Energy Harvesting Enabled Wireless Sensor Networks: Energy Model and Battery Dimensioning
Wireless Sensor Networks (WSN) present a pending challenge for a complete deployability due to energy requirements. The Self-Powered WSN approach aims to extend the sensor node life by means of Energy Harvesting. However, the low power density that these energy sources provide compared to the required energy for the communication process creates the necessity of temporal storage. Unfortunately, the random nature of the power sources implies that the energy storage unit might not be able to guarantee the communication at all time, thus giving a certain loss probability, which is a function of the statistics of the harvesting process and the energy storage capacity.