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Communicating and synchronous data interaction method of thermal standby redundancy system

A technology for synchronizing data and communication data, applied in the field of data interaction, it can solve the problems of low efficiency, transparency, and difficulty in achieving complete application programmers in the synchronization of software tasks, and achieves the effect of simple implementation, increased synchronization frequency, and improved synchronization.

Active Publication Date: 2011-04-27
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no clock-level synchronization operation process between each stand-alone machine, software is required to participate in the management and control of all synchronization operation processes, so the efficiency of software task synchronization is low, and it is difficult to be completely transparent to application programmers

Method used

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  • Communicating and synchronous data interaction method of thermal standby redundancy system
  • Communicating and synchronous data interaction method of thermal standby redundancy system
  • Communicating and synchronous data interaction method of thermal standby redundancy system

Examples

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Embodiment

[0031] Such as figure 2 As shown, it is a schematic diagram of data interaction between two single machines using the communication and synchronization data interaction method of the present invention when M=2. For the case of M=3, 4, the system can decompose and consider the synchronization of N pairs of stand-alone machines, where N = C M 2 .

[0032] Such as figure 2 As shown, for each stand-alone in the pair of stand-alone machines (stand-alone A and stand-alone B), it includes a processing unit (including central processing unit, memory, etc.) and a communication unit (including asynchronous serial communication controller and synchronous control logic ), where the processing unit is the computer that executes the application program, scheduling and reconstruction tasks, and the communication unit is the hardware that realizes related functions such as synchronization, data interaction and sy...

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Abstract

A communicating and synchronous data interaction method of a thermal standby redundancy system is provided, wherein the communicating data and the synchronous data are transmitted and received by adopting one physical channel, in the interaction process, the communicating data is preferably transmitted, if the communicating data transmitting is not empty, the communicating data is transmitted, ifthe communicating data transmitting buffer zone is empty, the synchronous data is transmitted, the interactive mode of the communicating data and the synchronous data can be in automatic switchover, thus improving the interactive efficiency of the data of the redundant system. in the data synchronization process, the returning synchronous data receiving time is compared with the counterpart transmitting synchronous data receiving time, when the synchronous data transmitted by the counterpart is lagged of the returning synchronous data, a counter is adjusted for the data synchronization, thus improving the synchronism of the whole system. The method of the invention has simple realization, and can save a great amount of hardware source.

Description

technical field [0001] The invention relates to a data interaction method, in particular to a communication and synchronous data interaction method adopted in a hot backup multi-machine redundant system. Background technique [0002] In a hot backup multi-machine redundant system, the system usually needs to agree on the data content and timing of the stand-alone machine, such as how and when to reach agreement on the sensor data exclusive to the stand-alone machine; for example, what is the state data of the stand-alone machine and when to reach agreement etc. Each pair of stand-alone machines in the system needs to interact with data to achieve consistent content, and to achieve time sequence consistency through synchronous interaction, that is, the stand-alone machines in the hot backup redundant system have data with consistent content, and the data with consistent content for different stand-alone machines is within a certain time threshold Relevant content can be foun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L1/22
Inventor 刘波肖爱斌李任欣
Owner BEIJING INST OF CONTROL ENG
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