Upper computer with real-time transmission function in Ethernet and Ethernet system

Abstract

The invention discloses an upper computer with a real-time transmission function in the Ethernet and an Ethernet system, and the upper computer comprises: a global timing system module which determines a main clock of global equipment, and achieves the clock synchronization based on a clock synchronization mechanism; an application layer module whichgenerates a scheduling table and analyzes the scheduling table, downloads the message to the kernel driving module at the moment when the application layer module downloads the time triggering message, and receives the time triggering message fromthe kernel driving module; the kernel driving module which receives a time triggering message from the application layer module, downloads the message to the first hardware FPGA module, receives the time triggering message from the first hardware FPGA module and uploads the message to the application layer module; and a first hardware FPGA module which downloads the scheduling table, receives thetime trigger message from the kernel driving module according to the scheduling table, sends the message to the target switch at the sending moment, receives the time trigger message from the switch according to the scheduling table, and uploads the message to the kernel driving module at the uplink moment.

Description

technical field [0001] The invention relates to the field of Ethernet, in particular to an upper computer and an Ethernet system with a real-time transmission function in the Ethernet. Background technique [0002] Real-time transmission of industrial data is one of the important issues in the field of industrial automation. In recent years, Ethernet technology has been widely used in factories, rail transit and other fields due to its high bandwidth and low cost. However, there are still some problems in the current industrial Ethernet technology, which brings security risks to the industrial control environment. The traditional Ethernet data transmission process is: the data is sent from the application layer, transmitted to the switch through the Ethernet network card, and then forwarded by the switch to the destination terminal network card, and finally the network card is upstreamed to the application layer for processing. When a conflict occurs, it is necessary to us...

AI Technical Summary

Problems solved by technology

The Time Sensitive Networking (TSN) standard specified by IEEE 802 has the advantages of high bandwidth and high reliability, and can guarantee real-time data transmission, but it only guarantees real-time data transmission inside the switch

In terms of form, the Ethernet system includes Ethernet switches and Ethernet interface cards, and the existing solutions have not achieved a complete solution

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