Browsing by Author "Nbokassem, Mohammad Waleed"
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- Modelling and analysis of piezoelectric energy harvesterPublication . Nbokassem, Mohammad Waleed; Pereira, Rita Marcos Fontes MurtaEnergy harvesting based on piezoelectric harvesters became a subject of interest in recent years, mainly due to its applications in low power devices such as wireless sensors. The harvested energy applied into piezoelectric sensors does not only depends on vibration input level but also depends on piezoelectric material properties. A description of working principle of vibration piezoelectric energy harvester is presented, starting with piezoelectric effect the discovery, type of the piezoelectric sensor and piezoelectric sensor materials. A mathematical model of piezoelectric film is addressed and implemented in simulation software in order to simulate the QP20W piezo film sensor considered in this study. The EFM32 Giant Gecko Starter Kit and Simplicity Studio® software, are used to validate the developed model and an analysis of macro-scale of piezoelectric energy harvester system is performed. A laboratorial implementation of a vibration on off switch based on piezoelectric sensor is accomplished in order to demonstrate a simple application of piezoelectric sensors.