A vehicle-mounted camera and a method for controlling its high-speed rotation.

Abstract

This invention relates to the field of vehicle-mounted camera technology, and in particular to a vehicle-mounted camera and a method for controlling its high-speed rotation. The vehicle-mounted camera includes a main body and a lens structure mounted on the main body. The main body and the lens structure are movably connected. An electromagnetic module is disposed within the main body, and a permanent magnet is disposed within the lens structure. The method mainly involves: generating an alternating magnetic field through the electromagnetic module by passing an alternating current; driving the permanent magnet through this alternating magnetic field to rotate the lens structure relative to the main body. This invention, by designing the lens structure to rotate relative to the main body and utilizing the cooperation of the electromagnetic module and the permanent magnet to make this relative rotation controllable, allows the lens structure to remove adhering substances from surfaces through rotation, achieving rapid cleaning.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted camera technology, and in particular to a vehicle-mounted camera and a method for controlling the high-speed rotation of the camera. Background Technology

[0002] With the continuous development of automotive technology and the increasing number of cars on the road, in-vehicle cameras are now widely used in vehicle surround view and intelligent driving assistance functions. However, in inclement weather such as rain, the camera surface is easily obscured by rainwater and mud. Even though current in-vehicle cameras have active spray systems, the high-definition cameras used in ADAS require very high image resolution and real-time performance. The blurring and distortion caused by active spray systems are also unacceptable. Summary of the Invention

[0003] This invention addresses the problems of existing technologies by providing a vehicle-mounted camera and a method for controlling the high-speed rotation of the camera, which can quickly and efficiently remove water and dust, thereby keeping the camera lens clean.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] The present invention provides a vehicle-mounted camera, including a main body and a lens structure mounted on the main body. The main body and the lens structure are movably connected. An electromagnetic module is provided inside the main body, and a permanent magnet is provided in the lens structure. When in operation, the electromagnetic module generates an alternating magnetic field due to the flow of alternating current. The alternating magnetic field drives the permanent magnet to move, thereby causing the lens structure to rotate relative to the main body.

[0006] Furthermore, the lens structure includes a mounting base and a lens. The mounting base is rotatably mounted on the main body, and the lens is mounted on the mounting base. The mounting base is provided with a mounting groove, and there are multiple permanent magnets. The multiple permanent magnets are arranged in a circular array around the central axis of the mounting base and fixed in the mounting groove.

[0007] Furthermore, the electromagnetic module includes several electromagnets, which are arranged in a circular array within the main body with the central axis of the main body as the center, and a permanent magnet is located between the several electromagnets.

[0008] The number of electromagnets is odd, and the number of permanent magnets is even; or

[0009] The number of electromagnets is even, and the number of permanent magnets is odd.

[0010] Furthermore, the main body is provided with a first sealing structure, and a second sealing structure and a dehumidification module are provided between the main body and the lens structure. The first sealing structure is used to keep the inside of the main body sealed, the second sealing structure is used to seal between the main body and the lens structure, and the dehumidification module is used to expel the moisture between the main body and the lens structure to the outside.

[0011] A control method for high-speed rotation of a camera applied to the above-mentioned vehicle-mounted camera includes the following steps:

[0012] S100. Inspect the lens structure to determine the visibility of the vehicle-mounted camera;

[0013] S200. Compare the visibility with a preset threshold. When the visibility is lower than the preset threshold, input an alternating magnetic field to the electromagnetic module so that the permanent magnet moves in the alternating magnetic field and drives the lens structure to rotate relative to the main body. Use the centrifugal force generated by the rotation to throw the obstruction on the surface of the lens structure away from the lens structure.

[0014] S300. Adjusts the working status of the electromagnetic module according to the visibility change trend of the lens structure.

[0015] Furthermore, step S300 specifically includes:

[0016] S310. Monitor changes in visibility of the lens structure and external weather conditions;

[0017] S320. Determine the visibility trend of the lens structure based on the external weather conditions, and then adjust the working state of the electromagnetic module in combination with the visibility trend of the lens structure.

[0018] The electromagnetic module's operating states include power off, continuous power on, and periodic power on.

[0019] Furthermore, step S320 specifically includes:

[0020] S321. Infer the weather outside based on the surrounding temperature, humidity, and brightness;

[0021] S322. Infer the external environment based on road surface information;

[0022] S323. When the weather is severe or / and the environment is severe, the working state of the electromagnetic module shall be adjusted to continuous power supply;

[0023] S324. When the weather is mildly inclement or / and the environment is an outdoor environment, the working state of the electromagnetic module shall be adjusted to periodic power-on.

[0024] Furthermore, step S100 specifically includes:

[0025] S110. Acquire and analyze images captured by the vehicle-mounted camera to determine the visibility of the vehicle-mounted camera;

[0026] S120. Control the electromagnetic module to determine the location of the attached object based on the changes in the image captured by the vehicle camera, and execute step S200 or S130 based on the location of the attached object.

[0027] S130. Control the operation of the dehumidification module to expel moisture between the main body and the lens structure.

[0028] Furthermore, step S120 specifically includes:

[0029] S121. A first current is applied to the electromagnetic module to drive the lens structure to rotate at a low speed through the electromagnetic module;

[0030] S122. Determine the changes in the image captured by the vehicle-mounted camera when the lens structure rotates at low speed;

[0031] S123. If the object in the image captured by the vehicle camera rotates with the rotation of the lens structure, then proceed to step S200; if the object in the image captured by the vehicle camera does not rotate with the rotation of the lens structure, then proceed to step S130.

[0032] Furthermore, step S130 specifically includes:

[0033] S131. The blow valve and exhaust valve are opened to allow the car's air conditioning to connect with the interior of the vehicle camera;

[0034] S132. Dry gas is blown into the interior of the vehicle camera through the car's air conditioning.

[0035] S133. The gas inside the vehicle camera leaves through the exhaust valve to remove moisture from inside the vehicle camera.

[0036] The beneficial effects of the present invention are as follows: The present invention designs the lens structure and the main body to be able to rotate relative to each other, and uses an electromagnetic module and a permanent magnet to make the relative rotation controllable, so that the lens structure can shake off the deposits attached to the surface by rotating, thereby achieving the purpose of rapid cleaning. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of Example 1.

[0038] Figure 2 This is an exploded view of Example 1.

[0039] Figure 3 This is a schematic diagram illustrating the principle of the electromagnetic module and permanent magnet working together in Example 1.

[0040] Figure 4 This is a schematic diagram of the second sealing structure in Example 1.

[0041] Figure 5 This is a flowchart of Example 2.

[0042] Figure 6 This is the electrical control schematic diagram for Example 2.

[0043] Reference numerals: 1—Main body, 2—Lens structure, 3—Electromagnetic module, 4—Permanent magnet, 6—Second sealing structure, 7—Dehumidification module, 21—Mounting base, 22—Lens, 23—Mounting groove, 31—Electromagnet, 61—Groove, 62—Ring, 71—Inlet valve, 72—Exhaust valve. Detailed Implementation

[0044] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] like Figures 1 to 3 As shown, this embodiment provides a vehicle-mounted camera, including a main body 1 and a lens structure 2 installed on the main body 1. The main body 1 and the lens structure 2 are movably connected. An electromagnetic module 3 is provided inside the main body 1, and a permanent magnet 4 is provided in the lens structure 2. When working, the electromagnetic module 3 generates an alternating magnetic field due to the passage of alternating current. The alternating magnetic field drives the permanent magnet 4 to move, thereby causing the lens structure 2 to rotate relative to the main body 1.

[0047] This embodiment is applied to automobiles, such as new energy vehicles. The main body 1 contains the basic structure required for an in-vehicle camera, which is a conventional method in this field and will not be described in detail here; while the lens structure 2 can be the lens module of the in-vehicle camera, or a protective cover covering the lens of the in-vehicle camera.

[0048] During operation, the main body 1 interacts with the vehicle's main control module to transmit images captured by the vehicle's camera to the main control module for processing. When objects such as rainwater or mud appear in the image, the main control module applies an alternating current to the electromagnetic module 3 to generate an alternating magnetic field. This alternating magnetic field causes the permanent magnet 4 to move in the corresponding direction, thereby rotating the lens structure 2 relative to the main body 1. The centrifugal force of the rotation then flings the objects attached to the lens structure 2 away, achieving a fast and real-time cleaning effect on the lens structure 2.

[0049] The principle by which the electromagnetic module 3 drives the permanent magnet 4 through an alternating magnetic field can be referenced to the working principle of commonly used motors. However, since this embodiment utilizes centrifugal force to drive the lens structure 2 to rotate relative to the main body 1, the effect is different from that of a conventional motor driving the rotation of an object (e.g., a motor driving the entire vehicle camera to adjust its angle). Therefore, conventional motors can only be used as a principle reference and cannot be considered as prior art in this embodiment.

[0050] Since the frequency of the alternating current can be set, as long as the alternating current is set large enough (the specific parameters can be obtained through experiments, which will not be elaborated here), the rotation rate of the lens structure 2 relative to the main body 1 will also be very high. Thus, the centrifugal force brought by the high rotation speed can be used to quickly get rid of the attachments, making the image captured by the vehicle camera clear enough again, which is suitable for intelligent assisted driving in bad weather and road conditions.

[0051] In this embodiment, the lens structure 2 includes a mounting base 21 and a lens 22. The mounting base 21 is rotatably disposed on the main body 1, and the lens 22 is mounted on the mounting base 21. The mounting base 21 is provided with a mounting groove 23. There are multiple permanent magnets 4. The multiple permanent magnets 4 are arranged in a ring 62 array around the central axis of the mounting base 21 and fixed in the mounting groove 23.

[0052] To ensure effective driving, the mounting base 21 is approximately cylindrical. The lens 22 is installed within a through-hole (not shown in the figure) of the mounting base 21, allowing the main body 1 to capture images of the outside world through the through-hole and the lens 22. The number of permanent magnets 4 is not limited, but at least two are required, and the magnetic field directions of adjacent permanent magnets 4 are preferably opposite. This allows multiple permanent magnets 4 to work together under an alternating magnetic field, causing the lens 22 structure to rotate in a counter-clockwise / clockwise direction. This maximizes the efficiency of the power generated by the change in the magnetic field of the permanent magnets 4 on the lens 22 structure.

[0053] In this embodiment, the electromagnetic module 3 includes a plurality of electromagnets 31, which are arranged in a ring 62 array within the main body 1 with the central axis of the main body 1 as the center, and the permanent magnet 4 is located between the plurality of electromagnets 31.

[0054] The number of electromagnets 31 is odd, and the number of permanent magnets 4 is even; or

[0055] The number of electromagnets 31 is even, and the number of permanent magnets 4 is odd.

[0056] The internal shape of the main body 1 is also cylindrical, thus ensuring the uniformity of the magnetic field distribution. The number of electromagnets 31 and permanent magnets 4 must be either even or odd, and the magnetic field directions of adjacent electromagnets 31 are opposite. Based on this structure, it is ensured that in the initial stage, the lens structure 2 will not fail to rotate relative to the main body 1 due to an intermediate state of perfect force balance between the electromagnets 31 and permanent magnets 4.

[0057] In this embodiment, the main body 1 is provided with a first sealing structure (not shown in the figure), and a second sealing structure 6 and a dehumidification module 7 are provided between the main body 1 and the lens structure 2. The first sealing structure is used to keep the inside of the main body 1 sealed, the second sealing structure 6 is used to seal between the main body 1 and the lens structure 2, and the dehumidification module 7 is used to discharge the moisture between the main body 1 and the lens structure 2 to the outside.

[0058] The first sealing structure of the main body 1 is a conventional structure, which only needs to ensure the internal sealing of the main body 1 and prevent external moisture or particulate matter from entering the electronic structure of the main body 1. Therefore, this invention does not show the first sealing structure and will not affect the understanding of those skilled in the art. The second sealing structure 6 is preferably a mechanical seal or a structure composed of grooves 61 and rings 62. The mechanical seal ensures the sealing between the main body 1 and the lens structure 2, while also allowing the lens structure 2 to rotate relative to the main body 1. For example, in this embodiment, the second sealing structure 6 is a combination of three grooves 61 and three rings 62, that is, the three rings 62 are inserted into the three grooves 61 one by one, thereby using a stepped structure to block external particulate matter, water, etc. from entering between the lens structure 2 and the main body 1, achieving a sealing effect.

[0059] Of course, the second sealing structure 6 needs to take into account the factors of relative rotation between the lens structure 2 and the main body 1, resulting in a lower sealing performance than the first sealing structure. That is, a very small amount of particulate matter and water will still enter between the lens structure 2 and the main body 1. Therefore, this embodiment is also equipped with a dehumidification module 7, which includes at least one air intake valve 71 and one air exhaust valve 72. The air intake valve 71 and the air exhaust valve 72 are respectively connected to the air conditioning or other air ducts in the car. The air flow generated by the air conditioning or air ducts, combined with the air flow in the internal space between the lens structure 2 and the main body 1 when they rotate relative to the main body 1, forces the particulate matter and water that enter the internal space to leave through the air exhaust valve 72, thereby achieving a cleaning effect on the space between the lens structure 2 and the main body 1.

[0060] Example 2

[0061] like Figure 4 and Figure 5As shown, this embodiment provides a control method for high-speed rotation of a camera applied to the vehicle-mounted camera described in Embodiment 1, including the following steps:

[0062] S100. Inspect the lens structure 2 to determine the visibility of the vehicle camera;

[0063] S200. Compare the visibility with a preset threshold. When the visibility is lower than the preset threshold, input an alternating magnetic field to the electromagnetic module 3 so that the permanent magnet 4 moves in the alternating magnetic field and drives the lens structure 2 to rotate relative to the main body 1. Use the centrifugal force generated by the rotation to throw the obstruction on the surface of the lens structure 2 away from the lens structure 2.

[0064] S300. Adjust the working state of the electromagnetic module 3 according to the visibility change trend of the lens structure 2.

[0065] It should be noted that this embodiment is applied based on an in-vehicle camera installed in a car. That is, in addition to connecting to the in-vehicle camera, the car's main control module also connects to other sensors and cameras. By combining the data fed back by these sensors and cameras with the image transmitted by the in-vehicle camera described in Embodiment 1, it can be determined whether the reduced visibility of the in-vehicle camera is due to external brightness or external debris. If it is due to external brightness, only corresponding image processing or turning on the in-vehicle camera's light source is needed. If the reduced visibility is due to external debris such as rain, simply controlling the rotation of the lens structure 2 relative to the main body 1 will dislodge these debris, achieving a cleaning effect.

[0066] In this embodiment, step S300 specifically includes:

[0067] S310. Monitor the visibility changes of lens structure 2 and the external weather environment;

[0068] S320. Determine the visibility change trend of lens structure 2 based on the external weather environment, and then adjust the working state of electromagnetic module 3 in combination with the visibility change trend of lens structure 2.

[0069] The working states of electromagnetic module 3 include power off, continuous power on, and periodic power on.

[0070] During the rotation process, it is necessary to constantly monitor the visibility changes of the vehicle camera. If the object attached to the vehicle camera is located outside the vehicle camera and the weather and / or environment are good (e.g., walking on a sunny day or a clean road), the object can be shaken off during the rotation of the lens structure 2. At this time, the lens structure 2 can stop rotating to avoid excessive wear, i.e., the electromagnetic module 3 switches to a power-off state. However, if walking in bad weather (rain, snow, etc.) and / or in bad environment (off-road, muddy roads, etc.), there is always a possibility that the object will attach to the lens structure 2. In this case, the vehicle camera must be kept in a rotating state at all times, i.e., the electromagnetic module 3 switches to a continuously powered state.

[0071] In this embodiment, the electromagnetic module 3 also has a periodic energizing state, mainly considering the following factors:

[0072] 1. When the weather is light rain or light snow, the lens structure 2 will take a relatively long time to be blocked by the deposits again. In this case, a periodic power-on state is adopted, which makes the lens structure 2 rotate at high speed periodically and then stop. This can ensure that the deposits are cleaned before they affect the image accuracy.

[0073] Second, in environments with high humidity, such as the humid weather in southern China, moisture can easily enter the space between the lens structure 2 and the main body 1. In this case, the lens structure 2 is rotated periodically relative to the main body 1, in conjunction with the dehumidification module 7, to expel the moisture from the vehicle camera in a timely manner, so as to ensure that the moisture does not affect the image acquisition accuracy.

[0074] In this embodiment, step S320 specifically includes:

[0075] S321. Infer the weather outside based on the surrounding temperature, humidity, and brightness;

[0076] S322. Infer the external environment based on road surface information;

[0077] S323. When the weather is severe or / and the environment is severe, the working state of the electromagnetic module 3 shall be adjusted to continuous power supply;

[0078] S324. When the weather is mildly inclement or / and the environment is an outdoor environment, the working state of the electromagnetic module 3 shall be adjusted to periodic power-on.

[0079] For automobiles, the accuracy of weather information obtained solely from the network is insufficient. Therefore, this embodiment utilizes parameters acquired by the vehicle's sensors and other electronic components to determine the weather conditions during vehicle operation. Furthermore, it infers the vehicle's driving environment through parameters from cameras and sensors. Once both the weather and driving environment are determined, it can be inferred whether the lens structure 2 will be attached to any object, thereby switching the operating state of the electromagnetic module 3.

[0080] It should be noted that severe weather mainly includes foggy days, rainy days, and snowy days, while harsh environments mainly include muddy roads and off-road trails; mild severe weather mainly includes light rain, humid weather, and snowy days, while harsh outdoor environments mainly include dusty roads such as rural highways.

[0081] In this embodiment, step S100 specifically includes:

[0082] S110. Acquire and analyze images captured by the vehicle-mounted camera to determine the visibility of the vehicle-mounted camera;

[0083] S120. Control the electromagnetic module 3 to determine the location of the attached object based on the changes in the image captured by the vehicle camera, and execute step S200 or S130 based on the location of the attached object.

[0084] S130. Control the operation of the dehumidification module 7 to expel moisture between the main body 1 and the lens structure 2.

[0085] Specifically, the visibility analysis mainly determines whether the image currently acquired by the lens structure 2 meets the requirements for ADAS use. If the visibility is qualified, there is no need to immediately execute step S120.

[0086] The visibility judgment criteria described in this embodiment are as follows: when only water mist adheres to the lens structure 2, the visibility is judged to be qualified according to preset conditions; when there are relatively obvious particles or water droplets adhering to the lens structure 2, as long as the obstruction area exceeds 5% of the image area, the visibility is considered unqualified. This ensures that the images acquired by the vehicle-mounted camera are sufficient for ADAS applications.

[0087] In this embodiment, step S120 specifically includes:

[0088] S121. A first current is passed through the electromagnetic module 3 to drive the lens structure 2 to rotate at a low speed.

[0089] S122. When the lens structure 2 rotates at low speed, determine the changes in the image captured by the vehicle camera;

[0090] S123. If the object in the image captured by the vehicle camera rotates with the rotation of the lens structure 2, then proceed to step S200; if the object in the image captured by the vehicle camera does not rotate with the rotation of the lens structure 2, then proceed to step S130.

[0091] In step S120, it is necessary to first determine where the deposits are mainly distributed. The simplest way is to control the lens structure 2 to rotate at a low speed. If the deposits are located on the lens structure 2, they will likely rotate with the lens structure 2. If the deposits are located between the main body 1 and the lens structure 2 (i.e., attached to the main body 1), they will not rotate with the lens structure 2 when it rotates. By using the above method, the distribution of the deposits can be quickly determined, so as to decide whether to use the method of step S200 or step S130 to remove the deposits.

[0092] Of course, there is also an extreme case where the deposit is located between the main body 1 and the lens structure 2 but is attached to the lens structure 2. In this case, this embodiment needs to execute step S200 first. When it is found that the deposit has not been removed after a certain period of time (such as 1 second), step S130 is executed. At this time, step S200 and step S130 need to be used in combination. That is, the rotation of the lens structure 2 disturbs the gas in the space, and the air is guided by the dehumidification module 7. Only by the combination of the two can the deposit be removed more smoothly and efficiently.

[0093] In this embodiment, step S130 specifically includes:

[0094] S131. The blow valve and exhaust valve 72 are opened to allow the car's air conditioning to connect with the interior of the vehicle camera;

[0095] S132. Dry gas is blown into the interior of the vehicle camera through the car's air conditioning.

[0096] S133. The gas inside the vehicle camera leaves through the exhaust valve 72 to remove moisture from inside the vehicle camera.

[0097] That is, the space inside the lens structure 2 and the main body 1 is connected to the car's air conditioning system. So when it is necessary to clean the space, both the air blowing valve and the exhaust valve 72 can be opened to allow the gas inside the space to flow with the outside, and the cleaning effect is achieved through the flow of gas.

[0098] Of course, to further improve cleaning efficiency, the lens structure 2 can be controlled to rotate at high speed when both the air blowing valve and the exhaust valve 72 are open, so that the air flow is stronger.

[0099] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A vehicle-mounted camera, comprising a main body and a lens structure mounted on the main body, characterized in that, The main body and the lens structure are movably connected. An electromagnetic module is installed inside the main body, and a permanent magnet is installed in the lens structure. When working, the electromagnetic module generates an alternating magnetic field due to the input of alternating current. The alternating magnetic field drives the permanent magnet to move, thereby causing the lens structure to rotate relative to the main body. The electromagnetic module includes several electromagnets, which are arranged in a circular array within the main body with the central axis of the main body as the center, and a permanent magnet is located between the electromagnets. The number of electromagnets is odd, and the number of permanent magnets is even; or The number of electromagnets is even, and the number of permanent magnets is odd; The main body is provided with a first sealing structure, and a second sealing structure and a dehumidification module are provided between the main body and the lens structure. The first sealing structure is used to keep the inside of the main body sealed, the second sealing structure is used to seal between the main body and the lens structure, and the dehumidification module is used to discharge the moisture between the main body and the lens structure to the outside.

2. The vehicle-mounted camera according to claim 1, characterized in that, The lens structure includes a mounting base and a lens. The mounting base is rotatably mounted on the main body, and the lens is mounted on the mounting base. The mounting base is provided with a mounting groove, and there are multiple permanent magnets. The multiple permanent magnets are arranged in a circular array around the central axis of the mounting base and fixed in the mounting groove.

3. A control method for high-speed rotation of a camera in a vehicle-mounted camera as described in any one of claims 1-2, characterized in that, Includes the following steps: S100. Inspect the lens structure to determine the visibility of the vehicle camera; S200. Compare the visibility with a preset threshold. When the visibility is lower than the preset threshold, input an alternating magnetic field to the electromagnetic module so that the permanent magnet moves in the alternating magnetic field and drives the lens structure to rotate relative to the main body. Use the centrifugal force generated by the rotation to throw the obstruction on the surface of the lens structure away from the lens structure. S300. Adjusts the working status of the electromagnetic module according to the visibility change trend of the lens structure.

4. The control method for high-speed rotation of a camera according to claim 3, characterized in that, Step S300 specifically includes: S310. Monitor changes in visibility of the lens structure and external weather conditions; S320. Determine the visibility trend of the lens structure based on the external weather conditions, and then adjust the working state of the electromagnetic module in combination with the visibility trend of the lens structure. The electromagnetic module's operating states include power off, continuous power on, and periodic power on.

5. The control method for high-speed rotation of a camera according to claim 4, characterized in that, Step S320 specifically includes: S321. Infer the weather outside based on the surrounding temperature, humidity, and brightness; S322. Infer the external environment based on road surface information; S323. When the weather is severe or / and the environment is severe, the working state of the electromagnetic module shall be adjusted to continuous power supply; S324. When the weather is mildly inclement or / and the environment is an outdoor environment, the working state of the electromagnetic module shall be adjusted to periodic power-on.

6. The control method for high-speed rotation of a camera according to claim 3, characterized in that, Step S100 specifically includes: S110. Acquire and analyze images captured by the vehicle-mounted camera to determine the visibility of the vehicle-mounted camera; S120. Control the electromagnetic module to determine the location of the attached object based on the changes in the image captured by the vehicle camera, and execute step S200 or S130 based on the location of the attached object. S130. Control the operation of the dehumidification module to expel moisture between the main body and the lens structure.

7. The control method for high-speed rotation of a camera according to claim 6, characterized in that, Step S120 specifically includes: S121. A first current is applied to the electromagnetic module to drive the lens structure to rotate at a low speed through the electromagnetic module; S122. Determine the changes in the image captured by the vehicle-mounted camera when the lens structure rotates at low speed; S123. If the object in the image captured by the vehicle camera rotates with the rotation of the lens structure, then proceed to step S200; if the object in the image captured by the vehicle camera does not rotate with the rotation of the lens structure, then proceed to step S130.

8. The control method for high-speed rotation of a camera according to claim 6, characterized in that, Step S130 specifically includes: S131. The blow valve and exhaust valve are opened to allow the car's air conditioning to connect with the interior of the vehicle camera; S132. Dry gas is blown into the interior of the vehicle camera through the car's air conditioning. S133. The gas inside the vehicle camera leaves through the exhaust valve to remove moisture from inside the vehicle camera.

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