Abstract
This chapter presents an overview of energy-harvesting (EH) methods that can be used for future Internet of Things (IoT) applications. Wireless sensors in applications such as healthcare systems, automobiles, and building automation systems can be powered by deriving electric energy from the surroundings such as solar energy, mechanical vibration energy, heat energy, and wind energy. Traditionally, these wireless sensors are powered by batteries. But, battery-powered wireless sensors have some critical problems like lower life span and higher battery replacement cost. In some harsh environmental applications, even replacement of batteries at regular intervals of time is very difficult. There comes the need for EH systems. Wireless sensor networks are the basic units of majority of IoT applications. This chapter describes various EH systems that can be used in future IoT applications.
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