Oral cavity cleaning equipment and method

Abstract

The embodiment of the invention provides oral cavity cleaning equipment and an oral cavity cleaning method. The oral cavity cleaning equipment comprises a photodiode and a micro-control unit, wherein the photodiode is at least used for receiving a reflected light signal, and the reflected light signal comprises a red fluorescence signal reflected by dental plaque; the micro-control unit is used for receiving a first electric signal sent by the photodiode; wherein the first electric signal comprises first information and second information, the first information comprises red fluorescence signal information, the second information comprises red light signal information in a photodiode receiving environment, and the first information and the second information are used for calculating dental plaque content information; on one hand, ambient light interference can be effectively avoided, and detection precision is improved; on the other hand, the dental plaque detection is more scientific and visual, and the cleaning efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of oral cleaning equipment technology, and in particular to an oral cleaning device and method. Background Technology

[0002] Oral hygiene devices are essential tools for maintaining oral hygiene. In recent years, with the widespread use and technological advancements of electric toothbrushes, their functions have gradually evolved from simple mechanical cleaning to intelligent and health monitoring capabilities. Among related technologies, some electric toothbrushes attempt to indirectly assess the effectiveness of tooth cleaning by detecting parameters such as brushing time, angle, and pressure. However, these parameters are difficult to accurately reflect whether the tooth surface is truly cleaned thoroughly.

[0003] In related technologies, some electric toothbrushes attempt to combine image recognition or screen feedback to alert users to missed cleaning areas. However, this method usually relies on external devices or screen viewing, which is inconvenient and lacks real-time performance. Furthermore, there is currently no effective means to directly detect the presence and distribution of dental plaque, thus hindering more precise cleaning guidance.

[0004] Therefore, how to achieve direct detection of dental plaque and provide real-time feedback without relying on external display devices has become a pressing technical problem for current oral hygiene equipment. Summary of the Invention

[0005] This application provides an oral cleaning device and method that enables more scientific and intuitive detection of dental plaque and improves cleaning efficiency.

[0006] The technical solution of this application embodiment is implemented as follows: In a first aspect, embodiments of this application provide an oral hygiene device, which includes a photodiode and a microcontroller unit; wherein... The photodiode is used to receive at least a reflected light signal; wherein the reflected light signal includes a red fluorescent signal reflected by dental plaque; The microcontroller unit is used to receive a first electrical signal sent by the photodiode; wherein the first electrical signal includes first information and second information, the first information includes the red fluorescence signal information, the second information includes the red light signal information received by the photodiode in the environment, and the first information and the second information are used to calculate the content information of the dental plaque.

[0007] Secondly, embodiments of this application provide an oral cleaning method, the method being applied to an oral cleaning device, the method comprising: The first location in the oral cavity to be cleaned is determined, and the first plaque content information corresponding to the first location is calculated by the microcontroller unit in the oral cleaning device. Based on the first content information, the first location is cleaned to obtain a first cleaning result, and it is determined whether the first cleaning result meets the first preset condition. If the first cleaning result meets the first preset condition, it is determined that the first position has been cleaned, and the oral cleaning device prompts the user that the current position has been cleaned or prompts the user to clean the second position; The prompts include one or more of the following: sound prompts, light prompts, image prompts, and vibration prompts; the second position includes other positions in the oral cavity besides the first position.

[0008] Thirdly, embodiments of this application provide an oral hygiene device, which includes: a processor and a memory; wherein, The memory is used to store computer programs that can run on the processor; The processor is configured to perform the oral cleaning method as described above when running the computer program.

[0009] This application provides an oral cleaning device and method. The oral cleaning device includes a photodiode and a microcontroller unit. The photodiode is used to receive reflected light signals, including red fluorescent signals reflected by dental plaque. The microcontroller unit receives a first electrical signal sent by the photodiode. The first electrical signal includes first information and second information. The first information includes red fluorescent signal information, and the second information includes red light signal information received by the photodiode from the environment. The first and second information are used to calculate the content of dental plaque. The method includes: determining a first location in the oral cavity to be cleaned, and calculating the first content of dental plaque corresponding to the first location using the microcontroller unit in the oral cleaning device; cleaning the first location based on the first content information to obtain a first cleaning result, and determining whether the first cleaning result meets a first preset condition; if the first cleaning result meets the first preset condition, determining that the first location has been cleaned, and the oral cleaning device prompts the user that the current location has been cleaned or prompts the user to clean a second location. The prompts include one or more of sound prompts, light prompts, image prompts, and vibration prompts, and the second position includes other positions in the oral cavity besides the first position. Therefore, this embodiment can receive the red fluorescence signal generated by dental plaque under ultraviolet light irradiation via a photodiode, and send this red fluorescence signal information (i.e., the first information) to the microcontroller unit. The microcontroller unit can then separate this signal information from the red light signal information in the environment (i.e., the second information) to obtain an accurate dental plaque reflection signal. Secondly, the microcontroller unit processes the separated signal to extract the dental plaque content information. This effectively avoids ambient light interference and improves detection accuracy. Furthermore, calculating the dental plaque content through electrical signal difference makes dental plaque detection more scientific and intuitive, solving the problem of existing electric toothbrushes relying on parameters such as angle and time to indirectly judge cleaning effectiveness. Moreover, this embodiment can dynamically adjust the cleaning time and area based on the dental plaque content information, prioritizing high-content areas and avoiding ineffective repeated cleaning. Finally, it automatically switches cleaning areas after reaching a preset cleaning standard, realizing an intelligent brushing process. This not only improves cleaning efficiency but also reduces the risk of tooth wear and enhances the user's brushing experience. Compared to traditional fixed-duration or manual judgment methods, it is more targeted and scientific. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the composition and structure of the oral cleaning device proposed in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the composition and structure of the oral cleaning device proposed in the embodiments of this application. Figure 2 ; Figure 3 This is a schematic diagram of the composition and structure of the dental plaque detection module proposed in the embodiments of this application; Figure 4 This is a schematic diagram of the oral cleaning method proposed in the embodiments of this application; Figure 5 This is a schematic diagram illustrating the principle of dental plaque detection proposed in the embodiments of this application; Figure 6 This is a schematic diagram of the LED driving waveform proposed in an embodiment of this application; Figure 7 This is a schematic diagram of the output waveform of the photodiode proposed in an embodiment of this application; Figure 8 This is a schematic diagram of the optical path design structure proposed in the embodiments of this application; Figure 9 This is a schematic diagram of the composition and structure of the oral cleaning device proposed in the embodiments of this application. Figure 3 . Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the relevant application and not for limiting the application. Furthermore, it should be noted that, for ease of description, only the parts related to the relevant application are shown in the accompanying drawings.

[0012] Before providing a further detailed description of the embodiments of this application, the nouns and terms used in the embodiments of this application are explained, and the nouns and terms used in the embodiments of this application shall be interpreted as follows: 1) Dental plaque: refers to the microbial community that adheres to the surface of teeth, containing a large number of porphyrins, which emit red fluorescent signals when exposed to specific wavelengths (such as blue-violet light). Dental plaque is one of the main causes of tooth decay and gingivitis.

[0013] 2) Ultraviolet / blue-violet light: refers to visible light with wavelengths between approximately 400nm and 450nm. Light in this band can excite porphyrin substances in dental plaque to produce red fluorescence (630-680nm), thereby enabling the detection of dental plaque content.

[0014] 3) Photodiode: A photoelectric sensor that converts received light signals into electrical signals for output. In this embodiment, the photodiode is used to receive the red fluorescent signal reflected from dental plaque and convert it into an electrical signal containing plaque information for processing and analysis by the microcontroller unit.

[0015] 4) Microcontroller Unit (MCU): This is the core controller in an embedded system, possessing functions such as data acquisition, logic judgment, and control execution. In this embodiment, the MCU is used to receive and process the electrical signals sent by the photodiode, calculate the plaque content, and control the cleaning action of the electric toothbrush accordingly.

[0016] In current electric toothbrushes, the cleaning effect is largely dependent on the user's subjective operation, or can only be indirectly estimated through parameters such as brushing time, brush head angle, and brushing force. They cannot directly reflect the removal of plaque from the tooth surface. Therefore, this can easily lead to some areas being uncleaned while others are repeatedly brushed, resulting in problems such as enamel wear.

[0017] To address the aforementioned problems, this application provides an oral cleaning device and method. The oral cleaning device includes a photodiode and a microcontroller unit. The photodiode is used to receive reflected light signals, including red fluorescent signals reflected by dental plaque. The microcontroller unit receives a first electrical signal sent by the photodiode. The first electrical signal includes first information and second information; the first information includes red fluorescent signal information, and the second information includes red light signal information received by the photodiode from the environment. The first and second information are used to calculate the plaque content. The method includes: determining a first location in the oral cavity to be cleaned, and calculating the first plaque content information corresponding to the first location using the microcontroller unit in the oral cleaning device; cleaning the first location based on the first content information to obtain a first cleaning result, and determining whether the first cleaning result meets a first preset condition; if the first cleaning result meets the first preset condition, determining that the first location has been cleaned, and the oral cleaning device prompts the user that the current location has been cleaned or prompts the user to clean a second location. The prompt includes one or more of sound prompts, light prompts, image prompts, and vibration prompts, and the second location includes other locations in the oral cavity besides the first location. Therefore, this embodiment of the application can receive the red fluorescence signal generated by dental plaque under ultraviolet light irradiation through a photodiode, and send the red fluorescence signal information (i.e., the first information) to the microcontroller unit. The microcontroller unit can then separate this signal information from the red light signal information in the environment (i.e., the second information) to obtain an accurate dental plaque reflection signal. Secondly, the microcontroller unit processes the separated signal to extract the dental plaque content information. This effectively avoids ambient light interference and improves detection accuracy. Furthermore, calculating the dental plaque content through electrical signal difference makes plaque detection more scientific and intuitive, solving the problem of existing electric toothbrushes relying on parameters such as angle and time to indirectly judge cleaning effectiveness. Moreover, this embodiment of the application can dynamically adjust the cleaning time and area based on the dental plaque content information, prioritizing high-content areas and avoiding ineffective repeated cleaning. Additionally, it automatically switches cleaning areas after reaching a preset cleaning standard, realizing an intelligent brushing process. This not only improves cleaning efficiency but also reduces the risk of tooth wear and enhances the user's brushing experience, making it more targeted and scientific compared to traditional fixed-time or manual judgment methods.

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] This application provides an oral hygiene device. Figure 1 This is a schematic diagram of the composition and structure of the oral cleaning device proposed in the embodiments of this application. Figure 1 ,like Figure 1As shown, the oral hygiene device may include a photodiode and a microcontroller unit.

[0020] It should be noted that, in the embodiments of this application, oral cleaning devices may include electric toothbrush devices, and this application does not specifically limit the types of devices included in oral cleaning devices.

[0021] It should be noted that, in the embodiments of this application, the oral cleaning device may include not only photodiodes and microcontrollers, but also light-shielding walls and optical paths. This application does not specifically limit the types and number of modules included in the oral cleaning device.

[0022] For example, in the embodiments of this application, Figure 2 This is a schematic diagram of the composition and structure of the oral cleaning device proposed in the embodiments of this application. Figure 2 ,like Figure 2 As shown, the oral hygiene device may include a main control unit (i.e., MCU), a plaque detection module, a 6-axis sensor, a DC motor, and a real-time clock (RTC). The plaque detection module is used to detect the amount of plaque in the teeth in real time; the 6-axis sensor is used to detect the movement and position of the toothbrush in real time; the RTC is used for protection against excessive brushing time and minimum brushing time; and the DC motor is used for sweeping and removing plaque. This application does not specifically limit the type or number of modules included in the oral hygiene device.

[0023] It should be noted that, in the embodiments of this application, the oral cleaning device may further include a brush head and a handle, with the brush head oscillating about the axis of the handle to clean the oral cavity.

[0024] It should be noted that, in the embodiments of this application, the microcontroller unit is the core controller of the embodiments of this application. The microcontroller unit is responsible for receiving the first electrical signal output by the photodiode and processing and analyzing the first electrical signal. The first electrical signal includes first information and second information. The first information includes red fluorescence signal information, and the second information includes red light signal information received by the photodiode in the environment. The first information and the second information are used to calculate the content information of dental plaque.

[0025] For example, in an embodiment of this application, the microcontroller unit can employ a differential algorithm, that is, determine the specific amount of dental plaque by calculating the difference between first information and second information. This differential algorithm can effectively eliminate the influence of ambient light, improving the accuracy and reliability of detection.

[0026] In practice, the microcontroller also features logical judgment capabilities, dynamically adjusting the electric toothbrush's cleaning actions based on detection results. For example, if a high plaque content is detected in a certain area, the microcontroller will extend the cleaning time for that area; conversely, if a low plaque content is detected, it will reduce the cleaning time to avoid over-brushing. This intelligent adjustment mechanism not only improves brushing efficiency but also protects the user's dental health.

[0027] For example, in the embodiments of this application, Figure 3 This is a schematic diagram of the composition and structure of the dental plaque detection module proposed in the embodiments of this application, as shown below. Figure 3 As shown, the dental plaque detection module can consist of a light source, a photodiode, a light-shielding barrier, a filter, and an optical path. The light source emits blue-violet light; the photodiode receives the red fluorescence reflected from the dental plaque; the filter filters out other wavelengths of light, allowing only red fluorescence to pass through; the light-shielding barrier prevents the light source from directly illuminating the photodiode; and the optical path is used for light transmission. The optical path can be made by embedding an optical fiber inside the toothbrush head, or by using a laser to etch the optical path inside transparent plastic.

[0028] It should be noted that, in the embodiments of this application, the photodiode serves as a key optical sensor, its function being to receive the light signal reflected from the surface of dental plaque. The reflected light signal consists of red fluorescence (630-680nm) emitted by porphyrin substances in the dental plaque after being irradiated with blue-violet light (approximately 400nm-450nm). Simultaneously, since other red light components may exist in the environment, such as fluorescent lamps and LED lighting, these non-target light sources emitted by the photodiode will be detected. Therefore, the photodiode can detect two parts of the signal: one part is the red fluorescence signal from the dental plaque, and the other part is the red background signal from the environment.

[0029] It should be noted that, in the embodiments of this application, in order to ensure the accuracy of the detection results, a modulation technique can be used to perform pulse width modulation (PWM) on the blue-violet light emitted by the LED light source, so as to distinguish the red fluorescence signal generated by dental plaque from the red light component in the environment. By using a modulation technique to perform pulse width modulation (PWM) on the blue-violet light emitted by the LED light source, the true fluorescence signal of dental plaque can be separated in subsequent signal processing.

[0030] It should be noted that, in the embodiments of this application, by using a filter to allow only red-band light to pass through, interference light of other wavelengths can be effectively filtered out, thereby improving detection accuracy.

[0031] It should be noted that, in the embodiments of this application, the light-shielding barrier is a physical barrier placed between the light source and the photodiode. The main function of the light-shielding barrier is to prevent the light source (such as a blue-violet LED) from directly shining on the photodiode, thereby avoiding signal distortion or misjudgment due to strong light interference. In the embodiments of this application, since dental plaque detection depends on the intensity change of the red fluorescence signal, if the photodiode is affected by the direct light from the LED light source, it may not be able to accurately identify the red fluorescence signal from the dental plaque, leading to incorrect judgment. Therefore, through reasonable structural design, such as using opaque materials to construct the shielding channel or using a reflector to guide the light to the target area, the light-shielding barrier can effectively isolate the interfering light in the environment and ensure that only the red fluorescence signal generated by the dental plaque is received.

[0032] It should be noted that, in the embodiments of this application, the optical path refers to the path or structure used to guide and transmit optical signals. In the embodiments of this application, the optical path plays a crucial role in connecting the red fluorescence emitted by dental plaque with the photodiode. Various methods can be used to design the optical path, such as embedding an optical fiber inside the brush head for optical signal transmission, or using laser etching technology to form a light-guiding path in transparent plastic. This application does not specifically limit the design of the optical path.

[0033] It should be noted that, in the embodiments of this application, by setting up a light-shielding barrier and an optical path structure, interference light can be shielded and the signal transmission path can be optimized, thereby improving the stability and sensitivity of dental plaque detection and further realizing a more intelligent and precise brushing control function.

[0034] In other words, in the embodiments of this application, the oral cleaning device can emit blue-violet light of a specific wavelength from an LED light source, irradiating the tooth surface and exciting porphyrin molecules in dental plaque to generate a red fluorescent signal. Then, a photodiode receives the reflected light signal. Next, the microcontroller receives a first electrical signal from the photodiode, which includes first information and second information. The first information includes red fluorescent signal information, and the second information includes red light signal information received by the photodiode from the environment. The first and second information are separated using a differential algorithm, and the plaque content information is finally calculated. Based on the analysis of the plaque content information, the cleaning mode of the electric toothbrush is adjusted. The collaborative work between the LED light source, the photodiode, and the microcontroller enables accurate detection and personalized cleaning of dental plaque.

[0035] This application provides an oral cleaning device, which includes a photodiode and a microcontroller unit. The photodiode is used to receive reflected light signals, including red fluorescent signals reflected by dental plaque. The microcontroller unit receives a first electrical signal sent by the photodiode. The first electrical signal includes first information and second information. The first information includes red fluorescent signal information, and the second information includes red light signal information received by the photodiode from the environment. The first and second information are used to calculate the plaque content. Therefore, this application embodiment can receive the red fluorescent signal generated by dental plaque under ultraviolet light irradiation via a photodiode, and send the electrical signal corresponding to the red fluorescent signal (i.e., the first information) and the electrical signal corresponding to the red light signal in the environment (i.e., the second information) to the microcontroller unit. This allows the microcontroller unit to separate the first and second information to obtain an accurate plaque reflection signal. Furthermore, the microcontroller unit processes the separated signal to extract the plaque content information. This effectively avoids ambient light interference and improves detection accuracy. On the other hand, calculating the plaque content through the difference in electrical signals makes plaque detection more scientific and intuitive, solving the problem of existing electric toothbrushes relying on parameters such as angle and time to indirectly judge cleaning effectiveness.

[0036] Based on the above embodiments, another embodiment of this application provides an oral cleaning method, which is applied to an oral cleaning device. Figure 4 This is a schematic diagram of the oral cleaning method proposed in the embodiments of this application, such as... Figure 4 As shown, oral hygiene methods may include the following steps: Step 101: Determine the first location in the oral cavity to be cleaned, and calculate the first amount of dental plaque corresponding to the first location through the microcontroller unit in the oral cleaning device.

[0037] In the embodiments of this application, the oral cleaning device can determine the first position to be cleaned in the oral cavity and calculate the first content information of dental plaque corresponding to the first position through the microcontroller unit in the oral cleaning device.

[0038] It should be noted that, in the embodiments of this application, the first position may include the current position of the electric toothbrush in the oral cavity, and this application does not specifically limit the type of the first position.

[0039] Optionally, in an embodiment of this application, when calculating the first content information of dental plaque corresponding to the first position through the microcontroller unit in the oral cleaning device, a specific wavelength of blue-violet light can be emitted by the LED light source in the oral cleaning device and irradiated onto the tooth surface at the first position to excite the porphyrin molecules in the dental plaque to generate a red fluorescent signal; then, the photodiode can receive the reflected light signal and convert the reflected light signal into an electrical signal; then, the microcontroller unit receives the electrical signal from the photodiode and calculates the first content information of dental plaque through a differential algorithm.

[0040] Step 102: Clean the first position based on the first content information to obtain the first cleaning result, and determine whether the first cleaning result meets the first preset condition.

[0041] In the embodiments of this application, after determining the first position to be cleaned in the oral cavity and calculating the first content information of dental plaque corresponding to the first position through the microcontroller unit in the oral cleaning device, the first position can be cleaned based on the first content information to obtain a first cleaning result, and determine whether the first cleaning result meets the first preset condition.

[0042] It should be noted that, in the embodiments of this application, the oral cleaning device may include a brush head and a handle, with the brush head oscillating about the axis of the handle to clean the oral cavity.

[0043] Optionally, in an embodiment of this application, when the oral cleaning device cleans the first position based on the first content information, it can determine whether the first content information exceeds a preset value of dental plaque content. If it exceeds the preset value of dental plaque content, the brush head in the oral cleaning device swings at a first angle to clean the first position.

[0044] For example, in an embodiment of this application, when the brush head in the oral cleaning device swings at a first angle to clean the first position, it can clean the teeth by sweeping and vibrating, and repeatedly clean the teeth in the first position. For example, the sweeping and vibrating brushing method can simulate the Bass brushing method, thereby improving cleaning efficiency while protecting the teeth.

[0045] It should be noted that, in the embodiments of this application, the first angle can be the initial angle of the brush head cleaning the first position in the oral cleaning device, such as 10°, or it can be set to other angles. This application does not specifically limit the size of the first angle.

[0046] It should be noted that, in the embodiments of this application, the first cleaning result may include the second content information of dental plaque corresponding to the first position, or it may include other information. This application does not specifically limit the type and quantity of information included in the first cleaning result.

[0047] It should be noted that, in the embodiments of this application, the second content information includes the content of dental plaque after the brush head of the oral cleaning device cleans the first position, and this application does not specifically limit the size of the second content information.

[0048] Optionally, in the embodiments of this application, when determining whether the first cleaning result meets the first preset condition, the first cleaning result can be determined to meet the first preset condition if the second content information is less than the preset value of dental plaque content and the brush head swings to a preset angle; wherein, the first angle is less than the preset angle.

[0049] It should be noted that in the embodiments of this application, the preset angle may refer to the maximum angle at which the brush head in the oral cleaning device swings, such as 60°, or other angles. This application does not specifically limit the size of the preset angle.

[0050] For example, in an embodiment of this application, the brush head in the oral cleaning device swings at a first angle to clean a first position. If the second content information of dental plaque corresponding to the first position is less than the preset value of dental plaque content, it indicates that the area covered by the first position at the first angle is clean. Then the swing angle of the brush head can be expanded to clean sequentially until the brush head swings to 60° (i.e., the maximum angle). Then it is determined that the first cleaning result meets the first preset condition.

[0051] It should be noted that, in the embodiments of this application, the first cleaning result also includes the first brushing time at the first position, which can be recorded by the built-in RTC (real-time clock) module.

[0052] Optionally, in an embodiment of this application, when the second content information is less than a preset value for plaque content or the first brushing duration is greater than a preset value for brushing duration, the brush head swings at a second angle to clean the first position; wherein, the first angle is less than the second angle, and the second angle is less than a preset angle.

[0053] It should be noted that, in the embodiments of this application, the preset brushing time can be the maximum brushing time that can be set, and this application does not specifically limit the size of the preset brushing time.

[0054] It should be noted that in the embodiments of this application, the second angle can be an enlarged version of the first angle, such as 20°, or other angles. This application does not specifically limit the size of the second angle.

[0055] For example, in an embodiment of this application, the brush head in the oral cleaning device swings at a first angle to clean a first position. When the second plaque content information corresponding to the first position is less than a preset plaque content value or the first brushing time is greater than a preset brushing time value, the swing angle of the brush head can be increased. For example, the brush head swings at a 20° angle (i.e., the second angle) to clean the first position. If the plaque content after cleaning at the second angle is less than the preset plaque content value or the brushing time after cleaning at the second angle is greater than the preset brushing time value, it indicates that the area covered by the second angle at the first position is clean. The swing angle of the brush head can be further increased, for example, by swinging at a 30° angle to clean the first position, and so on, until the swing angle of the brush head reaches the maximum swing angle (i.e., the preset angle), and then the angle is no longer increased.

[0056] In other words, in the embodiments of this application, when the oral cleaning device cleans the first position, it can continuously increase the sweeping angle and perform sweeping and vibration cleaning on the first position at different angles. This increases the brushing area of ​​the toothbrush in a single position, eliminating the need for the user to frequently move and change positions. Compared with traditional sonic toothbrushes, the oral cleaning device proposed in the embodiments of this application can repeatedly clean the first position by expanding the sweeping angle of the toothbrush, achieving deep cleaning and improving cleaning efficiency.

[0057] Step 103: If the first cleaning result meets the first preset condition, it is determined that the first position has been cleaned. The oral cleaning device prompts the user that the current position has been cleaned or prompts the user to clean the second position. The prompt includes one or more of the following: sound prompt, light prompt, image prompt, vibration prompt. The second position includes other positions in the oral cavity besides the first position.

[0058] In the embodiments of this application, after the oral cleaning device cleans the first position based on the first content information to obtain a first cleaning result and determines whether the first cleaning result meets the first preset condition, it can determine that the first position has been cleaned if the first cleaning result meets the first preset condition, and the oral cleaning device prompts the user that the current position has been cleaned or prompts the user to clean the second position.

[0059] It should be noted that, in the embodiments of this application, the second position may include other positions in the oral cavity besides the first position. The second positions in the oral cavity to be cleaned are cleaned sequentially until the cleaning is completed, thus completing the cleaning of all positions in the oral cavity. This application does not specifically limit the type of the second position.

[0060] For example, in an embodiment of this application, assuming that the second position includes a position adjacent to the first position, the oral cleaning device can prompt the user to clean the second position. The cleaning method is the same as the method for cleaning the first position. The adjacent position can be cleaned by continuously increasing the sweeping angle. When the cleaning result of the adjacent position meets the first preset condition, it is determined that the adjacent position to the first position has been cleaned. According to this method, each other position included in the second position can be cleaned in sequence until the cleaning of all positions in the oral cavity is completed.

[0061] It should be noted that, in the embodiments of this application, the prompts may include one or more of the following: sound prompts, light prompts, image prompts, and vibration prompts. This application does not specifically limit the type of prompt.

[0062] It should be noted that, in the embodiments of this application, the oral cleaning device includes a motor, and the prompt can be a vibration prompt generated by the motor. That is, the motor can generate different vibrations, and the motor power can be increased or decreased, so that the prompt can be made by the difference in effect with the previous vibration. The embodiments of this application use motor vibration prompts without the need to add additional components, thereby greatly reducing costs.

[0063] Optionally, in embodiments of this application, the oral cleaning device can acquire first data and second data corresponding to each location in the oral cavity; wherein, the first data includes plaque content information and location information before cleaning, and the second data includes plaque content information and location information after cleaning; wherein, the plaque content information before cleaning includes first content information, and the plaque content information after cleaning includes second content information; then, a first distribution information can be generated based on each plaque content information and location information before cleaning; wherein, the first distribution information is used to characterize the plaque distribution before cleaning; and a second distribution information can also be generated based on each plaque content information and location information after cleaning; wherein, the second distribution information is used to characterize the plaque distribution after cleaning; furthermore, a first reminder information can be generated based on the second distribution information and a preset tolerance threshold; wherein, the first reminder information includes one or more of cleaning intensity information and cleaning frequency information.

[0064] For example, in the embodiments of this application, the first distribution information can be an image or data model formed by spatially mapping the plaque content data before cleaning according to the location information. This image or model visually reflects the plaque distribution status in different areas of the user's oral cavity. The first distribution information can be presented in the form of a heat map, with the color intensity indicating the plaque content. This heat map helps users understand their oral hygiene status. In other words, by establishing a plaque distribution map before cleaning, the embodiments of this application can identify high-risk areas, providing basic data support for optimizing subsequent cleaning strategies.

[0065] It should be noted that in the embodiments of this application, the second distribution information is similar to the first distribution information, but reflects the plaque residue after cleaning. The second distribution information also uses location information to locate and visualize the plaque content after cleaning, for evaluating the cleaning effect. If the plaque content in certain areas is still high, it indicates that specific areas in these areas may not have been sufficiently cleaned, and the user should strengthen brushing of these specific areas. By comparing the distribution maps before and after cleaning, it can be determined whether the user has completed an effective cleaning operation, and further suggestions can be given based on the above judgment results.

[0066] It should be noted that, in the embodiments of this application, the preset tolerance threshold refers to an acceptable range of plaque residue. When the plaque residue exceeds the tolerance threshold, it is judged as insufficient cleaning. The preset tolerance threshold can be personalized according to the user's oral health status, brushing habits, etc. This application does not specifically limit the size of the preset tolerance threshold.

[0067] It should be noted that, in the embodiments of this application, the first reminder information is feedback information automatically generated based on the comparison results of plaque distribution before and after cleaning, prompting the user whether they need to increase brushing pressure or frequency. For example, if the cleaning effect of a certain area is below a threshold, it will suggest that the user stay in that area for a longer period of time or adjust the brushing angle.

[0068] For example, in the embodiments of this application, when the oral cleaning device generates the first reminder information based on the second distribution information and the preset tolerance threshold, it can determine whether there are multiple locations corresponding to the plaque content information after cleaning that simultaneously satisfy the following formula (1). If satisfied, the first reminder information is generated. For example, the first reminder information can remind the user to increase the frequency and intensity of brushing.

[0069] (1) in, This indicates the amount of plaque after cleaning. This indicates the preset value for plaque content. This indicates the preset tolerance threshold.

[0070] It should be noted that, in the embodiments of this application, by obtaining data on the content and location of dental plaque before and after cleaning, and generating distribution information for comparative analysis to generate targeted cleaning suggestions, this method can effectively identify cleaning blind spots, thereby improving the coverage and uniformity of brushing, and further significantly improving oral hygiene.

[0071] It should be noted that in the embodiments of the present application, the second data further includes the second brushing duration corresponding to each position, and the second brushing duration includes the first brushing duration. The present application does not specifically limit the data types included in the second data.

[0072] It should be noted that in the embodiments of the present application, the second brushing duration refers to the actual cleaning duration recorded for a specific area of the oral cavity during the brushing process. For example, the second brushing duration may include the actual cleaning time corresponding to each position.

[0073] Optionally, in the embodiments of the present application, the oral cleaning device may further generate third distribution information based on each second brushing duration and position information; wherein, the third distribution information is used to characterize the cleaning duration of different positions; then, second reminder information may be generated based on the third distribution information, the third preset threshold, and the fourth preset threshold; wherein, the second reminder information includes one or more of cleaning intensity information and cleaning frequency information; or, an oral cleaning score may be generated based on the first distribution information and the second distribution information, and an oral cleaning report may be generated based on one or more of the oral cleaning score, the first reminder information, the second reminder information, the first distribution information, the second distribution information, and the third distribution information.

[0074] Exemplarily, in the embodiments of the present application, the fourth preset threshold may represent an ideal brushing time. For example, the set brushing time is at least 30 seconds, and the ideal brushing time may be set to 45 seconds, or may be set to other values. The present application does not specifically limit the magnitude of the fourth preset threshold.

[0075] Exemplarily, in the embodiments of the present application, when the oral cleaning device generates the second reminder information based on the third distribution information, the third preset threshold, and the fourth preset threshold, it may determine whether there are second brushing durations corresponding to multiple positions < T_set (i.e., the fourth preset threshold) and no > T_max (i.e., the third preset threshold) appears. If the second brushing durations corresponding to multiple positions < T_set and no > T_max appears, the second reminder information may be generated, and the second reminder information may be used to remind the user to appropriately reduce the brushing frequency and intensity.

[0076] It should be noted that in the embodiments of the present application, by introducing new parameters such as the second brushing duration, the third distribution information, and the second reminder information, the brushing behavior of the user can be analyzed more precisely, the intelligent level of plaque removal can be improved, thereby optimizing the brushing efficiency of the user, and further promoting oral health and reducing the incidence of periodontal diseases.

[0077] It should be noted that, in the embodiments of this application, the oral hygiene score can be a comprehensive index calculated based on multiple distribution information (including first distribution information and second distribution information, where the first distribution information represents the distribution of dental plaque before brushing and the second distribution information represents the distribution of remaining dental plaque after brushing), used to quantify the overall effect of this brushing. The higher this oral hygiene score, the more effectively the user has removed dental plaque.

[0078] It should be noted that, in the embodiments of this application, the oral hygiene report integrates all the above data into a structured document, including scoring results, specific reminder information, and analysis of the cleaning status of each area, making it convenient for users to review and improve their brushing techniques. For example, the oral hygiene report can list which areas are insufficiently cleaned, which areas are at risk of over-cleaning, and provide corresponding improvement suggestions.

[0079] This application provides an oral cleaning method applied to an oral cleaning device. The method includes: determining a first location in the oral cavity to be cleaned, and calculating first plaque content information corresponding to the first location using a microcontroller unit in the oral cleaning device; cleaning the first location based on the first content information to obtain a first cleaning result, and determining whether the first cleaning result meets a first preset condition; if the first cleaning result meets the first preset condition, determining that the first location has been cleaned, and the oral cleaning device prompts the user that the current location has been cleaned or prompts the user to clean a second location; wherein the prompt includes one or more of sound prompts, light prompts, image prompts, and vibration prompts, and the second location includes other locations in the oral cavity besides the first location. Therefore, this application can dynamically adjust the cleaning time and area according to plaque content information, avoiding ineffective repeated cleaning; secondly, it automatically switches the cleaning area after reaching a preset cleaning standard, realizing an intelligent brushing process. This not only improves cleaning efficiency but also reduces the risk of tooth wear and improves the user's brushing experience, making it more targeted and scientific compared to traditional fixed-time or manual judgment methods.

[0080] Based on the above embodiments, another embodiment of this application provides an oral cleaning method. This method is applied to an oral cleaning device, which uses ultraviolet light and photodiodes to detect the amount of dental plaque in the oral cavity, and adjusts the brushing time and area of ​​the motor accordingly. This achieves intelligent removal of dental plaque in the oral cavity, realizing the purpose of intelligent and healthy brushing. Specifically, this embodiment utilizes the fluorescence reaction of dental plaque with ultraviolet light to detect the state of dental plaque in the oral cavity in real time during brushing, thereby automatically adjusting the brushing time to remove dental plaque from the tooth surface. It adopts a more scientific optical real-time detection method to determine whether the teeth have been cleaned. This avoids repeatedly cleaning already cleaned toothbrushes, which can cause tooth wear. It can focus on areas with high dental plaque content, reduce ineffective brushing, shorten brushing time, and improve brushing efficiency.

[0081] It should be noted that, in the embodiments of this application, Figure 5 This is a schematic diagram illustrating the principle of dental plaque detection proposed in the embodiments of this application, as follows: Figure 5 As shown, the MCU in the oral cleaning device controls the LED driver circuit to control the LED light source to emit blue (violet) light. When the porphyrins in the dental plaque are irradiated by the blue (violet) light, they emit red fluorescence (630-680nm). A filter is used to filter out other wavelengths of light, allowing only red light (630-680nm) to pass through. The photodiode receives the red fluorescence generated by the dental plaque, converts the light signal into an electrical signal, and then the amplification circuit outputs the electrical signal (i.e., the first electrical signal) to the MCU's analog-to-digital converter (ADC). The MCU calculates the amount of dental plaque on the tooth surface based on the amplitude of the received electrical signal.

[0082] Optionally, in embodiments of this application, in order to avoid the influence of red light components in the environment on the test results, it is necessary to modulate the light emitted by the LED light source. Figure 6 This is a schematic diagram of the LED driving waveform proposed in the embodiments of this application, such as... Figure 6 As shown, the optical signal is modulated using pulse width modulation (PWM). Figure 7 This is a schematic diagram of the photodiode output waveform proposed in an embodiment of this application, as shown below. Figure 7 The figure shows the waveform of the photodiode output. V1 is the red light component in the environment, V2 is the red fluorescence signal reflected by dental plaque, and V2-V1 is the content of dental plaque. The higher the content of dental plaque, the greater the difference between V2 and V1.

[0083] Optionally, in embodiments of this application, Figure 8 This is a schematic diagram of the optical path design structure proposed in the embodiments of this application, such as... Figure 8As shown, the system's optical path design consists of a light source, a photodiode, a light-shielding barrier, a filter, and an optical path. The light source emits blue-violet light; the photodiode receives the red fluorescence reflected from dental plaque; the filter filters out other wavelengths of light, allowing only red fluorescence to pass through; the light-shielding barrier prevents the light source from directly shining on the photodiode; and the optical path is used for light transmission.

[0084] Optionally, in an embodiment of the present application, the oral cleaning method may include the following steps: Step 1, start brushing teeth; Step 2, start real-time detection of dental plaque and record the current dental plaque content D_s (i.e., the first content information) and the position P of the toothbrush in the oral cavity (i.e., the first position), and the DC motor starts sweeping and vibrating to brush teeth; Step 3, when it is detected that the dental plaque content at this position decreases to D_min (i.e., the preset value of dental plaque content) and is greater than the brushing time T_min, or greater than the maximum brushing time Tmax (i.e., the third preset threshold), record the dental plaque content D_n (i.e., the second content information) and the brushing time T_c at this position (i.e., the first brushing duration); the dental plaque removed by this toothbrush is D_c = D_s - D_n; Step 4, the toothbrush starts to increase the sweeping and vibrating angle, and detect whether there is dental plaque in the upper and lower positions of the current toothbrush position (i.e., the first position); if there is dental plaque, the toothbrush rotates to the position with the dental plaque angle and starts to continue sweeping and vibrating to brush teeth, and repeat Steps 2-3; if there is no dental plaque, end brushing in this area (which can help the user move less and brush more areas); Step 5, the DC motor vibrates to remind the user to move the brush head to change the brushing area, continue to brush the next position (i.e., the second position) and record relevant data; repeat Steps 2-4 until brushing is completed for all areas; Step 6, according to the D_S (i.e., the dental plaque content information before each cleaning) and P data (i.e., the position information) in Steps 2-5, a distribution of dental plaque on teeth before brushing (i.e., the first distribution information) can be generated; Step 7, according to the D_n (i.e., the dental plaque content information after each cleaning) and P data (i.e., the position information) in Steps 2-5, a distribution of dental plaque on teeth after brushing (i.e., the second distribution information) can be generated; if D_n > Dmin + D_set (i.e., the preset tolerance threshold) appears in multiple areas of the teeth, it is necessary to remind the user to increase the brushing frequency and intensity; Step 8, according to the T_c (i.e., each second brushing duration) and P data in Steps 2-5, a brushing time for different parts of the teeth (i.e., the third distribution information) can be generated; if T_c < T_set (i.e., the fourth preset threshold) appears in multiple areas of the teeth and T_c > T_max (i.e., the third preset threshold) does not appear, the user can appropriately reduce the brushing frequency and intensity; Step 9, according to the D_c and P data in Steps 2-5, a dental plaque removal situation for this brushing can be generated; according to D_C, D_S and P, a brushing effect score (i.e., the oral cleaning score) can be output for this brushing; Step 10, according to the data in Steps 6-9, an oral cleaning report (i.e., the oral cleaning report) can be output to the user and brushing suggestions can be provided. Thereby, it is possible to prevent the user from over-brushing a certain area, causing problems such as toothbrush wear and incomplete brushing in some areas; it is possible to prevent the user from repeatedly brushing a fixed area, reducing the user's brushing time and improving the user's brushing efficiency.

[0085] For example, in an embodiment of this application, the brush head in the oral cleaning device swings at a first angle to clean a first position. When the second plaque content information corresponding to the first position is less than a preset plaque content value or the first brushing time is greater than a preset brushing time value, the swing angle of the brush head can be increased. For example, the brush head swings at a 20° angle (i.e., the second angle) to clean the first position. If the plaque content after cleaning at the second angle is less than the preset plaque content value or the brushing time after cleaning at the second angle is greater than the preset brushing time value, it indicates that the area covered by the second angle at the first position is clean. The swing angle of the brush head can be further increased, for example, by swinging at a 30° angle to clean the first position, and so on, until the swing angle of the brush head reaches the maximum swing angle (i.e., the preset angle), and then the angle is no longer increased.

[0086] In other words, in the embodiments of this application, when the oral cleaning device cleans the first position, it can continuously increase the sweeping angle and perform sweeping and vibration cleaning on the first position at different angles. This increases the brushing area of ​​the toothbrush in a single position, eliminating the need for the user to frequently move and change positions. Compared with traditional sonic toothbrushes, the oral cleaning device proposed in the embodiments of this application can repeatedly clean the first position by expanding the sweeping angle of the toothbrush, achieving deep cleaning and improving cleaning efficiency.

[0087] It should be noted that, in the embodiments of this application, the oral cleaning method described above can prevent users from over-brushing one area of ​​their teeth, which could lead to toothbrush wear and incomplete brushing of certain areas; at the same time, it can prevent users from repeatedly brushing the same area, reducing brushing time and improving brushing efficiency.

[0088] This application provides an oral cleaning method applied to an oral cleaning device. The method includes: determining a first location in the oral cavity to be cleaned, and calculating first plaque content information corresponding to the first location using a microcontroller unit in the oral cleaning device; cleaning the first location based on the first content information to obtain a first cleaning result, and determining whether the first cleaning result meets a first preset condition; if the first cleaning result meets the first preset condition, determining that the first location has been cleaned, and the oral cleaning device prompts the user that the current location has been cleaned or prompts the user to clean a second location; wherein the prompt includes one or more of sound prompts, light prompts, image prompts, and vibration prompts, and the second location includes other locations in the oral cavity besides the first location. Therefore, this application can dynamically adjust the cleaning time and area according to plaque content information, avoiding ineffective repeated cleaning; secondly, it automatically switches the cleaning area after reaching a preset cleaning standard, realizing an intelligent brushing process. This not only improves cleaning efficiency but also reduces the risk of tooth wear and improves the user's brushing experience, making it more targeted and scientific compared to traditional fixed-time or manual judgment methods.

[0089] Based on the above embodiments, this application provides a structural composition of an oral hygiene device. Figure 9 Schematic diagram of the components of oral hygiene equipment Figure 3 ,like Figure 9 As shown, the oral cleaning device 10 proposed in this application embodiment may include a processor 11, a memory 12 storing instructions executable by the processor 11, and further, the oral cleaning device 10 may also include a communication interface 13 and a bus 14 for connecting the processor 11, the memory 12 and the communication interface 13.

[0090] In the embodiments of this application, the processor 11 can be at least one of the following: Application-Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), Central Processing Unit (CPU), Controller, Microcontroller, and Microprocessor. It is understood that for different devices, the electronic device used to implement the above-mentioned processor function can also be other types, and this application embodiment does not specifically limit this. The oral cleaning device 10 may also include a memory 12, which can be connected to the processor 11. The memory 12 is used to store executable program code, which includes computer operation instructions. The memory 12 may include high-speed RAM memory and may also include non-volatile memory, such as at least two disk drives.

[0091] In embodiments of this application, bus 14 is used to connect communication interface 13, processor 11, and memory 12, as well as the mutual communication between these devices.

[0092] In embodiments of this application, memory 12 is used to store instructions and data.

[0093] Further, in an embodiment of this application, the processor 11 is configured to determine a first location in the oral cavity to be cleaned, and calculate the first plaque content information corresponding to the first location through the microcontroller unit in the oral cleaning device; perform cleaning processing on the first location based on the first content information to obtain a first cleaning result, and determine whether the first cleaning result meets a first preset condition; if the first cleaning result meets the first preset condition, determine that the first location has been cleaned, and the oral cleaning device prompts the user that the current location has been cleaned or prompts the user to clean a second location; wherein, the prompt includes one or more of sound prompts, light prompts, image prompts, and vibration prompts, and the second location includes other locations in the oral cavity besides the first location.

[0094] In practical applications, the aforementioned memory 12 can be volatile memory, such as random-access memory (RAM); or non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD); or a combination of the above types of memory, and provide instructions and data to the processor 11.

[0095] This application provides an oral cleaning device, which includes a photodiode and a microcontroller unit. The photodiode is used to receive reflected light signals, including red fluorescent signals reflected by dental plaque. The microcontroller unit receives a first electrical signal sent by the photodiode. The first electrical signal includes first information and second information; the first information includes red fluorescent signal information, and the second information includes red light signal information received by the photodiode from the environment. The first and second information are used to calculate the plaque content. The method includes: determining a first location in the oral cavity to be cleaned, and calculating the first plaque content information corresponding to the first location using the microcontroller unit in the oral cleaning device; cleaning the first location based on the first content information to obtain a first cleaning result, and determining whether the first cleaning result meets a first preset condition; if the first cleaning result meets the first preset condition, determining that the first location has been cleaned, and the oral cleaning device prompts the user that the current location has been cleaned or prompts the user to clean a second location; wherein the prompt includes one or more of sound prompts, light prompts, image prompts, and vibration prompts, and the second location includes other locations in the oral cavity besides the first location. Therefore, this embodiment of the application can receive the red fluorescence signal generated by dental plaque under ultraviolet light irradiation through a photodiode, and send the red fluorescence signal information (i.e., the first information) to the microcontroller unit. The microcontroller unit can then separate this signal information from the red light signal information in the environment (i.e., the second information) to obtain an accurate dental plaque reflection signal. Secondly, the microcontroller unit processes the separated signal to extract the dental plaque content information. This effectively avoids ambient light interference and improves detection accuracy. Furthermore, calculating the dental plaque content through electrical signal difference makes plaque detection more scientific and intuitive, solving the problem of existing electric toothbrushes relying on parameters such as angle and time to indirectly judge cleaning effectiveness. Moreover, this embodiment of the application can dynamically adjust the cleaning time and area based on the dental plaque content information, prioritizing high-content areas and avoiding ineffective repeated cleaning. Additionally, it automatically switches cleaning areas after reaching a preset cleaning standard, realizing an intelligent brushing process. This not only improves cleaning efficiency but also reduces the risk of tooth wear and enhances the user's brushing experience, making it more targeted and scientific compared to traditional fixed-time or manual judgment methods.

[0096] This application provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, implements the oral cleaning method described above.

[0097] Specifically, the program instructions corresponding to an oral cleaning method in this embodiment can be stored on storage media such as optical discs, hard disks, and USB flash drives. When the program instructions corresponding to an oral cleaning method in the storage media are read or executed by an electronic device, the following steps are included: The first location in the oral cavity to be cleaned is determined, and the first plaque content information corresponding to the first location is calculated by the microcontroller unit in the oral cleaning device. Based on the first content information, the first location is cleaned to obtain a first cleaning result, and it is determined whether the first cleaning result meets the first preset condition. If the first cleaning result meets the first preset condition, it is determined that the first position has been cleaned, and the oral cleaning device prompts the user that the current position has been cleaned or prompts the user to clean the second position; The prompts include one or more of the following: sound prompts, light prompts, image prompts, and vibration prompts; the second position includes other positions in the oral cavity besides the first position.

[0098] This application also provides a computer program product, including a computer program that can be executed by the processor 11 of the oral cleaning device 10 to complete the steps described in any of the foregoing methods.

[0099] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0100] This application is described with reference to schematic and / or block diagrams of implementations of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the schematic and / or block diagrams can be implemented by computer program instructions, and combinations of blocks in the schematic and / or block diagrams can be implemented. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the schematic and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0101] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in the implementation flow diagram. Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0102] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0103] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. An oral hygiene device, characterized in that, The oral hygiene device includes a photodiode and a microcontroller unit; wherein... The photodiode is used to receive at least a reflected light signal; wherein the reflected light signal includes a red fluorescent signal reflected by dental plaque; The microcontroller unit is used to receive a first electrical signal sent by the photodiode; wherein the first electrical signal includes first information and second information, the first information includes the red fluorescence signal information, the second information includes the red light signal information received by the photodiode in the environment, and the first information and the second information are used to calculate the content information of the dental plaque.

2. The oral hygiene device according to claim 1, characterized in that, The oral hygiene device also includes a light-shielding wall and a light path; wherein... The light-shielding barrier is at least used to block direct light from the light source that shines onto the photodiode; The optical path is used at least to transmit the red fluorescent signal to the photodiode.

3. A method for oral hygiene, characterized in that, The method is applied to the oral cleaning device as described in any one of claims 1-2, and the oral cleaning method includes: The first location in the oral cavity to be cleaned is determined, and the first plaque content information corresponding to the first location is calculated by the microcontroller unit in the oral cleaning device. Based on the first content information, the first location is cleaned to obtain a first cleaning result, and it is determined whether the first cleaning result meets the first preset condition. If the first cleaning result meets the first preset condition, it is determined that the first position has been cleaned, and the oral cleaning device prompts the user that the current position has been cleaned or prompts the user to clean the second position; The prompts include one or more of the following: sound prompts, light prompts, image prompts, and vibration prompts; the second position includes other positions in the oral cavity besides the first position.

4. The method according to claim 3, characterized in that, The oral cleaning device includes a brush head and a handle, the brush head oscillating about the axis of the handle to clean the oral cavity; The cleaning process at the first location based on the first content information includes: When the first content information is greater than the preset value of the dental plaque content, the brush head swings at a first angle to clean the first position.

5. The method according to claim 4, characterized in that, The first cleaning result includes second information on the amount of dental plaque corresponding to the first location; The step of determining whether the first cleaning result meets the first preset condition includes: If the second content information is less than the preset value of the dental plaque content, and the brush head swings to a preset angle, the first cleaning result is determined to meet the first preset condition. Wherein, the first angle is smaller than the preset angle.

6. The method according to claim 5, characterized in that, The first cleaning result also includes a first brushing time at the first location, and the method further includes: When the second content information is less than the preset value of the dental plaque content or the first brushing time is greater than the preset value of the brushing time, the brush head swings at a second angle to clean the first position; Wherein, the first angle is smaller than the second angle, and the second angle is smaller than the preset angle.

7. The method according to claim 3, characterized in that, The oral hygiene device includes a motor, and the prompt is a vibration prompt generated by the motor.

8. The method according to any one of claims 3-6, characterized in that, The method further includes: Acquire first data and second data corresponding to each location in the oral cavity; wherein, the first data includes plaque content information and location information before cleaning, and the second data includes plaque content information and location information after cleaning; wherein, the plaque content information before cleaning includes first content information, and the plaque content information after cleaning includes second content information; First distribution information is generated based on the plaque content information and location information of each item before cleaning; wherein, the first distribution information is used to characterize the plaque distribution before cleaning; A second distribution information is generated based on the plaque content information and location information of each of the cleaned items; wherein, the second distribution information is used to characterize the distribution of plaque after cleaning; A first reminder message is generated based on the second distribution information and a preset tolerance threshold; wherein the first reminder message includes one or more of cleaning intensity information and cleaning frequency information.

9. The method according to claim 8, characterized in that, The second data also includes a second brushing time corresponding to each position, the second brushing time including the first brushing time, and the method further includes: A third distribution information is generated based on each second brushing duration and the location information; wherein, the third distribution information is used to characterize the cleaning duration of different locations; A second reminder message is generated based on the third distribution information, the third preset threshold, and the fourth preset threshold; wherein, the second reminder message includes one or more of cleaning intensity information and cleaning frequency information; or, An oral hygiene score is generated based on the first distribution information and the second distribution information, and an oral hygiene report is generated based on one or more of the oral hygiene score, the first reminder information, the second reminder information, the first distribution information, the second distribution information, and the third distribution information.

10. An oral hygiene device, characterized in that, The oral hygiene device includes: a processor and a memory; wherein... The memory is used to store computer programs that can run on the processor; The processor is configured to perform the method as described in any one of claims 3-9 when running the computer program.

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