CN214387739U - Music electric toothbrush control circuit and electric toothbrush - Google Patents

Music electric toothbrush control circuit and electric toothbrush Download PDF

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Publication number
CN214387739U
CN214387739U CN202023257954.0U CN202023257954U CN214387739U CN 214387739 U CN214387739 U CN 214387739U CN 202023257954 U CN202023257954 U CN 202023257954U CN 214387739 U CN214387739 U CN 214387739U
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toothbrush
chip
electric toothbrush
audio
pin
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田宝军
安飞虎
李欣
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Shenzhen F&r Technologies Co ltd
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Shenzhen F&r Technologies Co ltd
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Abstract

The utility model discloses a music electric toothbrush control circuit and electric toothbrush relates to electronic circuit technical field. The music electric toothbrush control circuit includes: the main control chip comprises a first pin and a second pin, wherein the first pin is used for outputting a driving signal, and the second pin is used for outputting an audio signal; the audio power amplifier circuit is respectively connected with the first pin and the second pin of the main control chip and is used for receiving a driving signal or an audio signal; the toothbrush motor is connected with the audio power amplifier circuit and used for driving the toothbrush head to generate first vibration according to the driving signal so as to realize tooth brushing or driving the toothbrush head to generate second vibration according to the audio signal so as to realize tooth brushing and music playing. Compared with the prior art, the utility model discloses music electric toothbrush control circuit need not loudspeaker and can play the music to can save special motor drive chip or bridge type drive circuit, have the advantage that the circuit is simple, low cost, toothbrush external diameter size is little.

Description

Music electric toothbrush control circuit and electric toothbrush
Technical Field
The utility model belongs to the technical field of the electronic circuit technique and specifically relates to a music electric toothbrush control circuit and electric toothbrush are related to.
Background
The electric toothbrush does not need a pull saw or a transverse brushing method for brushing teeth, and can brush teeth by vibrating or rotating the toothbrush head back and forth continuously and moving the position of the toothbrush. Most electric toothbrushes also have a function of adjusting a tooth brushing mode, have a stronger tooth cleaning ability than a general toothbrush, and can also reduce gum damage. Wherein, the music electric toothbrush can play music while brushing teeth, and is particularly popular with children.
In the related art, the electric toothbrush usually uses a special driving chip for forward and reverse rotation of the motor or a bridge driving circuit to drive the motor of the toothbrush, and the forward rotation and the reverse rotation are switched continuously according to the vibration beat and the duration time set by the CPU. For the music electric toothbrush, a music chip, a playing circuit and a trumpet are additionally arranged on the basis of the electric toothbrush, so that the cost is high, the trumpet can be placed into the electric toothbrush only when the outer diameter of the shell of the electric toothbrush needs to be thicker due to the size of the trumpet, and the electric toothbrush is not beneficial to holding the toothbrush.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a music electric toothbrush control circuit and electric toothbrush can practice thrift the circuit cost when realizing brushing teeth while listening to the music.
According to the utility model discloses a music electric toothbrush control circuit of first aspect embodiment includes:
the main control chip comprises a first pin and a second pin, wherein the first pin is used for outputting a driving signal, and the second pin is used for outputting an audio signal;
the audio power amplifier circuit is respectively connected with the first pin and the second pin of the main control chip and is used for receiving the driving signal or the audio signal;
the toothbrush motor, the toothbrush motor with audio power amplifier circuit connection for the basis drive signal drive toothbrush head produces first vibrations in order to realize brushing teeth or basis audio signal drive toothbrush head produces the second vibrations in order to realize brushing teeth and music broadcast.
According to the utility model discloses music electric toothbrush control circuit has following beneficial effect at least:
the music electric toothbrush control circuit provided by the embodiment of the utility model utilizes the two pins of the main control chip to respectively output the driving signal and the music signal to the audio power amplification circuit, when the driving signal is output, the audio power amplification circuit drives the toothbrush head to generate a first vibration according to the driving signal, and the toothbrush head cleans teeth, thereby realizing tooth brushing; when the audio signal is output, the audio power amplifier circuit drives the toothbrush head to generate second vibration according to the audio signal, sounds are emitted on teeth and transmitted to ears in a bone conduction mode, and tooth brushing and music playing are achieved simultaneously. Compared with the prior art, the utility model discloses music electric toothbrush control circuit need not loudspeaker and can play the music to can save special motor drive chip or bridge type drive circuit, have the advantage that the circuit is simple, low cost, toothbrush external diameter size is little.
According to some embodiments of the present invention, the music electric toothbrush control circuit further comprises:
and the power supply end is respectively connected with the main control chip and the audio power amplification circuit and is used for supplying power to the main control chip and the audio power amplification circuit.
According to some embodiments of the present invention, the voltage value of the power supply terminal is between 2.8V and 4.2V.
According to the utility model discloses a some embodiments, main control chip is programmable voice broadcast chip or audio frequency bluetooth chip.
According to some embodiments of the utility model, the main control chip is programmable voice play chip, voice play chip's model is YC5638 or YC 5318.
According to some embodiments of the utility model, main control chip is audio frequency bluetooth chip able to programme, audio frequency bluetooth chip's model is AC 6925B.
According to some embodiments of the utility model, audio power amplifier circuit includes audio power amplifier chip, audio power amplifier chip's model is MIX 2018A.
According to some embodiments of the invention, the toothbrush motor is a dc motor.
According to a second aspect embodiment of the present invention, an electric toothbrush comprises:
a musical electric toothbrush control circuit according to the first aspect;
the toothbrush head is connected with the music electric toothbrush control circuit.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the following drawings and examples, in which:
fig. 1 is a schematic structural diagram of a control circuit of a music electric toothbrush according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control circuit of the music electric toothbrush according to another embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a control circuit of the music electric toothbrush according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an electric toothbrush according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The electric toothbrush does not need a pull saw or a transverse brushing method for brushing teeth, and can brush teeth by vibrating or rotating the toothbrush head back and forth continuously and moving the position of the toothbrush. Most electric toothbrushes also have a function of adjusting a tooth brushing mode, have a stronger tooth cleaning ability than a general toothbrush, and can also reduce gum damage. Wherein, the music electric toothbrush can play music while brushing teeth, and is particularly popular with children.
In the related art, the electric toothbrush usually uses a special driving chip for forward and reverse rotation of the motor or a bridge driving circuit to drive the motor of the toothbrush, and the forward rotation and the reverse rotation are switched continuously according to the vibration beat and the duration time set by the CPU. For the music electric toothbrush, a music chip, a playing circuit and a trumpet are additionally arranged on the basis of the electric toothbrush, so that the cost is high, the trumpet can be placed into the electric toothbrush only when the outer diameter of the shell of the electric toothbrush needs to be thicker due to the size of the trumpet, and the electric toothbrush is not beneficial to holding the toothbrush.
Based on the foregoing, the embodiment of the utility model provides a music electric toothbrush control circuit and electric toothbrush adopts audio power amplifier circuit to drive electric toothbrush vibrations and broadcast music, compares in prior art, the utility model discloses music electric toothbrush control circuit need not loudspeaker and can broadcast the music to can save special motor drive chip or bridge type drive circuit, have the advantage that the circuit is simple, low cost, toothbrush external diameter are little. The embodiment of the utility model provides a realize through following technical scheme: the toothbrush motor with internal resistance similar to that of the horn (4-8 omega) is used as a load, firstly, a CPU capable of playing music outputs driving waveforms or music signals in different tooth brushing modes, a driving audio power amplifier chip drives the toothbrush motor to drive a toothbrush head to generate mechanical vibration swinging back and forth along with the driving waveforms or the music signals output by the CPU, and the mechanical vibration is transmitted to teeth in an oral cavity through the toothbrush head to clean the teeth, so that a special driving chip or a bridge type driving circuit for forward and reverse rotation of a motor is saved; secondly, the sound is generated through the teeth, when the toothbrush head contacts the teeth, the music sound wave vibration of the toothbrush head can make sound on the teeth and transmit the sound to the ears in a bone conduction mode, thereby completing the playing and listening of the music, and the loudspeaker is not needed.
In a first aspect, as shown in fig. 1, the present invention provides a music electric toothbrush control circuit, comprising:
the main control chip comprises a first pin and a second pin, wherein the first pin is used for outputting a driving signal, and the second pin is used for outputting an audio signal;
the audio power amplifier circuit is respectively connected with the first pin and the second pin of the main control chip and is used for receiving a driving signal or the audio signal;
the toothbrush motor is connected with the audio power amplifier circuit and used for driving the toothbrush head to generate first vibration according to the driving signal so as to realize tooth brushing or driving the toothbrush head to generate second vibration according to the audio signal so as to realize tooth brushing and music playing.
The music electric toothbrush control circuit provided by the embodiment of the utility model utilizes the two pins of the main control chip to respectively output the driving signal and the music signal to the audio power amplification circuit, when the driving signal is output, the audio power amplification circuit drives the toothbrush head to generate a first vibration according to the driving signal, and the toothbrush head cleans teeth, thereby realizing tooth brushing; when the audio signal is output, the audio power amplifier circuit drives the toothbrush head to generate second vibration according to the audio signal, sounds are emitted on teeth and transmitted to ears in a bone conduction mode, and tooth brushing and music playing are achieved simultaneously. Compared with the prior art, the utility model discloses music electric toothbrush control circuit need not loudspeaker and can play the music to can save special motor drive chip or bridge type drive circuit, have the advantage that the circuit is simple, low cost, toothbrush external diameter size is little.
In some embodiments, the drive signal is a signal that enables the electric toothbrush to function properly and the audio signal is a signal of a particular frequency range that can be heard by the human ear.
In some embodiments, the audio signal may be a music signal for playing music; the toothbrush can also be a voice signal which is used for playing voice (such as audio books) and can listen to music or voice while brushing teeth, so that the interestingness during brushing teeth is increased.
In some embodiments, as shown in fig. 2, the musical electric toothbrush control circuit further comprises:
and the power supply end is respectively connected with the main control chip and the audio power amplification circuit and is used for supplying power to the main control chip and the audio power amplification circuit.
In some embodiments, the voltage value of the power supply terminal is between 2.8V and 4.2V.
In some embodiments, the main control chip is a programmable voice playing chip or an audio bluetooth chip.
In some embodiments, if the main control chip is a programmable voice playing chip, the model of the voice playing chip is YC5638 or YC5318, and the audio output port with DAC and the built-in FLASH can play for 640 seconds or 320 seconds.
In some embodiments, if the main control chip is a programmable audio bluetooth chip, the model of the audio bluetooth chip is AC6925B, and the audio bluetooth chip can be wirelessly connected to an intelligent terminal such as a mobile phone or a tablet to obtain more audio.
In some embodiments, the audio power amplifier circuit includes an audio power amplifier chip, and the model of the audio power amplifier chip is MIX 2018A. MIX2018A is a high efficiency, filter-less 5W mono audio amplifier.
In some embodiments, the toothbrush motor is a dc motor. The DC motor should match with the impedance of the audio power amplifier chip to obtain enough music volume and vibration force of the toothbrush head, and to achieve the effect of effectively cleaning teeth.
In some embodiments, as shown in fig. 3, the IC1 is a main control chip, the IC2 is an audio power amplifier chip, the BAT is a power supply terminal, and the MT is a toothbrush motor. The fifth capacitor C5 is a VDD supply terminal filter capacitor of the main control chip IC 1.
In some embodiments, the Audio pin (first pin) of the main control chip IC1 is responsible for outputting Audio signals, the MT pin (second pin) is responsible for outputting driving signals of different tooth brushing modes, and the EN pin is responsible for outputting a high level or a low level for controlling whether the Audio power amplifier chip IC2 works or not.
In some embodiments, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, and the audio power amplifier chip IC2 together form an audio power amplifier circuit. The first capacitor C1 is a bypass capacitor of the power supply terminal BAT of the audio power amplifier chip IC 2. The second capacitor C2 is a BYPASS capacitor of the BYPASS pin of the audio power amplifier chip IC 2. The third resistor R3 is a pull-up resistor for operating the audio power amplifier chip IC2 in the class D high efficiency audio power amplifier mode. The third capacitor C3 and the fourth capacitor C4 are audio input capacitors for blocking direct current. The fourth resistor R4 and the fifth resistor R5 are attenuation resistors for controlling the maximum sound volume not to be too large, and the larger the resistance values of the fourth resistor R4 and the fifth resistor R5 are, the smaller the maximum vibration force of the toothbrush head and the maximum sound volume of music are. The first resistor R1 and the second resistor R2 are pull-down resistors and pull-up resistors for controlling SD turn-off control pins (low level turn-on and high level turn-off) of the audio power amplifier chip IC 2. The SD cut-off control pin of the audio power amplifier chip IC2 is connected with the VDD power supply end of the main control chip IC1 through a second resistor R2.
In some embodiments, when the electric toothbrush is not powered on or not in operation, the EN pin of the main control chip IC1 is in an input high-resistance state by default, the SD off control pin of the audio power amplifier chip IC2 is connected to VDD through the pull-up resistor R2 to be at a high level, and the audio power amplifier chip IC2 is turned off and does not operate, so as to achieve the purpose of power saving with ultra-low power consumption.
In some embodiments, when the electric toothbrush works, the EN pin of the main control chip IC1 outputs a low level, the power supply terminal BAT divides the voltage through the second resistor R2 and the first resistor R1, so that the SD off control pin of the audio power amplifier chip IC2 is at a low level, and the audio power amplifier chip IC2 is turned on to work. The MT pin of the main control chip IC1 outputs a driving signal, the driving signal is coupled to the IN pin of the audio power amplifier chip IC2 through the fourth capacitor C4, power amplification is carried out inside the audio power amplifier chip IC2, and finally the driving signal is output from the OUTP and OUTN two audio output pins of the audio power amplifier chip IC2 to drive the toothbrush motor to vibrate back and forth, and the vibration strength and interval time depend on the signal frequency, duty ratio and amplitude input by the IN pin of the audio power amplifier chip IC 2. The toothbrush motor drives the toothbrush head to vibrate and transmits the vibration to the teeth through the toothbrush head, so that the teeth are cleaned.
IN some embodiments, when the electric toothbrush is IN the music mode, the Audio pin of the main control chip IC1 outputs an Audio signal, the Audio signal is coupled to the IN pin of the Audio power amplifier chip IC2 through the third capacitor C3, the power is amplified inside the Audio power amplifier chip IC2, and finally the Audio signal is output from the two Audio output pins OUTP and OUTN of the Audio power amplifier chip IC2 to drive the toothbrush motor to vibrate back and forth. The toothbrush motor drives the toothbrush head to vibrate, the vibration of the toothbrush head can make a sound on teeth and transmit the sound to ears in a bone conduction mode, and on one hand, the toothbrush can brush teeth and on the other hand, music can be heard. The larger the amplitude of the Audio signal output by the Audio pin of the main control chip IC1 is, the louder the Audio sound heard by the ear is, the vibration strength of the toothbrush head is synchronously increased, and at the moment, the MT pin of the main control chip IC1 is set to be in an input high-impedance state and has no signal output.
In some embodiments, when the electric toothbrush is in the non-music mode, the Audio pin of the main control chip IC1 outputs no Audio signal, and the MT pin of the main control chip IC1 outputs a set motor operating waveform (different tooth brushing modes, different frequencies, duty ratios and time intervals), which is coupled by the fourth capacitor C4, amplified by the internal power of the Audio power amplifier chip IC2, and then drives the toothbrush motor to vibrate back and forth accordingly. The larger the duty ratio of the output waveform of the MT pin of the main control chip IC1 is, the larger the vibration force is; the higher the frequency, the faster the toothbrush head will vibrate.
In some embodiments, in device selection, for an electric toothbrush powered by a single 18650 specification lithium battery, the working voltage of the power supply terminal BAT is usually in the range of 2.8V to 4.2V, and the main control chip IC1 should adopt a programmable voice playing chip or audio bluetooth chip with a CPU and I/O port sleep wake-up (to implement ultra-low power consumption when shutdown), and the working voltage is not lower than the range of 2.5V to 5V. The voice playing chip can select models (SOP16 package) such as 2.4V-5V of working voltage, DAC audio output port, built-in FLASH capable of playing YC5638 for 640 seconds or YC5318 for 320 seconds, and the like, but the built-in music is fixed and not replaceable. The audio Bluetooth chip can be wirelessly connected with intelligent terminals such as mobile phones and tablets to acquire more music, and monophonic Bluetooth chips such as AC6925B (working voltage 2.2V-5.5V) can be selected. The audio power amplifier chip IC2 is preferably a single-channel D-type high-efficiency audio power amplifier patch IC with a turn-off control pin, a working voltage of not less than 2.5V-5V and a power of not less than 3W, such as MIX 2018A. The toothbrush motor MT should select a DC motor with a resistance value of 4 omega-8 omega, a current resistance of more than 600mA and a working voltage of 2.9V-4.5V to match with the impedance of the audio power amplifier chip IC2 so as to obtain enough music volume and toothbrush head vibration force and achieve the effect of effectively cleaning teeth. The first resistor R1 can select a 0603 chip resistor with a resistance value of 100 omega, the second resistor R2 and the third resistor R3 can select a 0603 chip resistor with a resistance value of 4.7K omega-10K omega, the fourth resistor R4 and the fifth resistor R5 can select a 0603 chip resistor with a resistance value of 47K omega-100K omega, the second capacitor C2 and the fifth capacitor C5 can select a 0603 chip capacitor with a capacitance value of 1uF, the third capacitor C3 and the fourth capacitor C4 can select a 0603 chip capacitor with a capacitance value of 100nF, and the first capacitor C1 can select a 0805 chip capacitor with a capacitance value of 22uF and a working voltage of 16V.
In a second aspect, as shown in fig. 4, the present invention further provides an electric toothbrush, comprising:
a musical electric toothbrush control circuit according to any embodiment of the first aspect;
the toothbrush head is connected with the control circuit of the music electric toothbrush.
In some embodiments, the toothbrush head is connected to a music power toothbrush control circuit for driving the toothbrush head to generate a first vibration to effectuate brushing or a second vibration to effectuate brushing and music playing. For a specific implementation principle, please refer to the description of the first aspect, which is not repeated herein.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims (9)

1. Music electric toothbrush control circuit, characterized by, includes:
the main control chip comprises a first pin and a second pin, wherein the first pin is used for outputting a driving signal, and the second pin is used for outputting an audio signal;
the audio power amplifier circuit is respectively connected with the first pin and the second pin of the main control chip and is used for receiving the driving signal or the audio signal;
the toothbrush motor, the toothbrush motor with audio power amplifier circuit connection for the basis drive signal drive toothbrush head produces first vibrations in order to realize brushing teeth or basis audio signal drive toothbrush head produces the second vibrations in order to realize brushing teeth and music broadcast.
2. The musical electric toothbrush control circuit of claim 1 further comprising:
and the power supply end is respectively connected with the main control chip and the audio power amplification circuit and is used for supplying power to the main control chip and the audio power amplification circuit.
3. The musical electric toothbrush control circuit according to claim 2, wherein the voltage value of the power supply terminal is between 2.8V and 4.2V.
4. The musical electric toothbrush control circuit according to claim 1, wherein the main control chip is a programmable voice playing chip or an audio bluetooth chip.
5. The musical electric toothbrush control circuit according to claim 4, wherein the main control chip is a programmable voice playing chip, and the model of the voice playing chip is YC5638 or YC 5318.
6. The musical electric toothbrush control circuit as claimed in claim 4, wherein the master control chip is a programmable audio Bluetooth chip having a model number AC 6925B.
7. The control circuit of the music electric toothbrush according to claim 1, wherein the audio power amplifier circuit comprises an audio power amplifier chip, and the audio power amplifier chip is of a type MIX 2018A.
8. The musical electric toothbrush control circuit of claim 1, wherein the toothbrush motor is a dc motor.
9. An electric toothbrush, comprising:
a musical electric toothbrush control circuit according to any one of claims 1 to 8;
the toothbrush head is connected with the music electric toothbrush control circuit.
CN202023257954.0U 2020-12-29 2020-12-29 Music electric toothbrush control circuit and electric toothbrush Active CN214387739U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114948310A (en) * 2021-10-29 2022-08-30 青岛经济技术开发区海尔热水器有限公司 Tooth brushing method, server and control equipment of electric toothbrush
CN116831769A (en) * 2023-07-31 2023-10-03 广州星际悦动股份有限公司 Output control method, device, equipment and storage medium of oral care equipment
CN116831768A (en) * 2023-07-31 2023-10-03 广州星际悦动股份有限公司 Output control method, device, equipment and storage medium of oral care equipment
CN117179941A (en) * 2023-09-27 2023-12-08 广州星际悦动股份有限公司 Information prompting method, device, equipment and storage medium of oral care equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114948310A (en) * 2021-10-29 2022-08-30 青岛经济技术开发区海尔热水器有限公司 Tooth brushing method, server and control equipment of electric toothbrush
CN116831769A (en) * 2023-07-31 2023-10-03 广州星际悦动股份有限公司 Output control method, device, equipment and storage medium of oral care equipment
CN116831768A (en) * 2023-07-31 2023-10-03 广州星际悦动股份有限公司 Output control method, device, equipment and storage medium of oral care equipment
CN116831769B (en) * 2023-07-31 2024-03-01 广州星际悦动股份有限公司 Output control method, device, equipment and storage medium of oral care equipment
CN116831768B (en) * 2023-07-31 2024-04-02 广州星际悦动股份有限公司 Output control method, device, equipment and storage medium of oral care equipment
CN117179941A (en) * 2023-09-27 2023-12-08 广州星际悦动股份有限公司 Information prompting method, device, equipment and storage medium of oral care equipment

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