Patents by Inventor Joseph E. Pegg

Joseph E. Pegg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Transducer in-situ testing apparatus and method
    Patent number: 6698269
    Abstract: The present invention provides an apparatus and method for in-situ testing of transducers, and more particularly to the testing of piezoelectric transducers including piezoelectric accelerometers. Circuits, measurement techniques, and interpretative algorithms to enable in-situ testing of piezoelectric accelerometers are described. Accelerometers that employ a piezoelectric material to convert mechanical strains into electronic signals are reciprocal electromechanical transducers. In such transducers the electrical output impedance of the sensor is dependent upon the electrical and mechanical parameters of the sensor. The procedure described in this disclosure includes methods of measuring the transducer electrical output impedance as a function of frequency and the extraction of the electrical and mechanical transducer parameters from the measured data. The measured values of the transducer parameters may be interpreted to provide an indication of the operational status of the transducer.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: March 2, 2004
    Assignee: Oceana Sensor Technologies, Inc.
    Inventors: Isaak Baber, Mark F. Bocko, Joseph E. Pegg, William Simmons
  • Transducer in-situ testing apparatus and method
    Publication number: 20030024298
    Abstract: The present invention provides an apparatus and method for in-situ testing of transducers, and more particularly to the testing of piezoelectric transducers including piezoelectric accelerometers. Circuits, measurement techniques, and interpretative algorithms to enable in-situ testing of piezoelectric accelerometers are described. Accelerometers that employ a piezoelectric material to convert mechanical strains into electronic signals are reciprocal electromechanical transducers. In such transducers the electrical output impedance of the sensor is dependent upon the electrical and mechanical parameters of the sensor. The procedure described in this disclosure includes methods of measuring the transducer electrical output impedance as a function of frequency and the extraction of the electrical and mechanical transducer parameters from the measured data. The measured values of the transducer parameters may be interpreted to provide an indication of the operational status of the transducer.
    Type: Application
    Filed: April 24, 2002
    Publication date: February 6, 2003
    Applicant: Oceana Sensor Technologies, Inc.
    Inventors: Isaak Baber, Mark F. Bocko, William Simmons, Joseph E. Pegg