摘要
航空电子全双工交换式以太网(AFDX)是大型飞机平台广泛采用的总线,而现役飞机大多数子系统均使用成熟的ARINC429或者1553B总线,如何完成多总线可靠转换,是新型飞机航电系统的关键技术之一;简要介绍了AFDX和ARINC429协议特点,并利用HI-8582芯片和FPGA技术设计了这两种总线协议相互转换的系统;从AFDX数据帧中解析出数据字,或者将数据字添加AFDX协议各层首部组成AFDX帧,完成两种总线的桥接;通过Quartus II的时序仿真和物理测试,结果表明AFDX数据帧和429数据字可以转换,验证了这种协议转换模型的可行性和正确性。
Avionics Full Duplex Switched Ethernet （AFDX） is widely adopted by the platform of the large aircraft, and aircraft services to most of the subsystem which adopts mature ARINC429 or 1553 B bus, but one of the key technologies for new plane machine avionics system is how to use the existing mature airborne equipment installation to large aircraft, and how to perform multiple bus＇s reliable conversion. It briefly introduced the characteristics of AFDX and ARINC429 protocol, and using the HI -8582 chip and FPGA technology designs two kinds of bus protocol mutual conversion system. By analyzing the AFDX data frame to resolve the data word, or adding AFDX protocol of each layer＇s head AFDX frame to complete two protocol＇s network bridge. Through the simulation of QuartesII and physical test, which shows this protocol conversion correctness and feasibility of the model.
出处
《计算机测量与控制》
北大核心
2013年第9期2522-2524,2528,共4页
Computer Measurement &Control
