CN116781999A - A camera component, a vehicle-mounted system and a vehicle - Google Patents

Abstract

The application discloses a camera assembly, a vehicle-mounted system and a vehicle, relates to the technical field of camera devices, and is used for solving the problems of camera fogging, frosting or icing and the like. The camera assembly comprises a camera, a first coil, a second coil and a heating piece. Wherein, first coil sets up on the camera. The second coil is arranged on the camera and used for receiving the magnetic field generated by the first coil and converting the magnetic field into current. The heating element is electrically connected with the second coil and is used for receiving current generated by the second coil and generating heat to heat the camera. The application is used for the camera.

Description

A camera component, a vehicle-mounted system and a vehicle

Technical field

The present invention relates to the technical field of camera devices, and in particular, to a camera assembly, a vehicle-mounted system and a vehicle.

Background technique

With the development of electronic intelligence, cameras are more widely used in various fields. However, in cold and humid environments, when using cameras outdoors, the camera lens is prone to natural phenomena such as fogging and freezing. In this case, the camera imaging effect will be poor, and if it is not cleared in time, it will affect the user's use.

Contents of the invention

Embodiments of the present invention provide a camera assembly, a vehicle-mounted system and a vehicle for improving the problem of fogging or freezing of the camera lens.

In order to achieve the above objects, embodiments of the present invention adopt the following technical solutions:

The present application provides a camera assembly, which includes a camera, a first coil, a second coil and a heating element. Wherein, the first coil is arranged on the camera head. The second coil is disposed on the camera and is used to receive the magnetic field generated by the first coil and convert it into current. The heating element is electrically connected to the second coil and is used to receive the current generated by the second coil and generate heat to heat the camera.

In this case, a changing current (for example, an alternating current) can be passed into the first coil, so that under the action of the changing current, the first coil can generate an alternating magnetic field. In this case, the second coil receives the above-mentioned magnetic field and converts the magnetic energy into electrical energy, thereby generating a changing current in the second coil. The heating element is electrically connected to the second coil, so that the current in the second coil can flow through the heating element. Since the heating element is arranged on the camera, the heat generated by the heating element under the action of the current can heat the camera. heating.

Further, the camera includes a lens holder and a lens group, and the lens holder has a first installation cavity. The lens group is located in the first installation cavity. Wherein, the heating element is disposed between the lens group and the inner wall of the first mounting cavity, or is disposed on the outer wall of the first mounting cavity.

Further, the camera includes a lens base, a lens group and an image sensor. Wherein, the lens mount has a first installation cavity and a second installation cavity connected with the first installation cavity. The lens group is located in the first installation cavity. The image sensor is located in the second installation cavity and is used to receive light from the lens group and perform photoelectric conversion;

Wherein, the heating element is disposed between the image sensor and the inner wall of the second mounting cavity, or is disposed on the outer wall of the second mounting cavity close to the image sensor.

Further, the camera further includes a transmission chip, which is located in the second installation cavity and is electrically connected to the image sensor. The heating element is disposed between the transmission chip and the inner wall of the second installation cavity, or is disposed in the second installation cavity. on the outer wall near the transmission chip.

Further, the camera assembly further includes at least one insulating sleeve, at least one of the first coil, the second coil and the heating element is wrapped in the insulating sleeve, and the insulating sleeve is arranged on the camera head.

Further, the camera is nested in the insulating sleeve, and the insulating sleeve is a thermoplastic sleeve.

Further, the heating element is one or both of a resistance wire and a heating film.

Further, the camera assembly also includes a temperature-controlled resistor, which is connected in series with the heating element.

On the one hand, this application also provides a vehicle-mounted system, which includes an electronic control unit and the camera assembly mentioned in the above technical solution, and the camera assembly is electrically connected to the electronic control unit.

The vehicle-mounted system provided by the embodiment of the present application can achieve the same technical effect as the camera assembly provided by the above-mentioned embodiment, and will not be described again here.

Further, the electronic control unit includes an image processor, a microcontroller and a power chip. The image processor is electrically connected to the camera, and is used to receive electrical signals from the camera, generate image data, and obtain the clarity of the image data. The microcontroller is electrically connected to the image processor, and is used to issue control instructions if the resolution is less than the resolution threshold. The power chip is electrically connected to the microcontroller and the first coil in the camera assembly, and the power chip is used to supply power to the first coil according to the control instruction.

On the other hand, this application also provides a vehicle, which includes a body body and the vehicle-mounted system mentioned in the above technical solution, and the vehicle-mounted system is installed on the body body.

The vehicle provided by the embodiment of the present application can achieve the same technical effect as the vehicle system provided by the above embodiment, and will not be described again here.

Description of drawings

Figure 1 is a schematic diagram of a vehicle provided by an embodiment of the present application;

Figure 2 is a schematic diagram of the electrical connection between the camera assembly and the electronic control unit provided by the embodiment of the present application;

Figure 3 is a detailed diagram of some components in Figure 2 provided by the embodiment of the present application;

Figure 4 is an external schematic diagram of the first coil, the second coil and the heating element after installation according to the embodiment of the present application;

Figure 5 is a circuit diagram of the first coil, the second coil and the heating element provided by the embodiment of the present application;

Figure 6a is a schematic cross-sectional view of the first heating element installed at the lens group according to the embodiment of the present application;

Figure 6b is a schematic cross-sectional view of the second heating element installed at the lens group according to the embodiment of the present application;

Figure 7a is a schematic cross-sectional view of the first heating element installed at the image sensor according to the embodiment of the present application;

Figure 7b is a schematic cross-sectional view of the second heating element installed at the image sensor according to the embodiment of the present application;

Figure 8a is a schematic cross-sectional view of the first heating element installed at the transmission chip according to the embodiment of the present application;

Figure 8b is a schematic cross-sectional view of the second heating element installed at the transmission chip according to the embodiment of the present application;

Figure 9 is a schematic cross-sectional view of a heating element mounting substrate provided by an embodiment of the present application;

Figure 10 is a schematic cross-sectional view of another heating element mounting substrate provided by an embodiment of the present application;

Figure 11 is a schematic cross-sectional view of the heating element installed at the connector according to the embodiment of the present application;

Figure 12 is a schematic diagram of two heating elements installed at the camera according to the embodiment of the present application;

Figure 13 is a circuit diagram of the temperature control resistor and the heating element provided by the embodiment of the present application;

Figure 14 is a schematic cross-sectional view of an insulating sleeve and a heating element after installation according to an embodiment of the present application;

Figure 15 is a schematic cross-sectional view of another insulating sleeve and heating element after installation according to the embodiment of the present application;

Figure 16 is a schematic diagram of the positional relationship between the first coil, the first sleeve and the second sleeve provided by the embodiment of the present application;

Figure 17 is a schematic cross-sectional view of a first coil fixed behind a camera through a first sleeve and a second sleeve provided in an embodiment of the present application.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc. indicate the orientation or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

The terms “first” and “second” are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. The electrical connection mentioned in the embodiments of this application may be a wired connection or a wireless connection.

For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

Cameras are used in many fields such as vehicles, outdoor surveillance, and action cameras. When the camera switches between cold and humid weather or the environment is too cold or hot, the lens group (lens) will fog up. Or, it condenses on the surface of the exposed lens group, forming frost. These fogging or frosting problems will seriously affect the clarity of images captured by the camera and affect the imaging effect of the lens group. This application takes a vehicle as an example for illustration.

As shown in FIG. 1 , an embodiment of the present application provides a vehicle 100 . The vehicle 100 may be a car, a passenger car, a trailer, etc. The vehicle 100 may include a body body 20 . In addition, the above-mentioned vehicle 100 may also include a vehicle-mounted system 10 as shown in FIG. 2 , wherein the vehicle-mounted system 10 may be installed on the vehicle body 20 in FIG. 1 . As shown in FIG. 2 , the vehicle-mounted system 10 may include an electronic control unit (ECU) 1 and a camera assembly 2 . The camera assembly 2 is electrically connected to the electronic control unit 1 . In some embodiments of the present application, the electronic control unit 1 can be installed inside the body body 20 , and the electronic control unit 1 can control the camera assembly 2 , for example, turning on the camera assembly 2 to monitor the environment outside the body body 20 . The image acquisition, or electronic control unit 1 can also receive image data collected from the camera assembly 2, and further display the above image data, thereby increasing the driver's field of view.

Based on this, in order to display the image data collected by the camera assembly 2 , the vehicle 100 may further include a display device electrically connected to the electronic control unit 1 . The above display device may be installed in the vehicle body 20 . The type of the display device is not limited in this application. For example, the display device may include a plasma or digital projection component and a liquid crystal display.

The following is an example of the installation position of the above-mentioned camera assembly 2 . For example, in some embodiments of the present application, the area and adjustment angle of the rearview mirrors installed on the left and right sides of the vehicle body 20 are limited, resulting in a limited view of the outside of the vehicle body observed by the driver through the rearview mirrors. Therefore, in order to observe the rear view of the body body 20, the driver needs to continuously tilt his head to the left and right sides to observe the situation behind the body. This will inevitably distract the driver's attention and make the driving behavior risky. .

Based on this, in order to improve the driver's field of view, the camera assembly 2 of the embodiment of the present application can be installed on at least one of the two rearview mirrors on the left and right sides of the front body of the vehicle 100 (refer to FIG. 1 ). In this way, the rear view of the vehicle 100 can be observed in the body body 20 through the camera assembly 2, and the driver can observe the situation behind the vehicle body without tilting the head, which helps to improve the driver's attention.

The above is an example of the installation position and applicable scenarios of the camera assembly 2 by taking the installation of the camera assembly 2 on the rearview mirrors on the left and right sides of the vehicle body 20 as an example. In other embodiments of the present application, the above-mentioned camera assembly 2 can also be installed on both sides of the rear part of the vehicle body, the rear part of the vehicle body, and the front end of the vehicle body (for example, in a bus, the vehicle body is high and the front end of the vehicle body has a certain blind spot for viewing angles).

In addition, the above description is based on the example in which the camera assembly 2 is installed on the vehicle body 20 . In other embodiments of the present application, the above-mentioned camera assembly 2 can also be applied to other outdoor fields, such as outdoor monitoring systems, traffic supervision systems, property monitoring systems, etc. Or, in other embodiments, the above-mentioned camera assembly 2 can also be applied to a sports camera or an AVM panoramic surveillance imaging system.

The structure and working principle of the above-mentioned electronic control unit 1 and the camera assembly 2 electrically connected to the electronic control unit 1 are described below with examples. For example, in some embodiments of the present application, as shown in FIG. 3 , the above-mentioned camera assembly 2 may include a camera 21 and a heating component 22 capable of heating the camera 21 . The electronic control unit 1 may include an image processor 11 , a microcontroller unit 12 (Microcontroller Unit, MCU) and a power chip 13 . The image processor 11 is electrically connected to the camera 21 and is used to receive electrical signals from the camera 21, generate image data, and obtain the clarity of the image data. The microcontroller 12 is electrically connected to the image processor 11 and is used to issue control instructions if the resolution is less than the resolution threshold. The power chip 13 is electrically connected to the microcontroller 12 and the heating component 22. The power chip 13 is used to provide power to the heating component 22 according to the control instructions.

In this case, the image processor 11 can process the image monitored by the camera 21 to generate image data and send it to the microcontroller 12. The microcontroller 12 can compare the sharpness of the image data with the sharpness threshold. If If the definition is less than the definition threshold, a control instruction is issued to the power chip 13 to supply power to the heating component 22 according to the control instruction, thereby realizing heating of the camera 21 . At this time, the heating method and time can be set according to requirements. For example, the heating time is: 100 milliseconds, 200 milliseconds, 300 milliseconds, etc., which is not limited in this application. If the resolution is greater than or equal to the resolution threshold, no control instructions are issued to the power chip 13 to save power.

In addition, in some embodiments of the present application, the structure of the above-mentioned camera assembly 2, for example, may include a camera 21 and a heating assembly 22. The heating assembly 22 may heat the camera 21, thereby solving the above-mentioned problems. In order to express the technical solution of the present application more clearly, the following uses an application scenario in which the camera 21 is used as a vehicle camera as an example. This application does not limit the type of camera 21, as long as the camera 21 needs to be heated.

The structure of the above-mentioned heating component 22 is illustrated below. For example, in some embodiments of the present application, as shown in FIG. 4 , the heating component 22 may include a first coil 221, a second coil 222 and a heating element 223. , wherein the first coil 221 is disposed on the camera 21 and is electrically connected to the power chip 13, and the power chip 13 can provide changing current. The second coil 222 is disposed on the camera 21 for receiving the magnetic field generated by the first coil 221 and converting it into current. The heating element 223 is electrically connected to the second coil 222 and is used to receive the current generated by the second coil 222 and generate heat to heat the camera 21 .

In this case, the working principle of the first coil 221 and the second coil 222 of the present application is as shown in FIG. 5 , and the power chip 13 can provide changing current to the first coil 221 . For example, the power chip 13 can switch the power supply to provide alternating current to the first coil 221 .

In this case, an alternating current can be passed into the first coil, so that under the action of the changing current, the first coil can generate an alternating magnetic field. In this case, the second coil receives the above-mentioned magnetic field and converts the magnetic energy into electrical energy, thereby generating a changing current in the second coil. The heating element is electrically connected to the second coil, so that the current in the second coil can flow through the heating element. Since the heating element is arranged on the camera, the heat generated by the heating element under the action of the current can heat the camera. heating.

In other embodiments of the present application, the heating component 22 can also be applied alone to devices with cameras such as AVM panoramic imaging systems, electronic rearview mirrors, and driving recorders. It can also be applied to equipment such as outdoor surveillance and action cameras. The specific type of application equipment for the heating component 22 of the present application is not limited, as long as it is an equipment or device with a lens to produce images.

The following is an example of the installation position of the heating element 223. For example, in some embodiments of the present application, the camera 21 may include a lens base 211 and a lens group 212 as shown in Figure 6a. The lens base 211 has a first installation cavity 2111. . The lens group 212 is located in the first installation cavity 2111. The lens group 212 may include multiple lenses. Light is incident from the outside to the light incident side of the lens group and passes through each lens. When there is frost or fogging on the lens, it will affect the transmission path of the light, thereby affecting the imaging. Causes interference, thereby reducing the quality of the captured image.

Based on this, in order to solve the problem of unclear imaging of the lens group 212, in some embodiments of the present application, the first heating element 223 includes a first heating element 223a and a second heating element 223b. As shown in FIG. 6a, the first heating element 223a can be disposed between the lens group 212 and the inner wall of the first mounting cavity 2111, where the inner wall of the first mounting cavity 2111 refers to the side of the first mounting cavity 2111 close to the lens group 212. In other embodiments of the present application, as shown in FIG. 6b , the second heating element 223b can be disposed on the outer wall of the first mounting cavity 2111 (that is, the position of the first mounting cavity 2111 corresponding to the outer surface of the lens holder 211). .

In this case, the heating element 223 can heat the lens group 212 at close range or directly, which helps to improve the heating efficiency of the lens group 212. Moreover, when the heating element 223 is located in the first mounting cavity 2111 of the lens mount 211, The lens holder 211 can have a certain thermal insulation effect on the heating element 223, preventing rapid loss of heat, and does not affect the external aesthetics of the camera 21.

In other embodiments of the present application, the camera 21 may also include an image sensor 213 as shown in Figure 7a. The lens mount 211 also has a second mounting cavity 2112 connected with the first mounting cavity 2111. The image sensor 213 is located in the second installation cavity 2112 and is used to receive light from the lens group 212 and perform photoelectric conversion, thereby enabling the image sensor 213 to generate a corresponding image. However, when the temperature is low or the environment is humid, the image output effect of the image sensor 213 will be affected.

Based on this, in order to solve the problem of poor picture output of the image sensor 213, as shown in FIG. 7a, the first heating element 223a can be disposed between the image sensor 213 and the inner wall of the second installation cavity 2112, wherein the second installation cavity 2112 The inner wall is the side of the second installation cavity 2112 close to the image sensor 213 . In other embodiments of the present application, as shown in FIG. 7b , the second heating element 223b can be disposed on the outer wall of the second mounting cavity 2112 close to the image sensor 213 . The outer wall of the second mounting cavity 2112 refers to the lens mount 211 The outer surface.

In this case, under more stringent temperature conditions, it is also necessary to ensure that the image sensor 213 is within the normal operating temperature range. For example, the image sensor 213 must have an operating temperature of -40°C or above to output images normally. At this time, a heating element 223 can be installed near the image sensor 213. When the ambient temperature is lower than -40°C, the heating element 223 is preheated. After a short period of heating, the operating temperature of the image sensor 213 rises to -40°C. above. Thus, the image sensor 213 can enter the normal working state in advance.

In other embodiments of the present application, the camera 21 may also include a transmission chip 214 as shown in Figure 8a. The transmission chip 214 is located in the second installation cavity 2112 and is electrically connected to the image sensor 213. The first heating element 223a is provided between the transmission chip 214 and the inner wall of the second mounting cavity 2112, where the inner wall of the second mounting cavity 2112 is the side of the second mounting cavity 2112 close to the transmission chip 214. In other embodiments of the present application, as shown in Figure 8b, the second heating element 223b is disposed on the outer wall of the second mounting cavity 2112 close to the transmission chip 214. The outer wall of the second mounting cavity 2112 is outside the lens holder 211. The surface is close to the transmission chip 214. In this case, if the temperature of the transmission chip 214 is too low, the working effect of the transmission chip 214 will also be affected. Therefore, when the temperature is too low, appropriately preheating or heating the transmission chip 214 will help the normal operation of the camera 21 Work.

It should be noted that, in order to increase the heating effect, the first heating element 223a and the second heating element 223b in the above embodiment can also be set at corresponding heating positions at the same time. This application does not limit this. For convenience of explanation, heating will be used in the following. The component 223 is disposed on the outer surface of the lens holder 211 for illustration.

In some embodiments of the present application, as shown in Figure 9 , the image sensor 213 and the transmission chip 214 can be disposed on a substrate 215 (copper clad laminate), or can be respectively disposed on the first substrate as shown in Figure 10 The substrate 2151 and the second substrate 2152, wherein the substrate 215 may include the first substrate 2151 and the second substrate 2152. When there are two substrates 215, the image sensor 213 can be electrically connected to the first substrate 2151, the transmission chip 214 is electrically connected to the second substrate 2152, and there is a distance d between the first substrate 2151 and the second substrate 2152. In this case, the heating element 223 can be disposed between the first substrate 2151 and the second substrate 2152. It can be disposed outside the lens holder 211, or it can be disposed in the second mounting cavity 2112 of the lens holder 211. In this way Later, both the image sensor 213 and the transmission chip 214 can be preheated through the heating element 223 .

In some embodiments of the present application, the camera 21 may also include a connector 216 as shown in FIG. 11 . The connector 216 is used to transmit information from the transmission chip 214 to the vehicle electronic control unit 1 . Due to the low temperature environment, , the contact performance of the connector 216 will deteriorate, therefore, a heating element 223 can be installed at the connector 216 of the lens mount 211. Proper heating of the connector 216 can ensure system transmission stability.

In other embodiments of the present application, the camera 21 may also include other components (for example, infrared filters, dust-proof gaskets, shielding shells, etc., the embodiments of the present application will not list them one by one), and the above are only for the purpose of this application. This application does not limit some of the embodiments of the application. When certain components in the camera 21 require heating, they can be placed close to the components.

In other embodiments of the present application, as shown in Figure 12, there may be multiple heating elements 223 (as shown in Figure 12, two heating elements 223 are taken as an example), and the two heating elements 223 are connected in series with the second coil 222. , wherein a heating element 223 is disposed at the rear end of the camera 21 close to the above-mentioned image sensor 213, transmission chip 214, connector 216, etc. Another heating element 223 can be disposed at the front end of the camera 21 close to the above-mentioned lens group 212. In this case, multiple heating elements 223 can be disposed at positions close to other components in the camera 21 that need to be heated or preheated. . This application does not limit this.

In other embodiments of the present application, the first coil 221 and the heating component 22 can be preset inside the camera 21 when assembling the camera 21 and connected to the camera 21 as an integrated structure according to the requirements. The two can also be separately provided in The inside and outside of the camera 21 are not limited in this application.

The structure of the above-mentioned heating element 223 is illustrated below. In some embodiments of the present application, due to the small size of the camera 21 itself, if a metal body is used as the heating element 223 and is disposed in the camera 21, the metal body is limited. The size and thickness of the body limit the heating effect. In addition, the camera 21 is required to be waterproof and dustproof, and the thermal expansion coefficients of metal bodies and non-metal parts (plastics) are inconsistent, making it difficult to achieve high waterproof and dustproof specifications. Therefore, in some embodiments of the present application, the heating element 223 may be a resistance wire. This application does not limit the type of the resistance wire, and the resistance wire is connected in series with the second coil 222 .

In this case, the resistance wire can be disposed together with the second coil 222 at a position inside or outside the camera 21 that needs to be heated. The second coil 222 can also be connected with multiple resistance wires in series, and the resistance wire can be separately disposed at a position inside or outside the camera 21 that needs to be heated. for location. This application does not limit this. The heating effect of the resistance wire of this application can be set by changing the resistance wire parameters. Compared with the metal body control method, the control method is simple and easy to implement, and the resistance wire is easy to be wound around the inside and outside of the camera 21 and takes up little space. Since the first coil 221 and the second coil 222 are coupled to transmit energy, in order to ensure resonance between the two coils during use, the required operating frequency is relatively fixed.

In other embodiments of the present application, the heating element 223 can be a heating film, and the heating film 223 can be a transparent flexible film, and the transparent flexible film has a certain light transmittance. The transparent flexible film can completely cover the surface of the lens (lens group 212) or be arranged on the edge of the lens. At this time, the camera 21 can also perform monitoring. The heating film 223 can also be disposed inside the camera 21 or on the surface of the camera 21, which is not limited in this application.

For convenience of explanation, the subsequent heating element 223 will be described using a resistance wire as an example. In the related art, the heating effect after the resistance wire is installed can be determined by the system control current, but the control method is single. In some embodiments of the present application, preferably, as shown in Figure 12, the first coil 221 and the second coil The center of 222 can be on the same axis and the two coils are parallel. The coupling distance between the second coil 222 and the first coil 221 is proportional to the energy transfer magnitude. The closer the distance is, the greater the current generated on the first coil 221 is. In other embodiments of the present application, the current on the second coil 222 can also be controlled by adjusting the turn ratio between the first coil 221 and the second coil 222, thereby controlling the heating effect of the resistance wire. In this way, the method of controlling the heating effect of this application is more flexible.

In other embodiments of the present application, the heating component 22 may also include a temperature-controlled resistor 224 as shown in Figure 13. The temperature-controlled resistor 224 is connected in series with the second coil 222 and the resistance wire to achieve intelligent heating. The temperature-controlled resistor 224 may include positive temperature coefficient resistors, negative temperature coefficient resistors, resettable fuses, etc. The working status of the second coil 222 can be indirectly understood by monitoring the difference between the current value on the second coil 222 and the predetermined value. When the resistance wire can be controlled by a resistor with a positive temperature coefficient in series. Due to the positive temperature coefficient resistance, at the beginning, the positive temperature coefficient resistance is small and the current on the loop is large. The greatest amount of heat is generated on the resistance wire. As time goes by, the positive temperature coefficient resistance value gradually becomes larger, the loop current gradually becomes smaller, and the heat generated on the resistance wire gradually decreases.

In this case, the resistance wire is heated with high power when it is started, and then the heating effect decreases. In this way, when the current is generated in the second coil 222 and is started, the resistance wire can be quickly heated until the heating function is turned off. In this way, the heating effect is quickly achieved.

In other embodiments of the present application, a series negative temperature coefficient resistor may also be used in series with the second coil 222 and the resistance wire. Due to the negative temperature coefficient resistor, low-power heating is achieved at startup, and the heating power is gradually increased until the maximum value. In this case, the resistance wire can gradually increase the heating power, which helps to ensure the structural stability of the heated components in the camera 21 and prevents internal damage to the components caused by inconsistent internal thermal expansion coefficients, such as loose parts in the lens and minor parts. displacement and affect the service life of parts, etc.

In other embodiments of the present application, a series delay type self-restoring fuse may also be used in series with the second coil 222 and the resistance wire. The self-restoring fuse has overcurrent and overheating protection and automatic recovery dual functions. When the operating current is greater than the set value of the self-recovery fuse protection, the self-recovery fuse will be disconnected and heating will stop. Achieve fixed heating for a certain time (for example: 100 milliseconds, 200 milliseconds, 300 milliseconds, etc., this application does not limit the time) when the specified current is reached.

The following is an example of how the first coil 221 , the second coil 222 and the resistance wire are arranged on the camera 21 . For example, in some embodiments of the present application, the camera assembly 2 may also include an insulating sleeve 225 as shown in Figure 14 (the insulating sleeve 225 meets the requirements of insulation and can be cold-shrunk and fixed after being heated, both in the present application). protection range), the insulating sleeve 225 may be a thermoplastic sleeve. At this time, when the heating component 22 is disposed outside the camera 21, the first coil 221, the second coil 222 and the resistance wire can be located inside the thermoplastic sleeve and adhered to the outside of the camera 21 by being heated, and the multiple resistance wires can Paste it where it needs to be heated. In other embodiments of the present application, the first coil 221, the second coil 222 and the resistance wire can also be pasted inside the camera 21 through a thermoplastic sleeve. This application does not limit the pasting positions.

In this case, since the thermoplastic sleeve has the characteristics of high-temperature shrinkage, softness, flame retardancy, insulation and corrosion resistance, the thermoplastic sleeve can be heated with a hot air gun (125 degrees Celsius) without changing the internal structure of the camera 21 ) shrinks, and as shown in Figure 15 (which is a schematic cross-sectional view along the A-A direction in Figure 14) the thermoplastic sleeve is placed outside the second coil 222 and fixed on the camera 21. The first coil 221 and the resistance wire can also be fixed outside the camera 21 through this method. Using this fixing method not only makes the installation simple, but also does not affect the imaging quality of the camera 21 without changing the waterproof and dustproof structure of the existing camera 21 . Moreover, the use of thermoplastic sleeves is not limited to the size of the camera 21, and it is easy to realize the heating function of the cameras 21 of various sizes. In other embodiments of the present application, the first coil 221, the second coil 222 and the resistance wire can be fixed on the outside of the camera 21 through other methods or fixed structures.

In other embodiments of the present application, as shown in Figure 16, the thermoplastic sleeve (insulating sleeve 225) may include a first sleeve 2251 and a second sleeve 2252 located within the first sleeve 2251. A coil 221 or heating element 22 is located between the first sleeve 2251 and the second sleeve 2252. In this case, the following is an example of the fixing method of the first coil 221. For example, as shown in FIG. 17, the first coil 221 is fixed on the outside of the camera 21, and the second sleeve 2252 is heated close to the outer wall of the camera 21. The sleeve 2251 is heated and the first coil 221 is adhered to the second sleeve 2252, thereby fixing the first coil 221. In this way, the second sleeve 2252 isolates the camera 21 from the first coil 221, thereby preventing components in the camera 21 from interfering with the magnetic field generated by the first coil 221. The thermoplastic sleeve of this application can also be pasted inside the camera 21, and this application does not limit this. In other embodiments of the present application, the second coil 222 and the resistance wire can also be fixed in this manner, which is not limited by this application.

In other embodiments of the present application, the first coil 221, the second coil 222 and the resistance wire can also be wrapped around the outside of the camera 21 through tape with properties similar to insulating tape, or can be individually inserted into a heat shrink sleeve. Then it is wrapped around the outside of the camera 21 . This application does not limit this.

To sum up, usually the heating device of the camera 21 is installed inside the camera 21. The small size of the camera 21 limits the size and thickness of the heating device. And because the sizes of the cameras 21 are different, heating devices of different sizes need to be matched with the cameras 21 to meet the demand. As can be seen from the above embodiments, the resistance wire of the present application can be installed outside the camera 21 or disposed on the outer surface of the lens group 212 . The heating function of the camera 21 is realized without changing the waterproof and dustproof structure of the existing camera 21 and without affecting the imaging effect of the camera 21. The camera 21 can be installed on different sizes of structures, thus realizing the versatility of different models of the heated camera 21. In addition, in other embodiments of the present application, a shielded electromagnetic field area can be formed outside the camera 21 , so that the changing magnetic field will not leak out, which will improve the receiving intensity of the second coil 222 .

When the camera 21 is used for the vehicle 100, the current on the first coil 221 needs to be powered by the power chip 13. In other embodiments of the present application, the first coil 221 can also be powered by an external power supply, such as sports cameras and outdoor monitoring. Wait for the original power chip 13 to provide power. This application does not limit this. In some embodiments of the present application, if the original power supply chip 13 in the vehicle electronic control unit 1 is used for power supply, it not only saves the cost of an external power supply, but also allows the power supply unit to be controlled through the vehicle electronic control unit 1 . Intelligent, in addition, in order to meet the changing current demand of the first coil 221, a power conversion module can also be connected in series in front of the first coil 221 to meet the current characteristics. In other embodiments of the present application, the power chip 13 can also generate varying currents, which is not limited by the present application.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (11)

1. A camera assembly, characterized in that it includes: Camera; The first coil is set on the camera; A second coil, disposed on the camera, is used to receive the magnetic field generated by the first coil and convert it into a current; A heating element is electrically connected to the second coil, and is used to receive the current generated by the second coil and generate heat to heat the camera. 2. A camera assembly according to claim 1, characterized in that the camera includes: The lens mount has a first mounting cavity; A lens group located in the first installation cavity; Wherein, the heating element is disposed between the lens group and the inner wall of the first mounting cavity, or is disposed on the outer wall of the first mounting cavity. 3. A camera assembly according to claim 1, characterized in that the camera includes: A lens mount having a first mounting cavity and a second mounting cavity connected to the first mounting cavity; A lens group located in the first installation cavity; An image sensor, located in the second installation cavity, is used to receive light from the lens group and perform photoelectric conversion; Wherein, the heating element is disposed between the image sensor and the inner wall of the second mounting cavity, or is disposed on the outer wall of the second mounting cavity close to the image sensor. 4. A camera assembly according to claim 3, characterized in that the camera further includes: The transmission chip is located in the second mounting cavity and is electrically connected to the image sensor. The heating element is disposed between the transmission chip and the inner wall of the second mounting cavity, or is disposed on the second mounting cavity. The outer wall of the installation cavity is close to the transmission chip. 5. A camera assembly according to any one of claims 1 to 4, characterized in that the camera assembly further includes: At least one insulating sleeve, at least one of the first coil, the second coil and the heating element is wrapped in the insulating sleeve; the insulating sleeve is arranged on the camera head. 6. A camera assembly according to claim 5, characterized in that the camera is nested in the insulating sleeve; The insulating sleeve is a thermoplastic sleeve. 7. The camera assembly according to claim 1, wherein the heating element is one or both of a resistance wire and a heating film. 8. A camera assembly according to claim 1, characterized in that the camera assembly further includes a temperature-controlled resistor; the temperature-controlled resistor is connected in series with the heating element. 9. A vehicle-mounted system, characterized by comprising: an electronic control unit and the camera assembly according to any one of claims 1 to 8, the camera assembly being electrically connected to the electronic control unit. 10. A vehicle-mounted system according to claim 9, characterized in that: The electronic control unit includes: An image processor, electrically connected to the camera, used to receive electrical signals from the camera, generate image data, and obtain the clarity of the image data; A microcontroller, electrically connected to the image processor, used to issue control instructions if the resolution is less than the resolution threshold; A power chip is electrically connected to the microcontroller and the first coil in the camera assembly, and the power chip is used to supply power to the first coil according to the control instruction. 11. A vehicle, characterized by comprising a body body and the vehicle-mounted system according to claim 9 or 10, the vehicle-mounted system being installed on the body body.