基于异构处理器的新能源汽车车载终端的研究与设计

Research and Design of New Energy Vehicle On-board Terminal Based on Heterogeneous Processor

基于异构处理器STM32MP157设计新能源汽车车载终端,并搭载4G无线网络模块,实现数据的远程无线传输。文中异构处理器核心按功能定义可划分为实时核心和应用核心。其中,实时核心的主要功能是采集控制器局域网总线(controller area network,CAN)网络上的原始CAN报文数据,应用核心主要负责CAN报文的解析和上传工作,实时核心和应用核心之间通过处理器内部核间通信控制器、硬件信号量及共享内存等硬件外设实现不同核心之间的数据同步和交换。利用设计的新能源汽车车载终端,可实现对新能源汽车整车生命周期的管理和监控。

This paper designs a new energy vehicle on-board terminal based on the heterogeneous processor STM32MP157,and carries 4G wireless network module to realize remote wireless transmission of data.In this paper,the heterogeneous processor core can be divided into realtime core and application core according to the function definition.Among them,the main function of the real-time core is to collect the original CAN message data on the CAN bus network.The application core is mainly responsible for the analysis and upload of the CAN message.The real-time core and the application core realize the data synchronization and exchange between different cores through the internal core communication controller,hardware semaphore,shared memory and other hardware peripherals of the processor.Through the design of the new energy vehicle on-board terminal,the whole vehicle life cycle of the new energy vehicle can be monitored.