Abstract :
Abstract - Wireless sensor networks (WSNs) may be
considered as the third wave of a revolution in wireless
technology. They promise to have a significant beneficial
impact on many aspects of our human existence. These
benefits include more efficient utilisation of resources, better
understanding of the behaviour of humans, natural and
engineering systems, and increased safety and security.
Pervasive computing also has some possible negative
environmental impacts, particularly in physical waste and
energy consumption. However, one barrier to their fuller
adoption is the need to supply electrical power over extended
periods of time without the need for dedicated wiring.
Energy harvesting provides a potential solution to this
problem in many applications. This paper reviews the
characteristics and energy requirements of typical sensor
network nodes, assesses a range of potential ambient energy
sources, and outlines the characteristics of a wide range of
energy conversion devices.
