CN115246361A - A Domain Centralized Automotive Electronic and Electrical System - Google Patents

Abstract

The invention relates to a domain centralized type automobile electronic and electric system, which comprises: the system comprises a vehicle control domain controller, an automatic driving domain controller and an intelligent cabin domain controller; the automatic driving domain controller is in communication connection with each sensor on the vehicle, generates a control instruction of the whole vehicle control domain controller after fusing the received information of each sensor and sends the control instruction to the whole vehicle control domain controller; the whole vehicle control domain controller integrates all functions of a power domain, a chassis domain and a vehicle body electronic domain, after receiving a control command, carries out safety level prediction on the command, carries out safety limit on command data, and then carries out coordination control by combining a driving module, a braking module and a steering module of the intelligent line control chassis; the intelligent cabin domain controller is in communication connection with the plurality of sub-function modules through the Ethernet and is used for integrating functions of the plurality of sub-function modules. The invention can be compatible with the central drive and distributed drive configuration automobiles, and fits the development trend of current intelligent automobiles.

Description

A domain-centralized automotive electronic and electrical system

technical field

The invention relates to the field of vehicle control, in particular to a domain-centralized automotive electronic and electrical system.

Background technique

Under the current development trend of software-defined automobiles and automobile intelligence and networking, the traditional distributed Electrical Electronic Architecture (EEA) based on Electronic Control Units (Electronic Control Units, ECUs) has gradually exposed more problems. and face many challenges.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention proposes a domain-centralized automotive electrical and electronic system.

The specific plan is as follows:

A domain centralized automotive electronic and electrical system, including: a vehicle control domain controller, an automatic driving domain controller, and a smart cockpit domain controller. Each domain controller is not only a computing unit, but also has a gateway protocol conversion function. Each domain controller communicates with each other through the central gateway in the form of Ethernet;

The autonomous driving domain controller communicates with each sensor on the vehicle, and after fusing the information received from each sensor, generates a control command for the vehicle control domain controller and sends it to the vehicle control domain controller;

The vehicle control domain controller integrates all the functions of the power domain, chassis domain, and body electronics domain. After receiving the control commands sent by the autopilot domain controller, it predicts the safety level of the commands of the intelligent system, and performs a security check on the command data. Limit value, and then combined with the driving, braking and steering modules of the intelligent control-by-wire chassis for coordinated control;

The intelligent cockpit domain controller communicates with multiple sub-function modules through Ethernet, and is used to integrate the functions of multiple sub-function modules.

Further, the internal network of each domain controller adopts one or more combinations of Ethernet, CAN FD, CAN and LIN to transmit information according to the demand of information volume.

Further, the automatic driving domain controller includes an assisted driving module and an automatic driving module.

Further, the system also includes a cloud server and a vehicle T-BOX. The system performs vehicle information storage and remote vehicle control through the central gateway-vehicle T-BOX-cloud server. Among them, the connection between the central gateway and the vehicle T-BOX is via Ethernet 5G communication technology is used for communication between the vehicle T-BOX and the cloud server.

Further, the vehicle control domain controller has 6 channels of CAN communication, among which CAN1 is used to communicate with each module in the power domain, CAN2-CAN5 is used to communicate with each module in the chassis domain, and CAN6 is used to communicate with the body electronics domain Each module in the communication.

Further, the modules in the power domain include: battery management module, charging module, vehicle thermal management module, high-voltage power distribution module and DC/AC electrical accessory module.

Further, the modules in the chassis domain include: distributed drive system electronic differential control, all-wheel independent steering system steer-by-wire control, all-wheel independent braking system brake-by-wire, braking stability and anti-lock braking control , horizontal and vertical dynamic coordination control and redundant safety control.

Further, the modules in the body electronics domain include the upper body module and the lower body module; the lower body module is responsible for the electrical control of the chassis system, and the upper body module is responsible for the electrical control of the upper body; the internal communication network between the upper body module and the lower body module Independent.

The present invention adopts the above technical scheme, integrates a plurality of scattered small sensors into a single sensor with stronger functions, and divides a plurality of scattered ECUs into a domain controller (DomainControl Unit, DCU ), so as to realize the domain-centralized automotive electronic and electrical system compatible with central drive and distributed drive configuration vehicles.

Description of drawings

FIG. 1 is a schematic structural diagram of a system in an embodiment of the present invention.

Detailed ways

To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention.

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

Example 1:

An embodiment of the present invention provides a domain centralized automotive electronic and electrical system, as shown in Figure 1, the system includes: a vehicle control domain controller, an automatic driving domain controller and an intelligent cockpit domain controller, each domain control The controller is not only a computing unit, but also has the protocol conversion function of the gateway. The three domain controllers communicate with each other through the central gateway in the form of Ethernet.

The internal network of each domain controller uses one or more combinations of Ethernet, CAN FD, CAN, LIN, etc. to transmit information according to the demand for information volume.

(1) Autonomous driving domain

The autonomous driving domain belongs to the upper-level system of the vehicle, and is mainly responsible for information fusion processing of multiple sensors (such as radar, camera, etc.), vehicle positioning, path planning, and decision-making control. Through perception, planning, and decision-making algorithms, the control commands for the vehicle control domain are output, and the horizontal and vertical control of the vehicle is realized through the vehicle control domain.

In this embodiment, it is set that the automatic driving domain controller includes an L3-level advanced assisted driving module and an L4-level and above automatic driving module. In order to improve the utilization efficiency of sensor equipment, the assisted driving module and the automatic driving module share a set of perception systems, and share the resources of the processed sensor signals.

(2) Vehicle control domain

As an important part of this embodiment, the vehicle control domain communicates with modules in the power domain, chassis domain, and body electronics domain, and integrates all functions of the power domain, chassis domain, and body electronics domain. Independent control of the intelligent skateboard chassis, so as to realize the mobile chassis in the true sense. After receiving the control command sent by the autopilot domain controller, the vehicle control domain controller controls the corresponding modules in the power domain, chassis domain or body electronics domain corresponding to the control command.

As shown in Figure 1, the vehicle control domain controller has 6 channels of CAN communication, among which, CAN1 is used to communicate with each module in the power domain, CAN2-CAN5 is used to communicate with each module in the chassis domain, and CAN6 is used to communicate with each module in the chassis domain. Communicate with modules in the body electronics domain.

In this embodiment, the modules in the power domain are set to include: battery management module, charging module, vehicle thermal management module (integrated thermal management solution for batteries, motors, and electrical accessories), high-voltage power distribution module, and DC/AC Electrical accessory module. Those skilled in the art can increase or decrease the modules included in the power domain according to actual needs, which is not limited here.

Each module in the chassis domain is used to control the dynamics of the entire drive-by-wire chassis. In this embodiment, the modules in the chassis domain are set to include: distributed drive system electronic differential control, all-wheel independent steering system drive-by-wire steering control, All-wheel independent braking system Braking by wire, braking stability and anti-lock braking control, horizontal and vertical dynamic coordination control and redundant safety control. Through horizontal and vertical coordinated control, vehicle safety, stability, handling, and economy are improved, and through coordinated control, the redundancy of motor braking force and differential speed control to steering control and braking control is realized. In addition, redundant safety control is realized through communication redundancy (CAN2, CAN3, CAN4, CAN5 in Figure 1), power supply redundancy, and control redundancy. Those skilled in the art can increase or decrease the modules included in the power domain according to actual needs, which is not limited here.

Each module in the body electronics domain is used for body control. In this embodiment, the modules in the body electronics domain include the upper body module and the lower body module; the lower body module is responsible for the electrical control of the chassis system, and the upper body module is responsible for the upper body electrical control. Through the modular body control of upper and lower separation, the rapid split function of the upper and lower body can be realized. As shown in Figure 1, the upper body module includes: low-voltage power distribution module, light control module, tire pressure monitoring module, friction plate wear monitoring module, charging cabin door monitoring module, etc.; the lower body module includes: air conditioning adjustment module, wireless receiving module, Intelligent remote control key module, door control module, light control module, electric window module, wiper washing module, etc. The upper body module and the lower body module exchange information with the vehicle control domain controller through the same communication network (CAN6), while the internal communication networks of the upper body module and the lower body module are independent of each other.

(3) Intelligent cockpit domain

The smart cockpit domain controller communicates with multiple vehicle sub-function modules through Ethernet to integrate the functions of multiple sub-function modules while ensuring low latency and large flow of data transmission. The vehicle sub-function modules in this embodiment include: full LCD instrument display system, head-up display module, 360-degree surround view, large-screen central control module, infotainment module, vehicle interconnection system, etc., responsible for audio-visual entertainment, information display, vehicle interconnection, etc. Those skilled in the art can increase or decrease the sub-function modules connected with the smart cockpit domain controller according to actual needs, which is not limited here.

Further, the system also includes a cloud server and a vehicle T-BOX, and the system performs vehicle information storage and remote vehicle control through the central gateway-vehicle T-BOX-cloud server. Ethernet is used for information transmission between the central gateway and the vehicle T-BOX, while T-BOX and the cloud server use 5G communication technology to reduce the delay of information transmission and enhance real-time performance. Cloud services not only include real-time monitoring of vehicle status information, but also remote control and remote upgrade functions. Through the cloud server, control commands can be sent to any vehicle action actuator, and any subsystem can be remotely upgraded. With the blessing of Ethernet communication and 5G communication technology, it can greatly improve the real-time performance of vehicle information transmission. In addition, in terms of fault diagnosis, a unified Ethernet-based diagnostic interface is used for message analysis, fault diagnosis and program update of any subsystem.

The system of this embodiment is not only applicable to new energy vehicles with central drive, but also applicable to new energy vehicles with distributed drive, especially for electric vehicles with full drive-by-wire distributed drive.

The embodiment of the present invention is based on the current development direction of automobiles, and proposes a brand-new domain-centralized automotive electronic and electrical system, which fully utilizes the characteristics of software-defined automobiles in terms of communication methods and communication technologies, low-latency communication quality, and a The convenience of key remote upgrade programs, unified and standardized fault diagnosis interface, etc., are in line with the current development trend of smart cars.

Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Making various changes is within the protection scope of the present invention.

Claims (8)

1. A domain centralized automotive electronics and electrical system, comprising: the intelligent control system comprises a whole vehicle control domain controller, an automatic driving domain controller and an intelligent cabin domain controller, wherein each domain controller is not only an arithmetic unit, but also has a protocol conversion function of a gateway, and the three domain controllers are communicated with one another in an Ethernet mode through a central gateway;

the automatic driving domain controller is in communication connection with each sensor on the vehicle, generates a control instruction of the whole vehicle control domain controller after fusing the received information of each sensor and sends the control instruction to the whole vehicle control domain controller;

the whole vehicle control domain controller integrates all functions of a power domain, a chassis domain and a vehicle body electronic domain, after receiving a control command sent by the automatic driving domain controller, carries out safety level prediction on a command of an intelligent system, carries out safety limit value on command data, and then carries out coordination control by combining a driving module, a braking module and a steering module of the intelligent drive-by-wire chassis;

the intelligent cabin domain controller is in communication connection with the plurality of sub-function modules through the Ethernet and is used for integrating functions of the plurality of sub-function modules.

2. The domain centralized automotive electronics and electrical system of claim 1, wherein: and the internal network of each domain controller transmits information by adopting one or more combination modes of Ethernet, CANFD, CAN and LIN according to the information quantity requirement.

3. The domain centralized automotive electronics and electrical system of claim 1, wherein: the automatic driving domain controller comprises an auxiliary driving module and an automatic driving module.

4. The domain centralized automotive electronics and electrical system of claim 1, wherein: the system further comprises a cloud server and a vehicle-mounted T-BOX, the system performs vehicle information storage and remote vehicle control through a central gateway, the vehicle-mounted T-BOX and the cloud server, the central gateway and the vehicle-mounted T-BOX are communicated in an Ethernet mode, and the vehicle-mounted T-BOX and the cloud server are communicated through a 5G communication technology.

5. The domain centralized automotive electronics and electrical system of claim 1, wherein: the controller of the control domain of the whole vehicle is provided with 6 paths of CAN communication, wherein CAN1 is used for communicating with each module in the power domain, CAN 2-CAN 5 are used for communicating with each module in the chassis domain, and CAN6 is used for communicating with each module in the electronic domain of the vehicle body.

6. The domain centralized automotive electronics and electrical system of claim 5, wherein: the modules in the power domain include: the system comprises a battery management module, a charging module, a whole vehicle thermal management module, a high-voltage power distribution module and a DC/AC electric accessory module.

7. The domain centralized automotive electronics and electrical system of claim 5, wherein: the modules in the chassis domain include: the system comprises a distributed driving system electronic differential control system, an all-wheel independent steering system steer-by-wire control system, an all-wheel independent braking system brake-by-wire, a brake stability and anti-lock brake control system, a transverse and longitudinal dynamics coordination control system and a redundancy safety control system.

8. The domain centralized automotive electronics and electrical system of claim 5, wherein: the modules in the electronic domain of the vehicle body comprise an upper vehicle body module and a lower vehicle body module; the lower vehicle body module is responsible for controlling electrical appliances of the chassis system, and the upper vehicle body module is responsible for controlling electrical appliances of the upper vehicle body; the internal communication networks of the upper body module and the lower body module are mutually independent.

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