US 11,054,488 B2
Magnetic detection apparatus, coin recognition unit and magnetic detection method
Masafumi Chikamori, Hyogo (JP); Seiji Morikawa, Hyogo (JP); and Daiki Yokoie, Hyogo (JP)
Assigned to GLORY, LTD., Hyogo (JP)
Appl. No. 16/88,094
Filed by GLORY LTD., Hyogo (JP)
PCT Filed Mar. 23, 2017, PCT No. PCT/JP2017/011884
§ 371(c)(1), (2) Date Sep. 25, 2018,
PCT Pub. No. WO2017/164347, PCT Pub. Date Sep. 28, 2017.
Claims priority of application No. JP2016-062333 (JP), filed on Mar. 25, 2016.
Prior Publication US 2020/0300933 A1, Sep. 24, 2020
Int. Cl. G01R 33/028 (2006.01); G07D 5/08 (2006.01); G01N 27/72 (2006.01)
CPC G01R 33/0283 (2013.01) [G07D 5/08 (2013.01); G01N 27/72 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A magnetic detection apparatus, comprising:
an excitation coil that generates an AC magnetic field in a transport path on which coin is transported in a first direction; and
a plurality of detecting coils disposed side by side at pitches set in advance in a second direction, and outputting detection signals based on an induced voltage by the AC magnetic field,
wherein the plurality of detecting coils respectively output detection signals, based on an inducted voltage induced by the AC magnetic field that is changed by the coin being transported on the transport path, and
the plurality of detecting coils includes a plurality of reflection detecting coils and a plurality of transmission detecting coils.