An information integration system and method based on OPC UA

An information integration system and information integration technology, applied in the field of OPCUA-based information integration systems, can solve problems such as increasing the complexity of data acquisition devices and complicated access to OPC servers, and achieve the effect of accelerating the process of digital and intelligent development

Inactive Publication Date: 2019-01-22
深圳市智能机器人研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emergence of OPC allows devices and drivers from different manufacturers to flexibly connect and exchange information, but traditional OPC server access is still very complicated. For different types of data access, different access programs need to be developed, including data access (DA) , Alarms and Events (AE), and Historical Data Access (HDA), etc.
For example, to obtain the current value of a temperature sensor, a high temperature event, and the historical average value of temperature, three different OPC server programs must be developed separately, which greatly increases the complexity of the data acquisition device

Method used

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  • An information integration system and method based on OPC UA
  • An information integration system and method based on OPC UA
  • An information integration system and method based on OPC UA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, an information integration system based on OPC UA includes a device layer, an OPC UA server and a workshop control layer, the device layer includes a plurality of PLC controllers for controlling production equipment, and the OPC UA server is connected to the workshop The control layer is connected to multiple PLC controllers;

[0037] The PLC controller is used to obtain status information and control information of the production equipment, and sends the obtained information to the OPC UA server;

[0038] The OPC UA server is used to receive the information transmitted by each PLC controller, and store the received information according to the preset method;

[0039] The workshop control layer is used to communicate with the OPC UA server according to the OPC UA protocol standard, and read and store the information in the OPC UA server, so as to realize the information integration of the equipment layer.

[0040] The working principle of th...

Embodiment 2

[0050] Such as figure 2 As shown, an OPC UA-based information integration method includes the following steps:

[0051] A1. After the OPC UA server is connected to each PLC controller, the OPC UA server adds and configures the communication channel of each PLC controller, and establishes an address space corresponding to each PLC controller on the OPC UA server.

[0052] A2. Each PLC controller obtains and stores the status information and control information of the production equipment, and sends the obtained information to the OPC UA server.

[0053] A3. The OPC UA server stores the received information in a preset way.

[0054] Wherein, step A3 specifically includes: the OPC UA server stores the received information of each PLC controller in the address space corresponding to each PLC controller respectively.

[0055] A4. The workshop control layer communicates with the OPC UA server according to the OPC UA communication standard, and reads and stores the information in ...

specific Embodiment 1

[0059] refer to image 3 , the following will be explained in detail in conjunction with the example of the workshop control layer reading the rotational speed of the motor in real time, and the motor is provided with a corresponding motor PLC controller.

[0060] (1) Use KEPServerEX as the OPC UA server, add and configure the channel that supports the communication protocol of the PLC controller of the motor, and add the drive interface, and then add the address space corresponding to the PLC register address under the device.

[0061] (2) The PLC controller obtains the speed information of the motor in real time, and after storing the speed information in the register D1002 address, sends the speed information to the OPC UA server.

[0062] (3) After the OPC UA server receives the speed information, it stores it in the address space corresponding to the PLC controller of the motor, such as recording it in the data label D1002.

[0063] (4) The OPC UA client accesses the OPC...

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Abstract

The invention discloses an information integration system and a method based on OPC UA, wherein, the method comprises the following steps: each PLC controller obtains and stores the state informationand control information of the production equipment, and sends the obtained information to the OPC UA server; the OPC UA server sends the obtained information to the OPC UA server. The OPC UA server stores the received information in a preset manner. The workshop control layer communicates with the OPC UA server according to the OPC UA communication standard, and reads and stores the information in the OPC UA server to realize the information integration of the equipment layer. The invention stores the information of each PLC device by an OPC UA server. The workshop control layer adopts OPC UAstandard to access the OPC UA server, thus effectively realizing the information integration of multi-heterogeneous equipment, accelerating the digital and intelligent development process of factorymanagement and control, which can be widely used in the field of information integration technology.

Description

technical field [0001] The invention relates to the technical field of information integration, in particular to an OPC UA-based information integration system and method. Background technique [0002] At present, my country has many technical deficiencies in promoting the construction of smart factories. One of the key technologies is the information integration technology of software for workshop equipment and factory equipment. Made in my country 2025 only recommends OPC UA as the technical standard for information integration in the top-level design of intelligent manufacturing. Research in this area is still in its infancy. And there are too few theoretical and applied researches on the OPC UA standard in the integration of multiple heterogeneous information in the workshop, which cannot meet the needs of the current domestic smart factory construction for this aspect of theory and technology. [0003] The construction of smart factories is based on equipment networkin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06H04L29/08
CPCH04L41/024H04L41/044H04L41/0823H04L67/025H04L67/12H04L67/34H04L69/16H04L69/30H04L67/56
Inventor 文贤鹤陈和平
Owner 深圳市智能机器人研究院
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