Rotary system mounted piezoelectric generator, self-powered wireless communication terminal and wireless communication system
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United States of America
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Feb 18, 2020
Grant Date -
Oct 26, 2017
app pub date -
Oct 8, 2015
filing date -
Oct 8, 2015
priority date (Note) -
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Abstract
A rotary system mounted piezoelectric generator has a folded beam structure in which the whole or part of a spring is formed with a piezoelectric generation element, in which one end is provided in a drive rotation system and in which a weight is attached to the other end, the degree of freedom of motion of the weight is two or more-dimensional and thus it is possible to easily change the locus thereof. The beam has a spiral structure such that when the drive rotation system is rotated, a centrifugal force applied to the weight is efficiently modulated by a second force other than the centrifugal force. A self-powered wireless communication terminal is operated with an extremely small amount of power consumption by use of a wireless connection control means and a modulation scattering response antenna which perform multilevel phase-shift keying (MPSK).
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