Self‐Powered Sensory Transducers

A sensory transducer is a device that can convert environmental energy or event into a signal/energy that can be stored for further processing. For these conversions, small and low-cost devices are preferred by many engineers. Most of the devices used in such ubiquitous applications work in a hostile environment, where changing or replacing the power module is almost impossible. To overcome these problems, energy scavenging may be the solution. Researchers focus more on such devices because they regenerate power from the environment and can be used for a more extended period with less maintenance monitoring systems with the Internet of Things (IoT). This work summarizes an overview of the low-cost, self-powered sensory transducers used in different areas of applications. The research aims at the different ways to generate/recharge the power sources and their uses on different applications. It also focuses on recent challenges and the future scope of the device. Moreover, the work enlightens on the interrelation of self-powered devices to the evolution of Green IoT.