Proximity sensor detecting metallic and non-metallic objects

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United States of America Patent

PATENT NO 9274075
APP PUB NO 20150212033A1
SERIAL NO

14168506

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Abstract

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A method determines a type of an object in a proximity to a resonant structure having a resonant frequency as a metallic object if the object changes a phase of a power signal reflected by the resonant structure at frequencies below and above the resonant frequency. Otherwise, the method determines the type of the object as a non-metallic object.

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Patent Owner(s)

  • MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Long, Jiang La Jolla, US 73 728
Teo, Koon Hoo Lexington, US 131 3527
Wang, Bingnan Belmont, US 60 750

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