ABSTRACT
This chapter presents energy harvesting solutions as a power supply option for Internet of Things (IoT) sensor nodes. IoT applications may require millions of sensor devices connected and communicating with each other. These sensor devices will require a power source to operate, and a continuous power source is necessary for continuous data collection. The chapter explores the potential of energy harvesting using these sources including various design topologies for power conditioning circuits. Energy harvesting-based sensors have the capability of extracting energy from the surrounding environment, from sources such as solar, radio-frequency, motion, and electromagnetic sources. Energy harvesting is the key element for the deployment of a large number of wireless sensors for IoT applications. Solar energy harvesting is one of the most efficient energy harvesting techniques to be used in IoT-based sensor networks for outdoor applications. In piezoelectric energy harvesting, mechanical stress and strain results in structural deformation caused by motion and vibrations, which is then converted to electrical energy.
