High-reliable fault-tolerant system based on bus network

Abstract

The invention discloses a high-reliable fault-tolerant system based on a bus network. The fault-tolerant system comprises a simulation IO (Input Output) control module, an interface and switching module, an onboard flight control and integrative computation module, a high-performance processing module, a digital IO control module, a router module, and dual-redundancy isomorphic modules corresponding to above six modules; the six modules and the corresponding dual-redundancy isomorphic modules compose four network connections to realize the dual-redundancy hot backup; and thus, the fault-tolerant capacity of the dual-redundancy system is improved through the dual-ring topological structure by using the SpaceWire interconnected bus architecture. Based on a plurality of point-to-point bus interconnected bridge connections, the fault-tolerant system provided by the invention realizes the faster and stronger system fault-tolerant capability by using the dual-ring topological structure.

Description

technical field [0001] The invention belongs to the technical field of embedded system design in aerospace applications, and in particular relates to a highly reliable fault-tolerant system based on a bus network. Background technique [0002] Traditional aerospace high-reliability embedded computers mostly adopt the method of multi-module dual-redundant hot standby, and the system's dual-channel redundant bus mostly uses CAN, 1553, AFDX, etc. Such a dual redundant structure has two obvious disadvantages. First, the system is sensitive to multiple failures. In addition, the traditional space-oriented application buses such as CAN, 1553, and AFDX have low speeds, which cannot meet the requirements of fast and reliable transmission of aerospace product data processing. [0003] With the increasing demand for high reliability and high performance of military aerospace products, aerospace embedded computer products are required to have higher fault tolerance and higher communi...

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