Time synchronization method of redundant network, redundant network system and equipment
A redundant network and time synchronization technology, which is applied in the field of Ethernet communication, can solve the problems of frequent network switching, low fault tolerance rate, and increased network burden, and achieve the effect of avoiding time synchronization process, high fault tolerance rate, and avoiding frequent network switching
Pending Publication Date: 2022-02-11
ZHEJIANG SUPCON TECH
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[0004] However, the fault tolerance rate of the control method in the prior art is too low. Once the current network fails and cannot establish communication with the clock synchronization server, it will switch to another network, and then perform time synchronization through the clock synchronization server of another network
If both the primary network and the secondary network have connectivity barriers, frequent switching of the network will occur, and the controllers and redundant controllers will also need to perform time synchronization frequently, increasing the network burden.
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[0065] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0066] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...
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The embodiment of the invention provides a time synchronization method of a redundant network, a redundant network system and equipment, and relates to the technical field of Ethernet communication. According to the invention, the method comprises the steps: respectively determining the fault weight of the primary network and the fault weight of the secondary network; according to the fault weight of the main network and the fault weight of the secondary network, determining available networks, wherein the available networks comprise the main network and / or the secondary network; sending a synchronization request message to the primary clock synchronization server or the secondary clock synchronization server through the available network; and performing time synchronization according to a synchronization response message sent by the primary clock synchronization server or the secondary clock synchronization server. The main controller and the redundancy controller are connected with the main clock synchronization server and the secondary clock synchronization server through the main network and the secondary network respectively, redundancy of the clock synchronization servers is achieved under the condition that the controllers are redundant, and fault tolerance and reliability of the system are improved.
Description
technical field [0001] The present application relates to the technical field of Ethernet communication, in particular, to a time synchronization method for a redundant network, a redundant network system and equipment. Background technique [0002] Ethernet is the most common communication protocol standard used in today's local area network. With the rapid development of modern industry, the application of Ethernet communication in the industrial field is becoming more and more extensive. Industrial sites in the fields of power system, workshop-level automation control system and other fields have higher and higher requirements for multi-system collaborative work. In addition, in order to increase the stability of communication, the above-mentioned industrial Ethernet generally uses dual-network communication. Therefore, a common time reference is needed to ensure accurate synchronization of clocks between the two networks, so that the system can operate reliably. [0003...
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IPC IPC(8): H04J3/06
CPCH04J3/0641
Inventor 董丹娜石莹林样陈文祥
Owner ZHEJIANG SUPCON TECH