Energy Level Based Transmission Power Control Scheme for Energy Harvesting WSNs

A sensor network system which uses wind power as energy harvesting resource and ultra-capacitor as energy storage.By analyzing the power recharging,leakage and energy consumption rate,a novel energy level based transmission power control scheme(EL-TPC) is produced.In EL-TPC scheme,the transmission power is classified into three levels which correspond to specified communication requirements.By adapting the nodes' operation pattern,hierarchical network architecture can be formed,which prioritizes the use of high energy level,fast charging and leaking nodes to save the energy of uncharged nodes.The scheme is implemented in a building surface mounted,wind power collected wireless sensor network system called BSWPWSN,which aims to monitoring the usage pattern of air conditioners and the outdoor temperature.The results show that EL-TPC scheme can significantly extend the entire network lifetime.