Research on Semantic Extension Method of Real-time Data for OPC UA
With the continuous deepening of Industry 4.0,OPC Unified Architecture(OPC UA)will provide technical support for the system seamless integration.On the basic of the seamless integration of the intelligent manufacturing digital shop,the communication between the systems is not only the data transmission,but also the semantic information exchange.Two formats of UA data transmission are binary and XML.They do not have the semantic description capability and cannot fully satisfy the large-scale information sharing of multiple users or groups on the Web.In addition,the expression ability of XML for semantic modeling of complex objects is very limited and it is difficult to express conceptualized model of objects in the problem domain.This paper proposes the semantic extension method of real-time data for OPC UA,which can describe the dynamic data of OPC UA in real time based on Resource Description Framework(RDF)model and extend the data attributes by ontologies.Experimental results show that this method is feasible and effective.It enables the data information of OPC UA to have the ability to interact with more areas of knowledge and improve the ability of expressing data and application value,which lays the foundation for exchange and sharing of semantic-based information.
OPC UA real-time description RDF model ontology semantic extension
Daoqu Geng Yi Wen Qi Gao
College of Automation,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
国际会议
太原
英文
102-110
2018-06-29（万方平台首次上网日期，不代表论文的发表时间）