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An opc UA sleep proxy method suitable for wireless field devices

A field device, wireless technology, applied in the field of OPCUA dormancy agent, can solve the problems of server network failure, data can not be provided to external network, etc., to solve the effect of data inaccessibility

Active Publication Date: 2019-03-08
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to two problems. The first is that the data collected by the device as the server cannot be provided to the external network after it is dormant. The second is that the external client cannot find the dormant server, which may cause network failure.

Method used

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  • An opc UA sleep proxy method suitable for wireless field devices
  • An opc UA sleep proxy method suitable for wireless field devices
  • An opc UA sleep proxy method suitable for wireless field devices

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention will be further described:

[0029] Such as figure 1 as shown, figure 1 It is the dormancy handshake message of the new design of the preferred embodiment of the present invention; the main content of the dormancy handshake message is: OPC UA general request header, cache size and SleepID, wherein the cache size is the cache space size that the dormant server needs the proxy server to provide, and SleepID is A 16-bit unsigned integer used to indicate the dormant proxy relationship.

[0030] figure 2 It is the dormancy confirmation message newly designed in the preferred embodiment of the present invention; the main content of the dormancy confirmation message is: OPC UA general response header and SleepID, wherein the state information of message confirmation is reflected in the general response header.

[0031] image 3 It is the dormancy registration message of the new design of the preferred e...

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Abstract

The present invention requests protection of an OPC UA dormant proxy method suitable for wireless field devices, which enables wireless field devices based on the OPC UA protocol to have a dormant proxy function, can effectively prolong the life cycle of network devices, and simultaneously solves data problems during device dormancy The problem of not being able to read normally. Methods According to the OPC UA series protocol standard, a dormant agent interaction mechanism is designed, and a set of dormant agent service collection is designed according to the mechanism, including dormant handshake service, dormant registration service, dormant update service, dormant notification service, dormant wake-up notification service as well as the dormant confirmation service. The present invention introduces a dormancy agent function into the OPC UA server without changing the OPC UA client, and satisfies the dormancy requirements of energy-limited wireless field devices.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to an OPCUA sleep agent method suitable for wireless field devices. Background technique [0002] An important idea of ​​the Industrial Internet of Things is to connect industrial systems and analyze data and perform related actions to improve performance and efficiency. The implementation of the Internet of Things requires changes in the organizational design and expansion of industrial systems, the most logical way is to integrate existing automation equipment through standard, secure communication protocols. OPC UA can not only exchange data, but also provide information modeling capabilities and a secure, platform-independent communication method. It provides a common technical and semantic operation layer for M2M communication, which is crucial to the realization of the Industrial Internet. . The OPC UA Unified Architecture provides industry with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04W52/02
CPCH04L67/14H04W52/0209H04L67/56Y02D30/70
Inventor 王平王恒蒲宬亘
Owner CHONGQING UNIV OF POSTS & TELECOMM
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