Power-free gyroscope using surface acoustic wave, and wired/wireless method for measuring angular velocity
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United States of America Patent
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Dec 27, 2016
Grant Date -
Jan 1, 2015
app pub date -
Dec 31, 2012
filing date -
Dec 30, 2011
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Abstract
Provided is a gyroscope using a surface acoustic wave (SAW) and an angular velocity measurement method. The gyroscope includes an SAW resonator generating a first SAW, generating Coriolis force using an interaction between a velocity component of the first SAW and applied angular velocity on a metallic dot layer disposed in a certain position, and generating a second SAW using the Coriolis force, an SAW sensing oscillator generating a third SAW and receiving a fourth SAW, which is the third SAW reflected and returning after causing interference due to the second SAW, and a measurement device measuring a level of the applied angular velocity using variations in time of receiving the fourth SAW.
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