OPC UA multi-server aggregation method supporting cache management

A multi-server, cache management technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of too many connections, communication efficiency, reduce connection complexity, etc., and achieve the effect of reducing communication overhead and enhancing communication efficiency.

Active Publication Date: 2018-06-22
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To a certain extent, this method can solve the problem of communication efficiency caused by too many connections between field devices and upper-layer clients and frequent communications, effectively reduce connection complexity, and at the same time have the function of monitoring and forwarding data

Method used

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  • OPC UA multi-server aggregation method supporting cache management
  • OPC UA multi-server aggregation method supporting cache management
  • OPC UA multi-server aggregation method supporting cache management

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Embodiment Construction

[0059] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0060] figure 1 It is a communication structure diagram of multi-server aggregation method platform, upper client and field device. The OPC UA multi-server aggregation method includes several core functional modules including communication interface processing, aggregated data processing, management configuration, and security configuration, among which:

[0061] The communication interface processing function module is responsible for establishing the connection with the upper-layer OPC UA client on the upper side, and is mainly responsible for the establishment of the connection with the underlying server on the lower side;

[0062] The aggregated data processing function module collects the information read from the underlying server, and uniformly provides interface services to the upper client;

[0063] The management configuration f...

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Abstract

The invention relates to an OPC UA multi-server aggregation method supporting cache management, and belongs to the technical field of industrial network. Aiming at an industrial control network whichadopts an OPC UA protocol, a multi-server aggregation method capable of integrating original server node information of a field layer is realized through design of an intermediate layer between a bottom-layer device and an upper-layer system. The method is composed of multiple components such as communication interface processing, aggregated data processing, management configuration and safety configuration, can perform intensive management on the information transmitted by the bottom-layer device and can provide seamless forwarding of data information upwards for OPC UA client through a formof an interface, so that the connection number of the client and the bottom-layer server is reduced to a certain extent, and convenience is brought to network deployment and maintenance. Meanwhile, the invention also provides a cache management method aiming at data aggregation; through an efficient server caching mechanism and a corresponding algorithm, the actual communication frequency of the upper-layer client and the lower-layer server is reduced, the communication efficiency is increased, and the communication expense is reduced.

Description

technical field [0001] The invention belongs to the technical field of industrial networks, and designs an OPC UA multi-server aggregation method supporting cache management. Background technique [0002] With the rapid development of automation technology and information technology, industrial automation control system has also made great progress. Most distributed systems now adopt a client / server structure. Since there is no common standard for device interfaces, device manufacturers develop applications according to their own standard interfaces, which has many limitations from the perspective of system openness. In addition, the application of intelligent equipment on the industrial site, how to collect the information of the bottom equipment of the factory to the process control management layer to the management decision-making layer, and complete the interaction of on-site information between various levels is the basis of the automation of the industrial control sit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06H04L29/08
CPCH04L41/0803H04L41/0823H04L41/145H04L63/0876H04L63/123H04L67/14H04L67/30H04L67/568
Inventor 王恒马越王平蒲宬亘
Owner CHONGQING UNIV OF POSTS & TELECOMM
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