Fiber-optic network architecture and technology for avionics systems
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摘要: 针对先进航空电子系统对数据网络的高速和混合通信的需求,基于分布式控制、实时存取和故障容忍的设计思想,进行了分布式光纤网络的结构设计和协议选择.重点分析了光纤链路、介质访问控制协议、拓扑、容错技术和网络管理软件.分析结果表明,基于1394b总线的分布式容错光纤网络能提供确定和可靠的通信,同时该吉比特光纤链路满足误码率要求且功率余量达13dB.因此它是具有高带宽、低延迟和易扩展优势的高综合网络结构.
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关键词:
- 航空电子 /
- 数据通信系统 /
- 分布式光纤网络 /
- IEEE 1394b /
- 多级容错
Abstract: In advanced avionics systems, the date communication system requires high speed and hybrid traffic. A scheme of distributed fiber-optic network system was presented based on the design consideration of distributed control, real-time access and fault-tolerance. Along with designing the architecture and choosing the protocol, the critical technology points of the scheme were analyzed emphatically, including fiber-optic links, media access control(MAC) protocol, fault- tolerance, topology technology and network management software. The analysis result indicates that the distributed fiber-optic network based on IEEE 1394b bus can provide deterministic and reliable communication in which the Gb/s fiber-optic link can meet the necessary of bit error rate (BER) with abundant link margin of 13dB. Therefore it has advantages of high bandwidth, low delay and flexible expandability. -
[1] Harres D N. Current state and future direction for military aircraft fiber optics networks Steve Bailey. Digital Avionics Systems Conference. Indianapolis:DASC, 2003:6.B.2-6.1-8 [2] Valentino G J, Johnson D L. Advanced photonic subsystems to implement reconfigurable, fault-tolerant avionics Bandak Faris A. Digital Avionics Systems. Daytona:DASC, 2001:1C1/1-1C1/12 [3] Wolfram Kenneth D. A new radiation-hardened satellite onboard LAN based on IEEE std 1394 . AIAA 2004-5869, 2004 [4] Fowler K. Multiprocessing in real-time systems:part 5[J]. Instrumentation & Measurement Magazine, IEEE, 2003, 6(1):51-54 [5] Djafar K, Lowell L. Fiber-optic communications technology [M]. :Pearson Education Inc, 2001:307-326 [6] Kibler T, Poferl S. Optical data buses for automotive applications [J]. Lightwave Technology, 2004, 22(9):2184-2199
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