Abstract
Digital Twins (DT) in industrial cyber-physical systems are the key enabling technology for Industry 4.0. Services are an essential part of almost every DT concept, but their interaction is usually implementation-specific since no common guidelines are available. This work identifies some fundamental requirements for a DT service framework based on applications identified in corresponding literature. Based on these requirements, a service framework architecture is proposed. The architecture utilizes Semantic Web technology and a workflow engine for service orchestration to support the fulfilment of the identified requirements. As a case study for sensor data evaluation of an industrial process, a proof-of-concept implementation is presented, showing the feasibility and suitability of the proposed DT service framework architecture.
Highlights
The fourth industrial revolution or Industry 4.0 is changing business within the industry, caused by the rapid development of Information and Communication Technology (ICT) [1]
This 5D-DT approach is used in [10] as the basis for the Generic Digital Twin Architecture (GDTA), which is aligned with the six Information Technology (IT) layers of the Reference Architecture Model Industry 4.0 (RAMI 4.0) [11] to structure the elements of the GDTA model
The proposed DT service framework architecture was evaluated with the proof-ofconcept implementation for the presented use-case
Summary
The fourth industrial revolution or Industry 4.0 is changing business within the industry, caused by the rapid development of Information and Communication Technology (ICT) [1]. A very interesting concept is the Five-Dimensional Digital Twin (5D-DT) presented in [8], where five elements or dimensions for a DT are specified: “Physical Entity”, “Virtual Entity”, “Connection”, “Data” and “Services”. In this conceptual model, the aspect of services is emphasized as an important part of the DT. The aspect of services is emphasized as an important part of the DT This 5D-DT approach is used in [10] as the basis for the Generic Digital Twin Architecture (GDTA), which is aligned with the six Information Technology (IT) layers of the Reference Architecture Model Industry 4.0 (RAMI 4.0) [11] to structure the elements of the GDTA model. Services are only considered in a more general and abstract way in the GDTA
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