Proposal of battery free self sensing wireless system by magnetostrictive vibration power generation device

Abstract

In the practical application of IoT in recent years, button batteries are typically used for communication modules and sensors. However, since these have a finite lifetime, there is a drawback in that it requires time and effort for replacement. On the other hand, we are conducting research on vibration power generation to replace batteries. Therefore, in this research, the relationship between the generated voltage of the device and the velocity of the device installation location is considered, and the velocity is detected from the generated voltage based on it. We also propose a self-sensing system that can operate the communication module with the same power, transmit the generated voltage, and calculate the velocity.