Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Reexamination Certificate
2007-06-11
2009-06-30
Allen, Andre J (Department: 2855)
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
C250S338300, C374S052000
Reexamination Certificate
active
07553077
ABSTRACT:
Systems and methods for determining a temperature of a ferroelectric sensor are provided. The ferroelectric sensor has operational characteristics defined by a polarization versus voltage hysteresis loop. In one exemplary embodiment, the method includes applying a symmetrical periodic voltage waveform to the ferroelectric sensor so as to induce the ferroelectric sensor to traverse the polarization versus voltage hysteresis loop. The method further includes monitoring voltages across the ferroelectric sensor and polarization states of the ferroelectric sensor over a first time interval to determine a first zero field polarization state and a first coercive field voltage. The method further includes determining a first temperature value indicative of the temperature of the ferroelectric sensor based on the first coercive field voltage.
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Mantese Joseph V.
Micheli Adolph L.
Putty Michael W.
Schubring Norman W.
Allen Andre J
Delphi Technologies Inc.
Marshall Paul L.
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