RU201833U1 - Device for recording human biophysical parameters during sleep - Google Patents

Abstract

The utility model relates to devices for recording and monitoring the most important biophysical parameters of a person during sleep, namely, devices with the ability to be embedded in mattresses of various configurations at the production stage in order to track various biophysical parameters of a person during sleep and improve the quality of sleep. The device includes a block of sensitive sensors for converting the user's movements (breathing movements, heartbeats, body movements) into an analog electrical signal and a processing unit consisting of a plastic case, a printed circuit board and a storage battery (accumulator battery). The block of sensitive sensors consists of at least one piezoelectric sensor and at least one bending sensor. The piezoelectric sensor is made in the form of a piezo-sensitive tape and is designed to record the pulse rate, respiratory rate, movements of the user during sleep (determination of the sleep phase). The bend sensor is made in the form of a passive multichannel film sensor and is a polyamide-based film with built-in sensing elements that change their resistance as the tape bend radius changes. The flexion sensor is designed to detect the user's sleeping posture and the number of night lifts. The processing unit is made with the possibility of analog and digital processing of the output signals of the declared sensitive sensors. The technical result of the proposed utility model is to ensure high accuracy in determining the important biophysical parameters of a person in the absence of a negative impact on the characteristics and properties of the mattress and while ensuring the compactness of the device and reducing the complexity of its integration into mattresses of various configurations. 5 h. p. f-ly, 3 ill.

Description

The utility model relates to devices for recording and monitoring the most important biophysical indicators of a person during sleep, namely, devices with the ability to be embedded in mattresses of various configurations at the production stage in order to track various biophysical indicators of a person during sleep and improve the quality of sleep.

At present, intelligent systems built into mattresses are widely represented, equipped with special sensitive sensors that allow collecting primary information about sleep, namely, to monitor the heart rate, respiratory rate, body temperature, posture position in sleep, monitor sleep phases, analyze the information received, and offer recommendations for improving sleep quality.

The following technical solutions are known from the prior art.

Known is a device for the non-contact registration of vital signs of a patient in a continuous mode in a prone state (patent RU 2698441), which includes a housing made in the form of a plastic molded form and fixed to the patient's bed, a controller located directly in the housing, and a sensor represented by a piezoelectric sensor of the family EmfitR-Series, located in a cover that is fixed to the bed under the mattress in the area of the patient's shoulder blades. The controller includes signal amplifiers (U1) and (U2) and a signal recording device (URS) when the power is turned on, which connects to the cloud service using a secure SSL connection and at the level of the application data transfer protocol in continuous mode transmitting vital signs to the cloud application, such as pulse rate per minute, breathing rate per minute, hemodynamic activity index, motor activity index, intervallogram. In this case, the sensor is connected to the amplifier (U1) by a coaxial cable.

A feature of this device is that it belongs to medical technology and is primarily aimed at continuous monitoring of the health status of sick people and children under medical supervision. Therefore, the specificity of this technical does not allow the use of this device to a wide range of consumers.

A known technical solution is an electric bed (patent RU 2722634), which includes a tracking module mounted on the upper part of the bed body and a wireless communication module.

The tracking module is configured to determine such parameters as body temperature, heart rate, respiratory rate, snoring intensity, breathing intensity, number of cases of tossing and fidgeting in bed.

From the tracking module, information about the user's vital signs is sent to the wireless communication module configured to send tracking data to the server, while the server receives the setting signal sent by the terminal device (for example, a gadget) and sends an alarm when the tracking data goes out of range threshold values set in the setting signal, while the wireless communication module is configured to receive data on the state of the electric bed and send said data to the server.

The fact that the technical solution is an electric bed with the ability to generate a signal about alarming indicators of the user's vital activity allows us to conclude that its use is mainly preferable in medical institutions and is not designed for a wide range of consumers.

There is a known system for monitoring biophysical parameters of a person during sleep (US patent 2019380653), which is an "intelligent" mattress, in which one or more force sensors are built to detect movements (breathing, heartbeats, body movements) and determine the user's posture during sleep ... Additionally, temperature and humidity (sweating) sensors of the user's body can be built into the mattress.

In the case of a double mattress configuration, the sensors are divided into two sets, each associated with the corresponding side of the mattress (left and right), with each set of sensors designed to receive data associated with one user.

In one alternative embodiment, a set of force sensors is placed on the corresponding side of the mattress (left and right) as follows: three force sensors in the user's head / chest region, three force sensors in the user's lumbar region, three force sensors in the user's legs.

A set of sensors for each user is connected to the corresponding microcontroller. In turn, microcontrollers are connected to the main processor.

The biophysical data of the user is transmitted using a wireless communication module associated with the main processor, and the communication module can be configured to transmit data via wireless Wi-Fi, Bluetooth, 3G, 4G or Long Term Evolution (LTE).

The disadvantage of this technical solution is that the proposed option for placing the force sensors does not provide sufficient coverage of the sleeping area, which can lead to the problem of signal loss when the user moves across the mattress during sleep. And also the use of force sensors to determine the user's posture in a dream provides high accuracy only when a large number of force sensors are distributed over the mattress in order to build a pressure distribution map, which can lead to increased labor intensity and energy consumption of signal processing algorithms and can have a negative impact on the properties of the mattress. cause discomfort to the user.

Known system for monitoring biophysical parameters of a person during sleep, which allows you to determine the heart rate and respiration of the user, the phase of sleep and register the user's movements in sleep (US patent 2016015315).

The system consists of a processing unit located near the user's bed, a sensor unit built into the user's bed and a control unit.

The sensor unit includes an electronic unit and a sensor module including sensors for detecting changes in pressure generated by the user's body (for example, piezoelectric and piezoresistive sensors) and additionally sensors for determining the user's body temperature. In the preferred embodiment, the sensitive module is made in the form of a "pillow" located on the mattress or under it in the region of the user's chest.

User data from the sensing module can be transmitted via the electronic module to the processing unit via BlueTooth, Wi-Fi or other suitable wireless means. Alternatively, the communication can be wired with the connection of the sensor unit to the processor module using a wire and USB ports.

The processing device may contain the following components: a microphone for recording and recording sounds surrounding the user, a light sensor for detecting the level of illumination in a room, a temperature sensor for detecting the ambient temperature, and an air quality sensor. The declared sensors are connected to a control unit capable of processing and storing information received from the declared sensors. And also the processing device includes a light source and a speaker for realizing a light and sound program corresponding to a certain phase of the user's sleep, aimed at ensuring quality sleep.

Alternatively, data about the user from the sensor unit can be transmitted to a mobile terminal (for example, a smartphone), from which the processing device can be controlled using a specially installed application.

In the case of a double bed configuration, each user is provided with their own sensor unit, from which information about the indicators is sent to a processor device capable of receiving and processing two sets of data.

The disadvantage of this technical solution is that during the operation of the proposed sleep monitoring system, the processor device is installed near the bed, in particular on the bedside table, which may be somewhat inconvenient for users, and in the case of a wired connection with the sensor unit, cause discomfort. Also, this technical solution does not reveal its ability to determine the position of a person in a dream using the declared pressure sensors.

Known device (patent CN 110652303) for monitoring the heartbeat, respiration and the state of movement of the human body, consisting of sensor modules, microprocessor unit, communication unit and USB power supply.

Each of the sensor modules includes a piezoelectric ceramic sensor and a signal amplification and filtering unit (preferably, five sensor units in the head region, five sensor units in the thoracic region).

The signals from each piezoelectric ceramic sensor go to the signal amplification and filtering unit in order to complete the amplification and filtering of the original signals of the vital signs of a person, then they go to the microprocessor unit, where the signals are processed and the analysis and processing of data on the amplified and filtered signals is completed, and then the data on the indicators goes to the communication unit.

Information from the communication unit is transmitted to a server or mobile terminal via wired Ethernet or wireless Wi-Fi, Bluetooth, 2G or 4G. A USB power supply supplies power to each unit via a USB adapter.

The disadvantages of this device are that the use of sensors of this type with the proposed variant of their distribution over the mattress can worsen the characteristics and properties of the mattress and cause discomfort to the user, and the device does not allow registering the position of a person in sleep.

Known is a mattress for monitoring the parameters of respiration and heartbeat of a person (US patent 2003045806), which includes a plurality of piezoelectric sensors (from three to nine), made in the form of a piezoelectric polyamide film. In an alternative embodiment of this technical solution, said piezoelectric elements are integrally formed from a single composite sheet of piezoelectric material.

The computing unit, connected to the sensors, receives and processes the output signals to obtain diagnostic variables such as respiratory rate, respiratory phase, heart rate, and human body movements.

This technical solution is aimed primarily at monitoring the parameters of respiration and heartbeat of people suffering from respiratory syndrome, therefore, it does not provide for its use among a wide range of consumers. Also, embedding a plurality of piezoelectric films into a mattress is a rather laborious process, and the use of a plurality of sensitive sensors can lead to complication of signal processing algorithms. In addition, using piezoelectric sensors, it is impossible to obtain information about the position and posture of a person on the mattress.

This technical solution is the closest analogue to the claimed utility model and can act as a prototype.

The task to be solved by this utility model is to create a device for the integrated monitoring of important biophysical parameters of a person during sleep for a wide range of users with the possibility of embedding it into mattresses of various configurations while ensuring high accuracy in determining the parameters of respiration, heart rate, sleep phases and position of a person. in a dream, while not deteriorating the characteristics and properties of the mattress.

The technical result of the proposed utility model is to ensure high accuracy in determining important biophysical parameters of a person during sleep in the absence of a negative impact on the characteristics and properties of the mattress and while ensuring the compactness of the device and reducing the complexity of its integration into mattresses of various configurations.

The technical result is achieved when using a device for recording biophysical parameters of a person during sleep, which includes sensitive sensors connected to the processor unit, characterized in that a piezo-sensitive tape and a tape bending sensor are used as sensors.

These sensors are used to determine four biophysical parameters of a person during sleep, in particular: pulse rate, respiratory rate, sleep stage and position in sleep. It will be apparent to a person skilled in the art that other indicators such as the regularity of falling asleep, weight detection, snoring and any other characteristics known from the prior art can be measured by means of these sensors.

By determining the pulse rate, respiratory rate, sleep stage and position in sleep (and other indicators), sleep characteristics are analyzed, which allows adjusting various areas of life in order to improve the quality of the user's sleep and, as a result, improve the quality of life. To achieve this goal, the system, using the device and built-in sensors, collects primary information about sleep and, on its basis, issues recommendations regarding diet, physical activity and lifestyle in general, etc.

In a preferred embodiment of the device, the transmission of information about the biophysical parameters of the user is carried out to the electronic device wirelessly using a radio modem via BlueTooth, Wi-Fi or other suitable wireless means.

Information about the biophysical parameters of the user can be transmitted to the backend of any electronic device (mobile phone, tablet, neo-laptop, etc.), be integrated into the smart home system, transmitted and stored in the virtual cloud.

The processing unit includes a central processor, modules for analog processing of the output signals of the piezoelectric tape and the tape bend sensor, and the modules for analog processing of the output signals of the piezoelectric tape and the tape bend sensor are connected to the central processor and the input to the analog-to-digital converter.

In another preferred embodiment of the device, a rechargeable battery (ABC) is built into the processing unit.

In another preferred embodiment of the device, the processor unit has a USB port for supplying a 5V supply voltage.

In another preferred embodiment of the device, an accelerometer is built into the processing unit.

Further, the utility model will be described with reference to the drawings:

fig. 1 - Volumetric model of a fragment of a double mattress with an installed device for recording human biophysical parameters during sleep, where 1 is a block of sensitive sensors, 2 is a processing unit;

fig. 2 - Option for placing blocks of sensitive sensors on a double mattress, top view, where 1 - block of sensitive sensors;

fig. 3 - Classification of areas of the human body according to the size of the mattress.

A device for recording biophysical parameters of a person during sleep includes:

- a block of sensitive sensors, including at least one piezo-sensitive tape and at least one tape bending sensor;

- a processor unit, which includes: a central processing unit (CPU), which is a highly integrated microcircuit, analog signal processing modules of the declared sensitive sensors, a storage battery (accumulator battery), an accelerometer, and a radio modem.

The piezo tape, preferably from TE Connectivity, is made of PVDF and is used to determine the three main metrics of the device: heart rate, breathing rate and sleep phase (product name Sleep Monitor Strips).

The principle of operation of a piezo-sensitive tape is that when it is placed on the surface or inside the mattress, in the case when the tape is subjected to dynamic influences (breathing movements, heart beats, body movements) from the user, an electric charge is generated proportional to the intensity of the effects.

The total thickness of the strip is about 50 microns, making it extremely flexible and completely invisible when placed under the body.

Heartbeat and breathing are the most important physiological processes, the parameters of which determine the state of human health. In a healthy person, the pulse and respiration rates should be within a certain range, including during sleep. Continuous monitoring of these indicators allows you to detect potential health problems and make recommendations for adjusting the diet, lifestyle, or warn a person about the need to see a doctor. Such measures make it possible to diagnose in a timely manner serious diseases such as nocturnal orthopnea, snoring, cardiovascular diseases, diseases of the nervous system (panic attacks, restless legs syndrome), sleep disturbances and promptly start treating them. And also, information about the position of a person in a dream can in the early stages identify or prevent diseases of the spine (for example, cervicothoracic osteochondrosis).

The bend sensor is a passive, preferably multi-channel, Flexpoint bend sensor (Bend Sensor) and is designed to obtain information about the user's position during sleep. The proposed bend sensor is a tape - a film based on polyamide, into which sensing elements are embedded, which change their resistance as the radius of the tape bend changes.

There are electrical contacts on one of the edges of the tape for connection to the processor unit.

The position in a dream is understood as a stable horizontal position of the body on the bed over time, which is also called a pose. There are four main positions: on the back, on the left side, on the right side, on the stomach.

In addition to those listed, there are a number of secondary and intermediate poses.

The use of a bend sensor in the product and knowledge of sleep postures has several practical applications:

- when the device is connected for the first time, the bend sensor provides interactive information about which side of the bed the user is on, due to which the mobile application is linked to the device;

- using the bend sensor, it is supposed to determine the number of night climbs, which is the initial information for calculating more general metrics;

- in medical practice, there is an opinion that not every pose is harmless from the point of view of the effect on the spine and internal organs, therefore, knowledge of postures will allow recommending users to take a more correct position in sleep.

The choice of the declared tape sensors for use in the proposed device for determining respiration and heart rate, movements and postures of the user during sleep is due to their advantages over other sensors used for these purposes (for example, piezo disks, MEMS sensors, pressure sensors, point sensors ). The advantages include a large coverage area (it is convenient to stretch the tape sensor through the entire mattress), no discomfort and inconvenience for the user (the tape with sensors is practically not felt), the absence of any negative radiation on the user's body, less labor-intensive and energy-consuming algorithms for processing output signals ...

In addition to the above, the use of tape bending sensors allows the most accurate recording of indicators of the user's movements and postures during sleep.

Considering that tape sensors themselves cannot function without a processor unit, in which signals from sensors are received and processed, we can conclude about the functional and structural unity of these nodes, and a device consisting of tape sensors connected through electrical contacts to the processor block is considered as a single device.

It is also proposed to use an additional sensor - an accelerometer in order to implement energy saving algorithms. The following approach to the implementation of energy saving is assumed: the accelerometer provides the ability not only to measure acceleration along three axes of Cartesian coordinates, but also to implement its own simple logic, for example, tracking the excess of the acceleration threshold along one or several axes. The result of such tracking is the formation of a logic level at a special output of the accelerometer microcircuit. Thus, by setting a certain acceleration threshold, the central processing unit (CPU) can turn off the most power-consuming components of the system, such as the analog signal processing modules of the declared sensitive sensors, and wait for a signal from the accelerometer, which will be triggered the moment the user lies on the mattress.

The proposed device operates as follows.

The block of sensitive sensors for converting user movements into an analog electrical signal consists of a piezo-sensitive tape and a tape bend sensor.

The piezo-sensitive tape reacts to the user's micromovements (breathing movements, heartbeats, body movements) and generates an electrical signal at the output proportional to the intensity of the corresponding influences, and then the electrical signal enters the processing unit, where the processes of matching, filtering and amplifying the signal take place.

The bend sensor, made in the form of a passive multichannel tape sensor with built-in sensing elements, reacts to the pressure exerted by the user on the mattress, and forms resistance at the outputs, and the resistance changes as the bending radius of the tape changes. Then the output signals of the bend sensor are fed to the processor unit for the purpose of switching them.

The accelerometer converts accelerations along three Cartesian axes into a digital code, then the output code goes to the central processing unit (CPU) of the processor unit.

After analog processing of the signals of the declared sensitive sensors, the output signals are sent to the central processing unit (CPU), where their digital processing is carried out using an analog-to-digital converter (ADC).

Then, the digitized signals are transmitted to an electronic device (for example, a smartphone) using a wireless communication module built into the central processing unit (CPU). For example, the wireless module is a 2.4 GHz radio modem that supports Bluetooth Low Energy technology.

Interaction is based on a client-server methodology, where the server is a peripheral device, and the client is a mobile application. The peripheral device implements the so-called services - logically separate information entities, including at least one characteristic, through which data is directly exchanged.

The processing unit includes a central processing unit (CPU), to which the following elements are also associated:

- non-volatile memory, which is a memory device in the form of a digital microcircuit intended for storing system and / or user information;

- low frequency quartz resonator - electronic component - an additional clock source of the central processor required for the real time clock;

- elements that determine the configuration of the mattress: a set of two resistors, the installation of one of which determines the type of mattress (single or double), a set of two resistors, the installation of one of which determines the side of the mattress to which the device is attached at the factory (left or right );

- indicator element controlled by the central processing unit (CPU) and designed to signal various device statuses;

- a mechanical momentary button designed for various user actions (calibration, hard reset, etc.).

The device has the ability to operate both from a storage battery (AKB), which ensures the autonomous operation of the device, and from an external source, and switching the power supply of the device from the battery to an external power source and vice versa (depending on whether the external source is connected) is carried out using a special unit ...

Charging is carried out at the expense of a charger (charger), to the status output of which an indicator element is connected, which displays the charge status.

Low voltage supply (5 V) for charging the built-in battery is provided via the USB port.

The node in the form of a voltage divider, the output of which is connected to the central processing unit (CPU), is designed to detect the presence of an external power supply.

Next, the process of processing the electrical signal of the piezoelectric tape is considered.

At the hardware level, an analog signal goes through three stages of processing:

- matching - converting the charge generated by the sensor into electrical voltage;

- anti-aliasing filtering to eliminate the aliasing effect;

- amplification in order to increase the dynamic range of the signal.

The signal from the piezo-sensitive tape is fed to the preprocessing unit of the processor unit with zero gain.

From the output of the preprocessing unit, the signal enters the filtering unit.

The filtering unit is built on the basis of an active second-order filter according to the Sallen-Key scheme and is designed to suppress components with frequencies above 15 Hz in the output signal spectrum, which can significantly reduce the effect on the signal from line noise and eliminate the aliasing effect. Since the filter has zero gain, it does not require a voltage reference.

After filtering, the signal enters the amplification unit designed to expand the dynamic range of the useful signal. The block is built on the basis of a non-inverting amplifier circuit based on an operational amplifier. Since the signal arrives at the input of the block with an offset, the feedback loop is connected to the reference voltage.

After amplification, the signal is fed to the input of an analog-to-digital converter (ADC) built into the central processing unit (CPU). Further processing of the signal is performed using digital methods.

The following describes the processing of the electrical signal of the bend sensor.

The bend sensor is connected to a pre-processing unit that converts the segment resistance to voltage. The circuitry unit is implemented on the basis of a voltage divider, the number of which is determined by the number of sensor channels.

From the preprocessing unit, the signals go to the channel switching unit, which is an analog multiplexer that switches the signal from several inputs to one output in accordance with the state of the address inputs, which is set by the central processing unit (CPU).

From the output of the switching unit, the signal enters the matching unit, which is implemented according to the voltage follower circuit on the operational amplifier. The signal then goes to an analog-to-digital converter (ADC) built into the central processing unit (CPU).

After analog processing, the signals of the sensitive sensors used undergo digital processing using an ADC built into the central processing unit (CPU).

To calculate the indicators of pulse and respiration, the signals go through several stages:

- digital IIR filter (filter with infinite impulse response) of low frequencies to suppress the pulse signal and extract the breath signal;

- calculation of the respiration spectrum by the fast Fourier transform (FFT) method in a window of 4096 points and the calculation of its frequency from the maximum of the spectral component;

- digital IIR high-pass filter to suppress the breath signal;

- decomposition into experimental modes (by the EEMD method), as a result of which the signal is decomposed into several components (modes). Thus, it is possible to get rid of noise and quite effectively implement the selection of the pulse signal against the background of the respiration signal remaining after the first stage;

- calculation of the spectrum of the pulse signal by the FFT method in a window of 4096 points and the calculation of the heart rate.

The methods of analog processing described above make it possible to obtain stably correct calculated values of the pulse and respiration rates only under certain conditions:

- lack of network interference;

- lack of influence of the breathing process, essential movements and position in sleep;

- lack of influence of the mattress;

- lack of sharp micromovements.

Practice has shown a high degree of non-stationarity of the signal, that is, the inconsistency of the signal shape both in amplitude and in time due to the factors listed above. Considering the above, the system uses several additional steps to digitally process the arrays of heart rate and respiration rates before the user sees the numerical values in the mobile application:

Discarding invalid values in retrospective of 10 dimensions. The rejection criterion is going beyond the threshold equal to the average value in the specified window of 10 points. If the change in the current value in absolute value exceeds the threshold by 3 units, then the value is replaced by the average.

Multistage averaging of the obtained curve using a sliding window consisting of three points: the current point, one previous and one subsequent value is taken. If the change in the current value in absolute value exceeds the average by 0.1 units in the window of the third point, then it is replaced by the average.

The first step is implemented in the processor unit of the proposed device, and the second step is implemented on the side of the mobile application.

Thus, the user has the opportunity to receive information about the pulse rate and respiratory rate during sleep, and the device performs the function of notifying the user about critical values of these indicators, for example, heart rate.

The algorithm for determining the phases of sleep is based on data from a piezoelectric tape and assumes counting movements per unit of time. If the signal of the piezoelectric tape exceeds a certain threshold, which occurs only during movements, then the movement is recorded. The intensity of movement is the higher, the longer the signal of the piezoelectric tape is below the threshold value.

Information about the user's posture during sleep is obtained based on the signal from the flexure sensor. The process is as follows.

After digitization, the signal from the ADC readings is converted into resistance in accordance with the voltage divider formula. During an active sleep session, all sensor channels are periodically polled and the measured values are stored in non-volatile memory, after which the data is transferred to the mobile application for further processing.

The preferred options for using the proposed device are as follows.

The device has the ability to integrate it into mattresses of various configurations, in particular single, double, children's, and various options for the placement of the declared sensitive sensors are possible and their variation in quantity (coordination with mattress manufacturers) and modifications (coordination with manufacturers of sensitive sensors ).

To achieve the technical result, tape sensors in the form of thin films are used.

An embodiment of the integration of the proposed device into a double mattress is shown in FIG. 2, which shows that the blocks of sensitive sensors (1) are made as independent blocks for each berth.

In this version, there can be two processor units for each sensor unit, or it can be made in one housing with two sensor units connected.

In a preferred embodiment of the proposed device, the sensors are placed in a technical cover and placed on a mattress. Alternatively, the device is built into the mattress during production. Moreover, the piezo-sensitive tape and the tape bend sensor can be glued together using an adhesive layer.

The declared sensitive sensors in the form of tapes are connected to the processor unit, which consists of a plastic case, which houses the printed circuit board, battery, radio modem, and located on the side of the mattress.

Further, the options for the placement of the declared sensitive sensors are considered.

In a preferred embodiment, for correct determination of the pulse rate, the piezoelectric tape can be located in three upper zones: the head, chest and lower back zones (Fig. 3). The most distinct signal is expressed in the region of the head and chest zones.

The piezoelectric tape can be located on the surface of the mattress, inside or under it. In this case, if the sensor is located under the mattress, it is necessary to provide (select) such parameters of the analog signal processing module of the sensor, which will ensure the required signal level at the input of the central processing unit (CPU).

In a preferred embodiment, the flexure sensor is placed on the mattress in the chest area of the user.

Variants with bending of the sensor are allowed, but not recommended by the manufacturer, as this can lead to mechanical damage to the sensor.

Possible sensor locations:

- transverse arrangement - when the tape sensor is located across the entire mattress or one berth (for a double mattress);

- diagonal arrangement - when the tape sensor is located at an angle to the vertical axis of the berth;

- longitudinal location - when the tape sensor is located along (in the middle) of the berth.

The most preferred option is the transverse arrangement of the sensors, when both sensors are located across the mattress in the chest area, and the processing unit is installed on the side of the mattress (Fig. 1).

When implementing the proposed device, it is possible to monitor a wide range of vital biophysical indicators of the user, high accuracy of their determination without negatively affecting the characteristics and properties of the mattress, reducing the labor intensity of embedding into mattresses of various categories and the possibility of distributing the device among a wide range of consumers.

Claims (6)

1. A device for recording biophysical parameters of a person during sleep, which includes sensitive sensors connected to the processing unit, characterized in that a piezo-sensitive tape and a multichannel tape bending sensor are used as sensors. 2. The device according to claim 1, characterized in that the processing unit includes a central processor, modules for analog processing of the output signals of the piezoelectric sensor and the bend sensor, and the modules for analog processing of the output signals of the piezoelectric sensor and the bend sensor are connected to the central processor and the analog-digital input converter. 3. A device according to claim 1, characterized in that it contains a communication module with a mobile device, which is made in the form of a radio modem. 4. The device according to claim 1, characterized in that a rechargeable battery is built into the processor unit. 5. The device according to claim 1, characterized in that the processor unit has a USB port for supplying a 5 V supply voltage. 6. The device according to claim 1, characterized in that an accelerometer is built into the processor unit.

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