Control circuit of LED vibration brush

Abstract

The utility model aims to provide the control circuit of the LED vibration brush, which has a simple structure and can simultaneously enable the banister brush to vibrate and emit light. The LED lamp comprises a power supply part and a control part, the control part comprises an MCU (1), a button (2), an LED driving module (3) and a motor driving module (4), the MCU (1) receives start-stop signals of the button (2) and sends driving signals to the LED driving module (3) and the motor driving module (4), the LED driving module (3) is connected with a plurality of LED lamps (5), and the motor driving module (4) is connected with the LED lamps (5). The motor driving module (4) is connected with a motor (6), and the power supply part respectively supplies power to the MCU (1), the LED driving module (3), the motor driving module (4), the LED lamp (5) and the motor (6). The circuit can be applied to the technical field of circuit control.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit control, in particular to a control circuit of an LED vibration brush. Background Art

[0002] Soft brushes can be used for bathing or facial cleansing and can clean the skin surface thoroughly. With the improvement of people's living standards and the development level of science and technology, people's additional demands for soft brushes have also changed. For example, adding a vibration function to the soft brush can make the soft brush have a better cleaning effect and form a certain massage effect on the skin surface. In addition, designing the soft brush more diversely can bring more fun to people. For example, designing the soft brush into a style with a lighting effect. In view of this, the utility model designs a control scheme with both vibration and lighting functions for the control circuit of the soft brush to meet the above new requirements for the soft brush. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a control circuit of an LED vibration brush with a simple structure that can make the soft brush vibrate and emit light simultaneously.

[0004] The technical solution adopted by the utility model is that the utility model includes a power supply part and a control part. The control part includes an MCU, a key, an LED driving module, and a motor driving module. The MCU receives the start / stop signal of the key and sends driving signals to the LED driving module and the motor driving module respectively. The LED driving module is connected with a plurality of LED lights, and the motor driving module is connected with a motor. The power supply part supplies power to the MCU, the LED driving module, the motor driving module, the LED lights, and the motor respectively.

[0005] As can be seen from the above solution, the utility model combines the power supply part and the control part into an integral whole, realizes the separate control of the LED and the motor through the control part, uses the LED driving module to realize the lighting of the soft brush, uses the motor driving module to realize the control of the motor, and realizes the vibration of the soft brush through the vibration of the motor, which brings more fun to people. At the same time, the vibration makes the soft brush have a better cleaning effect when in use. In addition, the utility model has a simple structure, is easy to implement, and has a relatively low cost.

[0006] Further, the power supply section includes a switch circuit connected to the button, a rechargeable battery, a wireless charging module, a 5V DC-DC module, and a 3V DC-DC module. The button is connected to the switch circuit. The wireless charging module is connected to the rechargeable battery. The rechargeable battery is connected to the 5V DC-DC module. The 5V DC-DC module is connected to the 3V DC-DC module. The 3V DC-DC module supplies power to the LED driving module and the motor driving module. The 5V DC-DC module supplies power to the MCU.

[0007] Thus, the switch circuit is used to wake up, start, continuously supply power, and stop the circuit. The rechargeable battery can provide an external power supply for the circuit. The wireless charging module realizes wireless charging. The 5V DC-DC module and the 3V DC-DC module respectively realize the output of 5V and 3V power supplies to supply power to the MCU, LED, and motor, ensuring the continuous operation of the entire circuit.

[0008] The MCU is a single-chip microcomputer. Using a single-chip microcomputer as the MCU and leveraging the mature functions of the single-chip microcomputer ensure the stability and reliability of the circuit and achieve low-cost implementation.

[0009] The LED driving module is selected from an LED driving chip of model TM1628A. Here, using TM1628A as the LED driving chip and leveraging the performance reliability of the TM1628A chip ensure the reliability and stability of the LED.

[0010] In addition, the motor driving module includes a first field-effect transistor and a voltage stabilizing circuit composed of a low-voltage step-down DC-DC and a DC inductor. Thus, the first field-effect transistor realizes the on-off of the circuit. The low-voltage step-down DC-DC realizes the voltage stabilizing function. The DC inductor stores energy when the field-effect transistor is conducting and supplies power to the load when the field-effect transistor is off, ensuring the stable and reliable operation of the circuit.

[0011] Further, the switch circuit is composed of a Schottky diode and a second field-effect transistor. The second field-effect transistor realizes the on-off of the power supply. The battery is connected through the Schottky diode to supply power to the circuit. The second field-effect transistor enables the power supply to continuously supply power to the circuit.

[0012] The wireless charging module is composed of a wireless charging receiving chip and a charging management IC. Wireless charging is realized through the wireless charging receiving chip. The charging management IC is connected to the MCU to realize the management of wireless charging.

[0013] The 5V DC-DC module and the 3V DC-DC module control the voltage output by a DC-DC power chip. Thus, controlling the voltage output by the power chip ensures the stability and reliability of the circuit.

[0014] The button is connected to the MCU through a connection interface. The setting of the connection interface facilitates the access of the button. At the same time, through the connection interface, the reliability and stability of signal transmission are guaranteed to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a simplified structural block diagram of the present invention;

[0016] Figure 2 is a simplified circuit schematic diagram of the MCU and the button;

[0017] Figure 3 is a simplified circuit schematic diagram of the 5V DC-DC module;

[0018] Figure 4 is a simplified circuit schematic diagram of the switch circuit;

[0019] Figure 5 is a simplified circuit schematic diagram of the motor drive module;

[0020] Figure 6 is a simplified circuit schematic diagram of the wireless charging module;

[0021] Figure 7 is a simplified circuit schematic diagram of the LED drive module;

[0022] Figure 8 is a simplified circuit schematic diagram of the LED. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] As Figures 1 to 8 shown, the present invention includes a power supply part and a control part. The control part includes an MCU 1, a button 2, an LED drive module 3, and a motor drive module 4. The MCU 1 receives the start / stop signal of the button 2 and sends drive signals to the LED drive module 3 and the motor drive module 4 respectively. The LED drive module 3 is connected to a plurality of LED lights 5, and the motor drive module 4 is connected to a motor 6. The power supply part supplies power to the MCU 1, the LED drive module 3, the motor drive module 4, the LED lights 5, and the motor 6 respectively.

[0024] The power supply part includes a switch circuit 7 connected to the button 2, a rechargeable battery BAT, a wireless charging module 8, a 5V DC-DC module 9, and a 3V DC-DC module 10. The button 2 is connected to the switch circuit 7. The wireless charging module 8 is connected to the rechargeable battery BAT. The rechargeable battery BAT is connected to the 5V DC-DC module 9. The 5V DC-DC module 9 is connected to the 3V DC-DC module 10. The 3V DC-DC module 10 supplies power to the LED driving module 3 and the motor driving module 4. The 5V DC-DC module 9 supplies power to the MCU 1.

[0025] Specifically, the MCU 1 is a single-chip microcomputer U7. The LED driving module 3 is selected from an LED driving chip U8 of model TM1628A. The motor driving module 4 includes a first field-effect transistor Q1 and a voltage stabilizing circuit composed of a low-voltage step-down DC-DC U4 and a DC inductor L3.

[0026] The switch circuit 7 is composed of a Schottky diode D34 and a second field-effect transistor Q2. The second field-effect transistor Q2 realizes the on / off of power supply. The wireless charging module 8 is composed of a wireless charging receiving chip U6 and a charging management IC U2. The 5V DC-DC module 9 and the 3V DC-DC module 10 control the voltage output by a DC-DC power chip U3. The button 2 is connected to the MCU 1 through connection interfaces J2 and J5.

[0027] In the present utility model, when the button key is pressed, the Schottky diode D34 conducts, the second field-effect transistor Q2 conducts, and the battery BAT supplies power. After the button is pressed, the +DC5V pin receives a charging signal to wake up the circuit. The single-chip microcomputer continuously outputs a high-level signal to the ONOFF / PWR pin to keep the second field-effect transistor Q2 continuously conducting and ensure continuous power supply.

[0028] During wireless charging, after receiving a wireless charging signal, the wireless charging receiving chip U6 works, and the charging management IC U2 manages the battery charging. At the same time, the CHRG pin and the SRDBY pin are connected to the single-chip microcomputer. In the switch K4, the charging status is distinguished by the color lamp RGB.

[0029] In addition, when the button is pressed, the switch circuit works and the machine is turned on; the DC-DC5V pin and the DC-DC3V pin supply power. The MCU sends a signal to the LED driving module, and the LED driving module controls the LED lamp to light up; the MCU sends a signal to the motor driving module, and the motor vibrates; when the RGB lamp on the button turns red, it means that the battery power is insufficient, and the charging mode is turned on.

[0030] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A control circuit for an LED vibrating brush, characterized in that, The control circuit includes a power supply part and a control part. The control part includes an MCU (1), a button (2), an LED driving module (3), and a motor driving module (4). The MCU (1) receives the start / stop signal of the button (2) and sends driving signals to the LED driving module (3) and the motor driving module (4) respectively. The LED driving module (3) is connected with a plurality of LED lights (5), and the motor driving module (4) is connected with a motor (6). The power supply part supplies power to the MCU (1), the LED driving module (3), the motor driving module (4), the LED lights (5), and the motor (6) respectively. The power supply part includes a switch circuit (7) connected to the button (2), a rechargeable battery (BAT), a wireless charging module (8), a 5V DC-DC module (9), and a 3V DC-DC module (10). The button (2) is connected to the switch circuit (7), the wireless charging module (8) is connected to the rechargeable battery (BAT), the rechargeable battery (BAT) is connected to the 5V DC-DC module (9), the 5V DC-DC module (9) is connected to the 3V DC-DC module (10), the 3V DC-DC module (10) supplies power to the LED driving module (3) and the motor driving module (4), and the 5V DC-DC module (9) supplies power to the MCU (1).

2. The control circuit of an LED vibration brush according to claim 1, characterized in that, The MCU (1) is a single-chip microcomputer (U7).

3. The control circuit of an LED vibration brush according to claim 1, wherein The LED driving module (3) is selected from an LED driving chip (U8) of model TM1628A.

4. The control circuit of an LED vibration brush according to claim 1, characterized in that, The motor driving module (4) includes a first field-effect transistor (Q1) and a voltage stabilizing circuit composed of a low-voltage step-down DC-DC (U4) and a DC inductor (L3).

5. The control circuit of an LED vibration brush according to claim 1, characterized in that The switch circuit (7) is composed of a Schottky diode (D34) and a second field-effect transistor (Q2), and the second field-effect transistor (Q2) realizes the on / off of power supply.

6. The control circuit of an LED vibration brush according to claim 1, characterized in that, The wireless charging module (8) is composed of a wireless charging receiving chip (U6) and a charging management IC (U2).

7. The control circuit of an LED vibrating brush according to claim 1, wherein, The 5V DC-DC module (9) and the 3V DC-DC module (10) control the voltage output by a DC-DC power chip (U3).

8. The control circuit of an LED vibration brush according to claim 1, characterized in that, The button (2) is connected to the MCU (1) through connection interfaces (J2, J5).

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