Apparatus and methods for proximity sensing circuitry

Details Apparatus and methods for proximity sensing circuitry Apparatus and methods for proximity sensing circuitry

2007-11-29

2010-10-05

Patidar, Jay M (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

C324S207160

Reexamination Certificate

active

07808235

ABSTRACT:
An inductive proximity sensor is disclosed. The proximity sensor includes a resonator with a bifurcated inductance coupled to a plurality of transimpedance amplifiers. A portion of the resonator is configured to generate eddy currents in a target containing metal. In various embodiments, the transimpedance amplifiers provide signals associated with eddy currents to a synchronous detector. Apparatus and methods for operating the inductive proximity sensor are disclosed.

REFERENCES:
patent: 5072180 (1991-12-01), Moreau
patent: 6335619 (2002-01-01), Schwab et al.
patent: 2002/0070729 (2002-06-01), Muller
patent: 2009/0021248 (2009-01-01), Bernard et al.

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