Powering wireless sensor nodes with micro fuel cells

  • Authors:
  • Michele Magno;Davide Brunelli;Luca Benini;Roberta Giuffrida;Salvatore Leonardi;Andrea Lazzara

  • Affiliations:
  • University of Bologna, Bologna, Italy;University of Trento, Trento, Italy;University of Bologna, Bologna, Italy;STMicroelectronics, Catania, Italy;STMicroelectronics, Catania, Italy;STMicroelectronics, Catania, Italy

  • Venue:
  • Proceedings of the 1st International Workshop on Energy Neutral Sensing Systems
  • Year:
  • 2013

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Abstract

A novel approach to achieve long term system operation is using hydrogen fuel cells, which feature much higher energy density if compared with standard batteries. In this demonstrator we show a power unit which activates the hydrogen flow through an electrovalve to recharge the batteries, minimizing hydrogen waste and significantly boosting lifetime. Experimental results demonstrate 85% of efficiency.