Abstract
Networks of sensors for different measured variables increasingly form the backbone for a variety of applications in, for example, industry, mechanical engineering and environmental monitoring. The merging of data (sensor fusion) plays a central role in the application and is generally a well investigated research area. However, the consideration of metrological basic principles such as calibration, measurement uncertainties and thus traceability to the SI system of units for comparable and reproducible measurement results has been investigated comparatively little. This article discusses fundamental questions, presents approaches to solutions from the currently running EMPIR project “Metrology for the Factory of the Future” (Met4FoF) and gives an outlook on future fields of research. The article focuses on the field of application of the so-called “Industry 4.0” as the “factory of the future”.
Zusammenfassung
Netzwerke von Sensoren für verschiedene Messgrößen stellen zunehmend das Rückgrat für eine Vielzahl von Anwendungsgebieten in beispielsweise Industrie, Maschinenbau und Umweltüberwachung dar. Dabei spielt das Zusammenführen der Daten (Sensorfusion) eine zentrale Rolle in der Anwendung und ist im Allgemeinen ein gut untersuchtes Forschungsgebiet. Die Berücksichtigung metrologischer Grundprinzipien wie Kalibrierung, Messunsicherheiten und damit Rückführung auf das SI-Einheitensystem für vergleichbare und reproduzierbare Messergebnisse ist jedoch vergleichsweise wenig untersucht. Dieser Beitrag diskutiert Grundsatzfragen, stellt Lösungsansätze aus dem aktuell laufenden EMPIR-Projekt “Metrology for the Factory of the Future” (MetUFoF) vor und gibt einen Ausblick auf zukünftige Forschungsfelder. Dabei fokussiert sich der Artikel auf das Anwendungsfeld der sog. „Industrie U.W“ als „Fabrik der Zukunft“.
Article note
A German version of this article was published in tm – Technisches Messen, vol. 86, 2019, pages 623–629
Funding source: European Association of National Metrology Institutes
Award Identifier / Grant number: 17IND12
Funding statement: Parts of this work have been developed within the research project 17IND12 Met4FoF of the European Metrology Programme for Innovation and Research (EMPIR). EMPIR is jointly funded by the countries participating in EMPIR in EURAMET and the European Union.
About the authors
Sascha Eichstädt is the working group leader of the Physikalisch-Technische Bundesanstalt (PTB) group “Coordination Digitalization” of the presidential staff. He received his Diploma in Mathematics in 2008 at the HU Berlin, and his PhD in Theoretical Physics in 2012 at the TU Berlin. From 2008 to 2017 he joined the group “Mathematical modelling and data analysis” at PTB. His main research areas are signal processing and sensor networks.
Björn Ludwig is a software engineer at Physikalisch-Technische Bundesanstalt (PTB) in the working group “Coordination Digitalization” of the presidential staff. He received his B. Sc. in Mathematics with Computer Science as minor subject at the FernUniversität in Hagen in 2017. Since mid 2019 he is studying in the Master’s program of Mathematics at the TU Berlin. Current areas of interest are the application of continuous development techniques in software engineering and metrological research.
Acknowledgment
We would like to thank the project partners of the EMPIR project “Metrology for the factory of the future” (Met4FoF), whose input from discussions, project meetings and reports were partly the basis for this contribution.
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