基于交换式消息调度算法的Flex Ray网络优化研究  

Research on FlexRay Network Optimization Based on Switched Message Scheduling Algorithm

作　　者：许一男 孔祥琦 刘孟茁 Xu Yinan;Kong Xiangqi;Liu Mengzhuo(Department of Electronic and communication Yanbian University,Yanji 133002,China)

机构地区：[1]延边大学

出　　处：《系统仿真学报》2020年第1期87-95,共9页Journal of System Simulation

基　　金：国家自然科学基金(61763047)

摘　　要：汽车电子设备水平的提升对车载总线网络提出了很高的要求。而FlexRay网络因为其高速率、可靠性等特点成为了流行的车载通信协议。为满足网络发展的需求,设计了一种基于交换式FlexRay网络的调度算法,提出了一种可以准确计算静态段和动态段最坏情况响应时间的计算方法。通过仿真实验,验证了所提算法的网络传输速率提升了26%,时隙数量减少了44%,总线占用率降低了23%。从而进一步优化了FlexRay网络。The development of vehicle electronic technology needs advanced in-vehicle communication network. Because of the high transmission speed, reliability and the flexible topology structure, the FlexRay network has become the most popular in-vehicle communication protocol in recent years. In order to meet the demand of network development, a scheduling algorithm based on switched FlexRay network was designed, and a new method that could calculate the Static segment and the worst case response time of Dynamic segment was put forward. The result of the simulation experiment shows that the transmission speed improves 26%, the slot number decreases by 44% and the busload decreases by 23%. The FlexRay network is better than the previous and its optimization is carried out.

关 键 词：FLEXRAY 消息调度 静态段 动态段 最坏响应时间 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]