Method and apparatus for calibration of sensor signals
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United States of America Patent
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Aug 4, 2009
Grant Date -
Dec 4, 2008
app pub date -
May 29, 2007
filing date -
May 29, 2007
priority date (Note) -
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Abstract
A method is disclosed for providing calibration of sensor signals in a sensor having a measuring sensor and a reference sensor. The method includes receiving a sensor signal and a reference signal from the measuring sensor and the reference sensor, respectively. The method further includes providing a first compensation signal to the sensor signal based on a gain characteristic and providing a second compensation signal to the reference signal based on the gain characteristic and an offset characteristic; combining the first compensation signal and the sensor signal, and the second compensation signal and the reference signal to create a compensated sensor signal; and, adjusting the compensated signal for temperature effects by coupling a component having a high thermal coefficient to the sensor. An apparatus is also described herein.
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