面向空间应用高可靠图像数传设备的设计与实现  

Design and Implementation of High Reliability Image Data Transmission Unit on the Space Application

作　　者：郭林[1] 江源源[1] 陈健飞[1] 曹松[1] 李慧军[1] 陈晓敏[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100190

出　　处：《空间科学学报》2011年第4期541-547,共7页Chinese Journal of Space Science

摘　　要：针对空间高速图像数传任务需求,设计并实现了一种采用SpaceWire总线传输协议的高速图像数传设备.该没备的硬件以FPGA为控制核心,完成对SpaceWire协议芯片的初始化配置、收发数据包处理、中断和异常状态处理等操作.重点阐述了FPGA的可靠性设计,包括状态机设计、异步时钟域设计和数据包传输与链路错误的恢复没计.测试表明该设备能够稳定可靠地实现140 Mbit/s的图像数据传输,对于链路的突发错误在一定时间内具有错误数据恢复能力,能够有效保证传输数据的正确性和稳定性.SpaceWire is an onboard data-handling network for spacecraft which offers high-speed, low power, simplicity, low cost, and architectural flexibility. The unit uses SpaceWire protocol to implement high speed image data transmission for space application. The FPGA can control the system to realize initialization and handling of data packets transmission, interruption and error status. The reliability design approach of FPGA was elaborated on, including the design of state machine, asynchronous clock domains, data transmission and error recovery. The unit can be used successfully in the 140Mbit/s image data transmission. For the burst error of link, the unit can recover the error data in a certain period of time, which can guarantee the validity and stability of data transmission.

关 键 词：SpaceWire总线 FPGA 状态机 异步时钟域 错误恢复 

分 类 号：V446.9[航空宇航科学与技术—飞行器设计]