Antistatic vehicle-mounted camera and vehicle

Abstract

The invention discloses an anti-static vehicle-mounted camera and a vehicle, and the anti-static vehicle-mounted camera comprises a camera body which is used for collecting and processing an image; the PCB is fixedly connected with the camera body; and the conductive shell is used for accommodating the camera body and the PCB. In the PCB, the grounding structure is a circuit ground wire or a circuit ground plane; the power connection structure electrically connected with the conductive shell and the grounding structure are arranged at an interval; the coupling capacitor and the electrostatic suppression antenna are connected in series and are electrically connected between the power connection structure and the grounding structure; the electrostatic suppression antenna comprises a first coupling part and a second coupling part, and the first coupling part and the second coupling part can counteract at least part of electrostatic charges through electric field coupling. According to the anti-static vehicle-mounted camera, by combining a specially-arranged electrostatic coupling counteracting structure and an electrostatic step-by-step suppression mechanism, the reliability and the safety of electrostatic protection are effectively improved, the influence of electrostatic discharge on the yield of the anti-static vehicle-mounted camera can be reduced, the service life of a product can be prolonged, and the safety performance of an automobile can be improved.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to an anti-static vehicle-mounted camera and a vehicle. Background Art

[0002] Electrostatic discharge (ESD) is a common objective natural phenomenon, which refers to the charge transfer caused when objects with different electrostatic potentials are close to each other or in direct contact. In the actual process of production, assembly, testing, storage, and transportation of camera products, static electricity is easily accumulated in the human body, instruments, or equipment, and the camera components themselves will also accumulate static electricity. When employees touch camera products, very high static voltage is instantly generated, up to several thousand volts or even tens of thousands of volts, forming an electrostatic discharge path for the camera products.

[0003] In the related art, the shell of the vehicle-mounted camera is usually made of metal material, and the metal shell is in direct contact with the PCB board, which can easily cause the components of the PCB (Printed Circuit Board) to be damaged by electrostatic discharge, thereby directly reducing the yield rate during the production process, affecting the service life of the product during use, and even affecting the safety performance of the car.

[0004] Based on this, how to design a vehicle-mounted camera that can effectively resist static electricity has become a technical problem that needs to be urgently solved in the industry. Summary of the invention

[0005] In order to solve at least one problem existing in the prior art, the purpose of the present application is to provide an anti-static vehicle-mounted camera and vehicle, which, combined with a specially designed electrostatic coupling cancellation structure and an electrostatic gradual suppression mechanism, effectively improves the reliability and safety of electrostatic protection, thereby not only reducing the impact of electrostatic release on the yield of anti-static vehicle-mounted cameras, but also helps to extend the service life of the product and is beneficial to improving the safety performance of the vehicle.

[0006] To achieve the above purpose, the anti-static vehicle-mounted camera provided by the present application includes:

[0007] The camera body is used to collect and process images;

[0008] A PCB board, fixedly connected to the camera body; and,

[0009] A conductive housing, used for accommodating the camera body and the PCB board;

[0010] Wherein, the PCB board comprises:

[0011] A grounding structure is a circuit ground wire or circuit ground plane;

[0012] A power connection structure electrically connected to the conductive housing is spaced apart from the grounding structure; and

[0013] The coupling capacitor and the electrostatic suppression antenna are connected in series and connected between the power connection structure and the grounding structure; and the electrostatic suppression antenna includes a first coupling part and a second coupling part, and the electric field coupling between the first coupling part and the second coupling part can offset at least part of the electrostatic charge.

[0014] Optionally, the first coupling portion and the second coupling portion are arranged at intervals, the first coupling portion is provided with a first sawtooth arrangement structure facing the second coupling portion, and the second coupling portion is provided with a second sawtooth arrangement structure facing the first coupling portion;

[0015] The static electricity suppression antenna further includes two connection parts, and the two connection parts are respectively electrically connected between the end of the first sawtooth arrangement structure and the corresponding end of the second sawtooth arrangement structure, so that the static electricity suppression antenna body has a frame-shaped structure.

[0016] Further optionally, the first sawtooth arrangement structure and the second sawtooth arrangement structure are symmetrically arranged; the direction of the symmetry axis of the symmetrical arrangement is parallel to the extension direction of the first sawtooth arrangement structure and the extension direction of the second sawtooth arrangement structure.

[0017] Optionally, the PCB board at least includes an insulating layer located on the upper surface of the PCB board and a conductive layer covered under the insulating layer; the static electricity suppression antenna is formed by opening a window in the insulating layer to expose the first conductive layer.

[0018] Optionally, a first end of the coupling capacitor is electrically connected to the power connection structure through a copper foil wire, and a second end of the coupling capacitor is electrically connected to a first end of the electrostatic suppression antenna through a copper foil wire.

[0019] Optionally, the second end of the electrostatic suppression antenna is connected to the power connection structure through a copper foil wire.

[0020] Optionally, the power connection structure includes:

[0021] A positioning hole is provided on the PCB board, a conductive layer is provided on the outer edge of the positioning hole, and the conductive layer is electrically connected to the first end of the coupling capacitor;

[0022] A conductive connector is used to fix the PCB board to the conductive shell through the positioning hole, and to form an electrical connection with the conductive layer and the conductive shell.

[0023] Further optionally, the positioning hole is a screw hole, and the conductive connecting member is a conductive screw; or,

[0024] The positioning hole is a snap-fit ​​hole, and the conductive connecting piece is a conductive buckle positioned on the conductive shell.

[0025] To achieve the above-mentioned purpose, the present application also provides a vehicle, including the anti-static vehicle-mounted camera as described above.

[0026] The present application discloses an anti-static vehicle-mounted camera and vehicle, wherein the vehicle-mounted camera is provided with a conductive shell for accommodating the camera body and the PCB board; and the conductive shell is electrically connected to the power connection structure of the PCB board, and is spaced apart from the grounding structure of the PCB board; and a coupling capacitor and an electrostatic suppression antenna are connected in series between the power connection structure and the grounding structure; and a first coupling part and a second coupling part are provided on the electrostatic suppression antenna, and the electric fields formed by the two parts can be coupled to offset at least part of the electrostatic charge. Thus, combined with the specially designed electrostatic coupling offset structure and the electrostatic gradual suppression mechanism, the reliability and safety of electrostatic protection are effectively improved, thereby not only reducing the impact of electrostatic discharge on the yield rate of anti-static vehicle-mounted cameras, but also helping to extend the service life of the product and improve the safety performance of the vehicle.

[0027] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0029] Figure 1 It is a structural block diagram of an anti-static vehicle-mounted camera according to an embodiment of the present application;

[0030] Figure 2 A schematic diagram of a partial structure of a PCB board according to an embodiment of the present application;

[0031] Figure 3 for Figure 2 Schematic diagram of the structure of the electrostatic suppression antenna;

[0032] Figure 4 Schematic diagram of magnetic field distribution of a sawtooth pair according to an embodiment of the present application.

[0033] Specifically, the following reference numerals are included:

[0034] Anti-static vehicle camera-1000; camera body-200; PCB board-400; grounding structure-410; power connection structure-420; positioning hole-421; first conductive layer-422; coupling capacitor-430; static suppression antenna-440; first coupling part-441; second coupling part-442; connecting part-443; sawtooth pair-444; copper foil wire-450; conductive shell-600. DETAILED DESCRIPTION

[0035] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0036] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0037] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0038] like Figure 1-Figure 4 As shown, the anti-static vehicle-mounted camera 1000 includes: a camera body 200 , a PCB board 400 and a conductive shell 600 .

[0039] The camera body 200 is used to collect and process images. In a specific example, the camera body 200 may include components such as a lens, an image sensor, and an image processing chip.

[0040] The conductive housing 600 is used to accommodate the camera body 200 and the PCB board 400. The conductive housing 600 is made of a conductive material, and can be a metal housing.

[0041] The PCB board 400 is fixedly connected to the camera body 200 . The PCB board 400 includes: a grounding structure 410 , a power connection structure 420 , a coupling capacitor 430 and an electrostatic suppression antenna 440 .

[0042] It is understandable that the grounding structure 410 is preferably a circuit ground plane, but may also be a circuit ground line, and the present application does not impose any specific limitation on this.

[0043] The power connection structure 420 is connected to the conductive housing 600 and is spaced apart from the grounding structure 410. It should be noted that the spaced apart arrangement here means that there is no direct electrical connection between the power connection structure 420 and the grounding structure 410.

[0044] The coupling capacitor 430 and the electrostatic suppression antenna 440 are electrically connected between the power connection structure 420 and the ground structure 410. The first end of the coupling capacitor 430 is electrically connected to the power connection structure 420, and the second end is electrically connected to the first end of the electrostatic suppression antenna 440; the second end of the electrostatic suppression antenna 440 is electrically connected to the power connection structure 420. In addition, the electrostatic suppression antenna 440 includes a first coupling portion 441 and a second coupling portion 442, and the first coupling portion 441 and the second coupling portion 442 can offset at least part of the electrostatic charge through electric field coupling.

[0045] Preferably, the first end of the coupling capacitor 430 is electrically connected to the power connection structure 420 through the copper foil wire 450, and the second end is electrically connected to the first end of the electrostatic suppression antenna 440 through the copper foil wire 450. Further, the second end of the electrostatic suppression antenna 440 is electrically connected to the power connection structure 420 through the copper foil wire 450. This helps to improve the beneficial effect of the ESD gradual suppression mechanism and further improves the reliability and safety of electrostatic protection.

[0046] The working principle of the anti-static vehicle camera 1000 of the embodiment of the present application is as follows: when external static electricity contacts the conductive shell 600 of the anti-static vehicle camera 1000, it is directly released on the conductive shell 600. Since the conductive shell 600 is electrically connected to the power connection structure 420 of the PCB board 400, the ESD charge on the conductive shell 600 is transmitted to the power connection structure 420, and the ESD charge is released to the coupling capacitor 430 through the copper foil wire 450. After receiving the ESD charge, the coupling capacitor 430 performs coupling processing to achieve the first step of electrostatic suppression, and transmits the electrostatic charge coupled to the second end of the capacitor to the electrostatic suppression antenna 440.

[0047] After receiving the ESD charge, the electrostatic suppression antenna 440 transfers the ESD charge to the first coupling part 441 and the second coupling part 442 of the electrostatic suppression antenna 440. After the ESD charge passes through the first coupling part 441 and the second coupling part 442, an electric field and a magnetic field are generated. The electric fields of the first coupling part 441 and the second coupling part 442 are coupled to each other, so that the magnetic field lines between the two tend to cancel each other out. In addition, the stronger the ESD charge energy, the tighter the coupling between the first coupling part 441 and the second coupling part 442, and the more magnetic lines of force that cancel each other out. Therefore, the antenna transmission effect formed by the first coupling part 441 and the second coupling part 442, the ESD charges between the opposite ends of the two cancel each other out, and the second step of electrostatic suppression is achieved, which can consume most of the ESD charge energy.

[0048] After the ESD charge is processed by the electrostatic suppression antenna 440, there may be residual weak ESD charge. The residual ESD charge is conducted to the ground structure 410 through the copper foil wire 450 to achieve complete release of the ESD charge.

[0049] Therefore, combined with the specially designed electrostatic coupling cancellation structure and the electrostatic gradual suppression mechanism, the reliability and safety of electrostatic protection are effectively improved, which not only reduces the impact of electrostatic discharge on the yield of anti-static vehicle cameras, but also helps to extend the service life of the product and improve the safety performance of the vehicle.

[0050] It is understandable that the present application does not impose any specific restrictions on the specific structures of the first coupling portion 441 and the second coupling portion 442 , as long as the charges transferred by the coupling capacitor 430 can achieve mutual coupling cancellation.

[0051] In the present application embodiment, Figure 3 As shown, the first coupling portion 441 and the second coupling portion 442 are arranged at intervals, the first coupling portion 441 is provided with a first sawtooth arrangement structure facing the second coupling portion 442, and the second coupling portion 442 is provided with a second sawtooth arrangement structure facing the first coupling portion 441, thereby forming a plurality of sawtooth pairs 444. The static suppression antenna 440 further includes two connecting portions 443, which are respectively electrically connected between the ends of the first sawtooth arrangement structure and the corresponding ends of the second sawtooth arrangement structure, so that the main body of the static suppression antenna 440 has a frame-shaped structure.

[0052] In a specific example, Figure 3 As shown, the first coupling portion 441 and the second coupling portion 442 are located on the left and right sides of the frame structure, the zigzag arrangement structures of the two are opposite and spaced apart, and the upper ends of the two are electrically connected through a connecting portion 443 and the lower ends are electrically connected through another connecting portion 443.

[0053] Preferably, the first sawtooth arrangement structure and the second sawtooth arrangement structure are symmetrically arranged; the symmetrical axis direction is parallel to the extension direction of the first sawtooth arrangement structure and the extension direction of the second sawtooth arrangement structure. The electric fields of the first sawtooth arrangement structure and the second sawtooth arrangement structure are coupled to each other, so that the magnetic field distribution between each sawtooth pair 444 is as follows: Figure 4 Through this preferred design, the magnetic field lines of force between the first sawtooth arrangement structure and the second sawtooth arrangement structure can be more effectively offset, which helps to further improve the reliability and safety of electrostatic protection.

[0054] In the embodiment of the present application, the PCB board 400 at least includes an insulating layer located on the upper surface of the PCB board 400 and a conductive layer covered under the insulating layer; the static suppression antenna 440 is formed by opening a window in the insulating layer to expose the first conductive layer 422. This structure does not require additional antenna components, is easy to implement, has high reliability, and is conducive to cost control.

[0055] It is understandable that the electrostatic suppression antenna of the present application is not limited to the above-mentioned specific window-opening copper-exposed structure, and may also be other additional antenna components with electrostatic coupling pairs.

[0056] In the present application embodiment, Figure 2 As shown, the electrical connection structure 420 may include a positioning hole 421 and a conductive connector (not shown in the figure). Among them, the positioning hole 421 is opened on the PCB board 400, and the outer edge of the positioning hole 421 is provided with the above-mentioned first conductive layer 422, and the first conductive layer 422 is electrically connected to the first end of the coupling capacitor 430. The conductive connector fixes the PCB board 400 and the conductive shell 600 through the positioning hole 421. And the conductive connector forms an electrical connection with the conductive layer 422 and the conductive shell 600. As a result, the electrical connection structure 420 takes into account the realization of the electrical connection and mechanical connection between the PCB board 400 and the conductive shell 600, integrates functionality, and helps to save space and reduce the number of components.

[0057] As an example, the positioning hole 421 is a screw hole, and the corresponding conductive connecting member is a conductive screw.

[0058] As another example, the positioning hole 421 is a snap-fit ​​hole, and the corresponding conductive connecting piece is a conductive buckle positioned on the conductive housing 600 .

[0059] In summary, the anti-static vehicle-mounted camera of the embodiment of the present application is provided with a conductive shell that accommodates the camera body and the PCB board; and is electrically connected to the conductive shell through the power connection structure of the PCB board, and is spaced apart from the grounding structure of the PCB board; and is connected in series between the power connection structure and the grounding structure through a coupling capacitor and an electrostatic suppression antenna; and the first coupling part and the second coupling part are provided on the electrostatic suppression antenna, and the electric fields formed by the two parts can be coupled to offset at least part of the electrostatic charge. Therefore, combined with the specially designed electrostatic coupling offset structure and the electrostatic gradual suppression mechanism, the reliability and safety of electrostatic protection are effectively improved, thereby not only reducing the impact of electrostatic discharge on the yield of the anti-static vehicle-mounted camera, but also helping to extend the service life of the product and improve the safety performance of the car.

[0060] The present application also provides a vehicle, which includes the anti-static vehicle-mounted camera in the above embodiment.

[0061] It should be noted that the concepts such as “first” and “second” mentioned in this application are only used to distinguish different structures, and are not used to limit the order, interdependence or relative importance of the functions performed by these structures.

[0062] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more"; "plurality" should be understood as two or more.

[0063] In the description of the present application, it should be noted that the relationship between structures should be understood in a broad sense. For example, the orientations or positional relationships indicated by "upper", "lower", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do 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, they cannot be understood as limitations on the present application.

[0064] It should be noted that in the drawings, the sizes of layers, regions, components and their relative sizes may be exaggerated for clarity. The same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions.

[0065] It should be understood that when a structure or layer is referred to as being "on," "adjacent to," "connected to" or "coupled to" other components or layers, it can be directly on, adjacent to, connected or coupled to the other components or layers, or there may be intervening components or structures.

[0066] Those skilled in the art can understand that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-static vehicle-mounted camera, characterized in that: include, The camera body is used to collect and process images; A PCB board, fixedly connected to the camera body; and, A conductive housing, used for accommodating the camera body and the PCB board; Wherein, the PCB board comprises: A grounding structure is a circuit ground wire or circuit ground plane; A power connection structure electrically connected to the conductive housing is spaced apart from the grounding structure; and The coupling capacitor and the electrostatic suppression antenna are connected in series and electrically connected between the power connection structure and the grounding structure; and the electrostatic suppression antenna includes a first coupling part and a second coupling part, and the electric field coupling between the first coupling part and the second coupling part can offset at least part of the electrostatic charge.

2. The anti-static vehicle-mounted camera according to claim 1, characterized in that: The first coupling portion and the second coupling portion are arranged at intervals, the first coupling portion is provided with a first sawtooth arrangement structure facing the second coupling portion, and the second coupling portion is provided with a second sawtooth arrangement structure facing the first coupling portion; The static electricity suppression antenna further includes two connection parts, and the two connection parts are respectively electrically connected between the end of the first sawtooth arrangement structure and the corresponding end of the second sawtooth arrangement structure, so that the static electricity suppression antenna body has a frame-shaped structure.

3. The anti-static vehicle-mounted camera according to claim 2, characterized in that: The first sawtooth arrangement structure and the second sawtooth arrangement structure are symmetrically arranged; the direction of the symmetry axis of the symmetrical arrangement is parallel to the extension direction of the first sawtooth arrangement structure and the extension direction of the second sawtooth arrangement structure.

4. The anti-static vehicle-mounted camera according to claim 2, characterized in that: The PCB board at least includes an insulating layer located on the upper surface of the PCB board and a conductive layer covered under the insulating layer; the static electricity suppression antenna is formed by opening a window in the insulating layer to expose the first conductive layer.

5. The anti-static vehicle-mounted camera according to claim 1, characterized in that: The first end of the coupling capacitor is electrically connected to the power connection structure through a copper foil wire, and the second end of the coupling capacitor is electrically connected to the first end of the electrostatic suppression antenna through a copper foil wire.

6. The anti-static vehicle-mounted camera according to claim 1, characterized in that: The second end of the static electricity suppression antenna is connected to the power connection structure through a copper foil wire.

7. The anti-static vehicle-mounted camera according to claim 1, characterized in that: The power connection structure includes: A positioning hole is provided on the PCB board, a conductive layer is provided on the outer edge of the positioning hole, and the conductive layer is electrically connected to the first end of the coupling capacitor; A conductive connector is used to fix the PCB board to the conductive shell through the positioning hole; and to form an electrical connection with the conductive layer and the conductive shell.

8. The anti-static vehicle-mounted camera according to claim 7, characterized in that: The positioning hole is a screw hole, and the conductive connecting piece is a conductive screw; or, The positioning hole is a snap-fit ​​hole, and the conductive connecting piece is a conductive buckle positioned on the conductive shell.

9. The anti-static vehicle-mounted camera according to any one of claims 1 to 8, characterized in that: The capacitance range of the coupling capacitor is 1nF to 10nF.

10. A vehicle, characterized in that: It comprises the anti-static vehicle-mounted camera as described in any one of claims 1 to 9.

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