Real-time Ethernet design method based on common platform

Abstract

The present invention relates to a real-time Ethernet design method based on a general platform, which includes: time slot design, including: on the basis of network clock synchronization, setting through the time interface of the system kernel; clock initialization; and specifying the maintenance function of the clock , responsible for calculating and updating the time slice data of specified network events; clock setting; clock start data structure initialization; The method; the design of the real-time application layer protocol stack includes: using the open source CANOPEN project as the application layer interface to realize the real-time protocol stack. The method based on the general hardware platform of the present invention realizes the real-time Ethernet communication based on the general hardware platform, solves the problem that special chips must be used, improves flexibility and development efficiency, and reduces costs.

Description

technical field [0001] The invention relates to computer network technology, in particular to a design method of real-time Ethernet based on a common platform. Background technique [0002] The research on real-time network abroad is earlier, and there are three mainstream high-real-time Ethernets: TTE, EtherCat and SERCOS. [0003] The investigation found that these three types of real-time Ethernet all need special-purpose chips to realize. One of the reasons why special-purpose chips are used is to control the market and users, so that the owner of the bus intellectual property rights is in a favorable position, so that it can be used at any time in the future. Can monopolize the market and control users. [0004] The research on real-time network in China is relatively late, and the main R&D units include the Communication Engineering Department of Xidian and the Software and Communication Department of Tsinghua University. And they are all aimed at specific needs, and...

AI Technical Summary

Problems solved by technology

Since the communication with foreign manufacturers must go through an intermediate agent, the efficiency of cooperation and communication is low

[0009] 3. Because foreign products often contain many additional services and functions, resulting in high prices, and these additional services and functions are often unnecessary

[0011] 5. Due to the use of dedicated chips and dedicated application layer protocols, the real-time networks of different manufacturers do not have interoperability