Development And Experimental Validation Of Self-Powered Wireless Vibration Sensor Node Using Vibration Energy Harvester

This paper deals with development of a self-powered solution for wireless vibration sens -ing. An autonomous operation of the proposed vibration sensor node is based on an elec-tromagnetic energy harvesting device which converts kinetic energy of ambient mechanical vibration. Moreover, mechanical vibrations are monitored via electric signal from a piezoelectric patch and the measured signal is transmitted to the monitoring unit. The electromagnetic energy harvester is designed to provide enough power for a signal processing unit and a communication module, enabling the system to operate as a self-powered wireless vibration sensor node. Operation of this system was experimentally val-idated in laboratory environment and examples of vibration monitoring are presented. There is a significant restriction in terms of operation in resonance regime, where the gen-erated power of the kinetic energy harvester is maximal and sufficient for limitless opera-tion of the node. Main aim of this paper is to present a complex system which could be used in many engineering applications, such as aerospace, transportation, or civil structure monitoring.(c) 2021 Elsevier Ltd. All rights reserved.