Sleep monitor and sleep monitoring method based on piezoelectricity and weighing sensor

Abstract

The invention provides a sleep monitor based on piezoelectricity and weighing sensors and a sleep monitoring method. The sleep monitor comprises a main controller, a piezoelectric sensor and weighing sensor array, an analog-to-digital conversion circuit, a wireless communication module and a power supply module, the piezoelectric sensor and weighing sensor array is connected with the main controller through the analog-to-digital conversion circuit, the main controller is connected with the wireless communication module, and the main controller, the piezoelectric sensor and weighing sensor array, the analog-to-digital conversion circuit and the wireless communication module are connected with the power supply module. According to the invention, the piezoelectric sensor and the weighing sensor array are used for collecting the vital sign data of the user in sleep and the off-bed signal, so that the accurate vital sign data of the user in bed and in deep sleep are obtained, only the vital sign data and the off-bed signal need to be subjected to data analysis, more complex interference on the human body is not generated, and the user experience is improved. Therefore, accurate evaluation of the sleep quality of the user can be realized, and the user can be timely notified to perform adjustment if a sleep problem occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of sleep monitoring, and in particular to a sleep monitoring instrument and a sleep monitoring method based on a piezoelectric and weighing sensor. Background Art

[0002] Sleep monitoring is an important means to evaluate sleep quality and diagnose sleep disorders. Usually, sleep monitoring provides important life information about sleep health by collecting and analyzing various signals from the user's body, including brain waves, electrocardiograms, muscle activity, eye movements, breathing movements, and blood oxygen levels.

[0003] The quality of sleep includes two factors: sleep time and sleep depth. The data collection process involves strong contact with the human body, which is not conducive to falling asleep or sleeping deeply, because people are usually unconscious when sleeping. Existing technology cannot accurately obtain people's vital signs data in bed and when they are sleeping soundly. Therefore, there is an urgent need for a sleep monitoring solution that can accurately obtain people's vital signs data in bed and when they are sleeping soundly. Summary of the invention

[0004] In order to achieve the above-mentioned purpose and other advantages of the present invention, the first purpose of the present invention is to provide a sleep monitor based on piezoelectric and weighing sensors, including a main controller, a piezoelectric sensor and a weighing sensor array, an analog-to-digital conversion circuit, a wireless communication module, and a power module;

[0005] The piezoelectric sensor and the weighing sensor array are connected to the main controller through the analog-to-digital conversion circuit, the main controller is connected to the wireless communication module, and the main controller, the piezoelectric sensor and the weighing sensor array, the analog-to-digital conversion circuit, the wireless communication module and the power module are connected;

[0006] The power supply module is used to provide working power for the main controller, the analog-to-digital conversion circuit, the wireless communication module, the piezoelectric sensor and the weighing sensor array;

[0007] The piezoelectric sensor and weighing sensor array are used to collect vital sign data of the user during sleep and bed leaving signal;

[0008] The analog-to-digital conversion circuit is used to convert the data collected by the piezoelectric sensor and the weighing sensor array into digital signals;

[0009] The main controller is used to process the data converted by the analog-to-digital conversion circuit to achieve sleep monitoring;

[0010] The wireless communication module is used to wirelessly transmit the monitoring result of the main controller.

[0011] Furthermore, the piezoelectric sensor and weighing sensor array includes a plurality of piezoelectric ceramic sensors and a plurality of weighing sensors.

[0012] Further, the analog-to-digital conversion circuit includes a piezoelectric analog-to-digital conversion circuit and a weighing analog-to-digital conversion circuit;

[0013] The piezoelectric analog-to-digital conversion circuit includes a first connector and a first analog-to-digital conversion chip, the piezoelectric ceramic sensor is electrically connected to the first connector, the first connector is electrically connected to the first analog-to-digital conversion chip, the first analog-to-digital conversion chip is electrically connected to the main controller, and the first connector and the first analog-to-digital conversion chip are electrically connected to the power module;

[0014] The weighing analog-to-digital conversion circuit includes a second connector and a second analog-to-digital conversion chip. The weighing sensor is electrically connected to the second connector, the second connector is electrically connected to the second analog-to-digital conversion chip, the second analog-to-digital conversion chip is electrically connected to the main controller, and the second connector and the second analog-to-digital conversion chip are electrically connected to the power module.

[0015] Furthermore, the wireless communication module includes a first switch, a wireless module, a second switch, and an LED light; the first switch, the wireless module, the second switch, and the LED light are electrically connected to the power module; the first switch, the second switch, and the LED light are electrically connected to the wireless module; and the wireless module is electrically connected to the main controller.

[0016] Furthermore, the power supply module includes a TYPE-C interface, a voltage stabilization circuit, a linear voltage regulator, and a step-down chip. The TYPE-C interface is electrically connected to the main controller, and the TYPE-C interface is electrically connected to the linear voltage regulator and the step-down chip via the voltage stabilization circuit. The linear voltage regulator is electrically connected to the first connector, the first analog-to-digital conversion chip, the second connector, and the second analog-to-digital conversion chip. The step-down chip is electrically connected to the first switch, the wireless module, the second switch, and the LED lamp.

[0017] Furthermore, the voltage stabilizing circuit includes a voltage stabilizing diode, a transistor, a MOS transistor, and a TVS diode. The positive electrode of the voltage stabilizing diode is grounded, the negative electrode of the voltage stabilizing diode is connected to the base of the transistor, the collector of the transistor, the negative electrode of the voltage stabilizing diode, and the source of the MOS transistor are connected to the TYPE-C interface, the emitter of the transistor is connected to the gate of the MOS transistor, the drain of the MOS transistor is connected to the negative electrode of the TVS diode and the linear regulator, and the positive electrode of the TVS diode is grounded.

[0018] Furthermore, the number of the piezoelectric ceramic sensors is 2, and the number of the weighing sensors is 4.

[0019] Furthermore, the first analog-to-digital conversion chip and the second analog-to-digital conversion chip are both CS1237-SO chips.

[0020] Furthermore, the wireless module adopts a universal Wi-Fi+BT+BLE MCU module.

[0021] A second object of the present invention is to provide a sleep monitoring method, based on the above-mentioned sleep monitoring device, comprising the following steps:

[0022] Obtain vital sign data and bed exit signals;

[0023] Screening the vital sign data according to the bedside signal;

[0024] Calculate cardiac cycle intervals using the screened vital sign data;

[0025] Calculating the heart rate variability through the cardiac cycle intervals and making a heart rate scatter plot;

[0026] Obtaining health feedback information according to the heart rate variability;

[0027] Sinus rhythm, supraventricular and ventricular arrhythmias are determined based on the heart rate scattergram.

[0028] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0029] The present invention provides a sleep monitor and a sleep monitoring method based on piezoelectric and weighing sensors. The piezoelectric sensor and weighing sensor arrays are used to collect the vital sign data of the user while sleeping and the bed leaving signal, so as to obtain accurate vital sign data of the user while in bed and in deep sleep. Sleep monitoring only requires data analysis of the vital sign data and the bed leaving signal, without causing more complex interference to the human body, and an accurate assessment of the user's sleep quality can be achieved. If sleep problems occur, the user can be notified in time to make adjustments.

[0030] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 Schematic diagram of a sleep monitor based on piezoelectric and load cell;

[0033] Figure 2 It is the circuit diagram of analog-to-digital conversion;

[0034] Figure 3 is a circuit diagram of a wireless communication module;

[0035] Figure 4 This is the circuit diagram of the power module;

[0036] Figure 5 It is a schematic diagram of BCG;

[0037] Figure 6 This is a schematic diagram of the JJ interval of BCG;

[0038] Figure 7 is a scatter plot of heart rate;

[0039] Figure 8 This is a schematic diagram of the heart rate judgment result;

[0040] Fig. 9 The sleep monitoring method flow chart is shown in FIG.

[0041] Fig.10 It is a schematic diagram of computer equipment;

[0042] Fig.11 A schematic diagram of a computer-readable storage medium. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0044] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0045] The figure numbers in this application are only used to distinguish the various steps in the scheme, and are not used to limit the execution order of the various steps. The specific execution order is subject to the description in the specification.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] Example 1

[0048] A sleep monitor 100 based on piezoelectric and weighing sensors, such as Figure 1-Figure 4 As shown, it includes a main controller 110, a piezoelectric sensor and a weighing sensor array 120, an analog-to-digital conversion circuit 130, a wireless communication module 140, and a power module 150;

[0049] The piezoelectric sensor and the weighing sensor array are connected to the main controller through the analog-to-digital conversion circuit, the main controller is connected to the wireless communication module, and the main controller, the piezoelectric sensor and the weighing sensor array, the analog-to-digital conversion circuit, the wireless communication module and the power module are connected;

[0050] The power supply module is used to provide working power for the main controller, the analog-to-digital conversion circuit, the wireless communication module, the piezoelectric sensor and the weighing sensor array;

[0051] The piezoelectric sensor and weighing sensor array are used to collect vital sign data of the user during sleep and bed leaving signal;

[0052] The analog-to-digital conversion circuit is used to convert the data collected by the piezoelectric sensor and the weighing sensor array into digital signals;

[0053] The main controller is used to process the data converted by the analog-to-digital conversion circuit to achieve sleep monitoring;

[0054] The wireless communication module is used to wirelessly transmit the monitoring result of the main controller.

[0055] When the heart beats and pumps blood into the large blood vessels, it causes slight body movements. This repetitive slight movement can be captured by a highly sensitive pressure sensor, which records the corresponding periodic movement in a graph called a ballistocardiogram (BCG). Figure 5-Figure 6 shown.

[0056] The above-mentioned sleep monitor 100 based on piezoelectric and weighing sensors is installed in a mattress. The user's bed-in and bed-out signals are collected by the weighing sensor, and the weak body movement caused by the heartbeat is sensed by the high-sensitivity piezoelectric sensor placed in the mattress, which triggers its piezoelectric effect and converts the vibration signal into a pseudo-voltage signal. The bed-in and bed-out signals collected by the weighing sensor and the vital signs data collected by the piezoelectric sensor are digitized through the hardware system and transmitted to the host for subsequent signal processing, analysis and calculation, thereby obtaining a series of human heart function data indicators.

[0057] In some embodiments, the piezoelectric sensor and weighing sensor array includes a plurality of piezoelectric ceramic sensors and a plurality of weighing sensors.

[0058] In some embodiments, Figure 2As shown, the analog-to-digital conversion circuit includes a piezoelectric analog-to-digital conversion circuit and a weighing analog-to-digital conversion circuit;

[0059] The piezoelectric analog-to-digital conversion circuit includes a first connector P1 and a first analog-to-digital conversion chip U2, the piezoelectric ceramic sensor is electrically connected to the first connector, the first connector is electrically connected to the first analog-to-digital conversion chip, the first analog-to-digital conversion chip is electrically connected to the main controller, and the first connector and the first analog-to-digital conversion chip are electrically connected to the power module;

[0060] Taking the number of the piezoelectric ceramic sensors as 2 as an example, the first analog-to-digital conversion chip adopts a CS1237-SO chip. Two piezoelectric ceramic sensors are connected to the first connector P1. P1 adopts an MX1.25mm-2P connector. Pin 1 of P1 is connected to VREF via resistor R29, and is connected to the AI ​​NN pin of the first analog-to-digital conversion chip U2 via resistors R31 and R32. VREF is connected to the REF IN pin and GND pin of U2 via capacitors C26, C25 and C19 connected in parallel. Pin 2 of P1 is connected to VREF via resistor R33, and is connected to the AI ​​NP pin of the first analog-to-digital conversion chip U2 via resistors R34 and R35. One end of capacitor C23 is connected between resistor R31 and resistor R32, and the other end is connected between resistor R34 and resistor R35. One end of capacitor C24 is connected between resistor R32 and the AIIN pin of U2, and the other end is connected between resistor R35 and the AI ​​NP pin of U2. The AI ​​NN pin of U2 is grounded via capacitor C20. The NP pin is grounded via capacitor C27, J3 is connected to pins 1 and 2 of P1, the REFOUT pin of U2 is floating, the VDD pin of U2 is connected to VC2 and to ground via capacitor C22, the DOUT pin of U2 is connected to the IO26 pin of the main controller via resistor R36, and the SCLK pin of U2 is connected to the IO27 pin of the main controller via resistor R37.

[0061] The weighing analog-to-digital conversion circuit includes a second connector and a second analog-to-digital conversion chip U3. The weighing sensor is electrically connected to the second connector, the second connector is electrically connected to the second analog-to-digital conversion chip, the second analog-to-digital conversion chip is electrically connected to the main controller, and the second connector and the second analog-to-digital conversion chip are electrically connected to the power module.

[0062] Taking the number of the weighing sensors as 4 as an example, the second analog-to-digital conversion chip adopts CS1237-SO chip. The four weighing sensors form differential inputs, that is, J1 / S3, J2 / S2, J5 / S1, and J4 / S4 in the figure form differential inputs. After J1 is connected to S3, it is connected to J2, S2, and J4, S4. After J5 is connected to S1, it is connected to J2, S2, and J4, S4. After J2 is connected to S2, it is connected to the AI ​​NN pin of the second analog-to-digital conversion chip U3 via resistor R41. After J4 is connected to S4, it is connected to the AI ​​NP pin of the second analog-to-digital conversion chip U3 via resistor R42. The REF IN pin of U3 is connected to VC4 and grounded via capacitor C28. The GND pin of U3 is grounded. Capacitor C32 is connected between the AI ​​NN pin and the AI ​​NP pin of U3. The AI ​​NP pin of U3 is grounded via capacitor C29. The NP pin is grounded via capacitor C33, the REFOUT pin of U3 is floating, the VDD pin of U3 is connected to VC3 and to ground via capacitor C31, the DOUT pin of U3 is connected to the IO22 pin of the main controller via resistor R43, and the SCLK pin of U3 is connected to the IO23 pin of the main controller via resistor R44.

[0063] In some embodiments, Figure 3As shown, the wireless communication module includes a first switch SW1, a wireless module U1, a second switch SW2, LED lights D2 and D3. Preferably, the wireless module adopts a universal Wi-Fi+BT+BLE MCU module. The first switch, wireless module, second switch, and LED light are electrically connected to the power module, the first switch, the second switch, and the LED light are electrically connected to the wireless module, and the wireless module is electrically connected to the main controller. The first switch SW1 is connected to 3.3V via resistor R19, the first switch SW1 is connected to the EN pin of U1 in parallel with capacitor C9, the second switch SW2 is connected to 3.3V via resistor R21, the second switch SW2 is connected to the IO5 pin of U1 in parallel with capacitor C11, the 3V3 pin of U1 is connected to 3.3V and grounded via capacitor C8, the GND pin of U1 is grounded, the NC pin is suspended, the TXD0 pin is connected to the TXD pin of the main controller, the RXD0 pin is connected to the RXD pin of the main controller, the IO0 pin is connected to the IO0 pin of the main controller, IO16, IO17, The IO22, IO23, IO25, IO26, and IO27 pins are connected to the IO16, IO17, IO22, IO23, IO25, IO26, and IO27 pins of the main controller, the IO18, IO19, and IO21 pins are connected to the cathode of the three LED lamps of D2 and the cathode of the three LED lamps of D2 via resistors R22, R23, and R24 respectively, the anode of the three LED lamps of D2 and the anode of the three LED lamps of D3 are connected to 3.3V, the IO35 pin of U1 is connected to 3.3V via resistor R45, and is grounded via C34 in parallel with the NTC.

[0064] In some embodiments, Figure 4 As shown, the power module includes a TYPE-C interface USB1, a voltage stabilizing circuit, a linear voltage regulator Q6, and a buck chip Q2. The TYPE-C interface is electrically connected to the main controller, and the TYPE-C interface is electrically connected to the linear voltage regulator and the buck chip via the voltage stabilizing circuit. The linear voltage regulator is electrically connected to the first connector, the first analog-to-digital conversion chip, the second connector, and the second analog-to-digital conversion chip. The buck chip is electrically connected to the first switch, the wireless module, the second switch, and the LED lamp.

[0065] Furthermore, the voltage stabilizing circuit includes a voltage stabilizing diode Q5, a transistor Q3, a MOS transistor Q4, and a TVS diode Q1. The positive electrode of the voltage stabilizing diode is grounded, the negative electrode of the voltage stabilizing diode is connected to the base of the transistor, the collector of the transistor, the negative electrode of the voltage stabilizing diode, and the source of the MOS transistor are connected to the TYPE-C interface, the emitter of the transistor is connected to the gate of the MOS transistor, the drain of the MOS transistor is connected to the negative electrode of the TVS diode and the linear regulator, and the positive electrode of the TVS diode is grounded.

[0066] Pins 1 and 12 of USB1 are grounded, pins 3, 4, and 10 are floating, pins 2 and 11 are connected to the collector of Q3 through resistor R1 and to ground through J7, the base of Q3 is connected to the negative electrode of Q5 through resistor R7, the positive electrode of Q5 is grounded, the negative electrode of Q5 is connected to the collector of Q3 through resistor R3, the collector of Q3 is connected to its emitter through resistor R4, the collector of Q3 is connected to the source of Q4, the emitter of Q3 and the gate of Q4 are grounded through resistor R9, the drain of Q4 is connected to VC1, VC1 is connected to the negative electrode of Q1, the positive electrode of Q1 is grounded, capacitors C35, C36, and C12 are connected in parallel with Q1, one end of C12 is connected to the VI N pin of Q6 through inductor L2, and the other end is connected to the GND pin of Q6 through inductor L3, and capacitors C14 and C13 are connected in parallel to the VI N pin and GND pin, EN pin of Q6 is connected to IO25 pin of main controller via resistor R28, resistor R27 is connected between EN pin and GND pin of Q6, BP pin of Q6 is left floating, VOUT pin is connected to VC3 via resistor R40, connected to VC2 via resistor R30, connected to VREF via resistors R25 and R26 through one end of capacitors C15 and C16 in parallel, the cathode of Zener diode Q7 is connected between resistors R25 and R26, the anode of Zener diode Q7 is grounded, the regulating end of Zener diode Q7 is connected to its cathode, the other ends of capacitors C15 and C16 are grounded, VC3 is grounded via capacitor C30, VC2 is grounded via capacitor C21, VC3 is connected to VC4 via resistor R39, VC3 is connected to VREF via resistors R39 and R38, one end of C17 and C18 in parallel is connected between VREF and R26, and the other ends of C17 and C18 in parallel are grounded.

[0067] The sleep monitoring method of the sleep monitoring device based on the piezoelectric sensor is as follows: Fig. 9 As shown, the method comprises the following steps:

[0068] S1, obtaining vital sign data and bed leaving signal; that is, the vital sign data and bed leaving signal collected by the piezoelectric sensor and the weighing sensor array 120, wherein a ballistocardiogram (BCG) is generated according to the vital sign data, such as Figure 5-Figure 6 shown.

[0069] S2. screening the vital sign data according to the bedside signal;

[0070] When the user leaves the bed, the collected vital signs data is 0; only when the user is in bed can valid vital signs be collected.

[0071] S3, calculating the cardiac cycle interval by using the screened vital sign data; Figure 6 As shown, for BCG, the JJ interval is calculated.

[0072] S4, calculating the heart rate variability through the cardiac cycle interval, and making a heart rate scatter plot;

[0073] Heart rate variability is calculated by recording the JJ interval series to obtain HRV.

[0074] like Figure 7 As shown, by collecting the JJ interval data in the BCG and drawing a graph, a heart rate scatter plot is obtained, which can be used to macroscopically judge the sinus rate, supraventricular and ventricular arrhythmias.

[0075] S5. Obtaining health feedback information according to the heart rate variability;

[0076] HRV can be used for stress recovery. By analyzing the difference between each heartbeat, timely health feedback information can be obtained. The larger the HRV value, the better the recovery and rest, and the healthier.

[0077] S6. Determine sinus rate, supraventricular and ventricular arrhythmias according to the heart rate scatter plot.

[0078] like Figure 8 As shown, the heart rate scatter plot can be used to determine normal sinus rate, sinus rhythm combined with supraventricular premature beats, and persistent atrial fibrillation.

[0079] The present embodiment provides a sleep monitor based on piezoelectric and weighing sensors, which collects the vital signs data of the user while sleeping and the bed leaving signal through the piezoelectric sensor and weighing sensor array, so as to obtain the accurate vital signs data of the user while in bed and in deep sleep. It only needs to perform data analysis on the vital signs data and the bed leaving signal to realize sleep monitoring, without causing more complex interference to the human body, and can realize accurate assessment of the user's sleep quality. If sleep problems occur, the user can be notified in time to make adjustments.

[0080] Example 2

[0081] A sleep monitoring method is provided, based on the above-mentioned sleep monitor. For a detailed description of the sleep monitor, reference can be made to the corresponding description in the above-mentioned sleep monitor embodiment, which will not be repeated here. Fig. 9 As shown, the method comprises the following steps:

[0082] S1, obtaining vital sign data and bed leaving signal; that is, the vital sign data and bed leaving signal collected by the piezoelectric sensor and the weighing sensor array 120, wherein a ballistocardiogram (BCG) is generated according to the vital sign data, such as Figure 5-Figure 6 shown.

[0083] S2. screening the vital sign data according to the bedside signal;

[0084] When the user leaves the bed, the collected vital signs data is 0; only when the user is in bed can valid vital signs be collected.

[0085] S3, calculating the cardiac cycle interval by using the screened vital sign data; Figure 6 As shown, for BCG, the JJ interval is calculated.

[0086] S4, calculating the heart rate variability through the cardiac cycle interval, and making a heart rate scatter plot;

[0087] Heart rate variability is calculated by recording the JJ interval series to obtain HRV.

[0088] like Figure 7 As shown, by collecting the JJ interval data in the BCG and drawing a graph, a heart rate scatter plot is obtained, which can be used to macroscopically judge the sinus rate, supraventricular and ventricular arrhythmias.

[0089] S5. Obtaining health feedback information according to the heart rate variability;

[0090] HRV can be used for stress recovery. By analyzing the difference between each heartbeat, timely health feedback information can be obtained. The larger the HRV value, the better the recovery and rest, and the healthier.

[0091] S6. Determine sinus rate, supraventricular and ventricular arrhythmias according to the heart rate scatter plot.

[0092] like Figure 8 As shown, the heart rate scatter plot can be used to determine normal sinus rate, sinus rhythm combined with supraventricular premature beats, and persistent atrial fibrillation.

[0093] The present embodiment provides a sleep monitoring method, which is based on the sleep monitor provided in Embodiment 1. It collects the vital sign data of the user while sleeping and the bed leaving signal through a piezoelectric sensor and a weighing sensor array, so as to obtain accurate vital sign data of the user while in bed and in deep sleep. It only needs to perform data analysis on the vital sign data and the bed leaving signal to realize sleep monitoring, without causing more complex interference to the human body, and can realize accurate assessment of the user's sleep quality. If sleep problems occur, the user can be notified in time to make adjustments.

[0094] Example 3

[0095] A computer device 200, such as Fig.10 As shown, it includes a memory 210, a processor 220, and a computer program 230 stored in the memory and executable on the processor. When the processor executes the computer program, the steps of a sleep monitoring method are implemented. For a detailed description of the method, reference can be made to the corresponding description in the above method embodiment, which will not be repeated here.

[0096] Example 4

[0097] A computer readable storage medium such as Fig.11 As shown, a computer program is stored thereon, and when the computer program is executed by the processor, the steps of a sleep monitoring method are implemented. For a detailed description of the method, reference may be made to the corresponding description in the above method embodiment, and no further description is given here.

[0098] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0099] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

[0100] The apparatus, computer device, non-volatile computer storage medium and method provided in the embodiments of this specification correspond to each other, and therefore, the apparatus, computer device and non-volatile computer storage medium also have similar beneficial technical effects as the corresponding method. Since the beneficial technical effects of the method have been described in detail above, the beneficial technical effects of the corresponding apparatus, computer device and non-volatile computer storage medium will not be repeated here.

[0101] Those skilled in the art also know that, in addition to implementing the controller in a purely computer-readable program code, the controller can be made to implement the same function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, such a controller can be considered as a hardware component, and the devices for implementing various functions included therein can also be considered as structures within the hardware component. Or even, the devices for implementing various functions can be considered as both software units for implementing the method and structures within the hardware component.

[0102] The systems, devices or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. For the convenience of description, the above devices are described separately by functions in various units. Of course, when implementing one or more embodiments of this specification, the functions of each unit can be implemented in the same or more software and / or hardware.

[0103] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, systems, or computer program products. Therefore, the embodiments of this specification may be in the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the embodiments of this specification may be in the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0104] This specification is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of this specification. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0105] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0106] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0107] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0108] The specification may be described in the general context of computer-executable instructions executed by a computer, such as program units. Generally, program units include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communications network. In a distributed computing environment, program units may be located in local and remote computer storage media, including storage devices.

[0109] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0110] The above description is only an embodiment of this specification and is not intended to limit one or more embodiments of this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of one or more embodiments of this specification.

Claims

1. A sleep monitor based on piezoelectric and weighing sensors, characterized in that: It includes a main controller, a piezoelectric sensor and a weighing sensor array, an analog-to-digital conversion circuit, a wireless communication module, and a power module; The piezoelectric sensor and the weighing sensor array are connected to the main controller through the analog-to-digital conversion circuit, the main controller is connected to the wireless communication module, and the main controller, the piezoelectric sensor and the weighing sensor array, the analog-to-digital conversion circuit, the wireless communication module and the power module are connected; The power supply module is used to provide working power for the main controller, the analog-to-digital conversion circuit, the wireless communication module, the piezoelectric sensor and the weighing sensor array; The piezoelectric sensor and weighing sensor array are used to collect vital sign data of the user during sleep and bed leaving signal; The analog-to-digital conversion circuit is used to convert the data collected by the piezoelectric sensor and the weighing sensor array into digital signals; The main controller is used to process the data converted by the analog-to-digital conversion circuit to achieve sleep monitoring; The wireless communication module is used to wirelessly transmit the monitoring result of the main controller.

2. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 1, characterized in that: The piezoelectric sensor and weighing sensor array includes a plurality of piezoelectric ceramic sensors and a plurality of weighing sensors.

3. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 2, characterized in that: The analog-to-digital conversion circuit includes a piezoelectric analog-to-digital conversion circuit and a weighing analog-to-digital conversion circuit; The piezoelectric analog-to-digital conversion circuit includes a first connector and a first analog-to-digital conversion chip, the piezoelectric ceramic sensor is electrically connected to the first connector, the first connector is electrically connected to the first analog-to-digital conversion chip, the first analog-to-digital conversion chip is electrically connected to the main controller, and the first connector and the first analog-to-digital conversion chip are electrically connected to the power module; The weighing analog-to-digital conversion circuit includes a second connector and a second analog-to-digital conversion chip. The weighing sensor is electrically connected to the second connector, the second connector is electrically connected to the second analog-to-digital conversion chip, the second analog-to-digital conversion chip is electrically connected to the main controller, and the second connector and the second analog-to-digital conversion chip are electrically connected to the power module.

4. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 3, characterized in that: The wireless communication module includes a first switch, a wireless module, a second switch, and an LED lamp. The first switch, the wireless module, the second switch, and the LED lamp are electrically connected to the power module. The first switch, the second switch, and the LED lamp are electrically connected to the wireless module. The wireless module is electrically connected to the main controller.

5. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 4, characterized in that: The power module includes a TYPE-C interface, a voltage stabilization circuit, a linear voltage regulator, and a step-down chip. The TYPE-C interface is electrically connected to the main controller. The TYPE-C interface is electrically connected to the linear voltage regulator and the step-down chip via the voltage stabilization circuit. The linear voltage regulator is electrically connected to the first connector, the first analog-to-digital conversion chip, the second connector, and the second analog-to-digital conversion chip. The step-down chip is electrically connected to the first switch, the wireless module, the second switch, and the LED lamp.

6. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 5, characterized in that: The voltage stabilizing circuit includes a voltage stabilizing diode, a transistor, a MOS transistor, and a TVS diode. The positive electrode of the voltage stabilizing diode is grounded, the negative electrode of the voltage stabilizing diode is connected to the base of the transistor, the collector of the transistor, the negative electrode of the voltage stabilizing diode, and the source of the MOS transistor are connected to the TYPE-C interface, the emitter of the transistor is connected to the gate of the MOS transistor, the drain of the MOS transistor is connected to the negative electrode of the TVS diode and the linear regulator, and the positive electrode of the TVS diode is grounded.

7. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 2, characterized in that: The number of the piezoelectric ceramic sensors is 2, and the number of the weighing sensors is 4.

8. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 3, characterized in that: The first analog-to-digital conversion chip and the second analog-to-digital conversion chip both use CS1237-SO chips.

9. A sleep monitor based on piezoelectric and weighing sensors as claimed in claim 4, characterized in that: The wireless module adopts a universal Wi-Fi+BT+BLE MCU module.

10. A sleep monitoring method, based on the sleep monitoring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Obtain vital sign data and bed exit signals; Screening the vital sign data according to the bedside signal; Calculate cardiac cycle intervals using the screened vital sign data; Calculating the heart rate variability through the cardiac cycle intervals and making a heart rate scatter plot; Obtaining health feedback information according to the heart rate variability; Sinus rhythm, supraventricular and ventricular arrhythmias are determined based on the heart rate scattergram.

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