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A Production Data Acquisition Method in Double Subscription Mode

A technology of production data and collection method, applied in the field of information, can solve the problem that the data collection module cannot obtain equipment collection information in real time and stably, and achieve the effect of improving real-time performance and improving system data transmission performance.

Active Publication Date: 2021-05-25
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a production data collection method in a double subscription mode, which solves the problem that the data collection module cannot obtain the collection information of the equipment in real time and stably in the manufacturing execution system

Method used

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  • A Production Data Acquisition Method in Double Subscription Mode
  • A Production Data Acquisition Method in Double Subscription Mode
  • A Production Data Acquisition Method in Double Subscription Mode

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

[0019] Such as figure 1 Shown is the structural relationship diagram of the present invention.

[0020] Firstly, establish a data collection point for each automation device at the equipment layer, that is, a PLC collection point, and at the same time define corresponding variables in OPCSERVER, requiring each variable to correspond to the PLC collection point one-to-one.

[0021] Create a WCF service on the OPC SERVER server as an OPC client, and subscribe to the OPCSERVER variable point on the client, so as to realize the trigger linkage between the bottom device collection point and the upper layer WCF service, and build the WCF service on the OPC SERVER server to realize The OPC client and server are on the same machine, which effectively avoids the complicated configuration work of OPC cross-network communication. The upper-layer client so...

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Abstract

The present invention relates to a method for collecting production data in a double subscription mode, including a device layer, establishing a data collection point for each device at the device layer, defining corresponding variables in OPC SERVER; creating a WCF service as a client of OPC SERVER, and The OPC client subscribes to the variables corresponding to the equipment data collection points; the WCF client is created in the manufacturing execution system and subscribed in the WCF server. The present invention utilizes the subscription technology of OPC and the subscription and release technology of WCF to realize the data-triggered real-time transmission between the collection point of the bottom equipment and the software of the upper production and manufacturing execution system, which improves the real-time performance and high efficiency of data transmission and improves the efficiency of the system. data transfer performance.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a method for collecting production data in a double subscription mode. Background technique [0002] The data source of manufacturing execution systems in discrete industries generally comes from the collection of production data on site. Therefore, the accuracy, timeliness, and completeness of production data collected on site are the cornerstones of the entire system, and whether the entire manufacturing execution system can truly reflect on-site The key to production is that there are usually two ways to collect production data: 1. Manual collection by on-site operators; 2. Automatic acquisition of production data by connecting with the underlying equipment. In order to ensure the timeliness and accuracy of data collection and reduce the workload of workers, the system tends to automatically obtain production data by connecting with the underlying equipment when relevant ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04L67/12
Inventor 常大亮彭慧孟付姜丽苹
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI