CN218499020U - Control circuit for electrode of massage beauty instrument - Google Patents
Control circuit for electrode of massage beauty instrument Download PDFInfo
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- CN218499020U CN218499020U CN202222830078.9U CN202222830078U CN218499020U CN 218499020 U CN218499020 U CN 218499020U CN 202222830078 U CN202222830078 U CN 202222830078U CN 218499020 U CN218499020 U CN 218499020U
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Abstract
The utility model provides a control circuit for massage beauty instrument electrode, including MCU and boost circuit and a plurality of drive circuit be connected with the MCU electricity, every drive circuit all be connected with boost circuit, and every drive circuit be connected with corresponding electrode, the voltage VCC after stepping up gives the drive circuit power supply to switch on and end according to corresponding control logic control drive circuit and electrode through MCU to control electrode's waveform. The utility model can not only enhance the driving current of the double MOS PJT7838, but also achieve the purpose of controlling high voltage by low voltage through the driving chip DGD0506 AFN-7A; adopt DC to change DC's mode, for prior art's mutual inductance mode of stepping up, the utility model discloses a process efficiency of stepping up can reach 87%, has efficiently, and calorific capacity is few advantage avoids using a large amount of PCB boards simultaneously, has reduced the overall cost of circuit.
Description
Technical Field
The utility model belongs to the technical field of massage beauty instrument technique and specifically relates to a massage beauty instrument control circuit for electrode.
Background
In order to prevent facial muscle aging, people usually use chemical cosmetics such as wrinkle removing cream, astringent, etc. to care and remove wrinkles on the face, or perform beauty massage in beauty parlor; meanwhile, some physical beauty massagers are available in the market, and the beauty massagers mainly control the massage electrodes through a control circuit, so that the current, vibration, heating and the like of the massage electrodes are controlled to realize facial massage.
The control circuit of the existing massage beauty instrument adopts a transformer mutual inductance boosting mode, in addition, the RF output needs to use a magnet in the boosting process, and the boosting mode is at least a PCB board with more than 4 layers, so that the cost of the PCB base material is better, and the overall cost of the control circuit is higher;
secondly, because of the use of multilayer PCB boards, the occupied space of the control circuit is large, in addition, the temperature rise speed of the existing control circuit is high due to the boosting mode, therefore, a corresponding temperature detection device needs to be designed for temperature detection and feedback, when the temperature exceeds a certain standard, the circuit needs to be cut off to reduce the temperature, and the structure of the circuit is more complex.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a control circuit for an electrode of a massage beauty instrument.
The technical scheme of the utility model is that: the utility model provides a control circuit for massage beauty instrument electrode, includes MCU and the boost circuit who is connected with MCU electricity and a plurality of drive circuit, every drive circuit all be connected with boost circuit, and every drive circuit with corresponding electrode connection, the voltage after stepping up gives drive circuit power supply to through MCU according to corresponding control logic control drive circuit's break-make.
Preferably, the boosting circuit comprises a chip MIC2605YML-TR and a digital potentiometer MCP4014T-503E/OT, a 2 nd pin of the chip MIC2605YML-TR is connected with a 12V input power supply, and a 1 st pin of the chip MIC2605YML-TR outputs boosted voltage VCC and is connected with the driving circuit;
the pins 3, 5 and 8 of the chip MIC2605YML-TR are grounded GND;
the 4 th pin and the 7 th pin of the MIC2605 chip YML-TR are connected;
the 6 th pin of the chip MIC2605YML-TR is connected with the 5 th pin of the digital potentiometer MCP 4014T-503E/OT;
the 3 rd and 4 th pins of the digital potentiometer MCP4014T-503E/OT are respectively connected with the 15 th and 14 th pins of the MCU.
Preferably, the 1 st pin of the digital potentiometer MCP4014T-503E/OT is connected with a 3.3V power supply, and the 2 nd pin is connected with a ground GND.
Preferably, the 2 nd pin of the MIC2605YML-TR chip is further connected with a capacitor C16 and a capacitor C17, and the other ends of the capacitor C16 and the capacitor C17 are grounded GND.
Preferably, the driving circuit comprises a driving chip U1 and a chip PJT7838, wherein the 1 st pin of the chip PJT7838 is connected to the electrode, and the 1 st and 3 rd pins of the chip PJT7838 are further connected to the 2 nd and 4 th pins of the driving chip U1;
the No. 2 pin and the No. 5 pin of the PJT7838 are respectively connected with the No. 3 pin and the No. 10 pin of the driving chip U1 through resistors R13 and R14, the No. 6 pin of the PJT7838 is connected with the No. 1 pin of the MIC2605YML-TR, and the No. 7 pin and the No. 8 pin of the driving chip U1 are respectively connected with the No. 18 pin and the No. 6 pin of the MCU.
Preferably, the 6 th, 9 th and 11 th pins of the driving chip U1 are grounded to GND, and the 1 st pin is connected to 3.3V.
Preferably, the model of the driving chip U1 is DGD0506AFN-7A.
Preferably, the MCU adopts a chip with the model number of HC32F030F8UA-QN32 TRD.
Preferably, the 6 th to 9 th, 13 th and 30 th pins of the MCU are used as control logic input ports to be respectively connected with the 8 th pin of the 6 driver chips U1, the 18 th to 22 th and 29 th pins are used as enable ports to be connected with the 7 th pin of the 6 driver chips U1, and each driver chip U1 is connected with a corresponding electrode.
Preferably, the 17 th pin of the MCU is connected with a 3.3V power supply.
The working principle is as follows:
the voltage of a 12V power supply VCC is increased to 20V-35V through a booster circuit, the digital potentiometer MCP4014T-503E/OT is connected with the MCU, and the output resistance of the digital potentiometer MCP4014T-503E/OT is controlled by the MCU to achieve the purpose of changing the size of the feedback resistance of the booster circuit and further change the output voltage as the boosting process is a process of converting DC into DC; the MCU controls the on-off of an internal switch chip of the driving circuit through the GPIO port, so that the driving power supply voltage and the electrode are switched on and off according to the control logic of the MCU, the required electrode waveform is achieved, and the effect of massaging the skin is achieved.
The utility model has the advantages that:
1. the utility model can not only enhance the driving current of the double MOS PJT7838 through the driving chip DGD0506AFN-7A, but also avoid the occurrence of the error logic of the double-grid simultaneous conduction through the specific internal circuit design, thereby achieving the purpose of controlling the high voltage by the low voltage;
2. in the utility model, each group of electrodes forms a half-push-pull circuit by PJT7838, and can form an alternating current waveform on the surface of the electrode, thereby achieving the purpose of positive and negative switching of the electrode;
3. compared with the mutual inductance boosting mode in the prior art, the mode of converting DC into DC cannot be adopted in the utility model, the boosting process efficiency of the utility model can reach 87%, the efficiency is high, the heat productivity is less, a large number of PCB boards are avoided, and the overall cost of the circuit is reduced;
4. each electrode has a corresponding control circuit, so that each electrode circuit can be completely independently controlled without mutual interference.
Drawings
FIG. 1 is a circuit diagram of the MCU of the present invention;
fig. 2 is a circuit diagram of the boost circuit of the present invention;
fig. 3 is a circuit diagram of the driving circuit of the present invention;
FIG. 4 is a diagram of a waveform of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1 to 3, the present embodiment provides a control circuit for an electrode of a massage beauty instrument, including an MCU, a boost circuit electrically connected to the MCU, and a plurality of driving circuits, where each of the driving circuits is connected to the boost circuit, and each of the driving circuits is connected to a corresponding electrode, and the boosted voltage supplies power to the driving circuit, and the MCU controls the on/off of the driving circuit according to a corresponding control logic. In this embodiment, the number of the electrodes is 6, and two electrodes are a group.
Preferably, as shown in fig. 2, the boost circuit includes a chip MIC2605YML-TR and a digital potentiometer MCP4014T-503E/OT, a 2 nd pin of the chip MIC2605YML-TR is connected to a 12V input power supply, a 1 st pin of the chip MIC2605YML-TR outputs a boosted voltage VCC and is connected to the driving circuit;
the pins 3, 5 and 8 of the chip MIC2605YML-TR are grounded GND;
the 4 th pin and the 7 th pin of the MIC2605 chip YML-TR are connected;
the 6 th pin of the MIC2605YML-TR chip is connected with the 5 th pin of the digital potentiometer MCP 4014T-503E/OT;
the 3 rd and 4 th pins of the digital potentiometer MCP4014T-503E/OT are respectively connected with the 15 th and 14 th pins of the MCU.
Preferably, as shown in fig. 2, the 1 st pin of the digital potentiometer MCP4014T-503E/OT is connected to the 3.3V power supply, and the 2 nd pin is connected to the ground GND.
Preferably, as shown in fig. 2, the 2 nd pin of the MIC2605YML-TR chip is further connected to a capacitor C16 and a capacitor C17, and the other ends of the capacitor C16 and the capacitor C17 are grounded to GND.
Preferably, as shown in fig. 3, the driving circuit includes a driving chip U1 and a chip PJT7838, wherein a 1 st pin of the chip PJT7838 is connected to the electrode, and 1 st and 3 rd pins of the chip PJT7838 are further connected to 2 nd and 4 th pins of the driving chip U1;
the No. 2 pin and the No. 5 pin of the PJT7838 are connected with the No. 3 pin and the No. 10 pin of the driving chip U1 through resistors R13 and R14 respectively, the No. 6 pin of the PJT7838 is connected with the No. 1 pin of the MIC2605YML-TR, and the No. 7 pin and the No. 8 pin of the driving chip U1 are connected with the No. 18 pin and the No. 6 pin of the MCU respectively.
Preferably, as shown in fig. 3, the 6 th, 9 th and 11 th pins of the driving chip U1 are grounded to GND, and the 1 st pin is connected to 3.3V.
Preferably, as shown in FIG. 3, the driver chip U1 is DGD0506AFN-7A.
Preferably, as shown in fig. 1, the MCU is a chip of type HC32F030F8UA-QN32 TRD.
Preferably, as shown in fig. 1, the pins 6-9, 13, and 30 of the MCU are used as control logic input ports to be respectively connected to the pins 8 of the 6 driver chips U1, the pins 18-22, and 29 are used as enable ports to be connected to the pins 7 of the 6 driver chips U1, and each driver chip U1 is connected to a corresponding electrode. The MCU realizes the control of the frequency and duty cycle of the waveform by controlling IN and EN, as shown IN fig. 4.
Preferably, as shown in fig. 1, the 1 st pin of the MCU is connected in parallel with capacitors C43 and C12, and the other ends of the capacitors C43 and C12 are connected to GND.
Preferably, as shown in fig. 1, the 4 th pin of the MCU is a RESETB pin, and is connected to the resistor R7 and the capacitor C42, wherein one end of the resistor R7 is connected to a voltage of 3.3V, and the other end of the capacitor C42 is connected to GND.
Preferably, as shown in fig. 1, the 4 th pin of the MCU is a pin BOOT0, and is connected to the resistor R8 and the switch KEY1, and the other ends of the resistor R8 and the switch KEY1 are both connected to GND.
Preferably, as shown in fig. 1, the 17 th pin of the MCU is connected to a 3.3V power supply.
The working principle is as follows:
the voltage of a 12V power supply VCC is increased to 20V-35V through a booster circuit, the digital potentiometer MCP4014T-503E/OT is connected with the MCU, and the output resistance of the digital potentiometer MCP4014T-503E/OT is controlled by the MCU to achieve the purpose of changing the size of the feedback resistance of the booster circuit and further change the output voltage as the boosting process is a process of converting DC into DC; the MCU controls the on-off of an internal switch chip of the driving circuit through the GPIO port, so that the driving power supply voltage and the electrode are switched on and off according to the control logic of the MCU, the needed electrode waveform is achieved, and the effect of massaging the skin is achieved.
The foregoing embodiments and description are illustrative of the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims.
Claims (10)
1. The utility model provides a control circuit for massage beauty instrument electrode, its characterized in that, includes MCU and the boost circuit who is connected with MCU electricity and a plurality of drive circuit, every drive circuit all be connected with boost circuit, and every drive circuit be connected with corresponding electrode, the voltage VCC after stepping up gives drive circuit power supply to switch on and cut off according to corresponding control logic control drive circuit and electrode through MCU to the wave form of control electrode.
2. The control circuit for the electrode of the massage cosmetic instrument according to claim 1, characterized in that: the booster circuit comprises a chip MIC2605YML-TR and a digital potentiometer MCP4014T-503E/OT, a 2 nd pin of the chip MIC2605YML-TR is connected with a 12V input power supply, and a 1 st pin of the chip MIC2605YML-TR outputs boosted voltage VCC and is connected with a driving circuit;
the pins 3, 5 and 8 of the chip MIC2605YML-TR are grounded GND;
the 4 th pin and the 7 th pin of the MIC2605 chip YML-TR are connected;
the 6 th pin of the chip MIC2605YML-TR is connected with the 5 th pin of the digital potentiometer MCP 4014T-503E/OT;
the 3 rd and 4 th pins of the digital potentiometer MCP4014T-503E/OT are respectively connected with the 15 th and 14 th pins of the MCU.
3. The control circuit for the electrode of the massage cosmetic instrument according to claim 1, characterized in that: the driving circuit comprises a driving chip U1 and a chip PJT7838, wherein the 1 st pin of the chip PJT7838 is connected with an electrode, and the 1 st and 3 rd pins of the chip PJT7838 are also connected with the 2 nd and 4 th pins of the driving chip U1;
the No. 2 pin and the No. 5 pin of the PJT7838 are connected with the No. 3 pin and the No. 10 pin of the driving chip U1 through resistors R13 and R14 respectively;
the 6 th pin of the chip PJT7838 is connected with the 1 st pin of the chip MIC2605YML-TR, and the chip PJT7838 is supplied with power through boosted voltage VCC;
the 7 th pin and the 8 th pin of the driving chip U1 are respectively connected with the 18 th pin and the 6 th pin of the MCU, and the MCU controls the frequency and the duty ratio of the waveform by controlling IN and EN.
4. The control circuit for the electrode of the massage cosmetic instrument according to claim 2, characterized in that: the 1 st pin of the digital potentiometer MCP4014T-503E/OT is connected with a 3.3V power supply, and the 2 nd pin is connected with the ground GND.
5. The control circuit for the electrode of the massage cosmetic instrument according to claim 2, characterized in that: the No. 2 pin of the chip MIC2605YML-TR is also connected with a capacitor C16 and a capacitor C17, and the other ends of the capacitor C16 and the capacitor C17 are grounded GND.
6. The control circuit for the electrode of the massage beauty instrument according to claim 3, characterized in that: the 6 th, 9 th and 11 th pins of the driving chip U1 are grounded GND, and the 1 st pin is connected with 3.3V voltage.
7. The control circuit for the electrode of the massage beauty instrument according to claim 6, characterized in that: the model of the driving chip U1 is DGD0506AFN-7A.
8. The control circuit for the electrode of the massage cosmetic instrument according to claim 3, characterized in that: the MCU adopts a chip with the model of HC32F030F8UA-QN32 TRD.
9. The control circuit for the electrode of the massage cosmetic instrument according to claim 8, characterized in that: the 6 th to 9 th, 13 th and 30 th pins of the MCU are used as control logic input ports and are respectively connected with the 8 th pin of the 6 driving chips U1;
pins 18-22 and 29 of the MCU are used as enabling ports to be connected with pins 7 of 6 driving chips U1, each driving chip U1 is connected with a corresponding electrode, and the MCU controls the frequency and the duty ratio of waveforms by controlling IN and EN.
10. The control circuit for an electrode of a massage beauty instrument according to claim 9, characterized in that: the 1 st pin of the MCU is connected with capacitors C43 and C12 in parallel, and the other ends of the capacitors C43 and C12 are connected with GND;
the 4 th pin of the MCU is used as a RESETB pin and is connected with a resistor R7 and a capacitor C42, one end of the resistor R7 is connected with 3.3V voltage, and the other end of the capacitor C42 is connected with GND;
and the 4 th pin of the MCU is used as a BOOT0 pin and is connected with the resistor R8 and the switch KEY1, and the other ends of the resistor R8 and the switch KEY1 are connected with GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222830078.9U CN218499020U (en) | 2022-10-26 | 2022-10-26 | Control circuit for electrode of massage beauty instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222830078.9U CN218499020U (en) | 2022-10-26 | 2022-10-26 | Control circuit for electrode of massage beauty instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218499020U true CN218499020U (en) | 2023-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222830078.9U Active CN218499020U (en) | 2022-10-26 | 2022-10-26 | Control circuit for electrode of massage beauty instrument |
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| Country | Link |
|---|---|
| CN (1) | CN218499020U (en) |
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2022
- 2022-10-26 CN CN202222830078.9U patent/CN218499020U/en active Active
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