Energy harvesting apparatus and methods for detecting a vibratory signal
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United States of America
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May 10, 2022
Grant Date -
Oct 1, 2020
app pub date -
May 10, 2017
filing date -
May 10, 2017
priority date (Note) -
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Abstract
A vibration transducer module for detecting a vibratory signal, comprising a base, a spring connected to the base at a first location, a mass mechanically coupled to the spring at a second location remote from the first location, and a wall configured to position a first wall electrode and a second wall electrode a selected distance from the first location, the conductive element positioned and sized to contact the first wall electrode and the second wall electrode. The mass comprises a conductive element, and an energy harvester to provide a first voltage signal. The energy harvester may comprise a piezoelectric material or be construct as a SAW device. The module may be combined with a rectifier and an oscillator to form a vibration sensor.
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