Secure data storage and service automation for cyber physical production systems through distributed ledger technologies

Titelangaben

Lemme, Gordon ; Nölscher, Kilian ; Bei, Erhao ; Hermeling, Christian ; Ihlenfeldt, Steffen:
Secure data storage and service automation for cyber physical production systems through distributed ledger technologies.
In: Journal of Machine Engineering. Bd. 21 (2021) Heft 1 . - S. 89-97.
ISSN 2391-8071
DOI: https://doi.org/10.36897/jme/131917

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Abstract

In this paper, we use the blockchain technology to design a prototype to secure process data from a 3D-printer. Datastreams are gathered from various sources such as OPC UA servers and autonomous retrofit sensor nodes. This is followed by pre-processing for data reduction, storage in a data model, and the generation of a unique hash value over it. The hash values are stored in a blockchain using appropriate consensus methods, taking into account their temporal origin and production identification number. This also includes the context-related influence of sensor signals on the production process Restrictive access regulations using smart contracts make a partially or fully automated machine tool calibration possible. In this context, we show to realize a process partial or full automation through smart contracts. Physical machine tools and virtual simulations are integrated into the blockchain network to document the stability and performance.