IoT Wearable EH system based on Wrist Motion Kinetic Energy Harvesting

In the past decade, the technological advancement of sensors, embedded systems, and wireless communication, led to the widespread of wearable devices in consumer and medical applications. The replacement of batteries with energy harvesting systems could increase the autonomy of wearable devices, also reducing their volumes. This paper presents a wristband energy harvester obtained by combining a piezoelectric transducer with a power management system. A wearable prototype has been designed and proved in practical application. Energy from wrist motion has been harvested and stored for 60 seconds, and then used to power an LED lamp.