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A redundant tolerance system based on the cross -backup of the SpaceWire interface

A redundant fault-tolerant and cross-backup technology, applied in the field of redundant fault-tolerant systems, can solve the problems of high development cost, difficult implementation, and large number of satellite system cables, and achieve the effect of reducing difficulty and enhancing self-management capabilities.

Active Publication Date: 2019-12-13
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0007] In view of this, the present invention provides a redundant fault-tolerant system based on SpaceWire interface cross-backup, which can avoid the problems of large number of satellite system cables, difficult implementation and high development cost caused by complex network topology

Method used

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  • A redundant tolerance system based on the cross -backup of the SpaceWire interface
  • A redundant tolerance system based on the cross -backup of the SpaceWire interface
  • A redundant tolerance system based on the cross -backup of the SpaceWire interface

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] The invention provides a redundant fault-tolerant system based on SpaceWire interface cross-backup, which includes a plurality of SpaceWire interface nodes, or a plurality of SpaceWire interface nodes and a routing device with redundant function. Preferably, two are selected for description in this embodiment. Wherein, the main machine and the standby machine have the same functional structure, and both include a router, a main function module and a SpaceWire interface chip, and the SpaceWire interface chip, the main function module and the memory are linked in sequence. Routing tables are stored in routers. The SpaceWire interface chip supports hot backup work. Wherein, the routing table is used to control the working status of each interface in the SpaceWire interface chip, and to control the transmission path of data transmitted from the outsid...

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Abstract

The invention discloses a redundant fault-tolerant system based on SpaceWire interface cross backup. Using the present invention can establish a bridging link between the two machines of the node device, and use the bridging link to realize the external redundant channel of the main machine and the standby machine. Compared with the existing scheme, the system can eliminate the single point failure mode of the link interface At the same time, the number of external links can be reduced by 1 / 2, which saves the cost of the cable network and reduces the difficulty of system integration; at the same time, in the hot backup node device, the bridging link can be directly used for information exchange between the main and standby machines (such as health data, etc.), which enhances the autonomous management capabilities of node devices.

Description

technical field [0001] The invention relates to the field of fault-tolerant design of spaceborne equipment, in particular to a redundant fault-tolerant system based on SpaceWire interface cross-backup. Background technique [0002] As a high-speed serial standard for the interconnection of spaceborne electronic devices, SpaceWire has the characteristics of simplicity, reliability, and flexibility. It can realize point-to-point connection of node devices or network connection based on routers, and has been widely used in spacecraft missions at home and abroad. [0003] In the spaceborne SpaceWire node equipment and network design, in order to avoid single point failure, the fault-tolerant design scheme of dual-machine redundancy backup is generally adopted to improve reliability, that is, when the equipment is interconnected or the equipment is connected to the router, the SpaceWire link interface is used For the design scheme of complete cross backup, please refer to the lit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/707H04L12/761H04L45/28H04L45/16H04L45/24
CPCH04L45/16H04L45/22H04L45/28
Inventor 牛跃华汪路元刘伟伟顾明李欣于俊慧赵文彦刘博冯国平
Owner BEIJING INST OF SPACECRAFT SYST ENG
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