Circuit structure of cervical vertebra massager

Abstract

The utility model relates to a kind of cervical vertebra massager circuit structure, including main control circuit, EMS circuit, heating circuit, vibration massage circuit, the main control circuit is connected EMS circuit, heating circuit and vibration massage circuit respectively, still including NFC card reader, the NFC card reader connects main control circuit to read and transmit to main control circuit in the anti-fake code of preset in NFC label close to it, and after its correct identification in main control circuit, control EMS circuit, heating circuit and the work of vibration massage circuit. It can identify its anti-fake code, if anti-fake code is correct, the microcontroller control EMS circuit, heating circuit and vibration massage circuit, can effectively identify and anti-fake to the authenticity of cervical vertebra massager.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit structure of cervical spine massagers, and in particular to a circuit structure of a cervical spine massager. Background Technology

[0002] Neck massagers are health care devices designed for the neck and surrounding muscles. They relieve muscle tension and improve blood circulation through physical massage, electrical pulse stimulation, or heat therapy. The following analysis covers their technical principles, product classification, market trends, and safe use:

[0003] The functionality of neck massagers mainly relies on three technological approaches:

[0004] Physical kneading technology uses motor-driven mechanical structures (such as gear sets and eccentric wheels) to simulate the kneading, pounding, and massaging movements of human hands. For example, high-end products may use a dual-motor system and a bionic massage head design to ensure even pressure and coverage of key areas such as the trapezius muscle. The advantages of this type of technology are its realistic feel and high safety, making it suitable for people who prefer a traditional massage experience. However, attention should be paid to the quality of the motor—inferior motors may cause excessive noise, unstable pressure, or even muscle damage.

[0005] Electrical pulse stimulation (EPS) technology uses low-frequency pulsed current (typically 20-200Hz) to stimulate muscle contraction, similar to the principle of EMS (electromuscular stimulation). Users contact the skin with electrode pads, and an MCU controls the amplitude, frequency, and duty cycle of the pulses to achieve different intensities of "massage sensation." These products are lightweight (such as neckband styles), but caution is needed regarding the risk of unstable current—non-professional products may cause neuromuscular disorders due to overstimulation, and long-term use may reduce muscle elasticity.

[0006] Most products using heat therapy technology offer heat as an auxiliary function, controlling the temperature at 40-50℃ through PTC heating pads or graphene materials to promote local blood circulation. For example, graphene heating technology can achieve rapid heating in 5 seconds and has good temperature stability. Heat therapy has a significant relieving effect on cold exposure or chronic strain, but people with sensitive skin should choose materials carefully to avoid allergies or burns.

[0007] With the increasing popularity of neck massagers, their sales have been growing year by year. High-quality, reputable neck massagers are very popular with consumers and occupy a large market share. However, some low-quality neck massagers, which don't sell well, may be counterfeited and sold as genuine reputable brands. These counterfeiters attract consumers with their low prices, but due to their poor quality, consumers may experience problems such as insufficient pulse current and low temperature, leading to a poor user experience and damaging the reputation of legitimate neck massager manufacturers. Currently, there is no effective solution to the problem of anti-counterfeiting and authenticity verification of neck massagers, preventing the use of inferior substitutes. Utility Model Content

[0008] This utility model addresses the shortcomings of the existing technology by providing a circuit structure for a cervical massager that can identify its anti-counterfeiting code. If the anti-counterfeiting code is correct, the microcontroller controls the EMS circuit, heating circuit, and vibration massage circuit, effectively identifying and preventing the counterfeit of the cervical massager.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A cervical spine massager circuit structure includes a main control circuit, an EMS circuit, a heating circuit, and a vibration massage circuit, wherein the main control circuit is connected to the EMS circuit, the heating circuit, and the vibration massage circuit respectively.

[0011] It also includes an NFC card reader, which is connected to the main control circuit to read the preset anti-counterfeiting code in the NFC tag that is close to it and transmit it to the main control circuit. After the main control circuit recognizes the code correctly, it controls the operation of the EMS circuit, the heating circuit and the vibration massage circuit.

[0012] As a preferred embodiment, it also includes a charging interface for connecting to a charging power source, a charging management circuit connected to the charging interface, and a rechargeable battery for power supply.

[0013] The charging interface, charging management circuit, and rechargeable battery are connected in sequence, and the charging interface and charging management circuit are respectively connected to the main control circuit.

[0014] As a preferred embodiment, the battery also includes a 3.3V power supply circuit for providing a 3.3V voltage, and the rechargeable battery is connected to the 3.3V power supply circuit.

[0015] As a preferred embodiment, it also includes a VRF voltage power supply circuit for providing VRF voltage to the vibration massage circuit, the VRF voltage power supply circuit being connected to both the main control circuit and the vibration massage circuit.

[0016] As a preferred embodiment, the vibration massage circuit includes a vibration motor and a vibration motor drive circuit for driving the vibration motor. The vibration motor drive circuit is connected to the vibration motor via interface J3 and is connected to the main control circuit.

[0017] As a preferred embodiment, the vibration motor drive circuit is composed of a vibration motor drive chip U5 with model number TC8301 and its peripheral circuits.

[0018] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, it mainly uses the cooperation of an NFC card reader and an NFC tag. The NFC tag and the main control circuit have the same anti-counterfeiting code preset. When the NFC tag is close to the NFC card reader, the NFC tag and the main control circuit establish an NFC wireless connection. The NFC card reader can then read the anti-counterfeiting code in the NFC tag, and the main control circuit can then identify the anti-counterfeiting code. If the anti-counterfeiting code is correct, the microcontroller controls the EMS circuit, the heating circuit, and the vibration massage circuit, which can effectively identify and prevent the counterfeiting of the cervical massager.

[0019] The overall circuit structure is cleverly and reasonably designed, especially the specific circuit structure of the EMS circuit. Through "boost + bridge drive", it not only solves the high-voltage power supply required by EMS, but also flexibly controls the polarity and intensity of the stimulation signal to meet different muscle stimulation needs. Attached Figure Description

[0020] Figure 1 This is a general control principle block diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a partial circuit diagram of an embodiment of the present invention (mainly showing the vibration massage circuit);

[0022] Figure 3 This is a second partial circuit schematic diagram of an embodiment of the present invention (mainly showing the heating circuit);

[0023] Figure 4 This is a schematic diagram of the third partial circuit of an embodiment of the present invention (mainly showing the main control circuit);

[0024] Figure 5 This is a schematic diagram of the fourth partial circuit of an embodiment of the present invention (mainly showing the VRF voltage power supply circuit);

[0025] Figure 6 This is the fifth partial circuit schematic diagram of an embodiment of the present utility model (mainly showing the 3.3V voltage power supply circuit);

[0026] Figure 7This is a schematic diagram of the sixth partial circuit of an embodiment of the present invention (mainly showing the EMS circuit);

[0027] Figure 8 This is a schematic diagram of the seventh partial circuit of an embodiment of the present invention (mainly showing the charging interface and charging management circuit);

[0028] Explanation of icon numbers:

[0029] 11. Main control circuit 12. EMS circuit

[0030] 13. Heating circuit 14. Vibration massage circuit

[0031] 15. NFC card reader 16. NFC card reader antenna

[0032] 21. Charging interface 22. Charging management circuit

[0033] 23. Rechargeable battery; 24. 3.3V power supply circuit.

[0034] 25. VRF voltage power supply circuit

[0035] 31. NFC tag 32. NFC tag antenna. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1 to 8 As shown, a cervical spine massager circuit structure includes a main control circuit 11, an EMS circuit 12, a heating circuit 13, a vibration massage circuit 14, an NFC card reader 15, and a charging interface 21 for connecting to a charging power source (e.g., ...). Figure 8 The circuit includes: a middle interface J1), a charging management circuit 22 connected to the charging interface 21, a rechargeable battery 23 for power supply, a 3.3V voltage power supply circuit 24 for providing 3.3V voltage, and a VRF voltage power supply circuit 25 for providing VRF voltage to the vibration massage circuit 14.

[0038] The main control circuit 11 is connected to the EMS circuit 12, the heating circuit 13, and the vibration massage circuit 14. In this embodiment, the main control circuit 11 is composed of a main control chip U7 (model PY32F030E18M6TU) and its peripheral circuits. Pins 5, 6, 2, and 3 of the main control chip U7 are connected to the EMS circuit 12, pin 9 of the main control chip U7 is connected to the heating circuit 13, and pins 12, 19, and 18 of the main control chip U7 are connected to the vibration massage circuit 14.

[0039] In this embodiment, as Figure 2As shown, the vibration massage circuit 14 includes a vibration motor and a vibration motor drive circuit for driving the vibration motor. The vibration motor drive circuit is connected to the vibration motor through interface J3 and is connected to the main control circuit 11.

[0040] The vibration motor drive circuit consists of a vibration motor drive chip U5 (model TC8301) and its peripheral circuitry. Pins 19 and 18 of the main control chip U7 output signals to pins 2 and 3 of the vibration motor drive chip U5.

[0041] The VRF voltage power supply circuit 25 is connected to both the main control circuit 11 and the vibration massage circuit 14. In this embodiment, the VRF voltage power supply circuit 25 is composed of a chip U2 of model FP6291 and its peripheral circuits. Pin 15 of the main control chip U7 is connected to the VRF voltage power supply circuit 25.

[0042] The charging interface 21, charging management circuit 22, and rechargeable battery 23 are connected in sequence. The charging interface 21 and charging management circuit 22 are respectively connected to the main control circuit 11. In this embodiment, the charging management circuit 22 is composed of chip U1 and its peripheral circuits. The rechargeable battery 23 is connected to the charging management circuit 22 through interface J2, wherein the positive terminal of the rechargeable battery 23 is connected to pin 2 of interface J2.

[0043] The rechargeable battery 23 is connected to a 3.3V power supply circuit 24. In this embodiment, the 3.3V power supply circuit 24 is composed of a 6206 chip U3 and its peripheral circuits.

[0044] In this embodiment, the heating circuit 13 includes a heating element and a heating drive circuit for driving the heating element. The heating drive circuit is composed of a resistor R30, a resistor R28, a transistor Q12, and a MOSFET Q11. The drain of the MOSFET Q11 is connected to the heating element, and the resistor R30 is connected to pin 9 of the main control chip U7.

[0045] In this embodiment, the EMS circuit 12 is composed of inductor L2, resistors R19, R24, R18, R27, R15, R20, R25, R29, R21, R26, R16, R33, R34, capacitors C11, C10, and C14, diode D2, transistors Q5, Q6, Q7, Q9, Q10, Q13, and Q14, and its specific circuit connection relationship is shown in the figure.

[0046] E1 and E2 are the two output terminals of EMS circuit 12. The working principle of the EMS (Electrical Muscle Stimulation) circuit will be briefly explained below:

[0047] 1. Power supply boost stage:

[0048] Initial state: The circuit is powered on, and the 3.7V power supply powers the entire EMS circuit 12. At this time, the inductor L2 has not yet stored energy.

[0049] PWM signal control: Pin 5 of the main control chip U7 outputs a PWM1 pulse signal, which is connected to the base of transistor Q5 via resistor R19. When PWM1 is high, transistor Q5 is turned on.

[0050] Inductor energy storage: The 3.7V power supply forms a circuit through inductor L2 and the conducting Q5, and inductor L2 begins to store energy. At this time, the current in the inductor gradually increases.

[0051] Boosting Process: When PWM1 goes low, transistor Q5 is cut off. Since the current in the inductor cannot change abruptly, inductor L2 generates a reverse electromotive force (self-induced electromotive force), which is superimposed on the 3.7V power supply voltage. At this time, diode D2 conducts, and the superimposed voltage charges capacitor C10 through diode D2, achieving the boost function. This allows capacitor C10 to obtain a stable voltage higher than 3.7V, providing the required high-voltage power supply for subsequent circuits. Simultaneously, capacitor C11 and resistor R19 are connected in parallel to filter out high-frequency interference signals, ensuring the stability of the base signal of transistor Q5.

[0052] 2. Voltage sampling feedback stage:

[0053] Voltage divider sampling: The boosted voltage (voltage across capacitor C10) is divided by a voltage divider circuit consisting of resistors R18, R24, and R27. Resistor R18 has a relatively large resistance (680KΩ), and resistors R24 (1KΩ) and R27 (10KΩ) are connected in series with R18 to divide the voltage. The sampled voltage signal "EMS_ADC" is then extracted from across resistor R27.

[0054] Signal filtering: Capacitor C14 and resistor R24 ​​are connected in parallel to filter the sampled "EMS_ADC" signal, removing high-frequency noise and making the signal smoother and more stable.

[0055] Feedback Control: The filtered "EMS_ADC" signal is sent to pin 6 of the main control chip U7. The main control chip U7 compares this sampled voltage value with a preset target voltage value. If the sampled voltage value deviates from the target value, the MCU adjusts the duty cycle of the PWM1 signal. For example, when the sampled voltage value is higher than the target value, the MCU reduces the high-level duration of the PWM1 signal (reduces the duty cycle), thereby reducing the energy stored in inductor L2 and lowering the boosted voltage. Conversely, when the sampled voltage value is lower than the target value, the main control chip U7 increases the duty cycle of the PWM1 signal, increasing the boosted voltage, thus achieving closed-loop stable control of the output voltage.

[0056] 3. Push-pull amplification and drive output stage:

[0057] Control signal input: Pins 3 and 2 of the main control chip U7 output OUT1 and OUT2 control signals respectively, which are connected to the bases of transistors Q13 (NPN type) and Q14 (NPN type) through resistors R33 and R34 respectively, to control the conduction and cutoff states of transistors Q13 and Q14.

[0058] 4. Working principle of push-pull circuit:

[0059] The first push-pull circuit (transistors Q6 and Q10): Resistors R15, R20, R25, and R29 provide suitable bias voltages for transistors Q6 and Q10, enabling them to operate normally. When the OUT1 control signal is high, transistor Q13 conducts, causing the base potential of transistor Q10 to decrease, thus turning on Q10; simultaneously, the base potential of transistor Q6 increases, turning off Q6. At this time, current flows from the boosted power supply through transistor Q10 to the output terminal E1. When the OUT1 control signal is low, transistors Q13 and Q10 are off, and transistor Q6 conducts, allowing current to flow from the output terminal E1 through transistor Q6 to ground.

[0060] The second push-pull circuit (transistors Q7 and Q9): Its working principle is similar to the first group. Resistors R16, R21, and R26 provide bias for transistors Q7 and Q9. The OUT2 control signal controls the on / off state of transistors Q7 and Q9, thereby controlling the current flow from the boosted power supply to the output terminal E2 or from the output terminal E2 to ground.

[0061] Drive output: Through these two sets of push-pull circuits, the OUT1 control signal and OUT2 control signal output from pins 3 and 2 of the main control chip U7 are amplified, so that the output terminals E1 and E2 can output electrical stimulation signals with sufficient power to stimulate muscles to produce contraction and other responses, thereby realizing the muscle electrical stimulation function of EMS circuit 12.

[0062] In summary, the EMS circuit 12 in this embodiment provides high-voltage power through power supply boost, ensures stable output voltage through voltage sampling feedback, and generates appropriate electrical stimulation signals through push-pull amplification and drive output. The various stages work together to achieve effective electrical stimulation of muscles.

[0063] The NFC reader 15 is connected to the main control circuit 11 to read the preset anti-counterfeiting code in the NFC tag 31 that is close to it and transmit it to the main control circuit 11. After the main control circuit 11 correctly identifies the code, it controls the operation of the EMS circuit 12, the heating circuit 13 and the vibration massage circuit 14.

[0064] In this embodiment, the NFC tag 31 is detachably mounted on the cervical massager. The NFC tag 31 is connected to the NFC tag antenna 32, and the NFC reader 15 is connected to the NFC reader antenna 16. When the NFC tag 31 is installed, the NFC tag 31 and the NFC tag antenna 32 are brought close to the NFC reader 15 and the NFC reader antenna 16. The NFC reader 15 automatically reads the preset anti-counterfeiting code in the NFC tag 31 and transmits it to the main control circuit 11. Since the main control circuit 11 also stores the anti-counterfeiting code, it can identify it. If the anti-counterfeiting code is correct, the main control circuit 11 can control the corresponding circuit.

[0065] The key design feature of this utility model is that it mainly utilizes the cooperation between an NFC reader and an NFC tag. The NFC tag and the main control circuit have the same anti-counterfeiting code preset. When the NFC tag is brought close to the NFC reader, the NFC tag and the main control circuit establish an NFC wireless connection. The NFC reader can then read the anti-counterfeiting code in the NFC tag, and the main control circuit can identify the anti-counterfeiting code. If the anti-counterfeiting code is correct, the microcontroller controls the EMS circuit, the heating circuit, and the vibration massage circuit, which can effectively identify and prevent counterfeiting of the cervical massager.

[0066] The overall circuit structure is cleverly and reasonably designed, especially the specific circuit structure of the EMS circuit. Through "boost + bridge drive", it not only solves the high-voltage power supply required by EMS, but also flexibly controls the polarity and intensity of the stimulation signal to meet different muscle stimulation needs.

[0067] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A circuit structure for a cervical spine massager, comprising a main control circuit, an EMS circuit, a heating circuit, and a vibration massage circuit, wherein the main control circuit is connected to the EMS circuit, the heating circuit, and the vibration massage circuit, characterized in that: It also includes an NFC card reader, which is connected to the main control circuit to read the preset anti-counterfeiting code in the NFC tag that is close to it and transmit it to the main control circuit. After the main control circuit recognizes the code correctly, it controls the operation of the EMS circuit, the heating circuit and the vibration massage circuit.

2. The circuit structure of the cervical spine massager according to claim 1, characterized in that: It also includes a charging interface for connecting to a charging power source, a charging management circuit connected to the charging interface, and a rechargeable battery for power supply. The charging interface, charging management circuit, and rechargeable battery are connected in sequence, and the charging interface and charging management circuit are respectively connected to the main control circuit.

3. The cervical massager circuit structure according to claim 2, characterized in that: It also includes a 3.3V power supply circuit for providing a 3.3V voltage, and the rechargeable battery is connected to the 3.3V power supply circuit.

4. The circuit structure of the cervical massager according to claim 2, characterized in that: It also includes a VRF voltage power supply circuit for providing VRF voltage to the vibration massage circuit, which is connected to both the main control circuit and the vibration massage circuit.

5. The cervical massager circuit structure according to claim 1, characterized in that: The vibration massage circuit includes a vibration motor and a vibration motor drive circuit for driving the vibration motor. The vibration motor drive circuit is connected to the vibration motor via interface J3 and is connected to the main control circuit.

6. The circuit structure of the cervical massager according to claim 5, characterized in that: The vibration motor drive circuit consists of a vibration motor drive chip U5 with model number TC8301 and its peripheral circuits.

Images