Time synchronization system based on industrial ring network, and working method thereof

Abstract

The invention relates to a time synchronization system based on an industrial ring network, and a working method thereof. The time synchronization system comprises a plurality workstations, a data transmission network module and a plurality of time counting modules, wherein the data transmission network module is used for providing network connections for the plurality of workstations, setting an arbitrary workstation among the plurality of workstations as network management control equipment, namely, a master workstation, setting the rest workstations as slave workstations, and establishing a main loop and a standby loop; the main loop starts from the master workstation, connects the slave workstations in sequence along a clockwise direction and finally forms a ring connection and returns to the master workstation; the standby loop starts from the master workstation, connects the slave workstations in sequence along an anticlockwise direction and finally forms a ring connection and returns to the master workstation; and each of the plurality of time counting modules is arranged in each workstation separately. According to the time synchronization system and the working method thereof, network transmission delay information and reference time information are calculated and issued in real time, and controlled equipment connected to the network dynamically corrects local time accordingly, thereby ensuring the synchronization performance among the equipment.

Description

technical field [0001] The invention relates to a time synchronization system based on an industrial ring network and a working method thereof, belonging to the technical field of communication networks. Background technique [0002] With the deep integration of informatization and industrialization, network technology has penetrated into all links of the industrial chain. With the help of the Internet, industrial equipment can also complete efficient and reliable remote control, and realize predictive maintenance, information security, energy monitoring and advanced diagnosis. The technology that could not be adopted on a large scale has made industrial equipment management officially enter the network era. [0003] In the current industrial production process, there will be a large number of distributed terminal devices connected together through the network. These devices are of various types and complex functions. They are commanded by the network management system and c...

AI Technical Summary

Problems solved by technology

[0003] In the current industrial production process, there will be a large number of distributed terminal devices connected together through the network. These devices are of various types and complex functions. They are commanded by the network management system and cooperate to complete the work. Therefore, a relatively consistent time base is required among the devices. , to ensure that the error can be limited within a controllable range, which poses a huge challenge to the time synchronization capability of the network

[0004] Although there are a variety of time synchronization algorithms in existing interconnection systems, they are mostly used in wide-area networks such as the Internet. The implementation process is complicated, special timing equipment is required, and the application cost is high. There will be compatibility problems when the equipment needs to be connected in a ring, so it is not an ideal application solution under the ring network condition

Images