Vibration sensing apparatus
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United States of America Patent
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-
Oct 3, 1989
Grant Date -
N/A
app pub date -
Apr 27, 1988
filing date -
Apr 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sensing device is disclosed which produces a response when the point of impact between an object and a member occurs at a preselected location on the member. When the member vibrates after being impacted by the object, an oscillatory electrical signal is produced by a piezoelectric sensor. Appropriate circuitry is provided for analyzing the oscillatory electrical signal and for producing a response if the object impacted the member at the preselected location. The sensing apparatus is particularly useful in athletics for determining whether a game object contacted the athletic instrument at its 'sweet spot'.
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