WO2016067151A1 - Brosse à dents électrique avec réglage automatique de seuil de déclenchement de force - Google Patents

Brosse à dents électrique avec réglage automatique de seuil de déclenchement de force Download PDF

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Publication number
WO2016067151A1
WO2016067151A1 PCT/IB2015/057933 IB2015057933W WO2016067151A1 WO 2016067151 A1 WO2016067151 A1 WO 2016067151A1 IB 2015057933 W IB2015057933 W IB 2015057933W WO 2016067151 A1 WO2016067151 A1 WO 2016067151A1
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WO
WIPO (PCT)
Prior art keywords
brushhead
force
toothbrush
brushing mode
power toothbrush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2015/057933
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English (en)
Inventor
Steven Charles Deane
Hubert Gerard Jean Joseph Amaury Vroomen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of WO2016067151A1 publication Critical patent/WO2016067151A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
    • A46B15/0004—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means
    • A46B15/0012—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means with a pressure controlling device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C2204/00—Features not otherwise provided for
    • A61C2204/005—Features not otherwise provided for using chip tag or any electronic identification mean, e.g. RFID

Definitions

  • the present invention pertains to power toothbrushes, and, in particular, to a power toothbrush having force sensing capability and automated setting of force trigger level based on brushing mode.
  • power toothbrushes for cleaning teeth are well known.
  • power toothbrushes rely on a set of bristles which are attached to a bristle mounting plate, which in turn is moved by a driver mechanism to scrub the surfaces of teeth.
  • Such toothbrushes which rely on scrubbing action of the bristles for actual cleaning, typically require some amount of pressure to be exerted by the user against the teeth to accommodate differences in the various shapes and spacing of the teeth and to effectively clean the teeth.
  • Such pressure may result in an abrasion effect, including damage to both the soft and hard tissues in the mouth. This is, of course, undesirable.
  • Some power toothbrushes contain timers and force sensors to help people achieve better brushing time and force levels.
  • the force sensor in such power toothbrushes is set to trigger an alarm at a fixed level that will correct particularly heavy brushers (>300g force, i.e. >3N).
  • the optimal typical brushing force is in the region of 1- 1.5N.
  • the user has some dental issues, such as sensitive teeth caused by gum recession, which is widely prevalent especially amongst older users, the optimum brushing force may be even lower to prevent erosion of the exposed dentine roots, which are far softer than the crown enamel.
  • some power toothbrushes have multiple modes of operation which typically may be selected by a user via control buttons on the body of the toothbrush. Each mode will typically have a different brushing action and/or amplitude. For instance, a normal mode might have a medium level brushing action and/or amplitude particularly adapted for normal brushing/cleansing of the teeth, while a sensitive mode might have an action which has less brush movement and/or moves at a slower rate. Other modes of operation could be a massage mode in which the brush has a pulsing action or a whitening mode that has a higher level brushing action and/or amplitude and/or rate suited for tooth polishing.
  • a power toothbrush in one embodiment, includes a brushhead, a sensor for measuring a force parameter indicative of a force exerted by the brushhead, and a handle portion having a motor for driving the brushhead and a processing unit structured to control operation of the power toothbrush.
  • the processing unit is further structured to: (i) receive information identifying a brushing mode for the toothbrush, (ii) establish a force trigger level for the power toothbrush, wherein the force trigger level corresponds to the brushing mode, (iii) cause the motor to drive the brushhead in accordance with one or more parameters associated with the brushing mode, (iv) receive the force parameter, and (v) determine whether to cause an alarm to be triggered based upon the force trigger level and the force parameter.
  • a method of operating a power toothbrush having a brushhead coupled to a handle portion of the power toothbrush includes receiving information identifying a brushing mode for the power toothbrush, establishing a force trigger level for the power toothbrush, wherein the force trigger level corresponds to the brushing mode, causing a motor provided in the handle portion to drive the brushhead in accordance with one or more parameters associated with the brushing mode, receiving a force parameter measured by a sensor included with the power toothbrush, and determining whether to cause an alarm to be triggered based upon the force trigger level and the force parameter.
  • a power toothbrush in another embodiment, includes a brushhead, a sensor for measuring a force parameter indicative of a force exerted by the brushhead, and a handle portion having a motor for driving the brushhead and a processing unit structured to control operation of the power toothbrush.
  • the processing unit is structured to: (i) receive information establishing a force trigger level for the power toothbrush, wherein the force trigger level corresponds to a number of brushing modes for the toothbrush, (ii) cause the motor to drive the brushhead in accordance with one or more parameters associated with the brushing mode, (iii) receive the force parameter, and (iv) determine whether to cause an alarm to be triggered based upon the force trigger level and the force parameter.
  • a power toothbrush in yet another embodiment, includes a brushhead, a sensor for measuring a force parameter indicative of a force exerted by the brushhead, and a handle portion having a motor for driving the brushhead and a processing unit structured to control operation of the power toothbrush.
  • the processing unit is structured to: (i) receive information identifying a current position in a mouth of a user where the brushhead is being used, (ii) establish a force trigger level and a brushing mode for the power toothbrush based on the current position, (iii) cause the motor to drive the brushhead in accordance with one or more parameters associated with the brushing mode, (iv) receive the force parameter, and (v) determine whether to cause an alarm to be triggered based upon the force trigger level and the force parameter.
  • FIG. 1 is an exploded schematic view of a toothbrush according to an exemplary embodiment of the present invention
  • FIG. 2 is a schematic diagram of the toothbrush of FIG. 1;
  • FIG. 3 is a flowchart illustrating operation of the toothbrush of FIGS. 1 and 2 according to one exemplary embodiment;
  • FIG. 4 is a flowchart illustrating operation of the toothbrush of FIGS. 1 and 2 according to another, alternative exemplary embodiment.
  • the word "unitary” means a component is created as a single piece or unit. That is, a component that includes pieces that are created separately and then coupled together as a unit is not a “unitary” component or body.
  • the statement that two or more parts or components "engage” one another shall mean that the parts exert a force against one another either directly or through one or more intermediate parts or components.
  • the term “number” shall mean one or an integer greater than one (i.e., a plurality).
  • force parameter shall mean a measurement parameter that is indicative of an applied force, such as, without limitation, directly measured force, directly measured pressure, and a force value derived from a directly measured pressure.
  • the term "brushing mode” shall refer to a specific mode of operation of a power toothbrush that has associated with it at least one of: (i) in amplitude of operation the power toothbrush, (ii) a frequency of operation of the power toothbrush, and (iii) a time of operation of the power toothbrush.
  • Directional phrases used herein, such as, for example and without limitation, top, bottom, left, right, upper, lower, front, back, and derivatives thereof, relate to the orientation of the elements shown in the drawings and are not limiting upon the claims unless expressly recited therein.
  • FIG. 1 is an exploded view of and FIG. 2 is a schematic diagram of a power toothbrush 10 according to an exemplary embodiment of the present invention.
  • Toothbrush 10 includes a handle portion 12 and a DC motor 14 which is powered by a battery 16.
  • Motor 14 provides the driving action for a brushhead 18A, which in turn is removably mounted on a motor driveshaft 22.
  • a DC motor in the exemplary embodiment is only one of several possible motor systems.
  • Brushhead 18A includes a set of bristles 24A mounted on a bristle back member 25 which together define the bristle portion of brushhead 18 A. Bristles 24A accomplish cleaning through an oscillatory action provided to brushhead 18A by motor 14.
  • the operation of motor 14 is controlled by a processing unit 26, which is a common component of power toothbrushes.
  • Processing unit 26 may be, for example and without limitation, a microprocessor, a microcontroller, or any other suitable processing device and may include a suitable memory for storing routines executed by processing unit 26.
  • toothbrush 10 may further include a number of similarly structured alternative brushheads 18, labeled 18B and 18C, each of which may be coupled to driveshaft 22 as desired.
  • brushheads 18A, 18B and 18C may be used by the same user, each one for a different purpose.
  • brushhead 18 A may be structured for normal brushing
  • brushhead 18B may be structured for gentle brushing
  • brushhead 18C may be structured for tooth whitening, with the user selecting the appropriate brushhead 18A, 18B, 18C and connecting it to driveshaft 22 as appropriate.
  • brushheads 18 A, 18B and 18C may be used by different users that share handle portion 12.
  • two such alternative brushheads 18 are shown in the illustrated embodiment, it will be appreciated that more or less alternative brushheads may also be employed within the scope of the disclosed concept.
  • handle portion 12 includes a sensor element 28 structured to measure the force being applied by a user to his or her teeth by brushhead 18A, 18B, 18C in a direction that is generally perpendicular to the longitudinal axis of toothbrush 10.
  • sensor element 28 is located adjacent to motor 14 and is structured to measure the force on driveshaft 22.
  • each brushhead 18A, 18B, 18C may include a sensor element 28 structured to be operatively coupled to processing unit 26 provided in handle portion 12 when the brushhead 18 A, 18B, 18C is coupled to handle portion 12 to measure the force being applied by a user to his or her teeth by brushhead 18 A, 18B, 18C in a direction that is generally perpendicular to the longitudinal axis of toothbrush 10.
  • the former configuration wherein sensor element 28 is located within handle portion 12 will help to keep the cost of brushheads 18A, 18B, 18C down and will avoid interconnection issues across the pluggable interface between brushheads 18A, 18B, 18C and handle portion 12.
  • sensor element 28 may be any of a number of known or hereafter developed suitable sensing devices for sensing the force exerted by brushhead 18A, 18B, 18C.
  • Various pressure and force sensors i.e., force parameter sensors
  • force parameter sensors are known which measure brushing force parameters in different ways, including both mechanical and electrical sensors. Some sensors measure pressure while others measure actual force.
  • Force sensors are generally desirable over pressure sensors because pressure sensors are sensitive to the size of the loaded member (the brushhead) pushing against the sensor and/or the relative positions of the loaded member and the sensor.
  • Pressure sensors can, however, be converted to force sensors by including a shaped protrusion (bump) of a selected area on the sensor to significantly reduce, if not eliminate, the sensitivity of the sensing system to size, shape and/or position of the loaded member (which can in fact be flat).
  • Some sensors use a piezoelectric device to measure the rate of deflection of the sensor and provide velocity information concerning movement of the member, rather than force or pressure information.
  • Still other sensors use strain gauges, some of which incorporate temperature compensation elements.
  • there are sensors which make use of particular materials which include a characteristic, such as electrical resistance, which changes upon application of pressure or force over a given range.
  • handle portion 12 further includes an alarm mechanism 34 that is coupled to processing unit 26.
  • Alarm mechanism 34 may be an audible alarm mechanism, such as a speaker, that is structured to generate an audible alarm under the control of processing unit 26.
  • alarm mechanism 34 may be a visual alarm mechanism, such as one or more LEDs, that is/are structured to generate a visual alarm under the control of processing unit 26.
  • the alarm may be implemented by processing unit 26 modifying the motor drive mode of motor 14 to give a different sensation in the user's mouth, such as a lowered amplitude and/or a pulsing of the motor 14.
  • processing unit 26 is programmed to receive the measured force value generated by sensor element 28 and compare that value to a force trigger level that is stored by processing unit 26. If the measured force exceeds the stored force trigger level, processing unit 26 will cause an alarm to be generated, such as by alarm mechanism 34 or by modifying the motor drive as described herein.
  • toothbrush 10 as just described is structured to provide feedback to the user when the brushing force being employed exceeds the stored force trigger level, which may be a level determined to be safe and appropriate for the user to use.
  • processing unit 26 may store multiple force trigger levels for different applications, and according to an aspect of the disclosed concept, described in greater detail herein, the particular stored force trigger level that is employed at any particular time may be automatically selected by toothbrush 10.
  • each brushhead 18A, 18B, 18C includes a recognition element 36 structured to enable the particular brushhead 18A, 18B, 18C to be recognized/identified by processing unit 26.
  • recognition element 36 is a readonly memory device which is programmed with a unique identification number for identifying the particular brushhead 18A, 18B, 18C in which it is provided.
  • brushheads 18A, 18B, 18C and handle portion 12 both include electrically conductive elements 38 which provide a signal communications capability between memory element 36 and processing unit 26. This signal
  • processing unit 26 is able to automatically identify which particular brushhead 18A, 18B, 18C is attached to it at any time. It will be appreciated, however, that the identification and signal
  • communications configuration shown in FIG. 2 is exemplary only and that alternative recognition elements 36 and mechanisms for transmitting identification information to processing unit 26, such as, without limitation, optical, mechanical, or FID
  • processing unit 26 stores certain information for each brushhead 18A, 18B, 18C in, for example, a lookup table format.
  • processing unit 26 stores the following information for each brushhead 18A, 18B, 18C: (i) a brushing mode to be used with the brushhead, and (ii) a force trigger level to be used with the brushhead.
  • processing unit 26 is structured to cause toothbrush 10 to operate in a particular manner in connection with a selected brushing mode.
  • each brushing mode may have one or more of an amplitude of movement, a frequency of operation, and/or a timer value (i.e., the time after which an alarm will be sounded) associated with it, with toothbrush 10 being controlled to operate in accordance with the parameters of the selected brushing mode by processing unit 26.
  • a timer value i.e., the time after which an alarm will be sounded
  • the lookup table implemented in processing unit 26 may be as set forth in table 1 below.
  • the parameters that are stored in connection with each brushhead 18A, 18B, 18C may be selectively determined by a user by inputting the information into processing unit 26.
  • a computing device 40 such as, without limitation, a smart phone or a tablet computer, may be provided with an application that enables wireless communication with processing unit 26 through a wireless communications module 42 provided within handle portion 12.
  • wireless communications module 42 may be a Bluetooth® module that enables Bluetooth® pairing between computing device 40 and handle portion 12.
  • computing device 40 may be a base station associated with toothbrush 10 (e.g. a charging station) that is provided with a suitable user interface and communications connection for inputting such information into processing unit 26.
  • FIG. 3 is a flowchart illustrating a method of operation of toothbrush 10 according to one exemplary embodiment wherein the brushing mode and force trigger level for toothbrush 10 are automatically selected based upon the particular brushhead 18A, 18B, 18C that is coupled to handle portion 12.
  • the method begins at step 50, after a particular brushhead 18A, 18B, 18C has been attached to handle portion 12.
  • processing unit 26 identifies the particular brushhead 18A, 18B, 18C based upon the unique identification information that is received by processing unit 26 as described elsewhere herein.
  • processing unit 26 consults the information stored therein (e.g. in the lookup table) to determine the brushing mode and the force trigger level that are to be used with the identified brushhead 18A, 18B, 18C.
  • processing unit 26 sets the current brushing mode and force trigger level of toothbrush 10 based upon the identified brushhead determined at step 52. Thereafter, processing unit 26 will control operation of toothbrush 10 in accordance with the parameters of the set brushing mode and force trigger level. For example, using the sample lookup table provided in Table 1 above, if brushhead 18A is attached to handle portion 12, the brushing mode will be set to "normal" and the force trigger level will be set to 2N. As a result, when toothbrush 10 is activated, motor 14 will cause a moderate amplitude motion to be applied to brushhead 18, and will cause the force trigger level to be set to 2N. Thereafter, the force detected by sensor element 28 will be continuously monitored by processing unit 26, if the detected force exceeds the set force trigger level, processing unit 26 will cause an alarm to be generated by alarm mechanism 34 as described herein.
  • toothbrush 10 shown in FIGS. 1 and 2 and the method of operation shown in FIG. 3 provide a system wherein brushing mode and force trigger level for a power toothbrush are automatically adjusted and established based upon the particular brushhead that is attached to handle portion 12.
  • FIG. 4 is a flowchart illustrating a method of operation of toothbrush 10 according to another, alternative exemplary embodiment wherein the force trigger level for toothbrush 10 is automatically set based upon the brushing mode that is selected by a user.
  • the brushing mode for toothbrush 10 may be selected in any of a number of different ways. For example, a user may select the current brushing mode from a number of possible brushing modes using a user interface provided as part of handle portion 12. As another example, a user may select the current brushing mode using computing device 40 as described herein to communicate the selected current brushing mode to processing unit 26. As will be appreciated, this option may be implemented using an application designed for that purpose that is run on computing device 40.
  • processing unit 26 stores a corresponding force trigger level for each possible brushing mode. As described elsewhere herein, this information may be stored by processing unit 26 using a suitable lookup table and may be selectively modified using, for example and without limitation, computing device 40.
  • processing unit 26 determines the brushing mode that is selected by a user.
  • the brushing mode may be selected by a user using a user interface provided as part of handle portion 12 or by using computing device 40 to wirelessly communicate the brushing mode selection to processing unit 26.
  • processing unit 26 determines the force trigger level that corresponds to the selected brushing mode. As described herein, in the exemplary embodiment, processing unit 26 makes this determination based upon a lookup table stored thereby.
  • processing unit 26 sets the current brushing mode and force trigger level for toothbrush 10 based on the selected brushing mode and the determined force trigger level.
  • toothbrush 10 shown in FIGS. 1 and 2 and the method of operation shown in FIG. 4 provide a system wherein force trigger level for a power toothbrush is automatically adjusted and established based upon a user selected brushing mode.
  • toothbrush 10 may have only one mode (such as a low end model), or may have several modes, and the force trigger level for each of the modes may be set using a user interface provided as part of toothbrush 10 or an application designed for that purpose that is run on computing device 40.
  • the particular force trigger level for each of the modes may be the same (common among all of the modes) or may be different for different modes.
  • toothbrush 10 may be provided with a number of sensing elements for determining and tracking the position in the user's mouth at which toothbrush 10 is being used at any particular time (e.g. front teeth, rear teeth, etc.).
  • processing unit 26 may store for each of a number of particular positions in the user's mouth (as sensed by toothbrush 10) a particular force trigger level that is to be used when brushing at that position and/or a particular brushing mode that is to be used when brushing at that position.
  • the particular force trigger level and/or brushing mode for each stored mouth position may be set using a user interface provided as part of toothbrush 10 or an application designed for that purpose that is run on computing device 40.
  • the brushing mode and force trigger level used to trigger an alarm could be customized by detected brushing position in the mouth.
  • One example would be high trigger level & whitening mode when on the front teeth, but sensitive mode & low force trigger level when brushing the molars are sensitive due to gum recession.
  • any reference signs placed between parentheses shall not be construed as limiting the claim.
  • the word “comprising” or “including” does not exclude the presence of elements or steps other than those listed in a claim.
  • several of these means may be embodied by one and the same item of hardware.
  • the word “a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • any device claim enumerating several means several of these means may be embodied by one and the same item of hardware.
  • the mere fact that certain elements are recited in mutually different dependent claims does not indicate that these elements cannot be used in combination.

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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

L'invention concerne une brosse à dents électrique (10) qui comprend une tête de brosse (18), un capteur (28) pour mesurer un paramètre de force indicatif d'une force exercée par la tête de brosse et une partie de manche (12) comprenant un moteur (14) pour entraîner la tête de brosse et une unité de traitement (26) structurée pour commander le fonctionnement de la brosse à dents électrique. L'unité de traitement (26) est en outre structurée pour : (i) recevoir des informations identifiant un mode de brossage pour la brosse à dents, (ii) établir un seuil de déclenchement de force pour la brosse à dents électrique, lequel seuil de déclenchement de force correspond au mode de brossage, (iii) faire entraîner par le moteur la tête de brosse conformément à un ou plusieurs paramètres associés au mode de brossage, (iv) recevoir le paramètre de force, et (v) déterminer s'il faut déclencher une alarme en fonction du seuil de déclenchement de force et du paramètre de force.
PCT/IB2015/057933 2014-10-28 2015-10-15 Brosse à dents électrique avec réglage automatique de seuil de déclenchement de force Ceased WO2016067151A1 (fr)

Applications Claiming Priority (2)

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US201462069532P 2014-10-28 2014-10-28
US62/069,532 2014-10-28

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WO2016067151A1 true WO2016067151A1 (fr) 2016-05-06

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110101478A (zh) * 2019-05-24 2019-08-09 上海谷感智能科技有限公司 一种带压力监测的电动牙刷及工作方法
CN110494063A (zh) * 2017-03-17 2019-11-22 皇家飞利浦有限公司 用于将个人护理设备附件与特定用户关联的系统和方法
WO2021018893A1 (fr) * 2019-07-30 2021-02-04 Koninklijke Philips N.V. Procédés et systèmes pour caractériser automatiquement la tête d'un dispositif de soins personnels
CN112402044A (zh) * 2020-11-16 2021-02-26 浙江万里学院 一种电动牙刷音视频儿童教育方法
CN116602780A (zh) * 2023-05-30 2023-08-18 上海艾为电子技术股份有限公司 压感检测方法、电子设备、可读存储介质和芯片

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JP2867501B2 (ja) * 1989-11-30 1999-03-08 松下電工株式会社 電動歯ブラシ
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US20030101526A1 (en) * 2001-12-04 2003-06-05 Alexander Hilscher Dental cleaning device
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EP2550935A1 (fr) * 2011-07-25 2013-01-30 Braun GmbH Dispositif de soins personnels

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Publication number Priority date Publication date Assignee Title
JP2867501B2 (ja) * 1989-11-30 1999-03-08 松下電工株式会社 電動歯ブラシ
WO2002071971A1 (fr) * 2001-03-14 2002-09-19 Braun Gmbh Dispositif de nettoyage dentaire
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EP2550935A1 (fr) * 2011-07-25 2013-01-30 Braun GmbH Dispositif de soins personnels

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110494063A (zh) * 2017-03-17 2019-11-22 皇家飞利浦有限公司 用于将个人护理设备附件与特定用户关联的系统和方法
US10932556B2 (en) 2017-03-17 2021-03-02 Koninklijke Philips N.V. Systems and methods for associating personal care device attachments with particular users
RU2753570C2 (ru) * 2017-03-17 2021-08-17 Конинклейке Филипс Н.В. Системы и способы постановки в соответствие насадок устройств личной гигиены конкретным пользователям
CN110494063B (zh) * 2017-03-17 2022-09-16 皇家飞利浦有限公司 用于将个人护理设备附件与特定用户关联的系统和方法
CN110101478A (zh) * 2019-05-24 2019-08-09 上海谷感智能科技有限公司 一种带压力监测的电动牙刷及工作方法
WO2021018893A1 (fr) * 2019-07-30 2021-02-04 Koninklijke Philips N.V. Procédés et systèmes pour caractériser automatiquement la tête d'un dispositif de soins personnels
CN112402044A (zh) * 2020-11-16 2021-02-26 浙江万里学院 一种电动牙刷音视频儿童教育方法
CN116602780A (zh) * 2023-05-30 2023-08-18 上海艾为电子技术股份有限公司 压感检测方法、电子设备、可读存储介质和芯片

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