A dual-machine redundant backup system based on real-time state detection
A dual-machine redundancy and backup system technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as the failure of the main and standby nodes to work normally, and achieve the effect of improving maintainability and reliability.
Inactive Publication Date: 2019-04-30
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Problems solved by technology
[0003] At present, there is only one physical channel between the active and standby nodes used in the active / standby switching technology in the airborne avionics system for status monitoring and switching command interaction. If this physical channel fails, both the active and standby nodes cannot normal work
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] The dual-machine redundant backup technology decides whether to execute the switching action according to the health status of the node itself, the health status of the other party, and the current active and standby roles. The switching action mainly includes setting the state of the faulty node as backup mode, closing the bus transmission function of the faulty node, setting the state of the backup node as main mode, and enabling the bus transmission function of the backup node. Dual-machine redundant backup technology involves health monitoring, fault handling, active-standby decision-making, active-standby switching, etc., such as figure 2 shown.
[0024] In the present invention, the discrete quantity and the RS232 bus are used for state monitoring and switching command interaction between the main and standby nodes, and the discrete quant...
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The invention provides a dual-computer redundant backup system based on real-time state detection. The system comprises a main processing node and a backup processing node, the health state of the opposite node is obtained by the main processing node and the backup processing node through the discrete magnitude and the RS232 bus period; the health state of the node is detected in real time in a self-checking manner; Both the main processing node and the backup node receive data from an external bus and process the data, but only the main processing node sends the data to the outside, the backup node does not send the data to the outside, and when main-backup switching is carried out, a sending interface of the main processing node needs to be closed, a sending interface of the backup nodeneeds to be opened, and switching is completed after the state of the main node and the state of the backup node are set. The reliability of the system is improved, meanwhile, the hardware and the software of the main node and the backup node are completely the same and can be exchanged, and the maintainability of the system is improved.
Description
technical field [0001] The invention relates to the field of airborne embedded computing, in particular to a dual-machine redundant backup system. Background technique [0002] With the development of technology, the airborne avionics system is becoming more and more complex. The operation of some key tasks requires extremely high reliability. Relying on improving the reliability of a single node can no longer meet the system requirements. Therefore, the dual-machine redundant backup technology ( That is, when the main node fails, the backup processing node can take over from the main node to continue running), so as not to affect the overall function of the system, which greatly improves the reliability of the system. [0003] At present, there is only one physical channel between the active and standby nodes used in the active / standby switching technology in the airborne avionics system for status monitoring and switching command interaction. If this physical channel fails...
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Login to View More IPC IPC(8): H04L12/26H04L12/24
CPCH04L41/0663H04L43/08H04L43/0805H04L43/0823
Inventor 朱强
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC