Device for use in detecting counterfeit or altered bullion, coins or metal
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United States of America Patent
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Mar 20, 2018
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app pub date -
Sep 11, 2014
filing date -
Sep 11, 2013
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Abstract
According to some embodiments of the present invention, a system for detecting counterfeit or altered coins or bullion includes a sensor system, an alternating current (AC) power supply electrically connected to the sensor system, a detection system electrically connected to the sensor system and the AC power supply, and a data processor configured to communicate with the detection system. The sensor system comprises an impedance component and a measurement circuit. The detection system is configured to determine a calibration complex impedance and a sample complex impedance. The data processor is configured to receive the calibration complex impedance and the sample complex impedance from the detection system, and provide information regarding a composition of the sample to distinguish valid coins and bullion from at least one of counterfeit or altered coins and bullion.
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