Magnetic detection apparatus, coin recognition unit and magnetic detection method
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United States of America Patent
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Jul 6, 2021
Grant Date -
Sep 24, 2020
app pub date -
Mar 23, 2017
filing date -
Mar 25, 2016
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Abstract
Provided is a magnetic detection device (100) having a simple configuration and being capable of stably detecting fine portions of a coin. The magnetic detection device (100) comprises an excitation coil (LX) that generates an alternating magnetic field in a transport path for transporting a coin in a first direction, and a plurality of detection coils (L1, L2) that are arranged at a predetermined pitch in a second direction and that output a detection signal based on an induction voltage caused by the alternating magnetic field. Each of the plurality of detection coils (L1, L2) outputs a detection signal on the basis of the induction voltage induced by the alternating magnetic field, which changes due to the coin being transported along the transportation path.
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