一种航天光纤总线的交换单元热备份方法  

A Exchange-Unit Hot-Backup Design Method of the Fiber Optic Bus in Spacecraft

作　　者：张莹[1] 肖练刚[1] 张继生[1] 田丰[1] 周华[1] 

机构地区：[1]北京航天自动控制研究所,北京100084

出　　处：《兵器装备工程学报》2017年第1期106-109,124,共5页Journal of Ordnance Equipment Engineering

基　　金：总装共用技术基金"运载火箭多元异构自主组合控制系统技术"(9140A201003)

摘　　要：为了提高航天应用中交换式光纤总线的可靠性,保证数据的正确实时传输,针对在该拓扑结构中处于关键节点的交换单元,提出了一种热备份冗余方法。该方法采用了两个硬件结构完全相同的交换单元,通过硬件冗余和FPGA的软件可编程模块实现故障检测、故障隔离、通道切换与故障报警等功能。通过Quartus的仿真试验,验证了该方法的可行性,具有很强的工程实用价值。In order to improve the high reliability of the switching fiber bus in aerospace applications,and to ensure the correct real-time transmission of data,in this paper,a kind of hot backup redundancy method was proposed,which is based on the exchange unit of the key nodes. The method used two same switching nodes in hardware structures. And through the hardware redundancy and software programmable software modules of FPGA,we achieved fault detection,fault isolation and channel switching and fault alarm and other functions. The feasibility of the method was verified by the simulation experiment of Quartus,which is of great practical value.

关 键 词：光纤 交换单元 热备份 高可靠性 冗余 

分 类 号：TJ768.3[兵器科学与技术—武器系统与运用工程]