Oral cleaning device, control method, computing device, and storage medium

By introducing vibrations and sweeping motions with random cleaning angles into oral cleaning devices, the problem that existing electric toothbrushes cannot adapt to different users' oral conditions is solved, thus achieving the satisfaction of personalized cleaning needs and improving cleaning effectiveness.

WO2026025637A1PCT designated stage Publication Date: 2026-02-05SHENZHEN SOOCAS TECH CO LTD
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Patent Information

Application Number
PCT/CN2024/124288
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-30
Filing Date
2024-10-11
Publication Date
2026-02-05

AI Technical Summary

Technical Problem

Existing oral hygiene tools, such as electric toothbrushes, cannot flexibly adapt to the different oral conditions of different users, resulting in an inability to meet personalized cleaning needs and potentially causing damage to teeth.

Method used

An oral cleaning device was designed. By implementing vibration and sweeping at random cleaning angles on the cleaning head, combined with a target drive signal generated by a random algorithm, the cleaning head is driven to perform flexible cleaning movements in the oral cavity area, adapting to the actual conditions of different users.

Benefits of technology

It achieves flexible and versatile cleaning modes, improves cleaning effectiveness, avoids damage to teeth, and provides a better cleaning experience and comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

Embodiments in the specification provide an oral cleaning device, a control method, a computing device, and a storage medium. The oral cleaning device comprises a handpiece, a driving unit at least partially accommodated in the handpiece, and a cleaning head connected to the driving unit. The handpiece is configured for acquiring a starting or adjusting signal and sending a target driving signal to the driving unit, wherein the target driving signal carries a random cleaning angle. The driving unit is configured for driving, in response to the target driving signal, the cleaning head to perform a cleaning motion according to the random cleaning angle. The cleaning head is configured for making contact with an oral cavity region to be cleaned, and performing an oral cavity cleaning operation in said oral cavity region on the basis of the driving by the driving unit. The present invention enables flexible oral cavity cleaning on the basis of the random cleaning angle, thereby adapting to the actual conditions of different oral cavities requiring care, and meeting users' personal oral care requirements.
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Description

Oral cleaning device, control method, computing device, and storage medium TECHNICAL FIELD

[0001] Embodiments of the present specification relate to the technical field of oral cleaning, and in particular to an oral cleaning device. One or more embodiments of the present specification also relate to a control method, a computing device, a computer-readable storage medium, and a computer program product. BACKGROUND

[0002] With the continuous development of technology and the continuous improvement of residents' living standards, the public also pays attention to oral care. Therefore, various types of oral cleaning tools appear on the market to meet the public's demand for oral care.

[0003] The oral cleaning tools in the prior art, such as electric toothbrushes, can only perform high-frequency reciprocating vibration at a preset frequency. This single cleaning mode ignores the different conditions of the oral cavities to be cared for by different users. Therefore, it cannot flexibly adapt to the actual conditions of different oral cavities to be cared for and cannot meet the individualized oral care needs of users.

[0004] SUMMARY

[0005] Therefore, embodiments of the present specification provide an oral cleaning device. One or more embodiments of the present specification also relate to a control method, a computing device, a computer-readable storage medium, and a computer program product to solve the technical defect that the oral cleaning tools in the prior art cannot flexibly adapt to the actual conditions of different oral cavities to be cared for.

[0006] According to a first aspect of embodiments of the present specification, an oral cleaning device is provided, comprising a holding portion, a driving unit at least partially accommodated in the holding portion, and a cleaning head connected with the driving unit;

[0007] The holding portion is configured to obtain a starting or adjusting signal and send a target driving signal to the driving unit, wherein the target driving signal carries a random cleaning angle.

[0008] The driving unit is configured to drive the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal.

[0009] The cleaning head is configured to contact a to-be-cleaned oral cavity area and perform an oral cleaning operation in the to-be-cleaned oral cavity area based on the driving of the driving unit.

[0010] According to a second aspect of the embodiments of the present specification, a control method applied to a control unit in an oral cleaning device is provided, the oral cleaning device comprising a holding portion, a driving unit at least partially accommodated in the holding portion, and a cleaning head connected with the driving unit, comprising:

[0011] determining a target driving signal in response to the obtained starting or adjusting signal, wherein the target driving signal carries a random cleaning angle;

[0012] sending the target driving signal to the driving unit, so that the driving unit drives the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal.

[0013] Further, the determining the target driving signal in response to the obtained starting or adjusting signal further comprises:

[0014] determining a reference position of a driving shaft in the driving unit in response to the obtained starting or adjusting signal;

[0015] generating the target driving signal based on the reference position and the random cleaning angle, wherein the random cleaning angle is generated by the control unit based on a random angle generation algorithm.

[0016] According to a third aspect of the embodiments of the present specification, a computing device is provided, comprising:

[0017] a memory and a processor;

[0018] the memory is configured to store computer programs / instructions, and the processor is configured to execute the computer programs / instructions, which realize the steps of the above control method when executed by the processor.

[0019] According to a fourth aspect of the embodiments of the present specification, a computer readable storage medium is provided, which stores computer programs / instructions, which realize the steps of the above control method when executed by the processor.

[0020] According to a fifth aspect of the embodiments of the present specification, a computer program product is provided, comprising computer programs / instructions, which realize the steps of the above control method when executed by the processor.

[0021] The one or more embodiments of the specification provide an oral cleaning device, which comprises a holding part, a driving unit at least partially accommodated in the holding part, and a cleaning head connected with the driving unit; the holding part is used to obtain a starting or adjusting signal, and send a target driving signal carrying a random cleaning angle to the driving unit; the driving unit is used to drive the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal; the cleaning head is used to contact a to-be-cleaned oral cavity area and perform an oral cleaning operation in the to-be-cleaned oral cavity area based on the driving of the driving unit, so as to flexibly perform oral cleaning based on the random cleaning angle, thereby adapting to different actual conditions of the to-be-cared oral cavity and meeting the personalized oral care needs of a user. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a structural schematic diagram of an oral cleaning device according to an embodiment of the specification;

[0023] FIG. 2 is a flowchart of a control method according to an embodiment of the specification;

[0024] FIG. 3 is a flowchart of another control method according to an embodiment of the specification;

[0025] FIG. 4 is a process flowchart of a control method according to an embodiment of the specification;

[0026] FIG. 5 is a structural block diagram of a computing device according to an embodiment of the specification;

[0027] In the above description, the following reference signs are used:

[0028] The cleaning head 102, the holding part 104, and the user interaction control 106. DETAILED DESCRIPTION

[0029] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the specification. However, the specification can be practiced without the specific details, other than those described herein, and it is understood that the specification will encompass many variations apparent to one skilled in the art upon reading this description.

[0030] The terms used in the one or more embodiments of the specification are merely for the purpose of describing specific embodiments, and are not intended to limit the one or more embodiments of the specification. The singular forms "a", "an" and "the" used in the one or more embodiments of the specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in the one or more embodiments of the specification means and includes any or all possible combinations of one or more associated listed items.

[0031] It should be understood that, although the terms first, second, etc. can be employed in describing various information in one or more embodiments of the present specification, such information should not be limited to these terms. These terms are only used to differentiate one piece of information from another piece of information of the same type. For example, without departing from the scope of one or more embodiments of the present specification, first can also be referred to as second, and similarly, second can also be referred to as first. Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "upon" or "in response to the determination".

[0032] In addition, it should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in one or more embodiments of the present specification are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation portal for user to choose authorization or refusal.

[0033] With the continuous development of technology and the continuous improvement of residents' living standards, the public also pays attention to oral care, therefore, various types of oral cleaning tools appear on the market to meet the public's demand for oral care.

[0034] The oral cleaning tools in the prior art, such as electric toothbrushes, can only perform high-frequency reciprocating vibration at a preset frequency, and such a single cleaning mode ignores the different conditions of the oral cavities to be cared for by different users; for example, the electric toothbrushes on the market drive the brush head to produce high-frequency vibration through the rapid vibration of the motor, which instantaneously decomposes toothpaste into fine foam to deeply clean the interdental spaces. However, the current electric toothbrushes can only achieve high-frequency reciprocating vibration at a preset frequency, but the oral cavities to be cleaned by different users are different, and the teeth in different regions of the same user are also different, and the existing electric toothbrushes cannot meet the personalized cleaning needs of users. In addition, while the electric toothbrush is vibrating, a large amplitude of sweeping can improve the efficient cleaning of the oral cavity to some extent, but it still has the problems of easily hitting the teeth and hurting the teeth, which affects the comfort of users; and the electric toothbrushes in the prior art can only sweep according to a preset trajectory, but the oral cavities to be cleaned by different users are different, and the teeth in different regions of the same user are also different, and the existing electric toothbrushes cannot meet the personalized cleaning needs of users. That is to say, the electric toothbrush has a big defect, first, the current electric toothbrush can only achieve high-frequency reciprocating vibration at a preset frequency, and cannot provide more flexible and variable vibration to adapt to different oral cavities to be cleaned; second, the electric toothbrush can only sweep according to a preset trajectory, and cannot provide more flexible and variable sweeping to adapt to different oral cavities to be cleaned.

[0035] Based on this, in the present specification, an oral cleaning device is provided; one or more embodiments of the present specification also relate to a control method, a computing device, a computer-readable storage medium, and a computer program product, which are described in detail one by one in the following embodiments.

[0036] In combination with FIG. 1, FIG. 1 is a structural schematic diagram of an oral cleaning device according to an embodiment of the present specification. The oral cleaning device according to one or more embodiments of the present specification comprises:

[0037] The oral cleaning device comprises a holding portion 104, a driving unit at least partially accommodated in the holding portion 104, and a cleaning head 102 connected to the driving unit;

[0038] The holding portion 104 is configured to obtain a starting or adjusting signal and send a target driving signal to the driving unit, wherein the target driving signal carries a random cleaning angle;

[0039] The driving unit is configured to drive the cleaning head 102 to perform a cleaning motion according to the random cleaning angle in response to the target driving signal;

[0040] The cleaning head 102 is configured to contact a to-be-cleaned oral area and perform an oral cleaning operation in the to-be-cleaned oral area based on the driving of the driving unit.

[0041] The oral cleaning device can be understood as a device for performing an oral cleaning operation. For example, the oral cleaning device can be an electric toothbrush for performing a tooth brushing operation, a water pick for performing a water pick and tooth brushing operation, a water pick and brushing integrated machine, etc.

[0042] The holding portion 104 can be understood as a component of the oral cleaning device configured to facilitate a user to hold. For example, the holding portion 104 can be a handle component.

[0043] The driving unit can be understood as a unit for driving the cleaning head 102 to perform an oral cleaning operation in the oral cleaning device. For example, the driving unit can be a motor component, etc. The driving unit can comprise a driving shaft receiving the detachable cleaning head 102, a motor configuration for rotating the driving shaft and / or applying a vibration motion to the driving shaft.

[0044] The cleaning head 102 can be understood as a component for contacting and cleaning the oral cavity region to be cleaned, which is detachably mounted at one end of the oral cavity cleaning device; in one or more embodiments provided in the specification, the oral cavity cleaning device is an electric toothbrush, and the cleaning head 102 is a cleaning brush head; based on the cooperation between the electric toothbrush and the cleaning brush head arranged on the electric toothbrush, the tooth brushing operation on the oral cavity region to be cleaned of the user can be realized, and the oral cavity cleaning needs of the user are met.

[0045] The starting or adjusting signal can be an instruction sent by a device control end, such as a mobile terminal (mobile phone, remote controller, tablet computer), a fixed terminal (server, cloud), and the like, to the oral cavity cleaning device; or the starting or adjusting signal can be a signal sent by the user to the oral cavity cleaning device through a user interaction control 106 provided by the oral cavity cleaning device, for example, a signal sent by the user through a key operation or an instruction input operation.

[0046] The starting or adjusting signal can be a passive receiving starting or adjusting instruction of the oral cavity cleaning device, or a result obtained by the oral cavity cleaning device according to the current situation, for example, the pressure or temperature generated after the oral cavity cleaning device senses the user's handheld device. The starting or adjusting signal can be an instruction for starting the oral cavity cleaning device, or an instruction for adjusting the oral cavity cleaning device to perform a specific operation, such as adjusting the cleaning mode, cleaning time, vibration frequency, swing amplitude, swing speed, and the like of the oral cavity cleaning device.

[0047] The target driving signal can be understood as a signal for controlling the driving unit to execute a preset operation program, for example, a signal for controlling the motor to rotate according to a random cleaning angle or apply vibration to the cleaning head 102.

[0048] The random cleaning angle can be understood as a randomly generated angle for controlling the oral cleaning of the cleaning head 102, and the random cleaning angle can be one or more types; in one or more embodiments provided in the specification, the random cleaning angle includes a first random cleaning angle, a first pseudo-random cleaning angle, a second random cleaning angle, and a second pseudo-random cleaning angle; wherein the first random cleaning angle or the first pseudo-random cleaning angle is less than 10 degrees, preferably less than 8 degrees, preferably less than 6 degrees, and preferably less than 5 degrees; wherein the second random cleaning angle or the second pseudo-random cleaning angle is greater than or equal to 10 degrees and less than or equal to 60 degrees; the oral cleaning device in the specification can control the motor shaft relative to its reference position to swing left or right at a high speed within a certain small angle range (for example, within 0°-10°) by a random cleaning angle (generated by a random algorithm) during oral cleaning, to achieve a vibration with a changeable frequency; and / or control the motor shaft to generate a swing with a larger angle (for example, >10°, <60°) by a second random angle while maintaining the vibration, to achieve a settable speed random sweep, to achieve flexible oral cleaning, thereby adapting to different actual conditions of the oral cavity to be cared for; and the sweep also maintains the vibration, to achieve a sweep-vibration integration, to provide a better cleaning experience for the user. By flexible and variable sweeping within a certain range, or flexible and variable vibration within a certain range, or flexible and variable sweeping within a certain range superimposed on flexible and variable vibration within a certain range, the random angle cleaning dead angle is achieved, high torque is avoided, the cleaning comfort is improved, and damage to the teeth caused by excessive torque is avoided. Moreover, the vibration frequency of the motor during operation is randomly variable, the working frequency of the motor is avoided from being close to the inherent frequency, the motor resonance phenomenon is effectively avoided, and normal movement of the motor is ensured.

[0049] It should be noted that the first random cleaning angle, the first pseudo-random cleaning angle, the second random cleaning angle, and the second pseudo-random cleaning angle can be set according to actual application scenarios, and the specification does not make specific limitations here.

[0050] The cleaning motion can be understood as a cleaning motion performed by the cleaning head 102 on the oral cavity region to be cleaned, which includes a vibration operation performed by the cleaning head 102 according to a random cleaning angle and / or a sweeping operation performed by the cleaning head 102 according to a random cleaning angle; in one or more embodiments provided in the specification, the vibration operation includes driving the cleaning head 102 to vibrate at a preset vibration frequency range, which includes greater than or equal to 100 Hz and less than or equal to 700 Hz; the sweeping operation includes driving the cleaning head 102 to sweep at a preset sweeping frequency range, which includes greater than or equal to 20 degrees per second and less than or equal to 2000 degrees per second. The oral cavity cleaning device in the specification provides flexible and variable vibration within a certain range to adapt to different oral cavity conditions to be cleaned during oral cavity cleaning. The set vibration range ensures basic cleaning force, and the randomly variable vibration angle can clean more different parts (for example, the motor of the electric toothbrush vibrates at a high frequency, and in a single random variable vibration, it may not be able to clean the parts required by the user to be cleaned, but under the high frequency vibration of -30000 times-40000 times / minute, multiple iterations can clean more different parts), and the cleaning effect is better; and the flexible and variable sweeping within a certain range to adapt to different oral cavity conditions to be cleaned, the cleaning effect is better.

[0051] In one or more embodiments provided in the specification, the target driving signal includes a first driving signal and / or a second driving signal;

[0052] The first driving signal carries a first random cleaning angle or a first pseudo-random cleaning angle;

[0053] The driving unit is further configured to drive the cleaning head 102 to perform a first cleaning motion according to the first random cleaning angle or the first pseudo-random cleaning angle in response to the first driving signal;

[0054] The second driving signal carries a second random cleaning angle or a second pseudo-random cleaning angle;

[0055] The driving unit is further configured to drive the cleaning head 102 to perform a second cleaning motion according to the second random cleaning angle or the second pseudo-random cleaning angle in response to the second driving signal.

[0056] The first cleaning motion can be understood as driving the cleaning head 102 to perform a vibration operation according to the first random cleaning angle or the first pseudo-random cleaning angle;

[0057] The second cleaning motion drives the cleaning head 102 to perform a sweeping operation according to the second random cleaning angle or the second pseudo-random cleaning angle.

[0058] In the above embodiment, the driving unit is controlled by the first driving signal and / or the second driving signal to drive the cleaning head 102 to perform the first cleaning motion and / or the second cleaning motion, so that the oral cleaning device can provide multiple cleaning modes during oral cleaning, avoiding the problem of single cleaning mode and meeting the diversified cleaning needs of users.

[0059] In one or more embodiments provided in the specification, the first driving signal carries a first reference range;

[0060] The driving unit is further configured to drive the cleaning head 102 to perform the first cleaning motion according to the first random cleaning angle or the first pseudo-random cleaning angle within the first reference range in response to the first driving signal.

[0061] The first reference range can be understood as a range corresponding to the execution of the first cleaning motion, and the first reference range can be set according to the actual application scenario. For example, the first reference range can be understood as a range interval of 0 degrees to 10 degrees relative to the reference position of the driving shaft, or a range interval of 0 degrees to 5 degrees relative to the reference position of the driving shaft; the first cleaning motion (i.e., the vibration operation) needs to be performed within the range interval of 0 degrees to 10 degrees or the range interval of 0 degrees to 5 degrees.

[0062] For example, the motor shaft (i.e., the driving shaft) of the electric toothbrush is randomly swung to the left or right at a high speed within a range interval of 0 degrees to 10 degrees (i.e., the first reference range) relative to its reference position, to achieve a vibration with a changeable frequency; the vibration is a reciprocating rotary motion with the axis of the motor shaft as the rotation axis, and after swinging to the left at a high speed by a random angle, it is immediately swung to the right at a high speed by a random angle; the random angle includes a reference range (i.e., the first reference range), such as 5° to the left or right, under the control of the random signal, it is first swung to the left by 5.1°, and then swung to the right by 4.9°; so as to achieve a flexible and variable vibration within a certain range to adapt to different oral cleaning conditions, and the set vibration range ensures the basic cleaning force.

[0063] In one or more embodiments provided in the specification, the second driving signal carries a second reference range;

[0064] The driving unit is further configured to drive the cleaning head 102 to perform the second cleaning motion according to the second random cleaning angle or the second pseudo-random cleaning angle within the second reference range in response to the second driving signal.

[0065] The second reference range can be understood as a range corresponding to the second cleaning motion during execution. The second reference range can be set according to the actual application scenario. For example, the second reference range can be understood as being within a range interval of 10 degrees to 60 degrees relative to the reference position of the driving shaft, or within a range interval of 15 degrees to 65 degrees relative to the reference position of the driving shaft. The first cleaning motion (i.e., the vibration operation) needs to be executed within the range interval of 10 degrees to 60 degrees or within the range interval of 15 degrees to 65 degrees.

[0066] For example, the electric toothbrush controls the motor shaft to generate a larger angle swing (e.g., > 10°, < 60°) with a second random angle while maintaining vibration, which is executed within the range interval of 10 degrees to 60 degrees or within the range interval of 15 degrees to 65 degrees, to achieve a settable speed random sweep, so that the electric toothbrush also maintains vibration when sweeping, achieving sweep-vibration integration.

[0067] In one or more embodiments provided in the specification, the driving unit includes a driving shaft connected to the cleaning head 102.

[0068] The first cleaning motion includes controlling the driving shaft to rotate the first random cleaning angle or the first pseudo-random cleaning angle along a first direction or a second direction with the first axis as the rotation center line, to drive the cleaning head 102 to perform a vibration operation.

[0069] The driving shaft can be understood as a component for driving the cleaning head 102 to perform a cleaning motion. The cleaning head 102 is detachably mounted on the driving shaft. When the driving shaft rotates and / or vibrates, it can drive the cleaning head 102 to perform a sweep operation and / or a vibration operation. For example, the driving shaft can be a motor shaft.

[0070] The reference position of the driving shaft can be understood as the initial position of the driving shaft. The cleaning motion performed by the cleaning head 102 can be performed relative to the reference position. For example, the motor shaft is controlled relative to its reference position to swing a random angle within a certain angle range.

[0071] The first axis can be understood as the center point or center axis of the first cleaning motion. During execution of the first cleaning motion, the driving shaft is controlled to rotate the first random cleaning angle or the first pseudo-random cleaning angle along a first direction or a second direction with the first axis as the rotation center line, to drive the cleaning head 102 to perform a vibration operation.

[0072] The first direction and the second direction can be left-right direction, front-back direction, up-down direction, etc.

[0073] For example, after an electric toothbrush is turned on, it needs to read the reference position of the motor shaft set at the factory and control the motor shaft to swing at high speed to the left or right within a certain small angle range relative to its reference position, so as to achieve a vibration with a changeable frequency. This vibration is a reciprocating rotational motion with the first axis of the motor shaft as the rotation axis, swinging at high speed to the left at a random angle and then immediately swinging at high speed to the right at a random angle.

[0074] In one or more embodiments provided in this specification, the drive unit includes a drive shaft connected to the cleaning head 102;

[0075] The second cleaning motion includes controlling the drive shaft to rotate the second random cleaning angle or the second pseudo-random cleaning angle along the first direction or the second direction with the second axis as the rotation center line relative to the reference position of the drive shaft, so as to drive the cleaning head 102 to perform a sweeping operation.

[0076] The second axis can be understood as the center point or central axis of the second cleaning motion. During the execution of the second cleaning motion, the drive shaft is controlled to rotate around the second axis as the rotation center line along the first direction or the second direction by the second random cleaning angle or the second pseudo-random cleaning angle, so as to drive the cleaning head 102 to perform a sweeping operation.

[0077] For example, after an electric toothbrush is turned on, it needs to read the reference position of the motor shaft set at the factory, control the motor shaft relative to its reference position, and generate a larger angle (e.g., >10°, <60°) to swing left and right. This swing is a reciprocating rotational motion with the second axis of the motor shaft as the rotation axis. After swinging to the left at a high speed at a random angle, it immediately swings to the right at a high speed at a random angle, realizing a random sweeping motion with a set speed. This allows the electric toothbrush to maintain vibration while sweeping, achieving integrated sweeping and vibration.

[0078] It should be noted that after the oral cleaning device completes one full cycle of cleaning, the drive shaft will return to the reference position so that the next cleaning cycle can be started.

[0079] In one or more embodiments provided in this specification, the first axis is parallel to or overlaps with the second axis; or the first axis and / or the second axis is parallel to or overlaps with the axis of the drive shaft, thereby ensuring that the vibration operation and the sweeping operation can be performed in a coordinated manner and avoiding large deviations between the two.

[0080] In one or more embodiments provided in this specification, a control unit is installed in the gripping part 104;

[0081] The control unit is configured to determine a reference position of a drive shaft in the drive unit in response to the obtained start-up or adjustment signal, generate the target drive signal based on the reference position and the random cleaning angle, and send the target drive signal to the drive unit.

[0082] The random cleaning angle is generated by the control unit based on a random angle generation algorithm.

[0083] The random angle generation algorithm can be set according to an actual application scenario, for example, the random angle generation algorithm can be a pseudo-random number generator, a Gaussian distribution random number, or an algorithm written in a programming language.

[0084] In the above example, after the electric toothbrush is turned on, the control unit in the electric toothbrush determines the reference position of the drive shaft in the drive unit, generates a random cleaning angle using the random angle generation algorithm, and then generates a target drive signal based on the reference position and the random cleaning angle, and sends the target drive signal to the motor, thereby controlling the motor to operate; thereby performing oral cleaning operation to meet the user's oral cleaning needs.

[0085] In one or more embodiments provided in the specification, the control unit is further configured to

[0086] receive a reference position setting signal for the drive shaft sent by a device control end or an input end, control the drive unit to stop driving, and the device control end and the oral cleaning device are connected through wireless signals or the input end and the control unit are electrically connected;

[0087] rotate the drive shaft to a target position, receive a reference position confirmation signal for the drive shaft sent by a device control end or an input end, and determine the current position of the drive shaft as the reference position.

[0088] The input end can be understood as an input end for the control unit to input the reference position setting signal, and the input end can be a control button, a touch screen, or the like.

[0089] The reference position setting signal can be understood as a signal indicating that the control unit sets the reference position of the drive shaft; for example, the reference position setting signal can be a reference position reset signal or a reference position update signal.

[0090] The rotating the driving shaft to the target position can be understood as rotating the driving shaft to the target position under the action of an external force, or the driving unit is controlled to rotate the driving shaft to the target position. The target position can be set according to the actual application scene, for example, the target position can be a position at which the cleaning surface of the cleaning head 102 faces the user or the cleaning surface of the cleaning head 102 is on the same plane as the user interaction control 106.

[0091] The reference position confirmation signal can be understood as a signal indicating that the control unit has rotated the reference position of the driving shaft to the target position.

[0092] In one or more embodiments provided in the specification, the reference position of the driving shaft includes a position of the driving shaft in the case that the driving shaft is rotated under the control of an external force so that the cleaning surface of the cleaning head 102 is on the same plane as the user interaction control 106 in the holding portion 104.

[0093] The reference position of the driving shaft includes a position of the driving shaft before it is determined to perform the oral cleaning operation.

[0094] The cleaning surface can be understood as a surface in the cleaning head 102 that contacts the oral cavity region to be cleaned and is used for cleaning the oral cavity region to be cleaned, for example, the cleaning surface can be a bristle surface of a brush head.

[0095] The user interaction control 106 can be understood as a control provided in the oral cleaning device and used for interacting with the user, for example, the user interaction control 106 can be one or more components of a button, a display screen, a touch screen, a sensor, a microphone, a speaker, an indicator light, a camera, etc., without specific limitation here.

[0096] Specifically, the reference position of the driving shaft in the oral cleaning device can be determined in two ways. The first way is to rotate the driving shaft by using an external force, and in the case that the driving shaft is rotated under the control of the external force so that the cleaning surface of the cleaning head 102 is on the same plane as the user interaction control 106 in the holding portion 104, the current position of the driving shaft is determined as the reference position of the driving shaft. The second way is to set the position of the driving shaft when the oral cleaning device is shipped from the factory or the position of the driving shaft after completing a complete periodic cleaning motion as the reference position of the driving shaft. The reference position of the driving shaft is determined in multiple ways, so that the oral cleaning device can better adapt to various situations in the actual scene and improve the applicability.

[0097] In one or more embodiments provided in the specification, the control unit is further configured to receive a position adjustment signal carrying the reference position sent by the device control end, and control the driving unit to perform a position calibration operation on the driving shaft based on the reference position.

[0098] The driving unit is further configured to rotate the driving shaft to the reference position based on the control of the control unit to perform the position calibration operation.

[0099] Specifically, during the oral cleaning operation, the device control end can send a position adjustment signal carrying the reference position to the control unit to adjust the reference position of the driving shaft.

[0100] After receiving the position adjustment signal, the control unit can control the driving unit to perform a position calibration operation on the current position of the driving shaft based on the reference position, and the driving unit can rotate the driving shaft to the reference position under the control of the control unit to perform the position calibration operation, so as to adjust the reference position of the driving shaft to a suitable position during the oral cleaning operation, facilitating the subsequent smooth oral cleaning.

[0101] In one or more embodiments provided in the specification, the control unit is further configured to control the driving unit to perform a position calibration operation on the driving shaft based on the reference position in a case where it is determined that the oral cleaning operation is completed;

[0102] The driving unit is further configured to rotate the driving shaft to the reference position based on the control of the control unit to perform the position calibration operation.

[0103] Specifically, after the oral cleaning operation is completed, the control unit can control the driving unit to return the driving shaft to the reference position for the next time of starting the cleaning movement.

[0104] One or more embodiments of the specification provide an electric toothbrush, comprising:

[0105] The cleaning head 102 has at least a cleaning unit (e.g., a brush head); a holding portion 104 connected with the cleaning portion, and a driving unit (e.g., a motor) at least partially accommodated in the holding portion 104, the driving unit comprising a driving shaft (e.g., a motor shaft) engaged with the cleaning head 102;

[0106] The control component drives the drive shaft of the drive unit to output a cleaning motion using a drive signal, and drives the cleaning unit by the cleaning motion, wherein the cleaning motion includes a first cleaning motion and a second cleaning motion, the first cleaning motion includes that the drive shaft rotates a first random cleaning angle or a first pseudo-random cleaning angle in a first direction or a second direction with a first axis as a rotation center line relative to a reference position of the drive shaft, and the second cleaning motion includes that the drive shaft rotates a second random cleaning angle or a second pseudo-random cleaning angle in the first direction or the second direction with a second axis as a rotation center line relative to the reference position of the drive shaft, and the first random cleaning angle and the second random cleaning angle are different.

[0107] Further, the control component controls the cleaning unit to execute the vibration of the drive unit in the first direction or the second direction to rotate the first random cleaning angle when rotating the second random cleaning angle in the first direction or the second direction with the second axis as the rotation center line.

[0108] One or more embodiments of the present specification provide an oral cleaning device, which includes a holding portion, a drive unit at least partially accommodated in the holding portion, and a cleaning head connected with the drive unit; the holding portion is configured to obtain a starting or adjusting signal, and send a target driving signal carrying a random cleaning angle to the drive unit; the drive unit is configured to drive the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal; and the cleaning head is configured to contact a to-be-cleaned oral cavity area and perform an oral cleaning operation in the to-be-cleaned oral cavity area based on the driving of the drive unit, so as to flexibly perform oral cleaning based on the random cleaning angle, thereby adapting to different actual conditions of the to-be-cared oral cavity and meeting the personalized oral care needs of a user.

[0109] Referring to FIG. 2, FIG. 2 shows a flowchart of a control method according to one embodiment of the present specification, which is applied to a control unit in an oral cleaning device, the oral cleaning device including a holding portion, a drive unit at least partially accommodated in the holding portion, and a cleaning head connected with the drive unit, and the control method specifically includes the following steps.

[0110] Step 202: determining a target driving signal in response to the obtained starting or adjusting signal, wherein the target driving signal carries a random cleaning angle.

[0111] Step 204: sending the target driving signal to the drive unit, so that the drive unit drives the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal.

[0112] For the explanation and description of the above steps, reference can be made to the corresponding or corresponding contents in the above embodiment of the oral cleaning device, which will not be repeated here.

[0113] Referring to FIG. 3, FIG. 3 is a flow chart of another control method according to an embodiment of the present specification, which specifically includes the following steps:

[0114] Step 302: determining a reference position of a driving shaft in the driving unit in response to the acquired start or adjustment signal.

[0115] Step 304: generating the target driving signal based on the reference position and the random cleaning angle, wherein the random cleaning angle is generated by the control unit based on a random angle generation algorithm, and the target driving signal carries the random cleaning angle.

[0116] Step 306: sending the target driving signal to the driving unit, so that the driving unit drives the cleaning head to perform a cleaning motion according to the random cleaning angle by responding to the target driving signal.

[0117] In one or more embodiments provided by the present specification, the target driving signal includes a first driving signal and / or a second driving signal;

[0118] wherein the first driving signal carries a first random cleaning angle or a first pseudo-random cleaning angle, and the first driving signal is used to control the driving unit to drive the cleaning head to perform a first cleaning motion according to the first random cleaning angle or the first pseudo-random cleaning angle,

[0119] wherein the second driving signal carries a second random cleaning angle or a second pseudo-random cleaning angle, and the second driving signal is used to control the driving unit to drive the cleaning head to perform a second cleaning motion according to the second random cleaning angle or the second pseudo-random cleaning angle.

[0120] For example, the above-mentioned steps can be executed as follows: when the control unit of the electric toothbrush (i.e., the oral cleaning device) acquires the start or adjustment signal, the reference position of the motor shaft (i.e., the motor shaft) can be the position at which the bristle surface of the brush head installed on the driving shaft faces the user when it is shipped from the factory, or the position at which the user controls the motor shaft of the electric toothbrush to rotate to the position at which the bristle surface of the brush head installed on the driving shaft faces the user after the electric toothbrush is turned on, and a random cleaning angle is generated based on a random angle generation algorithm; a target driving signal is generated according to the random cleaning angle and the random cleaning angle and is sent to the motor, so that the motor shaft of the electric toothbrush vibrates relative to the reference position at the random cleaning angle or moves at the random sweeping amplitude, thereby driving the brush head to perform an oral cleaning operation and providing flexible sweeping within a certain range to adapt to different oral cleaning conditions, so that the cleaning effect is better.

[0121] It should be noted that the target driving signal includes the first driving signal and / or the second driving signal.

[0122] The first driving signal carries a first random cleaning angle or a first pseudo-random cleaning angle, and the first driving signal is used to control the motor to drive the motor shaft to swing at a small angle range (0°-10°) according to the first random cleaning angle or the first pseudo-random cleaning angle, that is, to swing left or right at a high speed, so as to drive the brush head to vibrate, which can be used to clean the oral cavity.

[0123] The second driving signal carries a second random cleaning angle or a second pseudo-random cleaning angle, and the second driving signal is used to control the motor to drive the motor shaft to swing at a larger angle (for example, >10°, <60°) while keeping vibrating, so as to realize a set-speed random sweeping and keep vibrating while sweeping.

[0124] For the explanation of the above steps, reference can be made to the corresponding or corresponding contents in the above embodiment of the oral cavity cleaning device, which will not be repeated here.

[0125] One or more embodiments of the present specification provide a control method applied to a control unit in an oral cavity cleaning device, the oral cavity cleaning device comprising a holding part, a driving unit at least partially accommodated in the holding part, and a cleaning head connected with the driving unit; the control unit can generate a target driving signal carrying a random cleaning angle in response to an obtained starting or adjusting signal, and send the target driving signal to the driving unit, and the driving unit drives the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal, the cleaning head is used to contact the oral cavity to be cleaned, and performs an oral cavity cleaning operation in the oral cavity to be cleaned based on the driving of the driving unit, which realizes flexible oral cavity cleaning based on the random cleaning angle, so as to adapt to different actual conditions of the oral cavity to be cared for and meet the individual oral care needs of the user.

[0126] The following further describes the control method by taking the application of the control method provided in the present specification in an oral cavity cleaning scene as an example with reference to FIG. 4. FIG. 4 shows a process flow diagram of a control method provided in an embodiment of the present specification, which specifically includes the following steps.

[0127] Step 402: reading a reference position, generating a pseudo-random number to determine a certain area as a random reference position.

[0128] Step 404: obtaining a starting or adjusting signal.

[0129] Step 406: control the motor shaft of the electric toothbrush to rotate to a random reference position, so that the bristle surface of the brush head faces the user.

[0130] Step 408: control the motor shaft of the electric toothbrush to vibrate relative to the random reference position.

[0131] Specifically, the motor shaft is controlled to swing left or right at a high speed within a small angle range (0° to 10°) according to a first random cleaning angle, to realize a vibration with a changeable frequency; the vibration is a reciprocating rotation movement with the axis of the motor shaft as the rotation axis, and swings left at a high speed by a random angle and then swings right at a high speed by a random angle; the random angle includes a reference range, for example, the reference range is 5° left or right, and under the control of a random signal, the motor shaft swings left by 5.1° and then swings right by 4.9°.

[0132] Step 410: control the motor shaft of the electric toothbrush to move relative to the random reference position at a random sweeping amplitude.

[0133] Specifically, the motor shaft is controlled to swing at a larger angle (for example, >10° and <60°) according to a second random cleaning angle while maintaining the vibration, to realize a random sweeping at a settable speed, so that the sweeping and the vibration are integrated.

[0134] Based on the above steps, the control method applied to the electric toothbrush provided in the specification provides flexible and variable vibrations within a certain range to adapt to different oral conditions to be cleaned, and the set vibration range guarantees the basic cleaning force, and the random and variable vibration angle can clean more different parts (the electric toothbrush motor is a high-frequency vibration, and in a single random and variable vibration, the user may not be able to clean the parts to be cleaned, but under the high-frequency vibration of 30,000 to 40,000 times per minute, the more iterations can clean more different parts), and the cleaning effect is better; and the control method provides flexible and variable sweeping within a certain range to adapt to different oral conditions to be cleaned, and the cleaning effect is better.

[0135] The above is a schematic scheme of the control method of the embodiment. It should be noted that the technical scheme of the control method belongs to the same concept as the technical scheme of the oral cleaning device described above, and the details of the technical scheme of the control method that are not described in detail can be referred to the description of the technical scheme of the oral cleaning device.

[0136] FIG. 5 shows a structural block diagram of a computing device 500 according to an embodiment of the specification. The components of the computing device 500 include but are not limited to a memory 510 and a processor 520. The processor 520 is connected to the memory 510 through a bus 530, and a database 550 is used to save data.

[0137] The computing device 500 also includes an access device 540 that enables the computing device 500 to communicate via one or more networks 560. Examples of such networks include a public switched telephone network (PSTN), a local area network (LAN), a wide area network (WAN), a personal area network (PAN), or combinations of such networks, such as the Internet. The access device 540 can include one or more of any type of network interface (for example, a network interface card (NIC)) such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, a Worldwide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, a Near Field Communication (NFC).

[0138] In one embodiment of the present specification, the above-mentioned components of the computing device 500 and other components not shown in FIG. 5 can also be connected to each other, for example, through a bus. It should be understood that the computing device structure block diagram shown in FIG. 5 is only for the purpose of example, and is not a limitation on the scope of the present specification. Other components can be added or replaced as needed by those skilled in the art.

[0139] The computing device 500 can be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (for example, a tablet computer, a personal digital assistant, a laptop computer, a notebook computer, a netbook, etc.), a mobile phone (for example, a smartphone), a wearable computing device (for example, a smartwatch, smart glasses, etc.), or other types of mobile devices, or a stationary computing device such as a desktop computer or a personal computer (PC). The computing device 500 can also be a mobile or stationary server.

[0140] The processor 520 is configured to execute computer-executable instructions, which, when executed by the processor, implement the steps of the above-mentioned control method.

[0141] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the computing device embodiments are basically similar to the control method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the control method embodiments.

[0142] An embodiment of this specification also provides a computer-readable storage medium storing a computer program / instructions that, when executed by a processor, implement the steps of the control method described above.

[0143] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the computer-readable storage medium embodiments are described simply because they are substantially similar to the control method embodiments; relevant parts can be referred to the descriptions of the control method embodiments.

[0144] An embodiment of this specification also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the control method described above.

[0145] The above is an illustrative scheme of a computer program product according to this embodiment. It should be noted that the technical solution of this computer program product and the technical solution of the control method described above belong to the same concept. For details not described in detail in the technical solution of the computer program product, please refer to the description of the technical solution of the control method described above.

[0146] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0147] The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, software distribution medium, etc. It should be noted that the computer readable medium can include appropriate additions or deletions according to the requirements of patent practice, for example, according to the patent practice in some regions, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0148] It should be noted that for the foregoing method embodiments, in order to facilitate description, they are all expressed as a combination of a series of actions, but those skilled in the art should know that the embodiments of the present specification are not limited by the order of the described actions, because according to the embodiments of the present specification, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the embodiments of the present specification.

[0149] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0150] The preferred embodiments of the present specification disclosed above are only used to help explain the present specification. The alternative embodiments do not describe all the details and limit the invention to the specific embodiments described. Obviously, according to the content of the embodiments of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the embodiments of the present specification, so that those skilled in the art can well understand and use the present specification. The present specification is limited only by the claims and their entire scope and equivalents.

Claims

1. An oral cleaning device, characterized by The holding part, the driving unit at least partially contained in the holding part, and the cleaning head connected with the driving unit; The holding part is used for acquiring a starting or adjusting signal and sending a target driving signal to the driving unit, wherein the target driving signal carries a random cleaning angle; The driving unit is used for driving the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target driving signal; The cleaning head is used for contacting a to-be-cleaned oral cavity area and performing an oral cavity cleaning operation in the to-be-cleaned oral cavity area based on the driving of the driving unit.

2. The oral cleaning device according to claim 1, characterized in that, The target driving signal includes a first driving signal and / or a second driving signal; The first driving signal carries a first random cleaning angle or a first pseudo-random cleaning angle; The driving unit is further configured to drive the cleaning head to perform a first cleaning motion according to the first random cleaning angle or the first pseudo-random cleaning angle in response to the first driving signal; The second driving signal carries a second random cleaning angle or a second pseudo-random cleaning angle; The driving unit is further configured to drive the cleaning head to perform a second cleaning motion according to the second random cleaning angle or the second pseudo-random cleaning angle in response to the second driving signal.

3. The oral cleaning device according to claim 2, characterized in that, The first driving signal carries a first reference range; The driving unit is further configured to drive the cleaning head to perform a first cleaning motion according to the first random cleaning angle or the first pseudo-random cleaning angle within the first reference range in response to the first driving signal.

4. The oral cleaning device according to claim 2, characterized in that, The second driving signal carries a second reference range; The driving unit is further configured to drive the cleaning head to perform a second cleaning motion according to the second random cleaning angle or the second pseudo-random cleaning angle within the second reference range in response to the second driving signal.

5. An oral cleaning device according to any of claims 2-4, characterized in that, The driving unit includes a driving shaft connected with the cleaning head; The first cleaning motion includes controlling the driving shaft to rotate the first random cleaning angle or the first pseudo-random cleaning angle around a first axis as a rotation center line in a first direction or a second direction relative to a reference position of the driving shaft, so as to drive the cleaning head to perform a vibration operation.

6. The oral cleaning device according to claim 5, characterized in that The driving unit includes a driving shaft connected with the cleaning head; The second cleaning motion includes controlling the driving shaft to rotate the second random cleaning angle or the second pseudo-random cleaning angle around a second axis as a rotation center line in a first direction or a second direction relative to a reference position of the driving shaft, so as to drive the cleaning head to perform a sweeping operation.

7. An oral cleaning device according to any one of claims 2-4, characterized in that, The first random cleaning angle or the first pseudo-random cleaning angle is less than 10 degrees.

8. An oral cleaning device according to any one of claims 2-4, characterized in that, The second random cleaning angle or the second pseudo-random cleaning angle is greater than or equal to 10 degrees and less than or equal to 60 degrees.

9. The oral cleaning device according to claim 6, characterized in that The first axis is parallel to or overlaps with the second axis; or The first axis and / or the second axis are parallel to or overlap with an axis of the driving shaft.

10. The oral cleaning device according to claim 1, characterized in that, A control unit is installed in the holding part; The control unit is configured to determine a reference position of a drive shaft in the drive unit in response to the obtained start or adjustment signal, generate the target drive signal based on the reference position and the random cleaning angle, and send the target drive signal to the drive unit. The random cleaning angle is generated by the control unit based on a random angle generation algorithm.

11. The oral cleaning device according to claim 10, characterized in that The control unit is further configured to receive a reference position setting signal for the drive shaft sent by a device control end or an input end, control the drive unit to stop driving, and the device control end is connected to the oral cleaning device through a wireless signal or the input end is electrically connected to the control unit; rotate the drive shaft to a target position, receive a reference position confirmation signal for the drive shaft sent by a device control end or an input end, and determine the current position of the drive shaft as the reference position.

12. The oral cleaning device according to claim 10, characterized in that, The reference position of the drive shaft includes a position of the drive shaft in the case that the cleaning surface of the cleaning head is in the same plane as the user interaction control in the holding part under the control of external force. The reference position of the drive shaft includes a position of the drive shaft before determining to perform the oral cleaning operation.

13. The oral cleaning device according to claim 10, characterized in that, The control unit is further configured to receive a position adjustment signal carrying the reference position sent by a device control end, and control the drive unit to perform a position calibration operation on the drive shaft based on the reference position. The drive unit is further configured to rotate the drive shaft to the reference position based on the control of the control unit to perform the position calibration operation.

14. The oral cleaning device of claim 10, wherein, The control unit is further configured to control the drive unit to perform a position calibration operation on the drive shaft based on the reference position when it is determined that the oral cleaning operation is completed. The drive unit is further configured to rotate the drive shaft to the reference position based on the control of the control unit to perform the position calibration operation.

15. The oral cleaning device according to claim 6, characterized in that, The vibration operation includes driving the cleaning head to vibrate at a preset vibration frequency range, and the preset vibration frequency range includes greater than or equal to 100 Hz and less than or equal to 700 Hz. The sweeping operation includes driving the cleaning head to sweep at a preset sweeping frequency range, and the preset sweeping frequency range includes greater than or equal to 20 degrees per second and less than or equal to 2000 degrees per second.

16. The oral cleaning device of claim 1, wherein, The oral cleaning device is an electric toothbrush, and the cleaning head is a cleaning brush head.

17. A control method characterized by, A control unit applied to an oral cleaning device, the oral cleaning device including a holding part, a drive unit at least partially accommodated in the holding part, and a cleaning head connected to the drive unit, comprising: determine a target drive signal in response to an obtained start or adjustment signal, wherein the target drive signal carries a random cleaning angle; send the target drive signal to the drive unit, so that the drive unit drives the cleaning head to perform a cleaning motion according to the random cleaning angle in response to the target drive signal.

18. The control method according to claim 17, characterized by, The response to the obtained start or adjustment signal to determine the target drive signal further includes: in response to the acquired start-up or adjustment signal, determining a reference position of a drive shaft in the drive unit; generating the target drive signal based on the reference position and the random cleaning angle, wherein the random cleaning angle is generated by the control unit based on a random angle generation algorithm.

19. The control method according to claim 17 or 18, characterized by, the target drive signal comprises a first drive signal and / or a second drive signal, the first drive signal carries a first random cleaning angle or a first pseudo-random cleaning angle, the first drive signal is used to control the drive unit to drive the cleaning head to perform a first cleaning motion according to the first random cleaning angle or the first pseudo-random cleaning angle, the second drive signal carries a second random cleaning angle or a second pseudo-random cleaning angle, the second drive signal is used to control the drive unit to drive the cleaning head to perform a second cleaning motion according to the second random cleaning angle or the second pseudo-random cleaning angle.

20. A computing device, comprising: comprise: a memory and a processor; the memory is used to store computer programs / instructions, and the processor is used to execute the computer programs / instructions, which realize the steps of the control method of any one of claims 17 to 19 when executed by the processor.

21. A computer-readable storage medium, characterized in that, which store computer programs / instructions, which realize the steps of the control method of any one of claims 17 to 19 when executed by the processor.

22. A computer program product, characterised in that, comprise computer programs / instructions, which realize the steps of the control method of any one of claims 17 to 19 when executed by the processor.

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