闫国瑞,苏晨光,林博轩,史简,田帅虎,李军予

• 1:航天东方红卫星有限公司

摘要(Abstract)：

为了适应航天器信息流多样性需求,提升信息交互的灵活性,提出一种应用扩展帧的CAN总线应用层协议设计。对CAN总线扩展帧29 bit标志符进行合理划分,将其分为数据优先级、源节点地址、组播标志、目的节点地址、帧序号标志、帧序号、帧数据类型7个部分,使得该协议可以支持多优先级、主从、多主、组播、广播等多种灵活通信方式,支持CAN帧起始帧、结束帧、帧连续性判断,以及应用层数据包检验,提高数据传输的可靠性。另外,给出了组播、广播地址分配及屏蔽策略,满足复杂航天器的信息流需求,简化信息流设计过程。最后,通过构建组播、多主及多优先级场景进行应用实例验证,证明了文章提出的协议设计具有适用范围广、灵活性高等优点。

关键词(KeyWords)： 航天器CAN总线;应用层;信息流;多主通信;多优先级

Abstract:

Keywords:

基金项目(Foundation): 国家重大航天工程

作者(Author): 闫国瑞,苏晨光,林博轩,史简,田帅虎,李军予

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