A heart rate monitoring and motivation device

Abstract

The application provides a heart rate monitoring and incentive device, which comprises a ring-shaped packaging shell, the inside of the ring-shaped packaging shell comprises, from top to bottom, a polarized piezoelectric film, a magnetoelastic film, an electromagnetic coil, a charge collection module, a Bluetooth module and a power module in sequence, the polarized piezoelectric film is connected with an electrode, the electrode is electrically connected with the charge collection module, the electromagnetic coil is electrically connected with the power module, the diameter of the polarized piezoelectric film is 17-19 mm, and the thickness is 2-4 mu m. The device can accurately detect the heart rate change of the human body, timely remind when the heart rate is abnormal, avoid accidents, and effectively solve the problems that the existing detection device cannot be portable real-time monitoring, the detection is inaccurate, and there is no wake-up function.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sensors, and particularly relates to a heart rate monitoring and stimulating device. BACKGROUND

[0002] Heart rate is the number of heartbeats per minute of a normal person in a quiet state, referred to as quiet heart rate or resting heart rate, and the heart rate of a normal person is about 60-100 times per minute. Heart rate below 60 times per minute is referred to as bradycardia, which is a pathological phenomenon of abnormal slow beating caused by heart disease. Many patients have bradycardia during sleep, and the patients themselves cannot timely find it, and serious patients can cause adverse consequences. Most of the current contact type heart rate monitoring devices have the problem of inaccurate detection, and do not have a wake-up function, and cannot wake up the patient with low heart rate in sleep. SUMMARY

[0003] In view of the above problems in the prior art, the present application provides a heart rate monitoring and stimulating device, which can accurately detect the change of human heart rate and timely remind when the heart rate is abnormal, so as to avoid accidents and effectively solve the problems of the existing detection device, such as non-portable real-time detection, inaccurate detection and no wake-up function.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application to solve its technical problems is:

[0005] A heart rate monitoring and stimulating device, comprising a ring-shaped packaging shell, the inside of the ring-shaped packaging shell comprises, from top to bottom, a polarized piezoelectric film, a magnetic elastomer film, an electromagnetic coil, a charge collection module, a Bluetooth module and a power module, the polarized piezoelectric film is connected with an electrode, the electrode is electrically connected with the charge collection module, and the electromagnetic coil is electrically connected with the power module.

[0006] In the above-mentioned scheme, the heart rate signal of the human body is collected by the polarized piezoelectric film, the heart rate signal of the human body is converted into an electric signal, then the electric signal is sent to a mobile terminal through the Bluetooth module by the charge collection module, and the heart rate condition is monitored in real time through the mobile terminal; when the heart rate signal detected by the mobile terminal is abnormal, the mobile terminal controls the electromagnetic coil to be in a connected state, the electromagnetic coil is powered by the power module, the electromagnetic coil drives the magnetic elastomer film to vibrate mechanically, so as to stimulate the human skin and play a wake-up role.

[0007] Further, the diameter of the polarized piezoelectric film is 17-19 mm, and the thickness is 2-4 um.

[0008] In the above-mentioned scheme, the polarized piezoelectric film is set to the above-mentioned thickness, which can improve the attachment effect with the human skin and realize accurate detection of physiological signals.

[0009] Further, the polarization piezoelectric film is provided with encapsulation layers on both sides.

[0010] In the above scheme, the encapsulation layer is a polyurethane film, and the encapsulation layer can block the interference of the external environment on the piezoelectric film device, thereby improving the sensitivity of detection.

[0011] Further, the polarization piezoelectric film is prepared by the following method:

[0012] (1) Poly (vinylidene fluoride-trifluoroethylene) copolymer is mixed with dimethylformamide and stirred to dissolve, then barium titanate particles coated with polydopamine are added and mixed to obtain a mixed solution, the mixed solution is spin-coated on a substrate and dried, then annealing treatment is performed in a vacuum environment, then the substrate is placed in water and ultrasonic separation treatment is performed to obtain a piezoelectric film.

[0013] (2) Metal electrodes are prepared on both sides of the piezoelectric film, and polarization treatment is performed to obtain the polarization piezoelectric film.

[0014] In the above scheme, the surface polydopamine layer reduces the surface energy of barium titanate during preparation, thereby promoting uniform dispersion of barium titanate; annealing the dried substrate can enhance the crystallization performance of the film, thereby improving the piezoelectric performance; the mixed solution is spin-coated into a film by spin coating, then the substrate is placed in water and ultrasonic treatment is performed to utilize the water phase to assist in peeling the piezoelectric film from the substrate, thereby obtaining an ultrathin piezoelectric film; and since the piezoelectric film is in water, the water reduces the electrostatic adsorption ability of the film, thereby avoiding the phenomenon of self-shrinkage of the piezoelectric film.

[0015] Further, in step (1), the annealing temperature is 120-140℃, and the annealing time is 4-12h.

[0016] In the above scheme, annealing the material in this temperature range can achieve the purpose of annealing without causing recrystallization or melting of the material, thereby affecting the crystal structure and piezoelectricity; the longer the annealing time, the better the defect elimination effect.

[0017] Further, in step (2), the polarization treatment parameters are: polarization temperature 28-32℃, polarization electric field 95-105kV mm -1 , polarization time 25-35min.

[0018] Further, the diameter of the magnetoelastic film is 17-19mm, and the thickness is 0.8-1.2mm.

[0019] In the above scheme, the magnetoelastic film is set to the above diameter, so that the resonance frequency of the magnetoelastic film is close to the sensitive frequency of human skin, thereby improving the resonance effect with the skin.

[0020] Further, the magneto-elastic film is prepared by the following method: mixing polydimethylsiloxane monomer and initiator, then adding neodymium-iron-boron magnetic powder to the mixture, stirring and mixing, removing bubbles from the mixed solution, pouring the mixed solution into a mold and drying to obtain a magneto-elastic film precursor, and then magnetizing the magneto-elastic film.

[0021] In the above scheme, the mixed solution after bubble removal still contains a proper amount of micro-bubbles, so that the prepared magneto-elastic film is a flexible thin film with a porous structure, and the magneto-elastic film is magnetized to have magnetism.

[0022] Further, the mass ratio of polydimethylsiloxane monomer to neodymium-iron-boron magnetic powder is 10:4-7.

[0023] Further, the initiator is a siloxane compound or silicone.

[0024] The beneficial effects of the present application are:

[0025] 1. In the present application, the piezoelectric film prepared by the water phase assisted exfoliation technology has a thickness of only about 3 μm, which is an ultrathin piezoelectric film, and is beneficial to improve the adhesion to the human skin, realize accurate detection of physiological signals, and improve the detection effect; the piezoelectric film prepared by the water phase assisted exfoliation technology is in a water environment, which reduces the electrostatic adsorption capacity of the film and avoids the self-shrinkage phenomenon of the film.

[0026] 2. In the present application, a magneto-elastic film based on neodymium-iron-boron magnetic powder doped polydimethylsiloxane matrix is developed, which has good flexibility and can further improve the adhesion to the human skin.

[0027] 3. In the present application, a detection device based on the integration of piezoelectric sensing and electromagnetic excitation is constructed, which can monitor heart rate in real time, and when the heart rate is abnormal, the electromagnetic device can stimulate the human skin to realize the awakening in the sleep state. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a photo of the exfoliation of the piezoelectric film in Example 1.

[0029] Figure 2 It is a scanning electron microscope picture of the cross-section of the piezoelectric film in Example 1.

[0030] Figure 3 It is a piezoelectric charge coefficient statistical diagram of piezoelectric films with different barium titanate contents.

[0031] Figure 4 It is a piezoelectric voltage coefficient statistical diagram of piezoelectric films with different barium titanate contents.

[0032] Figure 5 It is a photo of the magneto-elastic film.

[0033] Figure 6 Statistical diagram of simulated resonance of magnetic elastomer films with different diameters;

[0034] Figure 7 Stress-strain diagram of the magnetic elastomer film in Example 1;

[0035] Figure 8 Statistical diagram of magnetization of the magnetic elastomer film in Example 1;

[0036] Figure 9 Structural schematic diagram of a heart rate monitoring and stimulating device;

[0037] Figure 10 Workflow schematic diagram of a heart rate monitoring and stimulating device;

[0038] Figure 11 Physical diagram of a heart rate monitoring and stimulating device;

[0039] Figure 12 Wearing schematic diagram of a heart rate monitoring and stimulating device;

[0040] Figure 13 Statistical diagram of heart rate monitoring data and response data during stimulation. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, that is, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments.

[0042] Therefore, the detailed description of the embodiments of the present application provided below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0043] It is to be noted that the terms "first" and "second" and similar such relational terms are used merely to differentiate one entity or action from another, without necessarily requiring or implying any such actual relationship or order between the entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by an "comprising" statement serves as a means plus function limitation.

[0044] The features and characteristics of the present application will be further described in detail with reference to the embodiments and the accompanying drawings.

[0045] Embodiment 1

[0046] A heart rate monitoring and incentive device, comprising a ring-shaped packaging shell, the inside of the ring-shaped packaging shell comprises, from top to bottom, a polarized piezoelectric film, a magnetoelastic film, an electromagnetic coil, a charge collection module, a Bluetooth module and a power module, an electrode is connected to the polarized piezoelectric film, the electrode is electrically connected to the charge collection module, and the electromagnetic coil is electrically connected to the power module.

[0047] Among them, the polarized piezoelectric film is provided with a packaging layer on both sides, the diameter of the polarized piezoelectric film is 18mm, and the thickness is 3μm;

[0048] It is prepared by the following method:

[0049] (1) Poly (vinylidene fluoride-trifluoroethylene) copolymer and dimethylformamide are mixed in a mass ratio of 1:9, then stirred and dissolved, then barium titanate particles coated with polydopamine are added and mixed to obtain a mixed solution, the mixed solution is drop-coated on a circular glass substrate with a diameter of 40mm, then spin-coated at a speed of 500rpm for 10s, then spin-coated at a speed of 2000rpm for 30s, then the glass substrate is dried at 80℃, then annealed at a temperature of 130℃ in a vacuum environment for 10h, then the substrate is placed in water and ultrasonically treated for 5min, then the piezoelectric film is separated from the glass substrate to obtain the piezoelectric film;

[0050] (2) Metal Ag electrodes are prepared on both sides of the piezoelectric film, and polarization treatment is performed, the treatment parameters are: polarization temperature 30℃, polarization electric field 100kV mm -1 , polarization time 30min, after the polarization treatment is completed, stand for 24h to eliminate the surface polarization charge.

[0051] The diameter of the magnetoelastic film is 18 mm, and the thickness is 1 mm. The magnetoelastic film is prepared by the following method: mixing polydimethylsiloxane monomer and dimethylsiloxane monomer at a mass ratio of 10:1, then adding neodymium-iron-boron magnetic powder to the mixture, the mass ratio of polydimethylsiloxane monomer to neodymium-iron-boron magnetic powder is 10:6, stirring and mixing uniformly, defoaming the mixed solution, then pouring the mixed solution into a mold and performing crosslinking reaction in a vacuum oven at 50°C for 12 hours, drying, to obtain a magnetoelastic film precursor, then performing magnetization treatment on the magnetoelastic film, the magnetization treatment parameters are: the output voltage of the magnetizing machine is 2500V, the magnetic field is 2 Tesla, and the magnetizing capacity is 20000 Oersted.

[0052] In the preparation of the heart rate monitoring and excitation device, the polarized piezoelectric film is pasted on the surface of the magnetoelastic film, and the sensing and driving excitation are integrated. Then, a flexible polyurethane ring with an inner diameter of 18 mm, an outer diameter of 20 mm, and a height of 3 mm is prepared by laser cutting, which is a ring-shaped packaging shell. The polarized piezoelectric film and the magnetoelastic film are embedded and fixed on the upper surface of the ring-shaped packaging shell. A circular polymethyl methacrylate disc (thickness 150 μm) with a diameter of 22 mm is made by laser cutting. A circular electromagnetic coil (diameter 5 mm, height 0.7 mm, wire diameter 0.02, number of turns 1500) is adhered to the center of the polymethyl methacrylate disc and is integrally adhered and fixed to the lower surface of the ring-shaped packaging shell. Then, the charge collection module, the Bluetooth module and the power supply module are installed at the lower part of the electromagnetic coil. At the same time, the piezoelectric film electrode is connected with the charge collection module, and the power supply module is connected with the electromagnetic coil pin, to obtain the heart rate monitoring and excitation device.

[0053] Example 2

[0054] A heart rate monitoring and excitation device includes a ring-shaped packaging shell, and the inside of the ring-shaped packaging shell includes, from top to bottom, a polarized piezoelectric film, a magnetoelastic film, an electromagnetic coil, a charge collection module, a Bluetooth module and a power supply module. The polarized piezoelectric film is connected with an electrode, the electrode is electrically connected with the charge collection module, and the electromagnetic coil is electrically connected with the power supply module.

[0055] The polarized piezoelectric film is provided with a packaging layer on both sides, and the diameter of the polarized piezoelectric film is 17 mm and the thickness is 2 μm.

[0056] The polarized piezoelectric film is prepared by the following method:

[0057] (1) Poly(vinylidene fluoride-trifluoroethylene) copolymer and dimethylformamide were mixed in a mass ratio of 2:8, stirred and dissolved, then barium titanate particles coated with polydopamine were added thereto and mixed to obtain a mixed solution, the mixed solution was drop-coated on a circular glass substrate with a diameter of 40 mm, then spin-coated at a speed of 500 rpm for 10 s and at a speed of 2000 rpm for 30 s, then the glass substrate was dried at 80°C, then annealed at a temperature of 120°C for 8 h in a vacuum environment, then the substrate was placed in water and ultrasonically treated for 5 min, the piezoelectric film was separated from the glass substrate, and a piezoelectric film was obtained.

[0058] (2) Metal Ag electrodes were prepared on both sides of the piezoelectric film, and polarization treatment was performed, with the treatment parameters being: polarization temperature 28°C, polarization electric field 95 kV / mm, polarization time 25 min, to obtain a polarization treatment, and after the polarization treatment was completed, the surface polarization charge was eliminated by standing for 24 h. -1

[0059] The diameter of the magnetoelastic film is 17 mm and the thickness is 0.8 mm. The magnetoelastic film is prepared as follows: polydimethylsiloxane monomer and dimethylsiloxane monomer are mixed in a mass ratio of 10:1, then neodymium-iron-boron magnetic powder is added thereto, the mass ratio of polydimethylsiloxane monomer to neodymium-iron-boron magnetic powder being 10:5, the mixed solution is stirred and mixed uniformly, then deaeration treatment is performed on the mixed solution, then the mixed solution is poured into a mold and crosslinking reaction is performed in a 50°C vacuum oven for 12 h, and the magnetoelastic film precursor is obtained after drying. Then the magnetoelastic film is magnetized, with the magnetization treatment parameters being: output voltage of the magnetizer 2500 V, magnetic field 2 Tesla, and magnetization capacity 20000 Oersted.

[0060] In the preparation of the above heart rate monitoring and excitation device, the polarization piezoelectric film is pasted on the surface of the magnetoelastic film, and sensing and driving excitation are integrated. Then, a flexible polyurethane ring with an inner diameter of 18 mm, an outer diameter of 20 mm, and a height of 3 mm is prepared by laser cutting, which is a ring-shaped packaging shell. The polarization piezoelectric film and the magnetoelastic film are embedded and fixed on the upper surface of the ring-shaped packaging shell. A circular polymethyl methacrylate disc (thickness 150 μm) with a diameter of 22 mm is made by laser cutting. A circular electromagnetic coil (diameter 5 mm, height 0.7 mm, wire diameter 0.02, number of turns 1500) is adhered to the center of the polymethyl methacrylate disc and is integrally adhered and fixed to the lower surface of the ring-shaped packaging shell. Then the charge collection module, the Bluetooth module and the power supply module are installed under the electromagnetic coil. The piezoelectric film electrode is connected to the charge collection module, and the power supply module is connected to the electromagnetic coil pin, to obtain the heart rate monitoring and excitation device.

[0061] Example 3

[0062] ​A heart rate monitoring and incentive device, comprising a ring-shaped packaging shell, the inside of the ring-shaped packaging shell comprises a polarized piezoelectric film, a magnetoelastic film, an electromagnetic coil, a charge collection module, a Bluetooth module and a power module from top to bottom, the polarized piezoelectric film is connected with an electrode, the electrode is electrically connected with the charge collection module, and the electromagnetic coil is electrically connected with the power module.

[0063] Wherein, the polarized piezoelectric film is provided with a packaging layer on both sides, the diameter of the polarized piezoelectric film is 19mm, and the thickness is 4μm;

[0064] It is prepared by the following method:

[0065] (1) Poly (vinylidene fluoride-trifluoroethylene) copolymer and dimethylformamide are mixed in a mass ratio of 1:9, then stirred and dissolved, then barium titanate particles coated with polydopamine are added and mixed, to obtain a mixed solution, the mixed solution is drop-coated on a circular glass substrate with a diameter of 40mm, then spin-coated at a speed of 500rpm for 10s, then spin-coated at a speed of 2000rpm for 30s, then the glass substrate is dried at 80℃, then annealed at a vacuum environment and an annealing temperature of 140℃ for 6h, then the substrate is placed in water and ultrasonically treated for 5min, the piezoelectric film is separated from the glass substrate, and the piezoelectric film is obtained.

[0066] (2) Metal Ag electrodes are prepared on both sides of the piezoelectric film, and polarization treatment is performed, the treatment parameters are: polarization temperature 32℃, polarization electric field 105kV mm -1 , polarization time 35min, after polarization treatment, stand for 24h to eliminate the surface polarization charge.

[0067] Wherein, the diameter of the magnetoelastic film is 19mm, and the thickness is 1.2mm; the magnetoelastic film is prepared by the following method: polydimethylsiloxane monomer and dimethylsiloxane monomer are mixed in a mass ratio of 10:1, then neodymium iron boron magnetic powder is added, the mass ratio of polydimethylsiloxane monomer to neodymium iron boron magnetic powder is 10:7, the mixed solution is stirred and mixed uniformly, then deaeration treatment is performed, then the mixed solution is poured into a mold and crosslinked in a 50℃ vacuum oven for 12h, dried, to obtain a magnetoelastic film precursor, then the magnetoelastic film is magnetized, the magnetization treatment parameters are: output voltage of the magnetizer is 2500V, magnetic field is 2tesla, and magnetization capacity is 20000oersted.

[0068] The heart rate monitoring and excitation device is prepared by pasting the polarized piezoelectric film on the surface of the magnetoelastic film, integrating the sensing and driving excitation, then using laser cutting to prepare a flexible polyurethane ring with an inner diameter of 18 mm, an outer diameter of 20 mm, and a height of 3 mm, i.e. a ring-shaped packaging shell, embedding and fixing the polarized piezoelectric film and the magnetoelastic film on the upper surface of the ring-shaped packaging shell, using laser cutting to prepare a circular polymethyl methacrylate disc (thickness 150 μm) with a diameter of 22 mm, adhering a circular electromagnetic coil (diameter 5 mm, height 0.7 mm, wire diameter 0.02, number of turns 1500) to the center of the polymethyl methacrylate disc, and integrally adhering and fixing it to the lower surface of the ring-shaped packaging shell, then installing the charge collection module, the Bluetooth module and the power supply module under the electromagnetic coil, connecting the piezoelectric film electrode to the charge collection module, and connecting the power supply module to the electromagnetic coil pins, to obtain the heart rate monitoring and excitation device.

[0069] Test Example

[0070] Figure 1 For the piezoelectric film peeling photo in Example 1, it can be seen that the prepared piezoelectric film is an ultrathin film, which is easy to peel off from the substrate.

[0071] Figure 2 For the piezoelectric film cross-section scanning electron micrograph in Example 1, it can be further seen that the thickness of the piezoelectric film is only 2.85 μm, which is an ultrathin film.

[0072] Taking the device and preparation method in Example 1 as an example, the content of barium titanate is adjusted, and piezoelectric films with different contents of barium titanate are prepared, and the performance of the piezoelectric films is tested, and the results are shown in Figure 3 and 4 , Figure 3 The piezoelectric charge coefficient statistical diagram of the piezoelectric films with different contents of barium titanate is shown in Figure 4 The piezoelectric voltage coefficient statistical diagram of the piezoelectric films with different contents of barium titanate can be seen that, with the increase of the content of barium titanate, the piezoelectric charge coefficient gradually increases, and the piezoelectric voltage constant shows a trend of first increasing and then decreasing, and when the content of barium titanate is 10%, the performance of the piezoelectric film is optimal.

[0073] Figure 5 The photo of the magnetoelastic film can be seen that the magnetoelastic film has good toughness.

[0074] Taking the device and preparation method in Example 1 as an example, the diameter of the magnetoelastic film is adjusted, and magnetoelastic films with different diameters are prepared, and the resonance of the prepared magnetoelastic films is tested, and the specific results are shown in Figure 6 , Figure 6 The simulated resonance condition statistical diagram of the magnetoelastic films with different diameters can be seen that when the diameter of the magnetoelastic film is 18 mm, the resonance frequency is closest to that of the human skin.

[0075] For example, the magnetic and mechanical flexibility of the magnetoelastic film in Example 1 were tested, and the specific results are shown in Figure 7 and 8 , Figure 7 For example, the stress-strain diagram of the magnetoelastic film in Example 1 is shown in Figure 8 For example, the stress-strain diagram of the magnetoelastic film in Example 1 is shown in

[0076] For example, the piezoelectric film, magnetoelastic film device and preparation method in Example 1 were used, the overall structure of the device is shown in Figure 9 , and the operation flow is shown in Figure 10 The middle support ring is made of polyurethane material, which ensures the flexibility of the sensing and excitation end of the device, and can be closely attached to the human monitoring part; the bottom signal processing circuit realizes the collection of piezoelectric film signal, and at the same time transmits the Bluetooth to the mobile phone end, through the mobile phone end to judge whether the heart rate is normal, when abnormal, the bottom circuit transmits a current signal with a frequency of 200Hz to the AC coil, and uses electromagnetic induction to cause the magnetoelastic film to vibrate, which plays a stimulating effect on human skin to remind the user.

[0077] For example, the entire integrated device is shown in Figure 11 The device and the necklace are fixed to facilitate human wear, and the final wearing effect is shown in Figure 12 The device is worn on the neck of the human body to realize real-time monitoring and feedback stimulation of the human heart rate signal.

[0078] For example, the actual application of the integrated device worn by the human body is shown in Figure 13 The device can accurately monitor the human heart rate signal Figure 13 (a), at the same time, based on the algorithm, the real-time heart rate Figure 13 (b) is calculated, and when the heart rate is abnormal, the magnetoelastic film produces mechanical vibration excitation, and the excitation signal can be seen through the piezoelectric film signal. Since the piezoelectric film and the magnetoelastic film are fixed together, the vibration of the magnetoelastic film causes the piezoelectric film to generate the same frequency piezoelectric signal, as shown in Figure 13 (c), after stimulation, the human body makes corresponding adjustment, and the device will continue to monitor the heart rate signal.

Claims

1. A heart rate monitoring and excitation device, characterized in that, The device includes an annular encapsulation shell, inside which, from top to bottom, are a polarized piezoelectric thin film, a magnetoelastic film, an electromagnetic coil, a charge harvesting module, a Bluetooth module, and a power module. Electrodes are connected to the polarized piezoelectric thin film, and the electrodes are electrically connected to the charge harvesting module. The electromagnetic coil is electrically connected to the power module. Encapsulation layers are provided on both sides of the polarized piezoelectric thin film. The heart rate monitoring and excitation device collects human heart rate signals through a polarized piezoelectric thin film, converts the human heart rate signals into electrical signals, and then uses a charge acquisition module to send the electrical signals to a mobile terminal via a Bluetooth module, allowing the mobile terminal to monitor the heart rate in real time. When the mobile terminal detects an abnormal heart rate signal, the mobile terminal controls the electromagnetic coil to be in a connected state, and supplies power to the electromagnetic coil through the power module. The electromagnetic coil drives the magnetoelastic membrane to vibrate mechanically, thereby stimulating the human skin and waking it up.

2. The heart rate monitoring and excitation device as described in claim 1, characterized in that, The polarized piezoelectric thin film has a diameter of 17-19 mm and a thickness of 2-4 μm.

3. The heart rate monitoring and stimulation device as described in claim 1 or 2, characterized in that, The polarized piezoelectric thin film is prepared by the following method: (1) After mixing poly(vinylidene fluoride-trifluoroethylene) copolymer with dimethylformamide and stirring to dissolve, barium titanate particles coated with polydopamine are added to it and mixed to obtain a mixed solution. The mixed solution is spin-coated onto the substrate and dried. Then, it is annealed in a vacuum environment. Then, the substrate is placed in water and ultrasonically separated to obtain a piezoelectric film. (2) Prepare metal electrodes on both sides of the piezoelectric thin film and perform polarization treatment to obtain the film.

4. The heart rate monitoring and excitation device as described in claim 3, characterized in that, In step (1), the annealing temperature is 120-140℃ and the annealing time is 4-12h.

5. The heart rate monitoring and excitation device as described in claim 3, characterized in that, The polarization parameters in step (2) are: polarization temperature 28-32℃, polarization electric field 95-105 kV mm. -1 Polarization time 25-35 min.

6. The heart rate monitoring and excitation device as described in claim 1, characterized in that, The diameter of the magnetic elastomer film is 17-19 mm, and the thickness is 0.8-1.2 mm.

7. The heart rate monitoring and stimulation device as described in claim 1 or 6, characterized in that, The magnetic elastomer film is prepared by the following method: polydimethylsiloxane monomer is mixed with an initiator, neodymium iron boron magnetic powder is added, the mixture is stirred and mixed evenly, the mixed solution is defoamed, the mixed solution is poured into a mold and dried to obtain a magnetic elastomer film precursor, and then the magnetic elastomer film is magnetized to obtain the final product.

8. The heart rate monitoring and stimulation device as described in claim 7, characterized in that, The mass ratio of the polydimethylsiloxane monomer to the neodymium iron boron magnetic powder is 10:4-7.

9. The heart rate monitoring and excitation device as described in claim 7, characterized in that, The initiator is a siloxane compound.

10. The heart rate monitoring and stimulation device as described in claim 9, characterized in that, The siloxane compound is a silicone.

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