MICRO-SCALE ENERGY HARVESTING SYSTEMS FOR WIRELESS SENSING NODES2013-06-12
MICRO-SCALE ENERGY HARVESTING SYSTEMS FOR
WIRELESS SENSING NODES
Speaker : Dr. Sehwan Kim
Beckmann Laser Institute
Dankook University, Korea
University of California, Irvine, CA, USA
High efficient energy harvesting system (EHS) is one of the fastest growing areas of wireless sensor networks (WSN) with many potential applications. The recent development of subwatt-scale EHS has significantly increased the efficiency and durability, and has enabled ultra-low ambient energy scavenging. .The innovations in maximum power transfer tracking technique, deep-cycled energy storage elements (ESE), reconfigurable supercapacitor array, and ultra-low overhead circuitry have greatly extended the various applications of EHS technology. Many of the micro-scale EHSs that were developed in the last decade started to be applied to WSNs for structural health monitoring (SHM) for sustainable operation of sensing nodes. in real deployment studies. In this talk, I will report several achievements and on-going research projects that focus on deploying EHS to extend the life time of WSNs for SHM. In addition, advances in maximum power point tracking, size and topology considerations for ESEs, several real-world deployed results in conjunction with low-power sensing nodes etc., will also be described. The challenges and opportunities in EHS research will be discussed.