Oral irrigator with automatic mouthpiece recognition

Abstract

The oral cavity automatic recognition oral irrigator of the present application collects the current pose data of the oral irrigator nozzle through a multi-axis sensor, measures the distance data between the oral irrigator nozzle and the human lips through a distance measuring sensor, and then performs oral irrigator entrance and exit cavity automatic recognition through a control device according to the received current pose data and each distance data, so as to control the automatic opening and closing of the oral irrigator water spraying. The present application realizes the automatic start and stop of the oral irrigator, improves the real-time responsiveness, ensures that the nozzle can start and stop spraying water in real time under the condition of entering and exiting the oral cavity, and can avoid the situation of personal injury caused by the user, especially children, using the oral irrigator incorrectly.

Description

Technical Field

[0001] This invention relates to the field of oral irrigators, and in particular to an oral irrigator that can automatically identify when it enters or leaves the oral cavity. Background Technology

[0002] A water flosser is an auxiliary tool for cleaning the oral cavity. It uses pulsed water jets to clean teeth and between teeth and is suitable for use by multiple family members.

[0003] When using a traditional water flosser, you need to place your finger on the power switch, insert the nozzle into your mouth, press the power switch to start the water spray, and after you finish rinsing your mouth, you need to press the power switch to stop the water spray before removing the nozzle to prevent water from spraying randomly or damaging your eyes. The entire process requires manual adjustment of the water spray switch, making the rinsing process very discontinuous. Moreover, when using a water flosser, because the water spray switch is manually adjusted, children with poor self-control and safety awareness are more likely to cause water damage to their eyes due to operational errors or playing. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a water flosser that can automatically identify entry and exit from the oral cavity, so as to solve the above-mentioned technical problems in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a water flosser capable of automatically identifying entry and exit from the oral cavity. The system includes: at least one multi-axis sensor for acquiring the current pose data of the water flosser nozzle; multiple distance sensors; each distance sensor for measuring the distance data between the water flosser nozzle and the human lips; and a control device connected to the multi-axis sensor and the distance sensors for determining whether the water flosser needs to be started or stopped based on the received current pose data and the distance data, and controlling the automatic start and stop of the water spraying of the water flosser based on the determination result.

[0006] In one embodiment of the present invention, the control device includes: a data storage module for storing a start-up threshold data set and a stop-down threshold data set; wherein the start-up threshold data set includes start-up distance thresholds corresponding to multiple postures; the stop-down threshold data set includes stop-down distance thresholds corresponding to multiple postures; a processing module connected to the data storage module for automatically identifying the opening and closing of the water flosser in and out of the oral cavity based on the start-up threshold data set and the stop-down threshold data set, according to each current posture data and each distance data, to obtain identification results; and an opening / closing control module connected to the processing module for generating corresponding opening or closing signals according to the identification results, for controlling the opening and closing of the water flosser spray.

[0007] In one embodiment of the present invention, the processing module includes: a posture recognition unit, configured to recognize the current posture corresponding to the current pose data; a distance threshold matching unit, connected to the posture recognition unit, configured to match the current posture with a start distance threshold or a close distance threshold corresponding to the current posture in a start threshold data group and a close threshold data group; an inlet oral cavity recognition unit, connected to the distance threshold matching unit, configured to automatically recognize the inlet oral cavity based on the start distance threshold and various spacing data when a start distance threshold is matched, thereby obtaining an automatic inlet oral cavity recognition result; and an outlet oral cavity recognition unit, connected to the distance threshold matching unit, configured to automatically recognize the inlet oral cavity based on the close distance threshold and various spacing data when a close distance threshold is matched, thereby obtaining an automatic outlet oral cavity recognition result.

[0008] In one embodiment of the present invention, the opening and closing control module is used to generate the opening signal when the automatic identification result of the inlet oral cavity corresponds to the inlet oral cavity state and the multi-axis sensor is determined to be in a continuous relatively stationary state based on the current pose data of the multi-axis sensor; and to generate the closing signal when the automatic identification result of the outlet oral cavity corresponds to the outlet oral cavity state.

[0009] In one embodiment of the present invention, the oral cavity identification unit includes an oral cavity identification judgment subunit, which is used to compare the minimum spacing data obtained by comparing various spacing data with the start distance threshold. If the difference between the two is within the start distance error range, an automatic oral cavity identification result corresponding to the oral cavity state is generated.

[0010] In one embodiment of the present invention, the oral cavity recognition unit includes an oral cavity recognition judgment subunit, which is used to compare the minimum spacing data obtained by comparing various spacing data with the closing distance threshold. If the difference between the two is within the range of the starting distance error, an automatic oral cavity recognition result corresponding to the oral cavity state is generated.

[0011] In one embodiment of the present invention, the control device further includes: a power-on control module, configured to send a power-on signal for controlling power-on when receiving current pose data that meets the wake-up pose conditions collected by a multi-axis sensor, and to instruct each ranging sensor to start measuring the distance data between the nozzle and the human lips.

[0012] In one embodiment of the present invention, each ranging sensor is symmetrically arranged near the connection between the water flosser nozzle and the water flosser head; the multi-axis sensor is located on the water flosser head.

[0013] In one embodiment of the present invention, the multi-axis sensor is at least a six-axis sensor.

[0014] In one embodiment of the present invention, the shut-off threshold data group further includes: a deceleration threshold data group, used to control the water jet of the water flosser to decelerate when the current posture matches the deceleration threshold data group and the smallest spacing data among the spacing data falls into the deceleration threshold data group.

[0015] As described above, this invention is a water flosser with automatic entry and exit from the oral cavity, offering the following advantages: This invention uses a multi-axis sensor to collect the current position data of the water flosser nozzle, a distance sensor to measure the distance between the nozzle and the user's lips, and a control device to automatically identify the water flosser's entry and exit from the oral cavity based on the received current position data and distance data, thereby controlling the automatic on / off operation of the water flosser. This invention achieves automatic start and stop of the water flosser, improving real-time responsiveness and ensuring that the water spray can be started and stopped in real time even when the nozzle is in or out of the oral cavity. This avoids personal injury caused by incorrect operation by users, especially children, when using the water flosser. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of a water flosser that can automatically identify entry and exit from the oral cavity, according to an embodiment of the present invention.

[0017] Figure 2 The diagram shown is a schematic of a water flosser that can automatically identify entry and exit from the oral cavity, according to an embodiment of the present invention.

[0018] Figure 3 The diagram shown is a flowchart of an automatic oral cavity identification method according to an embodiment of the present invention.

[0019] Figure 4 The diagram shown is a flowchart of an automatic oral cavity recognition method according to an embodiment of the present invention. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0021] It should be noted that in the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present invention. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical system, and operation may be made without departing from the spirit and scope of the invention. The following detailed description should not be considered limiting, and the scope of the embodiments of the invention is defined only by the claims of the published patents. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Spatially related terms, such as “upper,” “lower,” “left,” “right,” “below,” “below,” “lower part,” “above,” “upper part,” etc., may be used herein to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0022] Throughout this specification, when it is said that a part is "connected" to another part, this includes not only "direct connection" but also "indirect connection" by placing other elements in between. Furthermore, when it is said that a part "includes" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather means that other constituent elements may also be included.

[0023] The terms "first," "second," and "third," etc., used herein are for the purpose of describing various parts, components, regions, layers, and / or segments, but are not limiting. These terms are used only to distinguish one part, component, region, layer, or segment from others. Therefore, the "first part," "component," "region," "layer," or "segment" described below may refer to a "second part," "component," "region," "layer," or "segment" without departing from the scope of this invention.

[0024] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0025] This invention provides a water flosser with automatic entry and exit from the oral cavity. It uses a multi-axis sensor to collect the current position data of the water flosser nozzle, and a distance sensor to measure the distance between the nozzle and the user's lips. A control device then automatically identifies the water flosser's entry and exit from the oral cavity based on the received current position data and distance data, thereby controlling the automatic on / off operation of the water flosser. This invention achieves automatic start and stop of the water flosser, improving real-time responsiveness and ensuring that the water spray can be started and stopped in real time even when the nozzle is in or out of the mouth. This avoids personal injury caused by incorrect operation by users, especially children.

[0026] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can readily implement it. The present invention can be embodied in many different forms and is not limited to the embodiments described herein.

[0027] like Figure 1 This invention presents a schematic diagram of the structure of a water flosser that can automatically identify entry and exit from the oral cavity, according to an embodiment of the present invention.

[0028] The oral irrigator includes:

[0029] At least one multi-axis sensor 1 (only one is shown in the figure) is used to collect the current pose data of the water flosser nozzle;

[0030] Multiple distance sensors 2 (only 4 are shown in the figure); each distance sensor is used to measure the distance data between the nozzle of the oral irrigator corresponding to the current distance sensor and the human lips;

[0031] The control device 3 is connected to each multi-axis sensor 1 and each distance sensor 2, and is used to automatically identify the entry and exit of the oral irrigator based on the received current posture data and each distance data, so as to control the automatic opening and closing of the oral irrigator spraying water.

[0032] In one embodiment, such as Figure 2 As shown, the oral irrigator includes: an oral irrigator handle, an oral irrigator head, and an oral irrigator nozzle, wherein the oral irrigator handle is connected to the oral irrigator head, and the oral irrigator head is connected to the oral irrigator nozzle.

[0033] In one specific embodiment, both the multi-axis sensor 1 and the distance sensor 2 are located on the head of the water flosser.

[0034] In one embodiment, if there is one multi-axis sensor, the current pose data it collects is the current pose data of the water flosser nozzle; if there are multiple multi-axis sensors, the current pose data collected by each sensor are used together to obtain the current pose data of the water flosser nozzle.

[0035] In one specific embodiment, each ranging sensor 2 is symmetrically arranged near the connection between the water flosser nozzle and the water flosser head.

[0036] In one specific embodiment, the multi-axis sensor 1 is at least a six-axis sensor. For example, it can be a six-axis sensor, a nine-axis sensor, or a twelve-axis sensor, etc. A six-axis sensor typically refers to a three-axis gyroscope + a three-axis accelerometer; a nine-axis sensor typically refers to a three-axis gyroscope + a three-axis accelerometer + a three-axis magnetometer, although there are also six-axis accelerometer + three-axis gyroscope and six-axis gyroscope + three-axis accelerometer combinations. As an integrated sensor module, the nine-axis sensor reduces circuit board space and overall footprint, making it more suitable for use in lightweight and portable electronic devices and wearable products.

[0037] Among them, a three-axis gyroscope simultaneously measures position, trajectory, and acceleration in six directions. A single-axis gyroscope can only measure quantities in two directions, meaning a system would require three gyroscopes, while a single three-axis gyroscope can replace three single-axis gyroscopes. Advantages: Three-axis gyroscopes are small, lightweight, simple in structure, reliable, more sensitive, and more accurate. A three-axis magnetometer, also known as an electronic compass, is widely used in drones, smartwatches, and navigation devices. For detecting changes in object motion, the three-axis magnetometer plays a crucial role in absolute pointing, ensuring stable flight, assisted navigation, and other diverse functions. Therefore, the reliability of the three-axis magnetometer is the cornerstone of the stable operation of these devices. A three-axis accelerometer works based on the fundamental principle of acceleration. Acceleration is a spatial vector; on the one hand, to accurately understand the motion state of an object, its components on three coordinate axes must be measured; on the other hand, in situations where the direction of the object's motion is unknown beforehand, only a three-axis accelerometer can detect the acceleration signal. Since triaxial accelerometers are also based on the principle of gravity, they can achieve tilt angles of ±90 degrees or 0-360 degrees along two axes. After calibration, their accuracy is higher than that of dual-axis accelerometers when measuring angles greater than 60 degrees. Advantages: The advantage of triaxial accelerometers is that they are useful in situations where the direction of an object's motion is unknown beforehand; only a three-dimensional accelerometer can detect acceleration signals. Three-dimensional accelerometers are small and lightweight, can measure spatial acceleration, and can comprehensively and accurately reflect the motion properties of objects.

[0038] In one embodiment, the ranging sensor may be an ultrasonic ranging sensor, a laser ranging sensor, an infrared ranging sensor, or a 24GHz radar sensor.

[0039] In one embodiment, the control device includes:

[0040] A data storage module is used to store a start-up threshold data set and a stop-down threshold data set. The start-up threshold data set includes start-up distance thresholds corresponding to multiple postures. The stop-down threshold data set includes stop-down distance thresholds corresponding to multiple postures. For example, the start-up threshold data set contains P threshold data points, P≥1, where each of the P thresholds represents the distance between the nozzle and the human lip in one of the P postures. The stop-down threshold data set contains Q threshold data points, Q≥1, where each of the Q thresholds represents the distance between the nozzle and the human lip in one of the Q postures.

[0041] The processing module, connected to the data storage module, is used to automatically identify the entry and exit of the oral irrigator based on the start threshold data group and the stop threshold data group, according to each current posture data and each distance data, so as to obtain the identification result;

[0042] An on / off control module, connected to the processing module, is used to generate a corresponding on or off signal based on the recognition result, so as to control the on / off of the water spray from the water flosser.

[0043] It should be noted that the type of pose can be set according to requirements. It can be a broad type corresponding to a certain range of pose data or a refined type corresponding to each pose data. For example, poses include: upward extension, downward extension, or vertical extension.

[0044] In one embodiment, the processing module includes:

[0045] A pose recognition unit is used to identify the current pose corresponding to the current pose data.

[0046] A distance threshold matching unit, connected to the posture recognition unit, is used to match the current posture with the start distance threshold or the stop distance threshold corresponding to the current posture in the start distance threshold data group and the stop distance threshold data group.

[0047] The oral cavity recognition unit is connected to the distance threshold matching unit and is used to automatically recognize the oral cavity based on the starting distance threshold and various spacing data when a starting distance threshold is matched, so as to obtain the automatic oral cavity recognition result.

[0048] The oral cavity recognition unit is connected to the distance threshold matching unit. When a closing distance threshold is matched, the unit performs automatic oral cavity recognition based on the closing distance threshold and various spacing data to obtain the automatic oral cavity recognition result.

[0049] In one specific embodiment, the automatic entry point identification method includes: before the water flosser enters the oral cavity, the water flosser is held in hand, the nozzle moves towards the oral cavity, and each distance sensor measures the distance between the nozzle tip and the human lips in real time. If the distance data of any distance sensor exceeds a threshold range, the multi-axis sensor collects the current pose data of the water flosser nozzle, the pose recognition unit identifies the corresponding current pose based on the current pose data, and the oral cavity entry identification unit performs automatic entry into the oral cavity identification based on the start distance threshold matched with the pose and the distance data to obtain the automatic entry into the oral cavity identification result.

[0050] Furthermore, the oral cavity recognition unit includes:

[0051] The oral cavity entry identification and judgment subunit is used to compare the minimum distance data obtained by comparing various distance data with the start-up distance threshold. If the difference between the two is within the start-up distance error range, an automatic oral cavity entry identification result corresponding to the oral cavity entry state is generated. Preferably, the start-up distance error range is within ±5%.

[0052] In one embodiment, the automatic exit identification method includes: after the water flosser enters the oral cavity, the water flosser is held and the nozzle moves outward from the oral cavity. If the distance data of the distance measuring sensor exceeds an exit threshold range, the multi-axis sensor collects the current pose data of the water flosser nozzle, and the pose recognition unit identifies the corresponding current pose based on the current pose data. Then, the exit oral cavity identification unit performs automatic entry into the oral cavity identification based on the closing distance threshold matched with the pose and the distance data to obtain the automatic exit oral cavity identification result.

[0053] Furthermore, the oral cavity recognition unit includes:

[0054] The exit mouth recognition and judgment subunit is used to compare the minimum spacing data obtained by comparing various spacing data with the closing distance threshold. If the difference between the two is within the closing distance error range, an automatic exit mouth recognition result corresponding to the exit mouth state is generated. Preferably, the closing distance error range is within ±5%.

[0055] In one embodiment, the opening / closing control module generates the opening signal when the automatic identification result of the inlet cavity corresponds to the inlet cavity state and the multi-axis sensor is determined to be in a relatively stationary state based on the current pose data of the multi-axis sensor; and generates the closing signal when the automatic identification result of the outlet cavity corresponds to the outlet cavity state.

[0056] It should be noted that the method for determining that the multi-axis sensor is in a relatively stationary state is as follows:

[0057] If the current pose data of the multi-axis sensor changes or remains unchanged within a certain range within a certain time threshold, it is judged as a relatively static state; if it changes beyond a certain range, it is judged as a non-relatively static state.

[0058] In one embodiment, the control device further includes:

[0059] The power-on control module is used to send a power-on signal to control the power-on when it receives current pose data that meets the wake-up pose conditions collected by the multi-axis sensor, and to instruct each ranging sensor to start measuring the distance data between the nozzle and the human lips.

[0060] This method is mainly used when the water flosser is not turned on. It determines whether the wake-up posture conditions are met based on the motion threshold set by the multi-axis sensor. If the conditions are met, the power-on control module sends a power-on signal to control the power-on and instructs each distance sensor to start measuring the distance data between the nozzle and the human lips.

[0061] In one embodiment, the shut-off threshold data group further includes a deceleration threshold data group, used to control the water spray of the water flosser to decelerate when the current posture matches the deceleration threshold data group and the smallest spacing data among the spacing data falls into the deceleration threshold data group.

[0062] Specifically, the control device matches the deceleration threshold data group corresponding to the current posture in the closing threshold data group according to the current posture, and determines whether the minimum spacing data of each spacing data falls into the deceleration threshold data group. When this distance range is reached, the device first decelerates to reduce the water impact force of the water flosser.

[0063] To better illustrate the above-mentioned oral irrigator that can automatically identify entry and exit from the oral cavity, the present invention provides the following specific embodiments.

[0064] Example 1: A water flosser that automatically recognizes entry and exit points in the oral cavity; it includes:

[0065] The water flosser is equipped with N multi-axis sensors and M distance sensors, where N≥1 and M≥2.

[0066] The oral irrigator includes a control system, which comprises a data unit, a processing unit, and a control unit, wherein:

[0067] The data unit contains a distance threshold data set for determining the opening and closing of the water flosser. The distance threshold data set includes an activation threshold data set and a deactivation threshold data set. The activation threshold data set contains P threshold data points, where P ≥ 1, and each P threshold represents the distance between the nozzle and the human lips under P water flossing postures. The deactivation threshold data set contains Q threshold data points, where Q ≥ 1, and each Q threshold represents the distance between the nozzle and the human lips under Q water flossing postures. The processing unit compares the distance between the nozzle and the human lips measured by M distance sensors and compares the smaller distance value with the corresponding distance threshold data in the data unit. The control unit controls the opening and closing of the water flosser.

[0068] The specific method for automatic identification using the above-mentioned water flosser is as follows:

[0069] The automatic identification method is as follows:

[0070] Automatic entry point recognition method: such as Figure 3 As shown, firstly, based on the motion threshold set by the multi-axis sensors, the water flosser is interrupted and woken up, which is equivalent to turning on the water flosser. If it has already been manually turned on by pressing the button, this step can be ignored. Before the water flosser enters the mouth, hold the water flosser and move the nozzle towards the mouth. M ranging sensors measure the distance between the nozzle tip and the lips in real time. At the same time, the multi-axis sensors detect the angle and posture of the nozzle in real time. The processing unit determines which ranging sensor is closest to the lips and uses the data detected by this ranging sensor as valid data. Combined with the posture information detected by the multi-axis sensors, it is determined whether the distance information detected by the valid ranging sensor in this posture matches the corresponding start-up threshold data. When the error is within ±a%, the control unit controls the water flosser to turn on, where a is preferably equal to 5.

[0071] Automatic export identification methods: such as Figure 4 As shown, after the nozzle of the water flosser enters the inlet, M ranging sensors measure the distance between the nozzle tip and the human lips in real time. At the same time, a multi-axis sensor detects the angle and posture of the nozzle in real time. The processing unit determines which ranging sensor is closest to the human lips and uses the data detected by this ranging sensor as valid data. Combined with the posture information detected by the current multi-axis sensor, it is determined whether the distance information detected by the valid ranging sensor in this posture matches the corresponding closing threshold data. When the error is within ±b%, the control unit controls the water flosser to close. b is preferably equal to 5.

[0072] In this embodiment, the multi-axis sensor on the water flosser head determines which ranging sensor is the primary basis for judgment under the current angle and posture of the water flosser, and adjusts the ranging threshold for entering and exiting the oral cavity in real time according to the angle and posture. If the in-oral cavity ranging threshold condition is met, the multi-axis sensor is in a static state (the nozzle is placed in the oral cavity and is relatively stationary), and the water flosser starts spraying water. If water is already spraying, the second point is repeated to switch to the exiting oral cavity threshold judgment. If the condition is met, the water flosser immediately stops spraying water. That is, the angle and posture of the multi-axis sensor are sampled in real time to adjust the in-oral cavity threshold of the ranging sensor. Under different postures, different ranging thresholds for the face are adjusted to improve real-time responsiveness and ensure that the water spraying can be started and stopped in real time when the nozzle enters and exits the oral cavity.

[0073] In summary, the oral irrigator of the present invention, capable of automatically identifying entry and exit from the oral cavity, collects the current posture data of the irrigator nozzle through a multi-axis sensor, measures the distance data between the irrigator nozzle and the human lips through a distance measuring sensor, and then, through a control device, automatically identifies the entry and exit of the irrigator from the oral cavity based on the received current posture data and distance data, thereby controlling the automatic start and stop of the irrigator's water spray. This invention achieves automatic start and stop of the irrigator, improving real-time responsiveness and ensuring that the water spray can be started and stopped in real time even when the nozzle is in or out of the oral cavity. This avoids personal injury caused by incorrect operation by users, especially children, when using the irrigator. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A mouth-accessible automatically identifiable oral irrigator, characterized by, The oral irrigator comprises: at least one multi-axis sensor for collecting current pose data of the oral irrigator nozzle; a plurality of distance measuring sensors; each distance measuring sensor is used to measure the distance data between the oral irrigator nozzle and the human lips; a control device connected to the multi-axis sensor and the distance measuring sensors, for judging whether the oral irrigator needs to be started or stopped according to the received current pose data and distance data, and controlling the automatic start and stop of the oral irrigator water spray according to the judgment result; the control device comprises: a data storage module for storing a start threshold data set and a stop threshold data set; wherein the start threshold data set comprises a start distance threshold corresponding to a plurality of poses; and the stop threshold data set comprises a stop distance threshold corresponding to a plurality of poses; a processing module connected to the data storage module, for automatically identifying the start and stop of the oral irrigator inlet cavity and outlet cavity based on the start threshold data set and the stop threshold data set according to the current pose data and the distance data, to obtain an identification result; a start and stop control module connected to the processing module, for generating a corresponding start signal or stop signal according to the identification result, to control the start and stop of the oral irrigator water spray; the processing module comprises: a pose recognition unit for recognizing the current pose corresponding to the current pose data; a distance threshold matching unit connected to the pose recognition unit, for matching the start distance threshold or the stop distance threshold corresponding to the current pose in the start threshold data set and the stop threshold data set according to the current pose; an inlet cavity recognition unit connected to the distance threshold matching unit, for automatically identifying the inlet cavity according to the start distance threshold and the distance data when the start distance threshold is matched, to obtain an inlet cavity automatic identification result; an outlet cavity recognition unit connected to the distance threshold matching unit, for automatically identifying the outlet cavity according to the stop distance threshold and the distance data when the stop distance threshold is matched, to obtain an outlet cavity automatic identification result.

2. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, The start and stop control module is used to generate the start signal when the inlet cavity automatic identification result corresponds to the inlet cavity state and the multi-axis sensor is in a continuous relative static state based on the current pose data of the multi-axis sensor, and generate the stop signal when the outlet cavity automatic identification result corresponds to the outlet cavity state.

3. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, The inlet cavity recognition unit comprises: an inlet cavity recognition judgment subunit for comparing the minimum distance data obtained by comparing the distance data with the start distance threshold, and generating an inlet cavity automatic identification result corresponding to the inlet cavity state if the difference between the two is within the start distance error range.

4. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, The outlet cavity recognition unit comprises: an outlet cavity recognition judgment subunit for comparing the minimum distance data obtained by comparing the distance data with the stop distance threshold, and generating an outlet cavity automatic identification result corresponding to the outlet cavity state if the difference between the two is within the start distance error range.

5. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, The control device further comprises: The start-up control module is configured to send a start-up signal for controlling start-up when receiving current pose data collected by the multi-axis sensor and meeting a wake-up pose condition, and to enable each distance sensor to start measuring the distance data between the nozzle and the human lips.

6. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, Each distance sensor is symmetrically arranged near the connection between the oral irrigator nozzle and the oral irrigator head; and the multi-axis sensor is arranged on the oral irrigator head.

7. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, The multi-axis sensor is at least a six-axis sensor.

8. The mouth-accessible automatic oral cavity recognition oral irrigator of claim 1, wherein, The closing threshold data set further includes: The deceleration threshold data set is configured to control the oral irrigator to decelerate when the current pose matches the deceleration threshold data set and the smallest distance data among the distance data falls into the deceleration threshold data set.

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