OLE For Process Control Technology Research Articles

Toward Dynamic Resources Management for IoT-Based Manufacturing

The cyber-physical production system (CPPS), which combines information communication technology, cyberspace virtual technology, and intelligent equipment technology, is accelerating the path of Industry 4.0 to transform manufacturing from traditional to intelligent. The Industrial Internet of Things integrates the key technologies of industrial communication, computing, and control, and is providing a new way for a wide range of manufacturing resources to optimize management and dynamic scheduling. In this article, OLE for process control technology, software defined industrial network, and device-to-device communication technology are proposed to achieve efficient dynamic resource interaction. Additionally, the integration of ontology modeling with multiagent technology is introduced to achieve dynamic management of resources. We propose a load balancing mechanism based on Jena reasoning and Contract-Net Protocol technology that focuses on intelligent equipment in the smart factory. Dynamic resources management for IoT-based manufacturing provides a solution for complex resource allocation problems in current manufacturing scenarios, and provides a technical reference point for the implementation of intelligent manufacturing in Industry 4.0.

Development and Realization of Real-time Data Exchange between OPC Client and Multiple Remote Servers

The submitting of OPC (OLE for Process Control) has promoted the progress of the data collection in process control and industrial automation, and formulated the industry standard for the process real-time data exchange. Aiming at the key problem of ensuring the use of application program as OPC client to link multi-remote OPC server and real-time collect process data in control system, OPC technology and the connection and access technology of multi-remote OPC server were introduced and analyzed in detail. The multi-remote OPC server architecture is developed and analyzed based on the OPC technology and the automation interface. And the OPC client application is developed in order to connecting multi-remote OPC server. Multi-remote OPC server communication case is achieved by the design of test software. Therefore the OPC client can calibrate and acquire progress data though calling the interface provided by the OPC server. Finally by establishing the suitable system architecture, configuring the corresponding environment variable and calling the corresponding test software program, the real-time data exchange between OPC client and multiple remote servers are achieved. This method has been successfully applied to develop the DCS I/O communication and control loop error test software, and provided better performance.

Research and Application of OPC Network Communication in Configuration Software

The network communication between MATLAB and configuration software is established using OPC (OLE for Process Control) technology, which is easily to give full play to generate interactive interface in configuration software and simulation of control object model in MATLAB software. The calculation function of weakness in configuration software is repaired and the control object model and controller is to be isolated. The effective simulation platform for theory research and design of control system is established.

Realization of Real-Time Data Exchange between OPC Client and Multiple Remote Servers

The submitting of OPC (OLE for Process Control) has promoted the progress of the data collection in process control and industrial automation, and formulated the industry standard for the process real-time data exchange. Aiming at the key problem of ensuring the use of application program as OPC client to link multi-remote OPC server and real-time collect process data in control system, OPC technology and the connection and access technology of multi-remote OPC server were introduced and analyzed in detail. This method has been successfully applied to develop the DCS I/O communication and control loop error test software, and provided better performance.

Research on energy consumption detection system based on OPC technology

For developing of energy consumption detection systems, the system integration becomes more and more difficult. The OPC Object Linking and Embedding OLE for process control technology is used to simplify the problem. The system integration can be improved largely and the efficiency can be decreased through the OPC standard interface. First, relevant knowledge about OPC technology is introduced in this paper, and then hardware and software realisation of the energy consumption detection system in Shenyang large-scale public buildings is discussed. By application of OPC technology, the system is simplified at system integration and information sharing and exchange on high-levels are realised.

OPC (OLE for Process Control) based Calibration System for Embedded Controller

During embedded software development of complex control system, the calibration is an important approach to obtain optimal parameters of embedded software. Currently, typical calibration systems are with poor adaptability for various controllers which have different communication interfaces and calibration protocols. In order to solve the problem, an improved architecture for embedded controller calibration system is proposed to support more communication buses and protocols. In this architecture, by introducing OPC (OLE for Process Control) technology, the host software of calibration system is separated into OPC server and client. The OPC server masks the difference of various calibration protocols and detail of communication devices, and provides a unified access interface for controller parameters. The OPC client calibrates and acquires the parameters though calling the interface provided by the OPC server. By the method, when communication device or calibration protocol is varied, only the corresponding OPC server is required to be replaced. Then the details of communication devices and calibration protocols are no longer considered while developing a calibration system, and the generality and openness of the calibration system are enhanced greatly. The calibration system corresponding to the architecture was applied to an engine controller to verify the effectiveness of the method presented.

Component-based design for SCADA architecture

Supervisory control and data acquisition (SCADA) software which is suitable to distributed control systems is a demand for system developers because the characteristics of existing SCADA software packages are hard to satisfy the requirements of distributed systems. For the strengths of component-oriented techniques, this paper proposes a component-oriented architecture of SCADA software to satisfy the demand of distributed control systems. Design pattern and OPC (OLE for Process Control) technology are also used to make the openness for the architecture.