Measuring and testing – Vibration – Sensing apparatus
Patent
1997-12-17
2000-10-31
Williams, Hezron
Measuring and testing
Vibration
Sensing apparatus
340429, 340683, G01H 1108, G08B 2100, G08B 2300
Patent
active
061385166
ABSTRACT:
A shock detector provides for ultra low power detection and measurement of damage to an object caused by shock and vibration. The shock detector includes a shock sensor, such as an accelerometer, attached to the object that produces an electrical vibration signal representative of the mechanical vibration of the object. A signal conditioning circuit determines when the magnitude of the electrical vibration signal exceeds a threshold voltage and converts the signal into a digital signal that is in the high voltage state when the magnitude of the electrical vibration signal is above the threshold voltage. Otherwise, the digital signal is in a low voltage state. A data logger records the time spent in the high voltage state. The measured time data and the threshold voltage are then used to estimate the damage applied to the object. Mounting a number of the conditioning circuits in parallel allows for a more accurate estimation.
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Miller Rose M.
Weld Star Technology, Inc.
Williams Hezron
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