Lens cleaning method and system and vehicle

Abstract

The invention discloses a lens cleaning method and system and a vehicle, and belongs to the technical field of intelligent cleaning. The method comprises the following steps: controlling a plurality of ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to a smudginess type according to the smudginess type under the condition that the smudginess exists on the surface of the lens so as to clean the lens. According to the embodiment of the invention, the plurality of ultrasonic transducers are arranged on the surface of the lens, the ultrasonic waves are generated through the plurality of ultrasonic transducers, so that the dirt on the surface of the lens is subjected to alternating mechanical force, and the binding force between the dirt and the surface of the lens is gradually weakened under high-frequency vibration, so that the dirt is loosened and falls off; and in consideration of the difference of different types of smudginess in physical characteristics, the vibration mode can be adjusted according to the type of the smudginess, so that the cleaning effect of the lens is improved.

Description

Technical Field

[0001] The present application belongs to the field of intelligent cleaning technology, and in particular relates to a lens cleaning method, system and vehicle. Background Art

[0002] With the continuous advancement of automotive technology, sensors such as onboard cameras and radar are increasingly being used in driver assistance systems. These sensors' lenses, such as lenses and protective covers, are exposed to the vehicle's exterior and are susceptible to contaminants such as dust, dirt, rain, and dead insects, which can affect their proper function.

[0003] In the related art, the lens can be cleaned by using the vehicle's built-in cleaning system by spraying washing liquid and high-pressure air. However, this method has limited cleaning capabilities and is less effective when encountering certain types of dirt, such as ice and mud. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a lens cleaning method, system and vehicle to improve the cleaning effect of the lens.

[0005] In a first aspect, the present application provides a method for cleaning a lens, wherein a plurality of ultrasonic transducers are provided on the surface of the lens, the method comprising:

[0006] When dirt is detected on the lens surface, the plurality of ultrasonic transducers are controlled to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens.

[0007] According to the lens cleaning method of the present application, upon identifying the presence of dirt on the lens surface, the lens is cleaned by controlling the multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type according to the dirt type. In this embodiment of the application, multiple ultrasonic transducers are arranged on the lens surface. The ultrasonic waves generated by the multiple ultrasonic transducers are subjected to alternating mechanical forces on the dirt on the lens surface. The binding force between the dirt and the lens surface gradually weakens under high-frequency vibration, causing the dirt to loosen and fall off. Furthermore, considering the differences in physical properties of different types of dirt, the vibration mode can be adjusted according to the dirt type, thereby improving the lens cleaning effect.

[0008] According to one embodiment of the present application, when the dirt type is the first target type, the vibration mode includes the same vibration direction of the multiple ultrasonic transducers, and different vibration frequencies of at least some of the multiple ultrasonic transducers.

[0009] In this embodiment, by controlling the vibration directions of multiple ultrasonic transducers to be the same, the concentration and synergy of vibration energy can be utilized to enable the ultrasonic waves to cover the lens surface more evenly, reducing cleaning dead angles, and at least some of the ultrasonic transducers have different vibration frequencies, which can generate vibrations of multiple frequencies, and can cause some specific types of dirt such as liquid dirt to be quickly atomized, further improving the cleaning effect.

[0010] According to an embodiment of the present application, when the dirt type is the second target type, the vibration mode includes the same vibration direction of the multiple ultrasonic transducers and the same vibration frequency of the multiple ultrasonic transducers.

[0011] In this embodiment, by controlling the vibration directions of multiple ultrasonic transducers to be the same, the concentration and synergistic effect of vibration energy can be utilized to make the vibration cover the lens surface more evenly, reducing cleaning dead angles, and the vibration frequencies of multiple ultrasonic transducers are the same, which can form a stable vibration field, so that more adherent or tough dirt can be fully loosened and removed under the same frequency excitation, further improving the cleaning effect.

[0012] According to one embodiment of the present application, controlling the plurality of ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens includes:

[0013] generating a target control signal corresponding to the dirt type;

[0014] The plurality of ultrasonic transducers are controlled according to the target control signal to generate ultrasonic waves to clean the lens.

[0015] In this embodiment, by generating a corresponding target control signal according to the type of dirt and controlling the ultrasonic transducer according to the target control signal, the vibration parameters of the ultrasonic transducer are adjusted, so that the vibration mode of the ultrasonic transducer corresponds to the type of dirt, thereby improving the cleaning efficiency.

[0016] According to an embodiment of the present application, when the dirt type is the first target type, the target control signal is a first control signal; the first control signal includes a plurality of different control signals, and different control signals correspond to controlling different ultrasonic transducers.

[0017] In this embodiment, different ultrasonic transducers are controlled by a plurality of different control signals, so that each ultrasonic transducer can be optimized to vibrate separately, thereby generating a desired vibration mode to cope with the cleaning of the first target type of dirt and improve the cleaning effect.

[0018] According to one embodiment of the present application, controlling the plurality of ultrasonic transducers to generate ultrasonic waves to clean the lens according to the target control signal includes:

[0019] Different ultrasonic transducers are controlled to generate ultrasonic waves respectively by using a plurality of different control signals of the first control signal in a preset time sequence, so that at least part of the ultrasonic transducers generate ultrasonic waves alternately.

[0020] In this embodiment, by making at least some of the ultrasonic transducers alternately generate ultrasonic waves, the vibration energy generated by different ultrasonic transducers is complementary and coordinated in time and space, which not only improves the cleaning effect, but also reduces the continuous working time of each ultrasonic transducer and increases the service life of the ultrasonic transducer.

[0021] According to an embodiment of the present application, when the dirt type is a second target type, the target control signal is a second control signal; and the second control signal includes a control signal.

[0022] In this embodiment, a control signal is used to coordinate the vibrations of multiple ultrasonic transducers, so that each ultrasonic transducer operates with the same vibration parameters, forming a highly coordinated vibration field, thereby improving the cleaning effect on the second target type of dirt.

[0023] According to one embodiment of the present application, before controlling the plurality of ultrasonic transducers to generate ultrasonic waves according to the target control signal, the method includes:

[0024] Generate circuit on / off signal;

[0025] The circuit on / off between the plurality of ultrasonic transducers is controlled according to the circuit on / off signal, so that the plurality of ultrasonic transducers are connected in parallel or in series.

[0026] In this embodiment, multiple ultrasonic transducers are connected in parallel or in series through circuit on / off signals, and the working mode of the ultrasonic transducer can be flexibly adjusted according to different dirt types and cleaning requirements to improve the cleaning effect on different dirt.

[0027] According to one embodiment of the present application, at least some of the plurality of ultrasonic transducers are arranged on the outer surface of the lens, and at least some of the ultrasonic transducers are arranged on the inner surface of the lens.

[0028] In this embodiment, the ultrasonic transducer on the outer surface of the lens can act on the area where the lens contacts the outside world, thereby quickly and effectively removing external contaminants, while the ultrasonic transducer on the inner surface can assist in cleaning the inside of the lens, acting together from both the inside and outside directions to form a more comprehensive cleaning effect.

[0029] According to one embodiment of the present application, the number of ultrasonic transducers is two.

[0030] In this embodiment, two ultrasonic transducers are provided to complement and cooperate with each other, thereby reducing cleaning blind spots. In addition, the configuration of the two ultrasonic transducers is relatively simple, which reduces the complexity and cost of the system.

[0031] In a second aspect, the present application provides a lens cleaning device, wherein a plurality of ultrasonic transducers are provided on the surface of the lens, and the device comprises:

[0032] The control module is used to control the plurality of ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens when dirt is detected on the lens surface.

[0033] According to the lens cleaning device of the present application, upon identifying the presence of dirt on the lens surface, the device controls multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens. In this embodiment of the present application, multiple ultrasonic transducers are arranged on the lens surface. The ultrasonic waves generated by the multiple ultrasonic transducers subject the dirt on the lens surface to alternating mechanical forces. The binding force between the dirt and the lens surface gradually weakens under high-frequency vibration, causing the dirt to loosen and fall off. Furthermore, considering the differences in physical properties between different types of dirt, the vibration mode can be adjusted according to the dirt type, thereby improving the lens cleaning effect.

[0034] In a third aspect, the present application provides a lens cleaning system, comprising: a plurality of ultrasonic transducers and a controller disposed on a lens surface;

[0035] The controller is used to execute the lens cleaning method as described in the first aspect above.

[0036] In a fourth aspect, the present application provides an electronic device comprising a processor, wherein the processor is connected to a memory, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the lens cleaning method described in the first aspect above is implemented.

[0037] In a fifth aspect, the present application provides a lens system, comprising a lens, and a lens cleaning system as described in the third aspect or an electronic device as described in the fourth aspect.

[0038] In a sixth aspect, the present application provides a vehicle lamp comprising the lens system as described in the fifth aspect above.

[0039] In a seventh aspect, the present application provides a vehicle, comprising the lens cleaning system as described in the third aspect, the electronic device as described in the fourth aspect, the lens system as described in the fifth aspect, or the headlight as described in the sixth aspect.

[0040] In an eighth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the lens cleaning method as described in the first aspect above.

[0041] In a ninth aspect, the present application provides a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the lens cleaning method as described in the first aspect above.

[0042] In a tenth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the lens cleaning method as described in the first aspect above.

[0043] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0044] According to the lens cleaning method of the present application, upon identifying the presence of dirt on the lens surface, the lens is cleaned by controlling the multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type according to the dirt type. In this embodiment of the application, multiple ultrasonic transducers are arranged on the lens surface. The ultrasonic waves generated by the multiple ultrasonic transducers are subjected to alternating mechanical forces on the dirt on the lens surface. The binding force between the dirt and the lens surface gradually weakens under high-frequency vibration, causing the dirt to loosen and fall off. Furthermore, considering the differences in physical properties of different types of dirt, the vibration mode can be adjusted according to the dirt type, thereby improving the lens cleaning effect.

[0045] Furthermore, in some embodiments, by controlling the vibration directions of multiple ultrasonic transducers to be the same, the concentration and synergy of vibration energy can be utilized to enable the ultrasonic waves to cover the lens surface more evenly, reducing cleaning dead corners, and at least some of the ultrasonic transducers have different vibration frequencies, which can generate vibrations of multiple frequencies, allowing some specific types of dirt such as liquid dirt to be quickly atomized, further improving the cleaning effect.

[0046] Furthermore, in some embodiments, by controlling the vibration directions of multiple ultrasonic transducers to be the same, the concentration and synergy of vibration energy can be utilized to make the vibration cover the lens surface more evenly, reducing cleaning dead corners, and the vibration frequencies of multiple ultrasonic transducers are the same, which can form a stable vibration field, so that more adherent or tough dirt can be fully loosened and removed under the same frequency excitation, further improving the cleaning effect.

[0047] Furthermore, in some embodiments, by generating a corresponding target control signal according to the type of dirt and controlling the ultrasonic transducer according to the target control signal, the vibration parameters of the ultrasonic transducer are adjusted, so that the vibration mode of the ultrasonic transducer corresponds to the type of dirt, thereby improving the cleaning efficiency.

[0048] Furthermore, in some embodiments, different ultrasonic transducers are controlled separately by a plurality of different control signals, so that each ultrasonic transducer can be optimized to vibrate separately, thereby generating the required vibration mode to cope with the cleaning of the first target type of dirt and improve the cleaning effect.

[0049] Furthermore, in some embodiments, by causing at least some of the ultrasonic transducers to vibrate alternately, the vibration energies generated by different ultrasonic transducers are complementary and coordinated in time and space, which not only improves the cleaning effect, but also reduces the continuous working time of each ultrasonic transducer and increases the service life of the ultrasonic transducer.

[0050] Furthermore, in some embodiments, a control signal is used to coordinate the vibrations of multiple ultrasonic transducers so that each ultrasonic transducer operates with the same vibration parameters, forming a highly coordinated vibration field, thereby improving the cleaning effect on the second target type of dirt.

[0051] Furthermore, in some embodiments, multiple ultrasonic transducers are connected in parallel or in series through circuit on / off signals, and the working mode of the ultrasonic transducer can be flexibly adjusted according to different dirt types and cleaning requirements to improve the cleaning effect on different dirt.

[0052] Furthermore, in some embodiments, the ultrasonic transducer on the outer surface of the lens can act on the area where the lens contacts the outside world, thereby quickly and effectively removing external contaminants, while the ultrasonic transducer on the inner surface can assist in cleaning the inside of the lens, acting together from both the inside and outside directions to form a more comprehensive cleaning effect.

[0053] Furthermore, in some embodiments, by providing two ultrasonic transducers, they can complement and cooperate with each other, thereby reducing cleaning blind spots, and the configuration of the two ultrasonic transducers is relatively simple, reducing the complexity and cost of the system.

[0054] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0056] Figure 1 1 is a flow chart of a lens cleaning method provided in an embodiment of the present application;

[0057] Figure 2 is a schematic diagram of the cross-sectional structure of the ultrasonic transducer and the lens surface provided in an embodiment of the present application;

[0058] Figure 3 1 is a schematic diagram of a radius-frequency-acceleration relationship curve provided in an embodiment of the present application;

[0059] Figure 4 Schematic diagram of the resonant frequency-impedance relationship of ultrasonic transducer A provided in an embodiment of the present application;

[0060] Figure 5 Schematic diagram of the resonant frequency-impedance relationship of ultrasonic transducer B provided in an embodiment of the present application;

[0061] Figure 6 is a schematic diagram of an embodiment of the present application in which the first control signal is two different PWM signals;

[0062] Figure 7 Schematic diagram of the voltage excitation sequence of ultrasonic transducer A provided in an embodiment of the present application;

[0063] Figure 8 Schematic diagram of the voltage excitation sequence of ultrasonic transducer B provided in an embodiment of the present application;

[0064] Figure 9 is a schematic diagram of an embodiment of the present application in which the second control signal is a PWM signal;

[0065] Figure 10 Schematic diagram of the voltage excitation sequence of ultrasonic transducer A and ultrasonic transducer B provided in an embodiment of the present application;

[0066] Figure 111 is a circuit diagram of an ultrasonic transducer A and an ultrasonic transducer B connected in series, provided in an embodiment of the present application;

[0067] Figure 12 1 is a circuit diagram of ultrasonic transducer A and ultrasonic transducer B connected in parallel, provided in an embodiment of the present application;

[0068] Figure 13 is a schematic diagram of a scenario example provided in an embodiment of the present application;

[0069] Figure 14 Schematic diagram of the structure of a lens cleaning device provided in an embodiment of the present application;

[0070] Figure 15 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0072] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0073] The lens cleaning method, system and vehicle provided by the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0074] The lens cleaning method may be applied to a terminal, and may be specifically executed by hardware or software in the terminal.

[0075] Optionally, the terminal includes, but is not limited to, a portable communication device such as a mobile phone or tablet computer having a touch-sensitive surface (e.g., a touch screen display and / or a touchpad). It should also be understood that in some embodiments, the terminal may not be a portable communication device, but rather a desktop computer having a touch-sensitive surface (e.g., a touch screen display and / or a touchpad). In some embodiments, the terminal may also be an optical receiver equipped with a processor, an optical fiber switch, or the like.

[0076] However, it should be understood that the terminal may include one or more other physical user interface devices, such as a physical keyboard, mouse, and joystick.

[0077] The lens cleaning methods provided in the embodiments of the present application can be applied to various fields. For example, in the automotive field, whether it is a traditional fuel vehicle, a new energy vehicle, or an unmanned vehicle, they may include sensors such as onboard cameras and radars. The lens cleaning methods provided in the embodiments of the present application can be applied to cleaning lenses in vehicles. Of course, the lens cleaning methods provided in the embodiments of the present application can also be applied to other fields, such as drones, robotic vision systems, security monitoring equipment, and other fields, and the embodiments of the present application are not limited to this.

[0078] The lens cleaning method provided in the embodiments of the present application may be executed by an electronic device or a functional module or functional entity in the electronic device that can implement the lens cleaning method. The electronic devices mentioned in the embodiments of the present application may include but are not limited to servers, ECUs (Electronic Control Units), MCUs (Microcontroller Units) or other controllers, etc. The lens cleaning method provided in the embodiments of the present application is described below using an electronic device as an example of the executing entity.

[0079] like Figure 1 As shown, the lens cleaning method includes: step 110.

[0080] Step 110 : When dirt is detected on the lens surface, multiple ultrasonic transducers are controlled to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens.

[0081] In the embodiments of the present application, a lens can be an optical element capable of converging, diverging, or redirecting light or electromagnetic waves, such as a camera lens or radar lens. A lens can also be a component with isolation or protection functions, such as a camera cover or radar cover. Of course, a lens can also be a lampshade for various lamps, such as a transparent housing or lampshade for a car light. The embodiments of the present application do not limit the lens.

[0082] In the embodiments of the present application, a transducer is an electronic component that converts one form of energy into another. An ultrasonic transducer is a device that converts electrical energy into ultrasonic mechanical energy. The ultrasonic transducer can be placed on the surface of a lens. Electric energy drives the ultrasonic transducer to vibrate, which in turn drives the lens to vibrate. This causes the dirt on the lens surface to be subjected to alternating mechanical forces. The binding force between the dirt and the lens surface gradually weakens under high-frequency vibration, causing it to loosen and fall off. Multiple ultrasonic transducers can be placed on the lens surface to reduce blind spots and achieve better cleaning results.

[0083] In some embodiments, multiple ultrasonic transducers can be positioned anywhere on the lens surface. For example, multiple ultrasonic transducers can be positioned on the inner or outer surface of the lens, or at least some of the ultrasonic transducers can be positioned on the outer and inner surfaces of the lens. The ultrasonic transducers on the outer surface of the lens can act on the area of the lens that contacts the outside world, quickly and effectively removing external contaminants. The ultrasonic transducers on the inner surface can assist in cleaning the interior of the lens, working together from both the inside and outside to achieve a more comprehensive cleaning effect.

[0084] In some embodiments, the number of ultrasonic transducers is two.

[0085] In one example, if Figure 2 As shown, two ultrasonic transducers are arranged on the outer surface and inner surface of the lens, respectively. Transducer A 30 is arranged on the outer surface of lens 1, and transducer B 40 is arranged on the inner surface of lens 1. Transducer A 30 and transducer B 40 are bonded and coupled to the inner and outer surfaces of lens 1 by adhesive material 2 (such as glue). Transducer A 30 and transducer B 40 can vibrate along the radial direction of lens 1 or along the direction perpendicular to the mirror surface. The structure of the lens may include concave, convex, flat, etc., which is not limited in the embodiments of the present application.

[0086] In this embodiment, the A transducer 30 and the B transducer 40 may have different corresponding relationships between resonant frequency and impedance. Figure 3 、 Figure 4 and Figure 5 As shown, in Figure 3 In the figure, curve a is the curve of A transducer 30. Figure 4 At the resonance frequency point A, the relationship curve of the lens surface acceleration driven by vibration and the change of radius size; Curve b is the relationship curve of the B transducer at Figure 5 At the resonance frequency point B, the relationship curve of the acceleration of the lens surface driven by vibration and the change of the radius size; Curve c is the relationship between the A transducer 30 and the B transducer at Figure 4 、 Figure 5At the same resonant frequency point C in the middle, the relationship curve between the acceleration of the lens surface and the radius size when the lens 1 is driven by vibration at the same time.

[0087] like Figure 3 As shown, the B transducer is Figure 5 When vibrating at the B resonance frequency, the resulting b acceleration curve exhibits a significant dead zone, creating blind spots in cleaning and causing contaminants to remain in certain areas of the lens. Therefore, transducer A 30 can be vibrated at the A resonance point to generate the a acceleration curve. Acceleration a can be used to fill in the gaps in the areas of contaminants left by acceleration b, achieving lens cleaning. Therefore, by providing two ultrasonic transducers, they complement and collaborate, reducing blind spots in cleaning. Furthermore, the relatively simple configuration of the two ultrasonic transducers reduces system complexity and cost.

[0088] In some embodiments, any method can be used to identify the presence of dirt on the lens surface and determine the type of dirt. For example, an optical sensor can be used to detect changes in the reflectivity of the lens. When the reflectivity exceeds a preset threshold, it can be determined that dirt is present on the lens surface. If the reflectivity increases slightly and the ambient humidity is low, the type of dirt can be determined to be dust, water droplets, etc. If the reflectivity increases significantly, the type of dirt can be determined to be ice, mud, sand, etc. Alternatively, an image of the lens surface can be obtained, and then image recognition technology can be used to identify the presence of dirt on the lens surface and determine the type of dirt, although this embodiment of the present application is not limited to this.

[0089] In an embodiment of the present application, after determining the type of dirt, multiple ultrasonic transducers can be controlled to perform cleaning in a corresponding vibration mode according to the characteristics of different dirt types. The vibration mode of the ultrasonic transducer can be achieved through vibration parameters such as vibration frequency, amplitude, and vibration direction. For example, for dirt with poor adhesion such as dust and water droplets, a lower frequency and smaller amplitude vibration can be used to reduce damage to the lens surface while cleaning the lens; for dirt with strong adhesion such as ice and mud, a high frequency and large amplitude vibration can be used to improve the cleaning effect.

[0090] In some embodiments, the correspondence between the dirt type and the vibration mode can be pre-established and stored in a local or cloud database. After the dirt type is determined, the corresponding vibration mode can be queried from the correspondence according to the dirt type.

[0091] According to the lens cleaning method of the present application, upon identifying the presence of dirt on the lens surface, multiple ultrasonic transducers are controlled to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens. In the embodiment of the present application, multiple ultrasonic transducers are arranged on the lens surface. The ultrasonic waves generated by the multiple ultrasonic transducers are subjected to alternating mechanical forces on the dirt on the lens surface. The binding force between the dirt and the lens surface gradually weakens under high-frequency vibration, causing the dirt to loosen and fall off. Furthermore, considering the differences in physical properties of different types of dirt, the vibration mode can be adjusted according to the dirt type, thereby improving the lens cleaning effect.

[0092] In some embodiments, when the dirt type is the first target type, the vibration mode includes the multiple ultrasonic transducers vibrating in the same direction, and at least some of the multiple ultrasonic transducers vibrating at different frequencies.

[0093] In this embodiment, the first target type of dirt may be contaminants with low adhesion, such as dust, water droplets, water mist, etc. The first target type of dirt is generally loose and relatively easy to remove, but may be widely and unevenly distributed on the lens. Therefore, a vibration method that can efficiently and evenly clean the lens surface is required.

[0094] In this embodiment, for the first target type of dirt, the vibration parameters such as the vibration frequency and vibration direction of each ultrasonic transducer can be controlled by a pre-set algorithm, so that the vibration directions of multiple ultrasonic transducers are the same, and the vibration frequencies of at least some of the multiple ultrasonic transducers are different.

[0095] When the vibration directions of multiple ultrasonic transducers are the same, a unified vibration field can be formed, so that the lens surface is subjected to consistent and concentrated vibration, reducing cleaning dead corners caused by uneven vibration.

[0096] Because the first target type of dirt may be unevenly distributed and may exist in various forms (such as a mixture of water droplets and dust), by setting the vibration frequencies of at least some of the multiple ultrasonic transducers to be different, a variety of vibration modes can be generated to better adapt to the different forms and distributions of dirt. For example, high-frequency vibration can more effectively remove fine dust particles, while low-frequency vibration can better handle larger water droplets, causing them to fall off and atomize. The different frequencies of vibration work together to more comprehensively clean the lens surface and improve cleaning efficiency.

[0097] In this embodiment, by controlling the vibration directions of multiple ultrasonic transducers to be the same, the concentration and synergy of vibration energy can be utilized to make the vibration cover the lens surface more evenly, reducing cleaning dead angles, and at least some of the ultrasonic transducers have different vibration frequencies, which can create a multi-frequency resonance effect, allowing some specific types of dirt such as liquid dirt to be quickly atomized, further improving the cleaning effect.

[0098] In some embodiments, when the dirt type is the second target type, the vibration mode includes the multiple ultrasonic transducers vibrating in the same direction and at the same frequency.

[0099] The second target type of dirt may be dirt with strong adhesion, such as ice, mud, sand, etc. The second target type of dirt is usually difficult to remove and therefore requires a special vibration method.

[0100] In this embodiment, for the second target type of dirt, the vibration parameters such as the vibration frequency and vibration direction of each ultrasonic transducer can be controlled by a pre-set algorithm, so that the vibration directions of multiple ultrasonic transducers are the same and the vibration frequencies of multiple ultrasonic transducers are the same.

[0101] When multiple ultrasonic transducers vibrate in the same direction, a unified vibration field can be formed, so that the lens surface is subjected to consistent and concentrated vibration, reducing the cleaning dead angle caused by uneven vibration.

[0102] When multiple ultrasonic transducers vibrate at the same frequency, the vibration energy can form a stable resonance field on the lens surface. This resonance field can generate greater mechanical stress, thereby more effectively breaking ice or loosening mud and sand.

[0103] In this embodiment, by controlling the vibration directions of multiple ultrasonic transducers to be the same, the concentration and synergistic effect of vibration energy can be utilized to make the vibration cover the lens surface more evenly, reducing cleaning dead angles, and the vibration frequencies of multiple ultrasonic transducers are the same, which can form a stable vibration field, so that more adherent or tough dirt can be fully loosened and removed under the same frequency excitation, further improving the cleaning effect.

[0104] In some embodiments, controlling multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens includes:

[0105] Generate a target control signal corresponding to the type of dirt;

[0106] The plurality of ultrasonic transducers are controlled according to a target control signal to generate ultrasonic waves to clean the lens.

[0107] In this embodiment, a target control signal can be generated based on pre-set algorithms and parameters derived from research on different types of dirt. These algorithms and parameters can be used to match the vibration pattern of the ultrasonic transducer to the type of dirt under the control of the target control signal. For example, when ice is detected on the lens surface, a specific control signal is generated based on the physical properties of the ice (such as hardness and adhesion). This control signal can control the ultrasonic transducer to vibrate at a specific frequency, amplitude, and vibration direction, thereby removing the ice.

[0108] In some embodiments, the target control signal can be a PWM (Pulse Width Modulation) signal, and the vibration mode of the ultrasonic transducer can be adjusted by parameters such as the frequency and duty cycle of the PWM signal. For example, for dirt with weak adhesion, such as dust, a low-frequency, low-duty-cycle PWM signal can be generated, which can cause the ultrasonic transducer to generate ultrasonic waves in a low-frequency vibration mode; while for dirt with strong adhesion, such as ice, a high-frequency, high-duty-cycle PWM signal can be generated, which can cause the ultrasonic transducer to generate ultrasonic waves in a high-frequency vibration mode. The generated PWM signal is amplified by an amplifier, which converts the PWM signal into sufficient power to enable the ultrasonic transducer to generate the required vibration. After receiving the amplified PWM signal, the ultrasonic transducer vibrates according to the frequency and duty cycle of the PWM signal. Among them, a high-frequency PWM signal can cause the ultrasonic transducer to generate high-frequency vibration, while a low-frequency PWM signal causes the ultrasonic transducer to generate low-frequency vibration.

[0109] In some embodiments, the low-frequency vibration and the high-frequency vibration of the ultrasonic transducer may be vibrations within the ultrasonic frequency range, that is, the vibration frequency of the ultrasonic transducer is greater than 20 KHz.

[0110] If the vibration frequency is lower than 20KHz, it will produce audible noise to the human ear, while if the vibration frequency is too high, it will increase energy loss. Therefore, the vibration frequency of the ultrasonic transducer can be controlled within the range of 20KHz-200KHz, which can improve energy utilization and reduce noise generation.

[0111] In this embodiment, by generating a corresponding target control signal according to the type of dirt and controlling the ultrasonic transducer according to the target control signal, the vibration parameters of the ultrasonic transducer are adjusted, so that the vibration mode of the ultrasonic transducer corresponds to the type of dirt, thereby improving the cleaning efficiency.

[0112] In some embodiments, when the dirt type is the first target type, the target control signal is a first control signal; the first control signal includes a plurality of different control signals, and different control signals correspond to controlling different ultrasonic transducers.

[0113] In this embodiment, when the dirt type is the first target type, multiple different control signals can be generated to control different ultrasonic transducers respectively. For example, multiple PWM signals can be generated, and at least some of the PWM signals have different frequencies, so that the vibration frequencies of at least some of the ultrasonic transducers are different. For example, a PWM signal with a frequency of 30 kHz and a duty cycle of 30% is used to clean fine dust particles, a PWM signal with a frequency of 50 kHz and a duty cycle of 50% is used to clean dirt in the form of a mixture of dust and water droplets, and a PWM signal with a frequency of 80 kHz and a duty cycle of 70% is used to clean water droplets.

[0114] In this embodiment, different ultrasonic transducers are controlled by a plurality of different control signals, so that each ultrasonic transducer can be optimized to vibrate separately, thereby generating a desired vibration mode to cope with the cleaning of the first target type of dirt and improve the cleaning effect.

[0115] In some embodiments, controlling the vibration of multiple ultrasonic transducers according to a target control signal includes:

[0116] According to a preset time sequence, different ultrasonic transducers are controlled by a plurality of different control signals of the first control signal to generate ultrasonic waves, so that at least part of the ultrasonic transducers generate ultrasonic waves alternately.

[0117] In this embodiment, if Figure 6 As shown, two different PWM signals can be generated, B transducer 40 according to Figure 6 As shown, the PWM control signal of the B transducer performs intermittent vibration. The B transducer 40 stops working for the same time as the A transducer 30 works, and the A transducer 30 stops working for the same time as the B transducer 40 works.

[0118] The generated PWM signal is amplified by the amplifier, which converts the PWM signal into sufficient power to enable the ultrasonic transducer to generate the required vibration. After receiving the amplified PWM signal, the ultrasonic transducer vibrates according to the frequency and duty cycle of the PWM signal. Figure 7 and Figure 8 As shown, Figure 7 Schematic diagram of the voltage excitation sequence of the PWM signal corresponding to transducer A 30 after amplification. Figure 8 Schematic diagram of the voltage excitation sequence of the amplified PWM signal corresponding to the B transducer 40. After the PWM signal is amplified, it is mapped into voltage (Volts), and the corresponding voltage is output to control the operation of the ultrasonic transducer.

[0119] In this embodiment, by making at least some of the ultrasonic transducers alternately generate ultrasonic waves, the vibration energy generated by different ultrasonic transducers is complementary and coordinated in time and space, which not only improves the cleaning effect, but also reduces the continuous working time of each ultrasonic transducer and increases the service life of the ultrasonic transducer.

[0120] In some embodiments, when the dirt type is a second target type, the target control signal is a second control signal; and the second control signal includes a control signal.

[0121] In this embodiment, the second target type of dirt typically has stronger adhesion and requires stronger vibration energy to remove. By controlling multiple ultrasonic transducers with a single control signal, the multiple ultrasonic transducers can work together in the same vibration mode, forming a unified vibration field, thereby concentrating energy to remove stubborn dirt.

[0122] In some embodiments, the second control signal can have a higher frequency and a larger amplitude. For example, the frequency of the PWM signal can be set to 100 kHz or higher, and the duty cycle can be set to 70% or higher, so that the multiple ultrasonic transducers generate high-frequency, high-energy vibrations, thereby breaking up ice and loosening sediment.

[0123] In one example, the second control signal is Figure 9 As shown, Figure 10 This is a diagram of the voltage excitation sequence after the PWM signal is amplified. After the PWM signal is amplified, it is mapped into voltage (Volts), and the corresponding voltage is output to control the ultrasonic transducer to operate simultaneously in the same direction and frequency.

[0124] In this embodiment, a control signal is used to coordinate the vibrations of multiple ultrasonic transducers, so that each ultrasonic transducer operates with the same vibration parameters, forming a highly coordinated vibration field, thereby improving the cleaning effect on the second target type of dirt.

[0125] In some embodiments, before controlling the plurality of ultrasonic transducers to generate ultrasonic waves according to the target control signal, the method includes:

[0126] Generate circuit on / off signal;

[0127] The circuit on / off between the plurality of ultrasonic transducers is controlled according to the circuit on / off signal, so that the plurality of ultrasonic transducers are connected in parallel or in series.

[0128] In this embodiment, the circuit on / off signal is a signal for controlling the connection state of the circuits between the ultrasonic transducers. The circuit on / off signal can be used to make the circuits between the ultrasonic transducers form a parallel circuit or a series circuit.

[0129] When multiple ultrasonic transducers are connected in parallel, they share the same voltage, but the current is dispersed to each ultrasonic transducer. This makes it suitable for scenarios that require a larger vibration area but do not require extremely high vibration intensity. When multiple ultrasonic transducers are connected in series, they share the same current, but the voltage is accumulated. This makes it suitable for scenarios that require higher vibration intensity but a smaller vibration area. Therefore, in some embodiments, the decision to connect multiple ultrasonic transducers in parallel or in series can be made based on the area of dirt on the lens surface. For example, if the area of dirt on the lens surface is large, multiple ultrasonic transducers can be connected in series. If the area of dirt on the lens surface is small, multiple ultrasonic transducers can be connected in parallel, thereby achieving a better cleaning effect.

[0130] In one example, the circuit between the ultrasonic transducers is as follows Figure 11 As shown, when the dirt type is the first target type, the on-off module 50 between the A transducer 30 and the B transducer 40 is disconnected, and the control module 10 can output the PWM signal through the PWM_A, PWM_B; PWM_C, PWM_D combination pins, and amplify and boost the PWM signal through the driving module 20 to control and drive the A transducer 30 and the B transducer 40 according to Figure 6 、 Figure 7 and Figure 8 The PWM signal and the boost excitation sequence vibrate in the same direction but at different frequencies one after another. When the dirt type is the second target type, the control module 10 outputs the circuit on-off signal through the SW pin to control the on-off module 50 to turn on, thereby controlling the A transducer 30 and the B transducer 40 to turn on, so that the A transducer 30 and the B transducer 40 are connected in series. The control module 10 then outputs the PWM signal through the combination pins such as PWM_A and PWM_C, PWM_A and PWM_D, PWM_B and PWM_C, or PWM_B and PWM_D, and amplifies and boosts the PWM signal through the drive module 20 to control the A transducer 30 and the B transducer 40 to turn on according to the PWM signal. Figure 9 and Figure 10 It shows the PWM signal and boost excitation sequence, and the same direction and frequency series resonance.

[0131] In one example, the circuit between the ultrasonic transducers is as follows Figure 12 As shown, when the dirt type is the first target type, the on-off module 50 between the A transducer 30 and the B transducer 40 is disconnected, and the control module 10 can output the PWM signal through the PWM_A, PWM_B; PWM_C, PWM_D combination pins, and amplify and boost the PWM signal through the driving module 20 to control and drive the A transducer 30 and the B transducer 40 according to Figure 6 、 Figure 7 and Figure 8The PWM signal and the boost excitation sequence vibrate in the same direction but at different frequencies one after another. When the dirt type is the second target type, the control module 10 outputs the circuit on-off signal through the SW pin to control the on-off module 50 to turn on, thereby controlling the A transducer 30 and the B transducer 40 to turn on, so that the A transducer 30 and the B transducer 40 are connected in series. The control module 10 then outputs the PWM signal through the combination pins such as PWM_A and PWM_C, PWM_A and PWM_D, PWM_B and PWM_C, or PWM_B and PWM_D, and amplifies and boosts the PWM signal through the drive module 20 to control the A transducer 30 and the B transducer 40 to turn on according to the PWM signal. Figure 9 and Figure 10 It shows the PWM signal and boost excitation sequence, and the same direction and frequency series resonance.

[0132] In this embodiment, multiple ultrasonic transducers are connected in parallel or in series through circuit on / off signals, and the working mode of the ultrasonic transducer can be flexibly adjusted according to different dirt types and cleaning requirements to improve the cleaning effect on different dirt.

[0133] The following describes the lens cleaning method, system and vehicle of the embodiment of the present application through a scenario example. Figure 13 As shown, this scenario example may include the following steps.

[0134] S100 , the control module 10 receives a signal indicating the presence of contaminants on the surface of the lens 1 and the type of the contaminants.

[0135] S200 , determining whether the contaminant type on the surface of the lens 1 is liquid contaminant.

[0136] Liquid pollutants may be the first target type of dirt mentioned above, including but not limited to rain, fog, etc.; non-liquid pollutants may be the second target type of dirt mentioned above, including but not limited to ice, mud, etc.

[0137] When the control module 10 determines that the contaminant type on the surface of the lens 1 is liquid contaminant, S300 is executed; otherwise, S700 is executed.

[0138] S300 , the control module 10 generates two PWM signals and sends them to the driving module 20 through the pins according to the timing.

[0139] Generating two types of PWM signals can control the A transducer 30 and the B transducer 40 respectively. Sending the PWM signals in a time sequence can make the A transducer 30 and the B transducer 40 vibrate alternately.

[0140] S400 , the driving module 20 boosts the voltage according to the excitation signal, and applies the boosted excitation to the A transducer 30 and the B transducer 40 respectively according to a time sequence.

[0141] The excitation signal in S400 may be a PWM signal, and the two PWM signals are boosted and amplified so as to have enough energy to drive the A transducer 30 and the B transducer 40 .

[0142] At step S500 , the A transducer 30 and the B transducer 40 vibrate in the same direction but at different frequencies in succession according to the boost excitation sequence applied by the driving module 20 .

[0143] S700 , the control module 10 generates an on / off signal and a PWM signal, and sends the on / off signal and the PWM signal to the on / off module 50 and the driving module 20 through the pins according to a timing sequence.

[0144] S800, the on-off module 50 switches the circuit according to the on-off signal to realize the series or parallel connection of transducer A 30 and transducer B 40, and the driving module 20 performs boost amplification according to a PWM signal, and applies the boost excitation to transducer A 30 and transducer B 40 at the same time according to the timing.

[0145] At S900 , the A transducer 30 and the B transducer 40 vibrate simultaneously in the same direction and frequency according to the boost excitation sequence applied by the driving module 20 .

[0146] The lens cleaning method provided in the embodiments of the present application can be performed by a lens cleaning device. The lens cleaning method provided in the embodiments of the present application is described using a lens cleaning device as an example. The embodiments of the present application also provide a lens cleaning device.

[0147] like Figure 14 As shown, the lens cleaning device includes:

[0148] The control module 1410 is configured to, when dirt is detected on the lens surface, control the plurality of ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens.

[0149] According to the lens cleaning device of the present application, upon identifying the presence of dirt on the lens surface, the device controls multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens. In this embodiment of the present application, multiple ultrasonic transducers are arranged on the lens surface. The ultrasonic waves generated by the multiple ultrasonic transducers subject the dirt on the lens surface to alternating mechanical forces. The binding force between the dirt and the lens surface gradually weakens under high-frequency vibration, causing the dirt to loosen and fall off. Furthermore, considering the differences in physical properties of different types of dirt, the vibration mode can be adjusted according to the dirt type, thereby improving the lens cleaning effect.

[0150] The lens cleaning device in the embodiments of the present application can be an electronic device or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other device other than a terminal. For example, the electronic device can be an in-vehicle electronic device, a mobile internet device (MID), a robot, an ultra-mobile personal computer (UMPC), an ECU (Electronic Control Unit), an MCU (Microcontroller Unit) or other controller, etc. It can also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., and the embodiments of the present application do not specifically limit this.

[0151] The lens cleaning device in the embodiment of the present application can be a device having an operating system. The operating system can be a Microsoft (Windows) operating system, an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0152] In some embodiments, as Figure 15 As shown, an embodiment of the present application further provides an electronic device 1500, including a processor 1501, the processor 1501 being connected to a memory 1502, the memory 1502 storing a computer program that can be run on the processor 1501, and the program, when executed by the processor 1501, implements the various processes of the above-mentioned lens cleaning method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0153] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0154] The embodiment of the present application also provides a lens cleaning system, comprising: a plurality of ultrasonic transducers and a controller disposed on a lens surface;

[0155] A controller is used to execute the lens cleaning method according to the first aspect.

[0156] The controller may be the electronic device mentioned above.

[0157] In an embodiment of the present application, the lens cleaning system may include multiple ultrasonic transducers, and the multiple ultrasonic transducers may be set on the lens surface. For example, multiple ultrasonic transducers may be set on the surface of a camera lens. When the lens cleaning system is running, the controller can control the multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the camera lens.

[0158] An embodiment of the present application further provides a lens system, including a lens, and a cleaning system for the lens or the electronic device.

[0159] In an embodiment of the present application, a lens system includes a lens. For example, the lens may be a camera lens, a radar lens, a camera protective cover, a radar protective cover, or a lampshade of various lamps, such as a transparent housing or lampshade of a vehicle lamp. The lens system may also include the lens cleaning system or the electronic device described above. The lens cleaning system or the electronic device controls multiple ultrasonic transducers to generate ultrasonic waves in a vibration pattern corresponding to the type of dirt to clean the lens.

[0160] An embodiment of the present application further provides a vehicle lamp comprising the above-mentioned lens system.

[0161] In an embodiment of the present application, the car lamp may include the above-mentioned lens system, where the lens is the lampshade of the car lamp, and multiple ultrasonic transducers may be arranged on the inner surface of the lampshade. When the lens system identifies that there is dirt on the surface of the lampshade, it controls the multiple ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lampshade according to the type of dirt.

[0162] An embodiment of the present application further provides a vehicle, which includes the lens cleaning system, the electronic device, the lens system, or the headlight.

[0163] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the various processes of the above-mentioned lens cleaning method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0164] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0165] An embodiment of the present application further provides a computer program product, including a computer program, which implements the above-mentioned lens cleaning method when executed by a processor.

[0166] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0167] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, which is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-mentioned lens cleaning method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0168] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0169] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0170] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0171] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0172] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0173] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and purpose of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lens cleaning method, characterized in that: A plurality of ultrasonic transducers are provided on the surface of the lens, and the method includes: When dirt is detected on the lens surface, the plurality of ultrasonic transducers are controlled to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens.

2. The method according to claim 1, characterized in that When the dirt type is the first target type, the vibration mode of the ultrasonic transducer includes that the vibration directions of the plurality of ultrasonic transducers are the same, and the vibration frequencies of at least some of the plurality of ultrasonic transducers are different.

3. The method according to claim 1 or 2, characterized in that When the dirt type is the second target type, the vibration mode includes the plurality of ultrasonic transducers having the same vibration direction and the plurality of ultrasonic transducers having the same vibration frequency.

4. The method according to any one of claims 1 to 3, characterized in that The step of controlling the plurality of ultrasonic transducers to generate ultrasonic waves in a vibration mode corresponding to the dirt type to clean the lens includes: generating a target control signal corresponding to the dirt type; The plurality of ultrasonic transducers are controlled according to the target control signal to generate ultrasonic waves to clean the lens.

5. The method according to claim 4, characterized in that In the case where the dirt type is the first target type, the target control signal is a first control signal; the first control signal includes a plurality of different control signals, and different control signals correspond to controlling different ultrasonic transducers.

6. The method according to claim 5, characterized in that The step of controlling the plurality of ultrasonic transducers to generate ultrasonic waves to clean the lens according to the target control signal comprises: Different ultrasonic transducers are controlled to generate ultrasonic waves respectively by using a plurality of different control signals of the first control signal in a preset time sequence, so that at least part of the ultrasonic transducers generate ultrasonic waves alternately.

7. The method according to any one of claims 4 to 6, characterized in that In the case where the dirt type is a second target type, the target control signal is a second control signal; and the second control signal includes a control signal.

8. The method according to claim 7, characterized in that Before controlling the plurality of ultrasonic transducers to generate ultrasonic waves according to the target control signal, the method includes: Generate circuit on / off signal; The circuit on / off between the plurality of ultrasonic transducers is controlled according to the circuit on / off signal, so that the plurality of ultrasonic transducers are connected in parallel or in series.

9. The method according to any one of claims 1 to 8, characterized in that At least some of the plurality of ultrasonic transducers are arranged on the outer surface of the lens, and at least some of the ultrasonic transducers are arranged on the inner surface of the lens.

10. The method according to any one of claims 1 to 9, characterized in that The number of ultrasonic transducers is two.

11. A lens cleaning system, characterized in that: include: A plurality of ultrasonic transducers and a controller are provided on the surface of the lens; The controller is used to execute the method according to any one of claims 1 to 10.

12. An electronic device comprising a processor, the processor being connected to a memory, the memory storing a computer program executable on the processor, wherein: When the processor executes the program, the method according to any one of claims 1 to 10 is implemented.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 10 is implemented.

14. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 10 is implemented.

15. A lens system, characterized in that: The invention comprises a lens, and the lens cleaning system according to claim 11 or the electronic device according to claim 12.

16. A vehicle lamp, characterized in that: Comprising the lens system of claim 15.

17. A vehicle, characterized in that: A lens cleaning system comprising the lens according to claim 11, an electronic device according to claim 12, a lens system according to claim 15, or a vehicle lamp according to claim 16.

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