Systems and methods for determining a temperature of a ferroelectric sensor

A system for determining a temperature of a ferroelectric sensor, the ferroelectric sensor having operational characteristics defined by a polarization versus voltage hysteresis loop, the system comprising:

• a voltage source configured to apply a symmetrical periodic voltage waveform to the ferroelectric sensor so as to induce the ferroelectric sensor to traverse toe polarization versus voltage hysteresis loop;
• a controller configured to monitor 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;
• and
• the controller further configured to determine a first temperature value indicative of the temperature of the ferroelectric sensor based on the first coercive field voltage.

A method for determining a temperature of a ferroelectric sensor, the ferroelectric sensor having operational characteristics defined by first and second polarization versus voltage hysteresis loops, the method comprising:

• applying a symmetrical periodic voltage waveform to the first and second ferroelectric sensor so as to induce the ferroelectric sensor to traverse the polarization versus voltage hysteresis loops;
• monitoring voltages across the ferroelectric sensor and polarization states of the ferroelectric sensor during a traversal of the first polarization versus voltage hysteresis loop;
• determining a first area of the first polarization versus voltage hysteresis loop based on the monitored voltages and polarization states during the traversal of the first polarization versus voltage hysteresis loop;
• and
• determining a first temperature value indicative of the temperature of the ferroelectric sensor based on the first area of the first polarization versus voltage hysteresis loop.

A system for determining a temperature of a ferroelectric sensor, the ferroelectric sensor having operational characteristics defined by first and second polarization versus voltage hysteresis loops, the system comprising:

• a voltage source configured to apply a symmetrical periodic voltage waveform to the ferroelectric sensor so as to induce the ferroelectric sensor to traverse the first and second polarization versus voltage hysteresis loops;
• a controller configured to monitor voltages across the ferroelectric sensor and polarization states of the ferroelectric sensor during a traversal of the first polarization versus voltage hysteresis loop;
• the controller further configured to determine a first area of the first polarization versus voltage hysteresis loop based on the monitored voltages and polarization states during the traversal of the first polarization versus voltage hysteresis loop;
• and
• the controller further configured to determine a first temperature value indicative of the temperature of the ferroelectric sensor based on the first area of the first polarization versus voltage hysteresis loop.