RU161679U1 - DEVICE FOR SLEEP CONTROL WITH A COMFORT WAKE-UP FUNCTION - Google Patents

Abstract

1. A device for monitoring sleep with the function of providing comfortable waking up, comprising a series-connected unit for recording data from sensors and a data processing unit, as well as an awakening signal generation unit, a comparison unit, the first input of which is connected to the output of the data processing unit, and the output is connected to the input the unit for generating wake-up signals, and the unit for setting the minimum and maximum wake-up times, the output of which is connected to the second input of the comparison unit, while the data recording unit from the sensor in made with the possibility of receiving and recording signals from the sensor of the respiratory cycle of a sleeping person, characterized in that the data recording unit from the sensors is configured to receive and register signals from the movements of the lower extremities of the sleeping person, and the data processing unit is configured to compare with previously determined signs phases of slow sleep in the respiratory cycle and with signs of a phase of slow sleep in the dynamics of movements of the lower extremities and subject to their noticeable difference in fixation and phases of "fast" sleep and the formation of a preliminary signal to turn on the means of awakening. 2. The device according to claim 1, characterized in that the minimum and maximum wake-up time setting unit is equipped with a Bluetooth wireless module with the ability to provide input settings from external mobile devices with applications based on iOS or Android.

Description

Sleep monitor with comfort wake up function

The utility model relates to electronic equipment and specialized computing devices and can be used to create devices that provide control of parameters characterizing a person’s sleep and determine on this basis the time of comfortable waking up. The proposed technical solution is a specialized device of electronic and computer technology, containing elements (blocks) and the connections between them, which are in functional and constructive unity and placed in a limited space with the possibility of execution in a single building.

It is known that a healthy person’s sleep is an alternation of the so-called “slow” and “fast” sleep phases (REM sleep phases), which are repeated 4 to 6 times during a healthy person’s sleep. It has been experimentally confirmed that the REM phase is the most favorable for awakening. To ensure comfortable sleep conditions, the urgent task is to develop technical means designed to determine, directly in the process of a person’s sleep, a phase favorable for waking up at a predetermined time interval with the ability to control waking means generating a sound or other signal by which a person wakes up.

The known method and the corresponding device for determining the phase of a person’s sleep, favorable for waking up [RU 2522400, C1, АВВ 5/08, АВВ 5/103, А61В 8/02, 07/10/2014], characterized in that during sleep using a pulse wave sensor and at least one motion sensor mounted on the human body, the pulse wave signal and the presence of human limb movements are recorded, based on the pulse wave signal, the values of RR-intervals and respiratory rate are determined, and the onset and end of the sleep phase favorable for awakening is judged by nature scheniyu function F ^(Δ t _i), which value is determined over defined time intervals ^Δ t _i, where i -poryadkovy timeslot number as:

F ( ^Δ t _i ) = - K ₁ P ₁ -K ₂ P ₂ -K ₃ P ₃ + K ₄ P ₄ + K ₅ P ₅ + K ₆ P ₆ ,

where: P ₁ - the average value of RR-intervals for the time interval ^Δ t _i ;

P ₂ - the minimum value of RR-intervals for the time interval ^Δ t _i ;

P ₃ - the maximum value of RR-intervals for the time interval ^Δ t _i ;

P ₄ - the standard deviation of the RR intervals for the previous time interval from 3 minutes to 20 minutes;

P ₅ - the average value of the respiratory rate for the time interval ^Δ t _i ;

P ₆ - the average number of movements of the human limbs for the previous time interval from 0.5 minutes to 10 minutes;

K ₁ -K ₆ weighting factors characterizing the contribution of the corresponding parameter P ₁ -P ₆ to the value of the function F ( ^Δ t _i ).

In this method, for the parameter P ₁ measured in ms, the value of the weight coefficient K _{1 is} selected in the range from 0.6 ms ^-1 to 3 ms ^-1 , for the parameter P ₂ measured in ms, the value of the weight coefficient K _{2 is} selected in the range from 0.1 ms ^-1 to 0.7 ms ^-1 , for parameter P ₃ measured in ms, the value of the weight coefficient K _{3 is} selected in the range from 0.01 ms ^-1 to 0.3 ms ^-1 , for parameter P ₄ , measured in ms, the value of the weight coefficient K _{4 is} chosen in the range from 0.5 ms ⁻¹ to 3 ms ⁻¹ , for parameter P ₅ measured in min ⁻¹ , the value of the weight coefficient K _{5 is} chosen in the range zone from 1 min to 10 min, and for the parameter P _{6 the} value of the weight coefficient K _{6 is} chosen in the range from 5 to 50.

The determination of the sleep phase that is favorable for awakening is realized in such devices using two sensors: a pulse wave sensor and a sensor capable of responding to the movement of an arm or leg, a motion sensor, for example an accelerometer. Sensors can be installed on the human body separately from each other. For example, a motion sensor can be mounted on a hand or foot, and a pulse wave sensor can be mounted on a wrist or forearm. As pulse wave sensors, piezoelectric, strain gauge or optical sensors can be used.

During a person’s sleep, the values of RR-intervals and respiration rate are determined based on the detected pulse wave signal. Since the pulse wave signal is a periodic signal that changes synchronously with the heartbeats, the time intervals between any characteristic point of the pulsogram (for example, the peak value of the signal or its derivative) exactly correspond to the RR intervals. The pulse wave signal, in addition to the aforementioned periodic changes corresponding to the dynamics of blood supply for each cardiac cycle, includes a low-frequency component corresponding to the respiratory cycle. Instrumental methods for determining the respiratory rate based on low-pass filtering of the respiratory component of the pulse wave signal are also well known in the art.

The disadvantage of this method and its corresponding device is its extremely limited scope, since it involves the use of sensors placed on the body of a sleeping person, as well as the relatively low accuracy caused by the subjective nature of the choice of weighting factors from a wide range of recommended values.

A device for adjusting the type of sleep is also known [RU 2340365, C2, A61M 21/00, 12/10/2008], comprising a physiological characteristics monitor, a sensor of stimulus generator, a processor functionally connected to a physiological characteristics monitor and a sensor of sensory generator, moreover, the processor is intended for receiving an input signal from a physiological characteristic monitor indicating the first stage of sleep of the sleeper, and providing an output signal for the sensor stimulus generator to cause the generator to generate the sensor stimulus at least the first sensory stimulus in response to an input signal received from a physiological characteristic monitor to impose a sleep rhythm on the sleeper and to change the first sensory stimulus to transfer the sleeper from the first stage of sleep to the second stage of sleep, while the physiological characteristic monitor designed to monitor at least one physiological characteristic of a sleeping person, which contains at least one indicator selected from the group consisting of heart rate, arterial phenomenon, such as brain waves, muscle tension, eye movement, respiration, body temperature, blood flow, blood oxygen level, blood chemistry, effort during respiration, body position and body motion.

The disadvantage of this device is the relatively high complexity, eliminating the possibility of mass production, as well as a relatively narrow scope, since it can be used to impose a type of sleep and does not allow to determine and implement comfortable conditions for awakening a person.

In addition, the device “Withings Aura Smart Sleep System” is known, http://medgadgets.ru/shop/withings-aura-smart-sistema-dlja-sna-umnyj-bidil-nik.html, 01/07/2014], comprising a series-connected unit for recording data from sensors, configured to receive and register signals from a motion sensor of a sleeping person, a breathing sensor of a sleeping person, a heart rate sensor of a sleeping person, as well as sound sensors, temperature and light level in a bedroom, a data processing unit and an awakening signal generating unit.

The disadvantage of the device is the relatively narrow functionality, because the human wake-up signal is formed solely on the basis of data obtained during the person’s sleep period, and social conditions are not taken into account, in accordance with which, as a rule, there are requirements for a possible wake-up period, related to the work schedule, study and family circumstances. All this reduces the accuracy of the device.

The closest in technical essence to the claimed utility model is a device [US 7248915, September 01, 2005], comprising a series-connected data recording unit from sensors, configured to receive and register signals from a respiratory cycle sensor and a sleeping person motion sensor, a data processing unit, a wake-up signal generating unit, a comparison unit, the first input of which is connected to the output of the data processing unit, and the output is connected to the input of the wake-up signal generating unit, and the task unit is minimally nth and maximum waking time, the output of which is connected to the second input of the comparison unit.

The disadvantage of this device is the relatively low accuracy, since the decision on the occurrence of a “fast” sleep phase and the formation of a signal to turn on the means of awakening is made only on the basis of data from sensors configured to receive and register signals from a respiratory cycle sensor and a sleeping person motion sensor. In this case, the signal from the motion sensors of the lower extremities of the sleeping person and the peculiarities of the formation of sensor signals in various phases of sleep are not taken into account. This reduces the accuracy of the device and can lead to erroneous operation.

The problem that is solved in the proposed utility model is to develop a device that is convenient for use and has high accuracy due to the ability to take into account when generating an awakening signal not only data received from sensors made with the possibility of receiving and recording signals from a respiratory cycle sensor and motion sensor of a sleeping person, but also from motion sensors of the lower extremities of a sleeping person, taking into account the peculiarities of the formation of signals of these sensors in various phases of sleep.

The required technical result is to increase the accuracy of the device.

The problem is solved, and the required technical result is achieved by the fact that, into a device containing a series-connected unit for recording data from sensors and a data processing unit, as well as an awakening signal generation unit, a comparison unit, the first input of which is connected to the output of the data processing unit, and the output is connected to the input of the wake-up signal generation unit, and the unit for setting the minimum and maximum wake-up times, the output of which is connected to the second input of the comparison unit, while the register block the data from the sensors is configured to receive and register signals from the sensor of the respiratory cycle of a sleeping person, according to a utility model, the data registration unit from the sensors is configured to receive and register signals from movements of the lower extremities of the sleeping person, and the data processing unit is configured to compare with predefined signs of the phase of slow sleep in the respiratory cycle and with signs of the phase of slow sleep in the dynamics of the movements of the lower extremities and subject to their noticeable exce The fixation of the occurrence of the “fast” sleep phase and the formation of a preliminary signal to turn on the means of awakening.

In addition, the required technical result is achieved in that the unit for setting the minimum and maximum wake-up times is equipped with a Bluetooth wireless module with the ability to provide input settings from external mobile devices with applications based on iOS or Android.

The drawing shows:

in FIG. 1 is a functional diagram of a device for monitoring sleep with the function of providing comfortable waking up;

in FIG. 2 is an example of the use of a device for monitoring sleep with the function of ensuring comfortable waking up together with the mattress and with sensors located in the mattress.

A device for monitoring sleep with the function of ensuring comfortable awakening (Fig. 1) contains serially connected unit 1 for recording data from sensors, which is configured to receive and register signals from a sensor of the respiratory cycle of a sleeping person and a motion sensor of the lower extremities of a sleeping person, and processing unit 2 data, as well as block 3 of the formation of awakening signals.

In addition, the device for monitoring sleep with the function of providing comfortable wake-up comprises a comparison unit 4, the first input of which is connected to the output of the data processing unit 2, and the output is connected to the input of the wake-up signal generating unit 3, as well as a unit 5 for setting the minimum and maximum wake-up time, the output of which is connected to the second input of the comparison unit 4.

Block 5 for setting the minimum and maximum wake-up times can be equipped with a Bluetooth wireless module with the ability to provide input settings from external mobile devices with applications based on iOS or Android.

In FIG. 2 shows an example of the practical use of the claimed device for sleep control with the function of providing comfortable wake-up, which shows the image of a complex device in which the claimed device is one of the elements (block 9) under its declared name, and the rest of the elements - a mattress and sensors, are not included in the claimed device and serve to explain the use of the claimed device.

In FIG. 2 shows a mattress 6 with an outer shell, for example, in the form of a mattress cover or a layer of the inner material of the mattress, under which there is a sensor 7 of the respiratory cycle of a sleeping person, located in the upper part of the mattress 6 in the area of the chest of the sleeping person, sensor 8 of the movements of the lower extremities of the sleeping person located at the bottom of the mattress 6 in the area of the feet of a sleeping person, and a device 9 for monitoring sleep with the function of providing comfortable waking up, which can be placed either in the mattress 6 or near go.

The data processing unit 2 can be made in the form of a programmable specialized computing tool, the main functions of which are described in detail below, which allows its programming (tuning) and making the necessary settings.

The sensor 7 of the respiratory cycle of a sleeping person can be made in the form of a piezoelectric sensor sensitive to changes in pressure, a strain gauge or a sensitive resistor, the signal at the output of which emits a low-frequency component that characterizes the sleeping cycle of a sleeping person using a low-pass filter.

In a similar way, a sensor 8 of the movements of the lower extremities of a sleeping person can be manufactured, i.e., in the form of either a piezoelectric sensor or a strain gauge or a sensitive resistor, the signal at the output of which emits a low-frequency component using a low-pass filter , characterizing the dynamics of the movements of the lower extremities of a sleeping person.

Block 3 of the formation of awakening signals can be made in the form of a sound generator, vibrator or other device convenient for waking up a person.

Block 4 comparison is a standard element of electronic and computer technology, and block 5 sets the minimum and maximum wake-up times and block 1 for recording data from sensors can be made in the form of blocks of RAM.

A device for monitoring sleep with the function of providing a comfortable wake up as follows.

It is assumed that the data recording unit 1 is configured to receive and register signals from the sleeping person’s respiratory cycle sensor 7 and the sleeping person’s lower limb motion sensor 8, which can be placed in the mattress 6 with an outer shell, for example, in the form of a mattress cover or a layer of inner material a mattress, under which there is a sensor 7 of the respiratory cycle of a sleeping person, located in the upper part of the mattress 6 in the area of the chest of the sleeping person, and a sensor 8 of the movements of the lower extremities of the sleeping person man placed in the bottom of the mattress 6 feet in finding a sleeping man.

The minimum and maximum wake-up time settings are entered into the memory of block 5 for setting the minimum and maximum wake-up times, within which the sleep phase is determined, which is comfortable for waking up, which ensures the inclusion of block 3 for generating wake-up signals.

In addition, in the data processing unit 2, the setting of the time moment is introduced, starting from which the sleep phases are determined, which, as a rule, does not apply to the beginning of falling asleep, but is also not close to the minimum waking time based on the fact that the number of sleep phase changes occurs during sleep 4-6 times.

The respiratory cycle sensor 7 forms a picture of the breathing of a sleeping person and feeds the generated signal to the sensor data recording unit 1, in which the signal is averaged over the phases of slow sleep (i.e., the high-frequency components of the signal are cut off in the low-frequency part of the spectrum of the respiratory cycle), which allows signs of a slow sleep phase in the respiratory cycle. The sensor signal of 8 movements of the lower extremities is also used in a similar way, which allows one to form signs of the slow sleep phase according to the dynamics of the movements of the lower extremities.

In the data processing unit 2, the signals from the sensor 3 of the respiratory cycle and from the sensor 4 of the movements of the lower extremities are compared with previously determined signs of the phase of slow sleep in the respiratory cycle and with signs of the phase of slow sleep in the dynamics of the movements of the lower extremities.

If the current signals from these simultaneously differ markedly from them, for example, the frequency of the respiratory cycle and the frequency and dynamics of the movements of the lower extremities increase, then the data processing unit 2 conditionally decides on the occurrence of a “fast” sleep phase and generates a preliminary signal for activating the means of awakening. This preliminary signal is compared in block 4 of the comparison with the minimum and maximum waking times. If the preliminary signal falls into the interval between the minimum and maximum waking times, then at the output of the comparison unit 4 a logical unit signal is generated, by which the means of waking up the unit 3 are turned on. This ensures that the sleeping person is awakened in the comfortable phase of "fast" sleep.

If the “fast” sleep phase does not occur within the settings between the minimum and maximum waking times, then one of the possible outcomes is the inclusion of means of waking up according to the maximum time setting.

The settings can be reconfigured in block 5 using external mobile devices with applications based on iOS or Android operating systems, for which control unit 5 is equipped with a Bluetooth wireless module.

Thus, due to the improvement of the known device, the required technical result is achieved, which consists in increasing the accuracy of its operation by providing the ability to take into account, when generating an awakening signal, not only data received from sensors configured to receive and register signals from the respiratory cycle sensor and motion sensor a sleeping person, but also from motion sensors of the lower extremities of a sleeping person, taking into account the peculiarities of the formation of the signals of these sensors in various phases sleep

Claims (2)

1. A device for monitoring sleep with the function of providing comfortable waking up, comprising a series-connected unit for recording data from sensors and a data processing unit, as well as an awakening signal generation unit, a comparison unit, the first input of which is connected to the output of the data processing unit, and the output is connected to the input the unit for generating wake-up signals, and the unit for setting the minimum and maximum wake-up times, the output of which is connected to the second input of the comparison unit, while the data recording unit from the sensor in made with the possibility of receiving and recording signals from the sensor of the respiratory cycle of a sleeping person, characterized in that the data recording unit from the sensors is configured to receive and register signals from the movements of the lower extremities of the sleeping person, and the data processing unit is configured to compare with previously determined signs phases of slow sleep in the respiratory cycle and with signs of a phase of slow sleep in the dynamics of movements of the lower extremities and subject to their noticeable difference in fixation and phases of "fast" sleep and the formation of a preliminary signal to turn on the means of awakening. 2. The device according to claim 1, characterized in that the unit for setting the minimum and maximum wake-up time is equipped with a Bluetooth wireless module with the ability to provide input settings from external mobile devices with applications based on iOS or Android.

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