CN110840610A

CN110840610A - Electric tooth brush

Info

Publication number: CN110840610A
Application number: CN201911096696.1A
Authority: CN
Inventors: 田岐保
Original assignee: Emask Shenzhen Technology Co ltd
Current assignee: Emask Shenzhen Technology Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-02-28
Anticipated expiration: 2039-11-11
Also published as: CN110840610B

Abstract

The present application provides an electric toothbrush comprising: the battery supplies power for the control circuit, the double-display-screen circuit, the sensor circuit and the motor driving circuit through the power supply circuit, the sensor circuit is used for detecting the state of the electric toothbrush, when the sensor circuit monitors that the electric toothbrush is changed from a static state to an active state, the sensor circuit sends out a sensing signal to the control circuit, the control circuit controls the double-display-screen circuit to drive the first display screen and the second display screen to display pictures according to the sensing signal, and the control circuit also controls the motor driving circuit to drive the motor to work according to the sensing signal. The electric toothbrush disclosed by the application can realize complex control functions such as displaying a picture, detecting the activity state of the electric toothbrush and automatically starting.

Description

Electric tooth brush

Technical Field

The application relates to the field of electric toothbrush circuit control, in particular to an electric toothbrush.

Background

The toothbrush is a necessary daily article in daily life. The advent of electric toothbrushes has brought some convenience to people's washing, but conventional electric toothbrushes have used only a motor to vibrate the electric toothbrush, thereby brushing their teeth. Therefore, the driven electric toothbrush only has the function of brushing teeth, and cannot realize other complex control functions.

Disclosure of Invention

The electric toothbrush disclosed by the application can realize complex control functions such as displaying a picture, detecting the activity state of the electric toothbrush and automatically starting.

The present application provides an electric toothbrush comprising: battery, supply circuit, control circuit, two display screen circuits, sensor circuit, motor drive circuit, motor, first display screen, and second display screen, the battery passes through supply circuit does control circuit two display screen circuits sensor circuit reaches the motor drive circuit power supply, sensor circuit is used for detecting electric toothbrush's state is worked as sensor circuit monitors electric toothbrush becomes when active state from the quiescent condition, sensor circuit is to control circuit sends sensing signal, control circuit basis sensing signal control two display screen circuit drives first display screen, and second display screen display picture, just control circuit still basis sensing signal control motor drive circuit drives the motor work.

When the user brushes his/her teeth with the electric toothbrush, the user only needs to pick up the electric toothbrush, the sensor circuit detects that the state of the electric toothbrush is changed to the active state, and sends the sensing signal to the control circuit. The control circuit controls the double-display-screen circuit to drive the first display screen and the second display screen to display pictures according to the sensing signal. During the process of tooth brushing, the user can observe the picture of the first display screen or the second display screen to obtain required information. The control circuit controls the motor driving circuit to drive the motor to work, so that the electric toothbrush can be automatically controlled to work, and convenience is provided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any inventive exercise.

FIG. 1 is a schematic view of a powered toothbrush frame provided in accordance with a first embodiment of the present application.

Fig. 2 is a schematic view of an electric toothbrush provided in a first embodiment of the present application.

Fig. 3 is a schematic diagram of a control circuit according to a first embodiment of the present application.

Fig. 4 is a schematic diagram of a dual-display circuit according to a first embodiment of the present disclosure.

Fig. 5 is a schematic diagram of a sensor circuit according to a first embodiment of the present application.

Fig. 6 is a schematic diagram of a motor driving circuit according to a first embodiment of the present disclosure.

Fig. 7 is a schematic diagram of a flash memory circuit according to a first embodiment of the present disclosure.

Fig. 8 is a schematic diagram of a state display circuit according to a first embodiment of the present application.

Fig. 9 is a schematic diagram of a power supply circuit according to a first embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1 and 2 together, fig. 1 is a schematic view of a frame of an electric toothbrush 1 according to a first embodiment of the present application; fig. 2 is a schematic view of an electric toothbrush 1 according to a first embodiment of the present application. Specifically, the electric toothbrush 1 includes: a battery 10, a power supply circuit 20, a control circuit 30, a dual display circuit 40, a sensor circuit 50, a motor driving circuit 60, a motor 3, a first display 70a, and a second display 70b, the battery 10 supplies power to the control circuit 30, the dual display circuit 40, the sensor circuit 50, and the motor driving circuit 60 through the power supply circuit 20, the sensor circuit 50 is used to detect the state of the electric toothbrush 1, when the sensor circuit 50 monitors that the electric toothbrush 1 changes from a rest state to an active state, the sensor circuit 50 sends a sensing signal to the control circuit 30, the control circuit 30 controls the dual-display circuit 40 to drive the first display 70a and the second display 70b to display images according to the sensing signal, and the control circuit 30 also controls the motor driving circuit 60 to drive the motor 3 to work according to the sensing signal.

Specifically, as shown in fig. 2, the first display 70a is located on one side of the electric toothbrush 1, and the second display 70b is located on the other side of the electric toothbrush 1. The image displayed by the first display screen 70a and the image displayed by the second display screen 70b are in mirror image relationship. The user can view the picture through the first display 70a on the side facing the user while brushing their teeth, and can view the picture through the second display 70b reflected by the mirror.

Specifically, the control circuit 30 sends different electrical signals to control the dual-display circuit 40, and the dual-display circuit 40 can drive the first display 70a and the second display 70b to display different images. For example, the first display screen 70a and the second display screen 70b may display the current time, and the user can conveniently and directly know the current time. Alternatively, the first display 70a and the second display 70b can display screens showing the knowledge related to tooth brushing, so that the user can brush teeth correctly according to the knowledge.

Specifically, as shown in fig. 2, the electric toothbrush 1 further includes a brush head 2, and the control circuit 30 controls the motor driving circuit 60 to drive the motor 3 to vibrate according to the sensing signal sent by the sensor circuit 50, so as to drive the brush head 2 to vibrate, and thus the electric toothbrush 1 works.

It is to be understood that, in the present embodiment, when the user brushes the teeth using the electric toothbrush 1, the user only needs to pick up the electric toothbrush 1, the sensor circuit 50 detects that the state of the electric toothbrush 1 is changed to the active state, and sends the sensing signal to the control circuit 30. The control circuit 30 controls the dual-display circuit 40 to drive the first display 70a and the second display 70b to display images according to the sensing signal. During the tooth brushing process, the user can observe the screen of the first display screen 70a or the second display screen 70b to obtain the required information. The control circuit 30 controls the motor driving circuit 60 to drive the motor 3 to work, so that the electric toothbrush 1 is automatically controlled to work, and convenience is provided.

In one possible implementation, please refer to fig. 3, and fig. 3 is a schematic diagram of a control circuit 30 according to a first implementation of the present application. The control circuit 30 includes: a central processing chip 310, and peripheral circuitry 320. The central processing chip 310 has a plurality of pins. The peripheral circuit 320 is electrically connected to a plurality of pins of the central processing chip 310. The peripheral circuit 320 sends out a periodic electrical signal to the central processing chip 310 to operate the central processing chip 310. When the cpu 310 is working, the dual-display circuit 40 is controlled to drive the first display 70a and the second display 70b to display images, and the motor driving circuit 60 is controlled to drive the motor 3 to work.

Specifically, the connection manner of the electronic device is as shown in fig. 3, and the reference numerals corresponding to the same letters and numbers represent that the electronic device is electrically connected to the same node, which will not be described in detail below. Wherein the VCC node represents an electrical connection node of the battery 10, the VDD nRF node represents an electrical connection node for supplying power to the central processing chip 310, and nodes electrically connected to the plurality of pins of the central processing chip 310 are also electrically connected to the dual display circuit 40, the sensor circuit 50, and the motor driving circuit 60, which will be described in detail below.

Next, the operation of the central processing chip 310 will be briefly described.

Specifically, one end of the crystal oscillator X1 is electrically connected to one end of the capacitor C5, and is electrically connected to the a23 pin of the cpu 310. The other end of the crystal oscillator X1 is electrically connected to one end of the capacitor C9 and to the B24 pin of the cpu 310. The capacitor C5 is electrically connected to the other end of the capacitor C9 and is grounded. The crystal oscillator X1, the capacitor C5, and the capacitor C9 constitute an oscillation circuit with a constant oscillation frequency, and provide a periodic electrical signal to the central processing chip 310, so that the central processing chip 310 operates.

Specifically, one end of the crystal oscillator X2 is electrically connected to one end of the capacitor C10, and is electrically connected to the D2 pin of the cpu 310. The other end of the crystal oscillator X2 is electrically connected to one end of the capacitor C16 and to the F2 pin of the cpu 310. The capacitor C10 is electrically connected to the other end of the capacitor C16 and is grounded. The crystal oscillator X2, the capacitor C10 and the capacitor C16 constitute an oscillation circuit with an oscillation frequency different from that of the crystal oscillator X1, the capacitor C5 and the capacitor C9, and provide another periodic electrical signal for the central processing chip 310.

Specifically, the oscillation circuit composed of the crystal oscillator X1, the capacitor C5 and the capacitor C9 can provide a more accurate periodic electrical signal for the central processing chip 310 than the oscillation circuit composed of the crystal oscillator X2, the capacitor C10 and the capacitor C16, and the oscillation circuit composed of the crystal oscillator X2, the capacitor C10 and the capacitor C16 has lower power consumption. Therefore, the central processing chip 310 can select the corresponding oscillation circuit according to the actual situation through an algorithm. For example, when the central processing chip 310 detects that the remaining capacity of the battery 10 is less than a preset threshold, the central processing chip 310 selects an oscillation circuit composed of a crystal oscillator X2, a capacitor C10 and a capacitor C16 with lower power consumption.

Specifically, as shown in fig. 3, the peripheral circuit 320 further includes an initialization circuit 321, where the initialization circuit 321 includes: hall switch 322, resistor R21, and capacitor C33. The pin 1 of the hall switch 322 is electrically connected to one end of the resistor R21 and to the VCC node. Pin 2 of the hall switch 322 is grounded. The pin 3 of the hall switch 322 is electrically connected to the other end of the resistor R21 and to the P0.18/RESET pin of the cpu 310. One end of the capacitor C33 is electrically connected to the node where the Hall switch 322 is electrically connected to the P0.18/RESET pin of the CPU chip 310, and the other end of the capacitor C33 is grounded. When the hall switch 322 receives a pressure signal, the hall switch 322 turns on the circuit of the VCC node and the P0.18/RESET pin of the central processing chip 310 due to the hall effect, so that the central processing chip 310 is initialized. The resistor R21 is a current limiting resistor to prevent the central processing chip 310 from being damaged by excessive current flowing into the central processing chip 310. The capacitor C33 is an energy storage capacitor, and when the hall switch 322 is turned on, the capacitor C33 charges to provide a stable voltage to the P0.18/RESET pin of the cpu 310.

Specifically, when the central processing chip 310 works, the central processing chip 310 controls the dual-display circuit 40 to drive the first display 70a and the second display 70b to display images and controls the motor driving circuit 60 to drive the motor 3 to work through pins electrically connected to the dual-display circuit 40 and the motor driving circuit 60 correspondingly.

It can be understood that, in the present embodiment, the central processing chip 310 selects the low power consumption oscillating circuit to save power through the adjustment of the algorithm when the battery 10 is low, so that the user cannot continue brushing teeth due to the exhaustion of the battery 10 during brushing teeth. When the electric toothbrush 1 has a program failure, the user may initialize the central processing chip 310 through the initialization circuit 321 in an attempt to repair the electric toothbrush 1.

In one possible implementation, please refer to fig. 4, in which fig. 4 is a schematic diagram of a dual-display circuit 40 according to a first embodiment of the present disclosure. The dual display panel circuit 40 includes a first fet 410, a first display driver chip 420a, a second display driver chip 420b, and a power chip 430. The first fet 410 is electrically connected to the cpu 310 to be turned on or off under the control of the cpu 310. When the first fet 410 is turned on under the control of the cpu 310, the first display driver chip 420a and the second display driver chip 420b receive the power supplied from the battery 10 through the power chip 430. The plurality of pins of the first display driver chip 420a and the second display driver chip 420b are electrically connected to the plurality of pins of the central processing chip 310. When the first display driver chip 420a and the second display driver chip 420b receive the electric energy provided by the battery 10 through the power chip 430, the first display driver chip 420a and the second display driver chip 420b receive the first driving signal and the second driving signal sent by the central processing chip 310. The first display driving chip 420a drives the first display screen 70a to display the first image under the control of the first driving signal. The second display driving chip 420b drives the second display screen 70b to display a second image under the control of a second driving signal.

Specifically, when the sensor circuit 50 monitors that the electric toothbrush 1 changes from a static state to an active state, the sensor circuit 50 sends the sensing signal to the central processing chip 310, and the central processing chip 310 controls the first fet 410 to be turned on according to the sensing signal.

Specifically, as shown in fig. 4, the resistor R1 and the resistor R2 are current limiting resistors of the first display driver chip 420a and the second display driver chip 420b, respectively, so as to prevent the first display driver chip 420a and the second display driver chip 420b from being damaged by excessive current in the circuit. When the first display driver chip 420a and the second display driver chip 420b receive the electric energy provided by the battery 10 through the power chip 430, the first display driver chip 420a and the second display driver chip 420b receive the first driving signal and the second driving signal sent by the central processing chip 310. The first display driver chip 420a and the second display driver chip 420b decode the first driving signal and the second driving signal, respectively, and output the decoded signals to the first display screen 70a and the second display screen 70b, respectively, to display the first picture and the second picture.

Specifically, in this embodiment, the first screen and the second screen may be mirror images as described above, so that the second screen viewed by the user through a mirror during brushing teeth is the same as the first screen. It will be appreciated that in one possible implementation, the first screen and the second screen may display different content.

Specifically, the capacitor C19, the capacitor C21, and the capacitor C26 are energy storage capacitors for providing a stable output voltage. The inductor L9 is an energy storage inductor for storing the current flowing through the inductor L9 in the form of electromagnetic energy. The resistor R11, the resistor R8 and the resistor R9 are current limiting resistors. The inductor L4 and the capacitor C40 form a resonant circuit, which can pass current signals of specific frequency and block useless current signals of other frequencies.

It can be understood that, in the present embodiment, the central processing chip 310 controls the first display driving chip 420a and the second display driving chip 420b to drive the first display 70a and the second display 70b to display the first image and the second image according to the sensing signal. During the process of tooth brushing, the user can observe the first picture and the second picture to obtain required information.

In a possible embodiment, the central processing chip 310 detects the remaining capacity of the battery 10, and when the remaining capacity of the battery 10 is smaller than a preset threshold, the central processing chip 310 controls the power chip 430 to turn off through the first fet 410.

Specifically, when the remaining power of the battery 10 detected by the central processing chip 310 is smaller than the preset threshold, the central processing chip 310 controls the first field effect transistor 410 to be turned off, so that the current provided by the battery 10 to the power chip 430 is cut off, and the first display driving chip 420a and the second display driving chip 420b are turned off, so that no display image is displayed on the first display screen 70a and the second display screen 70 b.

It can be understood that, in the present embodiment, when the remaining power of the battery 10 is less than the preset threshold, the first fet 410 should be turned off by the cpu 310 in time, so that the electric toothbrush 1 operates at a lower power consumption, thereby saving the power of the battery 10, and the user cannot continue brushing teeth due to the exhaustion of the power of the battery 10.

In one possible implementation, please refer to fig. 5, and fig. 5 is a schematic diagram of a sensor circuit 50 according to a first implementation of the present application. The sensor circuit 50 includes: a second fet 510, and a sensor chip 520. The second fet 510 is electrically connected to the central processing chip 310 to operate under the control of the central processing chip 310. The plurality of pins of the sensor chip 520 are electrically connected with the plurality of pins of the central processing chip 310. When the electric toothbrush 1 changes from a static state to an active state, the sensor chip 520 detects the acceleration of the electric toothbrush 1 and sends the sensing signal to the central processing chip 310.

Specifically, in the present embodiment, the sensor chip 520 incorporates a six-axis gyroscope 521. When the electric toothbrush 1 changes from a static state to an active state, the six-axis gyroscope 521 can monitor the acceleration of the electric toothbrush 1 and generate a change in current. The sensor chip 520 sends the generated current change to the central processing chip 310 in the form of the sensing signal.

Specifically, the capacitor C35, the capacitor C36, the capacitor C37 and the capacitor C38 are energy storage capacitors and are used for providing stable voltage output. The resistor R24, the resistor R25 and the resistor R27 are current limiting resistors, and damage to the sensor chip 520 caused by excessive current is prevented.

As can be appreciated, the sensor chip 520 eliminates the conventional key control, and sends a sensing signal to the central processing chip 310 by monitoring the activity status of the electric toothbrush 1, so as to automatically control the operation of the electric toothbrush 1.

In one possible implementation, please refer to fig. 6 together, and fig. 6 is a schematic diagram of a motor driving circuit 60 according to a first implementation of the present application. The motor driving circuit 60 is electrically connected to a plurality of pins of the central processing chip 310. The motor driving circuit 60 receives the pwm signal from the cpu 310 to control the motor 3 to operate in different operation modes. Wherein the operating modes include: high speed, medium speed, low speed.

Specifically, M +, and M-are positive and negative electrodes connected to the motor 3. The pulse width modulation signal is a control signal. The pulse width modulated signal has parameters of frequency, width, and duty cycle. The central processing chip 310 can control the motor 3 to operate in different operating modes through the pwm signal. The frequency of the pulse width modulation signal controls the frequency at which the motor 3 vibrates, the width of the pulse width modulation signal controls the duration of the motor 3 vibration, and the duty cycle of the pulse width modulation signal controls the intensity of the motor 3 vibration.

It is understood that in the present embodiment, different users have different use feelings when using the electric toothbrush 1. The adjustable working mode enables different users to obtain good use experience. Meanwhile, the user can adjust the working mode through the central processing chip 310 according to actual conditions.

Specifically, in one possible implementation, the central processing chip 310 detects the remaining capacity of the battery 10. When the remaining capacity of the battery 10 is less than the preset threshold, the frequency, the width, and the duty ratio of the pwm signal received by the motor driving circuit 60 from the cpu 310 are decreased, so that the motor driving circuit 60 drives the motor 3 to operate with relatively low power. It will be appreciated that operating the motor 3 with relatively little power conserves the battery 10 so that the user does not become unable to continue brushing because the battery 10 is depleted while brushing teeth.

In one possible implementation, please refer to fig. 7, and fig. 7 is a schematic diagram of a flash memory circuit 80 according to a first implementation of the present application. The electric toothbrush 1 further comprises a flash memory circuit 80, and the flash memory circuit 80 is electrically connected to the plurality of pins of the central processing chip 310. When the time that the electric toothbrush 1 becomes still from the activity exceeds the preset time, the flash memory circuit 80 receives the saving signal sent by the central processing chip 310, and the flash memory circuit 80 saves the working mode. When the electric toothbrush 1 changes from rest to active, the flash memory chip sends the save signal to the central processing chip 310, so that the central processing chip 310 controls the motor 3 to operate in the previous operating mode through the motor driving circuit 60.

Specifically, the flash memory circuit 80 has a plurality of fets 810, and the fets 810 are electrically connected to the cpu 310. When the flash memory circuit 80 receives the saving signal sent by the central processing chip 310, the corresponding field effect transistors 810 in the flash memory circuit 80 store charges, the field effect transistors 810 are turned on, and the read data is 0; the corresponding field effect transistors 810 in the flash memory circuit 80 erase charges, the field effect transistors 810 are turned off, and the read data is 1. The plurality of field effect transistors 810 store and erase charges to achieve a data storage function. The flash memory circuit 80 further includes a capacitor C39, and the capacitor C39 is an energy storage capacitor, and provides a stable voltage output for the flash memory circuit 80.

In one possible implementation, please refer to fig. 8, and fig. 8 is a schematic diagram of a status display circuit 90 according to a first implementation of the present application. The electric toothbrush 1 further comprises a status display circuit 90, the status display circuit 90 comprising a plurality of LED circuits. The positive pole of the single LED is electrically connected with the battery 10, and the negative pole of the single LED is electrically connected with the pin of the central processing chip 310. The central processing chip 310 obtains the current status of the electric toothbrush 1, and controls the corresponding LED to go off or light up, so as to display the status of the electric toothbrush 1.

Specifically, the resistor R26, the resistor R28, the resistor R29, the resistor R30, the resistor R31, the resistor R34, the resistor R35, the resistor R36, and the resistor R37 are current-limiting resistors. The central processing chip 310 obtains the current status of the electric toothbrush 1, and sends out a high level or a low level through a pin electrically connected to the corresponding LED circuit to control the LED to be turned off or turned on. It will be appreciated that in this embodiment, the status display circuit 90 enables the user to more intuitively observe the status of the electric toothbrush 1.

In a possible implementation manner, please refer to fig. 9 together, and fig. 9 is a schematic diagram of a power supply circuit 20 according to a first implementation manner of the present application. The power supply circuit 20 includes: the charging circuit comprises a voltage stabilizing circuit 210, a boosting circuit 220 and a wireless charging circuit 230, wherein the voltage stabilizing circuit 210 is electrically connected with the battery 10, the voltage stabilizing circuit 210 is used for stabilizing the output voltage of the battery 10, the boosting circuit 220 is provided with a coil input end L5, the boosting circuit 220 is electrically connected with an external power supply for charging, the boosting circuit 220 is used for boosting the charging voltage of the external power supply, the wireless charging circuit 230 is provided with a coil output end L1, the coil output end L1 is opposite to the coil input end L5 so as to receive the charging current of the coil input end L5 through electromagnetic induction, and the coil output end L1 is electrically connected with the battery 10 so as to charge the battery 10.

Specifically, as shown in fig. 9, BAT +, and BAT-correspond to the positive electrode and the negative electrode of the battery 10, respectively. The diode D1 prevents a reverse current from flowing into the battery 10, thereby damaging the battery 10. The resistor R3 and the resistor R4 are shunt resistors. The capacitor C1, the capacitor C2 and the capacitor E1 are energy storage capacitors and are used for providing stable voltage output. The voltage regulator circuit 210 further has a voltage regulator transistor 211 for stabilizing the voltage output of the battery 10.

Specifically, as shown in fig. 9, the voltage boost circuit 220 further includes a voltage boost chip 221, and the voltage boost chip 221 is configured to amplify a voltage. The resistor R20 is a current limiting resistor, and the resistor R22 and the resistor R23 are shunt resistors. The capacitor C41, the capacitor C42 and the capacitor C43 are energy storage capacitors and are used for providing stable voltage output. Diode D5 prevents reverse current from flowing into the coil input L5, thereby affecting the charging current. Nodes +4V, +4.2V are voltage output nodes of the external power supply.

Specifically, as shown in fig. 9, the wireless charging circuit 230 further includes a wireless charging chip 231, and the wireless charging chip 231 controls on and off of the wireless charging. The capacitor C3 is an energy storage capacitor of the wireless charging chip 231, and is used for providing a stable output voltage. The capacitor C4 is an energy storage capacitor of the coil output terminal L1, and is used for providing a stable output voltage. The schottky diode D3 is used to stabilize the output voltage of the coil output terminal L1. The diode D2 prevents reverse current from flowing into the coil output terminal L1, affecting the charging current. It can be understood that the wireless charging provides a convenient charging manner for charging the electric toothbrush 1 due to the wireless charging manner.

The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An electric toothbrush, characterized in that the electric toothbrush comprises: battery, supply circuit, control circuit, two display screen circuits, sensor circuit, motor drive circuit, motor, first display screen, and second display screen, the battery passes through supply circuit does control circuit two display screen circuits sensor circuit reaches the motor drive circuit power supply, sensor circuit is used for detecting electric toothbrush's state is worked as sensor circuit monitors electric toothbrush becomes when active state from the quiescent condition, sensor circuit is to control circuit sends sensing signal, control circuit basis sensing signal control two display screen circuit drives first display screen, and second display screen display picture, just control circuit still basis sensing signal control motor drive circuit drives the motor work.

2. The electric toothbrush of claim 1, wherein the control circuit comprises: the central processing chip is provided with a plurality of pins, the peripheral circuit is electrically connected with the pins of the central processing chip, the peripheral circuit sends periodic electric signals to the central processing chip so as to enable the central processing chip to work, and when the central processing chip works, the double-display-screen circuit is controlled to drive the first display screen and the second display screen to display pictures, and the motor driving circuit is controlled to drive the motor to work.

3. The electric toothbrush according to claim 2, wherein the dual display circuit comprises a first field effect transistor, a first display driver chip, a second display driver chip, and a power chip, the first field effect transistor is electrically connected to the central processing chip to be turned on or off under the control of the central processing chip, when the first field effect transistor is turned on under the control of the central processing chip, the first display driver chip and the second display driver chip receive the electric power supplied from the battery through the power chip, a plurality of pins of the first display driver chip and the second display driver chip are electrically connected to a plurality of pins of the central processing chip, when the first display driver chip and the second display driver chip receive the electric power supplied from the battery through the power chip, the first display driving chip and the second display driving chip receive a first driving signal and a second driving signal sent by the central processing chip, the first display driving chip drives the first display screen to display a first picture under the control of the first driving signal, and the second display driving chip drives the second display screen to display a second picture under the control of the second driving signal.

4. The electric toothbrush according to claim 3, wherein the central processing chip detects a remaining capacity of the battery, and controls the power chip to be turned off through the first field effect transistor when the remaining capacity of the battery is less than a preset threshold.

5. The electric toothbrush of claim 2, wherein the sensor circuit comprises: the second field effect transistor is electrically connected with the central processing chip to work under the control of the central processing chip, a plurality of pins of the sensor chip are electrically connected with a plurality of pins of the central processing chip, and when the electric toothbrush is changed from a static state to an active state, the sensor chip detects the acceleration of the electric toothbrush and sends the sensing signal to the central processing chip.

6. The electric toothbrush of claim 2, wherein the motor drive circuit is electrically connected to a plurality of pins of the central processing chip, the motor drive circuit receiving a pulse width modulated signal from the central processing chip to control the motor to operate in different operating modes, wherein the operating modes include: high speed, medium speed, low speed.

7. The electric toothbrush according to claim 6, wherein the central processing chip detects a remaining capacity of the battery, and when the remaining capacity of the battery is less than a predetermined threshold, the frequency, the width, and the duty ratio of the pulse width modulation signal received by the motor driving circuit from the central processing chip are decreased, so that the motor driving circuit drives the motor to operate at a relatively low power.

8. The electric toothbrush of claim 6, further comprising a flash memory circuit electrically connected to the plurality of pins of the central processing chip, wherein the flash memory circuit receives a save signal from the central processing chip when the time period for which the electric toothbrush is changed from active to inactive exceeds a preset time period, and the flash memory circuit saves the operation mode, and wherein the flash memory circuit sends the save signal to the central processing chip when the electric toothbrush is changed from inactive to active, so that the central processing chip controls the motor to operate in the previous operation mode through the motor driving circuit.

9. The electric toothbrush according to claim 2, further comprising a status display circuit, wherein the status display circuit comprises a plurality of LED circuits, the positive electrode of a single LED is electrically connected with the battery, the negative electrode of the single LED is electrically connected with the pin of the central processing chip, and the central processing chip acquires the current status of the electric toothbrush and controls the corresponding LED to be turned off or on to display the status of the electric toothbrush.

10. The electric toothbrush of claim 1, wherein the power supply circuit comprises: voltage stabilizing circuit, boost circuit, wireless charging circuit, voltage stabilizing circuit with the battery electricity is connected, voltage stabilizing circuit is used for making the output voltage of battery is stable, boost circuit has the coil input, boost circuit is connected in order to charge with an external power supply electricity, boost circuit makes external power supply's charging voltage risees, wireless charging circuit has the coil output, the coil output with the coil input sets up relatively in order to receive through electromagnetic induction the charging current of coil input, just the coil output with the battery electricity is connected in order to right the battery charges.