Leakage-aware energy synchronization for wireless sensor networks

Ting Zhu, Ziguo Zhong, Yu Gu, Tian He, Zhi-Li Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

139 Scopus citations

Abstract

To ensure sustainable operations of wireless sensor systems, environmental energy harvesting has been regarded as the right solution for long-term applications. In energy-dynamic environments, energy conservation is no longer considered necessarily beneficial, because energy storage units (e.g., batteries or capacitors) are limited in capacity and leakage-prone. In contrast to legacy energy conservation approaches, we aim at energy synchronization for wireless sensor devices. The starting point of this work is TwinStar, which uses ultra-capacitor as the only energy storage unit. To efficiently use the harvested energy, we design and implement leakage-aware feedback control techniques to match local and network-wide activity of sensor nodes with the dynamic energy supply from environments. We conduct system evaluation under three typical real-world settings - indoor, outdoor, and mobile backpack under a wide range of system settings. Results indicate our leakage-aware control can effectively utilize energy that could otherwise leak away. Nodes running leakage-aware control can enjoy 70% more energy than the ones running non-leakage-aware control and application performance (e.g., event detection) can be improved significantly.

Original languageEnglish (US)
Title of host publicationMobiSys'09 - Proceedings of the 7th ACM International Conference on Mobile Systems, Applications, and Services
Pages319-332
Number of pages14
DOIs
StatePublished - Nov 30 2009
Event7th ACM International Conference on Mobile Systems, Applications, and Services, MobiSys'09 - Krakow, Poland
Duration: Jun 22 2009Jun 25 2009

Publication series

NameMobiSys'09 - Proceedings of the 7th ACM International Conference on Mobile Systems, Applications, and Services

Other

Other7th ACM International Conference on Mobile Systems, Applications, and Services, MobiSys'09
CountryPoland
CityKrakow
Period6/22/096/25/09

Keywords

  • Energy
  • Leakage
  • Ultra-capacitor
  • Wireless sensor networks

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