FlexRay总线静态段的负载率优化研究

Research on Load Rate of Static Segment of FlexRay

为了避免传输消息长度悬殊较大时造成带宽的严重浪费和降低FlexRay总线的负载,本文中对消息传输规则进行了研究。提出了将较长静态消息分割后继续在静态段传输的方法,研究了总线负载率与消息长度和帧ID数目之间的关系以及负载率的优化方法。实验结果表明,所提出的方法可有效地降低总线负载率。

For avoiding the serious waste of band width caused by the significant difference in the lengths of messages and reducing the load of FlexRay bus, the rules of message transmission are studied in this paper. A method is proposed that splits the long static message into shorter one and transmitted in static segment. The rela- tionship between the loading rate of FlexRay bus and the number of frame ID and the length of message as well as the optimization method of loading rate of FlexRay bus are studied. The results of experiments show that the method proposed can effectivelv reduce the loading rate of FlexRay bus.