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Centrifugal unbalance detection system

United States Patent

February 26, 2002
View the Complete Patent at the US Patent & Trademark Office
Savannah River National Laboratory - Visit the Technology Transfer Website
A system consisting of an accelerometer sensor attached to a centrifuge enclosure for sensing vibrations and outputting a signal in the form of a sine wave with an amplitude and frequency that is passed through a pre-amp to convert it to a voltage signal, a low pass filter for removing extraneous noise, an A/D converter and a processor and algorithm for operating on the signal, whereby the algorithm interprets the amplitude and frequency associated with the signal and once an amplitude threshold has been exceeded the algorithm begins to count cycles during a predetermined time period and if a given number of complete cycles exceeds the frequency threshold during the predetermined time period, the system shuts down the centrifuge.
Cordaro; Joseph V. (Martinez, GA), Reeves; George (Graniteville, SC), Mets; Michael (Aiken, SC)
Westinghouse Savannah River Company, LLC (Aiken, SC)
09/ 617,410
July 17, 2000
The U.S. government has rights in this invention pursuant to contract number DE-AC09-96SR18500 between the U.S. Department of Energy and Westinghouse Savannah River Company.