Piezoelectric vibration energy harvesters have demonstrated the potential for sustainable generation from diverse ambient sources in context of low-powered micro-scale systems. However, challenges remain concerning harvesting more power low-frequency input excitations and broadband random excitations. To address this, here we propose a purely mechanical approach by employing inertial amplifiers...

A considerable amount of ambient vibration energy spreads over an ultra-low frequency spectrum. However, conventional resonant-type linear harvesters usually operate within high and narrow bands, which cannot match the frequencies many sources. If excitation deviates a bit from natural harvester, harvesting performance will deteriorate drastically. Because characteristic, it is challenging to r...

a portable and light pneumatic branch shake system was designed and manufactured in this research for harvesting fruits that can be harvested by shaking branch. required air flow and electric current are provided for operating system from category containing electrical generator and air compressor on wheelbarrows and portable chassis. vibration is equipped by programmable logic controller (plc)...

This paper presents a review of MEMS based piezoelectric energy harvesting for low frequency and low power applications. An introduction to MEMS and its components along with the concept of energy harvesting is presented. The paper also presents a device configuration of cantilever based basic components of MEMS energy harvesters, i.e. unimorph, bimorph. Results of different designs for MEMS en...

This paper presents a self-powered piezoelectric energy harvesting circuit using frequency conversion. A vibration energy harvesting principle is introduced. Due to a capacitive characteristic of the piezoelectric vibration transducer, an energy harvesting circuit is proposed for matching the capacitive impedance. The energy harvesting circuit consists of a matching circuit with up-conversion, ...

Energy harvesting from vibration for low-power electronics has been investigated intensively in recent years, but rotational energy harvesting is less investigated and still has some challenges. In this paper, a methodology for low-speed rotational energy harvesting using piezoelectric transduction and frequency up-conversion is analysed. The system consists of a piezoelectric cantilever beamwi...