KR101218626B1 - Arraratus and method determining quality of sleep - Google Patents

Abstract

The present inventors sleep quality determination device, at least one of the heartbeat signal for the user's heart rate, the breathing signal for the user's breathing and the movement signal for the user's movement according to the magnitude and frequency of the pressure applied by the user Sensor unit for measuring the original signal comprising a; A filter unit for dividing the heartbeat signal, the respiration signal, and the movement signal from each other according to a predetermined frequency from the original signal measured by the sensor unit; The heart rate is measured from the heart rate signal output by the filter unit, the respiratory rate is measured from the respiration signal output by the filter unit, the motion number is measured from the motion signal output by the filter unit, and the measured A controller configured to determine sleep quality according to a predetermined value using at least one of a heart rate, a respiratory rate, and a movement number; And an output unit configured to output a result of sleep quality determined by the controller, wherein the bio information is about at least one of breathing rate, heart rate, and movement rate through a non-adhesive sensor while the user is sleeping. By measuring the quality of sleep according to a predetermined value based on the measured biometric information and outputting the user, the user can systematically manage the sleep method through the result of the quality of sleep to improve the health of the user Has

Description

Sleep quality determination device and method {ARRARATUS AND METHOD DETERMINING QUALITY OF SLEEP}

The present invention relates to an apparatus and method for determining the quality of sleep, and more particularly to an apparatus and method for determining the quality of sleep by simply measuring the user's biometric information while the user is sleeping.

Recently, as the quality of life is improved and the aging population is rapidly progressing, the interest in health is increasing day by day as the desire for disease-free longevity grows. There are many ways to maintain and improve your health, including exercise and diet, but it's important to take good care of your sleep, which is about 25% of the time. For this reason, researches to improve sleep quality have been actively conducted in recent years.

In order to improve the quality of sleep, analysis of sleep conditions must be preceded. You can maintain a healthy body by analyzing the user's sleep status and documenting and systematically managing it. In order to analyze the sleep state, it is basic to measure various bio information such as the number of breaths during sleep, heart rate, movement (backward rotation), and sleep time.

However, mobilizing medical equipment to measure biometric information such as respiratory rate or heart rate is cumbersome, and it is accompanied by inconvenience such as attaching to the body for biometric information measurement. In this case, the cumbersome and discomfort associated with measuring the biometric information to improve the quality of sleep may result in the quality of sleep.

An object of the present invention for solving the above problems is to sleep sleep to determine the quality of sleep by simply measuring the biometric information on at least one of the respiratory rate, heart rate and movement through the non-adhesive sensor while the user sleeps To provide a quality determination apparatus and method.

Sleep quality determination apparatus according to an embodiment of the present invention according to the magnitude and frequency of the pressure applied by the user to the heartbeat signal of the user's heart rate, the breathing signal for the user's breathing and the movement of the user A sensor unit measuring an original signal including at least one of the motion signals; A filter unit for dividing the heartbeat signal, the respiration signal, and the movement signal from each other according to a predetermined frequency from the original signal measured by the sensor unit; The heart rate is measured from the heart rate signal output by the filter unit, the respiratory rate is measured from the respiration signal output by the filter unit, the motion number is measured from the motion signal output by the filter unit, and the measured A controller configured to determine sleep quality according to a predetermined value using at least one of a heart rate, a respiratory rate, and a movement number; And an output unit configured to output a result of sleep quality determined by the controller.

Sleep quality determination method according to an embodiment of the present invention according to the magnitude and frequency of the pressure applied by the user to the sensor unit heart rate signal for the user's heart rate, breathing signal for the user's breathing and the user's movement A biometric information measuring step of measuring an original signal including at least one of a motion signal for a; A filtering step of dividing the heartbeat signal, the respiration signal, and the movement signal from the original signal measured by the sensor unit according to a predetermined frequency to a filter unit; Measuring a heart rate from the heart rate signal output by the filter unit with a control unit, measuring the respiratory rate from the respiration signal output by the filter unit, measuring the number of movements from the motion signal output by the filter unit, A sleep quality determining step of determining sleep quality according to a predetermined value using at least one of measured heart rate, respiration rate, and movement number; And an output step of outputting a result of sleep quality determined by the controller to an output unit.

According to the inventor's sleep quality determination apparatus and method, the user can easily measure the biometric information on at least one of the respiratory rate, heart rate and the number of movements through the non-adhesive sensor during sleep, and by the measured biometric information By determining and outputting sleep quality according to a predetermined value and providing the same to the user, the user has an advantage of improving the health of the user by systematically managing the sleep method through the result of the sleep quality.

1 is a block diagram of an apparatus for determining sleep quality according to an embodiment of the present invention;
2 is a view schematically showing an apparatus for determining sleep quality according to an embodiment of the present invention;
3 is a block diagram of an apparatus for determining sleep quality according to an embodiment of the present invention;
4 is a diagram showing an original signal including a respiratory signal and a heartbeat signal;
5 is a flowchart illustrating a method for determining sleep quality according to an embodiment of the present invention.

In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a block diagram of an apparatus for determining sleep quality according to an embodiment of the present invention.

As shown in FIG. 1, the apparatus for determining sleep quality according to an embodiment of the present invention includes a sensor unit 11, a filter unit 13, an output unit 15, and a controller 17.

The sensor unit 11 includes at least one of a heartbeat signal for the user's heartbeat, a breathing signal for the user's breathing, and a motion signal for the user's movement according to the magnitude and frequency of the pressure applied by the user. Measure the original signal. According to an embodiment of the present invention, the sensor unit 11 may be formed of a piezoelectric element (piezo element) for outputting by varying the magnitude of the voltage according to the applied pressure. The sensor unit 11 measures the heart rate, the respiratory rate, and the number of movements, and converts the same into an analog signal. The analog signal is converted into a digital signal by an analog-to-digital converter (not shown).

The filter unit 13 separately outputs the heartbeat signal, the respiration signal, and the movement signal from the original signal measured by the sensor unit 11 according to a predetermined frequency. The heartbeat signal, the breathing signal, and the motion signal included in the original signal will be described below. However, since each has a different frequency band, each signal can be detected and output through a filter that passes only each frequency band. For example, if the original signal includes the heartbeat signal and the breathing signal and detects the heartbeat signal, the heartbeat signal is composed of a higher frequency component than the breathing signal, and thus passes the high pass filter passing only the heartbeat signal. Only the heart rate signal can be detected from the original signal.

The control unit 17 measures the heart rate from the heart rate signal output by the filter unit 13, measures the respiratory rate from the respiration signal output by the filter unit 13, and measures the filter unit 13. The number of movements is measured from the motion signal outputted by the controller, and the quality of sleep is determined according to a predetermined value using at least one of the measured heart rate, respiration rate, and movement number. Determination of sleep quality using at least one of the heart rate, respiration rate, and movement rate will be described in detail below.

The output unit 15 outputs the result of the sleep quality determined by the control unit 17. The output unit 15 may inform the user of the determined sleep quality by voice, image, or touch. Therefore, the output unit 15 may be made of at least one of a speaker, a displayer, or a tactile device that allows a user to feel the touch, and may also be formed of a plurality of combinations. When the output unit 15 is a display, the output unit 15 may be formed in various ways such as a light emitting diode (LED), a liquid crystal display (LCD), and an organic luminescence display (EL).

The sleep quality determined by the controller 17 may be output so that the user can directly recognize the output through the output unit 15 that may be further included in the device, but may be transmitted to an external device such as a PC and output. .

2 is a view schematically showing an apparatus for determining sleep quality according to an embodiment of the present invention.

As shown in Figure 2, the sleep quality determination apparatus according to the present invention may be made in the form of a general bed. In addition, the sleep quality determining apparatus according to the present invention includes all devices to support the human body such as chairs, sofas, electric blankets in addition to the general bed to allow the user to sleep.

The sensor unit 11 may be attached to a part where the human body contacts the device in the sleep quality determining apparatus according to the present invention. The sensor unit 11 is attached to the device non-adhesive to the human body so that the user can sleep comfortably without feeling any inconvenience. When the device is made of a bed, it can be arranged on the upper surface of the bed to support and contact the human body. In addition, even when the device has a different shape, the sensor unit 11 may be disposed on a surface capable of detecting pressure by contacting a human body.

In FIG. 2, the sensor unit 11 is disposed substantially parallel to a plurality of rows, but may be arranged in various forms. That is, the sensor unit 11 may be uniformly or non-uniformly disposed on one surface of the sleep quality determining apparatus. The sensor unit 11 may be disposed on a plurality of surfaces other than one surface of the sleep quality determining apparatus, as long as the user's sleep is a part capable of detecting pressure due to breathing, heart rate, and movement.

3 is a block diagram of an apparatus for determining sleep quality according to an embodiment of the present invention.

As shown in FIG. 3, the apparatus for determining sleep quality according to an embodiment of the present invention may further include a storage unit 19. In addition to the storage unit 19, the user can manage the health for a longer time by storing and managing the data on the sleep quality determined from the control unit 17 in units of days, weeks or months There is an advantage. In addition, the sleep quality data may be transmitted from the control unit 17 to an external device such as a PC, and may also be systematically stored and managed on a daily, weekly or monthly basis. In addition, the data on the quality of sleep transmitted to the external device may be a user through the health care server, so that the user can be consulted by a health professional, such as a doctor.

Hereinafter, the operation of the sleep quality determining apparatus according to the present invention will be described in detail.

4 is a diagram illustrating an original signal including a respiration signal and a heartbeat signal.

When the user sleeps in support of the device, such as lying or sitting on the device according to the present invention, the sensor outputs an original signal including the breathing signal and the heartbeat signal due to the breathing and heartbeat of the user. As shown in FIG. 4, the original signal 41 includes a heartbeat signal 42, which is a high frequency component, and a respiration signal 43, which is a low frequency component. In order to measure the heart rate and the respiratory rate of the user, it is necessary to separately detect the heart rate signal 42 and the respiration signal 43 from the original signal 41. A band pass filter may be used to separate the heartbeat signal 42 and the breathing signal 43. That is, in order to detect the heartbeat signal 42 from the original signal 41, the original signal 41 is filtered using a high frequency band pass filter corresponding to the frequency band of the heartbeat signal 42. In addition, in order to detect the respiration signal 43 from the original signal 41, the original signal 41 is filtered using a low frequency bandpass filter corresponding to the respiration signal 43 frequency band. In this way, the heart rate is measured from the heartbeat signal 42 separated from the original signal 41, and the breathing rate is measured from the breathing signal 43.

When the user lie down or sit down and supports the sleep quality determining device, and when the original signal including breathing signal, heart rate signal and movement signal is output from the sensor, the time of sleep is completed and the time is released from the device (weather time) Is defined as the total sleep time. The total sleep time is made up of the pure sleep time during sleep (from the start of sleep to the time when the sleep is completed) and the sleep latency time which is the time from entering the sleep supported by the device.

The user supports the body to the device and continues several movements (backwards) until pure sleep, wherein the sleep latency time occurs from the time the user lies in bed for a predetermined time (about 10 minutes). Say until you don't. The pure sleep time is defined as the time from the end of the sleep latency time to the weather time. The time at which the user wakes up (the time when sleep is completed) is determined as the time at which the original signal is output at a value equal to or less than a predetermined amplitude for a predetermined time after the heavy movement of the user.

On the other hand, whether or not the user's movement during sleep is determined by whether the amplitude of the original signal measured from the sensor unit 11 while taking a sleep becomes a predetermined value or more. When movement occurs, a value other than respiration and heart rate is transmitted. In this case, the amplitude of the original signal is relatively large compared to the amplitude of the original signal including only the respiration signal and the heart rate signal. In general, humans change their body posture about 20 to 60 times during sleep. Therefore, the movement of the user becomes an important factor in determining the quality of sleep, and in the present invention, the quality of sleep is determined by using the number of movements through various embodiments.

If the sleep time and wake up time are not constant, the user unconsciously feels anxious, and the quality of sleep of the user is considerably degraded. Therefore, if the sleep time and the wake-up time is determined and provided to the user, the user can take a more comfortable sleep by reflecting it in the life pattern, which is an important factor in determining the sleep quality of the user. In one embodiment of the present invention, the ratio of pure sleep time to total sleep time is determined as the sleep quality determining element (S1). This is expressed as Equation 1 below.

Here, Sp represents the pure sleep time, and Stt represents the total sleep time.

The pure sleep time is composed of a rapid eye movement (REM) time and a deep sleep (Non-REM) time. Shallow sleep refers to the sleep stage, which does not seem to respond to the surrounding environment, but decreases sensation and reflexes, but can wake up and take a unique sleep posture.

Shallow sleep appears at about 90-minute intervals, about 4 to 6 times overnight, and lasts 10 minutes to 1 hour each. Deep sleep means a sleep state other than the shallow sleep of the pure sleep. On average, deep sleep accounts for 20% of pure water, and the transition from shallow to deep sleep accounts for 50% of pure water. Since the 50% transition time is not easily distinguished into deep or shallow sleep, it is divided into deep or shallow sleep by dividing at an appropriate time interval (for example, by 1: 1 time).

Comparing the deep sleep time and the shallow sleep time, first, the muscle tension is markedly lowered in the shallow sleep state, but in the deep sleep state, only a slight decrease or only a temporary sharp decrease occurs. In terms of heart rate, the heart rate in the shallow state of sleep increases in an irregular and disorganized manner, but decreases in the deep state of sleep. In terms of respiratory rate, in shallow sleep conditions, the respiratory rate increases in an unregular and disturbed fashion, but decreases in deep sleep conditions. In terms of blood pressure, it is not regular and disturbed in the shallow state of sleep, but decreases in the deep state of sleep. In addition, sweating does not appear in shallow sleep, but may also occur in deep sleep.

In the embodiments of the present invention, the respiratory rate and the heart rate are used to distinguish between the deep sleep time and the shallow sleep time, but are not limited thereto. In an embodiment of the present invention, when the respiratory disorder is disturbed (the amplitude change of the respiration signal is severe) than in the deep sleep state, and the respiratory rate increases by 20 to 30%, it is determined as the shallow sleep time during which the shallow sleep state continues. In another embodiment of the present invention, when the heart rate is disturbed (a change in the amplitude of the heartbeat signal is severe) than in the deep sleep state, and the heart rate is increased by 20 to 30%, the sleep time is determined as the shallow sleep time. do.

According to an embodiment of the present invention, using the breathing rate or heart rate to determine the deep sleep time, which is the time for the user to take a deep sleep, and determine the sleep quality of the ratio of the determined deep sleep time to the pure sleep time The element S2 is determined. This may be expressed as Equation 2 below.

Here, Snr represents the deep sleep time (Non-REM), and Sp represents the pure sleep time. Equation 2 is based on the fact that the quality of sleep deteriorates when the ratio of deep sleep time to pure sleep time is lowered to 50% or less. That is, this sleep quality determining element (S2) has a value of 1 collectively when the ratio is 50% or more, and when the ratio is less than 50%, it is determined according to the ratio of deep sleep time and pure sleep time.

Apnea is when the airway is completely blocked during sleep and the breathing stops for more than 10 seconds or more than 5 times per hour or more than 30 times for 7 hours. Snoring is a symptom that is caused by the sound of the surrounding fluid area shaking as the air flows through the narrowed airways, not completely stopping breathing. Snoring is also a type of apnea. Apnea can be obtained using the respiratory rate measured by the sensor unit 11.

Abnormal breathing refers to abnormal breathing rate. Abnormal breathing includes poor breathing, western breathing, hyperventilation and dyspnea. When the respiratory rate is more than 24 times per minute, it is called an empty breathing state. This symptom occurs in an emotional state such as excitement or fear. Hyperventilation is when the respiratory rate is more than 30 to 50 times per minute, and this symptom occurs with respiratory disease (eg bronchial or asthma), anemia, weakness, bleeding, exercise or increased body temperature. When the respiratory rate is less than 10 times per minute is called a West Respiratory state, this symptom is caused by an increase in intracranial pressure and high doses of sedatives or drugs. Increased respiratory rate due to other airway lung disease, metabolic, cerebral encephalopathy is called dyspnea.

The controller 17 determines whether apnea and abnormal breathing are performed according to the predetermined value using the breathing rate. In this specification, the time for which the apnea and abnormal breathing are sustained is defined as the awakening time. That is, the awakening time is the sum of the apneas and abnormal breaths showing the respiratory rate outside the predetermined respiratory rate range. In addition, since awakening is caused by apnea and abnormal breathing, the number of awakenings can be determined from apnea and abnormal breathing. In addition, the arousal may be determined by the movement caused by apnea and abnormal breathing, so that the number of the arousal may be determined using the movement number. In an embodiment of the present invention, the wake-up time is applied in minutes, and the sum of the wake-up times and the wake-up time minus the pure sleep time is a percentage of the sleep quality determinant of sleep quality (S3). ) In other words, the relationship between the awakening time (Sat), the awakening frequency (Saf), the pure sleep time (Sp) and the sleep quality determining element (S3) is expressed by the following equation (3).

On the other hand, the quality of sleep greatly depends on what kind of sleep you were in right after waking up (just before sleep). Generally, waking up in a shallow state of sleep can improve sleep quality than waking up in a deep state of sleep. Therefore, according to an embodiment of the present invention, after determining whether a person is in a shallow sleep state during waking using the respiratory rate, heart rate, or a combination of the respiratory rate and heart rate, and imposing a predetermined value in the case of a shallow sleep state during waking, It is determined by the quality determining element (S4). For example, the predetermined value is set to 1 when waking up in a shallow sleep state, and set to 0 when waking up in a non-shallow sleep state as a quality determining factor of sleep. This may be expressed as Equation 4 below.

Further, according to an embodiment of the present invention, the quality of sleep may be calculated as a score by combining the sleep quality determining factors described above. That is, the controller 17 obtains the first element S1 as a ratio of the pure sleep time to the total sleep time, and in this case, the total sleep time is lying or leaning on the device by the user. A second time (S2) as a ratio of the deep sleep time to the pure sleep time, the sum of the sleep latency time, which is the time from the time the original signal is output to the time of sleep Determining the awakening time that is the sum of the apnea and abnormal breathing showing the respiratory rate outside the predetermined respiratory rate range using the respiratory rate, and determines the number of awakenings caused by the apnea and abnormal breathing, The third element (S3) is obtained by the ratio of the pure sleep time minus the awakening time and the awakening frequency to the pure sleep time, and determines whether the sleep state is shallow when the sleep is completed. And determine a fourth element (S4) having a value of 1 when the shallow sleep state. Subsequently, the controller 17 sets predetermined weights for the obtained first element S1, the second element S2, the third element S3, and the fourth element S4, and adds them to the water surface. Determine the quality of

According to an embodiment of the present invention, the predetermined weight is 20, 30, 20 for the first element S1, the second element S2, the third element S3, and the fourth element S4, respectively. And 30, the sleep quality P is determined as shown in Equation 5 below.

5 is a flowchart illustrating a method of determining sleep quality according to an embodiment of the present invention.

As shown in FIG. 5, in the biometric information measuring step S51, a heartbeat signal for the user's heartbeat, a breathing signal for the user's breath, and the user according to the magnitude and frequency of the pressure applied by the user to the sensor unit. Measure the original signal including at least one of the motion signal for the movement of. According to an embodiment of the present invention, the sensor unit may be formed of a piezoelectric element (piezo sensor).

In the filtering step (S52), the heartbeat signal, the respiration signal, and the movement signal are separated from each other according to a predetermined frequency and output from the original signal measured by the sensor unit.

In the sleep quality determination step (S53), the controller measures the heart rate from the heart rate signal output by the filter unit, measures the respiratory rate from the breath signal output by the filter unit, and outputs the movement by the filter unit. The number of movements is measured from the signal, and sleep quality is determined according to a predetermined value using at least one of the measured heart rate, respiration rate, and movement number.

In the output step (S54) outputs the result of the sleep quality determined by the control unit to the output unit.

According to an embodiment of the present invention, in the step of determining the quality of sleep (S53), the controller determines a deep sleep time which is a time at which the user takes a deep sleep according to a predetermined value from the measured heart rate or respiratory rate, The pure sleep time, which is the time the user sleeps, is determined according to a predetermined value from the measured number of movements, and a predetermined value is determined from at least one of the heart rate, the respiratory rate, the movement number, the deep sleep time, and the pure sleep time. Determine the quality of your sleep.

In addition, according to an embodiment of the present invention, in the embodiment according to FIG. 5, in the sleep quality determination step (S53), the total sleep time is a time point at which the original signal is output from the sensor unit by the user lying or leaning on the device. A sleep latency time, which is a time from sleep to a point of time, and the pure sleep time, wherein the controller is expressed by the ratio of the pure sleep time Sp to the total sleep time Stt; According to the 1 to determine the quality of sleep (S1).

Further, according to an embodiment of the present invention, in the sleep quality determining step (S53), the control unit is expressed as a ratio of the deep sleep time (Snr) to the pure sleep time (Sp). According to the equation (2) to be used as an element (S2) for determining the quality of sleep.

In addition, in one embodiment of the present invention, the control unit in the sleep quality determination step (S53) of the sleep apnea and abnormality showing a respiratory rate other than a predetermined respiratory range using the respiratory rate Awakening time, which is the sum of breathing time, is determined, and the number of awakenings caused by the apnea and abnormal breathing is determined, and the pure sleep time is the ratio of the pure sleep time minus the awakening time and the awakening frequency. According to Equation 3 to be expressed as an element (S3) for determining the quality of sleep.

Further, according to an embodiment of the present invention, in the embodiment according to FIG. 5, in the sleep quality determination step (S53), the controller determines whether the sleep state is a shallow sleep state, and when the shallow sleep state is a predetermined value. Use it as a determinant of sleep quality.

에 따라 제4요소(S4) 구하며, 상기 구해진 제1요소(S1), 제2요소(S2), 제3요소(S3) 및 제4요소(S4)에 대해 각각 소정의 가중치를 설정한 후 합산하여 수면의 질을 결정한다.One embodiment of the present invention determines the quality of sleep by combining the factors that determine the quality of sleep in the above embodiments. That is, in the sleep quality determination step (S53), the first element (S1) is obtained as the ratio of the pure sleep time to the total sleep time, in which case the total sleep time is lying or leaning on the device by the user It is made up of the sum of the sleep latency time and the pure sleep time, which is the time from the point of time when the original signal is output from the sensor to the time of sleep, and the second element in the ratio of the deep sleep time to the pure sleep time (S2) to determine the awakening time, which is the sum of the apnea and abnormal breaths showing the respiratory rate outside the predetermined respiratory rate range using the respiratory rate, and determine the number of awakenings caused by the apnea and abnormal breathing. The third element (S3) is obtained by the ratio of the pure sleep time minus the awakening time and the awakening frequency to the pure sleep time. Determine whether the state, and the following equation

The fourth element S4 is obtained according to the above equations, and a predetermined weight is set for each of the obtained first element S1, the second element S2, the third element S3, and the fourth element S4, and then summed. To determine your sleep quality.

According to another embodiment of the present invention, in the above embodiment, predetermined weights for the first element S1, the second element S2, the third element S3, and the fourth element S4 are 20, The quality of sleep P is determined according to Equation 5 by using 30, 20, and 30.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

Claims (18)

A sensor for measuring an original signal including at least one of a heartbeat signal for the user's heartbeat, a breathing signal for the user's breathing, and a motion signal for the user's movement according to the magnitude and frequency of pressure applied by the user part;
A filter unit for dividing the heartbeat signal, the respiration signal, and the movement signal from each other according to a predetermined frequency from the original signal measured by the sensor unit;
The heart rate is measured from the heart rate signal output by the filter unit, the respiratory rate is measured from the respiration signal output by the filter unit, the motion number is measured from the motion signal output by the filter unit, and the measured A controller configured to determine sleep quality according to a predetermined value using at least one of a heart rate, a respiratory rate, and a movement number; And
An output unit for outputting a result of the sleep quality determined by the control unit,
The sleep quality may include a first element S1 obtained by dividing the pure sleep time, which is the time that the user sleeps, by the total sleep time, a second element S2 which is a ratio of deep sleep time to the pure sleep time, A third element S3 which is a ratio of the pure sleep time minus the awakening time and the awakening frequency, and a fourth element S4 corresponding to the determination of whether the sleep state is a shallow sleep state. Determined by summing and then setting predetermined weights for,
The deep sleep time is determined as the time for the user to take a deep sleep according to a predetermined value from the measured heart rate or respiration rate,
The pure sleep time is determined as the time when the user sleeps according to a predetermined value from the measured number of movements,
The total sleep time is determined by the sum of the sleep incubation time and the pure sleep time, which is the time from when the user lies down or leans on the sensor unit to the point of time when the original signal is output from the sensor unit and goes to sleep.
The awakening time is determined by the sum of the apnea and abnormal breathing showing the respiratory rate outside the predetermined respiratory range using the respiratory rate,
The awakening frequency is determined by the number of times caused by the apnea and abnormal breathing,
The sleep quality of sleep is determined by using the heart rate or the respiratory rate.
The method of claim 1,
And said sensor portion is made of a piezoelectric element.
delete delete The method of claim 1,
The control unit is represented by the following equation expressed as the ratio of the deep sleep time to the pure sleep time

The quality of sleep is determined, wherein Snr represents the deep sleep time, and Sp represents the pure sleep time.
The method of claim 1,
The control unit may be expressed by the following equation expressed by a ratio of the pure sleep time minus the awakening time and the awakening frequency.

Sleep quality is determined, wherein Sp represents the pure sleep time, Saf represents the awakening frequency, and Sat represents the awakening time.
delete The method of claim 1, wherein the control unit,
When the sleep is completed, it is determined whether or not the shallow sleep state, the following equation

And a fourth element (S4) according to the above.
The method of claim 1,
The predetermined weights for the first element S1, the second element S2, the third element S3, and the fourth element S4 are 20, 30, 20, and 30, respectively.

Sleep quality determination device characterized in that for determining the quality of sleep.
The sensor unit measures an original signal including at least one of a heartbeat signal for the user's heartbeat, a breathing signal for the user's breathing, and a motion signal for the user's movement according to the magnitude and frequency of the pressure applied by the user. Measuring biometric information;
A filtering step of dividing the heartbeat signal, the respiration signal, and the movement signal from the original signal measured by the sensor unit according to a predetermined frequency to a filter unit;
Measuring a heart rate from the heart rate signal output by the filter unit with a control unit, measuring the respiratory rate from the respiration signal output by the filter unit, measuring the number of movements from the motion signal output by the filter unit, A sleep quality determining step of determining sleep quality according to a predetermined value using at least one of measured heart rate, respiration rate, and movement number; And
An output step of outputting a result of sleep quality determined by the control unit to an output unit,
The sleep quality may include a first element S1 obtained by dividing the pure sleep time, which is the time that the user sleeps, by the total sleep time, a second element S2 which is a ratio of deep sleep time to the pure sleep time, A third element S3 which is a ratio of the pure sleep time minus the awakening time and the awakening frequency, and a fourth element S4 corresponding to the determination of whether the sleep state is a shallow sleep state. Determined by summing and then setting predetermined weights for,
The deep sleep time is determined as the time for the user to take a deep sleep according to a predetermined value from the measured heart rate or respiration rate,
The pure sleep time is determined as the time when the user sleeps according to a predetermined value from the measured number of movements,
The total sleep time is determined by the sum of the sleep incubation time and the pure sleep time, which is the time from when the user lies down or leans on the sensor unit to the point of time when the original signal is output from the sensor unit and goes to sleep.
The awakening time is determined by the sum of the apnea and abnormal breathing showing the respiratory rate outside the predetermined respiratory range using the respiratory rate,
The awakening frequency is determined by the number of times caused by the apnea and abnormal breathing,
The shallow sleep state is determined using the heart rate or the respiratory rate sleep quality determination method.
The method of claim 10,
The biological information measuring step of the sleep quality determination method, characterized in that for measuring the original signal by the sensor unit consisting of a piezoelectric element.
delete delete The method of claim 10,
In the sleep quality determination step, the following equation expressed by the controller as the ratio of the deep sleep time to the pure sleep time

Sleep quality is determined, wherein Snr represents the deep sleep time, Sp represents the pure sleep time.
The method of claim 10,
In the sleep quality determining step, the controller expresses a ratio of the pure sleep time to a value obtained by subtracting the awakening time and the awakening frequency from the pure sleep time.

Sleep quality is determined, wherein Sp represents the pure sleep time, Saf represents the awakening frequency, and Sat represents the awakening time.
delete The method of claim 10, wherein in the sleep quality determining step,
When the sleep is completed, it is determined whether or not the shallow sleep state, the following equation

According to claim 4, wherein the fourth element (S4) is determined.
The method of claim 10,
The predetermined weights of the first element S1, the second element S2, the third element S3, and the fourth element S4 are 20, 30, 20, and 30, respectively. expression

Sleep quality determination method characterized in that the sleep quality.

Images