Time-interleaved method for efficient operation of an acoustic w

Details Time-interleaved method for efficient operation of an acoustic w Time-interleaved method for efficient operation of an acoustic w

1994-04-11

1996-02-06

Williams, Hezron E.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73610, 34087013, G01N 2908

Patent

active

054888662

ABSTRACT:
A time-interleaved method for efficient operation of an acoustic wave sensor array couples each sensor repetitively and one at a time via a digitally-addressable analog switch, or multiplexer, to a single oscillator driver to form an oscillation circuit. A frequency of oscillation for each acoustic wave sensor is determined. The frequency for each acoustic wave sensor then is converted into a measurement value for the parameter to which each acoustic wave sensor is sensitive.

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patent: 4312228 (1982-01-01), Wohitjen
patent: 5058080 (1991-10-01), Siems
"Smart Sensor System for Trace Organophosphorus and Organosulfur Vapor Detection Employing a Temperature-Controlled Array of Surface Acoustic Wave Sensors, Automated Sample Preconcentration, and Pattern Recognition" (Anal. Chem. 1993, 65, 1868-1881) Jay W. Grate, Susan L. Rose--Pehrsson, David L. Venezky, Mark Klusty and Hank Wohltjen.
"Multiple-Frequency SAW Devices for Chemical Sensing and Materials Characterization" (Sensors and Actuators B, 10 (1993) 123-131) Antonio J. Ricco and Stephen J. Martin.
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"Multicomponent Analysis Using an Array of Piezoelectric Crystal Sensors" (Anal. Chem. 1987, 59 1529-1534) W. Patrick Carey, Kenneth R. Beebe and Bruce R. Kowalski.

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