Control method and device of electric toothbrush and electric toothbrush

Abstract

This application provides a control method, device, and electric toothbrush for an electric toothbrush, relating to the technical field of electric toothbrushes. The method comprises obtaining a deformation signal collected by a deformation sensor during operation; and issuing a prompt signal when the deformation signal satisfies a target condition, wherein the target condition indicates that a brush head connected to a drive shaft is subjected to a bite force. The technical solution provided by this application can help parents promptly detect children biting the electric toothbrush head, thereby helping parents guide their children to develop good brushing habits.

Description

Technical Field

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

[0002] With the rapid development of science and technology and medicine, people's living standards have been greatly improved, and their awareness of preventive health care has been continuously enhanced. People are also paying more and more attention to oral self-care. The most important self-care method to remove plaque on the tooth surface and maintain oral hygiene is brushing.

[0003] Compared to traditional toothbrushes, electric toothbrushes have advantages such as better cleaning ability, greater stability, and more uniform vibration. Therefore, more and more people are starting to use electric toothbrushes. Furthermore, compared to traditional toothbrushes, electric toothbrushes are easier and more convenient to use, making them more suitable for children to master. Therefore, many parents equip their children with electric toothbrushes.

[0004] Children may have bad brushing behaviors when brushing their teeth, which will affect the cleaning effect. If this continues for a long time, it will easily lead to tooth decay in children. Therefore, it is important to help parents guide children to develop good brushing habits. Summary of the Invention

[0005] In view of this, the present application provides a control method, device and electric toothbrush for helping parents to promptly detect the behavior of children biting the brush head of the electric toothbrush, thereby helping parents guide children to develop good brushing habits.

[0006] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a method for controlling an electric toothbrush, wherein a deformation sensor is provided on a driving shaft of the electric toothbrush, the method comprising:

[0007] In a working state, obtaining a deformation signal collected by the deformation sensor;

[0008] When it is detected that the deformation signal meets a target condition, a prompt signal is issued, where the target condition is used to indicate that the brush head connected to the drive shaft is subjected to a bite force.

[0009] As an optional implementation of the embodiment of the present application, the method further includes:

[0010] detecting energy distribution information of the deformation signal in the frequency domain;

[0011] Determine whether the deformation signal meets a target condition according to the energy distribution information.

[0012] As an optional implementation of the embodiment of the present application, determining whether the deformation signal meets the target condition according to the energy distribution information includes:

[0013] When a first energy peak and a second energy peak are detected within the target frequency band, determining that the deformation signal meets a target condition;

[0014] If the second energy peak is not detected, it is determined that the deformation signal does not meet the target condition.

[0015] As an optional implementation of an embodiment of the present application, the first energy peak corresponds to the vibration frequency of the electric toothbrush, the frequency corresponding to the second energy peak is greater than the frequency corresponding to the first energy peak, and the energy value of the second energy peak is greater than the target value.

[0016] As an optional implementation of the embodiment of the present application, detecting the energy distribution information of the deformation signal in the frequency domain includes:

[0017] converting the deformation signal into a digital signal;

[0018] Converting the digital signal into a frequency domain signal;

[0019] An energy peak of the frequency domain signal is detected.

[0020] As an optional implementation of the embodiment of the present application, the prompt signal includes at least one of the following signals: a vibration signal, a sound signal, and a light signal.

[0021] In a second aspect, an embodiment of the present application provides a control device for an electric toothbrush, wherein a deformation sensor is provided on a drive shaft of the electric toothbrush, and the device comprises:

[0022] An acquisition module, configured to acquire the deformation signal collected by the deformation sensor in a working state;

[0023] A detection module, configured to detect whether the deformation signal satisfies a target condition;

[0024] The prompt module is used to send a prompt signal when the detection module detects that the deformation signal meets the target condition, and the target condition is used to indicate that the brush head connected to the driving shaft is subjected to a bite force.

[0025] As an optional implementation of the embodiment of the present application, the detection module is specifically configured to:

[0026] detecting energy distribution information of the deformation signal in the frequency domain;

[0027] Determine whether the deformation signal meets a target condition according to the energy distribution information.

[0028] As an optional implementation of the embodiment of the present application, the detection module is specifically configured to:

[0029] When a first energy peak and a second energy peak are detected within the target frequency band, determining that the deformation signal meets a target condition;

[0030] If the second energy peak is not detected, it is determined that the deformation signal does not meet the target condition.

[0031] As an optional implementation of an embodiment of the present application, the first energy peak corresponds to the vibration frequency of the electric toothbrush, the frequency corresponding to the second energy peak is greater than the frequency corresponding to the first energy peak, and the energy value of the second energy peak is greater than the target value.

[0032] As an optional implementation of the embodiment of the present application, the detection module is specifically configured to:

[0033] converting the deformation signal into a digital signal;

[0034] Converting the digital signal into a frequency domain signal;

[0035] An energy peak of the frequency domain signal is detected.

[0036] As an optional implementation of the embodiment of the present application, the prompt signal includes at least one of the following signals: a vibration signal, a sound signal, and a light signal.

[0037] In a third aspect, an embodiment of the present application provides an electric toothbrush comprising: a toothbrush body and a brush head, wherein the toothbrush body is provided with a controller and a drive assembly connected to each other, the drive assembly is connected to a drive shaft extending from the toothbrush body, the brush head is connected to the drive shaft, and a deformation sensor is provided on the drive shaft; the controller is used to execute the control method of the electric toothbrush described in any one of the above-mentioned first aspects.

[0038] As an optional implementation of the embodiment of the present application, the deformation sensor is located inside the toothbrush body.

[0039] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a memory and a processor, the memory being used to store a computer program; the processor being used to execute the method described in the first aspect or any embodiment of the first aspect when calling the computer program.

[0040] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method described in the first aspect or any embodiment of the first aspect is implemented.

[0041] In a sixth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on the control device of an electric toothbrush, the control device of the electric toothbrush executes the control method of the electric toothbrush described in any one of the above-mentioned first aspects.

[0042] The technical solution provided in the embodiment of the present application is that the electric toothbrush can obtain the deformation signal collected by the deformation sensor when it is in working state; when it is detected that the deformation signal meets the target conditions, a prompt signal is issued, which can help parents promptly discover the behavior of children biting the brush head of the electric toothbrush, thereby helping parents guide children to develop good brushing habits. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the structure of an electric toothbrush provided in an embodiment of the present application;

[0044] Figure 2 A flow chart of a method for controlling an electric toothbrush according to an embodiment of the present application;

[0045] Figure 3 A schematic diagram of the vibration of the cantilever beam structure provided in an embodiment of the present application;

[0046] Figure 4 A schematic diagram of the vibration of the fixed end beam structure provided in an embodiment of the present application;

[0047] Figure 5 A comparison chart of the results of the control method for a sample electric toothbrush provided in an embodiment of the present application;

[0048] Figure 6 A schematic diagram of the structure of a control device for an electric toothbrush provided in an embodiment of the present application;

[0049] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following describes the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. The terms used in the implementation methods of the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0051] First, we will introduce the electric toothbrush involved in the embodiment of this application. Figure 1 , Figure 1 This is a schematic structural diagram of the electric toothbrush provided in an embodiment of the present application.

[0052] like Figure 1As shown, the electric toothbrush may include a toothbrush body and a brush head. The toothbrush body is provided with a controller and a drive assembly that are interconnected. The drive assembly is connected to a drive shaft extending from the toothbrush body. The brush head is connected to the drive shaft, and a deformation sensor is provided on the drive shaft.

[0053] The controller can control the working state of the electric toothbrush.

[0054] The driving assembly may include a motor and a transmission mechanism connected to a driving shaft, etc. The driving assembly may drive the driving shaft to generate vibration, thereby driving the brush head to work.

[0055] The toothbrush body may include a power button (not shown) and buttons with different functions (not shown, such as cleaning mode, whitening mode, and care mode, etc.). Users can select a brushing mode that suits them by pressing the buttons, thereby meeting the different brushing needs of users. It is understandable that the power button and buttons with different functions may exist at the same time, that is, press the power button first, and then press the function button to make the electric toothbrush enter different function modes and start working; or there may be only the function button, and when the user presses the function button, the electric toothbrush may start working directly in this mode. This embodiment of the present application does not specifically limit this. At the same time, the electric toothbrush may also include prompt devices such as a prompt light (not shown) and / or a speaker (not shown). When the user bites the toothbrush head while brushing his teeth, the controller may control the prompt device to send a prompt signal.

[0056] The deformation sensor can detect the deformation of the drive shaft. It can be located outside the toothbrush body or inside the toothbrush body to extend the service life.

[0057] The brush head can be made of soft materials, such as food-grade silicone soft brush head or DuPont nylon soft bristles, etc., and the embodiments of the present application do not specifically limit this.

[0058] The electric toothbrush provided in the embodiment of the present application can enable the user to select a brushing mode suitable for him or her according to his or her needs when the user is a teenager or an elderly person; when the user is a child, the user can select a brushing mode suitable for him or her according to his or her needs and can also send a prompt signal when the user bites the toothbrush head, thereby helping parents guide children to develop good brushing habits.

[0059] The electric toothbrush can collect deformation signals through a deformation sensor, and the controller can detect whether the brush head has been bitten based on the deformation signals. When the deformation signal is detected, a prompt signal is issued. This process is described in detail below.

[0060] Figure 2 A flow chart of a control method for an electric toothbrush provided in an embodiment of the present application is shown as follows: Figure 2As shown, the control method of the electric toothbrush provided in the embodiment of the present application may include the following steps:

[0061] S110 . In a working state, a deformation signal collected by a deformation sensor is obtained.

[0062] Specifically, the working state is the brushing state that the electric toothbrush enters after selecting a function.

[0063] The power of the electric toothbrush is provided by a motor, and the power of the motor is output through the drive shaft. By attaching the deformation sensor to the drive shaft, the deformation of the drive shaft can be detected and the deformation signal of the drive shaft can be captured.

[0064] S120: Detect whether the deformation signal meets the target condition. If yes, execute step S130; if not, execute step S110.

[0065] Among them, the target condition is used to indicate that the brush head connected to the drive shaft is subjected to a bite force; that is, when it is detected that the deformation signal meets the target condition, it can be considered that the brush head is bitten, and a prompt signal can be issued at this time to remind the toothbrush user or the toothbrush user's family, so that the toothbrush user can develop good brushing habits; when it is detected that the deformation signal does not meet the target condition, the deformation signal collected by the deformation sensor can continue to be obtained.

[0066] As a first optional implementation manner, after acquiring the deformation signal collected by the deformation sensor, the controller can detect the amplitude of the deformation signal in the time domain, and determine whether the deformation signal meets the target condition based on the amplitude detection result.

[0067] Specifically, since the deformation sensor can capture the deformation signal of the drive shaft in real time, the amplitude of the deformation signal during normal brushing is set as the target condition. The target condition can be determined based on the average value of the amplitude of the deformation signal during normal brushing, or based on the maximum value of the amplitude of the deformation signal during normal brushing. The embodiment of the present application does not specifically limit this.

[0068] When the brush head is bitten, the force on the drive shaft increases, and therefore the amplitude of the deformation signal increases, exceeding the amplitude of the deformation signal during normal brushing. Therefore, whether the brush head is bitten can be determined by determining whether the amplitude of the deformation signal exceeds the target condition.

[0069] As a second optional implementation, after acquiring the deformation signal collected by the deformation sensor, the controller can detect energy distribution information of the deformation signal in the frequency domain and determine whether the deformation signal meets the target condition based on the energy distribution information.

[0070] Specifically, the deformation signal can be converted into a digital signal through analog-to-digital conversion, and the digital signal can be converted into a frequency domain signal through algorithms such as Fourier transform, Laplace transform, and Z transform; then the energy peak of the frequency domain signal can be detected through a spectrum peak search algorithm.

[0071] In normal state, the electric toothbrush can be simplified as a cantilever beam, which is characterized by one end being fixed and the other end being free. The standing wave deformation is as follows: Figure 3 As shown in the figure, the horizontal axis represents the beam length, the origin "0" represents the fixed position of the root of the electric toothbrush drive shaft, and the vertical axis represents the amplitude.

[0072] Specifically, if Figure 3 The three curves shown show the fixed end on the left and the free end on the right. "First Order," "Second Order," and "Third Order" represent the oscillation states of the drive shaft. "First Order" has the lowest oscillation frequency, "Second Order" has a higher oscillation frequency than "First Order," and "Third Order" has an even higher oscillation frequency.

[0073] When the electric toothbrush head is bitten, it can be simplified into a fixed-end beam, which is characterized by fixed ends. The standing wave deformation is as follows: Figure 4 As shown in the figure. The meanings of the horizontal coordinate, the origin "0" and the vertical coordinate are the same as those of Figure 3 The above is the same and will not be repeated here.

[0074] Specifically, if Figure 4 The three lines shown have fixed ends on the left and right. The meanings of "first order", "second order" and "third order" are as follows Figure 3 The above is not repeated here.

[0075] By comparison Figure 3 and Figure 4 It can be found that the deformation modes of the fixed-end beam and the cantilever beam are significantly different under vibration, so their energy distribution in the frequency domain will also be quite different. Under normal conditions, since the proportion of energy contained in the "first-order" component frequency is often much larger than the proportion of energy contained in other high-order component frequencies, the "first-order" component can usually be used as a typical characteristic value. Taking the first-order vibration as an example, if the beam length is L, the vibration wavelength of the cantilever beam is 4L, and the vibration wavelength of the fixed-end beam is 2L. Different vibration wavelengths lead to different spectral energy distributions. When the beam length is the same, the wavelength of the fixed-end beam has a higher first-order vibration frequency. Therefore, it is possible to determine whether the deformation signal meets the target conditions based on the energy peak detection results, and then determine whether the brush head is bitten.

[0076] Specifically, if Figure 5As shown in (a), the electric toothbrush itself has a natural frequency. Under normal conditions, when the vibration frequency of the motor is the same as / close to the natural frequency of the electric toothbrush, resonance occurs. At a certain frequency, the energy peak reaches a maximum value. This energy can be used as the cleaning power of the electric toothbrush, driving the electric toothbrush to work.

[0077] like Figure 5 As shown in (b), when the brush head is bitten, the structure of the electric toothbrush changes, so the natural frequency of the entire electric toothbrush system will also change. At this time, two energy peaks will appear on the spectrum. The presence of the second energy peak can be used to determine whether the brush head has been bitten.

[0078] The deformation signal can include low-frequency and high-frequency signals. The low-frequency signal reflects the deformation of the brush head due to force, characterized by a long duration and slow change rate. The high-frequency signal reflects the state of the brush head, such as vibration frequency and fixed state. The high-frequency signal is related to the natural frequency mentioned above. When the natural frequency changes, the two energy peaks mentioned above are mainly reflected in the spectrum of the high-frequency signal.

[0079] Specifically, when the first energy peak and the second energy peak in the target frequency band (high frequency band) are detected, it can be determined that the deformation signal meets the target condition; when the second energy peak is not detected, it can be determined that the deformation signal does not meet the target condition.

[0080] The first energy peak corresponds to the vibration frequency of the electric toothbrush, and the frequency corresponding to the second energy peak is greater than the frequency corresponding to the first energy peak.

[0081] In order to improve the accuracy of the detection result, when the energy value of the detected second energy peak is greater than the target value, it can be considered that the second energy peak is detected.

[0082] The target value may be one or more, and each vibration frequency may correspond to a target value.

[0083] As mentioned above, the deformation sensor can be located outside or inside the toothbrush body. When the deformation sensor is located outside the toothbrush body, when the brush head is bitten, the deformation sensor can detect a larger deformation. In this case, the first implementation method mentioned above can be used to detect whether the deformation signal meets the target condition. When the deformation sensor is located inside the toothbrush body, when the brush head is bitten, the deformation detected by the deformation sensor is relatively small. In this case, the second implementation method mentioned above can be used to detect whether the deformation signal meets the target condition, thereby improving the accuracy of the detection result. Of course, when the deformation sensor is located outside the toothbrush body, the second implementation method can also be used to detect whether the deformation signal meets the target condition.

[0084] It can be understood that detecting whether the deformation signal meets the target conditions is not limited to the above two implementation methods, and other implementation methods can also be used. For example, the above amplitude detection results and energy peak detection results can be combined to detect whether the deformation signal meets the target conditions, or other signal characteristics of the deformation signal can be used to detect whether the deformation signal meets the target conditions.

[0085] S130: Send a prompt signal.

[0086] Specifically, the prompt signal may include at least one of the following signals: a vibration signal, a sound signal, and a light signal.

[0087] When the prompt signal includes a vibration signal, the vibration frequency and / or vibration amplitude of the vibration signal may be clearly distinguishable from the vibrations in various functional modes.

[0088] Those skilled in the art will appreciate that the above embodiments are exemplary and are not intended to limit the present application. Where possible, the execution order of one or more of the above steps can be adjusted, or selectively combined to obtain one or more other embodiments. Those skilled in the art can select and combine any of the above steps as needed, and any combination that does not deviate from the essence of the present application falls within the scope of protection of the present application.

[0089] The control method of the electric toothbrush provided in the embodiment of the present application obtains the deformation signal collected by the deformation sensor in the working state; when it is detected that the deformation signal meets the target condition, a prompt signal is issued. The target condition is used to indicate that the brush head connected to the drive shaft is subjected to a bite force, which can help parents promptly discover the behavior of children biting the brush head of the electric toothbrush, thereby helping parents guide children to develop good brushing habits.

[0090] Based on the same inventive concept, as an implementation of the above method, an embodiment of the present application provides a control device for an electric toothbrush. The device embodiment corresponds to the above method embodiment. For ease of reading, the present device embodiment will no longer repeat the details of the above method embodiment one by one, but it should be clear that the device in this embodiment can correspond to and implement all the contents of the above method embodiment.

[0091] Figure 6 A schematic diagram of the structure of the control device of the electric toothbrush provided in the embodiment of the present application is shown as follows: Figure 6 As shown, a deformation sensor is provided on the driving shaft of the electric toothbrush provided in this embodiment, and the control device of the electric toothbrush includes:

[0092] An acquisition module 610 is configured to acquire a deformation signal collected by a deformation sensor in a working state;

[0093] Detection module 620, used to detect whether the deformation signal meets the target condition;

[0094] The prompt module 630 is used to send a prompt signal when the detection module 620 detects that the deformation signal meets the target condition, and the target condition is used to indicate that the brush head connected to the drive shaft is subjected to a bite force.

[0095] As an optional implementation of the embodiment of the present application, the detection module 620 is specifically configured to:

[0096] Detect the energy distribution information of the deformation signal in the frequency domain;

[0097] Determine whether the deformation signal meets the target conditions based on the energy distribution information.

[0098] As an optional implementation of the embodiment of the present application, the detection module 620 is specifically configured to:

[0099] When a first energy peak and a second energy peak are detected within the target frequency band, determining that the deformation signal meets the target condition;

[0100] In a case where the second energy peak is not detected, it is determined that the deformation signal does not meet the target condition.

[0101] As an optional implementation of an embodiment of the present application, the first energy peak corresponds to the vibration frequency of the electric toothbrush, the frequency corresponding to the second energy peak is greater than the frequency corresponding to the first energy peak, and the energy value of the second energy peak is greater than the target value.

[0102] As an optional implementation of the embodiment of the present application, the detection module 620 is specifically configured to:

[0103] Converting deformation signals into digital signals;

[0104] Convert digital signals into frequency domain signals;

[0105] Detect energy peaks in frequency domain signals.

[0106] As an optional implementation of the embodiment of the present application, the prompt signal includes at least one of the following signals: a vibration signal, a sound signal, and a light signal.

[0107] The control device of the electric toothbrush provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0108] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0109] Based on the same inventive concept, an embodiment of the present application also provides an electronic device. Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, such as Figure 7 As shown, the electronic device provided in this embodiment includes: a memory 710 and a processor 720, the memory 710 is used to store computer programs; the processor 720 is used to execute the method described in the above method embodiment when calling the computer program.

[0110] The electronic device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effects are similar, which will not be repeated here.

[0111] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the method described in the above method embodiment when the computer program is executed by a processor.

[0112] An embodiment of the present application further provides a computer program product, which, when executed on a control device of an electric toothbrush, enables the control device of the electric toothbrush to implement the method described in the above method embodiment.

[0113] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted via the computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, hard disk or tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0114] Those skilled in the art will appreciate that all or part of the process steps in the above-described method embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program can include the process steps in the above-described method embodiments. The aforementioned storage medium can include various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

[0115] The naming or numbering of steps in this application does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0116] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0117] In the embodiments provided in this application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0118] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0119] In the description of this application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0120] Furthermore, in the description of this application, unless otherwise specified, "plurality" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c" can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0121] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0122] In addition, in the description of this application specification and the appended claims, the terms "first," "second," "third," etc. are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that shown or described herein.

[0123] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling an electric toothbrush, characterized in that: A deformation sensor is provided on the driving shaft of the electric toothbrush, and the method includes: In a working state, obtaining a deformation signal collected by the deformation sensor; detecting energy distribution information of the deformation signal in the frequency domain; determining, based on the energy distribution information, whether the deformation signal satisfies a target condition, the target condition being used to indicate that a brush head connected to the drive shaft is subjected to a bite force; When it is detected that the deformation signal meets the target condition, a prompt signal is issued; When the brush head is bitten, the natural frequency of the electric toothbrush changes, and two energy peaks appear in the spectrum. Determining whether the deformation signal meets the target condition based on the energy distribution information includes: When a first energy peak and a second energy peak are detected within the target frequency band, determining that the deformation signal meets a target condition; If the second energy peak is not detected, it is determined that the deformation signal does not meet the target condition.

2. The method according to claim 1, characterized in that The first energy peak corresponds to the vibration frequency of the electric toothbrush, the frequency corresponding to the second energy peak is greater than the frequency corresponding to the first energy peak, and the energy value of the second energy peak is greater than the target value.

3. The method according to claim 1, characterized in that The detecting the energy distribution information of the deformation signal in the frequency domain includes: converting the deformation signal into a digital signal; Converting the digital signal into a frequency domain signal; An energy peak of the frequency domain signal is detected.

4. The method according to any one of claims 1 to 3, characterized in that The prompt signal includes at least one of the following signals: a vibration signal, a sound signal, and a light signal.

5. A control device for an electric toothbrush, characterized in that: The driving shaft of the electric toothbrush is provided with a deformation sensor, and the control device includes: An acquisition module, configured to acquire the deformation signal collected by the deformation sensor in a working state; a detection module, configured to detect energy distribution information of the deformation signal in the frequency domain; and determine whether the deformation signal satisfies a target condition based on the energy distribution information, wherein the target condition is configured to indicate that a brush head connected to the drive shaft is subjected to a bite force; A prompt module, configured to send a prompt signal when the detection module detects that the deformation signal meets the target condition; When the brush head is bitten, the natural frequency of the electric toothbrush changes, and two energy peaks appear in the spectrum. The detection module is specifically used to: When a first energy peak and a second energy peak are detected within the target frequency band, determining that the deformation signal meets a target condition; If the second energy peak is not detected, it is determined that the deformation signal does not meet the target condition.

6. An electric toothbrush, characterized in that: include: A toothbrush body and a brush head, wherein the toothbrush body is provided with a controller and a drive assembly connected to each other, the drive assembly is connected to a drive shaft extending from the toothbrush body, the brush head is connected to the drive shaft, and a deformation sensor is provided on the drive shaft; the controller is used to execute the method described in any one of claims 1 to 4.

7. The electric toothbrush according to claim 6, characterized in that The deformation sensor is located in the toothbrush body.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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