An implementation for star network bus redundancy backup
A technology of network bus and implementation method, applied in bus network, data exchange network, data exchange through path configuration, etc., can solve fault tolerance, poor autonomous management ability, cannot meet the needs of satellite environment, and is not easy for equipment to coordinate with each other work and other problems, to achieve the effect of improving work reliability and fault tolerance, reducing the burden of ground measurement and control, and strengthening self-management capabilities.
Active Publication Date: 2008-02-13
AEROSPACE DONGFANGHONG SATELLITE
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[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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[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0018] As shown in Figure 1, the present invention adopts dual network bus redundant backup mode, dual network bus can adopt CAN bus, TCP / IP bus, IEEE1934 or SpireWire bus, present embodiment adopts CAN bus, is defined as A bus and B bus respectively . There are n nodes on the dual network bus, and n is at least 3. One of the nodes is the master node, which mainly completes the autonomous management function of the entire network bus. Nodes and slave nodes are managed and scheduled; other nodes are slave nodes, which can monitor the status of the slave node’s own network bus, but are controlled by the master node; remote control commands are used as switch control commands of each node to realize the control of devices on the network bus of each node. With power-off control, the master node and the slave node receive remote control commands thr...
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A realization method of the redundant backup of an on-board network bus utilizes double network buses to connect a plurality of nodes, one of the nodes is used as a master node, and the other nodes are used as slave nodes. The master node monitors both states of the own network bus and the network bus of every slave node, and each of the slave nodes monitors the own network bus. By applying a working mechanism of multi-node coordination, a transferring mechanism of the control right of the master node and a redundant mode of double network buses, the method enhances the self-management ability of the network buses, increases the working reliability and fault-tolerant performance, reduces the load of terrestrial measuring and controlling, reduces the volume of the equipment, lowers the weight of a spacecraft and reduces cost.
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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IPC IPC(8): H04L1/22H04L12/24H04L12/26H04L12/40
Inventor 李孝同施思寒
Owner AEROSPACE DONGFANGHONG SATELLITE