High-speed optical fiber bus and realization method for redundance topological structure thereof

Abstract

The invention discloses a high-speed optical fiber bus based on a command response type high-speed optical fiber bus protocol. The structure comprises an optical fiber bus, a network controller, a plurality of network terminals and a plurality of remote terminals, wherein the network controller is connected to the optical fiber bus, the network terminals are hooked on the optical fiber bus through a plurality of optical fiber couplers, and the remote terminals are connected to the optical fiber couplers through bridging equipment. The invention also discloses a realization method for a redundance topological structure of the high-speed optical fiber bus, which comprises the following steps of: closing an optical link, and detecting the connectivity of the optical link in real time; mutually serving as a backup by reverse double loops, and selecting the other link when one link fails; and utilizing a network monitor as redundance equipment of the network controller. By adopting the invention, the optical fiber bus can meet the requirement of various application environments, such as aerospace and the like for high speed, real time and high reliability, easily isolate single-point failures and support various topological structures, the communication rate can reach 2.5Gbps, wires are convenient to lay, the equipment used by a system is simple, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of high-speed bus, in particular to a passive optical network-based command-response high-speed optical fiber bus and a method for realizing the redundant topology structure thereof. Background technique [0002] Data bus technology is the key technology of aerospace electronic systems. Now the complexity of avionics equipment is getting higher and higher, and a data bus network with high bandwidth, strong real-time and high reliability is required to meet the demand. The existing relevant data bus technologies mainly include the following two technical standards, one is the MIL-STD-1553B bus standard, and the other is the FC-AE-1553 bus standard. [0003] The MIL-STD-1553B bus standard began in early 1968. After obtaining formal written approval on September 21, 1978, it was published as an official document of the United States. The MIL-STD-1553B bus is a command / response time-division multiple data bus, ...

AI Technical Summary

Problems solved by technology

[0016] To sum up, the dual-ring redundant structure is convenient for wiring, but the shared bandwidth is sensitive to single-point power failure or failure, and the reliability is limited; the dual-switching type is a star topology, and the wiring is complicated. Because it has several optical ports, the power consumption is large, and the reliability is not easy to guarantee

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