Method and system for realizing synchronous control of distributed system

A distributed system and synchronous control technology, applied in the field of distributed systems, can solve the problems of high difficulty, high cost, and technical complexity, and achieve the effect of low hardware cost and great practical value

Active Publication Date: 2009-12-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical application, this ieee1588 standard method requires high cost, complex technology, and high difficulty in implementation.

Method used

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  • Method and system for realizing synchronous control of distributed system
  • Method and system for realizing synchronous control of distributed system
  • Method and system for realizing synchronous control of distributed system

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Embodiment Construction

[0071] The basic idea of ​​the present invention is: in the distributed system, the main frame periodically sends the calling packet, and this calling packet is used as the synchronous signal of the whole distributed system, and each slave in the distributed system generates a reception interruption after receiving the calling packet, and the The receiving interrupt triggers an external interrupt, and performs synchronous control at the start of the external interrupt; after the master sends a call packet, it delays until the start of the external interrupt triggered by the slave, and performs synchronous control, thereby realizing the synchronous control of the entire distributed system .

[0072] Taking the RS485 network as an example below, the present invention will be further described in detail in combination with the accompanying drawings and specific embodiments.

[0073] The present invention realizes the synchronous control method of distributed system based on RS485...

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Abstract

The invention discloses a method for realizing the synchronous control of a distributed system, a host of the distributed system periodically sends a call packet, the call packet is taken as a synchronous signal of the whole distributed system, all slaves in the distributed system produce received interrupt after receiving the call packet, thereby triggering the external interrupt, and the synchronous control is implemented at the initial time of the external interrupt; and the synchronous control is implemented from the delay of the host to the initial time of calling the external interrupt by the slaves, thereby realizing the synchronous control of the whole distributed system. Meanwhile, the invention also discloses a system for realizing the synchronous control of the distributed system based on an RS485 network. The proposal of the invention does not need to increase an additional clock cable in the distributed system and only needs a simple hardware circuit to be matched with a software process which is easy to realize, thereby realizing the synchronous control of the distributed system; furthermore, the required hardware cost is very low, thereby being simple and easy to operate and having great practical value.

Description

technical field [0001] The present invention relates to distributed systems, in particular to a method and system for realizing synchronous control of distributed systems. Background technique [0002] In the fields of modern industrial control and computer communication, distributed systems have been used more and more because of their excellent characteristics, but synchronous control has always been a common technical problem in their applications. Synchronous control is one of the core technologies of distributed systems, and its purpose is to maintain a globally consistent physical or logical clock, so that messages, events and time-related behaviors of each node in the distributed system can have a globally consistent interpretation , to ensure that the nodes send and receive messages are completely correct in terms of time logic. In a distributed system, different nodes need a unified clock to achieve a global system clock. If there is no global system clock, it is d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04L29/08
Inventor 张开熊勇
Owner ZTE CORP
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