An implementation for star network bus redundancy backup

Abstract

A method for implementing redundant backup of an on-board network bus, using dual network buses to connect a plurality of nodes, wherein one node is used as a master node, and the remaining nodes are used as slave nodes, and the master node monitors the state of its own network bus and the network status of each slave node. Bus status, each slave node monitors the status of its own network bus. By adopting the multi-node coordination mechanism, the master node control right transfer mechanism and the dual network bus redundancy mode, the autonomous management capability of the network bus is strengthened, and the reliability and reliability of the spacecraft are improved. Fault-tolerant performance reduces the burden of ground measurement and control, while reducing the size of equipment, reducing the weight of spacecraft, and reducing costs.

Description

technical field [0001] The invention relates to a method for realizing redundant backup of on-board network buses, in particular to a method for realizing redundant backup of on-board network buses based on multi-node coordinated work. Background technique [0002] At present, the on-board network bus of spacecraft has been widely used. Most of the on-board devices rely on hardware devices for redundant backup, which are large in size, heavy in weight, and expensive in cost. Heavier. [0003] Chinese patent application No. 00107933.6 discloses a method for realizing bus-type computer network redundancy. This method uses a hardware module to realize serial bus connection, which is large in size, heavy in weight, and not reliable enough to meet the needs of the satellite environment. [0004] Chinese patent application No. 01809257.8 discloses non-fault-tolerant network nodes in multiple fault-tolerant networks, and provides a method and device for communicating with non-faul...

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Problems solved by technology

[0002] At present, the on-board network bus of spacecraft has been widely used. Most of the on-board devices rely on hardware devices for redundant backup, which are large in size, heavy in weight, and expensive in cost. Heavier

[0003] Chinese patent application No. 00107933.6 discloses a method for implementing bus-type computer network redundancy. This method uses a hardware module to realize serial bus connection, which is large in size, heavy in weight, and not reliable enough to meet the needs of satellite environments.

[0004] Chinese patent application No. 01809257.8 discloses non-fault-tolerant network nodes in multiple fault-tolerant networks, and provides a method and device for communicating with non-fault-tolerant network nodes in a fault-tolerant network environment. This method cannot achieve coordination among multiple nodes , Poor fault tolerance and self-management ability

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