Design Techniques for Wireless Sensor Network Nodes Powered by Ambient Energy Harvesting

This paper outlines some techniques for the design of wireless sensor networks nodes. The nodes obtain power from small transducers that convert the energy available in their surroundings. Described examples cover thermoelectric and photovoltaic powered nodes, which are realized using off-the-shelf devices. Experimental results obtained by the practical implementation of the nodes in the network are presented. The paper also highlights the potentials of the PCB technology for improving the performances of the nodes.