Redundant communication reception management system and method of time-triggered Ethernet end node

Abstract

The invention discloses a redundant communication reception management system and method of a time-triggered Ethernet end node. The system comprises a message control information capturing module, anintegrity inspection module, a control information time sequence re-arrangement module, a redundancy management module, a control information FIFO module, a washable reception FIFO module and a reception data distribution module. The method includes a reception management method of time-triggered/rate-restricted message data and standard message data. According to the system and the method, the sequence integrity inspection of a received message is accomplished, the time integrity inspection of a time-triggered network message is also accomplished, and functions can be configured; through timesequence re-arrangement of the network message, the design of the redundancy management module is simplified, redundancy management of network messages of a single channel, double channels, three channels and more channels can be adaptive supported, and redundant frames and non-redundant frames can be effectively distinguished and processed; besides, the washable reception FIFO buffering mode isadopted so that assembly-line type message data processing is realized, and the execution efficiency is high.

Description

technical field [0001] The invention belongs to the field of multi-channel redundant communication receiving data management, and relates to a time-triggered redundant communication receiving management system and method for Ethernet end nodes. Background technique [0002] Time-triggered Ethernet is formed on the basis of IEEE802.3 standard Ethernet technology by adding technologies such as distributed network clock synchronization, time-triggered communication and reliability assurance. Time-triggered Ethernet supports dual-redundant or triple-redundant communication. Redundant communication runs on multiple independent physical links. Through adaptive transformation of the data link layer, a unified data interface is provided for the communication link of the upper layer protocol. . Due to the concurrent transmission characteristics of time-triggered data, the time sequence of multiple channel redundant messages arriving at the receiving node is complicated, and the proc...

AI Technical Summary

Problems solved by technology

Due to the concurrent transmission characteristics of time-triggered data, the timing of redundant messages arriving at the receiving node in multiple channels is complicated, and it is difficult to process redundant reception.

[0003] None of the existing methods for redundant communication management in the Ethernet field are suitable for time-triggered Ethernet receive management.

In the data communication method based on redundant network disclosed in Chinese patent CN200410042985.0, network nodes are required to periodically send network diagnostic information, maintain a network status information table, and determine an optimal path for redundant message transmission according to the network status; In the reception of redundant and non-redundant messages disclosed in Chinese patent CN200580038914.6, the given method for judging the reception of valid messages and redundant messages in redundant links has no time window check and no specific reception Management mode, not suitable for reception management of time-critical time-triggered Ethernet

For the reception management of time-triggered Ethernet, there is currently no public method for redundant communication reception management of time-triggered Ethernet end nodes

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