WO2022121037A1

WO2022121037A1 - Current circulation detection type toothbrush control method and device, medium and electric toothbrush

Info

Publication number: WO2022121037A1
Application number: PCT/CN2020/141124
Authority: WO
Inventors: 蒋婷觅; 郭凡美
Original assignee: 上海向方科技有限公司
Priority date: 2020-12-11
Filing date: 2020-12-29
Publication date: 2022-06-16
Also published as: CN114617660A

Abstract

A current circulation detection type toothbrush control method, comprising: upon acquisition of a power-on signal, a motor operating in a weak-vibration mode (S100); acquiring the present current value of the motor, and determining whether the present current value is less than a first preset current value (S200); if the present current value is less than the first preset current value, controlling the motor to operate in a strong-vibration mode, or the motor continuing to operate in the weak-vibration mode (S300); and when the motor operates in the strong-vibration mode, continuing to acquire the present current value of the motor, and determining whether the present current value is less than a second preset current value (S400); if the present current value is less than the second preset current value, the motor continuing to operate in the strong-vibration mode, or controlling the motor to operate in the weak-vibration mode (S500). By acquiring the working current of the motor, a corresponding sensor does not need to be provided, which reduces the costs, and the overall structure is simple and is easy to implement.

Description

Current cycle detection type toothbrush control method, device, medium and electric toothbrush

technical field

The present invention relates to the technical field of toothbrush control, in particular to a current cycle detection type toothbrush control method, device, medium and electric toothbrush.

Background technique

With the further improvement of people's demand for quality of life, automatic cleaning and nursing devices are more and more widely used in daily life. Electric toothbrushes can clean the mouth more effectively, remove plaque more thoroughly, reduce gingivitis and periodontal disease. It is widely accepted for oral diseases such as disease and bleeding gums. At present, a sonic toothbrush is a commonly used electric toothbrush. A sonic toothbrush means that the vibration frequency of the bristles/brush head is consistent with or similar to the frequency of the sound wave, so it is also called a sonic vibration toothbrush.

Usually, the steps of using an electric toothbrush are: first coat the toothpaste on the brush head, then start the electric toothbrush to make the brush head vibrate, put the brush head in the mouth, and start brushing when the brush head touches the teeth. Since the vibration force of the brush head remains constant, when the toothbrush is started outside the mouth, with the vibration of the brush head, it will drive the water and toothpaste on the brush head to splash around, and if it is pressed too hard, it will cause certain damage to the teeth. lead to poor user experience.

At present, some existing electric toothbrushes solve the above technical problems by setting a pressure sensing system for pressure detection. When the pressure sensing system detects that the pressure is low, it means that the toothbrush is in an no-load state, and at this time, the toothbrush is controlled to be in a weak vibration mode to prevent water and When the toothpaste splashes, when the brush head touches the teeth, the pressure increases. At this time, control the toothbrush to switch to the strong vibration mode, and you can brush your teeth normally. When the pressure is high, it means that the pressure is too heavy, and then control the toothbrush to switch to the weak vibration mode again. , to prevent toothbrush from causing damage to teeth. Due to the high cost of the pressure sensing system, the cost of the electric toothbrush is greatly increased, and it is difficult to be widely used in electric toothbrushes.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a current cycle detection type toothbrush control method, device, medium and electric toothbrush, which have the advantages of low cost and easy implementation.

For achieving the above object, technical scheme of the present invention is as follows:

A current cycle detection type toothbrush control method, the method is applied to an electric toothbrush, the electric toothbrush comprises: a control microcontroller and a motor, the control microcontroller is preset with a weak vibration mode and a strong vibration mode, and the strong vibration mode The vibration frequency and/or amplitude is greater than the weak vibration mode, and the method includes:

After acquiring the power-on signal, control the motor to run in a weak vibration mode;

obtaining the current current value of the motor, and judging whether the current current value is less than a first preset current value;

If the current current value is less than the first preset current value, control the motor to run in the strong vibration mode, otherwise, the motor continues to run in the weak vibration mode;

When the motor is running the strong vibration mode, continue to obtain the current current value of the motor, and determine whether the current current value is less than a second preset current value;

If the current current value is less than the second preset current value, the motor continues to run in the strong vibration mode, otherwise, the motor is controlled to run in the weak vibration mode.

To achieve the above technical solution, since the current of the motor in the electric toothbrush will change correspondingly with the change of the load, the working state of the motor can be controlled according to the load state by detecting the current to reflect the state of the load; when the electric toothbrush is working, In the initial startup state, the motor is usually in an unloaded state. At this time, the motor runs in the weak vibration mode by default, so that the brush head will not splash around before the brush head is placed in the mouth, which improves the user experience; when the brush head is placed in the mouth, the user experience is improved. When the internal force is applied to the teeth, the load of the motor increases and the corresponding current decreases, so that the current current value is less than the first preset current value, and the motor is adjusted to the strong vibration mode, so as to effectively clean the teeth, However, if the current current value is consistently greater than the first preset current value, it means that the toothbrush has not entered the oral cavity, and at this time, the motor is kept running in the weak vibration mode; If the current value is less than the second preset current value, it means that the toothbrush is in the normal brushing process, and the motor continues to operate in strong vibration mode to ensure the continuous cleaning ability of the brushing process, and when the force on the brush head is too large or the brush head leaves the teeth, At this time, the current state changes again, so that the current current value is greater than the second preset current value. At this time, the motor is adjusted to the weak vibration mode again, so as to reduce the damage to the teeth, or the water and foam splash after the brush head is separated from the mouth. The user experience is further improved; and the present invention collects the working current of the motor, which is equivalent to using the motor itself as a sensor for detection without setting a corresponding sensing system, thereby reducing the cost, and the overall structure is simple and easy to implement.

As a preferred solution of the present invention, the first preset current value is determined according to the no-load current in the weak vibration mode, and the second preset current value is determined according to the no-load current in the strong vibration mode.

On the other hand, the present invention also provides a current cycle detection type toothbrush control device, the device is applied to an electric toothbrush, and the electric toothbrush includes: a control microcontroller and a motor, and the control microcontroller is preset with a weak vibration mode and a strong vibration mode. vibration mode, the vibration frequency and/or amplitude of the strong vibration mode is greater than that of the weak vibration mode, including:

a first acquisition module, configured to acquire a power-on signal to control the motor to run in a weak vibration mode;

a second acquisition module, configured to acquire the current current value of the motor, and determine whether the current current value is less than the first preset current value;

a first control module, configured to control the motor to run in the strong vibration mode when the current current value is less than the first preset current value, otherwise, control the motor to continue to run in the weak vibration mode;

a third acquisition module, configured to continue to acquire the current current value of the motor when the motor operates in the strong vibration mode, and determine whether the current current value is less than a second preset current value;

The second regulation module is configured to control the motor to continue to run in the strong vibration mode when the current current value is less than the second preset current value, otherwise, control the motor to run in the weak vibration mode.

On the other hand, the present invention also provides a storage medium, where a computer program is stored in the storage medium, and the computer program is used for a processor to execute the steps of the method according to any one of the above technical solutions.

In another aspect, the present invention also provides an electric toothbrush, comprising: a control single-chip microcomputer, a control circuit, a motor, a sampling resistor and a memory;

The control single chip is connected with the control circuit, and the control circuit is connected with the motor;

The motor is connected with the brush head for driving the brush head to vibrate;

The sampling resistor is connected with the single-chip microcomputer, and is used for detecting the working current of the motor;

The memory is connected to the control single-chip computer, and a computer program is stored in the memory, and the control single-chip computer reads the computer program to execute the steps of the method described in any of the above technical solutions.

As a preferred solution of the present invention, the control circuit includes: a filter chip and a power amplifier, the filter chip is connected to the control microcontroller and the power amplifier, the power amplifier is connected to the motor, the sampling resistor is connected to the The power amplifiers are connected.

As a preferred solution of the present invention, one end of the sampling resistor is connected to the common ground end of the control microcontroller.

To sum up, the present invention has the following beneficial effects:

The present invention provides a current cycle detection type toothbrush control method, device, medium and electric toothbrush, since the current of the motor in the electric toothbrush will change correspondingly with the change of the load, so the state of the load can be reflected by detecting the current, that is The working state of the motor can be controlled according to the load condition; when the electric toothbrush is working, in the initial start-up state, the motor is usually in a no-load state, and the initial current value is greater than or equal to the first preset current value, and the motor is in the weak vibration mode at this time. Running, the water and toothpaste will not splash around before the brush head is put into the mouth, which improves the user experience; when the brush head is put into the mouth and exerts force on the teeth, the load of the motor increases and the corresponding current decreases, Make the current current value less than the second preset current value, adjust the motor to strong vibration mode, so as to effectively clean the teeth; when the force on the brush head is too large or the brush head leaves the teeth, the current state changes again at this time , so that the current current value is less than or equal to the third preset current value and greater than the fourth preset current value. At this time, the motor is adjusted to the weak vibration mode again, so as to reduce the damage to the teeth, or the water and water after the brush head is separated from the oral cavity. The foam is splashed, which further improves the user experience; and the present invention collects the working current of the motor, which is equivalent to using the motor itself as a sensor for detection, without the need to set up a corresponding sensing system, thereby reducing the cost, and the overall structure is simple and easy to implement. .

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a method flowchart of a control method in an embodiment of the present invention.

FIG. 2 is a control flow chart of a control method in an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a control device in an embodiment of the present invention.

4 is a schematic structural diagram of an electric toothbrush in an embodiment of the present invention.

Corresponding part names represented by numbers and letters in the figure:

101, a first acquisition module; 102, a second acquisition module; 103, a first control module; 104, a third acquisition module; 105, a second control module; 201, a control microcontroller; 202, a control circuit; 2021, a filter chip; 2022, power amplifier; 203, motor; 204, sampling resistor; 205, memory.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but 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 efforts shall fall within the protection scope of the present invention.

Example

A current cycle detection type toothbrush control method, as shown in Figure 1, the method is applied to an electric toothbrush, the electric toothbrush includes: controlling a single-chip microcomputer and a motor, and a weak vibration mode and a strong vibration mode are preset in the control single-chip microcomputer. The vibration frequency and/or amplitude is greater than the weak vibration mode, and the method specifically includes:

S100, after acquiring the power-on signal, control the motor to run in a weak vibration mode.

Specifically, the weak vibration mode refers to a working mode in which the motor vibrates at a relatively low vibration frequency and/or amplitude. In the weak vibration mode, the adhesion between the water and toothpaste and the brush head can overcome the vibration force of the brush head and remain stable. In the actual application process, the initial state of startup is set to the weak vibration state by default, so that the water and toothpaste on the brush head will not splash around in the initial startup state.

S200, obtain the current current value of the motor, and determine whether the current current value is less than the first preset current value.

Specifically, the current current value is the real-time current of the motor in the running state, and the motor is subjected to cyclic current detection during the operation of the motor to obtain the current current value in real time, and the first preset current value is based on the low vibration mode. The no-load current is determined, that is, according to the actual operating state of the electric toothbrush, a proportional coefficient is set. For example, the proportional coefficient can be set to 0.8, and the proportional coefficient is multiplied by the no-load current in the weak vibration mode to obtain a suitable The first preset current value, for example, the no-load current in the weak vibration mode is Ia, and the proportional system is determined to be A, then the first preset current value is Ia*A.

S300, if the current current value is less than the first preset current value, control the motor to run in the strong vibration mode, otherwise, the motor continues to run in the weak vibration mode.

Specifically, when the toothbrush is placed in the oral cavity and the tooth is pressed by the brush head, the motor will be loaded to increase the damping, and the current will be reduced to less than the first preset current value at this time, which means the brush The head is in the normal brushing state, and the motor enters the strong vibration mode to ensure the cleanliness of the teeth. The strong vibration mode refers to the working mode in which the motor vibrates at a higher vibration frequency and/or amplitude, and the vibration frequency and The range can be adapted to the needs of users of different ages; and if the current is continuously maintained at a state greater than the first preset current value, it means that the brush head is not in the normal brushing state, and the motor is always kept in the weak vibration mode. run.

S400, when the motor is running in the strong vibration mode, continue to obtain the current current value of the motor, and determine whether the current current value is smaller than the second preset current value.

In the normal brushing state, the motor is in a strong vibration state, and the second preset current value is determined according to the no-load current in the strong vibration mode, that is, according to the actual operating state of the electric toothbrush, a proportional coefficient is set. For example, the proportional coefficient can be set Set as 0.8, multiply the no-load current in the strong vibration mode by the proportional coefficient, and then a suitable second preset current value can be obtained. For example, the no-load current in the strong vibration mode is Ib, and the proportional system is determined as B , the second preset current value is Ib*B.

S500, if the current current value is less than the second preset current value, the motor continues to run in the strong vibration mode, otherwise, the motor is controlled to run in the weak vibration mode.

If the current current value is less than the second preset current value, it means that the brush head is still in the process of brushing teeth, and the motor is kept running in strong vibration mode, and when the brush head leaves the teeth, the load of the brush head is reduced and the current changes. , or when the brush head is pressed too hard and the load of the brush head is too large, the current will also change accordingly, so that the current current value is greater than the second preset current value, at this time, the motor is controlled to enter the weak vibration mode again, which can reduce the Damage to teeth.

Since the current of the motor in the electric toothbrush will change correspondingly with the change of the load, the working state of the motor can be controlled according to the load condition by detecting the current to reflect the condition of the load; when the electric toothbrush is working, in the initial start-up state, Usually the motor is in an no-load state, and the motor runs in the weak vibration mode by default, so that the brush head will not splash around before putting it in the mouth, which improves the user experience; At this time, the load of the motor increases, and the corresponding current decreases, so that the current current value is less than the first preset current value, and the motor is adjusted to the strong vibration mode, so as to effectively clean the teeth, and if the current current value If the current value is consistently greater than the first preset current value, it means that the toothbrush has not entered the oral cavity. At this time, keep the motor running in the weak vibration mode; when running in the strong vibration mode, if the current value is less than the second preset current value The current value indicates that the toothbrush is in the normal brushing process, and the motor continues to run in strong vibration mode to ensure the continuous cleaning ability of the brushing process. When the force on the brush head is too large or the brush head leaves the teeth, the current state is again change, so that the current current value is greater than the second preset current value, at this time, the motor is adjusted to the weak vibration mode again, thereby reducing the damage to the teeth, or the water and foam splashing after the brush head is separated from the mouth, further improving the user experience; Moreover, the present invention collects the working current of the motor, which is equivalent to using the motor itself as a sensor for detection without setting a corresponding sensing system, thereby reducing the cost, and the overall structure is simple and easy to implement.

On the other hand, the present embodiment also provides a current cycle detection type toothbrush control device, which is applied to an electric toothbrush. The electric toothbrush includes: a control microcontroller and a motor, and the control microcontroller is preset with a weak vibration mode and a strong vibration mode, and a strong vibration mode. The vibration frequency and/or amplitude of the vibration mode is greater than that of the weak vibration mode, including: a first acquisition module, used to acquire a power-on signal to control the motor to run in the weak vibration mode; a second acquisition module, used to acquire the current current value of the motor, determine Whether the current current value is less than the first preset current value; the first control module is used to control the motor to run in the strong vibration mode when the current current value is less than the first preset current value, otherwise, control the motor to continue to run in the weak vibration mode The third acquisition module is used to continue to acquire the current current value of the motor when the motor runs in the strong vibration mode, and judge whether the current current value is less than the second preset current value; the second control module is used for when the current current value is less than the first When the current value is preset, the control motor continues to run in the strong vibration mode, otherwise, the control motor runs in the weak vibration mode.

Among them, the first preset current value is determined according to the no-load current in the weak vibration mode, that is, according to the actual operating state of the electric toothbrush, a proportional coefficient is set. For example, the proportional coefficient can be set to 0.8, and the proportional coefficient is multiplied by the weak The no-load current in the vibration mode can be used to obtain a suitable first preset current value. For example, if the no-load current in the weak vibration mode is Ia, and the proportional system is determined to be A, then the first preset current value is Ia* A.

The second preset current value is determined according to the no-load current in the strong vibration mode, that is, according to the actual operating state of the electric toothbrush, a proportional coefficient is set. For example, the proportional coefficient can be set to 0.8, and the proportional coefficient is multiplied by the strong vibration mode. A suitable second preset current value can be obtained. For example, if the no-load current in the strong vibration mode is Ib, and the proportional system is determined to be B, the second preset current value is Ib*B.

On the other hand, this embodiment also provides a storage medium, where a computer program is stored in the storage medium, and the computer program is used for the processor to execute the steps of the above method.

On the other hand, this embodiment also provides an electric toothbrush, including: a control single-chip microcomputer, a control circuit, a motor, a sampling resistor and a memory; the control single-chip microcomputer is connected with the control circuit, the control circuit is connected with the motor; the motor is connected with the brush head , used to drive the brush head to vibrate; the sampling resistor is connected to the single-chip microcomputer to detect the working current of the motor; the memory is connected to the control single-chip microcomputer, and a computer program is stored in the memory to control the single-chip computer to read the computer program and execute the steps of the above method.

Among them, the control circuit includes: a filter chip and a power amplifier, the filter chip is connected to the control single-chip microcomputer and the power amplifier, the power amplifier is connected to the motor, and the sampling resistor is connected to the power amplifier. Because the low-cost single-chip microcomputer can only detect DC, and the sonic motor is AC motor, so the sampling resistor cannot be connected with the motor in a loop, but connected with the power amplifier to obtain the DC current signal, or in some embodiments, the sampling resistor can also be connected in the loop of the power module, or DC current signal can be obtained;

And in this embodiment, one end of the sampling resistor is connected to the common ground terminal of the control microcontroller, so it is only necessary to use one IO port of the control microcontroller to obtain the voltage value of the sampling resistor through the control microcontroller, and then divide it by the resistance to calculate The current value is output, and the control single-chip computer controls the motor to run according to the current value according to the control logic of the computer program in the memory, so as to prevent toothpaste and water from splashing and reduce tooth damage.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium, When the program is executed, it may include the flow of the embodiments of the above-mentioned methods. Wherein, any reference to memory, storage, database or other medium used in the various embodiments provided in this application may include non-volatile and/or volatile memory. Nonvolatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Road (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A current cycle detection type toothbrush control method, characterized in that, the method is applied to an electric toothbrush, and the electric toothbrush comprises: a control microcontroller and a motor, and a weak vibration mode and a strong vibration mode are preset in the control microcontroller. The vibration frequency and/or amplitude of the strong vibration mode is greater than that of the weak vibration mode, and the method includes:

After acquiring the power-on signal, control the motor to run in a weak vibration mode;

obtaining the current current value of the motor, and judging whether the current current value is less than a first preset current value;

If the current current value is less than the first preset current value, control the motor to run in the strong vibration mode, otherwise, the motor continues to run in the weak vibration mode;

When the motor is running the strong vibration mode, continue to obtain the current current value of the motor, and determine whether the current current value is less than a second preset current value;

If the current current value is less than the second preset current value, the motor continues to run in the strong vibration mode, otherwise, the motor is controlled to run in the weak vibration mode.
The current cycle detection type toothbrush control method according to claim 1, wherein the first preset current value is determined according to the no-load current in the weak vibration mode, and the second preset current value is determined according to the strong vibration mode. The no-load current in vibration mode is determined.
A current cycle detection type toothbrush control device, characterized in that the device is applied to an electric toothbrush, and the electric toothbrush comprises: a control single-chip microcomputer and a motor, and a weak vibration mode and a strong vibration mode are preset in the control single-chip microcomputer. The vibration frequency and/or amplitude of the strong vibration mode is greater than that of the weak vibration mode, including:

a first acquisition module, configured to acquire a power-on signal to control the motor to run in a weak vibration mode;

a second acquisition module, configured to acquire the current current value of the motor, and determine whether the current current value is less than the first preset current value;

a first control module, configured to control the motor to run in the strong vibration mode when the current current value is less than the first preset current value, otherwise, control the motor to continue to run in the weak vibration mode;

a third acquisition module, configured to continue to acquire the current current value of the motor when the motor operates in the strong vibration mode, and determine whether the current current value is less than a second preset current value;

The second control module is configured to control the motor to continue to run in the strong vibration mode when the current current value is less than the second preset current value, otherwise, control the motor to run in the weak vibration mode.
The current cycle detection type toothbrush control device according to claim 3, wherein the first preset current value is determined according to the no-load current in the weak vibration mode, and the second preset current value is determined according to the strong vibration mode. The no-load current in vibration mode is determined.
A storage medium, characterized in that a computer program is stored in the storage medium, and the computer program is used for a processor to execute the steps of the method according to any one of claims 1-2.
An electric toothbrush, characterized in that it comprises: a control microcontroller, a control circuit, a motor, a sampling resistor and a memory;

The control single chip is connected with the control circuit, and the control circuit is connected with the motor;

The motor is connected with the brush head for driving the brush head to vibrate;

The sampling resistor is connected with the single-chip microcomputer, and is used for detecting the working current of the motor;

The memory is connected to the control single-chip computer, and a computer program is stored in the memory, and the control single-chip computer reads the computer program to execute the steps of the method according to any one of claims 1-2.
The electric toothbrush according to claim 6, wherein the control circuit comprises: a filter chip and a power amplifier, the filter chip is connected to the control microcontroller and the power amplifier, the power amplifier is connected to the motor, The sampling resistor is connected with the power amplifier.
The electric toothbrush according to claim 7, wherein one end of the sampling resistor is connected to the common ground end of the control microcontroller.