一种高速SpaceWire系统设计与验证
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摘要
标准SpaceWire总线技术虽然在航天器上应用广泛,但是存在传输速率低的弱点.针对这一不足,首先提出了一种高速SpaceWire系统架构.在此基础上开展了吉比特级SpaceWire终端节点和路由器的FPGA设计,解决了终端节点的物理接口、片上总线、DMA,以及路由节点目的端口仲裁模块和组寻址路由模块设计中的关键问题.在测试验证部分,开展了数据传输测试、误码率测试和数据传输率测试,测试结果表明高速SpaceWire系统已具备路由和终端节点的主要功能、指标较先进,具有良好的航天应用前景.
Although the standard SpaceWire is widely used in spacecraft,there are weaknesses in the low transmission rate. To cope with this disadvantage,a gigabit level SpaceWire system architecture is proposed firstly in this paper. Based on this,the FPGA-based design of high-speed SpaceWire terminal nodes and routers is carried out,in which the key problems are solved,such as: physical interfaces,onchip bus,DMA,destination port arbitration module and group addressing routing module. In the testing and verification part,data transmission test,bit error rate test and data transmission rate test are carried out. The testing results show that the high-speed SpaceWire system has advanced indicators and essential functions for routers and terminals,and has good prospects for space applications.
Although the standard SpaceWire is widely used in spacecraft,there are weaknesses in the low transmission rate. To cope with this disadvantage,a gigabit level SpaceWire system architecture is proposed firstly in this paper. Based on this,the FPGA-based design of high-speed SpaceWire terminal nodes and routers is carried out,in which the key problems are solved,such as: physical interfaces,onchip bus,DMA,destination port arbitration module and group addressing routing module. In the testing and verification part,data transmission test,bit error rate test and data transmission rate test are carried out. The testing results show that the high-speed SpaceWire system has advanced indicators and essential functions for routers and terminals,and has good prospects for space applications.
引文
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[4]张英静,何锋,卢广山,等.基于TTE的改进加权轮询调度算法[J].北京航空航天大学学报,2017,43(8):1577-1584.ZHANG Y J,HE F,LU G S,et al.A modified weighted round robin scheduling algorithm in TTE[J].Journal of Belting University of Aeronautics and Astronautics,2017,43(8):1577-1584.
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[6]毛春静,关永,David Jungwirth.星载Space Wire路由器的研究与设计[J].电子与信息学报,2010,32(8):1904-1909.MAO C J,GUAN Y,DAVID J.Research and design of on-board dynamic spacewire router[J].Journal of Electronics&Information Technology,2010,32(8):1904-1909.
[7]STEVE P,CHRIS M,DAVID M,et al.Space Fibre networks[C]∥International Space Wire Conference.New York:IEEE,2016,10月25-27.
[8]姜宏,杨孟飞,刘波,等.高速Space Wire光纤总线系统研究与实现[C]∥2017年全国工业控制计算机年会.北京:中国计算机学会,2017.JIANG H,YANG M F,LIU B,et al.Research and Implementation of High-Speed Fiber Bus System[C]∥China Industrial Control Computer Conference,Beijing:CCF,2017.
[9]姜宏,杨孟飞,刘波,等.高速Space Wire路由器设计与实现[C]∥2018年全国工业控制计算机年会.北京:中国计算机学会,2018:23-25.JIANG H,YANG M F,LIU B,et al.Design and implementation of high-speed spacewire router[C]∥2018China Industrial Control Computer Conference.Beijing:CCF,2018:23-25.
[10]姜宏,杨孟飞,刘波,等.Space Wire-D的调度表生成方法[J].中国空间科学技术,2019,39(1):11-18.JIANG H,YANG M F,LIU B,et al.A Method of spacewire-d schedule generation[J].Chinese Space Science and Technology,2019,39(1):11-18.
[11]刘博,杨宇,陈雄斌,等.基于FPGA的高速并行光通信误码率测试系统[J].高技术通讯,2010,20(9):955-959.LIU B,YANG Y,CHEN X B,et al.A FPGA-based virtual instrumentation system for high speed parallel optical transmission BER testing[J].Chinese High Technology Letters,2010,20(9):955-959.
[12]JUSTIN R.数字通信系统中的误码率估计[J].电子测试,2005,2005(1):68-70.JUSTIN R.BER Estimation in digital communication systems[J].Electronic Test,2005,2005(1):68-70.