Real-time Ethernet system and implementation method thereof

An implementation method and Ethernet technology, applied in the real-time Ethernet system and its implementation field, can solve problems such as time-affecting deterministic communication mechanism, fault node removal, etc., and achieve the effect of reducing communication overhead and solving the problem of logic defects.

Active Publication Date: 2011-11-09
TRAFFIC CONTROL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If one or some nodes of the real-time Ethernet fail, it is very likely to affect the realization of the time-deterministic communication mechanism. At present, neither the relevant papers nor the relevant standards mention how to remove the faulty node.

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  • Real-time Ethernet system and implementation method thereof
  • Real-time Ethernet system and implementation method thereof
  • Real-time Ethernet system and implementation method thereof

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Embodiment Construction

[0046] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0047] The real-time Ethernet realized by the present invention includes: several communication nodes, Ethernet communication network and time synchronization subsystem, such as figure 1 As shown, each communication node is respectively connected with the Ethernet communication network and the time synchronization subsystem to jointly realize the real-time Ethernet function.

[0048]Described communication node, its communication hardware uses general Ethernet card, and its communication software is based on general TCP or UDP / IP protocol stack, adds real-time processing layer between its application layer and transport layer, and real-time processing layer is carrying out...

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Abstract

The invention discloses a real-time Ethernet system which comprises a plurality of communication nodes, an Ethernet communication network and a time synchronization subsystem, wherein all the communication nodes are respectively connected with the Ethernet communication network and the time synchronization subsystem; the time synchronization subsystem comprises a real-time processing controller and a real-time processing communication bus connected with the real-time processing controller; and the real-time processing controller comprises a master real-time processing control unit and a plurality of slave real-time processing control units which are connected through the real-time processing communication bus, and the master real-time processing control unit and the slave real-time processing control units interactively control the real-time synchronous communication of the communication nodes. The invention also discloses an implementation method of the real-time Ethernet. The invention realizes the synchronous communication of nodes in the real-time Ethernet under the conditions of avoiding correcting hardware, software and protocol stacks of the Ethernet and can implement the reset or cutting-off treatment on failure nodes, thereby solving the logic difficulty that the failure nodes are closed per se.

Description

technical field [0001] The invention relates to the technical field of Ethernet communication, in particular to a real-time Ethernet system and its realization method. Background technique [0002] Ethernet, as one of the most widely used computer communication networks at present, adopts the carrier sense multiple access (CSMA / CD) protocol with collision detection, and the transmission rate can reach gigabit or even more than 10 gigabit, but the CSMA / CD it uses The protocol brings the uncertainty of transmission time, which makes it unsuitable for real-time networks, so it is meaningful to study real-time Ethernet suitable for control systems. [0003] Based on the TCP / IP protocol, the layered structure of Ethernet communication is: application layer, transport layer, network layer, data link layer, and physical layer. Among them, the transport layer protocols mainly include TCP and UDP, and the network layer protocols mainly include IP and Ethernet. The data link layer of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L7/00
Inventor 张建明马连川李开成袁彬彬王悉
Owner TRAFFIC CONTROL TECH CO LTD
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