基于MicroBlaze的时间触发以太网终端设计与实现  

Design and Implementation of Time Triggered Ethernet Terminal Based on MicroBlaze

作　　者：顾青松 艾斯卡尔·艾木都拉[1] 马博阳 刘兆沛 GU Qingsong;ASKAR Hamdulla;MA Boyang;LIU Zhaopei(Xinjiang University,Urumqi 830000,China;Tsinghua University,Beijing 100084,China)

机构地区：[1]新疆大学信息科学与工程学院,乌鲁木齐830000 [2]清华大学计算机科学与技术系,北京100084

出　　处：《计算机测量与控制》2023年第4期174-180,共7页Computer Measurement &Control

基　　金：国家自然科学基金青年基金(61701276)。

摘　　要：针对确定性机载网络通信系统实时性强、可靠性高的需求,设计了一种时间触发以太网终端的实现方案;以MicroBlaze软核处理器为核心,使用LWIP协议栈实现UDP通信;经过60 s的性能测试,平均带宽约为621 Mbits/s;在TTE交换机与终端设备之间,使用主从式同步方式实现时间同步;经过10次时间同步测试,链路传输延时在150~250μs之间;建立时间同步后加入时间触发任务,进行周期性的发送时间触发消息;为了保证系统可靠性,在传输层中采用MD5数据校验,并设计了一种四余度管理机制;测试结果满足TTE终端的功能需求。Aiming at the requirements of strong real-time and high reliability in deterministic airborne network communication system,a time-triggered Ethernet terminal implementation scheme is designed.With the MicroBlaze soft core processor as the core,the LWIP protocol stack is used to implement UDP communication.After 60s of performance testing,the average bandwidth is about 621 Mbits/s.Between the TTE switch and the terminal device,the time synchronization is achieved by using the master-slave synchronization mode.After 10 times of synchronization testing,the link transmission delay is between 150~250μs.After establishing time synchronization,the time trigger tasks are added and the time trigger messages are sent periodically.In order to ensure the system reliability,MD5 data verification is used in the transport layer and a four-degree redundancy management mechanism is designed.The test results meet the functional requirements of TTE terminals.

关 键 词：机载网络 时间触发以太网 余度设计 可靠性 哈希校验 

分 类 号：TN91[电子电信—通信与信息系统]