DocumentCode :
3287073
Title :
AmbiMax: Autonomous Energy Harvesting Platform for Multi-Supply Wireless Sensor Nodes
Author :
Park, Chulsung ; Chou, Pai H.
Author_Institution :
Center for Embedded Comput. Syst., California Univ., Irvine, CA
Volume :
1
fYear :
2006
fDate :
28-28 Sept. 2006
Firstpage :
168
Lastpage :
177
Abstract :
AmbiMax is an energy harvesting circuit and a supercapacitor based energy storage system for wireless sensor nodes (WSN). Previous WSNs attempt to harvest energy from various sources, and some also use supercapacitors instead of batteries to address the battery aging problem. However, they either waste much available energy due to impedance mismatch, or they require active digital control that incurs overhead, or they work with only one specific type of source. AmbiMax addresses these problems by first performing maximum power point tracking (MPPT) autonomously, and then charges supercapacitors at maximum efficiency. Furthermore, AmbiMax is modular and enables composition of multiple energy harvesting sources including solar, wind, thermal, and vibration, each with a different optimal size. Experimental results on a real WSN platform, Eco, show that AmbiMax successfully manages multiple power sources simultaneously and autonomously at several times the efficiency of the current state-of-the-art for WSNs
Keywords :
secondary cells; supercapacitors; telecommunication power supplies; wireless sensor networks; AmbiMax; Eco; MPPT; autonomous energy harvesting platform; battery aging problem; energy harvesting circuit; energy storage system; maximum power point tracking; multi-supply wireless sensor nodes; supercapacitor; Aging; Batteries; Circuits; Digital control; Energy management; Energy storage; Impedance; Sensor systems; Supercapacitors; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensor and Ad Hoc Communications and Networks, 2006. SECON '06. 2006 3rd Annual IEEE Communications Society on
Conference_Location :
Reston, VA
Print_ISBN :
1-4244-0626-9
Type :
conf
DOI :
10.1109/SAHCN.2006.288421
Filename :
4068119
Link To Document :
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