CN216449908U

CN216449908U - Wireless control's electric toothbrush circuit

Info

Publication number: CN216449908U
Application number: CN202122275691.4U
Authority: CN
Inventors: 李世富; 施志宇; 翁斌
Original assignee: Zhejiang Chaohu Intelligent Technology Co ltd
Current assignee: Zhejiang Chaohu Intelligent Technology Co ltd
Priority date: 2021-09-19
Filing date: 2021-09-19
Publication date: 2022-05-06
Anticipated expiration: 2031-09-19

Abstract

The utility model provides a wireless-controlled electric toothbrush circuit which comprises a wireless control circuit, a power circuit and a motor driving circuit, wherein the wireless control circuit comprises a wireless control chip and an antenna transmitting circuit connected with the wireless control chip, the motor driving circuit is connected with the wireless control chip, the power circuit is used for supplying power, and the motor driving circuit is connected with a brush head of an electric toothbrush. Utilize antenna emission circuit to connect the mobile terminal who is equipped with APP, realize through APP to electric toothbrush's control, make control nimble operatable more.

Description

Wireless control's electric toothbrush circuit

Technical Field

The utility model relates to the technical field of electric toothbrush circuit design, in particular to a wireless control electric toothbrush circuit.

Background

The toothbrush is a tool for cleaning the oral cavity of people and is a necessity of daily life of people. The electric toothbrush is a novel toothbrush, the brush head can generate high-frequency vibration through the rotation or vibration of the motor chip, toothpaste can be rapidly decomposed into fine foam, the fine foam can be conveniently infiltrated into the deep part of the slit between the teeth, and a better cleaning effect can be achieved.

At present, the electric toothbrush is controlled by a plurality of switches arranged on the electric toothbrush body, and the control mode is single.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wireless control electric toothbrush circuit which is used for solving the problem that the existing electric toothbrush is single in control mode.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a wireless-controlled electric toothbrush circuit which comprises a wireless control circuit, a power circuit and a motor driving circuit, wherein the wireless control circuit comprises a wireless control chip and an antenna transmitting circuit connected with the wireless control chip, the motor driving circuit is connected with the wireless control chip, the power circuit is used for supplying power, and the motor driving circuit is connected with a brush head of an electric toothbrush.

Further, the electric toothbrush circuit further comprises a gyroscope circuit, the gyroscope circuit comprises a gyroscope attitude sensor, and the gyroscope attitude sensor is connected with the wireless control chip.

Further, the electric toothbrush circuit further comprises a charging circuit, the charging circuit comprises a charging management chip, and the charging management chip is connected with the wireless control chip.

Further, the power supply circuit comprises a voltage reduction circuit, the voltage reduction circuit comprises a voltage reduction chip, and the voltage reduction chip is connected with the wireless control chip.

Further, the power supply circuit comprises a boost circuit, the boost circuit comprises a direct current boost chip and a switch circuit, and the direct current boost chip is connected with the wireless control chip through the switch circuit.

Furthermore, the switch circuit comprises a triode Q4, the base of the triode Q4 is connected with the wireless control chip through a resistor R9, the emitter is grounded, and the collector is respectively connected with one end of a resistor R10 and the grid of a MOS tube Q3; the source electrode of the MOS transistor Q3 is connected with a power supply, and the drain electrode of the MOS transistor Q3 is respectively connected with one end of a capacitor C6 and one end of an inductor L3; the other end of the capacitor C6 is grounded, the other end of the resistor R10 is grounded, and the other end of the inductor L3 is connected with the direct-current boosting chip.

Furthermore, the electric toothbrush circuit further comprises a voltage detection circuit, the voltage detection circuit comprises a resistor R4, one end of the resistor R4 is connected with a power supply, the other end of the resistor R4 is respectively connected with one end of a resistor R3, one end of a capacitor C1 and the wireless control chip, and the other end of the resistor R3 and the other end of the capacitor C1 are both grounded.

Furthermore, the electric toothbrush circuit also comprises a display circuit, wherein the display circuit comprises a signal receiving circuit, an LED driving chip and an LED matrix circuit which are sequentially connected, and the signal receiving circuit is connected with the wireless control chip.

Further, the wireless control chip is a Bluetooth chip with a model BK 3432.

Further, the antenna transmitting circuit includes an inductor L2, one end of the inductor L2 is connected to the wireless control chip, the other end of the inductor L2 is connected to one end of a capacitor C11, the other end of the capacitor C11 is connected to one end of a capacitor C20, one end of a capacitor C13 and one end of a capacitor C24, the other ends of the capacitor C13 and the capacitor C24 are grounded, and the other end of the capacitor C20 is an antenna signal transmitting end.

The effects provided in the contents of the present invention are only the effects of the embodiments, not all the effects of the present invention, and one of the above technical solutions has the following advantages or advantageous effects:

1. in the wireless control circuit, the antenna transmitting circuit is connected with the mobile terminal provided with the APP, so that the electric toothbrush is controlled through the APP, and the control is more flexible and operable.

2. A gyroscope attitude sensor is added to sense motion parameters, the action of the toothbrush is managed through a wireless control chip, balance is kept, and the toothbrush is more convenient and stable to use.

3. The voltage detection circuit is added, so that the electric quantity of the electric toothbrush can be controlled in real time, and meanwhile, the LED indicating lamps are added, so that the toothbrush state can be accurately known.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the structure of an embodiment of the electric toothbrush circuit of the present invention;

FIG. 2 is a schematic diagram of a circuit structure of the wireless control circuit according to the present invention;

FIG. 3 is a schematic diagram of the circuit structure of the gyroscope circuit of the present invention;

FIG. 4 is a schematic circuit diagram of the charging circuit of the present invention;

FIG. 5 is a schematic diagram of the circuit structure of the voltage step-down circuit of the present invention;

FIG. 6 is a schematic diagram of the circuit structure of the boost circuit of the present invention;

FIG. 7 is a schematic diagram of the circuit structure of the voltage detection circuit according to the present invention;

FIG. 8 is a schematic circuit diagram of a display circuit according to the present invention;

fig. 9 is a schematic circuit diagram of the motor driving circuit according to the present invention.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the utility model.

As shown in fig. 1, the wirelessly controlled electric toothbrush circuit provided by the embodiment of the present invention includes a wireless control circuit, a power circuit and a motor driving circuit, the wireless control circuit includes a wireless control chip and an antenna transmitting circuit connected to the wireless control chip, the motor driving circuit is connected to the wireless control chip, the power circuit is used for supplying power, and the motor driving circuit is connected to a brush head of the electric toothbrush.

Among the wireless control circuit, utilize antenna transmitting circuit to connect the mobile terminal who is equipped with APP, realize through APP to electric toothbrush's control, make control nimble operatable more.

In a specific implementation mode of the embodiment of the utility model, a gyroscope circuit, a display circuit, a voltage detection circuit and a charging circuit are also arranged in the electric toothbrush circuit; the power supply circuit includes a voltage boosting circuit and a voltage dropping circuit.

As shown in fig. 2, the wireless control chip of the wireless control circuit is a bluetooth chip with model number BK 3432.

In the wireless control circuit, signals of peripheral circuits are collected through a Bluetooth chip U3, and corresponding feedback and processing are carried out. And two switch keys SW1 and SW2 are connected with the Bluetooth chip U3. When the switch SW1 is pressed once or repeatedly, the U3 recognizes a level change signal triggered by the switch, starts working and makes corresponding judgment; when the switch SW2 is pressed once or repeatedly, the U3 recognizes a level change signal triggered by the switch, starts working and makes corresponding judgment processing. The corresponding functions of the switch buttons SW1 and SW2 can be set according to requirements, and are not limited herein.

The antenna transmitting circuit in the wireless control circuit comprises an inductor L2, one end of the inductor L2 is connected with the wireless control chip, the other end of the inductor L2 is connected with one end of a capacitor C11, the other end of the capacitor C11 is respectively connected with one ends of a capacitor C20, a capacitor C13 and a capacitor C24, the other ends of the capacitor C13 and the capacitor C24 are grounded, and the other end of the capacitor C20 is an antenna signal transmitting end.

In addition,

pins

1 and 2 of the Bluetooth chip U3 are connected with a charging circuit and used for charging control of the storage battery; the 14 pin is connected with the voltage detection circuit and used for acquiring a detection result of the voltage detection circuit; 27. the 30 pins are connected with a motor driving circuit and used for driving the motor to act; 28. the 29 pin is connected with a display circuit and used for controlling the state of the indicator light; the 31 pin is connected with the booster circuit and used for controlling the action of the booster circuit; 3. and

pins

4 and 12 are connected with the gyroscope circuit, wherein the pin 12 is used for acquiring an input signal of the gyroscope circuit, and the

pins

3 and 4 are used for outputting a control signal to the gyroscope circuit.

As shown in fig. 3, the gyroscope circuit includes a gyroscope attitude sensor U1, model ICM20608(LGA-16), the gyroscope attitude sensor U1 is connected to the wireless control chip U1 through 2, 3 and 6 pins.

As shown in FIG. 4, the charging circuit includes a charging management chip U2, model FM4057(SOT 23-6).

Pins

1 and 5 of the charging management chip U2 are connected with the wireless control chip.

The charging circuit performs charging management control on the lithium battery through the charging management chip U2. The magnitude of the charging current is adjusted through R7. When charging is started, the U2 gives a charging signal CHR, the wireless control circuit makes feedback and judgment by detecting the CHR signal, and the LED of the display circuit is controlled to display the corresponding charging lamp to be on; when the battery is fully charged, the U2 gives a charging signal FULL, the wireless control circuit makes feedback and judgment by detecting the FULL signal, and the LED of the display circuit is controlled to display that the corresponding FULL-charge lamp is on. The charging current can be adjusted through the resistor, and the requirements of products with fast charging or slow charging are met.

As shown in FIG. 5, the buck circuit includes a buck chip U4, model QF7733L50T (SOT-23). The voltage reduction chip U4 is connected with the wireless control chip. The voltage reduction circuit comprises a capacitor C14, a capacitor C17 and a voltage reduction chip U4. In the voltage reduction circuit, the battery voltage is reduced into pulsating 3V direct current voltage through a voltage reduction chip U4, and the pulsating 3V direct current voltage is used for supplying power to a Bluetooth chip U3 of the MCU control circuit.

As shown in fig. 6, the boost circuit includes a dc boost chip U6 and a switch circuit, and the dc boost chip is connected to the wireless control chip through the switch circuit. The model of the direct current boost chip U6 is QF7733L50T (SOT-23).

The switch circuit comprises a triode Q4, the base electrode of the triode Q4 is connected with the wireless control chip through a resistor R9, the emitter electrode is grounded, and the collector electrode is respectively connected with one end of a resistor R10 and the grid electrode of a MOS tube Q3; the source electrode of the MOS transistor Q3 is connected with a power supply, and the drain electrode of the MOS transistor Q3 is respectively connected with one end of a capacitor C6 and one end of an inductor L3; the other end of the capacitor C6 is grounded, the other end of the resistor R10 is grounded, and the other end of the inductor L3 is connected with the direct-current boosting chip.

In the boosting circuit, the battery voltage is boosted to a pulsating 5V direct current voltage through a boosting chip U6 so as to supply power to an LED driving chip U5 of the display circuit. The triode Q4 is used as a front stage switching tube, the MOS tube Q3 is used as a secondary switching tube and is connected with the MCU control circuit, when the MCU control circuit gives out a Vup signal, the level change of the base electrode of the Q4 is controlled, so that the Q4 is turned on/off, and the effect of controlling the turn-on and turn-off of the booster circuit is achieved.

As shown in fig. 7, the electric toothbrush circuit further comprises a voltage detection circuit, the voltage detection circuit comprises a resistor R4, one end of the resistor R4 is connected to the power supply, the other end of the resistor R4 is connected to one end of the resistor R3, one end of the capacitor C1 and the wireless control chip, and the other end of the resistor R3 and the other end of the capacitor C1 are both grounded.

The voltage detection circuit is used for detecting a voltage signal of the battery and comprises a low voltage detection circuit: when the electric quantity of the battery is lower than a set threshold value, the voltage signal is sampled by capturing and is compared with a preset threshold value, and when the voltage signal is lower than the preset threshold value, the wireless control circuit controls the motor driving circuit to stop rotating; the method comprises the following steps of normal detection: and starting up the computer for detection, converting the voltage signal into digital information (available time) by capturing and sampling and converting the digital information with a preset algorithm, and displaying the digital information (available time) by the display circuit.

As shown in fig. 8, the electric toothbrush circuit further comprises a display circuit, the display circuit comprises a signal receiving circuit, an LED driving chip and an LED matrix circuit which are connected in sequence, and the signal receiving circuit is connected with the wireless control chip. The model of the LED driving chip is TM1650 (SOP-16).

The display circuit is defined through IIC bus communication and is connected with the wireless communication circuit. SCL is the data clock input of the 2-wire serial interface, and SDA is the data input output of the 2-wire serial interface. The LED driving circuit is composed of an LED driving chip U5, three resistors R5/R8/R1 and 11 independent LEDs. The LEDs form a matrix circuit, U5 is used as a common anode of the LED lamp, and the LED lamp is turned on and off according to the processing of the wireless control circuit.

As shown in fig. 9, the motor driving circuit includes a motor driving chip U7, a capacitor C18, and a capacitor C19. The motor driving chip U7 is model SA8301S (SOP-8). The C19 is connected with the motor in parallel, and the C19 can enhance the anti-interference performance of the motor in the operation process.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. A wireless control electric toothbrush circuit is characterized by comprising a wireless control circuit, a power circuit and a motor driving circuit, wherein the wireless control circuit comprises a wireless control chip and an antenna transmitting circuit connected with the wireless control chip, the motor driving circuit is connected with the wireless control chip, the power circuit is used for supplying power, and the motor driving circuit is connected with a brush head of an electric toothbrush.

2. The wirelessly controlled power toothbrush circuit of claim 1, further comprising a gyroscope circuit, the gyroscope circuit comprising a gyroscope attitude sensor, the gyroscope attitude sensor coupled to the wireless control chip.

3. The wirelessly controlled power toothbrush circuit of claim 1, further comprising a charging circuit, the charging circuit comprising a charge management chip, the charge management chip coupled to the wireless control chip.

4. The wirelessly controlled power toothbrush circuit of claim 1, wherein the power circuit comprises a voltage step-down circuit, the voltage step-down circuit comprising a voltage step-down chip, the voltage step-down chip coupled to the wireless control chip.

5. The wirelessly controlled power toothbrush circuit of claim 1, wherein the power circuit comprises a boost circuit, the boost circuit comprising a dc boost chip and a switching circuit, the dc boost chip being connected to the wireless control chip via the switching circuit.

6. The wireless-controlled electric toothbrush circuit according to claim 5, wherein the switch circuit comprises a transistor Q4, the base of the transistor Q4 is connected to the wireless control chip through a resistor R9, the emitter is grounded, and the collector is respectively connected to one end of a resistor R10 and the gate of a MOS transistor Q3; the source electrode of the MOS transistor Q3 is connected with a power supply, and the drain electrode of the MOS transistor Q3 is respectively connected with one end of a capacitor C6 and one end of an inductor L3; the other end of the capacitor C6 is grounded, the other end of the resistor R10 is grounded, and the other end of the inductor L3 is connected with the direct-current boosting chip.

7. The wireless controlled electric toothbrush circuit according to claim 1, further comprising a voltage detection circuit, wherein the voltage detection circuit comprises a resistor R4, one end of the resistor R4 is connected to a power supply, the other end of the resistor R4 is connected to one end of a resistor R3, one end of a capacitor C1 and the wireless control chip, and the other end of the resistor R3 and the other end of the capacitor C1 are grounded.

8. The wirelessly controlled electric toothbrush circuit according to claim 1, further comprising a display circuit, wherein the display circuit comprises a signal receiving circuit, an LED driving chip and an LED matrix circuit, which are connected in sequence, and the signal receiving circuit is connected to the wireless control chip.

9. The wirelessly controlled electric toothbrush circuit according to any one of claims 1 to 8, wherein the wireless control chip is a Bluetooth chip having a model number BK 3432.

10. The wireless controlled electric toothbrush circuit according to any one of claims 1 to 8, wherein the antenna transmitting circuit comprises an inductor L2, one end of the inductor L2 is connected to the wireless control chip, the other end of the inductor L2 is connected to one end of a capacitor C11, the other end of the capacitor C11 is connected to one end of a capacitor C20, a capacitor C13 and a capacitor C24 respectively, the other ends of the capacitor C13 and the capacitor C24 are grounded, and the other end of the capacitor C20 is an antenna signal transmitting end.