Abstract
The ARINC659 backplane bus is suitable for high safety and high reliability requirements of aircraft on-board computer communication systems. This paper analyzes the structure of ARINC 659 serial backplane bus and the bus fault tolerance mechanism. On the basis of backplane bus, a 4 degree of aviation fault-tolerant computer is designed. Moreover, the computer architecture and computer system of the instruction branch and monitoring branch are designed in the computer channel. The fault-tolerant management of the computer is realized by bus fault tolerance, redundancy voting between computers and the monitoring of the instruction and monitoring branches.
Highlights
With the rapid development of avionics, the aircraft relies more and more on Avionics systems
High security 4x2 computer fault tolerant redundancy configuration architecture, 4 redundancy computer system consists of 4 identical chassis components, each box contains a channel, the system is divided into 4 channels, numbered A, B, C, D
The ARINC659 bus as the computer motherboard bus communication standard, 4 redundant computer design is composed of command channel and monitoring channel with self monitoring ability
Summary
With the rapid development of avionics, the aircraft relies more and more on Avionics systems. Airborne data bus technology is one of the most important key technologies of Avionics Integration in modern aircraft. With the development of avionics system, new requirements have been put forward for airborne data bus, which has promoted the development of airborne data bus, and the airborne data bus determines the degree of integration of avionics systems. As the skeleton and nerve of avionics system, data bus plays an important role in avionics system, and it promotes each other synchronously with the development of avionics technology[2]. It can be used in the field of aviation, navigation, spaceflight and other bad working conditions
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