Control method of electric toothbrush and electric toothbrush

Abstract

The invention discloses a control method of an electric toothbrush and the electric toothbrush. The control method of the electric toothbrush comprises the following steps: generating a first voltage source signal according to a preset first data time sequence; generating a first vibration source signal according to a preset second data time sequence; driving a motor of the electric toothbrush to operate based on the first voltage source signal and the first vibration source signal, and generating a third data time sequence; adjusting the first data time sequence according to the third data time sequence; generating a second voltage source signal according to the adjusted first data time sequence; and driving a motor of the electric toothbrush to operate based on the second voltage source signal and the first vibration source signal. According to the electric toothbrush control method, the voltage and the frequency of the motor are controlled through the double control sources respectively, the driving voltage is adjusted in real time according to the operation frequency of the motor, dynamic power control over the motor is achieved, and the effective interval of the motion frequency of the motor can be expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of electric toothbrushes, and in particular to a control method for an electric toothbrush and an electric toothbrush. Background Art

[0002] Electric toothbrushes produce high-frequency vibrations in the brush head through the rapid rotation or vibration of the motor core. Electric toothbrushes include rotary electric toothbrushes and sonic vibration electric toothbrushes.

[0003] At present, electric toothbrushes generally use a single vibration frequency to control the periodic vibration or swing of the motor, wherein the frequency range is usually 200Hz to 300Hz. When the motor drives the toothbrush head to vibrate, the single vibration frequency will produce a relatively single and harsh sound. Summary of the invention

[0004] The invention provides a control method of an electric toothbrush and an electric toothbrush, so as to solve the problem of single vibration frequency of the electric toothbrush in the prior art.

[0005] According to one aspect of the present invention, there is provided a method for controlling an electric toothbrush, comprising:

[0006] Generate a first voltage source signal according to a preset first data time sequence;

[0007] Generate a first vibration source signal according to a preset second data time series;

[0008] driving a motor of the electric toothbrush to operate based on the first voltage source signal and the first vibration source signal, and generating a third data time series;

[0009] adjusting the first data time series according to the third data time series;

[0010] generating a second voltage source signal according to the adjusted first data time series;

[0011] The motor of the electric toothbrush is driven to operate based on the second voltage source signal and the first vibration source signal.

[0012] Optionally, the driving of the motor of the electric toothbrush based on the first voltage source signal and the first vibration source signal to generate the third data time series includes:

[0013] generating a first frequency response curve based on the first voltage source signal and the first vibration source signal;

[0014] generating a frequency characteristic compensation curve according to the target frequency response characteristic of the motor and the first frequency response curve;

[0015] The third data time series is obtained based on the frequency characteristic compensation curve.

[0016] Optionally, generating a frequency characteristic compensation curve according to a target frequency response characteristic of the motor and the first frequency response curve includes:

[0017] Obtaining a target frequency response characteristic of the motor;

[0018] adjusting the amplitude within a preset segment of the first frequency response curve according to the amplitude of the target frequency response characteristic of the motor;

[0019] The frequency characteristic compensation curve is obtained according to the adjustment process of the first frequency response curve.

[0020] Optionally, adjusting the amplitude within a preset segment of the first frequency response curve includes:

[0021] Obtaining the natural frequency of the motor according to the target frequency response characteristics of the motor;

[0022] When the frequency of the target frequency response characteristic of the motor is greater than the natural frequency, comparing the amplitude of the first frequency response curve with the amplitude of the target frequency response characteristic;

[0023] When the amplitude of the first frequency response curve is smaller than the amplitude of the target frequency response characteristic, the amplitude of the corresponding frequency in the first frequency response curve is increased.

[0024] Optionally, adjusting the first data time series according to the third data time series includes:

[0025] The preset segment of the first data time series is superimposed with the amplitude of the third data time series at the corresponding moment to obtain the adjusted first data time series.

[0026] Optionally, generating a second voltage source signal according to the adjusted first data time series includes:

[0027] Acquiring a driving voltage amplitude of a preset segment in the adjusted first data time series;

[0028] The second voltage source signal is obtained according to the driving voltage amplitude.

[0029] Optionally, generating the first vibration source signal according to a preset second data time series includes:

[0030] Decoding according to the second data time series;

[0031] Power amplification is performed based on the decoded second data time series.

[0032] Optionally, the second data time series is an audio signal.

[0033] Optionally, before generating the first voltage source signal according to the preset first data time sequence and generating the first vibration source signal according to the preset second data time sequence, the method further comprises:

[0034] The timestamps of the first data time series are aligned with the timestamps of the second data time series.

[0035] According to another aspect of the present invention, an electric toothbrush is provided, comprising a processor module, a power amplifier module, a power supply regulating module, a motor, an amplitude sensor, a toothbrush handle and a toothbrush head; the processor module is connected to the power amplifier module, the power supply regulating module and the amplitude sensor, and the motor is connected to the power amplifier module, the power supply regulating module and the amplitude sensor; the processor module, the power amplifier module, the power supply regulating module, the motor and the amplitude sensor are arranged inside the toothbrush handle, the toothbrush head is connected to the toothbrush handle, and the toothbrush head is electrically connected to the motor, the motor is used to drive the toothbrush head to generate a first swing amplitude at different frequencies according to an audio signal, and generate a target driving voltage corresponding to the audio signal according to the target swing amplitude and the first swing amplitude, and the motor is also used to drive the toothbrush head to vibrate according to the audio signal and the target driving voltage, and the amplitude difference of the vibration operation in the high frequency zone and the low frequency zone is within a preset range.

[0036] The technical solution of the embodiment of the present invention provides a control method for an electric toothbrush, including: generating a first voltage source signal according to a preset first data time series, generating a first vibration source signal according to a preset second data time series, and driving the motor of the electric toothbrush to operate based on the first voltage source signal and the first vibration source signal, wherein the voltage value of the first voltage source signal is constant, and the generated third data time series represents the frequency response curve generated by the motor according to the second data time series (i.e., the audio signal). For example, when the amplitude of the high frequency segment of the frequency response curve is low, the first data time series is adjusted so that the second voltage source signal generated by the adjusted first data time series can increase the amplitude of the high frequency segment of the frequency response curve. At this time, the motor of the electric toothbrush is driven to operate based on the second voltage source signal and the first vibration source signal, and the amplitude of the motor's high frequency segment operation can be increased. The control method for the electric toothbrush provided by the present invention controls the voltage and frequency of the motor respectively through dual control sources, and adjusts the driving voltage in real time according to the motor operating frequency to realize dynamic power control of the motor, which can expand the effective range of the motor motion frequency and solve the problem of the single vibration frequency of the electric toothbrush in the prior art.

[0037] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 is a flow chart of a control method of an electric toothbrush provided by an embodiment of the present invention;

[0040] Figure 2 is a schematic structural diagram of an electric toothbrush provided by an embodiment of the present invention;

[0041] Figure 3 is a motor frequency response curve diagram provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] The embodiment of the present invention provides a control method for an electric toothbrush. Figure 1 is a flow chart of a control method of an electric toothbrush provided by an embodiment of the present invention, such as Figure 1As shown, the control method includes:

[0045] S110 , generating a first voltage source signal according to a preset first data time sequence.

[0046] In the implementation of the present invention, the first data time series is a sequence of values ​​at different times compiled in chronological order. For example, the first data time series can be a pulse sequence, and the voltage value of the voltage source signal is changed by adjusting the duty cycle of the pulse sequence. The first voltage source signal is a signal for controlling the motor power supply voltage of the electric toothbrush, and the voltage value of the first voltage source signal is a constant value.

[0047] S120. Generate a first vibration source signal according to a preset second data time series.

[0048] The second data time series is a sequence of values ​​at different times compiled in chronological order. For example, the second time series is an audio signal, including simulated music or natural sounds, and the audio signal is stored in a PCM (Pulse Code Modulation) encoding manner. The first vibration source signal is a signal for controlling the motor speed (frequency) of the electric toothbrush.

[0049] S130. Drive the motor of the electric toothbrush based on the first voltage source signal and the first vibration source signal, and generate a third data time series.

[0050] The voltage value of the first voltage source signal is constant, providing a supply voltage for the motor to operate, and the frequency of the motor is controlled based on the first vibration source signal generated by the audio signal. The motor operates according to the first voltage source signal and the first vibration source signal, and a frequency response curve is generated. The third data time can be a time series of amplitude changes over time generated according to the frequency response curve, or a time series of amplitude changes over time generated according to a frequency characteristic compensation curve generated according to the frequency response curve and the target frequency response characteristic of the motor.

[0051] S140. Adjust the first data time series according to the third data time series.

[0052] In a preset segment of the third data time series, if the amplitude is too large, the amplitude of the corresponding segment in the first data time series is reduced; if the amplitude is too small, the amplitude of the corresponding segment in the first data time series is increased.

[0053] S150. Generate a second voltage source signal according to the adjusted first data time series.

[0054] The adjusted first data time series increases or decreases the amplitude of the first data time series. When the first data time series is a pulse sequence, the adjusted first data time series increases or decreases the duty cycle of the pulse sequence. The second voltage source signal is a voltage signal output according to the adjusted first data time series, which is increased or decreased compared to the first voltage source signal.

[0055] S160. Drive the motor of the electric toothbrush to operate based on the second voltage source signal and the first vibration source signal.

[0056] The motor operates according to the second voltage source signal and the first vibration source signal. At this time, the frequency response curve generated by the motor is close to the target frequency characteristic. The drive voltage is adjusted in real time according to the motor operating frequency to achieve dynamic power control of the motor, which can expand the effective range of the motor movement frequency.

[0057] The technical solution of this embodiment provides a control method for an electric toothbrush, including: generating a first voltage source signal according to a preset first data time series, generating a first vibration source signal according to a preset second data time series, and driving the motor of the electric toothbrush to operate based on the first voltage source signal and the first vibration source signal, wherein the voltage value of the first voltage source signal is constant, and the generated third data time series represents the frequency response curve generated by the motor according to the second data time series (i.e., the audio signal). For example, when the amplitude of the high frequency segment of the frequency response curve is low, the first data time series is adjusted so that the second voltage source signal generated by the adjusted first data time series can increase the amplitude of the high frequency segment of the frequency response curve. At this time, the motor of the electric toothbrush is driven to operate based on the second voltage source signal and the first vibration source signal, and the amplitude of the motor's high frequency segment operation can be increased. The electric toothbrush control method provided in this embodiment controls the voltage and frequency of the motor respectively through dual control sources, and adjusts the driving voltage in real time according to the motor operating frequency to achieve dynamic power control of the motor, which can expand the effective range of the motor movement frequency and solve the problem of the single vibration frequency of the electric toothbrush in the prior art.

[0058] On the basis of the above embodiment, the motor of the electric toothbrush is driven to operate based on the first voltage source signal and the first vibration source signal, and a third data time series is generated, including: generating a first frequency response curve based on the first voltage source signal and the first vibration source signal; generating a frequency characteristic compensation curve according to the target frequency response characteristics of the motor and the first frequency response curve; and obtaining a third data time series based on the frequency characteristic compensation curve.

[0059] Among them, the first frequency response curve represents the change of the output voltage (or level) of the motor at different frequencies in response to the first voltage source signal and the first vibration source signal. The target frequency response characteristic of the motor refers to the output response capability of the motor when the input signal frequency changes, which reflects the change of the output voltage or level of the motor at different frequencies. It is an important indicator to measure the follow-up ability and stability of the motor to different frequency signals. The frequency characteristic compensation curve refers to a curve that improves the system performance by adjusting the frequency response characteristics of the system. It can reduce the clock and phase difference, synchronize the input and output frequencies, and prevent the frequency change from attenuating or losing.

[0060] Specifically, a frequency characteristic compensation curve is generated according to a target frequency characteristic curve of the motor and a first frequency response curve, including: obtaining a target frequency response characteristic of the motor; adjusting the amplitude within a preset segment of the first frequency response curve according to the amplitude of the target frequency characteristic curve of the motor; and obtaining the frequency characteristic compensation curve according to the adjustment process of the first frequency response curve.

[0061] In this embodiment, the target frequency response characteristics of the motor can be obtained by experiments to obtain the optimal response characteristics of the motor, and the first frequency response curve is adjusted according to the target frequency response characteristics of the motor. Specifically, the first frequency response curve is adjusted to coincide with the target frequency response characteristics. For example, at the same frequency, the amplitude of the first frequency response curve is smaller than the amplitude of the target frequency response characteristic, and the amplitude of the first frequency response curve needs to be increased.

[0062] Exemplarily, adjusting the amplitude within a preset segment of the first frequency response curve includes: obtaining the natural frequency of the motor based on the target frequency response characteristics of the motor; when the frequency of the target frequency response characteristics of the motor is greater than the natural frequency, comparing the amplitude of the first frequency response curve and the amplitude of the target frequency response characteristics; when the amplitude of the first frequency response curve is less than the amplitude of the target frequency response characteristics, increasing the amplitude of the corresponding frequency in the first frequency response curve.

[0063] In this embodiment, the natural frequency of the motor refers to the natural frequency of the motor structure vibration, which is an inherent property of the motor and can be obtained through experiments, detection and other methods. At the natural frequency, the amplitude of the target frequency response characteristic is the largest. When the frequency of the motor's target frequency response characteristic is greater than the natural frequency, since the amplitude decreases when the motor frequency is large, by increasing the amplitude of the corresponding frequency in the first frequency response curve, the amplitude of the motor high-frequency operation is increased, thereby expanding the effective range of the motor movement frequency.

[0064] Optionally, adjusting the first data time series according to the third data time series includes: superimposing the amplitude of the third data time series at the corresponding moment on a preset segment of the first data time series to obtain an adjusted first data time series. The third data time series is a time series whose amplitude varies with time generated according to a frequency characteristic compensation curve generated according to the first frequency response curve and a target frequency response characteristic of the motor, and the first data time series is superimposed with the third data time series to obtain the adjusted first data time series.

[0065] Specifically, generating a second voltage source signal according to the adjusted first data time series includes: obtaining a driving voltage amplitude of a preset segment in the adjusted first data time series; and obtaining a second voltage source signal according to the driving voltage amplitude. The driving voltage amplitude refers to data calculated according to a preset algorithm based on the amplitude of the first data time series, and the second voltage source signal is a voltage waveform generated according to the driving voltage amplitude, which is used to control the power supply voltage of the electric toothbrush motor. Referring to the above embodiment, the frequency response characteristics generated when the motor is driven according to the second voltage source signal and the first vibration source signal are close to the target frequency response characteristics.

[0066] On the basis of the above-mentioned embodiment, a first vibration source signal is generated according to a preset second data time sequence, including: decoding according to the second data time sequence; and power amplification based on the decoded second data time sequence.

[0067] In this embodiment, decoding the second data time series includes reading an audio file (i.e., a file including an audio signal), which may be stored in advance, parsing the format of the audio file, parsing the audio format information stored in the audio file by a decoder, decoding the audio data, decoding the read audio data by a decoder, and restoring the digital signal to an analog signal. For example, a discrete digital signal is converted into a continuous analog signal by a digital-to-analog converter, so that the audio signal can be output after power amplification to obtain a first vibration source signal for controlling the motor frequency.

[0068] On the basis of the above embodiment, before generating the first voltage source signal according to the preset first data time series and generating the first vibration source signal according to the preset second data time series, the method includes: aligning the timestamp of the first data time series with the timestamp of the second data time series. Wherein, the timestamp refers to a number or a string used to mark the time when an event occurs. By adding the timestamp to the first data time series and the second data time series, it is ensured that the observation values ​​in the two data time series are aligned in time for subsequent analysis and processing.

[0069] The embodiment of the present invention further provides an electric toothbrush, Figure 2is a schematic diagram of the structure of an electric toothbrush provided by an embodiment of the present invention, such as Figure 2 As shown, the electric toothbrush includes a processor module 10, a power amplifier module 20, a power supply regulating module 30, a motor 40, an amplitude sensor 50, a toothbrush handle (not shown in the figure) and a toothbrush head (not shown in the figure); the processor module 10 is connected to the power amplifier module 20, the power supply regulating module 30 and the amplitude sensor 50, and the motor 40 is connected to the power amplifier module 20, the power supply regulating module 30 and the amplitude sensor 50; the processor module 10, the power amplifier module 20, the power supply regulating module 30, the motor 40 and the amplitude sensor 50 are arranged inside the toothbrush handle, the toothbrush head is connected to the toothbrush handle, and the toothbrush head is electrically connected to the motor 40, and the motor is used to drive the toothbrush head to vibrate.

[0070] In this example, the processor module 10 is a module for data processing such as data storage, data transmission and logical operations. The processor module 10 can be a microcontroller. The microcontroller integrates a central processing unit, memory, counter, interface, etc., and can perform complex control, calculation and data processing tasks. The power amplifier module 20 is a module for power amplification of the input signal. For example, the power amplifier module 20 includes a power amplifier. The power regulation module 30 is a module for adjusting the output voltage according to the input second data time series. The voltage signal output by the voltage regulation module 30 is used to provide a power supply voltage for the motor. The motor 40 is a device that converts electrical energy into mechanical energy to drive the toothbrush head to vibrate. The amplitude sensor 50 is a device for detecting the amplitude of the motor, which can convert the measured amplitude information into an electrical signal or other required form of information output according to a certain rule.

[0071] The electric toothbrush provided in this embodiment executes the control method in any of the above embodiments. Referring to the above embodiments, the preset first data time series and the preset second data time series are stored in the memory of the processor module 10, and the power amplification module 20 decodes the second data time series and then performs power amplification, or the processor module 10 decodes the second data time series and outputs the decoded second data time series, and the power amplification module 20 performs power amplification on the decoded second data time series to obtain the first vibration source signal. The voltage regulation module 30 outputs a voltage signal (i.e., a first voltage source signal) according to the first data time series output by the processor module 10. The motor 40 operates according to the first vibration source signal and the first voltage source signal, and generates a first frequency response curve. According to the first frequency response curve and the target frequency response characteristics of the motor, a third data time series is obtained. The first data series is adjusted according to the third data time series, and a second voltage source signal is generated according to the adjusted first data time series. The motor 40 of the electric toothbrush is driven to operate based on the second voltage source signal and the first vibration source signal. The motor 40 drives the toothbrush head to generate a first swing amplitude (corresponding to the first frequency response curve) at different frequencies according to the audio signal, and generates a target driving voltage (i.e., a second voltage source signal) corresponding to the audio signal according to the target swing amplitude (i.e., the target frequency response characteristics) and the first swing amplitude. The motor is also used to drive the toothbrush head to vibrate according to the audio signal and the target driving voltage. The amplitude difference between the vibration operation in the high frequency zone and the low frequency zone is within a preset range. For example, the preset range of the amplitude difference is within 20% of the amplitude. The electric toothbrush control method provided in this embodiment controls the voltage and frequency of the motor respectively through dual control sources, adjusts the driving voltage in real time according to the motor operating frequency, realizes dynamic power control of the motor, and can expand the effective range of the motor movement frequency. For example, when the motor operating frequency is relatively high, the high-frequency movement amplitude of the motor is increased by increasing the voltage value of the voltage source signal. When the motor operating frequency is relatively low, the low-frequency movement amplitude of the motor is reduced by reducing the voltage value of the voltage source signal, thereby expanding the effective range of the motor movement frequency.

[0072] On the basis of the above embodiment, the vibration of the motor is controlled by the data of the fluctuation time series, and its fluctuation frequency is not a single constant frequency, but simulates music or natural sounds. From the time domain, it is a time series of fluctuation data, and from the frequency domain, it is a mixture of different frequencies in space and time. Since the mechanical movement of the motor has a large moment of inertia, if a high frequency and large movement amplitude is to be maintained, a higher energy (power) and torque need to be input to achieve it. Therefore, the frequency of the electric toothbrush is usually 250Hz to 300Hz. As the frequency increases, the vibration amplitude of the electric toothbrush will become very small. When it exceeds 300Hz, it usually does not have enough vibration amplitude to achieve the purpose of cleaning the tooth surface. This embodiment can make the electric toothbrush have a higher working cleaning frequency range by improving the driving ability of the motor in the high frequency range.

[0073] The working cleaning frequency range in the above embodiment can cover the basic music requirements, such as the frequency range of the 8th syllable in the music score is 261.6Hz~493.8Hz, covering Do, Re, Mi, Fa, Sol, La, Si and lower 8th (130.8Hz~246.9Hz), and higher 8th (523.2~987Hz). Existing electric toothbrush motors usually have a music frequency range that meets the lower 8th. In this embodiment, the electric toothbrush motor at least meets the main music frequency band of 130.8Hz~493.8Hz through the control of the motor by dual control sources. Through higher dynamic capability control, it can meet the higher pitch range of 523.2~987.6Hz, or even above 1046.4Hz, and can maintain sufficient kinetic energy to enable the motor to have a vibration amplitude that meets the cleaning force requirements. By improving the conversion efficiency of the motor's electrical energy and mechanical energy, a higher frequency response can be achieved. That is, by injecting higher energy into the motor to drive it, a higher frequency response can be achieved, so that the frequency response fully covers the frequency range required for music expression, such as the frequency range of bass, mid-range and treble, thus meeting the prerequisites for expressing music.

[0074] When the frequency response range is met, the mid-range and bass can increase the motor's movement amplitude, and the treble will have better sound penetration, but the movement amplitude becomes smaller. In single-frequency music, there are usually ups and downs of high, medium and low. That is, the high-pitched music expression will not be continuous high-pitched, but often changes from mid-bass to treble and then back to mid-bass. Although the short-lived high-pitched sound does not increase the motor's movement amplitude, the adjacent mid-bass has already caused the motor to move in a large amplitude. At this moment, the high-pitched sound is a rapid disturbance in inertial motion, thereby improving the sound penetration and layering, and using the rapidly changing frequency of the audio signal to achieve a fusion of movement amplitude and sound layering.

[0075] Since the frequency response area can be understood as the movement amplitude of the motor under the same supply voltage at different frequencies, Figure 3 is a motor frequency response curve diagram provided by an embodiment of the present invention, such as Figure 3 As shown, the solid line is the frequency response curve of the electric toothbrush motor in the prior art. There is a highest point at a specific frequency (i.e., the motor's natural frequency). As the frequency increases, the vibration amplitude decays rapidly. L represents the amplitude, f represents the frequency, f0 represents the natural frequency, l1 and l2 represent the preset amplitude ranges, and the dotted line represents the motor frequency response curve in this embodiment. It has a wider frequency range near the peak of the frequency response (satisfying the preset amplitude range), thereby increasing the high-frequency vibration amplitude of the motor.

[0076] If the motor continues to work at a low frequency, when a higher energy is injected, the vibration amplitude of the motor will be too large. Therefore, the energy injection is reduced at the low frequency stage to maintain a suitable large movement amplitude to avoid excessive amplitude. The energy injection is increased at the high frequency stage to maintain a larger movement amplitude to avoid too small amplitude, thereby obtaining the best movement amplitude range and expanding the effective range of the movement frequency. Referring to the above embodiment, through the joint synchronous control of the first data time series and the second data time series, the movement amplitude of the motor in each frequency segment meets the requirements, including the requirements of sound effect and cleaning.

[0077] Exemplary, when simulating the effect of brushing teeth with waves, the frequency domain time series data in the sound of the waves can be extracted, the relationship between the motor motion amplitude (vibration source signal) and the energy injection (voltage source signal) in the matching frequency change can be adjusted to lower the energy in the large motion amplitude interval, and to increase the energy in the small motion amplitude interval, taking into account the appropriate range of the motion amplitude, and obtaining a richer working frequency range, so as to express more sound layers. In addition, the pressure of the real-time toothbrush contacting the teeth can be obtained according to the pressure amplitude sensor data inside the toothbrush, and the energy injection can be controlled according to the pressure. The amplitude of the movement is adjusted, and the energy injection is reduced under extremely low pressure to avoid empty brushing, and the energy injection is reduced under extremely high pressure to avoid the impact of excessive resistance and damage to the teeth. The energy injection is adjusted within an appropriate pressure range to produce an automatic tuning effect in which the volume changes with the pressure. It is also possible to obtain the intensity adjustment parameter by adjusting the input path such as the adjustment button, knob, touch screen or touch bar, and the energy injection can also be adjusted by the intensity adjustment parameter to produce a tuning effect that changes with the intensity adjustment parameter.

[0078] This embodiment adopts a dual control source, and records the motor movement amplitude of each time segment through the motor movement amplitude sensor inside the electric toothbrush, generates a synchronous voltage compensation adjustment curve (equivalent to the frequency characteristic compensation curve) according to the movement amplitude, reduces the control voltage in the large movement amplitude range, and generates synchronous voltage control data, so that the voltage driven by the motor is affected by the synchronous adjustment of the voltage control data, and after measuring the motor movement amplitude of different time segments based on the audio file (i.e., audio signal), the voltage control curve data (i.e., driving voltage amplitude) that is synchronously adjusted with the audio file is generated according to the measured motor movement amplitude data. The voltage control curve data synchronously adjusts the driving voltage (second voltage source signal), so that the high movement amplitude segment is effectively reduced by lowering the driving voltage, and the high frequency response of the motor is obtained. The low-frequency signal is effectively constrained by the maximum movement amplitude through the voltage adjustment curve. At high frequency, the motor movement amplitude is increased to meet the cleaning conditions, and at low frequency, the motor movement amplitude is reduced to not exceed the maximum amplitude requirement, so as to protect the motor and the user's teeth.

[0079] By increasing the driving power, the motor can work at a higher power under high-frequency control signals and work at normal or lower power under low-frequency control signals, so as to obtain a higher motor frequency response, that is, the highest operating frequency that meets the cleaning requirements is increased. Thus, under the condition of a wider frequency response range, the frequency range required by music expression is covered, so that the music can be used to drive the motor to move directly to obtain cleaning power, while having better sound effects.

[0080] By utilizing the time series combination of the mixed midrange / bass and treble, the midrange / bass drive motor obtains a high movement amplitude while the treble signal generates movement disturbance, and the motor's movement inertia is used reasonably to meet the requirements of both cleaning and music. The movement of the motor directly generates mechanical waves of sound without the need for other parts such as speakers or bone conduction vibrators. The motor is de-single-frequencyed to avoid resonance with human organs.

[0081] On the basis of the above embodiments, an interactive electric toothbrush form can be adopted. For example, the motor is directly driven by sound, so that the motor produces direct interactive feedback, expresses the sound and maintains the cleaning power at the same time. Exemplarily, the new interactive expression can replace voice and text expressions through sound. For example, when brushing in the morning, you need to express the weather forecast, you can directly use the sound expression of the weather without or less language (avoiding the problem of inconvenience caused by inconsistent languages ​​in different countries), that is, today is a thunderstorm, and thunder and rain are used to express it directly. Today is sunny, and birds and insects are used directly. It is also possible to directly generate the voice of memorizing words through the motor according to the needs of students' learning. For specific enthusiasts, such as car lovers, the electric toothbrush is driven by the roar of the car engine. For business awareness, a toothbrush can be used to play today's schedule / news hotspots, etc.

[0082] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0083] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for an electric toothbrush, characterized in that: Generate a first voltage source signal according to a preset first data time sequence; Generate a first vibration source signal according to a preset second data time series; driving a motor of the electric toothbrush to operate based on the first voltage source signal and the first vibration source signal, and generating a third data time series; adjusting the first data time series according to the third data time series; generating a second voltage source signal according to the adjusted first data time series; The motor of the electric toothbrush is driven to operate based on the second voltage source signal and the first vibration source signal.

2. The control method of the electric toothbrush according to claim 1, characterized in that: The step of driving the motor of the electric toothbrush to operate based on the first voltage source signal and the first vibration source signal and generating the third data time series includes: generating a first frequency response curve based on the first voltage source signal and the first vibration source signal; generating a frequency characteristic compensation curve according to the target frequency response characteristic of the motor and the first frequency response curve; The third data time series is obtained based on the frequency characteristic compensation curve.

3. The control method of the electric toothbrush according to claim 2, characterized in that: The step of generating a frequency characteristic compensation curve according to the target frequency response characteristic of the motor and the first frequency response curve comprises: Obtaining a target frequency response characteristic of the motor; adjusting the amplitude within a preset segment of the first frequency response curve according to the amplitude of the target frequency response characteristic of the motor; The frequency characteristic compensation curve is obtained according to the adjustment process of the first frequency response curve.

4. The control method of the electric toothbrush according to claim 3, characterized in that: The adjusting the amplitude within a preset segment of the first frequency response curve comprises: Obtaining the natural frequency of the motor according to the target frequency response characteristics of the motor; When the frequency of the target frequency response characteristic of the motor is greater than the natural frequency, comparing the amplitude of the first frequency response curve with the amplitude of the target frequency response characteristic; When the amplitude of the first frequency response curve is smaller than the amplitude of the target frequency response characteristic, the amplitude of the corresponding frequency in the first frequency response curve is increased.

5. The control method of the electric toothbrush according to claim 1, characterized in that: The adjusting the first data time series according to the third data time series comprises: The preset segment of the first data time series is superimposed with the amplitude of the third data time series at the corresponding moment to obtain the adjusted first data time series.

6. The control method of the electric toothbrush according to claim 1, characterized in that: Generating a second voltage source signal according to the adjusted first data time series includes: Acquiring a driving voltage amplitude of a preset segment in the adjusted first data time series; The second voltage source signal is obtained according to the driving voltage amplitude.

7. The control method of the electric toothbrush according to claim 1, characterized in that: The step of generating a first vibration source signal according to a preset second data time series includes: Decoding according to the second data time series; Power amplification is performed based on the decoded second data time series.

8. The control method of the electric toothbrush according to claim 7, characterized in that: The second data time series is an audio signal.

9. The control method of the electric toothbrush according to claim 1, characterized in that: Before generating the first voltage source signal according to the preset first data time sequence and generating the first vibration source signal according to the preset second data time sequence, the method includes: The timestamps of the first data time series are aligned with the timestamps of the second data time series.

10. An electric toothbrush, characterized in that: The electric toothbrush comprises a processor module, a power amplifier module, a power supply regulating module, a motor, an amplitude sensor, a toothbrush handle and a toothbrush head; the processor module is connected to the power amplifier module, the power supply regulating module and the amplitude sensor, and the motor is connected to the power amplifier module, the power supply regulating module and the amplitude sensor; The processor module, the power amplifier module, the power supply regulation module, the motor and the amplitude sensor are arranged inside the toothbrush handle, the toothbrush head is connected to the toothbrush handle, and the toothbrush head is electrically connected to the motor. The motor is used to drive the toothbrush head to generate a first swing amplitude at different frequencies according to an audio signal, and generate a target driving voltage corresponding to the audio signal according to the target swing amplitude and the first swing amplitude. The motor is also used to drive the toothbrush head to vibrate according to the audio signal and the target driving voltage, and the amplitude difference of the vibration operation in the high frequency zone and the low frequency zone is within a preset range.

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