Wireless electronic and electrical framework of automobile and train

Abstract

The invention relates to the technical field of combination vehicles, in particular to a combination vehicle wireless electronic and electrical framework which comprises a vehicle domain controller, an intelligent driving domain controller and an intelligent cabin domain controller. The vehicle domain controller is in data connection with the intelligent driving domain controller through the Ethernet, and the intelligent driving domain controller is in data connection with the intelligent cabin domain controller through the Ethernet. A trailer domain controller, a temperature sensing control unit, a panoramic camera control unit and a tire pressure monitoring control unit are additionally arranged, wherein the temperature sensing control unit, the panoramic camera control unit and the tire pressure monitoring control unit are in data connection with the trailer domain controller through wireless communication, and the trailer domain controller and the intelligent cabin domain controller are in data connection through wireless communication. A wireless communication mode is introduced, the Ethernet and CAN / CANFD communication are combined, a network topology structure of an electronic framework is designed, and the problem of train data communication limited by wire harnesses and interfaces is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile trains, and in particular to a wireless electronic and electrical architecture of an automobile train. Background Art

[0002] With the continuous increase of new functions in commercial vehicles, there are more and more controllers, actuators, and sensors. Distributed electrical and electronic architectures are difficult to meet the new needs of human-vehicle interaction, intelligent driving, and the Internet of Everything under the current situation. The automotive electrical and electronic architecture has begun to shift from distributed to domain-centralized. However, at present, the domain-centralized electrical and electronic architecture has two problems that cannot be solved: (1) The domain controllers are mostly a single entity, and each subsystem in the electrical and electronic architecture is independent, and there is a lack of cross-domain communication and deep integration between sensors. (2) The recognition results between different domain controllers are usually transmitted only through the CAN bus. With the development of intelligent networking of vehicles, the amount of communication data has increased dramatically, and the bus load rate is extremely high, which cannot meet the system's large data transmission needs.

[0003] The body of a train is longer and the structure is more complex. The sensors, actuators, switches or controllers related to the electronic and electrical systems of the train are distributed in various locations such as the cab, chassis or superstructure of the vehicle, and their layout is more complicated.

[0004] Currently, automobile trains mainly use non-standard methods such as single-swing hard wire for CAN bus communication and single-swing coaxial cable for video communication. At the same time, the connection interface of the video cable is not unified, resulting in the problem that the tractor cannot be matched with different trailers. It is also limited by the mechanical properties, operating temperature, corrosion resistance and other problems of components such as wiring harnesses and interfaces. Summary of the invention

[0005] In order to solve the problem that the existing wired communication system does not support the large data volume transmission requirements between the tractor and the trailer in the automobile train, the present invention provides a wireless electronic and electrical architecture for the automobile train, introduces wireless communication methods, combines Ethernet and CAN / CANFD wired connection methods, and redesigns the network topology of the electronic architecture, thereby solving the problem of automobile train data communication due to wiring harness and interface limitations.

[0006] The technical solution adopted by the present invention is to provide a wireless electronic and electrical architecture for automobile trains, including a vehicle domain controller, an intelligent driving domain controller and an intelligent cockpit domain controller. The vehicle domain controller and the intelligent driving domain controller, and the intelligent driving domain controller and the intelligent cockpit domain controller are data connected via Ethernet. A trailer domain controller and a temperature sensing control unit, a panoramic surround view camera control unit and a tire pressure monitoring control unit that are data connected to the trailer domain controller via wireless communication are additionally provided. The trailer domain controller and the intelligent cockpit domain controller are data connected via wireless communication.

[0007] It also includes an integrated power control unit, a battery management control unit, a body electronic stability system control unit, an electric power steering system control unit, an electronic air suspension system control unit, an electronic parking brake system control unit and an emergency brake assist system control unit, which are connected to the vehicle domain controller data via CAN / CANFD respectively.

[0008] It also includes a camera control unit and a radar control unit that are data-connected to the intelligent driving domain controller via Ethernet, and an automatic driving assistance control unit that is data-connected to the intelligent driving domain controller via CAN / CANFD.

[0009] It also includes an instrument control unit, a central control control unit and a head-up display control unit, which are connected to the intelligent cockpit domain controller via CAN / CANFD respectively, and a driving recorder control unit, a panoramic view control unit and an electronic rearview mirror control unit, which are connected to the intelligent cockpit domain controller via wireless communication respectively.

[0010] The beneficial effect of the present invention is that it provides a wireless electronic and electrical architecture for automobile trains, adopts a cross-domain centralized design scheme, the vehicle domain controller and the intelligent driving domain controller exchange information through Ethernet, the intelligent driving domain controller and the intelligent cockpit domain controller exchange information through Ethernet, and the intelligent cockpit domain controller and the trailer domain controller exchange information through wireless communication mode. The present invention adds a trailer domain controller on the basis of the three-domain architecture for automobile trains, forming a four-domain architecture, and adopts wireless communication for the data communication mode between the tractor and the trailer, which solves the pairing problem and data communication problem between different trailers and tractors of automobile trains, meets the requirements of high-bandwidth, low-latency and high-reliability data transmission of automobile train video data, greatly reduces the complexity of wiring and interfaces, saves a lot of wire costs, and is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0012] There are two main vehicle network communication technologies widely used in intelligent connected vehicles: CAN / CANFD and in-vehicle Ethernet.

[0013] In the domain-centralized electrical and electronic architecture, according to the design of the functional architecture, the vehicle's electrical and electronic control functions are generally divided into five functional domains: power domain, chassis safety domain, intelligent driving domain, infotainment domain, and body comfort domain. A domain controller is designed for each functional domain, and the remaining controllers are all intra-domain controllers. Each domain controller is connected to the central gateway via Ethernet and CAN / CANFD, and the connection of each domain controller is achieved through the central gateway routing. Ethernet and CAN / CANFD are both wired communication methods, requiring a large number of different specifications and types of wiring harnesses and ports, making it difficult to achieve matching and communication between tractors and different trailers.

[0014] In order to further reduce the number of parts and the length of wiring harnesses, and further improve the system functional integration, the electronic and electrical architecture has changed from domain-centralized to cross-domain centralized. In the domain-centralized electronic and electrical architecture, the domain controller is only responsible for the centralized control of the functions of one domain, while in the cross-domain centralized electronic and electrical architecture, some domain controllers are responsible for the centralized control of the functions of two or more domains.

[0015] The more common cross-domain centralized electrical and electronic architecture is the three-domain architecture. The three-domain architecture is the vehicle control domain, the intelligent driving domain and the intelligent cockpit domain. The original power domain, chassis safety domain and body comfort domain are integrated into the vehicle control domain. The intelligent driving domain and the intelligent cockpit domain focus on realizing the intelligence and networking of automobiles.

[0016] like Figure 1 As shown, the present invention combines Ethernet, CAN / CANFD and wireless communication, adds a trailer domain controller on the basis of the three-domain architecture, and forms a four-domain architecture, which includes a vehicle domain controller, an intelligent driving domain controller, an intelligent cockpit domain controller and a trailer domain controller, as follows:

[0017] Vehicle domain controller: It is connected to the power control module, including the integrated power control unit and the battery management control unit BMS, which can control the power transmission and speed change of the whole vehicle. It is also connected to the chassis control module, including the body electronic stability system control unit ESP, the electric power steering system control unit EPS, the electronic air suspension system control unit ECAS, the electronic parking brake system control unit EPB and the emergency brake assist system control unit AEBS, which can control the steering, braking and suspension of the whole vehicle. The above control units are connected to the vehicle domain controller through the CAN / CANFD interface for information exchange, and have two independent in-vehicle communication networks to ensure the safety of the whole vehicle.

[0018] Intelligent driving domain controller: connected to the driving control module, including the camera control unit, radar control unit, and assisted driving control unit ADAS, capable of automatic driving assisted control. The intelligent driving domain controller communicates with the camera control unit and radar control unit via Ethernet, and other control units are connected to the domain controller via the CAN / CANFD interface for information exchange and have two independent in-vehicle communication networks to ensure the safety of the entire vehicle.

[0019] Intelligent cockpit domain controller: connected to the cockpit control module, including the instrument control unit, central control unit, driving recorder control unit, panoramic view control unit, electronic rearview mirror control unit, head-up display control unit, and can control various functions in the cockpit. The intelligent cockpit domain controller communicates with the instrument control unit, central control unit, and head-up display control unit through the CAN bus, and the other control units exchange information through wireless communication technology.

[0020] Trailer domain controller: connected to the temperature sensing control unit, panoramic camera control unit and tire pressure monitoring control unit, it can monitor the cargo in the trailer and the surrounding environment of the trailer. The above control units exchange information through wireless communication technology.

[0021] The vehicle domain controller, driving domain controller, and smart cockpit domain controller exchange information through Ethernet, and the smart cockpit domain controller and the trailer domain controller exchange information through wireless communication.

[0022] The present invention adds a trailer domain controller for the automobile train, adopts a wireless communication method for the data communication mode between the tractor and the trailer, solves the pairing problem and data communication problem between different trailers and tractors in the automobile train, greatly reduces the complexity of wiring and interfaces, and saves a lot of wire costs.

Claims

1. A wireless electronic and electrical architecture for automobiles and trains, comprising a vehicle domain controller, an intelligent driving domain controller and an intelligent cockpit domain controller, wherein the vehicle domain controller and the intelligent driving domain controller, and the intelligent driving domain controller and the intelligent cockpit domain controller are data connected via Ethernet, characterized in that: A trailer domain controller and a temperature sensing control unit, a panoramic surround view camera control unit and a tire pressure monitoring control unit are added, and the trailer domain controller and the intelligent cockpit domain controller are connected to each other via wireless communication.

2. The wireless electronic and electrical architecture of a vehicle train according to claim 1, characterized in that: It also includes an integrated power control unit, a battery management control unit, a body electronic stability system control unit, an electric power steering system control unit, an electronic air suspension system control unit, an electronic parking brake system control unit and an emergency brake assist system control unit, which are connected to the vehicle domain controller data via CAN / CANFD respectively.

3. The wireless electronic and electrical architecture of a vehicle train according to claim 1, characterized in that: It also includes a camera control unit and a radar control unit that are data-connected to the intelligent driving domain controller via Ethernet, and an automatic driving assistance control unit that is data-connected to the intelligent driving domain controller via CAN / CANFD.

4. The wireless electronic and electrical architecture of a vehicle train according to claim 1, characterized in that: It also includes an instrument control unit, a central control control unit and a head-up display control unit, which are connected to the intelligent cockpit domain controller via CAN / CANFD respectively, and a driving recorder control unit, a panoramic view control unit and an electronic rearview mirror control unit, which are connected to the intelligent cockpit domain controller via wireless communication respectively.

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