Freescale Semiconductor,inc.

Marco Fuhrman

Liviu Chiaburu

Thomas D Ohe

A sensor system () includes transducers () each yielding an analog signal () representing a parameter independently sensed by each of the transducers (). The signals () are summed and the resulting transducer signal () is converted to a digital transducer signal () by a high resolution analog-to-digital converter (ADC) (). Concurrently, one of the signals () is subtracted from the other. The resulting difference signal () is converted to a digital difference signal () by a low resolution ADC (). When the digital difference signal () is within a threshold window (), a fault signal () indicates a normal condition () of the transducers (). When the signal () falls outside of the threshold window (), a fault signal () indicates a fault condition () of the transducers. The transducer and fault signals () are concurrently output from the sensor system ().

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Mesa, AZ, United States of America

Marco Fuhrman