TY - GEN
T1 - Leakage-aware energy synchronization for wireless sensor networks
AU - Zhu, Ting
AU - Zhong, Ziguo
AU - Gu, Yu
AU - He, Tian
AU - Zhang, Zhi-Li
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
KW - Energy
KW - Leakage
KW - Ultra-capacitor
KW - Wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=70450239995&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70450239995&partnerID=8YFLogxK
U2 - 10.1145/1555816.1555849
DO - 10.1145/1555816.1555849
M3 - Conference contribution
AN - SCOPUS:70450239995
SN - 9781605585666
T3 - MobiSys'09 - Proceedings of the 7th ACM International Conference on Mobile Systems, Applications, and Services
SP - 319
EP - 332
BT - MobiSys'09 - Proceedings of the 7th ACM International Conference on Mobile Systems, Applications, and Services
T2 - 7th ACM International Conference on Mobile Systems, Applications, and Services, MobiSys'09
Y2 - 22 June 2009 through 25 June 2009
ER -