Systems and methods for identifying a failure in an analog to digital converter
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United States of America Patent
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Apr 3, 2018
Grant Date -
Jan 19, 2017
app pub date -
Jul 17, 2015
filing date -
Jul 17, 2015
priority date (Note) -
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Abstract
The present disclosure provides systems and methods for identifying failures in an analog to digital (A/D) converter. An intelligent electronic device (IED) may monitor a digital output of one or more A/D converters. The IED may determine a slope value limit associated with the A/D converter. The IED may determine an output slope value of the digital output based on a difference of a converter output value measured at a first time and a converter output value measured at a later time. If the determined output slope value exceeds the slope value limit, the IED may identify a failure of the A/D converter. An IED may determine that concurrent failures in multiple, parallel A/D converters are indicative of a problem upstream from the A/D converters.
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