NodeRED nodes for modeling Digital Twins

A set of NodeRED nodes for modeling Digital Twins with semantics.

More information can be found here: A methodology for creating semantic digital twin models supported by knowledge graphs

@INPROCEEDINGS{steinmetz2022,  
author={Steinmetz, Charles and Schroeder, Greyce N. and Sulak, Adam and Tuna, Kaan and Binotto, Alecio and Rettberg, Achim and Pereira, Carlos Eduardo},  booktitle={2022 IEEE 27th International Conference on Emerging Technologies and Factory Automation (ETFA)},   
title={A methodology for creating semantic digital twin models supported by knowledge graphs},   
year={2022},
pages={1-7},  
doi={10.1109/ETFA52439.2022.9921499}
}

Simple example

Nodes

• dt-asset: represents an observable asset from the real world. It can be composed by other assets.
• dt-event: events can happen internally or externally and can be used to trigger actions or change properties.
• dt-action: an asset can have actuation methods such as open(), close()...
• dt-property: used to define a property of an asset (temperature, humidity...)
• dt-relation: it can be used to (semantically) represent the relation between two nodes.
• dt-graph: it watches the model and creates/updates a knowledge graph everytime the diagram is deployed.