Magnetic transduction sensor device, manufacturing process...

Details Magnetic transduction sensor device, manufacturing process... Magnetic transduction sensor device, manufacturing process...

2004-09-29

2008-11-18

Noori, Max (Department: 2855)

Measuring and testing

Tire, tread or roadway

C073S779000

Reexamination Certificate

active

07451641

ABSTRACT:
A magnetic pressure sensor device comprises at least one magnetic layer able to vary a magnetisation associated thereto in response to a pressure (P) exerted thereon. The device comprises a plurality of layers arranged in a stack, the magnetic layer able to vary a magnetisation associated thereto in response to a pressure (P) comprising a free magnetic layer, able to be associated to a temporary magnetisation (MT), the free magnetic layer belonging to said plurality of layers, which further comprises at least a spacer layer and a permanent magnetic layer associated to a permanent magnetisation (MP). The sensor device further comprises a compressible layer and a layer with high magnetic coercivity associated to the plurality of layers.

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Olson, E.R., et al, “Integrating Giant Magnetoresistive Current and Thermal Sensors in Power Electronic Modules,” IEEE, US, vol. 1, Feb. 9, 2003, pp. 773-777, XP002334290 New York.
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