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为了解决机载电子系统处理平台高度综合带来系统资源竞争及深度耦合的问题,将系统综合扩展到前端机电领域,采用分布式综合模块化机载电子系统(DIMA)架构理念,把计算资源分离到与信号源相近的区域,以分离式小机柜取代集中式大机柜,采用高速总线进行分布式机柜互联,重点分析了航电全双工交换式以太网(AFDX网络)、时间触发式以太网(TTE网络)、基于以太网的无源光网络(EPON网络)在DIMA系统中的应用,对比了这3种总线网络技术特点,最后以空客分布式机载电子系统架构为例分析了分布式机载电子系统架构的优势和特点.通过采用DIMA系统架构,解决了机载电子系统处理平台资源竞争和深度耦合问题,同时简化了背板结构,在民用飞机上具有广阔的应用空间.
In order to solve the problem of system resource competition and deep coupling caused by the highly integrated processing platform of onboard electronic systems, the system is extended to the front-end electromechanical field. The concept of a distributed integrated modular on-board electronic system (DIMA) architecture is adopted to separate the computing resources In the area close to the signal source, the distributed small cabinet is used to replace the centralized large cabinet, and the distributed cabinet is interconnected by a high-speed bus. The analysis focuses on the full duplex switched Ethernet (AFDX), time-triggered Ethernet (TTE network) and Ethernet-based passive optical network (EPON network) in DIMA system, the characteristics of these three bus network technologies are compared. Finally, the distribution of Airbus distributed on-board electronic system architecture is analyzed Advantages and Features of Airborne Electronic System Architecture The DIMA system architecture solves the resource competition and deep coupling problems of the airborne electronic system processing platform, simplifies the structure of the backplane and has broad application space on civil aircraft.