CN216774875U

CN216774875U - Vehicle-mounted Ethernet camera with ESD interference resistance

Info

Publication number: CN216774875U
Application number: CN202220441950.8U
Authority: CN
Inventors: 肖文平; 杨俊�; 谭群辉
Original assignee: Shanghai Hinge Electronic Technologies Co Ltd
Current assignee: Shanghai Hinge Electronic Technologies Co Ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-06-17
Anticipated expiration: 2032-03-02

Abstract

The utility model provides a vehicle-mounted Ethernet camera with ESD interference resistance, which comprises: the electronic device comprises a lens body, a front cover shell, a metal piece, a PCBA circuit board and a rear cover shell, wherein the lens body is arranged in the front cover shell, the metal piece is close to the tail end of the lens body and is arranged in the front cover shell, and the metal piece is provided with a through hole; the PCBA circuit board is close to the metal piece and is arranged in the front cover shell, and the PCBA circuit board and the metal piece are connected with the front cover shell through bolts; the rear cover shell is connected with the front cover shell through a bolt connecting mechanism. According to the utility model, the metal piece is arranged between the bottom of the lens body and the PCBA circuit board, namely the shielding cover is covered above the PCBA, and then the PCBA and the metal sheet are locked on the front cover shell through the screws to form a whole, so that static electricity on the lens barrel can be effectively and directly led into the shell and then led away through the ground wire, and direct interference or damage of the static electricity on an optical element is effectively protected.

Description

Vehicle-mounted Ethernet camera with ESD interference resistance

Technical Field

The utility model relates to a vehicle-mounted Ethernet camera, in particular to a vehicle-mounted camera with ESD interference resistance.

Background

With the development and progress of technology in recent years, the automobile industry is promoted to develop forward, and people put forward higher and more requirements on the intellectualization, comfort and safety of automobiles. The vehicle-mounted camera records related images inside and outside the vehicle in real time during the movement of the vehicle, and the related information of the vehicle can be obtained by extracting the images and analyzing and processing the images, so that a driver is reminded to take measures or automatically control the vehicle to execute corresponding behaviors, and dangerous accidents are avoided. However, compared with a general camera, the vehicle-mounted camera has a complex use environment, so that the design of a lens of the general vehicle-mounted camera is basically that a metal lens barrel is adopted and the surface of the lens is anodized, and the influence of environmental variation on the optical lens is reduced. However, the camera is exposed to the outside, and particularly, the lens is very sensitive to ESD, and the functional failure or the restart of the camera is easily caused by static electricity.

SUMMERY OF THE UTILITY MODEL

Based on the defects existing in the prior art, the utility model provides a vehicle-mounted Ethernet camera with ESD interference resistance, which at least comprises: the lens comprises a lens body, a front cover shell, a metal piece, a PCBA circuit board and a rear cover shell, wherein the lens body is arranged in the front cover shell, the metal piece is close to the tail end of the lens body and is arranged in the front cover shell, and the metal piece is provided with a through hole;

the PCBA circuit board is close to the metal piece and is arranged in the front cover shell, and the PCBA circuit board and the metal piece are connected with the front cover shell through a first metal connecting mechanism;

the rear cover shell is connected with the front cover shell through a second metal connecting mechanism.

A vehicle-mounted Ethernet camera with ESD interference resistance is further provided, optionally, a lens is arranged at the front end of a lens body, and the tail end of the lens body is in an inverted trapezoidal cylinder shape;

the inside screw thread that is equipped with of protecgulum shell, the camera lens body passes through threaded connection protecgulum shell.

A vehicle-mounted Ethernet camera with ESD interference resistance can be further selected, and a layer of anode oxidation resistant film is coated on the inner side and the outer side of a front cover shell.

A vehicle-mounted Ethernet camera with ESD interference resistance can be further selected, and comprises a metal piece, wherein the upper end of a through hole of the metal piece is an inverted trapezoidal cylinder;

the lower end of the through hole of the metal piece is in an original cylindrical shape, so that the optical fiber is led into the PCBA from the lower end of the through hole;

the upper end of the through hole of the metal piece is an inverted trapezoidal cylinder;

a vehicle-mounted Ethernet camera with ESD interference resistance is further optional, wherein a shell of a rear cover is a cylinder, and a through hole is formed in the shell;

the wire harness is connected into a connector in the PCBA circuit board through the through hole, and a control command is transmitted to the camera or an image signal of the camera is acquired.

An on-vehicle ethernet camera with anti-ESD interference, further optionally, the first metal connection mechanism comprises: a bolt or plug;

the second metal connection structure includes: a bolt or plug;

the utility model provides a vehicle-mounted Ethernet camera with anti ESD interference, further can select, the pencil is equipped with external static wire, and the static wire is connected with back lid shell electricity for lead out the static on the back lid shell.

A vehicle-mounted Ethernet camera with ESD interference resistance is further provided, and a waterproof sealing ring is arranged at the joint of a lens body and a front cover shell;

and a waterproof sealing ring is arranged at the joint of the front cover shell and the rear cover shell.

A vehicle-mounted Ethernet camera with ESD interference resistance, further optionally, the PCBA circuit board is provided with an image sensor, an ISP image processor and an Ethernet PHY connector;

the ISP image processor is respectively connected with the image sensor and the Ethernet PHY;

the image sensor is connected with the ISP image processor through a CSI interface;

the ISP image processor is connected with the image sensor through an IC interface and an I/O interface;

the lens on the lens body focuses outside light and then converges the outside light into the image sensor, and the image sensor converts the light signal into an image signal and then inputs the image signal into the ISP image processor for processing.

An on-vehicle ethernet camera with anti-ESD interference, further optionally, the PHY chip of the ethernet at least includes an ethernet PHY chip of an electrical interface of 1G or 10G;

or 10G fiber ethernet PHY chips;

the ethernet PHY chip is implemented based on a dedicated ASIC chip or based on an FPGA chip.

A vehicle-mounted Ethernet camera with ESD interference resistance is further provided, and the transmission protocol of an Ethernet PHY chip is based on an IEEE1722 AVTP audio and video transmission protocol.

Has the advantages that:

in the technical scheme provided by the utility model, the lens body, the front cover shell and the rear cover shell are made of metal materials, and the bottom of the lens cone adopts a design similar to an inverted circular truncated cone. A metal piece is put between the bottom of the lens body and the PCBA, namely a shielding cover is covered above the PCBA, then the PCBA and the metal piece are locked on the front cover shell through screws to form a whole, so that static electricity on the lens barrel can be effectively and directly led into the shell, and direct interference or damage of the static electricity on an optical element is effectively protected. Meanwhile, the metal sheet is synchronously designed in a manner similar to an inverted circular truncated cone and is matched with the bottom structure of the lens barrel body, so that the bottom of the lens barrel can be effectively fixed and focused, the position deviation of the lens barrel is reduced, and the production yield of products and the stability of the products are improved.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is a schematic cross-sectional structural diagram of a vehicle-mounted ethernet camera according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of another vehicle-mounted ethernet camera according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a metal part structure in the vehicle-mounted ethernet camera according to an embodiment of the present invention.

Fig. 4 is a structural diagram of electronic components in the PCBA circuit according to an embodiment of the utility model.

Detailed Description

For a more clear understanding of the technical features, objects, and effects herein, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout. For the sake of simplicity, the drawings are schematic representations of relevant parts of the utility model and are not intended to represent actual structures as products. In addition, for simplicity and clarity of understanding, only one of the components having the same structure or function is schematically illustrated or labeled in some of the drawings.

The term "connected" in the present invention may include direct connection, indirect connection, communication connection, and electrical connection, unless otherwise specified.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, values, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, values, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items

The utility model provides a vehicle-mounted Ethernet camera with ESD interference resistance, which at least comprises the following components in detail with reference to fig. 1 to 4:

the electronic device comprises a lens body 100, a front cover shell 200, a metal piece 300, a PCBA circuit board 500 and a rear cover shell 700, wherein the lens body 100 is installed in the front cover shell 200, the metal piece 300 is close to the tail end of the lens body 100 and is installed in the front cover shell 200, and the metal piece 300 is provided with a through hole;

the PCBA circuit board 500 is closely adjacent to the metal piece 300 and is installed in the front cover shell 200, and the PCBA circuit board 500 and the metal piece 300 are connected with the front cover shell 200 through a first metal connecting mechanism 600;

the rear cover case 700 is connected to the front cover case 200 by a second metal connection mechanism 800.

Specifically, the lens body, the front cover housing and the rear cover housing are made of metal materials and have conductivity, but the front cover housing and the rear cover housing need to be subjected to surface treatment, otherwise, after being exposed in air for a long time, the surfaces of the front cover housing and the rear cover housing are oxidized and corroded, so that the camera cannot be waterproof and dustproof. However, in order to save cost, manufacturers usually immerse the front cover shell and the rear cover shell in the oxidation tank as a whole, and if only the outer layer is made, the inner layer needs to be shielded, so that the cost is increased greatly, and the manufacturers cannot bear the cost. This is to make it impossible to conduct electricity due to the anodized layer coated on the surface even if the front cover case and the rear cover case are made of a metal material. Therefore, after entering the lens body, external static electricity cannot be rapidly conducted away by the lens body, and the static electricity is conducted to the image sensor in the PCBA circuit board through the lens body, so that imaging of the camera is greatly interfered, and the image sensor can be seriously damaged. In order to solve the problem, in the present embodiment, by providing the metal component 300, the metal component 300 is electrically connected to the lens body 100, and the PCBA circuit board 500 and the bezel housing 200 are connected by the first metal connection mechanism 600, so that the static electricity on the lens body 100 is cyclically conducted away. The lens is prevented from being damaged.

The front end of the lens body 100 is provided with a lens, and the tail end of the lens body 100 is in the shape of an inverted trapezoidal truncated cone;

the front cover housing 200 is internally provided with internal threads, and the lens body 100 is provided with external threads to be connected to the front cover housing 200 through threads.

The lens of the lens body 100 may be a fisheye lens or a spherical lens, and a large viewing angle can be obtained through the fisheye lens and the spherical lens.

A layer of anode oxidation resistant film is coated on the inner side and the outer side of the front cover shell 200;

referring to fig. 3, the upper end 301 of the through hole of the metal piece 300 is an inverted trapezoidal cylinder;

the lower end 302 of the through hole of the metal piece 300 is cylindrical, so that the optical fiber is guided into the PCBA 500 from the lower end 302 of the through hole;

the inverted trapezoidal truncated cone at the upper end 301 of the through hole of the metal piece 300 is tightly connected with the side surface of the inverted trapezoidal truncated cone at the tail end of the lens body 100, so that static electricity of the lens body 100 can be led away circularly.

In addition, optical focusing in the camera is a big difficulty in manufacturing, and the normal and stable work of the camera is directly influenced by accurate focusing and firm fixation. The lens body 100 and the PCBA circuit board 500 are firmly tightened on the front cover case 200 by the metal member 300, and the focusing accuracy can be improved. When receiving vibrations influence in the automobile driving process, on-vehicle camera also can possess better formation of image effect.

Specifically, the rear cover housing 700 is a cylinder, and a through hole is formed inside the rear cover housing;

the wire harness 900 is connected to a connector in the PCBA circuit board 500 through a through hole, and transmits a control command to the camera or acquires an image signal of the camera.

The harness 900 is an ethernet harness, and employs a pair of unshielded twisted pairs or a plurality of pairs of unshielded twisted pairs; if the ethernet PHY connector is provided with a fiber interface, the ethernet harness is a fiber transmission medium.

Specifically, in order to rapidly conduct away static electricity, a ground wire may be added to the ethernet harness, and the ground wire is electrically connected to the rear cover housing 700, specifically, by welding or by contact connection. The wire harness 900 is provided with an external electrostatic wire electrically connected to the rear cover case 700 for guiding out the static electricity on the rear cover case 700.

The first metal connection mechanism 600 includes: a bolt or plug; the second metal connection structure 800 includes:

a bolt or plug;

a waterproof sealing ring is arranged at the joint of the lens body 100 and the front cover shell 200;

the joint of the front cover shell 200 and the rear cover shell 700 is provided with a waterproof sealing ring.

The PCBA circuit board 500 is provided with an image sensor 400, an ISP image processor and an ethernet PHY connector;

the ISP image processor is connected to the image sensor 400 and the ethernet PHY connector, respectively;

the lens on the lens body 100 focuses outside light and then converges the light into the image sensor 400, and the image sensor 400 converts the light signal into an image signal and then inputs the image signal into an ISP image processor for processing.

The PHY chip of the Ethernet at least comprises an Ethernet PHY chip of an electrical interface of 1G or 10G;

or 10G fiber ethernet PHY chips;

The transmission protocol of the Ethernet PHY chip is based on the IEEE1722 AVTP audio and video transmission protocol.

What has been described above is only a preferred embodiment of the present invention, and the present invention is not limited to the above examples. It is clear to those skilled in the art that the form in this embodiment is not limited thereto, and the adjustable manner is not limited thereto. It is to be understood that other modifications and variations directly derivable or suggested to one skilled in the art without departing from the basic idea of the present invention are to be considered within the scope of protection of the present invention.

Claims

1. An on-vehicle ethernet camera with anti-ESD interference, characterized by at least comprising: the electronic device comprises a lens body (100), a front cover shell (200), a metal piece (300), a PCBA circuit board (500) and a rear cover shell (700), wherein the lens body (100) is installed in the front cover shell (200), the metal piece (300) is close to the tail end of the lens body (100) and installed in the front cover shell (200), and the metal piece (300) is provided with a through hole;

the PCBA circuit board (500) is close to the metal piece (300) and is arranged in the front cover shell (200), and the PCBA circuit board (500) and the metal piece (300) are connected with the front cover shell (200) through a first metal connecting mechanism (600);

the rear cover shell (700) is connected with the front cover shell (200) through a second metal connecting mechanism (800).

2. The vehicular ethernet camera with ESD interference resistance according to claim 1, wherein the lens body (100) is provided with a lens at a front end thereof, and the shape of the end of the lens body (100) is an inverted trapezoidal cylinder;

the front cover shell (200) is internally provided with threads, and the lens body (100) is connected with the front cover shell (200) through the threads.

3. The vehicular ethernet camera with ESD interference resistance according to claim 1, wherein the front cover housing (200) is coated with an anodic oxidation resistant film on both inner and outer sides.

4. The vehicular Ethernet camera with ESD interference resistance of claim 1, wherein the through hole upper end (301) of the metal piece (300) is in the shape of an inverted trapezoidal cylinder;

the lower end (302) of the through hole of the metal member (300) is cylindrical, so that the optical fiber is guided into the PCBA (500) from the lower end (302) of the through hole.

5. The vehicular ethernet camera with ESD interference resistance according to claim 1, wherein the rear cover housing (700) is a cylinder with a through hole inside;

the wire harness (900) is connected to a connector in the PCBA circuit board (500) through the through hole, and a control command is transmitted to the camera or an image signal of the camera is acquired.

6. The vehicular ethernet camera with ESD interference rejection according to claim 1, wherein the first metal connection mechanism (600) comprises: a bolt or plug;

the second metal connection mechanism (800) includes: a bolt or a latch.

7. The vehicular ethernet camera with ESD interference resistance according to claim 5, wherein the wiring harness (900) is provided with an external static electricity conducting wire, and the static electricity conducting wire is electrically connected with the rear cover housing (700) for conducting out the static electricity on the rear cover housing (700).

8. The vehicular ethernet camera with ESD interference resistance according to claim 1, wherein a waterproof sealing ring is disposed at the joint of the lens body (100) and the front cover housing (200);

a waterproof sealing ring is arranged at the joint of the front cover shell (200) and the rear cover shell (700).

9. The vehicular ethernet camera with ESD interference resistance according to claim 1, wherein the PCBA circuit board (500) is provided with an image sensor (400), an ISP image processor and an ethernet PHY connector;

the ISP image processor is respectively connected with the image sensor (400) and the Ethernet PHY connector;

the lens on the lens body (100) focuses outside light and then converges the focused outside light into the image sensor (400), and the image sensor (400) converts the light signal into an image signal and then inputs the image signal into the ISP image processor for processing.

10. The vehicular ethernet camera with ESD interference rejection of claim 9, wherein the ethernet PHY connector comprises at least an ethernet PHY chip with a 1G or a 10G electrical interface;

or 10G fiber ethernet PHY chips;

11. The vehicle-mounted Ethernet camera with ESD interference resistance of claim 9, wherein the transmission protocol of the Ethernet PHY connector is based on IEEE1722 AVTP audio video transmission protocol.