North Shore Associates
Thermomagnetic temperature sensing
A thermomagnetic sensor, measurement system and a method of measuring temperature employ a thermomagnetic probe to measure temperature of a device using a thermomagnetic effect. The thermomagnetic sensor includes a plurality of coils configured to provide a mutual inductance measurement between a selected pair of coils of the plurality and the thermomagnetic probe between the selected pair. The thermomagnetic probe includes a ferromagnetic material having a temperature-dependent magnetic permeability determined from the mutual inductance measurement. A predetermined relationship between the temperature-dependent magnetic permeability and temperature in a range between a maximum magnetic permeability value and a Curie temperature provides a measurement of a temperature local to the thermomagnetic probe.
HRL Laboratories, LLC
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G01K G01K
inventional inventional
Geoffrey P Ping Chia-Ming John
McKnight Liu Chang Wang