改进FlexRay总线的设计与实现

Design and implementation of improved FlexRay bus

为保证FlexRay总线能更好地应用于列控系统的安全通信中,借鉴ARINC659的物理层对FlexRay总线进行了改进。针对改进的FlexRay总线,在FPGA上进行IP核的设计。并根据需求设计FPGA开发板,搭建硬件平台。通过对改进FlexRay总线仿真和硬件的符合性测试,验证了改进总线与设计的一致性。

The FlexRay bus was improved with reference to the physical layer of AR1NC659 bus. Through the analysis of the reliability and fault tolerance between the FlexRay bus and the improved bus, it was proved that the modified bus had a better performance. According to the improved FlexRay bus, the IP core on FPGA was designed. According to the demand, the FPGA development board was designed, and the hardware platform was construct. Based on simulation and hardware conformance test of the improved design of FlexRay bus, it was verified the consistency of the improved bus.