FlexRay is a communication bus for automotive applications, designed to ensure high data rates, fault tolerance, and operates on a time cycle, split in static and dynamic segments for event-triggered and time-triggered communications. Therefore, it becomes suitable for hard real-time and safety-critical applications. Furthermore, it enables cyclic and acyclic communication in the static and dynamic segments according to their specifications, ensuring synchronized, error-free communication between transmitters and receivers. One challenge for applying this protocol, however, is the complexity of the task of message scheduling, for which some techniques have already been developed and we explored to show our method. Here, we carried out the analysis for a specific application that deploys the FlexRay bus, through a heuristic method with the support of a computer software to search for the best combination of message scheduling of the entire system. The effectiveness of the proposed approach is demonstrated by a case study performed within the automotive domain.

FlexRay是用于汽车应用的通信总线，旨在确保高数据速率，容错能力，并按时间周期运行，分为静态和动态段，以进行事件触发和时间触发的通信。因此，它适用于硬实时和对安全性要求很高的应用。此外，它还可以根据其规范在静态和动态段中进行循环和非循环通信，从而确保发送器和接收器之间的同步，无错通信。但是，应用此协议的一个挑战是消息调度任务的复杂性，为此已经开发了一些技术，并且我们尝试展示该方法。在这里，我们对部署FlexRay总线的特定应用程序进行了分析，通过启发式方法并借助计算机软件来搜索整个系统的消息调度的最佳组合。在汽车领域内进行的案例研究证明了该方法的有效性。