【摘要】 为了有效提高针对当前以太网船舶通信系统信息通信实时性分析准确性,以船舶通信CAN总线结构为目标,设计了TTCAN分析协议。定义L1和L2两个不同层级的总线通信系统同步应用精度,通过当前通信节点时钟,确定实时性参考帧,构建分析协议主节点,接收参考帧生成当前通信系统实时性调度线,根据调度线和参考帧,划定当前通信系统实时性时间窗和扩展窗,以此为核心调整整个通信系统的分析组态,划定当前通信系统的标准帧和扩展帧,进行分析比对,实现当前通信系统实时性情况判定。实验研究证明,应用该分析协议,节点实时性传输判定准确率提高22%,总线传输实时性判定准确率提高27%,具有明显的应用优势。更多还原

【Abstract】 In order to effectively improve the accuracy of real-time analysis of information communication in current Ethernet ship communication system, TTCAN analysis protocol is designed with the ship communication CAN bus structure as the target. Define L1 and L2 two different levels of bus communication system synchronization precision, by the current communication nodes clock, determine the real-time reference frame, build the master node analysis agreement, receive reference frame to generate the current real-time dispatching communication system line, according to the schedule line and the reference frame, draw the time window and extended window real-time communication system, the core to adjust the analysis of the whole communication system configuration, delimit the current frame and extended frame system of communication standards, carries on the analysis comparison, to realize the current real-time communication system. Experimental research shows that the application of this protocol improves the judgment accuracy of real-time transmission of nodes by 22% and bus transmission by 27%, which has obvious application advantages.更多还原