Abstract
Recent developments in the area of cyber-physical systems (CPSs) and Internet of Things (IoT) are among the drivers for the emergence of the Industry 4.0 concept, setting new requirements for the architecture, technology, and design approaches of modern industrial systems. Industry 4.0 assumes a higher level of intelligence, and thus autonomy of the systems and subsystems, and a larger focus on the analysis of gathered data for further utilization. The Virtual Factory Open Operating System (vf-OS) project is intended to respond to some of these key challenges, in particular for the smart factory application domain. Complementarily, data and knowledge storage and processing are also in the scope of vf-OS. This article introduces the semantic management component of vf-OS, which aims to analyze the interrelations among stored entities, as well as to define the closeness among them to generate meaningful suggestions, which can be later used by other subsystems or operators in a user-friendly way. The semantic managing system makes use of non relational approaches, namely a graph database, which enables data to be represented as graphs for further semantic querying. The developed prototype and an illustrative application case are also presented.
Highlights
Cyber-physical systems (CPSs) have found their application in many areas of human activity, from home automation to large industrial complexes containing hundreds of systems and subsystems
The growing complexity of the modern cyber-physical systems (CPSs) forces to cope with challenges such as interoperability, scalability, and increasing volumes of generated data, which leads to the need of new system architectures and frameworks
Considering weighted ontologies and adaptive ontologies in conjunction with collaborative knowledge base contribute improving for collaborative knowledge base formation
Summary
Cyber-physical systems (CPSs) have found their application in many areas of human activity, from home automation to large industrial complexes containing hundreds of systems and subsystems. In [2] the authors offer insight on how the concept of Industry 4.0 influences the overall state of manufacturing in Europe, with respect to socio-economical aspects such as improved product manufacturability, reduced production time, and reduced negative impact on the environment. In line with this trend, several key projects have been launched in the framework of the European Horizon 2020 program
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