A Highly Reliable Fault-Tolerant System Based on Bus Network

Abstract

The invention discloses a highly reliable fault-tolerant system based on a bus network. The fault-tolerant system includes an analog IO control module, an interface and exchange module, an airborne flight control and comprehensive calculation module, a high-performance processing module, a digital IO control module, a router module and Its corresponding dual redundant isomorphic modules, these 6 modules and the corresponding dual redundant isomorphic modules form 4 network connections to realize dual redundant hot backup, and use the SpaceWire interconnection bus architecture to realize the dual redundancy system with a double ring topology Improved fault tolerance. The fault-tolerant system of the present invention adopts a double-ring topological structure and is based on multiple point-to-point bus interconnection bridges to realize faster and stronger system fault-tolerant capabilities.

Description

Technical field [0001] The present invention belongs to the field of embedded system design in aerospace applications, and specific relates to a high-reliable fault-tolerant system based on bus networks. Background technique [0002] Traditional aerospacely reliable embedded computers are used in a multi-module dual redundant hot spare, and the system dual-channel redundant bus uses CAN, 1553, AFDX, etc. Such a dual redundant structure has two obvious disadvantages. First, the system is sensitive to multiple faults. In addition, the traditional space-oriented application bus CAN, 1553, AFDX is much lower, and it is not possible to meet the current high and reliable transmission of current aerospace data processing. [0003] As military aerospace products are urgent for high reliability, high-performance demand is urgent, asking aerospace embedded computer products with higher capacity, higher communication bandwidth. However, the current dual redundancy system can only tolerate t...

AI Technical Summary

Problems solved by technology

However, the current dual-redundant system can only tolerate single-mode failures, and the failure of one bus interface will cause the failure of the entire computer system

Another limiting factor of the dual redundant bus architecture is the low bus bandwidth, which can only support 1Mbps or 4Mbps control signals, and does not support the requirements of high-speed interactive transmission of data streams such as payload data output and information processing.

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