摘要
比较了航空电子环境FC(FC-AE)高层五种协议的特点、适用范围、通用性、技术支持性,说明FC轻量协议(FC-LP)适合航电通信的原因。论述了FC-LP的组成与特点:引入了FC节点访问标识和虚拟通道的概念,将通信模式确定为分布对等模式,增加了通道控制、信息传输流控、节点访问标识管理等协议流程,限定了FCP、FC物理层、FC仲裁环、FC交换接口标准功能的不同实现要求。总之,FC-LP通信协议具有高可靠、高效率、低延时的特点,能满足强时性和高可靠性飞机航空电子系统通信需求。
In this paper , five high - level protocols including principle , feature, scope, commonality, technical support for FC-AE are compared , and reasons for FC-LP which better fit to avionics communication is presented. The composition and features of FC-LP are studied. The node access point ID and virtual channels are introduced, the dis- tributed equality communication model is built, the channel control, information transmission control, node access point ID management are incremented, and the function requirements to FCP, FC-PH, FC-AL, FC-SW are specified in FC- LP. FC-LP has characteristics of high-reliability, high-efficiency and low - latency, and can satisfy communication requirements of strong-real-time and high-reliability avionics.
出处
《航空计算技术》
2007年第2期108-111,115,共5页
Aeronautical Computing Technique
基金
国家863计划资助(2005AA755032)
