CN-116788173-B - Service type regional controller for vehicle

Abstract

The invention discloses a service type regional controller for vehicles, which takes a multi-core heterogeneous microprocessor integrating a micro control unit and a micro processing unit core as a core chip of the service type regional controller, utilizes a built-in dual-core lock-step micro control unit meeting functional safety requirements as a regional power distribution module, a safety redundancy output module and a control core of a regional gateway to run software functions with specific requirements on real-time performance and safety performance, utilizes the built-in micro processing unit to provide calculation force support for the regional controller and sensor data processing and provide a service interface for a regional controller or a central computer, and performs power supply management, network management, power consumption management and functional safety management on the regional controller, an intelligent sensor and an intelligent executor, and provides a service interface for the regional controller through a high-speed Ethernet to meet the requirements of a software defined vehicle.

Inventors

• ZHAO JUNPENG
• SHAO DE
• XU XU
• QUAN JIANMIN
• LI WEI

Assignees

• 杭州云动智能汽车技术有限公司

Dates

Publication Date

20260512

Application Date

20220613

Claims (5)

1. 1. The service type regional controller for the vehicle is characterized by comprising a multi-core heterogeneous microprocessor, a power supply module, a regional gateway module, a regional power distribution module and a safety output module; The multi-core heterogeneous microprocessor is internally provided with a micro control unit and a micro processing unit; the micro control unit adopts a dual-core lock step mode and is used for processing the functional strategies of the regional power distribution module, the safety output module and the regional gateway module which have requirements on real-time performance and safety performance; the micro-processing unit is communicated with the micro-control unit through an internal bus and a message mechanism and is used for preprocessing signals of a vehicle controller or a sensor in the area; the power supply module is used for supplying power to the microprocessor and the peripheral devices; The safety output module adopts an H-bridge motor driving chip for driving two H-bridge motors simultaneously, the H-bridge motor driving chip is in communication connection with the microprocessor through an SPI bus, a motor driving PWM signal is connected with a PWM output pin of the microprocessor through a PWM1 pin, motor driving output current is output to an ADC acquisition channel of the microprocessor through a CSO1 pin, and an output current value is fed back in real time; the microprocessor at least comprises 3 micro control units with double-core lock steps and a safety level of ASIL B or more, and at least comprises 1 micro processing unit; The regional power distribution module adopts an intelligent high-side driving chip with diagnosis, protection and current sampling functions to replace the traditional relay and fuse combination, and manages the power supply of a controller, an intelligent actuator and an intelligent sensor in a region; The microprocessor IS connected to an IS function pin of an intelligent high-side driving chip adopted by the regional power distribution module through an ADC function pin and IS used for collecting an output current value and judging a fault state according to a specific current value; The regional distribution module and the safety output module adopt independent power lines respectively, and can still provide a functional safety output function when the regional distribution power lines are connected abnormally, wherein the regional distribution power lines adopt the 1 st power line, and the safety output module adopts the 2 nd power line.
2. 2. The vehicle service type regional controller of claim 1, wherein the power supply module adopts a power supply chip with a model number of NXP VR5510, a watchdog is arranged in the power supply chip of the power supply module, the running state of the microprocessor is monitored based on question-answer communication of a time window, and the microprocessor is controlled to reset through a reset signal when the running of the microprocessor is abnormal.
3. 3. The vehicle service type regional controller of claim 1, wherein the power module is connected with the microprocessor through I2C communication, and the microprocessor configures the power module and feeds the window watchdog through I2C communication.
4. 4. The vehicle service type regional controller of claim 1, wherein the regional gateway module is provided with Ethernet gateway, CAN/CANFD gateway, LIN gateway, flexRay vehicle network bus and SENT communication interface functions.
5. 5. The vehicular service area controller of claim 4 wherein said Ethernet gateway supports at least 3 lanes 1000Base-T1 and at least 4 lanes 100Base-T1 Ethernet interfaces, said CAN/CANFD gateway supports at least 16 lanes CAN/CANFD interfaces, and a transmission rate of up to 5MBits/s.

Description

Service type regional controller for vehicle Technical Field The invention relates to a vehicle controller, in particular to a vehicle service type regional controller used on a modern automobile. Background The current automobile electronic and electric architecture mainly comprises an electronic unit consisting of a plurality of scattered operation units and control units, an electric unit consisting of an engine, a servo motor, an electromagnetic valve and the like, an executing mechanism consisting of mechanisms such as a mechanical mechanism, a hydraulic mechanism, a valve mechanism and the like. As shown in fig. 1, most of automobiles generally adopt a distributed electronic and electric architecture, tens or hundreds of automobile controllers (electronic units) divide the control of functional domains of an automobile body, a chassis, power, information entertainment and the like according to the distributed electronic and electric architecture, are connected to an on-board gateway through buses such as a CAN (controller area network), a LIN (local interconnect network) and the like, and perform message routing and signal routing among the buses through the on-board gateway. The vehicle controller and the sensor and the actuator connected with the vehicle controller are independently powered, the whole vehicle is quite complex in structure and high in design and manufacturing cost. The vehicle controllers according to the technical scheme of the application refer to the vehicle controllers. As the related functions to be realized by the automobile are more and more complex, the number of the automobile controllers is more and more, as shown in fig. 2, part of the automobile starts to integrate each functional domain, each functional domain realizes the software function in the domain by a high-performance domain controller, and is connected with a plurality of sensors and actuators through a CAN bus, and cross-domain information interaction is realized by connecting an ethernet with a high-performance ethernet gateway. Although the logic of the existing domain controller divides the whole vehicle into a plurality of functional domains according to the functions of the electronic components, and then a core processor with more excellent processing capacity is adopted to control each domain, so that the purpose of replacing the current distributed automobile electronic and electric architecture is achieved. Because each domain controller has multiple functions (such as a chassis domain controller, a power domain controller, a vehicle body domain controller, an information domain controller, an automatic driving domain controller and the like), and particularly the power domain controller has very complex functions, the domain controller has very high development difficulty, and only a part of the domain controllers can be integrated into the domain controller at present, thereby achieving the aims of partially reducing the weight of the controller and the wire harness and reducing the cost and the power consumption. The domain controllers related to the technical scheme of the application refer to the domain controllers. Under the development trend of vehicle intellectualization and networking, a new demand is put forward on an electronic and electric architecture of an automobile through software definition of the automobile (the functions of the automobile can be configured through software), the electronic and electric architecture gradually evolves from a distributed type to a centralized type, and a concept of partition management of the automobile is formed. Under the central centralized electronic and electric architecture as shown in fig. 3, the regional controllers in the different regions such as the left front region, the left rear region, the right front region and the right rear region are connected with a central computer through a trunk ethernet, the intelligent sensors and the actuators in the regions are connected to the regional controllers through a CAN, LIN or FlexRay network, and dual-power redundant power supply and intelligent hierarchical power supply in the regions are realized. The regional controller is in charge of carrying out the role of regional network, carrying out the communication data distribution of controllers, sensors and actuators in the regional network, providing real-Time service for a central computer by using a Time sensitive network TSN (Time-SENSITIVE NETWORKING), carrying out the role of intelligent distribution box in the regional network, and generally adopting a distributed grading distribution network mode, wherein a primary distribution network adopts dual-power redundancy power supply to transmit power to the regional controller, a secondary distribution network is in charge of continuously transmitting the power downwards to each controller, each actuator and each sensor in the regional network by the regional controller, and in addition, the regio