WO2022121037A1 - Procédé et dispositif de commande de brosse à dents de type à détection de circulation de courant, support et brosse à dents électrique - Google Patents

Procédé et dispositif de commande de brosse à dents de type à détection de circulation de courant, support et brosse à dents électrique Download PDF

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Publication number
WO2022121037A1
WO2022121037A1 PCT/CN2020/141124 CN2020141124W WO2022121037A1 WO 2022121037 A1 WO2022121037 A1 WO 2022121037A1 CN 2020141124 W CN2020141124 W CN 2020141124W WO 2022121037 A1 WO2022121037 A1 WO 2022121037A1
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WO
WIPO (PCT)
Prior art keywords
motor
current value
vibration mode
current
control
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PCT/CN2020/141124
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English (en)
Chinese (zh)
Inventor
蒋婷觅
郭凡美
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上海向方科技有限公司
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Publication of WO2022121037A1 publication Critical patent/WO2022121037A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/221—Control arrangements therefor

Definitions

  • 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.
  • 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.
  • 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.
  • 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.
  • some existing electric toothbrushes solve the above technical problems by setting a pressure sensing system for pressure detection.
  • 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
  • the pressure increases. At this time, control the toothbrush to switch to the strong vibration mode, and you can brush your teeth normally.
  • 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.
  • 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.
  • a current cycle detection type toothbrush control 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:
  • the motor continues to run in the strong vibration mode, otherwise, the motor is controlled to run in the weak vibration mode.
  • 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.
  • 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,
  • 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.
  • 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.
  • the first preset current value is determined according to the no-load current in the weak vibration mode
  • the second preset current value is determined according to the no-load current in the strong vibration mode
  • 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.
  • the first preset current value is determined according to the no-load current in the weak vibration mode
  • the second preset current value is determined according to the no-load current in the strong vibration mode
  • 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.
  • 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.
  • 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.
  • one end of the sampling resistor is connected to the common ground end of the control microcontroller.
  • 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.
  • 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. .
  • 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.
  • FIG. 4 is a schematic structural diagram of an electric toothbrush in an embodiment of the present invention.
  • 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.
  • 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:
  • the weak vibration mode refers to a working mode in which the motor vibrates at a relatively low vibration frequency and/or amplitude.
  • the adhesion between the water and toothpaste and the brush head can overcome the vibration force of the brush head and remain stable.
  • 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.
  • 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.
  • 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.
  • the motor 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.
  • the motor 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.
  • 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.
  • the no-load current in the strong vibration mode is Ib
  • the proportional system is determined as B
  • the second preset current value is Ib*B.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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;
  • 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.
  • 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.
  • 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.
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDRSDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous chain Road (Synchlink) DRAM
  • SLDRAM synchronous chain Road (Synchlink) DRAM
  • Rambus direct RAM
  • DRAM direct memory bus dynamic RAM
  • RDRAM memory bus dynamic RAM

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

La présente invention concerne un procédé de commande de brosse à dents de type à détection de circulation de courant, comprenant les étapes suivantes : lors de l'acquisition d'un signal de mise sous tension, un moteur fonctionne dans un mode à vibration faible (S100) ; acquérir la valeur de courant actuelle du moteur, et déterminer si la valeur de courant actuelle est inférieure à une première valeur de courant prédéfinie (S200) ; si la valeur de courant actuelle est inférieure à la première valeur de courant prédéfinie, commander le moteur pour fonctionner dans un mode à vibration forte, ou le moteur continue à fonctionner dans le mode à vibration faible (S300) ; et lorsque le moteur fonctionne dans le mode à vibration forte, continuer à acquérir la valeur de courant actuelle du moteur, et déterminer si la valeur de courant actuelle est inférieure à une seconde valeur de courant prédéfinie (S400) ; si la valeur de courant actuelle est inférieure à la seconde valeur de courant prédéfinie, le moteur continue à fonctionner dans le mode à vibration forte, ou commander le moteur pour fonctionner dans le mode à vibration faible (S500). En acquérant le courant de travail du moteur, un capteur correspondant n'a pas besoin d'être fourni, ce qui réduit les coûts, et la structure globale est simple et est facile à mettre en œuvre.
PCT/CN2020/141124 2020-12-11 2020-12-29 Procédé et dispositif de commande de brosse à dents de type à détection de circulation de courant, support et brosse à dents électrique WO2022121037A1 (fr)

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CN202011442154.8 2020-12-11
CN202011442154.8A CN114617660A (zh) 2020-12-11 2020-12-11 电流循环检测式牙刷控制方法、装置、介质及电动牙刷

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CN117614315A (zh) * 2022-12-30 2024-02-27 广州星际悦动股份有限公司 电机控制方法、装置、电子设备及存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117614315A (zh) * 2022-12-30 2024-02-27 广州星际悦动股份有限公司 电机控制方法、装置、电子设备及存储介质

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