Patent ID: 9417292
Filing Date: 2016-08-16
CPC Classification: G01K,G01R,H01M,Y02E

Claim Text:
1. A thermomagnetic sensor comprising: a thermomagnetic probe comprising a ferromagnetic material having a temperature-dependent magnetic permeability characterized by a maximum magnetic permeability value at a temperature below a Curie temperature of the ferromagnetic material, the temperature-dependent magnetic permeability monotonically decreasing as a function of temperature between the maximum magnetic permeability value and the Curie temperature; an alternating magnetic field source to produce an alternating magnetic field in a vicinity of the thermomagnetic probe to facilitate a measurement of the temperature-dependent magnetic permeability as a function of temperature, the alternating magnetic field having a frequency between about 10 hertz and about 10 kilohertz; and a sensing coil spaced apart from and operably connected to the thermomagnetic probe, wherein a predetermined relationship between the temperature-dependent magnetic permeability and temperature in a range between the maximum magnetic permeability value and the Curie temperature provides a measurement of a temperature local to the thermomagnetic probe.