Activities per year
Abstract
Battery-free sensor nodes rely solely on energy harvested from the environment and thus employ supercapacitors as energy storage to allow perpetual operation in absence of ambient energy. To guarantee that the sensor nodes can survive in periods where no harvested energy is available, it is crucial to accurately estimate the lifetime of these devices. However, as we show experimentally in this paper, an accurate lifetime estimation is non-trivial due to the supercapacitors’ complex discharge characteristics (e.g., leakage currents) and large capacitance tolerances. After showing that empirical data capturing the supercapacitors’ characteristics is essential towards an accurate estimation of the system’s lifetime, we introduce an enhanced leakage model that is computationally lightweight and evaluate its accuracy experimentally.
Original language | English |
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Title of host publication | Proceedings of the 10th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems (ENSsys '22) |
Publication status | Published - 6 Nov 2022 |
Event | 10th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems: ENSsys 2022 - Boston, United States Duration: 6 Nov 2022 → … |
Workshop
Workshop | 10th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems |
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Abbreviated title | ENSsys '22 |
Country/Territory | United States |
City | Boston |
Period | 6/11/22 → … |
Keywords
- Battery-Free Systems
- Supercapacitors
- Sensor Nodes
- Leakage
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Fields of Expertise
- Information, Communication & Computing
Activities
- 1 Talk at conference or symposium
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Leakage-Aware Lifetime Estimation of Battery-Free Sensor Nodes powered by Supercapacitors
Hannah Brunner (Speaker)
6 Nov 2022Activity: Talk or presentation › Talk at conference or symposium › Science to science
Prizes
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Best Paper Award
Brunner, Hannah (Recipient), Boano, Carlo Alberto (Recipient) & Römer, Kay Uwe (Recipient), 6 Nov 2022
Prize: Prizes / Medals / Awards