Vehicle-mounted network architecture and method based on optical fiber communication

Abstract

The invention relates to the technical field of intelligent driving, and particularly discloses a vehicle-mounted network architecture and method based on optical fiber communication, and the architecture comprises a control unit which comprises a central computing platform and a plurality of area controllers, and each area controller is connected with the central computing platform through an optical fiber; a plurality of execution units, wherein each execution unit is connected with one area controller through a CAN bus or the Ethernet; and the sensing and display unit comprises a plurality of camera sensors and a plurality of display screens, and each camera sensor and each display screen are connected with the central computing platform through optical fibers. According to the vehicle-mounted network architecture based on optical fiber communication, optical fiber communication is adopted in a backbone network, the highest communication bandwidth can reach 100 G, the problem that the communication bandwidth is insufficient due to the fact that the number of high-order auxiliary driving high-definition cameras is increased is solved, compared with the same bandwidth, the cost of copper wires and wire harnesses is greatly reduced, and the problem of electromagnetic interference caused by the copper wires is reduced.

Description

Technical Field

[0001] The present invention relates to the field of intelligent driving technology, and in particular to an in-vehicle network architecture and method based on optical fiber communication. Background Art

[0002] As the number and resolution of cameras required for advanced assisted driving and autonomous driving increase, camera SerDes solutions in traditional electronic and electrical architectures face bandwidth bottlenecks, electromagnetic interference, and cost issues caused by a large number of wiring harnesses. It has become a trend to use fiber-optic communications to build an automotive communication backbone network.

[0003] The technical solutions of traditional in-vehicle network architecture have problems such as insufficient communication bandwidth, electromagnetic interference and high wiring harness costs due to the increasing number of high-definition cameras for advanced assisted driving and autonomous driving.

[0004] Based on this technical background, the present invention studies an in-vehicle network architecture and method based on optical fiber communication. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an in-vehicle network architecture and method based on fiber-optic communication. The backbone network of the architecture adopts fiber-optic communication, and the maximum communication bandwidth can reach 100G, which solves the problem of insufficient communication bandwidth caused by the increase in the number of high-definition cameras for high-end assisted driving. Compared with copper wires under the same bandwidth, the cost of wiring harnesses is greatly reduced, and the electromagnetic interference problem caused by copper wires is reduced.

[0006] In order to achieve the above object, the first aspect of the present invention provides a vehicle network architecture based on optical fiber communication, including:

[0007] A control unit, comprising a central computing platform and a plurality of regional controllers, each of which is connected to the central computing platform via an optical fiber;

[0008] Multiple execution units, each of which is connected to a regional controller via a CAN bus or Ethernet;

[0009] The sensing and display unit includes a plurality of camera sensors and a plurality of display screens, and each camera sensor and each display screen is connected to the central computing platform via an optical fiber.

[0010] A second aspect of the present invention provides a vehicle network data transmission method based on optical fiber communication performed in the architecture of the first aspect, comprising:

[0011] A data transmission network for downlink and uplink of data between a central computing platform, multiple regional controllers, multiple camera sensors and multiple display screens is configured through optical fibers;

[0012] Configure the data control network between multiple zone controllers and multiple execution units via CAN bus or Ethernet.

[0013] The beneficial effects of the present invention include:

[0014] The in-vehicle network architecture based on fiber-optic communication proposed in the present invention adopts fiber-optic communication as the backbone network, and the maximum communication bandwidth can reach 100G, which solves the problem of insufficient communication bandwidth caused by the increase in the number of high-definition cameras for advanced assisted driving. Compared with copper wires under the same bandwidth, the wiring harness cost is greatly reduced, and the electromagnetic interference problem caused by copper wires is reduced.

[0015] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the topology of the vehicle network architecture based on optical fiber communication proposed by the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0019] The present invention provides a vehicle-mounted network architecture based on optical fiber communication, such as Figure 1 As shown, including:

[0020] A control unit, comprising a central computing platform and a plurality of regional controllers, each of which is connected to the central computing platform via an optical fiber;

[0021] Multiple execution units, each of which is connected to a regional controller via a CAN bus or Ethernet;

[0022] The sensing and display unit includes a plurality of camera sensors and a plurality of display screens, and each camera sensor and each display screen is connected to the central computing platform via an optical fiber.

[0023] In the present invention, the backbone network adopts optical fiber communication, and the maximum communication bandwidth can reach 100G, which solves the problem of insufficient communication bandwidth caused by the increase in the number of high-end assisted driving high-definition cameras. Compared with copper wires under the same bandwidth, the wiring harness cost is greatly reduced, and the electromagnetic interference problem caused by copper wires is reduced.

[0024] According to the present invention, the plurality of zone controllers include a right front zone controller, a left front zone controller, a right rear zone controller, and a left rear zone controller;

[0025] Each regional controller is connected to the central computing platform through its own optical splitter.

[0026] According to the present invention, each area controller is connected to a plurality of execution units via a CAN bus or Ethernet, and is used to execute drive control on a corresponding area of ​​the whole vehicle.

[0027] According to the present invention, the multiple camera sensors include multiple right front area sensors, multiple left front area sensors, multiple right rear area sensors and multiple left rear area sensors, which are used to perform ADAS image acquisition on corresponding areas of the entire vehicle.

[0028] According to the present invention, the multiple display screens include a right front area display screen, a left front area display screen, a right rear area display screen and a left rear area display screen, which are used to display videos of corresponding areas of the entire vehicle.

[0029] Preferably, one end of each optical splitter is connected to the central computing platform via optical fiber, and the other end is connected to a regional controller, a plurality of camera sensors and a display screen of the corresponding area via optical fiber.

[0030] Preferably, the data downlink initiated by the central computing platform adopts a time division multiple access broadcast transmission mode;

[0031] The uplink data returned by the central computing platform adopts time division multiplexing transmission mode;

[0032] During data transmission, each regional controller, each camera sensor, and each display screen shares the communication bandwidth.

[0033] The present invention also provides a vehicle network data transmission method based on optical fiber communication in the above-mentioned architecture, comprising:

[0034] A data transmission network for downlink and uplink of data between a central computing platform, multiple regional controllers, multiple camera sensors and multiple display screens is configured through optical fibers;

[0035] Configure the data control network between multiple zone controllers and multiple execution units via CAN bus or Ethernet.

[0036] According to the present invention, the data downlink initiated by the central computing platform adopts a time division multiple access broadcast data transmission method;

[0037] The uplink data returned by the central computing platform adopts time-division multiplexing data transmission method.

[0038] According to the present invention, during the data transmission process, each area controller, each camera sensor and each display screen shares the communication bandwidth.

[0039] The present invention will be described in more detail below by way of examples.

[0040] Embodiment 1:

[0041] like Figure 1 As shown, this embodiment proposes an in-vehicle network architecture based on optical fiber communication, including a central computing unit, a right front area controller ZCU1, a left front area controller ZCU2, a right rear area controller ZCU3 and a left rear area controller ZCU4 connected via in-vehicle optical fiber communication;

[0042] In this embodiment, multiple execution control units, camera sensors, and display screens are set: each ZCU is connected to multiple execution control unit ECUs, communicates via CAN or Ethernet, and is mainly responsible for the execution and drive control of the vehicle functions. Multiple high-definition camera sensors (Sensors) and display screens (Displays) are set for ADAS image acquisition and video display;

[0043] In this embodiment, the architecture design is based on the passive optical network (PON) technology: each ZCU is connected to the central computing platform through a splitter with the camera sensor (Sensor) and the display (Display), and all are connected by optical fiber communication; the data downlink (initiated by the central computing platform) of this networking method adopts the form of time division multiple access broadcast; the data uplink adopts time division multiplexing, and the ZCU and the camera sensor (Sensor) and the display (Display) share the communication bandwidth.

[0044] Embodiment 2:

[0045] like Figure 1 As shown, this embodiment provides a vehicle network architecture based on optical fiber communication, including:

[0046] A control unit, comprising a central computing platform and a plurality of regional controllers, each of which is connected to the central computing platform via an optical fiber;

[0047] Multiple execution units, each of which is connected to a regional controller via a CAN bus or Ethernet;

[0048] A sensing and display unit, comprising a plurality of camera sensors and a plurality of display screens, each camera sensor and each display screen being connected to the central computing platform via an optical fiber;

[0049] In this embodiment, the plurality of zone controllers include a right front zone controller, a left front zone controller, a right rear zone controller, and a left rear zone controller;

[0050] Each regional controller is connected to the central computing platform through its own optical splitter;

[0051] In this embodiment, each area controller is connected to multiple execution units via a CAN bus or Ethernet, and is used to perform drive control on the corresponding area of ​​the vehicle;

[0052] In this embodiment, the multiple camera sensors include multiple right front area sensors, multiple left front area sensors, multiple right rear area sensors, and multiple left rear area sensors, which are used to perform ADAS image acquisition on corresponding areas of the vehicle;

[0053] In this embodiment, the multiple display screens include a right front area display screen, a left front area display screen, a right rear area display screen, and a left rear area display screen, which are used to display the video of the corresponding areas of the vehicle;

[0054] In this embodiment, one end of each optical splitter is connected to the central computing platform via optical fiber, and the other end is connected to a regional controller, a plurality of camera sensors and a display screen of the corresponding region via optical fiber;

[0055] In this embodiment, the data downlink initiated by the central computing platform adopts the transmission mode of time division multiple access broadcast;

[0056] The uplink data returned by the central computing platform adopts time division multiplexing transmission mode;

[0057] During data transmission, each regional controller, each camera sensor, and each display screen shares the communication bandwidth.

[0058] This embodiment provides a vehicle network data transmission method based on optical fiber communication, including:

[0059] A data transmission network for downlink and uplink of data between a central computing platform, multiple regional controllers, multiple camera sensors and multiple display screens is configured through optical fibers;

[0060] Configure the data control network between multiple zone controllers and multiple execution units via CAN bus or Ethernet;

[0061] In this embodiment, the data downlink initiated by the central computing platform adopts a time division multiple access broadcast data transmission method;

[0062] The uplink data returned by the central computing platform adopts time-division multiplexing data transmission;

[0063] In this embodiment, during the data transmission process, each regional controller, each camera sensor and each display screen shares the communication bandwidth.

[0064] The embodiment of the present invention proposes an in-vehicle network architecture based on fiber-optic communication. The backbone network adopts fiber-optic communication, and the maximum communication bandwidth can reach 100G, which solves the problem of insufficient communication bandwidth caused by the increase in the number of high-definition cameras for advanced assisted driving. Compared with copper wires under the same bandwidth, the cost of wiring harnesses is greatly reduced, and the electromagnetic interference problem caused by copper wires is reduced.

[0065] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A vehicle network architecture based on optical fiber communication, characterized in that: include: A control unit, comprising a central computing platform and a plurality of regional controllers, each of which is connected to the central computing platform via an optical fiber; Multiple execution units, each of which is connected to a regional controller via a CAN bus or Ethernet; The sensing and display unit includes a plurality of camera sensors and a plurality of display screens, and each camera sensor and each display screen is connected to the central computing platform via an optical fiber.

2. The architecture according to claim 1, characterized in that The plurality of zone controllers include a right front zone controller, a left front zone controller, a right rear zone controller, and a left rear zone controller; Each regional controller is connected to the central computing platform via a respective optical splitter.

3. The architecture according to claim 1, characterized in that Each area controller is connected to multiple execution units via CAN bus or Ethernet to perform drive control on the corresponding area of ​​the vehicle.

4. The architecture according to claim 1, characterized in that The multiple camera sensors include multiple right front area sensors, multiple left front area sensors, multiple right rear area sensors and multiple left rear area sensors, which are used to perform ADAS image acquisition on corresponding areas of the entire vehicle.

5. The architecture according to claim 1, characterized in that: The multiple display screens include a right front area display screen, a left front area display screen, a right rear area display screen and a left rear area display screen, and are used to display videos of corresponding areas of the entire vehicle.

6. The architecture according to claim 2, characterized in that: One end of each optical splitter is connected to the central computing platform via optical fiber, and the other end is connected to a regional controller, a plurality of camera sensors and a display screen of the corresponding area via optical fiber.

7. The architecture according to claim 1, characterized in that: The data downlink initiated by the central computing platform adopts the transmission mode of time division multiple access broadcasting; The uplink data returned by the central computing platform adopts a time division multiplexing transmission mode; During data transmission, each regional controller, each camera sensor, and each display screen shares the communication bandwidth.

8. A method for transmitting data in an in-vehicle network based on optical fiber communication in the architecture of any one of claims 1 to 7, characterized in that: include: A data transmission network for downlink and uplink of data between a central computing platform, multiple regional controllers, multiple camera sensors and multiple display screens is configured through optical fibers; Configure the data control network between multiple zone controllers and multiple execution units via CAN bus or Ethernet.

9. The data transmission method according to claim 8, characterized in that: The data downlink initiated by the central computing platform adopts a time division multiple access broadcast data transmission method; The uplink data returned by the central computing platform adopts a time division multiplexing data transmission method.

10. The data transmission method according to claim 8, characterized in that: During data transmission, each regional controller, each camera sensor, and each display screen shares the communication bandwidth.

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