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Proceedings of the 2010 International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT 2010)

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International Association of Computer Science and Information Technology (IACSIT)
International Association of Computer Science and Information Technology (IACSIT)
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ISBN:
9780791859544
No. of Pages:
590
Publisher:
ASME Press
Publication date:
2010

It is well known that human body contains considerable kinetic energy when in motion, so it is ideal to exploit such kinetic energy to power portable electronics. This paper proposed a novel generator, with reasonable dimension and affordable weight, to harvest human body's kinetic energy and convert it to electricity for mobile electronic devices. The generator uses an eccentric rotor, made of permanent magnets, to ‘catch’ the human body's motion and to produce changing magnetic field, where the wire coils as the stator will generate current due to the electromagnetic effect. As a typical application, the generator can be worn on the wrist as the watch, in which case simulation results show that the generator, 40mm in diameter and 50g in weight, can produce 30mW during normal walking.

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