Abstract
The movement of the creature and the almost wave in the ocean is a low vibration of random energy with a frequency range of 0.1–10 Hz. Because of its low frequency, the opinion has been that electrical energy generation from this low-frequency wave motion through the electromagnetic induction method is difficult. In this study, an electrical generator was created by the electromagnetic induction method by putting a small mass of ferromagnetic powder in nonmagnetic fluid. A broadband vibration energy harvesting model was created in which vibrations are broadened through a multi-degree of freedom oscillation system using ferromagnetic powder. To generate electricity from low-frequency vibrations (1 Hz or less), a non-resonant type model was created by adding fluid to the ferromagnetic powder model and the simulation results confirmed using computational fluid dynamics by creating a working energy harvesting device.
Highlights
As IoT develops in recent years, various sensors have been applied to everyday life and many industrial fields from distribution, traffic, infrastructure maintenance, medical care, healthcare, security, and disaster prevention
Sources of energy utilized by energy harvesting include electromagnetic waves [6,7,8,9], thermal energy [10,11,12,13], chemical energy [14, 15], solar energy [16,17,18,19], and kinetic energy [20,21,22,23]
Mitcheson [45] and Ju et al [53] created a motion equation for calculating energy generated in single mass point energy harvesting systems without fluid, and Zhang et al [49] created an equation for two mass point systems without fluid
Summary
As IoT develops in recent years, various sensors have been applied to everyday life and many industrial fields from distribution, traffic, infrastructure maintenance, medical care, healthcare, security, and disaster prevention. In the face of this technological tide, energy harvesting is expected to provide an independent power supply to sensor nodes by acquiring energy from the environment [1,2,3,4,5]. Energy harvesting technologies which generate electricity using naturally occurring energy are classified roughly by the energy source. Sources of energy utilized by energy harvesting include electromagnetic waves [6,7,8,9], thermal energy [10,11,12,13], chemical energy [14, 15], solar energy [16,17,18,19], and kinetic energy [20,21,22,23]. Kinetic energy is distributed unevenly throughout the environment and is easy to use. One method of harvesting kinetic energy is to use a trembler to
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