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为了实现FC-AE-1553和MIL-STD-1553两种总线网络之间信息单元的准确传输,分析了当前航电系统的应用现状,描述了FC-AE-1553协议在总线应用方面的性能优势,提出了两种协议之间的转换方案,实现了两种信息单元格式之间的转换。在FC-AE-1553帧与MIL-STD-1553字相互映射关系的基础上,对协议转换方案进行了总体分析,并按照子功能进行了模块的划分。针对各个子模块,依据其运行机理给出了详细的设计流程。仿真分析结果表明,协议转换方案具有良好实时性能,具有很强的适应性。
In order to achieve accurate transmission of information elements between two bus networks FC-AE-1553 and MIL-STD-1553, the current status of avionics system is analyzed and the performance advantages of FC-AE-1553 protocol in bus applications are described , Proposed a conversion scheme between the two protocols and realized the conversion between the two kinds of information unit formats. Based on the mutual mapping relationship between FC-AE-1553 frame and MIL-STD-1553 word, the protocol conversion scheme is analyzed in general and the modules are divided according to sub-functions. For each sub-module, according to its operating mechanism is given a detailed design process. The simulation results show that the protocol conversion scheme has good real-time performance and has strong adaptability.