Electric control system

An electronic control system, industrial computer technology, applied in the field of Internet of Things

Pending Publication Date: 2022-02-18
CHINA TOBACCO MACHINERY TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application software can process the data according to these tags, but data loss cannot be avoided

Method used

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  • Electric control system
  • Electric control system
  • Electric control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 2 As shown, an electronic control system includes a man-machine interface industrial computer, an OPC UA OPC UA (OPC Unified Architecture, OPC Unified Architecture) server;

[0038]An OPC UA client and a man-machine interface program are installed in the man-machine interface industrial computer;

[0039] Described OPC UA client comprises OPC UA active client, OPC UA backup client, initialization unit, monitoring unit, start backup unit;

[0040] The initialization unit is used to complete the initialization of the OPC UA active client and the OPC UA backup client, so that the OPC UA active client establishes normal communication with the OPC UA server;

[0041] The monitoring unit is used to monitor whether the OPC UA active client communicates normally with the OPC UA server;

[0042] The starting backup unit is used to start the OPC UA backup client and establish a communication connection with the OPC UA server when the OPC UA active client and the OPC UA ...

Embodiment 2

[0046] Based on the electronic control system of Implementation 1, the OPC UA server is built in the servo controller;

[0047] The OPC UA active client, under normal conditions, obtains the variable value from the servo controller through data subscription and passes it to the human-machine interface program.

[0048] Preferably, the servo controller is a servo controller of a cigarette box packing machine.

[0049] Preferably, the monitoring unit, when it detects that the OPC UA active client cannot communicate normally with the OPC UA server, controls the man-machine interface industrial computer to output a warning message, prompting the user that the OPC UA active client is invalid, and needs to for further processing.

Embodiment 3

[0051] Based on the electronic control system implementing one, the process of the initialization unit completing the initialization of the OPC UA active client is: in the OPC UA active client program, first call the creation (CreateSession) service to create a session 1 with the OPC UA server, and obtain the session 1 identifier (SessionID), and then call the subscription (Subscription) service to create multiple subscriptions in session 1, and obtain the list of connection status variables (NodeId) of the OPC UA active client that needs to be monitored, so that the OPC UA active client is the same as the OPC UA active client The server establishes normal communication;

[0052] The process that described initialization unit completes the initialization of OPC UA backup client is: in man-machine interface program, at first call creation (CreateSession) service to create OPC UA backup client with session 2 of OPC UA server, then call subscription (Subscription) service In sess...

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PUM

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Abstract

The invention discloses an electric control system which comprises a human-computer interface industrial personal computer and an OPC UA server. An OPC UA client and a human-computer interface program are installed in the human-computer interface industrial personal computer; the OPC UA client comprises an OPC UA activity client, an OPC UA backup client, an initialization unit, a monitoring unit and a backup starting unit; the initialization unit is used for completing initialization of the OPC UA active client and the OPC UA backup client, so that normal communication is established between the OPC UA active client and the OPC UA server; the monitoring unit is used for monitoring whether the OPC UA activity client normally communicates with the OPC UA server or not; and the backup starting unit is used for starting the OPC UA backup client to establish communication connection with the OPC UA server when the OPC UA active client and the OPC UA server cannot normally communicate. According to the electric control system, data of the server side can be continuously obtained when the OPC UA client side is invalid suddenly, monitoring variable data are prevented from being lost, and the integrity of data display and recording of a human-computer interface is guaranteed.

Description

technical field [0001] The invention relates to the Internet of Things technology, in particular to an electric control system. Background technique [0002] In the field of electrical control of cigarette box packaging machines, PLC (programmable logic controller), servo controller, and man-machine interface constitute a complete electrical control system. Among them, the man-machine interface obtains the data of the servo controller through the PLC, the servo controller first transmits the data to the PLC, and then the man-machine interface obtains the servo data by accessing the PLC. [0003] In order to enhance the data interaction ability with the outside world, many servo controllers have built-in OPC UA servers. The OPC UA (OPC Unified Architecture, OPC Unified Architecture) protocol was created by the OPC Foundation to provide a new generation of communication protocol that is safe, reliable and independent of manufacturers, and realizes the transmission of raw data...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/1103
Inventor殷晓明龚佳伟万晓文张红代王熙康
OwnerCHINA TOBACCO MACHINERY TECH CENT