Time-sensitive network data transmission system and transmission method

Abstract

The invention discloses a time-sensitive network data transmission system and transmission method. The system comprises end equipment serving as a data transceiving point, a clock synchronization module for providing an accurate synchronous clock for a network, and bridge equipment playing a switching role, in the bridge equipment, a port flow monitoring and filtering module provides a supervisionmechanism for port data entry management and control, priority queues provide at most eight priority queues, a transmission scheduling module provides a transmission mechanism for time-sensitive datatransmission, and the scheduling module is preempted to optimize time-sensitive data transmission delay. The internal memory unit performs centralized management on the to-be-converted data frames. The system adopts a perfect data shaping scheduling mechanism, so that strong real-time data can preempt weak real-time data, the preempted data can continuously occupy a channel to be transmitted after the strong real-time data is transmitted, a set of rapid transmission solution is provided for future deterministic data, the transmission delay of the data is greatly reduced. The reliability and stability of data transmission are improved.

Description

technical field [0001] The invention relates to the field of communications, in particular to a time-sensitive network data transmission system and a transmission method. Background technique [0002] In the era of intelligent manufacturing, the integration of IT and OT realizes collaborative manufacturing under the entire data transparency. In industrial manufacturing, the communication mode of fieldbus has great limitations, and it is difficult to meet the needs of the era of intelligent manufacturing. The complexity of the field bus has different physical interfaces, transmission mechanisms, and object dictionaries, which cause a large delay and jitter in the collection of IT information and the downlink of instructions; the traditional IEEE802.3 network adopts CSMA / CD, that is, conflict monitoring , the mechanism of preventing collision, resulting in low reliability and stability of important data transmission; industrial motion control systems have higher and higher req...

AI Technical Summary

Problems solved by technology

A media access violation still occurs because the port may have multiple users communicating with the connected user

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