摘要
随着FlexRay总线在汽车安全以及动力系统中的广泛应用,车内CAN总线和FlexRay总线之间的数据传输成为迫切需要解决的问题。本文以飞思卡尔的MC9S12XF512微处理器为核心,分别搭载了CAN总线接口电路和FlexRay总线接口电路构成网关的整体结构。并分析了CAN与FlexRay两种不同数据帧格式,提出了一种CAN-FlexRay网关的设计思想,解决这两种总线关于不同协议、数据帧格式之间的转换问题。其中针对CAN-FlexRay网关中数据转换遇到的难点问题进行了研究分析,采用了双缓冲区结构,保证数据转换的完整性与可靠性。
With the extensive application of FlexRay bus in automobile safety and power system, the data transmission between the vehicle＆#39;s FlexRay bus and CAN bus becomes an urgent problem to be solved. In this paper,Freescale＆#39;s MC9S12XF512 microprocessor is the core, CAN bus interface and FlexRay bus interface hardware circuit. And the CAN and FlexRay two different data frame formats were analyzed, and a CAN-FlexRay gateway design ideawas proposed to solve the conversion between the two protocols on different protocols and data frame formats. Aiming at the difficult problem of data conversion in CAN-FlexRay gateway, the corresponding mplementation algorithm was put forward to complete the data communication of two different buses.
出处
《贵州大学学报（自然科学版）》
2017年第5期93-99,共7页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金(6126007)
贵州省科技厅国际科技合作计划项目(黔科合外G字[2014]7007)
贵州省普通高等学校汽车电子技术特色重点实验室(黔教合KY字[2014]213)
