A diagram of the magnetic levitation vibration energy harvester
is shown in Fig. 1. The energy harvester consists of a levitating magnet,
fixed magnets, guide box and coil. The polarity of the magnets
are arranged so the levitating magnet experiences a repulsive force
due to the fixed magnets. In the diagram, fixed magnets are only
shown on the bottom of the box, but they could also be added to
both top and bottom ends of the box. When the box experiences
an acceleration, the levitating magnet oscillates in the guide box.
Ideally, the frequency of the acceleration on the guide box matches
the resonant frequency of the device to maximize mass movement
and thus maximize power output. As the levitating magnet moves
through the coil wrapped around the box, a voltage is induced on
the coil, producing a current that flows into an attached electrical
load