Hysteresis assessment for metal immunity
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United States of America Patent
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Jul 5, 2011
Grant Date -
Dec 2, 2004
app pub date -
May 29, 2003
filing date -
May 29, 2003
priority date (Note) -
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Abstract
Assessment apparatus is provided, including a set of one or more radiators, which is adapted to generate an energy field at at least one fundamental frequency. A receiving sensor is adapted to generate a first signal responsive to the energy field when an interfering article is at a first location relative to the receiving sensor, and is adapted to generate a second signal responsive to the energy field when the interfering article is at a second location relative to the receiving sensor. A control unit is adapted to (a) receive and analyze the first and second signals, in order to compute a fingerprint signal characteristic of the interfering article, and (b) store, in a database, data indicative of the fingerprint signal, in association with an identity of the interfering article.
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