Semi-Adaptive, Reliability Oriented EH-WSN Energy Management Algorithm

The deployment of Wireless Sensor Nodes which often deploy in large number, are required to be self-sustainable by utilizing Energy Harvesters for harvesting ambient energy as the node's power source. Several energy managements schemes have been proposed, dealing with the intermittent power generation problem introduced by the harvester. However, reliability and transmission consistency of the node are not their primary concern. This study proposes an Energy harvesting powered Wireless Sensor node energy management algorithm which balances between transmitting data with desired interval and providing sensor network reliability by transmitting the nodes status in low harvesting rate. The simulation results show that, with the proposed algorithm the node is able to provide an average 15 second interval data transmission under fluctuating harvesting rate, verified their status periodically and also gives more consistency in data acquisition which is necessary in monitoring application.