Sensor fault detection system and method
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United States of America Patent
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Oct 17, 2017
Issued Date -
Aug 15, 2013
app pub date -
Jan 22, 2013
filing date -
Feb 10, 2012
priority date (Note) -
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Abstract
Fault detection techniques for control of sensor systems. A sensor control integrated circuit (“IC”) may include a fault detection system for coupling to the sensor supply lines. The system may detect faults for each of the sensor supply lines. The fault detection system may level shift sensor supply line signals from a first voltage domain to a second voltage domain appropriate for the fault detection system of the controller IC. The fault detection system may level shift source potential voltages from the first voltage domain to the second voltage domain to detect predetermined fault types. The fault detection system may compare the second domain voltages from the sensor supply lines to voltages representing predetermined fault types and may generate fault status indicators based on the comparison.
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