Control method and control device of electric toothbrush and electric toothbrush

Abstract

The invention discloses a control method and device of an electric toothbrush and the electric toothbrush, and relates to the technical field of electric toothbrushes. The electric toothbrush comprises a motor, a driving circuit used for driving the motor and a key triggering device used for switching working modes of the motor, and the control method comprises the steps that a key triggering signal output by the key triggering device is responded, and a target driving mode corresponding to the motor is confirmed based on the key triggering signal; and under the condition that the target driving mode is a preset driving mode, determining a target driving gear corresponding to the motor based on the duration of the key trigger signal so as to adjust a driving signal output to the driving circuit, and enabling the working power of the motor to be within a preset power range corresponding to the target driving gear when the motor works. The invention aims to improve the flexibility of the electric toothbrush.

Description

Technical Field

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

[0002] An electric toothbrush uses the motor's power output shaft to rapidly rotate or vibrate, generating high-frequency vibrations in the brush head. This instantly breaks down toothpaste into fine foam, deeply cleaning between teeth. Simultaneously, the vibrations of the bristles promote blood circulation in the mouth and massage the gums. Currently, when using an electric toothbrush, the user grips the handle and inserts the brush head into the mouth, allowing the bristles to contact the teeth for cleaning.

[0003] In order to meet the diverse needs of users, a variety of different working modes are often set. However, in actual applications, these working modes still have the problem of not covering the needs of users. Summary of the Invention

[0004] The main purpose of the present invention is to provide a control method, a control device and an electric toothbrush, aiming to improve the flexibility of the electric toothbrush.

[0005] To achieve the above-mentioned object, the present invention proposes a control method for an electric toothbrush, which is applied to an electric toothbrush. The electric toothbrush includes a motor, a drive circuit for driving the motor, and a key trigger device for switching the motor operating mode. The control method includes:

[0006] responding to a key trigger signal output by the key trigger device and determining a target driving mode corresponding to the motor based on the key trigger signal;

[0007] When the target driving mode is a preset driving mode, the target driving gear corresponding to the motor is confirmed based on the duration of the button trigger signal to adjust the driving signal output to the driving circuit so that the working power of the motor during operation is within the preset power range corresponding to the target driving gear.

[0008] In one embodiment, the button trigger device further includes a mode switching component and a power-on trigger component, wherein the mode switching component is configured to output a mode switching signal when triggered, and the power-on trigger component is configured to output a power-on signal when triggered; wherein the button trigger signal includes a power-on signal and a mode switching signal; the electric toothbrush has a plurality of drive modes preset corresponding to the motor, and the plurality of drive modes are arranged in a first order; the step of responding to the button trigger signal output by the button trigger device and confirming the target drive mode corresponding to the motor based on the button trigger signal is specifically as follows:

[0009] In response to a power-on signal, confirming that a current driving mode is the target driving mode;

[0010] In response to the mode switching signal, a driving mode subsequent to the current driving mode is identified as the target driving mode according to the first order.

[0011] In one embodiment, the preset driving mode includes a plurality of driving gears, and the plurality of driving gears are arranged in a second order; when the target driving mode is the preset driving mode, the step of determining the target driving gear corresponding to the motor based on the duration of the key trigger signal is specifically:

[0012] When the first target driving mode is a preset driving mode and the duration of the mode switching signal is equal to the corresponding preset duration, the driving gear following the current driving gear is confirmed as the target driving gear according to the second sequence.

[0013] In one embodiment, the drive signal is a PWM signal, and the steps of determining a target drive gear corresponding to the motor based on the duration of the key trigger signal and adjusting the drive signal output to the drive circuit so that the operating power of the motor during operation is within a preset power range corresponding to the target drive gear are specifically as follows:

[0014] Determining a target drive gear corresponding to the motor based on the duration of the key trigger signal to determine a duty cycle of the drive signal;

[0015] The duty cycle of the drive signal is adjusted to a target duty cycle so that the operating power of the motor is within a preset power range corresponding to the target drive gear.

[0016] In one embodiment, the duration of the key trigger signal is directly proportional to the duty cycle of the driving signal.

[0017] In one embodiment, the driving signal is a PWM signal, and the electric toothbrush further includes a battery and a voltage detection device for detecting the output voltage of the battery. After the step of determining the target driving gear corresponding to the motor based on the duration of the key trigger signal, the control method includes:

[0018] confirming the output voltage of the battery based on the voltage detection signal output by the voltage detection device;

[0019] Based on the output voltage of the battery and the target drive gear corresponding to the motor, the duty cycle of the drive signal output to the drive circuit is adjusted to the target duty cycle, so that the working power of the motor during operation is within the preset power range corresponding to the target drive gear.

[0020] In one embodiment, the output voltage of the battery is inversely proportional to the target duty cycle.

[0021] In one embodiment, the electric toothbrush further includes a prompting device, and the method further includes:

[0022] The prompt device is controlled to operate according to the target driving mode and the target driving gear.

[0023] The present invention also proposes a control device, which includes: a memory, a processor, and an electric toothbrush control program stored in the memory and running on the processor, wherein the electric toothbrush control program is configured to implement the steps of the electric toothbrush control method as described in any one of the above items.

[0024] The present invention also provides an electric toothbrush, comprising the control device according to claim 9, and

[0025] Battery;

[0026] Motor;

[0027] a drive circuit, wherein a controlled end of the drive circuit is electrically connected to the control device, and an output end of the drive circuit is electrically connected to a power supply end of the motor; the drive circuit is used to adjust the operating power of the motor according to the drive signal output by the control device;

[0028] A key trigger device, wherein the output end of the key trigger device is electrically connected to the control device; the key trigger device is configured to output a key trigger signal when triggered;

[0029] a voltage detection device, wherein the input end of the voltage detection device is electrically connected to the output end of the battery, and the output end of the voltage detection device is electrically connected to the control device; the voltage detection device is used to detect the output voltage of the battery and output a corresponding voltage detection signal;

[0030] A prompt device, the input end of which is electrically connected to the control device; the prompt device is used to receive the prompt control signal output by the control device and output a corresponding prompt signal.

[0031] The technical solution of the present invention is to set a key trigger device for switching the working mode of the motor in the electric toothbrush, so that when the key trigger device is triggered by the user, a key trigger signal is output. The key trigger signal output by the key trigger device confirms the corresponding target drive mode that the motor needs to execute. At this time, the motor will switch to different working modes in sequence under the output of the key trigger signal. When the target drive mode corresponding to the motor is a preset drive mode, the control device will further confirm the drive gear that the motor needs to execute in this drive mode based on the duration of the key trigger signal. The control device adjusts the drive signal output to the drive circuit by receiving the key trigger signal, so that the working power of the motor during operation is within the preset power range corresponding to the target drive gear. The preset power range is the power range of the preset drive mode and also the power range of different target drive gears. In this way, the flexibility of the electric toothbrush can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0033] Figure 1 Schematic diagram of the flow of the control method of the electric toothbrush of the present invention;

[0034] Figure 2 This is a flow chart of an embodiment of a method for controlling an electric toothbrush according to the present invention;

[0035] Figure 3 This is a flow chart of another embodiment of the control method of the electric toothbrush of the present invention;

[0036] Figure 4 FIG. 4 is a flow chart of another embodiment of a method for controlling an electric toothbrush according to the present invention.

[0037] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] An electric toothbrush uses the motor's power output shaft to rapidly rotate or vibrate, generating high-frequency vibrations in the brush head. This instantly breaks down toothpaste into fine foam, deeply cleaning between teeth. Simultaneously, the vibrations of the bristles promote blood circulation in the mouth and massage the gums. Currently, when using an electric toothbrush, the user grips the handle and inserts the brush head into the mouth, allowing the bristles to contact the teeth for cleaning.

[0042] In order to meet the diverse needs of users, a variety of different working modes are often set. However, in actual applications, these working modes still have the problem of not covering the needs of users.

[0043] Therefore, reference Figure 1 The present invention provides a control method for an electric toothbrush, which is applied to an electric toothbrush. The electric toothbrush includes a motor, a driving circuit for driving the motor, and a key trigger device for switching the motor working mode. The control method includes:

[0044] Step S100: responding to a key trigger signal output by the key trigger device and confirming a target driving mode corresponding to the motor based on the key trigger signal;

[0045] Step S200: When the target driving mode is a preset driving mode, the target driving gear corresponding to the motor is confirmed based on the duration of the button trigger signal to adjust the driving signal output to the driving circuit so that the working power of the motor during operation is within the preset power range corresponding to the target driving gear.

[0046] In this embodiment, the button triggering mechanism can be implemented using a mechanical pressing component, an inductive triggering component, or a piezoelectric effect component. The mechanical pressing component closes or opens a circuit by pressing and releasing a physical button, thereby achieving the triggering function. The inductive triggering component uses a capacitive or resistive touch sensor to detect the user's touch operation. The piezoelectric effect component generates a voltage change when subjected to pressure, outputting a corresponding button triggering signal. The surface of the electric toothbrush body is provided with at least one trigger button, which the user can trigger to turn the electric toothbrush on and switch modes. Depending on actual needs, the electric toothbrush can have multiple drive modes, which can be switched one-to-one using multiple trigger buttons, or continuously switched by continuously triggering a single trigger button. For example, an electric toothbrush can have five drive modes: easy-to-use mode, fast cleaning mode, deep stain removal mode, gum massage mode, and personalized mode. The different drive modes are designed to meet the diverse oral cleaning needs and sensitivity of users. Furthermore, the user can input a mode trigger signal through the trigger button set on the surface of the electric toothbrush, so that the electric toothbrush can confirm the target driving mode corresponding to the motor according to the mode trigger signal, so that the motor can work according to the driving signal corresponding to the mode trigger signal.

[0047] It is understandable that the preset drive mode is a personalized customized mode. Among them, the preset drive mode has multiple drive modes with different gears, and the multiple drive modes with different gears correspond to different motor speeds. When the user selects the target drive mode as the preset drive mode through a key trigger signal, the control device will determine the target drive gear that the user needs to select based on the input duration of the key trigger signal in this mode. Furthermore, the user can intermittently trigger the key trigger device so that the key trigger device intermittently outputs the key trigger signal. The control device switches the drive signal output to the drive circuit by receiving the intermittent key trigger signal, so that the motor executes the corresponding target drive mode under the drive of the drive circuit. The user continuously triggers the key trigger device so that the key trigger device continuously outputs the key trigger signal. The control device switches the drive gears included in the preset drive mode in sequence according to a preset order by receiving the continuous key trigger signal. For example, when the motor is in a preset driving mode, if the user continuously triggers the button trigger device for 1 second and then stops triggering it, the control device will output a first driving signal to the driving circuit, so that the driving circuit drives the motor to work according to the first driving signal; if the user continuously triggers the button trigger device for 2 seconds and then stops triggering it, the control device will output a second driving signal to the driving circuit, so that the driving circuit drives the motor to work according to the second driving signal.

[0048] By setting a button trigger device for switching the working mode of the motor in the electric toothbrush, it is possible to output a button trigger signal when the button trigger device is triggered by the user. The button trigger signal output by the button trigger device confirms the corresponding target drive mode that the motor needs to execute. At this time, the motor will switch to different working modes in sequence under the output of the button trigger signal. In the case that the target drive mode corresponding to the motor is a preset drive mode, the control device will further confirm the drive gear that the motor needs to execute in this drive mode based on the duration of the button trigger signal. The control device adjusts the drive signal output to the drive circuit by receiving the button trigger signal, so that the working power of the motor during operation is within the preset power range corresponding to the target drive gear. The preset power range is the power range of the preset drive mode and also the power range of different target drive gears. In this way, the flexibility of the electric toothbrush can be effectively improved.

[0049] refer to Figure 2 In one embodiment of the present invention, the button trigger device further includes a mode switching component and a power-on trigger component, wherein the mode switching component is configured to output a mode switching signal when triggered, and the power-on trigger component is configured to output a power-on signal when triggered; wherein the button trigger signal includes a power-on signal and a mode switching signal; the electric toothbrush has a plurality of drive modes preset corresponding to the motor, and the plurality of drive modes are arranged in a first order; the step of responding to the button trigger signal output by the button trigger device and determining the target drive mode corresponding to the motor based on the button trigger signal is specifically as follows:

[0050] Step S110: In response to the power-on signal, confirming that the current driving mode is the target driving mode;

[0051] Step S120 : In response to the mode switching signal, according to the first sequence, confirming the next driving mode after the current driving mode as the target driving mode.

[0052] In this embodiment, the surface of the electric toothbrush body is provided with at least two types of trigger buttons: a power-on trigger button and a mode switch button, corresponding to the power-on trigger assembly and the mode switch assembly, respectively. It will be understood that the two types of trigger buttons on the surface of the electric toothbrush body correspond to the power on / off function and the mode switch function, respectively. Therefore, the mode trigger signal includes a working power-on signal and a mode switch signal. The power-on trigger button can be repeatedly triggered to switch between the power-on and power-off modes. Multiple trigger buttons can be provided for the mode switch function, each corresponding to a different drive mode. Alternatively, a single trigger button can be provided for the mode switch function, and multiple triggering of the single trigger button can be used to sequentially switch drive modes. Specifically, the power-on trigger assembly receives the working power-on signal, which is input into the control device, causing it to execute the drive mode last executed when the electric toothbrush was previously turned off, i.e., a mode memory function. The control device then executes the first drive mode, which was the last drive mode executed when the electric toothbrush was previously turned off. When the mode switch button is not triggered, only the power-on trigger button is triggered, and the electric toothbrush will drive the motor to work in the drive mode that was last executed when the electric toothbrush was turned off. When the power-on trigger button is triggered, the mode switch button is triggered, and the control device will obtain the mode switch signal, and then switch the mode according to the first sequence, that is, switch from the first drive mode to the second drive mode, so that the motor works according to the second drive mode, and confirm the mode as the target drive mode. For example, the drive mode that was last executed when the electric toothbrush was turned off was the deep stain removal mode, that is, the deep stain removal mode is the first drive mode; when the power-on trigger button is triggered, the mode switch button is triggered, and the control device switches the deep stain removal mode to the gum massage mode according to the preset mode switching sequence, that is, the normal drive mode is the second drive mode.

[0053] In one embodiment of the present invention, the preset driving mode includes a plurality of driving gears, and the plurality of driving gears are arranged in a second order; when the target driving mode is the preset driving mode, the step of determining the target driving gear corresponding to the motor based on the duration of the key trigger signal is specifically as follows:

[0054] When the first target driving mode is a preset driving mode and the duration of the mode switching signal is equal to the corresponding preset duration, the driving gear following the current driving gear is confirmed as the target driving gear according to the second sequence.

[0055] In this embodiment, the preset drive mode includes multiple drive gears. Each drive gear corresponds to a different motor speed, meaning that the control device will output a different drive signal to the drive circuit. The multiple drive gears in the preset drive mode are arranged in a second order. The second order can be arranged from smallest to largest based on the motor speeds corresponding to the multiple drive gears. It is understood that the duration of the mode switching signal corresponding to each drive gear is different. For example, the preset drive mode includes six different drive gears, and these six different drive gears are arranged from smallest to largest based on the motor speeds corresponding to them. If the mode switching signal lasts for one second, the control device will output the corresponding drive signal to the drive circuit, causing the drive circuit to drive the motor in the first gear. If the mode switching signal lasts for two seconds, the control device will output the corresponding drive signal to the drive circuit, causing the drive circuit to drive the motor in the second gear. If the mode switching signal lasts for six seconds, the control device will output the corresponding drive signal to the drive circuit, causing the drive circuit to drive the motor in the sixth gear. It is understandable that when the mode switching signal lasts for 7 seconds, the control device will output a corresponding drive signal to the drive circuit, so that the drive circuit drives the motor to operate according to the first gear again.

[0056] Optionally, refer to Figure 3 , the drive signal is a PWM signal, and the steps of determining the target drive gear corresponding to the motor based on the duration of the key trigger signal to adjust the drive signal output to the drive circuit so that the working power of the motor during operation is within a preset power range corresponding to the target drive gear are specifically as follows:

[0057] Step S210: confirming the target drive gear corresponding to the motor based on the duration of the key trigger signal to determine the duty cycle of the drive signal;

[0058] Step S220: adjusting the duty cycle of the driving signal to a target duty cycle so that the operating power of the motor is within a preset power range corresponding to the target driving gear.

[0059] In this embodiment, the motor can be driven using PWM signal control, direct voltage control, resistance control, current chopping control, and other methods. For example, if the motor drive signal is a PWM signal, the motor drive mode can be switched and controlled by changing the duty cycle and output frequency of the PWM signal. For example, a preset drive mode includes six different drive gears, which are arranged in ascending order based on the corresponding motor speed. When the mode switching signal lasts for one second, the control device outputs a PWM signal with a duty cycle of 30% to the drive circuit, causing the drive circuit to drive the motor in the first gear. When the mode switching signal lasts for two seconds, the control device outputs a PWM signal with a duty cycle of 40% to the drive circuit, causing the drive circuit to drive the motor in the second gear. When the mode switching signal lasts for six seconds, the control device outputs a PWM signal with a duty cycle of 90% to the drive circuit, causing the drive circuit to drive the motor in the sixth gear. It is understandable that when the mode switching signal lasts for 7 seconds, the control device will output a PWM signal with a duty cycle of 30% to the drive circuit, so that the drive circuit will drive the motor to work according to the first gear again. Therefore, the duration of the button trigger signal is directly proportional to the duty cycle of the drive signal. It is understandable that there may be some errors in actual applications corresponding to each target drive gear. Therefore, the preset power of the motor for each target drive gear fluctuates within a certain range. For example, when the control device outputs a PWM signal with a duty cycle of 90% to the drive circuit, so that the drive circuit drives the motor to work according to the sixth gear, the working power of the motor may be equivalent to the working power when the control device outputs a PWM signal with a duty cycle of 87% to the drive circuit.

[0060] refer to Figure 4 In one embodiment of the present invention, the driving signal is a PWM signal, and the electric toothbrush further includes a battery and a voltage detection device for detecting the output voltage of the battery. After the step of determining the target driving gear corresponding to the motor based on the duration of the key trigger signal, the control method includes:

[0061] Step S230: confirming the output voltage of the battery based on the voltage detection signal output by the voltage detection device;

[0062] Step S240: Based on the output voltage of the battery and the target drive gear corresponding to the motor, the duty cycle of the drive signal output to the drive circuit is adjusted to the target duty cycle, so that the working power of the motor during operation is within the preset power range corresponding to the target drive gear.

[0063] It's understandable that when a battery is used to power the motor, the battery's internal voltage gradually decreases due to continuous power supply, which in turn reduces the motor's supply voltage. This reduction in motor supply voltage leads to a decrease in motor speed, which in turn causes the motor's speed to become unstable, preventing users from enjoying a good user experience when using the electric toothbrush. Therefore, to ensure a relatively stable motor speed, it's necessary to ensure that the motor's operating power remains relatively stable, i.e., limit the motor's operating power to a preset power range. It's important to understand that electric toothbrushes typically use a DC motor to drive the pump. These DC motors are typically driven by a PWM signal that adjusts the average voltage supplied to the motor, thereby controlling the motor's speed. By varying the pulse width—that is, the ratio of the high-level duration to the total cycle—fine-tuning the motor's speed can be achieved without changing the supply voltage. However, the battery's internal voltage constantly decreases due to the operation of the electric toothbrush. If the pulse width of the PWM signal driving the DC voltage is not varied, the motor's speed will decrease. The battery's output voltage is also the motor's supply voltage. Therefore, to ensure that the motor's speed is in a relatively stable state, it is necessary to increase the ratio of the high-level duration to the total cycle, that is, to adjust the drive signal output to the drive circuit through the output voltage of the battery, so that the operating power of the motor during operation remains within the preset power range corresponding to the target drive mode. The determination of the battery output voltage needs to be achieved through a voltage detection circuit. Furthermore, the motor's speed is also related to the motor's drive mode. The motor's speed is also different for different drive modes. For example, when the electric toothbrush is in easy-to-use mode, the motor's speed is relatively slow; when the electric toothbrush is in deep stain removal mode, the motor's speed is relatively fast. Therefore, it is also necessary to adjust the motor's drive signal according to the motor's drive mode.

[0064] In this embodiment, the drive signal controls the motor's operating power, thereby controlling the motor's speed and switching. It is understandable that the drive signal will directly act on the drive circuit, and by controlling the drive circuit, it will control the battery's power supply to the motor. Furthermore, the drive circuit can be implemented using multiple switching circuits, and the switching circuit can be implemented using, for example, MOS tubes, IGBT tubes, thyristors, triodes, power tubes, etc. The electric toothbrush controls the conduction or disconnection of the switching circuit by outputting a corresponding PWM signal through the control device, thereby changing the motor's operating power, and then changing the motor's speed, starting or stopping.

[0065] In this embodiment, the desired drive mode for the motor is determined by obtaining a mode trigger signal, and the output voltage of the battery in the electric toothbrush is obtained. The desired drive mode is then used as the target for the motor. By establishing a relationship between the battery output voltage and the drive signal that drives the motor, the drive signal is adjusted when the battery output voltage changes, ensuring that the motor's operating power remains relatively stable, thereby ensuring that the electric toothbrush remains relatively stable in a given drive mode.

[0066] In this embodiment, the voltage detection device can be implemented using a voltage detection circuit, which can be implemented using a resistor voltage divider sampling circuit, a linear operational amplifier voltage sampling circuit, a voltage sampling transformer, or the like. The electric toothbrush uses the voltage detection signal output by the voltage detection circuit to determine the output voltage of the battery in the electric toothbrush, i.e., the power supply voltage for the motor. The control device, using a built-in analog-to-digital conversion module, converts the input voltage detection signal into a corresponding voltage value, thereby determining the output voltage of the battery. It is understood that the output voltage of the battery directly affects the operating power of the electric toothbrush motor. Therefore, the control device includes a preset correspondence between the output voltage of the battery and the drive signal that drives the motor. Furthermore, the desired drive mode of the motor must also be considered. Furthermore, it is understood that the motor can be driven using methods such as PWM signal control, direct voltage control, resistor control, and current chopping control. For example, if the motor drive signal is a PWM signal, the motor drive mode can be switched and controlled by varying the duty cycle and output frequency of the PWM signal. It's easy to understand that as the electric toothbrush continues to operate, the battery's output voltage will gradually decrease, meaning the motor's supply voltage will also gradually decrease. Increasing the PWM signal's duty cycle means that the proportion of high levels increases within a PWM cycle. Although the voltage of a single pulse remains at the reduced battery output voltage, the longer the high level duration, the effective average voltage across the motor will increase. This increases the motor's average input power without significantly increasing the instantaneous current, thereby maintaining the motor's speed. Specifically, for different drive modes, the corresponding PWM duty cycle varies for the same supply voltage. The voltage value corresponding to the voltage detection signal is inversely proportional to the duty cycle of the PWM signal driving the motor. That is, the greater the voltage value corresponding to the voltage detection signal, the smaller the duty cycle of the PWM signal driving the motor; and the smaller the voltage value corresponding to the voltage detection signal, the larger the duty cycle of the PWM signal driving the motor.

[0067] In one embodiment of the present invention, the electric toothbrush further includes a prompting device, and the method further includes:

[0068] The prompt device is controlled to operate according to the target driving mode and the target driving gear.

[0069] In this embodiment, to facilitate the user's intuitive understanding of the current status of the electric toothbrush (e.g., whether the electric toothbrush is turned on, the drive mode the electric toothbrush is in, the battery level of the electric toothbrush, etc.), the electric toothbrush is also provided with multiple prompt circuits. The multiple prompt circuits can be configured as LED prompt circuits, whose input ends are respectively electrically connected to the control device. When the control device receives the work start signal and / or the mode switching signal, the control device outputs a prompt control signal to the prompt circuit, thereby causing the prompt circuit to output the prompt signal. For example, when the control device receives the work start signal output by the power-on trigger circuit, it outputs a prompt control signal to the prompt circuit corresponding to whether the electric toothbrush is turned on. Furthermore, to enable the user to more clearly understand the current status of the electric toothbrush corresponding to each prompt circuit, corresponding text prompts are etched or printed on the surface of the electric toothbrush body. When the control device receives the mode switching signal output by the mode switching circuit, it outputs a prompt control signal to the prompt circuit corresponding to the drive mode of the electric toothbrush. It is understood that the number of electric toothbrush drive modes corresponds to the number of corresponding prompt circuits, so that each prompt circuit corresponds to each drive mode. The prompt circuit may also use light emitting diodes of various colors to indicate various driving modes.

[0070] The present invention also proposes a control device, which includes: a memory, a processor, and an electric toothbrush control program stored in the memory and running on the processor, wherein the electric toothbrush control program is configured to implement the steps of the electric toothbrush control method as described in any one of the above items.

[0071] The control device can be implemented using a main controller, such as a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array), an MCU (Microcontroller Unit), or a SOC (System On Chip).

[0072] It is worth noting that since the control device of the present invention is based on the above-mentioned control method of the electric toothbrush, the embodiments of the control device of the present invention include all technical solutions of all embodiments of the above-mentioned control method of the electric toothbrush, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0073] The present invention also provides an electric toothbrush, characterized in that the electric toothbrush includes the control device as described above, and

[0074] Battery;

[0075] Motor;

[0076] a drive circuit, wherein a controlled end of the drive circuit is electrically connected to the control device, and an output end of the drive circuit is electrically connected to a power supply end of the motor; the drive circuit is used to adjust the operating power of the motor according to the drive signal output by the control device;

[0077] A key trigger device, wherein the output end of the key trigger device is electrically connected to the control device; the key trigger device is configured to output a key trigger signal when triggered;

[0078] a voltage detection device, wherein the input end of the voltage detection device is electrically connected to the output end of the battery, and the output end of the voltage detection device is electrically connected to the control device; the voltage detection device is used to detect the output voltage of the battery and output a corresponding voltage detection signal;

[0079] A prompt device, the input end of which is electrically connected to the control device; the prompt device is used to receive the prompt control signal output by the control device and output a corresponding prompt signal.

[0080] It is worth noting that since the battery module of the present invention is based on the above-mentioned battery management circuit or battery control board, the embodiments of the battery module of the present invention include all technical solutions of all embodiments of the above-mentioned battery management circuit or battery control board, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0081] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A control method for an electric toothbrush, applied to an electric toothbrush, characterized in that: The electric toothbrush includes a motor, a driving circuit for driving the motor, and a key trigger device for switching the motor working mode. The control method includes: responding to a key trigger signal output by the key trigger device and determining a target driving mode corresponding to the motor based on the key trigger signal; When the target driving mode is a preset driving mode, the target driving gear corresponding to the motor is confirmed based on the duration of the button trigger signal to adjust the driving signal output to the driving circuit so that the working power of the motor during operation is within the preset power range corresponding to the target driving gear.

2. The control method of the electric toothbrush according to claim 1, characterized in that: The button trigger device further includes a mode switching component and a power-on trigger component. The mode switching component is configured to output a mode switching signal when triggered, and the power-on trigger component is configured to output a power-on signal when triggered. The button trigger signal includes a power-on signal and a mode switching signal. The electric toothbrush has a plurality of drive modes preset corresponding to the motor, and the plurality of drive modes are arranged in a first order. The steps of responding to the button trigger signal output by the button trigger device and confirming the target drive mode corresponding to the motor based on the button trigger signal are specifically as follows: In response to a power-on signal, confirming that a current driving mode is the target driving mode; In response to the mode switching signal, a driving mode subsequent to the current driving mode is identified as the target driving mode according to the first order.

3. The control method of the electric toothbrush according to claim 2, characterized in that: The preset driving mode includes a plurality of driving gears, and the plurality of driving gears are arranged in a second order; when the target driving mode is the preset driving mode, the step of determining the target driving gear corresponding to the motor based on the duration of the key trigger signal is specifically as follows: When the first target driving mode is a preset driving mode and the duration of the mode switching signal is equal to the corresponding preset duration, the driving gear following the current driving gear is confirmed as the target driving gear according to the second sequence.

4. The control method of the electric toothbrush according to claim 1, wherein: The drive signal is a PWM signal. The steps of determining a target drive gear corresponding to the motor based on the duration of the key trigger signal and adjusting the drive signal output to the drive circuit so that the operating power of the motor during operation is within a preset power range corresponding to the target drive gear are specifically as follows: Determining a target drive gear corresponding to the motor based on the duration of the key trigger signal to determine a duty cycle of the drive signal; The duty cycle of the drive signal is adjusted to a target duty cycle so that the operating power of the motor is within a preset power range corresponding to the target drive gear.

5. The control method of the electric toothbrush according to claim 4, characterized in that: The duration of the key trigger signal is directly proportional to the duty cycle of the drive signal.

6. The control method of the electric toothbrush according to claim 1, characterized in that: The driving signal is a PWM signal, and the electric toothbrush further includes a battery and a voltage detection device for detecting the output voltage of the battery. After the step of determining the target driving gear corresponding to the motor based on the duration of the key trigger signal, the control method includes: confirming the output voltage of the battery based on the voltage detection signal output by the voltage detection device; Based on the output voltage of the battery and the target drive gear corresponding to the motor, the duty cycle of the drive signal output to the drive circuit is adjusted to the target duty cycle, so that the working power of the motor during operation is within the preset power range corresponding to the target drive gear.

7. The control method of the electric toothbrush according to claim 6, characterized in that: The output voltage of the battery is inversely proportional to the target duty cycle.

8. The control method of the electric toothbrush according to claim 1, wherein: The electric toothbrush further includes a prompting device, and the method further includes: The prompt device is controlled to operate according to the target driving mode and the target driving gear.

9. A control device, characterized in that: The control device includes: a memory, a processor, and an electric toothbrush control program stored in the memory and running on the processor, wherein the electric toothbrush control program is configured to implement the steps of the electric toothbrush control method according to any one of claims 1 to 8.

10. An electric toothbrush, characterized in that: The electric toothbrush comprises the control device according to claim 9, and Battery; Motor; a drive circuit, wherein a controlled end of the drive circuit is electrically connected to the control device, and an output end of the drive circuit is electrically connected to a power supply end of the motor; the drive circuit is used to adjust the operating power of the motor according to the drive signal output by the control device; A key trigger device, wherein the output end of the key trigger device is electrically connected to the control device; the key trigger device is configured to output a key trigger signal when triggered; a voltage detection device, wherein the input end of the voltage detection device is electrically connected to the output end of the battery, and the output end of the voltage detection device is electrically connected to the control device; the voltage detection device is used to detect the output voltage of the battery and output a corresponding voltage detection signal; A prompt device, the input end of which is electrically connected to the control device; the prompt device is used to receive the prompt control signal output by the control device and output a corresponding prompt signal.

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