (160) according to an embodiment of the present invention can determine whether the user is active, whether the user is sleeping, and whether the user is not wearing a ring through signals measured by the first sensor unit (121) and the second sensor unit (122).

Referring to Fig. 4, the control unit (160) can determine whether the user is not wearing the ring through the size or shape of the PPG signal measured by the second sensor unit (122). The control unit (160) determines that the user is not wearing the ring (100) when the user is not wearing the ring based on the PPG signal measured by the second sensor unit (122).

Referring to FIG. 4, the control unit (160) determines that the user is wearing the ring (100) based on the PPG signal measured by the second sensor unit (122), and in this case, determines whether the user is active or resting through the first sensor unit (121).

Specifically, the control unit (160) determines that the user is wearing the ring (100) through the second sensor unit (122), and if a first pattern is measured by the first sensor unit (121) for a specified period of time, it can determine that the user's activity for the specified period of time is a first reference value.

Here, the first pattern may be an irregular pattern, and the first pattern may be an unstable pattern. That is, when the control unit (160) determines that the user is wearing the ring (100) through the second sensor unit (122), if the first sensor unit (121) measures the unstable first pattern, it determines that the user is active. When the control unit (160) determines that the user is active, it may set a first reference value.

Referring to FIG. 4, the control unit (160) determines that the user is wearing the ring (100) through the second sensor unit (122), and if a second pattern is measured by the first sensor unit (121) for a specified period of time, it can determine that the user is resting for a specified period of time as a second reference value.

Here, the second pattern may be a regular pattern, and the second pattern may be a stable pattern. Specifically, the second pattern may be a regular pattern in which a specific pattern is repeated.

That is, when the control unit (160) determines that the user is wearing the ring (100) through the second sensor unit (122), and when the first sensor unit (121) measures the second stable pattern, the control unit (160) determines that the user is resting. When the control unit (160) determines that the user is resting, the control unit (160) can set a second reference value.

The first pattern according to the embodiment of the present invention is described as being irregularly formed and the second pattern is described as being regularly formed, but is not limited thereto. The first pattern may be formed of various patterns as long as it is a pattern capable of measuring whether the user is active, and the second pattern may be formed of various patterns as long as it is a pattern capable of measuring whether the user is resting.

Additionally, the first pattern capable of measuring whether the user is active and the second pattern capable of measuring whether the user is resting may also be derived from patterns occurring from the user's previous activity and previous rest data.

Referring to FIG. 5, the control unit (160) according to an embodiment of the present invention can determine whether the user is sleeping through the number of second reference values that occur when it is determined that the user is resting.

Specifically, the control unit (160) determines that the user is sleeping when the number determined as the second reference value is greater than or equal to a designated reference number for a certain period of time. According to an embodiment of the present invention, a case in which the user switches from a resting state to an active state cannot be determined as a sleeping state.

When a user switches from a resting state to an active state, the first sensor unit (121) may measure the stable second pattern and the second reference value, and then measure the unstable first pattern and the first reference value. In this case, the control unit (160) must determine that the user is not sleeping.

Accordingly, the control unit (160) determines that the user is sleeping when the number of second reference values determined for a certain period of time is greater than or equal to the designated reference number. More specifically, the control unit (160) determines that the user is sleeping when the number of second reference values in which the second pattern is measured for a short unit of time (designated time) for a certain period of time is greater than or equal to the designated reference number, thereby improving the accuracy of determining whether the user is sleeping.

That is, the control unit (160) can determine whether or not sleep is occurring through the number of short unit times (second reference value) that are determined to be resting for a certain period of time.

According to an embodiment of the present invention, the control unit (160) can calculate the reference number through statistical values of the second reference values measured during a specified period. Specifically, the control unit (160) can calculate the reference number of the second reference values through the user's previous sleep data in order to determine whether or not the user is sleeping.

According to an embodiment of the present invention, the first sensor unit (121) can measure a movement pattern of a user's finger that occurs when the user is in a sleeping state and when the user is in a state of repeating activity and rest. The first sensor unit (121) can measure a statistical value of the second reference value when the user is in a sleeping state and when the user is in a state of repeating activity and rest.

In addition, the control unit (160) according to an embodiment of the present invention can calculate statistical values by accumulating signals measured by the first sensor unit (121) for a specified period of time. Specifically, the control unit can calculate statistical values of the second reference value when the user is in a sleeping state and when the user is in a state of repeating activity and rest.

For example, the control unit (160) may set a designated period of 24 hours prior to the sleep determination time and accumulate the signals measured by the first sensor unit (121) to calculate statistical values. In addition, the control unit (160) may set a designated period of 24 hours prior to the sleep determination time and calculate statistical values of the second reference value when the user is in a sleeping state and when the user is in a state of repeating activity and rest.

The above number of criteria required to determine whether or not sleep is present may vary depending on the user's lifestyle. Therefore, in order to increase the accuracy of sleep determination, it is necessary to optimize the above number of criteria required to determine sleep for each user.

The control unit (160) according to an embodiment of the present invention can calculate the reference number for determining whether or not a person is sleeping through statistical values of the second reference values measured over a specified period of time, thereby enabling the determination of whether or not a person is sleeping to be optimized for the user.

In addition, the sleep determination system using the signal detection ring according to an embodiment of the present invention can improve the accuracy of determining whether or not a person is sleeping by determining whether or not the person is sleeping in a way that is optimized for the user.

In the case where the control unit (160) according to an embodiment of the present invention cannot calculate the reference number for determining whether or not sleep is present through the statistical values of the second reference values measured during a designated period due to insufficient past data, the control unit (160) may preferentially utilize the designated reference number.

Afterwards, when a specified period of time has elapsed and the standard number for determining whether or not sleep has been determined can be calculated through the statistical values of the second standard value, the control unit (160) can determine whether or not sleep has been determined through the standard number calculated through the statistical values of the second standard value.

According to an embodiment of the present invention, the first sensor unit (121) can continuously or periodically measure the movement pattern of the user's finger, and the second sensor unit (122) can continuously or periodically measure the user's photoplethysmography (PPG).

The first sensor unit (121) and the second sensor unit (122) according to an embodiment of the present invention may be capable of continuously measuring signals, and the first sensor unit (121) and the second sensor unit (122) according to an embodiment of the present invention may also periodically measure signals to reduce battery consumption of the ring (100) or the cost of the server (150).

According to an embodiment of the present invention, whether or not one is sleeping can be used to create various medical diagnostic grounds, such as monitoring blood pressure or sleep apnea during sleep. Therefore, a sleep determination system using a signal detection ring according to an embodiment of the present invention can first determine whether one is sleeping through the control unit (160), and then measure the user's biosignals.

A sleep determination system using a signal detection ring according to an embodiment of the present invention is provided in the ring (100) and may include a third sensor unit (123) that measures a user's biosignal.

Referring to FIG. 3, the third sensor unit (123) can measure the user's bio-signal continuously or periodically. However, it is preferable that the third sensor unit (123) measure the user's bio-signal at a designated periodic interval to reduce battery consumption of the ring (100) or the cost of the server (150).

The user's bio-signal measured by the third sensor unit (123) according to an embodiment of the present invention may be the user's blood pressure or the user's oxygen saturation. However, it is not limited thereto, and the third sensor unit (123) may measure other bio-signals other than the user's blood pressure or the user's oxygen saturation. Hereinafter, the description will focus on the third sensor unit (123) measuring the user's blood pressure or the user's oxygen saturation.

According to an embodiment of the present invention, the control unit (160) can control the designated periodic interval at which the third sensor unit (123) measures the user's bio-signal. Referring to FIG. 6, the control unit (160) can change the designated periodic interval at which the third sensor unit (123) measures the user's bio-signal depending on whether the user is sleeping.

Specifically, if the control unit (160) determines that the user is not sleeping, it can measure the bio-signal at a first cycle interval through the third sensor unit (123). In addition, if the control unit (160) determines that the user is sleeping, it can measure the bio-signal at a second cycle interval through the third sensor unit (123).

Here, the control unit (160) can determine whether the user is sleeping through the first sensor unit (121) and the second sensor unit (122). That is, the control unit (160) can determine whether the user is sleeping through the first sensor unit (121) and the second sensor unit (122), and change the designated periodic interval at which the user's bio-signal is measured by the third sensor unit (123) depending on whether the user is sleeping.

The third sensor unit (123) of the ring (100) that measures the user's blood pressure or the user's oxygen saturation may collect signals with poor signal quality due to the user's movement or external reasons, and may also collect outliers. Therefore, in order to measure reliable statistical values of the user's blood pressure or the user's oxygen saturation, a large number of biosignals with good signal quality are required.

In order to collect a large number of bio-signals with good signal quality, it is desirable to shorten the designated periodic interval at which the third sensor unit (123) measures the user's bio-signals. However, due to the limitations of memory and battery capacity in the characteristics of the ring (100), there is a problem in that it is difficult to collect the designated periodic interval at which the user's bio-signals are measured at a short period.

A sleep determination system using a signal detection ring according to an embodiment of the present invention can determine whether a user is sleeping through the control unit (160), and change a designated periodic interval for measuring the user's bio-signal through the third sensor unit (123) depending on whether the user is sleeping.

When the user is in a sleeping state, the user can be seen as being in a very stable state, and in a stable state, there is little movement, so the probability of collecting biosignals with good signal quality increases. Therefore, even if signals are collected at a longer period than the active period when the user is not sleeping, a large number of biosignals with good signal quality, which are necessary for calculating reliable biosignal statistics, can be collected.

That is, when the user is in a sleeping state, it is desirable to lengthen the designated periodic interval at which the third sensor unit (123) measures the user's bio-signal, and when the user is in an active state and not in a sleeping state, it is desirable to shorten the designated periodic interval at which the third sensor unit (123) measures the user's bio-signal.

Referring to FIG. 6, the control unit (160) according to an embodiment of the present invention can change the designated periodic interval at which the third sensor unit (123) measures the user's bio-signal by distinguishing between a case in which the user is in a sleeping state and an active period in which the user is not in a sleeping state.

The above control unit (160) can determine whether the user is sleeping through the first sensor unit (121) and the second sensor unit (122), and if the user is in an active state where he or she is not sleeping, the control unit (160) can measure the biosignal at the first cycle interval through the third sensor unit (123).

In addition, the control unit (160) can determine whether the user is sleeping through the first sensor unit (121) and the second sensor unit (122), and if the user is sleeping, measure the biosignal at a second cycle interval through the third sensor unit (123). According to an embodiment of the present invention, the second cycle interval can be formed longer than the first cycle interval.

In this way, the control unit (160) can lengthen the designated periodic interval (second periodic interval) at which the user's bio-signal is measured by the third sensor unit (123) when the user is in a sleeping state, and can shorten the designated periodic interval (first periodic interval) at which the user's bio-signal is measured by the third sensor unit (123) when the user is in an active state and not in a sleeping state.

Through this, the sleep determination system using the signal detection ring according to the embodiment of the present invention can collect a large number of biosignals with good signal quality from the user's sleep state and activity period, while at the same time saving the memory and battery of the ring (100).

According to an embodiment of the present invention, the control unit (160) can change the second cycle interval and the first cycle interval through a statistical value of the ratio of biosignals with good signal quality among the patterns of signals measured during a specified period by the third sensor unit (123).

Referring to Fig. 7, the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) may be different for each user. Specifically, users A and B may have different lifestyle habits, and accordingly, the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) may be different.

Accordingly, the control unit (160) can change the first periodic interval and the second periodic interval by taking this into consideration. Specifically, the control unit (160) can analyze the statistical value of the ratio of biosignals with good signal quality among the signal patterns through the third control unit (123) for a specified period of time and set the second periodic interval and the first periodic interval accordingly.

For example, the control unit (160) may set 24 hours as a designated period and analyze the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123). At this time, referring to Fig. 7, the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) may be different for user A and user B.

The control unit (160) can change the first cycle interval and the second cycle interval in consideration of this. If the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) is high, the control unit (160) can lengthen the first cycle interval and the second cycle interval, and if the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) is low, the first cycle interval and the second cycle interval can be shortened.

According to an embodiment of the present invention, even when the control unit (160) changes the first cycle interval and the second cycle interval based on the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123), the second cycle interval can be set longer than the first cycle interval.

FIG. 7 is an example of changing the second period interval and the first period interval through the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) during a designated period by the control unit (160) according to an embodiment of the present invention, but is not limited thereto. The second period interval and the first period interval according to an embodiment of the present invention may be changed according to necessary requirements.

The control unit (160) according to an embodiment of the present invention can change the second cycle interval and the first cycle interval through the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured during a designated period by the third sensor unit (123), and through this, the second cycle interval and the first cycle interval can be set to be optimized for each user.

In addition, the sleep determination system using the signal detection ring according to an embodiment of the present invention can improve the accuracy of the biosignal measured by the third sensor unit (123) by setting the second cycle interval and the first cycle interval in an optimized manner for each user.

In a case where the control unit (160) according to an embodiment of the present invention cannot calculate a statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured during a specified period by the third sensor unit (123) due to insufficient past data, the control unit (160) may arbitrarily set the second period interval and the first period interval.

Thereafter, when a specified period of time has elapsed and the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured during the specified period by the third sensor unit (123) is calculated, the control unit (160) can set the second cycle interval and the first cycle interval to suit the user.

Here, among the signal patterns, a biosignal with good signal quality may be a stable signal that occurs regularly. However, it is not limited to this, and among the signal patterns, a biosignal with good signal quality may be designated as a specific pattern.

A sleep determination system using a signal detection ring according to an embodiment of the present invention can be utilized as follows. When the user's blood pressure is measured by the third sensor unit (123) according to an embodiment of the present invention, the default value of the specified periodic interval can be 5 minutes.

In general, at least 7 valid measurement values are required to calculate statistical values of a user's blood pressure when the user is in a sleeping state. In addition, the server (150) can record an average value of blood pressure measurements for 30 minutes, and at this time, at least 3 valid blood pressure values must exist for 30 minutes.

When a user uses the ring (100), the designated periodic interval for measuring the user's blood pressure by the third sensor unit (123) may be set to 5 minutes for the first 24 hours. At this time, the control unit (160) may calculate the ratio of biosignals with good signal quality among a plurality of signals. The ratio of biosignals with good signal quality among a plurality of signals may vary depending on sleep habits, the wearing state of the ring (100), and the user's biological characteristics.

The above control unit (160) can change the designated periodic interval for measuring blood pressure in the third sensor unit (123) when the ratio of bio-signals with good signal quality among a plurality of signals is sufficiently high so that there are seven or more valid measurements in the sleeping state.

For example, the control unit (160) determines whether the user is sleeping through the first sensor unit (121) and the second sensor unit (122), and if the user is sleeping, the designated periodic interval for measuring blood pressure through the third sensor unit (123) can be changed to be longer than the designated periodic interval for measuring blood pressure through the third sensor unit (123) in the active period. This makes it possible to reduce battery consumption of the ring (100) and the cost of the server (150).

In this way, the sleep determination system using the signal detection ring according to an embodiment of the present invention can change the designated interval at which blood pressure is measured by the third sensor unit (123) depending on whether the user is sleeping.

However, the embodiment of changing the designated periodic interval for measuring the user's blood pressure through the third sensor unit (123) of the sleep determination system using the signal detection ring according to the embodiment of the present invention described above is only one example and is not limited thereto.

A sleep determination system using a signal detection ring according to an embodiment of the present invention can measure bio-signals of various users, and a designated periodic interval for measuring bio-signals can be changed depending on the environment for measuring bio-signals.

According to an embodiment of the present invention, the control unit (160) can control a designated periodic interval at which the third sensor unit (123) measures the user's bio-signal. Specifically, the control unit (160) can change the designated periodic interval according to the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123).

For example, when measuring a user's bio-signal through the third sensor unit (123), if the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) increases, the control unit (160) can change the designated periodic interval for measuring the user's bio-signal to a longer period.

In addition, when measuring a user's bio-signal through the third sensor unit (123), if the ratio of bio-signals with good signal quality among the signal patterns measured by the third sensor unit (123) decreases, the control unit (160) can shorten the designated periodic interval for measuring the user's bio-signal.

In addition, the control unit (160) according to an embodiment of the present invention can change the specified periodic interval through the statistical value of the ratio of biosignals with good signal quality among the patterns of signals measured during a specified period by the third sensor unit (123).

The above control unit (160) can analyze the statistical value of the ratio of biosignals with good signal quality among the signal patterns through the third control unit (123) for a specified period of time and set the specified periodic interval accordingly.

For example, the control unit (160) can set 24 hours as a designated period and analyze the statistical value of the ratio of biosignals with good signal quality among the patterns of signals measured by the third sensor unit (123).

The control unit (160) can change the specified periodic interval in consideration of this. If the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) is high, the control unit (160) can lengthen the specified periodic interval, and if the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit (123) is low, the control unit (160) can shorten the specified periodic interval.

The above control unit (160) can change the specified periodic interval according to each state, such as activity, rest, and sleep, through the statistical value of the ratio of bio-signals with good signal quality among the patterns of signals measured during the specified period by the third sensor unit (123).

Here, among the signal patterns, a biosignal with good signal quality may be a stable signal that occurs regularly. However, it is not limited to this, and among the signal patterns, a biosignal with good signal quality may be designated as a specific pattern.

The sleep determination system using the signal detection ring according to the embodiment of the present invention described above has the following effects.

A sleep determination system using a signal detection ring according to an embodiment of the present invention has the advantage of being able to determine whether or not a person is sleeping through a control unit, a first sensor unit that measures an ACC signal, and a second sensor unit that measures a PPG signal.

In addition, the sleep determination system using the signal detection ring according to an embodiment of the present invention can determine that the user is sleeping when the number of second reference values determined to be resting by the user is greater than or equal to a specified reference number, and has an advantage in that it can determine whether the user is sleeping in an optimized manner by calculating the reference number through statistical values of the second reference values measured during a specified period of time.

In addition, the sleep determination system using the signal detection ring according to an embodiment of the present invention has the advantage of improving the accuracy of determining whether the user is sleeping by calculating the reference number through statistical values of the second reference values measured over a specified period of time.

In addition, the sleep determination system using a signal detection ring according to an embodiment of the present invention determines whether a person is sleeping through a control unit, a first sensor unit, and a second sensor unit, and can change the collection cycle of a biosignal of a third sensor unit depending on whether a person is sleeping, thereby saving the battery of the ring and reducing server costs, which has the advantage of being able to do so.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and variations of embodiments are possible from this. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the appended patent claims.

Claims (17)

In a system that automatically determines whether a person is sleeping or not using a signal detection ring, A first sensor section provided on the ring and configured to measure the movement pattern of the user's finger; A sleep determination system using a signal detection ring, characterized by including a server including a control unit that receives a signal from the first sensor unit and determines whether or not the subject is sleeping. In the first paragraph, A sleep determination system using a signal detection ring, characterized in that the first sensor section is comprised of an acceleration sensor. In the second paragraph, The above first sensor part, A sleep determination system using a signal detection ring characterized by measuring the magnitude or amount of change in acceleration that occurs according to the movement pattern of a user's finger. In the first paragraph, It is equipped with a ring and includes a second sensor section that measures the user's photoplethysmography (PPG) signal. A sleep determination system using a signal detection ring, characterized in that the control unit receives a signal from the second sensor unit and determines whether the user is wearing the ring. In paragraph 4, A sleep determination system using a signal detection ring, characterized in that the control unit determines whether the user is wearing the ring based on the size or shape of the signal measured by the second sensor unit. In paragraph 4, The above control unit, When the second sensor part determines that the user is wearing the ring, and the first pattern is measured by the first sensor part for a specified period of time, it is determined as the first reference value that the user is active for the specified period of time. A sleep determination system using a signal detection ring, characterized in that it determines that the user is wearing the ring through the second sensor unit, and if a second pattern is measured by the first sensor unit for a specified period of time, it determines that the user is resting for a specified period of time as a second reference value. In Article 6, A sleep determination system using a signal detection ring, characterized in that the first pattern is irregularly formed and the second pattern is regularly formed. In Article 6, The above control unit, A sleep determination system using a signal detection ring, characterized in that it determines that the user is sleeping when the number determined by the second reference value for a certain period of time is greater than a specified reference number. In Article 8, The above control unit, A sleep determination system using a signal detection ring, characterized in that the reference number is calculated through statistical values of the second reference values measured over a specified period of time. In Article 8, The above first sensor unit continuously or periodically measures the movement pattern of the user's finger, A sleep determination system using a signal detection ring, characterized in that the second sensor unit continuously or periodically measures the user's photoplethysmography (PPG). In Article 8, It is equipped with a ring and includes a third sensor section that measures the user's bio-signals. A sleep determination system using a signal detection ring, characterized in that the third sensor section measures the user's biosignals at specified periodic intervals. In Article 11, The above control unit controls the designated periodic interval at which the third sensor unit measures the user's bio-signal, The above control unit, if it determines that the user is not sleeping, measures the biosignal at a first cycle interval through the third sensor unit. A sleep determination system using a signal detection ring, characterized in that the control unit measures a biosignal at a second cycle interval through the third sensor unit when the control unit determines that the user is sleeping. In Article 12, A sleep determination system using a signal detection ring, characterized in that the second cycle interval is formed longer than the first cycle interval. In Article 12, The above control unit, A sleep determination system using a signal detection ring characterized in that the second cycle interval and the first cycle interval are changed through statistical values of the ratio of bio-signals with good signal quality among the patterns of signals measured during a specified period by the third sensor unit. In Article 11, A sleep determination system using a signal detection ring, characterized in that the user's bio-signal measured through the third sensor unit is the user's blood pressure or the user's oxygen saturation. In the first paragraph, It is equipped with a ring and includes a third sensor section that measures the user's bio-signals. The third sensor unit measures the user's bio-signal at a specified periodic interval, and the control unit controls the specified periodic interval at which the third sensor unit measures the user's bio-signal. A sleep determination system using a signal detection ring, characterized in that the control unit changes the designated periodic interval according to the ratio of bio-signals with good signal quality among the patterns of signals measured by the third sensor unit. In Article 16, The above control unit, A sleep determination system using a signal detection ring characterized in that the designated periodic interval is changed through statistical values of the ratio of bio-signals with good signal quality among the patterns of signals measured during a designated period by the third sensor unit.