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 brush head, a motor, a driving circuit used for driving the motor, a PH sensor arranged on the brush head and used for detecting the pH value of the environment of the brush head, and a liquid storage output assembly arranged on the brush head and used for storing and outputting an alkaline solution. The control method of the electric toothbrush comprises the steps that the pH value of the environment where the brush head is located is determined based on a PH detection signal output by the PH sensor; under the condition that the pH value of the environment where the brush head is located is lower than a preset pH value, a driving signal output to the driving circuit is adjusted, so that the working power of a motor is within a preset power range corresponding to the pH value of the environment where the brush head is located; and / or under the condition that the pH value of the environment where the brush head is located is lower than the preset pH value, the liquid storage output assembly is controlled to output the alkaline solution. The invention aims to improve the applicability of the electric toothbrush.

Description

Technical Field

[0001] This invention relates to the field of electric toothbrush technology, and in particular to a control method, control device, and electric toothbrush. Background Technology

[0002] Tooth enamel is the hardest tissue in the human body, primarily composed of hydroxyapatite. However, it is prone to demineralization in acidic environments, meaning that minerals dissolve from the enamel. It is generally believed that demineralization begins when the oral pH falls below 5.5; maintaining a neutral or slightly alkaline pH promotes remineralization, where minerals such as calcium and phosphorus in saliva are redeposited back into the enamel, repairing early damage. In acidic oral conditions, brushing teeth will exacerbate enamel wear. Summary of the Invention

[0003] The main objective of this invention is to provide a control method, control device, and electric toothbrush for electric toothbrushes, aiming to improve the applicability of electric toothbrushes.

[0004] To achieve the above objectives, the present invention proposes a control method for an electric toothbrush, the electric toothbrush comprising a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the brush head environment, and a liquid storage and output component disposed on the brush head for storing and outputting an alkaline solution; the control method for the electric toothbrush includes: Based on the pH detection signal output by the pH sensor, the pH value of the environment in which the brush head is located is confirmed; If the pH value of the environment where the brush head is located is lower than a preset pH value, the drive signal output to the drive circuit is adjusted so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located; and / or, When the pH value of the environment where the brush head is located is lower than the preset pH value, the liquid storage output component is controlled to output an alkaline solution.

[0005] In one embodiment, the electric toothbrush further includes a mode switching component, which outputs a mode switching signal when triggered; the electric toothbrush has multiple preset driving modes corresponding to the motor, and the multiple driving modes are arranged in a first order; before the step of confirming the pH value of the environment where the brush head is located based on the pH detection signal output by the pH sensor, the method further includes: In response to the mode switching signal, the next driving mode after the current driving mode is identified as the target driving mode in the first order.

[0006] In one embodiment, the driving signal is a PWM signal, and the step of adjusting the driving signal output to the driving circuit so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located when the pH value is lower than a preset pH value specifically includes: The target duty cycle of the drive signal is determined based on the difference between the pH value of the environment where the brush head is located and the preset pH value. Adjust the duty cycle of the drive signal to the target duty cycle so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located.

[0007] In one embodiment, the step of adjusting the duty cycle of the drive signal to the target duty cycle further includes: When the motor is in the starting state, the current duty cycle of the drive signal will be adjusted at preset intervals until the duty cycle of the drive signal reaches the target duty cycle.

[0008] In one embodiment, the step of determining the target duty cycle of the drive signal based on the difference between the pH value of the environment where the brush head is located and a preset pH value specifically includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the first preset difference, the target duty cycle of the drive signal is determined to be the first duty cycle. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the second preset difference, the target duty cycle of the drive signal is determined to be the second duty cycle. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a third preset difference, the target duty cycle of the drive signal is determined to be the third duty cycle.

[0009] In one embodiment, the step of controlling the liquid storage output component to output an alkaline solution when the pH value of the environment where the brush head is located is lower than a preset pH value specifically includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the first preset difference, the liquid storage output component is controlled to output a first volume of alkaline solution. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the second preset difference, the liquid storage output component is controlled to output a second volume of alkaline solution. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a third preset difference, the liquid storage output component is controlled to output a third volume of alkaline solution.

[0010] In one embodiment, the electric toothbrush further includes a prompting component for outputting a prompting signal; after the step of confirming the pH value of the environment in which the brush head is located based on the pH detection signal output by the pH sensor, the method further includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a fourth preset difference, the prompting component is controlled to output a prompting signal.

[0011] The present invention also proposes a control device, the control device comprising a memory, a processor, and a control program for an electric toothbrush stored in the memory and executable on the processor, the control program for the electric toothbrush being configured to implement the steps of the control method for an electric toothbrush as described in any of the above-described embodiments.

[0012] The present invention also proposes an electric toothbrush, the electric toothbrush comprising a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the brush head environment, a liquid storage and output component disposed on the brush head for storing and outputting an alkaline solution, and a control device as described above.

[0013] In one embodiment, the electric toothbrush further includes: A mode switching component, electrically connected to the control device; the mode switching component is used to output a mode switching signal when triggered; A prompting component is electrically connected to the control device; the prompting component is used to receive a prompting control signal output by the control device and output a corresponding prompting signal.

[0014] This invention provides a control method for electric toothbrushes, which effectively improves the applicability of electric toothbrushes. The electric toothbrush includes a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the environment around the brush head, and a liquid storage and output component disposed on the brush head for storing and distributing an alkaline solution. The pH sensor outputs a pH detection signal to confirm the pH value of the environment around the brush head; if the pH value of the environment around the brush head is lower than a preset pH value, the drive signal output to the drive circuit is adjusted so that the motor's operating power is within a preset power range corresponding to the pH value of the environment around the brush head; and / or, if the pH value of the environment around the brush head is lower than the preset pH value, the liquid storage and output component is controlled to output an alkaline solution. In this way, the electric toothbrush can avoid damaging teeth when operating in an acidic environment in the user's mouth, and can adaptively adjust its working state according to the specific conditions inside the mouth. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a flowchart illustrating the control method of the electric toothbrush of the present invention; Figure 2 This is a flowchart illustrating an embodiment of the control method for the electric toothbrush of the present invention; Figure 3 This is a flowchart illustrating another embodiment of the control method for the electric toothbrush of the present invention; Figure 4 This is a flowchart illustrating another embodiment of the control method for the electric toothbrush of the present invention.

[0017] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0021] Tooth enamel is the hardest tissue in the human body, primarily composed of hydroxyapatite. However, it is prone to demineralization in acidic environments, meaning that minerals dissolve from the enamel. It is generally believed that demineralization begins when the oral pH falls below 5.5; maintaining a neutral or slightly alkaline pH promotes remineralization, where minerals such as calcium and phosphorus in saliva are redeposited back into the enamel, repairing early damage. In acidic oral conditions, brushing teeth will exacerbate enamel wear.

[0022] To solve the above problems, refer to Figure 1 This invention proposes a control method for an electric toothbrush, the electric toothbrush comprising a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the brush head environment, and a liquid storage and output component disposed on the brush head for storing and outputting an alkaline solution; the control method for the electric toothbrush includes: Step S100: Based on the pH detection signal output by the pH sensor, confirm the pH value of the environment in which the brush head is located; Step S200: When the pH value of the environment where the brush head is located is lower than a preset pH value, adjust the drive signal output to the drive circuit so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located; and / or, Step S300: When the pH value of the environment where the brush head is located is lower than the preset pH value, control the liquid storage output component to output an alkaline solution.

[0023] In this embodiment, the surface of the electric toothbrush body is provided with at least one trigger button, which the user can trigger to turn on the electric toothbrush and switch modes. Depending on actual needs, the electric toothbrush can be set to multiple driving modes, and these modes can be switched one-to-one via multiple trigger buttons, or by continuously triggering a single button. For example, the electric toothbrush can have three driving modes: normal, gentle, and pulse, with different modes designed to meet the diverse oral cleaning needs and sensitivity levels of users. Furthermore, in this application's technical solution, the electric toothbrush also includes an adaptive mode, meaning the electric toothbrush can automatically adjust its operating state according to the actual conditions inside the user's mouth.

[0024] In this embodiment, the pH sensor can be implemented using an ion-sensitive field-effect transistor (FET) pH sensor or a solid-state reference electrode combined with a polymer film electrode. The ion-sensitive FET pH sensor utilizes an insulating layer whose gate is sensitive to ions; changes in ion concentration cause a threshold voltage drift, thus measuring the pH. By placing the pH sensor on the brush head of the electric toothbrush, the pH level of the user's oral cavity is detected during toothbrush use, and a corresponding pH detection signal is output. This allows the control device in the electric toothbrush to determine the pH level of the user's oral cavity based on the pH detection signal, and subsequently control the execution of corresponding actions.

[0025] Understandably, electric toothbrushes typically use DC motors to achieve precise vibration frequency and amplitude control. The DC motor is usually driven by a PWM signal that adjusts the average voltage of the power supply to the motor, thereby controlling the motor speed. By changing the pulse width—the ratio of the high-level duration to the total cycle (duty cycle)—fine-tuning of the motor speed can be achieved without changing the power supply voltage. The drive signal controls the motor's operating power, thus controlling the motor speed and switching. The drive signal directly acts on the drive circuit, controlling the power supply to the motor. Furthermore, the drive circuit can be implemented using multiple switching circuits, which can be implemented using transistors such as MOSFETs, IGBTs, thyristors, triodes, and power transistors. The electric toothbrush uses a control device to output a corresponding PWM signal to control the switching circuit to turn on or off, thereby changing the motor's operating power and thus changing the motor's speed, starting, or stopping. The control device receives the pH detection signal from the pH sensor and confirms the pH value of the environment in which the brush head is located. If the pH value of the environment is lower than a preset pH value, the control device adjusts the drive signal output to the drive circuit to ensure that the motor's operating power is within a preset power range corresponding to the pH value of the environment. The preset pH value can be set according to actual needs, for example, a preset pH value of 5.5. When the pH value of the environment is lower than 5.5, the control device will adjust the drive signal output to the drive circuit to reduce the motor's operating power. It is understood that the closer the pH value of the environment in which teeth are located is to acidic, the more easily toothpaste will cause increased wear. Therefore, the control device needs to have a built-in pH-motor power mapping table to determine the corresponding motor operating power for the pH environment in which the brush head is located; that is, the preset power range corresponds to the pH value of the environment in which the brush head is located.

[0026] In this embodiment, the alkaline liquid stored in the liquid dispensing component can be a diluted sodium bicarbonate solution, arginine solution, disodium hydrogen phosphate, etc. The liquid storage tank of the liquid dispensing component can be located in the handle of the electric toothbrush and is detachable and replaceable. The output is connected to the liquid storage tank and extends to the brush head. The output of the liquid dispensing component can be controlled by a corresponding air pump to ensure that the liquid dispensing component sprays out through the orifice at the brush head when an alkaline solution is needed. It is understood that when the pH value in the oral cavity is below 5.5, introducing a weakly alkaline substance to neutralize the acidic environment can, to some extent, slow down or prevent enamel demineralization. Therefore, when the pH value of the environment around the brush head is lower than the preset pH value, the control device can control the liquid dispensing component to output an alkaline solution to neutralize the acidic environment in the oral cavity, thereby slowing down or preventing enamel demineralization to some extent. This method also allows the electric toothbrush to clean teeth while simultaneously reducing wear.

[0027] By employing a control method for electric toothbrushes, the applicability of electric toothbrushes can be effectively improved. The electric toothbrush includes a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the environment around the brush head, and a liquid storage and output component disposed on the brush head for storing and distributing an alkaline solution. The pH sensor outputs a pH detection signal to confirm the pH value of the environment around the brush head; if the pH value of the environment around the brush head is lower than a preset pH value, the drive signal output to the drive circuit is adjusted so that the motor's operating power is within a preset power range corresponding to the pH value of the environment around the brush head; and / or, if the pH value of the environment around the brush head is lower than the preset pH value, the liquid storage and output component is controlled to output an alkaline solution. In this way, the electric toothbrush can avoid damaging teeth when operating in an acidic environment in the user's mouth, and can adaptively adjust its operating state according to the specific conditions inside the mouth.

[0028] In one embodiment of the present invention, the electric toothbrush further includes a mode switching component, which is used to output a mode switching signal when triggered; the electric toothbrush has multiple preset driving modes corresponding to the motor, and the multiple driving modes are arranged in a first order; before the step of confirming the pH value of the environment where the brush head is located based on the pH detection signal output by the pH sensor, the method further includes: In response to the mode switching signal, the next driving mode after the current driving mode is identified as the target driving mode in the first order.

[0029] In this embodiment, a mode switching component is provided on the surface of the electric toothbrush handle, and outputs a mode switching signal when triggered. Multiple trigger buttons can be provided for the mode switching function, each corresponding to a driving mode; alternatively, a single trigger button can be provided, allowing for sequential switching of driving modes through multiple triggers of a single button. Specifically, the first driving mode is the driving mode last executed when the electric toothbrush was turned off. When the mode switching component is triggered for the first time, the electric toothbrush drives the motor using the driving mode last executed when the toothbrush was turned off. When the mode switching component is triggered again, the control device receives the mode switching signal and performs a mode switch according to a first sequence, i.e., switching from the first driving mode to the second driving mode, so that the motor operates according to the second driving mode, and this mode is identified as the target driving mode. For example, if the driving mode last executed when the electric toothbrush was turned off was a pulse driving mode, then the pulse driving mode is the first driving mode; when the mode trigger component is triggered again, the control device switches the pulse driving mode to the normal driving mode according to a preset mode switching sequence, i.e., the normal driving mode is the second driving mode.

[0030] refer to Figure 2 In one embodiment of the present invention, the driving signal is a PWM signal. The step of adjusting the driving signal output to the driving circuit so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located when the pH value is lower than a preset pH value specifically comprises: Step S210: Determine the target duty cycle of the drive signal based on the difference between the pH value of the environment where the brush head is located and the preset pH value; Step S220: Adjust the duty cycle of the drive signal to the target duty cycle so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located.

[0031] In this embodiment, the pH value of the environment surrounding the brush head can be obtained using an ion-sensitive field-effect transistor pH sensor or a solid-state reference electrode combined with a polymer membrane electrode. The electric toothbrush obtains the pH value of the environment surrounding the brush head through the pH detection signal output by the pH sensor. The control device converts the input pH detection signal into a corresponding voltage value using a built-in analog-to-digital converter module, thereby confirming the pH value of the environment surrounding the brush head. It is understood that the control device will adjust the motor's operating power based on the difference between the pH value of the environment surrounding the brush head and a preset pH value.

[0032] Optionally, refer to Figure 3 The step of determining the target duty cycle of the drive signal based on the difference between the pH value of the environment where the brush head is located and the preset pH value specifically includes: Step S211: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the first preset difference, the target duty cycle of the drive signal is determined to be the first duty cycle. Step S212: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the second preset difference, the target duty cycle of the drive signal is determined to be the second duty cycle; Step S213: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the third preset difference, the target duty cycle of the drive signal is determined to be the third duty cycle.

[0033] Understandably, the control device has a built-in preset correspondence, meaning that the difference between the pH value of the environment where the brush head is located and the preset pH value corresponds to the drive signal for the drive motor. The control device controls the motor power by changing the duty cycle and output frequency of the PWM signal. Specifically, when the pH detection signal received by the control device confirms that the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a first preset difference, the target duty cycle of the drive signal is determined to be the first duty cycle. That is, the control device outputs a PWM signal with the first duty cycle to the drive circuit so that the motor operates at the power of the PWM signal corresponding to the first duty cycle. When the pH detection signal received by the control device confirms that the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a second preset difference, the target duty cycle of the drive signal is determined to be the second duty cycle. That is, the control device outputs a PWM signal with the second duty cycle to the drive circuit so that the motor operates at the power of the PWM signal corresponding to the second duty cycle. When the pH detection signal received by the control device confirms that the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a third preset difference, the target duty cycle of the drive signal is determined to be the third duty cycle. That is, the control device outputs a PWM signal with the third duty cycle to the drive circuit so that the motor operates at the power of the PWM signal corresponding to the third duty cycle. The greater the difference between the pH value of the environment where the brush head is located and the preset pH value, the higher the acidity of the environment around the teeth, which makes the teeth more fragile. Therefore, the motor power corresponding to the first duty cycle is greater than that corresponding to the second duty cycle, and the motor power corresponding to the second duty cycle is greater than that corresponding to the third duty cycle. That is, the pH value of the environment where the brush head is located is directly proportional to the duty cycle of the PWM signal driving the motor. The lower the pH value of the environment where the brush head is located, the lower the duty cycle of the PWM signal driving the motor.

[0034] Optionally, the step of adjusting the duty cycle of the drive signal to the target duty cycle further includes: When the motor is in the starting state, the current duty cycle of the drive signal will be adjusted at preset intervals until the duty cycle of the drive signal reaches the target duty cycle.

[0035] In this embodiment, to ensure the responsiveness of the electric toothbrush's drive mode activation and mode switching, the control device sets the current drive mode before the electric toothbrush receives a mode trigger signal to power on. However, as the electric toothbrush's usage time increases, its internal circuit impedance also increases, and the battery's activity is affected. This leads to a greater difference between the battery voltage during actual motor operation and its static state. Consequently, the vibration amplitude of the electric toothbrush will suddenly increase from a small to a large amplitude the moment the user powers it on. Although the increased amplitude is in line with the actual requirements of the target drive mode, the sudden change in vibration amplitude can mislead the user into believing that the product's stability is flawed. Therefore, when the motor starts working, the control device adjusts the drive signal output to the drive circuit based on the electric toothbrush's voltage during static operation and the drive mode retained from the last operation. By setting a preset interval, the drive circuit is gradually adjusted. For example, if the preset interval is 0.3 seconds and the preset duty cycle is 0.4%, the duty cycle of the drive signal input to the drive circuit will change from 79.2% to 80.8% in 1.2 seconds. Understandably, this setting method ensures that the vibration amplitude of the electric toothbrush changes slowly over a certain period, effectively avoiding the technical problem of sudden vibration amplitude changes.

[0036] refer to Figure 4 In one embodiment of the present invention, the step of controlling the liquid storage output component to output an alkaline solution when the pH value of the environment where the brush head is located is lower than a preset pH value specifically includes: Step S310: When the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the first preset difference, control the liquid storage output component to output a first volume of alkaline solution. Step S320: When the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the second preset difference, control the liquid storage output component to output a second volume of alkaline solution; Step S330: When the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the third preset difference, control the liquid storage output component to output a third volume of alkaline solution.

[0037] As shown above, introducing a weakly alkaline substance to neutralize an acidic environment can, to some extent, slow down or prevent enamel demineralization. Therefore, neutralizing an acidic environment requires consideration of the environmental acidity. Specifically, the first preset difference is less than the second preset difference, and the second preset difference is less than the third preset difference; the first volume is less than the second volume, and the second volume is less than the third volume. In other words, the lower the pH of the environment in which the brush head is located, the larger the volume of alkaline solution output by the control device's liquid reservoir output component, thus bringing the pH of the environment around the brush head closer to neutral.

[0038] In one embodiment of the present invention, the electric toothbrush further includes a prompting component for outputting a prompting signal; after the step of confirming the pH value of the environment in which the brush head is located based on the pH detection signal output by the pH sensor, the method further includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a fourth preset difference, the prompting component is controlled to output a prompting signal.

[0039] In this embodiment, the prompting component can be implemented using a voice prompting component or a visual prompting component, such as a speaker or LED. Specifically, if the fourth preset difference is greater than the third preset difference, it means the pH value of the environment where the probe is located is low. In this state, it is not suitable for the electric toothbrush to clean teeth, and the alkaline solution output by the liquid storage output component is not suitable for neutralizing or is insufficient to neutralize the acidic environment in the oral cavity. Therefore, when the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the fourth preset difference, the prompting component is controlled to output a prompting signal and stop outputting drive signals to the drive circuit, so that the motor stops working and avoids damage to the teeth.

[0040] The present invention also proposes a control device, which includes a memory, a processor, and a control program for an electric toothbrush stored in the memory and executable on the processor. The control program for the electric toothbrush is configured to implement the steps of the control method for an electric toothbrush as described in any of the above-described embodiments. It is worth noting that since the control device of the present invention is based on the above-described control method for an electric toothbrush, the embodiments of the control device of the present invention include all the technical solutions of all embodiments of the above-described control method for an electric toothbrush, and the achieved technical effects are also completely the same, and will not be repeated here.

[0041] This invention also proposes an electric toothbrush, comprising a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the brush head environment, a liquid storage and output component disposed on the brush head for storing and outputting an alkaline solution, and a control device as described above. It is worth noting that since the electric toothbrush of this invention is based on the aforementioned control device, the embodiments of the electric toothbrush of this invention include all the technical solutions of all embodiments of the aforementioned control device, and the achieved technical effects are completely the same, and will not be repeated here.

[0042] In one embodiment of the present invention, the electric toothbrush further includes: A mode switching component, electrically connected to the control device; the mode switching component is used to output a mode switching signal when triggered; A prompting component is electrically connected to the control device; the prompting component is used to receive a prompting control signal output by the control device and output a corresponding prompting signal.

[0043] In this embodiment, the mode switching component can be implemented using physical buttons and trigger circuits; the prompting component can be implemented using a voice prompting component or a visual prompting component.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A control method for an electric toothbrush, characterized in that, The electric toothbrush includes a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the brush head environment, and a liquid storage and output component disposed on the brush head for storing and outputting alkaline solution. The control method for the electric toothbrush includes: Based on the pH detection signal output by the pH sensor, the pH value of the environment in which the brush head is located is confirmed; If the pH value of the environment where the brush head is located is lower than a preset pH value, the drive signal output to the drive circuit is adjusted so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located; and / or, When the pH value of the environment where the brush head is located is lower than the preset pH value, the liquid storage output component is controlled to output an alkaline solution.

2. The control method for an electric toothbrush as described in claim 1, characterized in that, The electric toothbrush also includes a mode switching component, which is used to output a mode switching signal when triggered; the electric toothbrush has multiple preset driving modes corresponding to the motor, and the multiple driving modes are arranged in a first order; Before the step of confirming the pH value of the environment in which the brush head is located based on the pH detection signal output by the pH sensor, the method further includes: In response to the mode switching signal, the next driving mode after the current driving mode is identified as the target driving mode in the first order.

3. The control method for an electric toothbrush as described in claim 1, characterized in that, The driving signal is a PWM signal. The step of adjusting the driving signal output to the driving circuit so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located when the pH value is lower than a preset pH value specifically involves: The target duty cycle of the drive signal is determined based on the difference between the pH value of the environment where the brush head is located and the preset pH value. Adjust the duty cycle of the drive signal to the target duty cycle so that the motor's operating power is within a preset power range corresponding to the pH value of the environment where the brush head is located.

4. The method as described in claim 3, characterized in that, The step of adjusting the duty cycle of the drive signal to the target duty cycle further includes: When the motor is in the starting state, the current duty cycle of the drive signal will be adjusted at preset intervals until the duty cycle of the drive signal reaches the target duty cycle.

5. The control method for an electric toothbrush as described in claim 3, characterized in that, The step of determining the target duty cycle of the drive signal based on the difference between the pH value of the environment where the brush head is located and the preset pH value specifically includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the first preset difference, the target duty cycle of the drive signal is determined to be the first duty cycle. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the second preset difference, the target duty cycle of the drive signal is determined to be the second duty cycle. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a third preset difference, the target duty cycle of the drive signal is determined to be the third duty cycle.

6. The control method for an electric toothbrush as described in claim 1, characterized in that, The step of controlling the liquid storage output component to output an alkaline solution when the pH value of the environment where the brush head is located is lower than the preset pH value specifically includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the first preset difference, the liquid storage output component is controlled to output a first volume of alkaline solution. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than the second preset difference, the liquid storage output component is controlled to output a second volume of alkaline solution. If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a third preset difference, the liquid storage output component is controlled to output a third volume of alkaline solution.

7. The control method for an electric toothbrush as described in claim 1, characterized in that, The electric toothbrush further includes a prompting component for outputting a prompting signal; after the step of confirming the pH value of the environment in which the brush head is located based on the pH detection signal output by the pH sensor, the method further includes: If the difference between the pH value of the environment where the brush head is located and the preset pH value is greater than a fourth preset difference, the prompting component is controlled to output a prompting signal.

8. A control device, characterized in that, The control device includes a memory, a processor, and a control program for an electric toothbrush stored in the memory and executable on the processor, the control program being configured to implement the steps of the control method for an electric toothbrush as described in any one of claims 1 to 7.

9. An electric toothbrush, characterized in that, The electric toothbrush includes a brush head, a motor, a drive circuit for driving the motor, a pH sensor disposed on the brush head for detecting the pH value of the brush head environment, a liquid storage and output component disposed on the brush head for storing and outputting an alkaline solution, and a control device as described in claim 8.

10. The electric toothbrush as described in claim 9, characterized in that, The electric toothbrush also includes: A mode switching component, electrically connected to the control device; the mode switching component is used to output a mode switching signal when triggered; A prompting component is electrically connected to the control device; the prompting component is used to receive a prompting control signal output by the control device and output a corresponding prompting signal.

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