Electric toothbrush and control method thereof

Abstract

According to the electric toothbrush and the control method thereof, a light source is adopted to emit a spectral signal within a preset wavelength range to irradiate the interior of an oral cavity, a spectral sensor receives the reflected and / or scattered spectral signal, converts the spectral signal into an electric signal, processes and analyzes the electric signal, recognizes the state of a tooth through a preset algorithm or model, and determines the state of the tooth. And the operation parameters are automatically adjusted according to the identification result. According to the tooth cleaning device, a personalized cleaning mode can be achieved, different swing amplitudes, frequencies and light rays are used according to different chromaticity, health conditions and gingival states of tooth surfaces, the cleaning effect is improved, and meanwhile the cleaning experience is more comfortable.

Description

Technical Field

[0001] The invention belongs to the technical field of oral cleaning, and in particular relates to an electric toothbrush and a control method thereof. Background Art

[0002] An electric toothbrush is a toothbrush that can automatically swing its brush head. It can effectively clean the surface of teeth and the gaps between teeth and improve oral hygiene. There are two main types of electric toothbrushes on the market: sonic electric toothbrushes and ultrasonic electric toothbrushes. Sonic electric toothbrushes use the vibrations generated by sound waves to clean teeth. They can generally swing about 30,000 times per minute. The cleaning power is strong, but it can also easily cause bleeding gums or tooth sensitivity. Ultrasonic electric toothbrushes use the high-frequency vibrations generated by ultrasound to clean teeth. They can generally swing about 120 million times per minute. The cleaning power is weaker, but the damage to gums and teeth is less.

[0003] Regardless of the type of electric toothbrush, the operating parameters of the electric toothbrush cannot be adjusted according to the condition of the teeth, resulting in incomplete cleaning or excessive cleaning of some areas of the teeth. Summary of the invention

[0004] The object of the present invention is to provide an electric toothbrush and a control method thereof, which are used to solve the technical problem that the existing electric toothbrush cannot adjust the operating parameters of the electric toothbrush according to the state of the teeth, resulting in incomplete cleaning or excessive cleaning of some areas of the teeth.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides an electric toothbrush, comprising a handle and a detachable toothbrush head, wherein a battery, a controller, a data processor, and a vibrator are arranged in the handle; and a spectrum sensor and a light source are arranged in the toothbrush head;

[0007] The controller is used to control the switch and operating parameters of the electric toothbrush, wherein the operating parameters include: the vibration frequency and vibration amplitude of the toothbrush head;

[0008] The battery is used to provide power for the controller, the data processor, the vibrator, the spectrum sensor and the light source;

[0009] The light source emits a spectral signal in a predetermined wavelength range, and the spectral sensor receives the spectral signal reflected and / or scattered by the light source after it is irradiated onto the tooth, and converts it into an electrical signal and sends it to the data processor;

[0010] The data processor obtains tooth state information corresponding to the received electrical signal based on the received electrical signal and the correspondence between the electrical signal and the tooth state stored in advance, and obtains corresponding operating parameters based on the obtained tooth state information and the correspondence between the pre-stored tooth state information and the operating parameters, and then transmits the obtained operating parameters to the controller, and the controller controls the vibrator based on the operating parameters, wherein the tooth state includes: tooth surface characteristics and / or gum state.

[0011] Furthermore, the spectral sensor and the light source are arranged in the toothbrush head, and the irradiation angle of the light source covers the tooth surface within the cleaning range; and / or, the wavelength range of the spectral signal emitted by the light source is 230-5000nm.

[0012] Furthermore, a groove is provided on the toothbrush head, the spectral sensor and the light source are arranged in the groove, the opening of the groove is located at the end of the toothbrush head where the bristles are provided, and the receiving end of the spectral sensor and the emitting end of the light source face the opening of the groove.

[0013] Furthermore, the electric toothbrush further comprises: a light-transmitting layer covering the groove opening, the light-transmitting layer being sealed and connected to the toothbrush head; and / or, a control button connected to the controller signal is also provided on the handle.

[0014] Furthermore, the operating parameters also include: the wavelength emitted by the light source;

[0015] The controller is also used to control the wavelength range emitted by the light source.

[0016] Furthermore, a communication module is signal-connected to the data processor, and the communication module sends the tooth status information and / or operating parameters obtained by the data processor to the cloud or the terminal device.

[0017] Furthermore, the spectral sensor includes any one of a quantum dot spectral sensor, a micro-engraved grating spectral sensor, and a Fabry-Perot cavity interferometer filter sensor.

[0018] Furthermore, the spectral sensor includes: a quantum dot filter and a detector, wherein the quantum dot filter is located on the receiving side of the detector, and the quantum dot filter is used for filtering light in different wavelength bands.

[0019] Furthermore, the electric toothbrush also includes: a timing module connected to the controller and the battery signal, and the operating parameters also include: operating time, and the controller is also used to control the electric toothbrush to turn off and / or control the timing module to emit a prompt sound according to the operating time.

[0020] The present invention provides a control method for an electric toothbrush, comprising:

[0021] receiving the spectral signal reflected and / or scattered by the light source after it is irradiated onto the teeth, and converting it into an electrical signal to send to a data processor;

[0022] The data processor obtains tooth state information corresponding to the received electrical signal based on the received electrical signal and the correspondence between the electrical signal and the tooth state stored in advance, and obtains corresponding operating parameters based on the obtained tooth state information and the correspondence between the pre-stored tooth state information and the operating parameters, and then transmits the obtained operating parameters to the controller, and the controller controls the vibrator according to the operating parameters, wherein the tooth state includes: tooth surface characteristics and / or gum state, and the operating parameters include: vibration frequency and vibration amplitude of the toothbrush head.

[0023] Furthermore, the operating parameters also include: the wavelength emitted by the light source;

[0024] The controller is further used to control the wavelength range emitted by the light source; and / or,

[0025] The operating parameters also include: operating time, and the controller is also used to control the electric toothbrush to turn off and / or control the timing module to emit a prompt sound according to the operating time.

[0026] The beneficial technical effects of the present invention are as follows:

[0027] The light source used in the present invention emits a spectral signal of a predetermined wavelength range to illuminate the inside of the oral cavity, and the spectral sensor receives the reflected and / or scattered spectral signal and converts it into an electrical signal, processes and analyzes the electrical signal, identifies the tooth state through a preset algorithm or model, and automatically adjusts the operating parameters according to the identification result, so as to realize a personalized cleaning mode. According to the different chromaticity, health status and gum status of the tooth surface, different swing amplitudes and frequencies are used to improve the cleaning effect and make the cleaning experience more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0029] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0030] Figure 1 A schematic diagram of the structure of an electric toothbrush provided by an embodiment of the present invention;

[0031] Figure 2 A partial enlarged view of a toothbrush head of an electric toothbrush provided in an embodiment of the present invention;

[0032] Figure 3 Schematic diagram of the position and projection angle of the light source and sensor of the electric toothbrush provided in an embodiment of the present invention.

[0033] In the figure: 1. handle; 2. toothbrush head; 3. battery; 4. controller; 5. data processor; 6. communication module; 7. vibrator; 8. spectral sensor; 9. light source. DETAILED DESCRIPTION

[0034] The following is a description of the implementation of the present invention by specific embodiments. The relevant technical personnel can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The object of the present invention is to provide an electric toothbrush and a control method thereof, which are used to solve the technical problem that the existing electric toothbrush cannot identify the state of the teeth and cannot automatically adjust the operating parameters to adapt to the teeth according to the identification results, thereby causing incomplete cleaning or excessive cleaning of the teeth.

[0036] like Figure 1 As shown, an electric toothbrush provided by the present invention comprises: a toothbrush head 2 and a handle 1, and the toothbrush head 2 and the handle 1 are detachably connected.

[0037] A spectral sensor 8 and a light source 9 are provided in the toothbrush head 2. One preferred installation method is that a groove is provided on the toothbrush head 2. The opening of the groove is located at the end of the toothbrush head 2 where bristles are provided. The bristles are distributed around the groove. The spectral sensor 8 and the light source 9 are placed in the groove. The receiving end of the spectral sensor 8 and the transmitting end of the light source 9 face the opening of the groove. The opening of the groove is covered with a light-transmitting layer. The light-transmitting layer can be a cover plate. For waterproofing, the light-transmitting layer needs to be sealed and connected to the periphery of the groove to ensure the sealing of the groove. Prevent water from entering the groove during use and extend the service life of electrical components such as spectral sensors. It should be noted that because the irradiation angle of the light source 9 needs to cover the tooth surface within the cleaning range, there needs to be a sufficient distance between the bristles and the groove. See Figure 2 The spectrum sensor 8 and the light source 9 are placed in the center of the brush of the toothbrush head, and the irradiation and scanning area covers the center range of the brush.

[0038] The light source 9 emits a spectrum signal of a predetermined wavelength range and shines on the tooth part, and the reflected and / or scattered spectrum signal is received by the spectrum sensor 8, wherein the tooth part includes teeth and gums, and the spectrum sensor 8 converts the received reflected and / or scattered spectrum signal into an electrical signal and sends it to the data processor 5, wherein the light source 9 is preferably an LED light source, which is a light emitting diode that can emit visible light or invisible light and can be used to irradiate the surface of an object to enhance the spectrum signal. The wavelength range of the spectrum signal emitted by the light source is preferably 230-5000nm. For example, it can be 230nm, 300nm, 350nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, 1500nm, 2000nm, 2500nm, 3000nm, 3500nm, 4000nm, 4500nm, 5000nm, etc., which will not be repeated here.

[0039] See also Figure 3 In the embodiment of the present invention, the LED light source projection (detection) angle range is 0°-40°, the LED light source diameter is 0.5-1.5mm, the sensor diameter is 1-3mm, the bristle length is 3-6mm, and the bristle outer diameter is 8-12mm.

[0040] The spectral sensor 8 is a sensor that can measure the reflection and / or scattering spectrum of the surface of an object, and can be used to identify the color, material, composition and other characteristics of the surface of the object. The spectral sensor 8 can be a quantum dot spectral sensor, which includes a quantum dot filter and a detector. The quantum dot filter is located on the receiving side of the detector, and the quantum dot filter is used for filtering light in different bands.

[0041] Of course, the spectral sensor 8 is not limited to a quantum dot spectral sensor, and may also be any one of a micro-engraved grating spectral sensor and a Fabry-Perot cavity interferometer filter sensor.

[0042] In the present invention, a spectral sensor 8 and an LED light source are provided in the toothbrush head. The irradiation angle of the LED light source covers the tooth surface within the cleaning range. When using an electric toothbrush, the LED light source will emit light of different wavelengths to the surface of the teeth or gums. The spectral sensor will receive the spectral signals reflected and / or scattered by the teeth or gums, and convert them into electrical signals and send them to the data processor 5.

[0043] The handle is equipped with a data processor 5, a controller 4, a vibrator 7, and a battery 3. The data processor 5 receives the electrical signal sent by the spectrum sensor 8, obtains the operating parameters through processing, and transmits the operating parameters to the controller 4, and the controller 4 controls the vibrator 7 according to the operating parameters.

[0044] The data processor 5 is a chip or module that can process and analyze input electrical signals, and can be used to realize functions such as color recognition, gum detection, and tooth surface health status recognition. It recognizes the color, gum position, dental plaque, pigmentation, enamel damage, caries and other characteristics of the tooth surface, and adjusts the cleaning mode according to the recognition result, and sends the recognition result and cleaning mode to the display and communication module 6. Among them, different cleaning modes are determined by the combination of parameters such as the swing amplitude and vibration frequency of the toothbrush head, the wavelength emitted by the light source, and the running time.

[0045] Specifically, the data processor 5 obtains the tooth state information corresponding to the received electrical signal according to the received electrical signal and the pre-stored correspondence between the electrical signal and the tooth state, and obtains the corresponding operating parameters according to the obtained tooth state information and the pre-stored correspondence between the tooth state information and the operating parameters, and then transmits the obtained operating parameters to the controller;

[0046] The corresponding relationship between the tooth status information and the operating parameters is obtained by processing and analyzing the electrical signals received from the spectral sensor to obtain tooth spectral data, using a preset algorithm or model, marking a large amount of tooth spectral data and corresponding tooth surface features and / or gum status and other properties, training with Graph Neural Networks technology, and structurally matching the spectral data information with the above-mentioned properties, thereby obtaining the corresponding operating parameters;

[0047] Among them, the tooth surface characteristics include the color of the tooth surface, gum position, dental plaque, pigmentation, enamel damage, caries, etc., and the gum condition includes gum inflammation, red and swollen gums, gum atrophy, bleeding gums, etc.

[0048] The data processor 5 can intelligently adjust the operating parameters according to the recognition results.

[0049] The controller 4 is used to control the switch of the electric toothbrush and the selection of operating parameters, wherein the operating parameters include: the vibration frequency and amplitude of the toothbrush head, the wavelength emitted by the light source, the operating time, etc. The controller can also control the wavelength range emitted by the light source according to the operating parameters;

[0050] The controller 4 can be a group of buttons or a touch screen, etc.

[0051] The vibrator 7 controls the parameters such as the swing amplitude and frequency of the toothbrush head; the vibrator 7 can be a group of motors or other types of vibration devices.

[0052] The battery 3 provides power for the entire electric toothbrush, and the battery 3 may be a rechargeable lithium battery or other types of batteries. Specifically, the battery 3 provides power for the controller 4, the data processor 5, the vibrator 7, the spectrum sensor 8, and the light source 9.

[0053] The electric toothbrush described in this embodiment includes a communication module 6, a timing module and an energy storage module.

[0054] The communication module 6 is a chip or module that can realize wireless communication, and can be used to exchange data with other devices or networks. In the present invention, the communication module 6 can receive the recognition results and cleaning mode data from the data processor 5, and send them to the cloud server or mobile phone and other devices through Bluetooth, Wi-Fi, NFC, etc. for recording, analysis, monitoring and other operations. At the same time, the communication module can also receive instructions or data from the cloud or mobile phone and other devices, and send them to the data processor 5 for execution or processing.

[0055] Specifically, the communication module 6 is disposed in the electric toothbrush and is connected to the data processor signal. The communication module sends the tooth status information and / or operating parameters obtained by the data processor to the cloud or the terminal device.

[0056] The data processor 5 receives the electrical signal from the spectral sensor 8, processes and analyzes it, realizes functions such as color recognition, gum detection, and tooth surface health status recognition, and intelligently adjusts the operating parameters according to the recognition results, and sends the recognition results and operating parameters to the communication module 6. The communication module 6 realizes wireless communication and exchanges data with other devices or networks, which can be Bluetooth, Wi-Fi, NFC, etc.;

[0057] The parameters used by the electric toothbrush for cleaning include the wavelength emitted by the LED light source, and the swing amplitude and frequency of the toothbrush head controlled by the vibrator 7. The data processor sends the recognition result and the cleaning mode information to the communication module 6. The cleaning mode information includes parameter information such as the swing amplitude and vibration frequency of the toothbrush head, the wavelength emitted by the light source, and the running time.

[0058] The communication module 6 will send oral hygiene data including characteristic information such as tooth surface color, gum position, dental plaque, pigmentation, enamel damage, caries, and gum status information to the cloud or mobile phones and other devices for recording, analysis, monitoring, etc., and receive instructions or data from the cloud or mobile phones and other devices, and send them to the data processor 5 for execution or processing.

[0059] During this process, the data processor 5 realizes data processing and analysis, and the communication module 6 performs data transmission, so that the electric toothbrush can send oral hygiene data to the cloud or mobile phones and other devices for storage, processing, monitoring and other operations, and provide corresponding suggestions or warnings based on the data analysis results.

[0060] The electric toothbrush provided by the present invention can record and analyze long-term oral hygiene data, evaluate cleaning effects or improvement plans, and interact with users through devices such as the cloud or mobile phones to provide corresponding suggestions or warnings, thereby enhancing users' oral health awareness and habits.

[0061] A timing module is arranged in the electric toothbrush and connected to the controller and the battery signal. The controller controls the electric toothbrush to turn off and / or controls the timing module to emit a prompt sound according to the running time;

[0062] The timing module can automatically turn off the power or sound a reminder after the recommended brushing time, or remind the user to switch oral areas at regular intervals to ensure even cleaning.

[0063] The energy storage module is arranged in the electric toothbrush and charges the battery.

[0064] In one embodiment of the present invention, a charging port is provided on the handle, and the charging port is connected to the energy storage module. A control button is provided on the handle, and the control button is connected to the controller signal.

[0065] When using the electric toothbrush provided by the present invention, the user can use the control button to trigger the controller 4 to turn on or off the electric toothbrush, trigger the controller 4 to select different cleaning modes (such as a pre-set standard mode, gentle mode, deep mode, etc.), or let the data processor automatically select the most suitable operating parameters.

[0066] In one embodiment of the present invention, the data processor 5 can intelligently adjust the operating parameters according to the recognition result, so the cleaning mode can be intelligently adjusted according to different conditions of the tooth surface.

[0067] The cleaning mode can affect the cleaning effect and experience through the combination of different parameters such as the swing amplitude, vibration frequency and wavelength of the light source of the toothbrush head. In the present invention, the cleaning mode can be intelligently adjusted according to the different conditions of the tooth surface, as follows:

[0068] Different cleaning modes can be used for parts of the tooth surface with different chromaticity. For example, for yellower or darker parts, the identified spectral curve (a data set read in the machine) will be different in the visible light band (400nm-700nm). The algorithm will compare the part of this curve within the visible light band with the tooth chromaticity for functional relationship to obtain the corresponding tooth chromaticity. A larger swing amplitude and medium to high frequency (for example, 30,000-47,000Hz) can be used to increase the cleaning intensity. For whiter or brighter parts, a smaller swing amplitude and low frequency (for example, 20,000-30,000Hz) can be used to reduce wear on the tooth enamel.

[0069] For dental plaque, caries, and enamel damage, the spectral curve will be different in the visible light band and the shallow ultraviolet band (150nm-700nm) to reflect the health of the teeth. Specific cleaning modes can be used. For example, for parts with dental plaque or caries, a larger swing amplitude and medium to high frequency (for example, 30,000-47,000Hz) can be used, and a specific wavelength of light (such as ultraviolet light) can be used to kill bacteria or prevent the development of caries; for parts without dental plaque or caries, a smaller swing amplitude and low frequency (for example, 20,000-30,000Hz) can be used, and a specific wavelength of light (such as infrared light) can be used to promote blood circulation or enhance tooth enamel.

[0070] For gums, a specific cleaning mode can be used. For example, when encountering gums (the recognized spectral curve will be different in the visible light band (400nm-700nm)), the swing amplitude and frequency can be automatically reduced, and light of a specific wavelength (such as infrared light) can be used to protect the gums, reduce bleeding, and promote healing.

[0071] In one embodiment of the present invention, an additional cleaning mode can be set for the electric toothbrush, that is, the cleaning mode can be designed according to different vibration frequencies and usage purposes, such as sensitive teeth cleaning, daily teeth cleaning, whitening, tongue cleaning, etc. The cleaning mode allows users to choose the appropriate brushing method according to their needs to achieve the best effect.

[0072] The electric toothbrush described in the present invention can realize a personalized cleaning mode. According to the different chromaticity, health status and gum condition of the tooth surface, different swing amplitudes, frequencies and lights are used to improve the cleaning effect and make the cleaning experience more comfortable.

[0073] The present invention provides an electric toothbrush, in which a spectral sensor and a light source are arranged in the toothbrush head, so that the spectral signal of the tooth surface can be effectively irradiated and received, and the tooth and gum status can be identified, and the cleaning mode can be intelligently adjusted based on the identification result, that is, the operating parameters of the tooth are automatically adjusted according to the identification result, and the oral hygiene data can be recorded and analyzed, and corresponding suggestions or warnings can be provided. According to the different chromaticity, health status and gum status of the tooth surface, different swing amplitudes, frequencies and lights can be used to improve the cleaning effect and make the cleaning experience more comfortable, effectively identify the health status of teeth and gums, and timely discover problems such as dental plaque, pigmentation, enamel damage, caries, etc., and prevent or treat them through specific cleaning modes, protect teeth and gums, and reduce the occurrence of oral diseases.

[0074] An embodiment of the present invention further provides a method for controlling an electric toothbrush, the method comprising:

[0075] The light source emits a light signal within a predetermined wavelength range for irradiating the interior of the oral cavity, and the spectrum sensor 8 receives the reflected and / or scattered spectrum signal after irradiating the teeth, and converts it into an electrical signal and sends it to the data processor 5;

[0076] The data processor 5 obtains the tooth state information corresponding to the received electrical signal according to the received electrical signal and the pre-stored correspondence between the electrical signal and the tooth state, obtains the corresponding operating parameters according to the obtained tooth state information and the pre-stored correspondence between the tooth state information and the operating parameters, and then transmits the obtained operating parameters to the controller 4;

[0077] The controller 4 controls the vibrator 7 according to the operating parameters, wherein the tooth state includes: tooth surface features and / or gum state, and the operating parameters include: vibration frequency and vibration amplitude of the toothbrush head 2 .

[0078] The operating parameters also include the wavelength emitted by the light source, and the controller 4 controls the wavelength range emitted by the light source;

[0079] The operating parameters also include: operating time, and the controller 4 can control the electric toothbrush to turn off and / or control the timing module to emit a prompt sound according to the operating time.

[0080] The method also includes: pre-marking a large amount of tooth spectral data and corresponding tooth surface features and gum position information, training with a graph neural network model, structurally matching the spectral data information with the tooth surface features and gum status information, and storing the matching results in the data processor 5 or a remote cloud server to provide corresponding oral hygiene and health care recommendations or warnings.

[0081] The control method further comprises the step of emitting light of a predetermined wavelength for targeted treatment:

[0082] For the part with dental plaque or caries, the swing amplitude of the toothbrush head 2 is increased and medium-high frequency is adopted, and ultraviolet light is used for irradiation to kill bacteria or prevent the development of caries;

[0083] For the part without dental plaque or caries, the swing amplitude of the toothbrush head 2 is reduced and the frequency is low, and infrared light is used for irradiation to promote blood circulation or strengthen tooth enamel;

[0084] For the gums, the swing amplitude and frequency of the toothbrush head 2 are automatically reduced using predetermined operating parameters, and infrared light is used for irradiation to protect the gums, reduce bleeding, and promote healing.

[0085] The above specific embodiments have been described in detail for the present invention, but it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An electric toothbrush comprising a handle (1) and a detachable toothbrush head (2), characterized in that: The handle (1) is provided with a battery (3), a controller (4), a data processor (5), and a vibrator (7); the toothbrush head (2) is provided with a spectrum sensor (8) and a light source (9); The controller (4) is used to control the on / off and operating parameters of the electric toothbrush, wherein the operating parameters include: the vibration frequency and vibration amplitude of the toothbrush head; The battery (3) is used to provide power for the controller (4), the data processor (5), the vibrator (7), the spectrum sensor (8) and the light source (9); The light source (9) emits a spectral signal within a predetermined wavelength range, and the spectral sensor (8) receives the spectral signal reflected and / or scattered after the light source (9) is irradiated onto the tooth, and converts the spectral signal into an electrical signal and sends it to the data processor (5); The data processor (5) obtains tooth state information corresponding to the received electric signal based on the received electric signal and the correspondence between the electric signal and the tooth state stored in advance, and obtains corresponding operating parameters based on the obtained tooth state information and the correspondence between the pre-stored tooth state information and the operating parameters, and then transmits the obtained operating parameters to the controller, and the controller controls the vibrator based on the operating parameters, wherein the tooth state includes: tooth surface characteristics and / or gum state.

2. The electric toothbrush according to claim 1, characterized in that The spectral sensor and the light source are arranged in the toothbrush head (2); the irradiation angle of the light source covers the tooth surface within the cleaning range; and / or the wavelength range of the spectral signal emitted by the light source (9) is 230-5000nm.

3. The electric toothbrush according to claim 1, characterized in that The toothbrush head is provided with a groove, the spectral sensor and the light source are arranged in the groove, the opening of the groove is located at the end of the toothbrush head provided with bristles, the receiving end of the spectral sensor and the transmitting end of the light source are facing the opening of the groove, and the electric toothbrush further comprises: a light-transmitting layer covering the opening of the groove, the light-transmitting layer being sealed and connected to the toothbrush head; and / or the handle (1) also has a control button connected to the controller signal.

4. The electric toothbrush according to claim 1, characterized in that The operating parameters also include: the wavelength emitted by the light source; The controller is also used to control the wavelength range emitted by the light source.

5. The electric toothbrush according to claim 1, characterized in that Also includes: A communication module (6) is signal-connected to the data processor, and the communication module (6) sends the tooth status information and / or operating parameters obtained by the data processor to the cloud or a terminal device.

6. The electric toothbrush according to claim 1, characterized in that The spectral sensor includes any one of a quantum dot spectral sensor, a micro-engraved grating spectral sensor, and a Fabry-Perot cavity interferometer filter sensor.

7. The electric toothbrush according to claim 1, characterized in that The spectral sensor (8) comprises: a quantum dot filter and a detector, wherein the quantum dot filter is located on the receiving side of the detector and is used for filtering light in different wavelength bands.

8. The electric toothbrush according to any one of claims 1 to 7, characterized in that: Also includes: The timing module is connected to the controller and the battery signal, and the operating parameters also include: operating time. The controller is also used to control the electric toothbrush to turn off and / or control the timing module to emit a prompt sound according to the operating time.

9. A control method for an electric toothbrush according to any one of claims 1 to 8, characterized in that: include: receiving a spectral signal reflected and / or scattered by the light source (9) after the light source (9) is directed toward the tooth, and converting the spectral signal into an electrical signal and sending it to a data processor (5); The data processor (5) obtains tooth state information corresponding to the received electric signal based on the received electric signal and the correspondence between the electric signal and the tooth state stored in advance, and obtains corresponding operating parameters based on the obtained tooth state information and the correspondence between the tooth state information stored in advance and the operating parameters, and then transmits the obtained operating parameters to the controller, and the controller controls the vibrator based on the operating parameters, wherein the tooth state includes: tooth surface characteristics and / or gum state, and the operating parameters include: vibration frequency and vibration amplitude of the toothbrush head.

10. The control method of the electric toothbrush according to claim 9, characterized in that: The operating parameters also include: the wavelength emitted by the light source; The controller is further used to control the wavelength range emitted by the light source; and / or, The operating parameters also include: operating time, and the controller is further used to control the electric toothbrush to turn off and / or control the timing module to emit a prompt sound according to the operating time.

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