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Energy-autonomous On-rotor RPM Sensor Using Variable Reluctance Energy Harvesting
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.ORCID iD: 0000-0003-3222-7165
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.ORCID iD: 0000-0002-8382-0359
Dept. of Information Technology and Electrical Engineering, ETH Zurich.ORCID iD: 0000-0003-0368-8923
Dept. of Information Technology and Electrical Engineering, ETH Zurich.ORCID iD: 0000-0002-4554-7937
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2019 (English)In: 2019 IEEE 8th International Workshop on Advances in Sensors and Interfaces (IWASI), IEEE, 2019, p. 175-180, article id 08791251Conference paper, Published paper (Refereed)
Abstract [en]

Energy-autonomous wireless sensor systems have the potential to enable condition monitoring without the need for a wired electrical infrastructure or capacity-limited batteries. In this paper, a robust and low-cost energy-autonomous wireless rotational speed sensor is presented, which harvests energy from the rotary motion of its host using the variable reluctance principle. A microelectromechanical system (MEMS) gyroscope is utilized for angular velocity measurements, and a Bluetooth Low Energy System-on-Chip (SoC) transmits the acquired samples wirelessly. An analysis on the individual subsystems is performed, investigating the output of the energy transducer, the required energy by the load, and energy losses in the whole system. The results of simulations and experimental measurements on a prototype implementation show that the system achieves energy-autonomous operation with sample rates between 1 to 50 Hz already at 10 to 40 rotations per minute. Detailed investigations of the system modules identify the power management having the largest potential for further improvements.

Place, publisher, year, edition, pages
IEEE, 2019. p. 175-180, article id 08791251
Keywords [en]
Transducers, Energy harvesting, Wireless sensor networks, Sensor systems, Velocity control, Wireless communication, Wheels
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-36839DOI: 10.1109/IWASI.2019.8791251Scopus ID: 2-s2.0-85071415267ISBN: 978-1-7281-0557-4 (electronic)ISBN: 978-1-7281-0558-1 (print)OAI: oai:DiVA.org:miun-36839DiVA, id: diva2:1342260
Conference
2019 IEEE 8th International Workshop on Advances in Sensors and Interfaces (IWASI)
Projects
SMART (Smarta system och tjänster för ett effektivt och innovativt samhälle)
Funder
Knowledge Foundation, ASIS 20140323Vinnova, 2017-03725Available from: 2019-08-13 Created: 2019-08-13 Last updated: 2019-09-24Bibliographically approved

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Xu, YeBader, SebastianOelmann, Bengt

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