Title:
COIN DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/196932
Kind Code:
A1
Abstract:
A coin detection system comprises an excitation coil (3), a radial magnetic gradiometer (5), an axial magnetic gradiometer (6), a signal excitation source (1), a drive circuit (2), an analog front-end circuit (7) and a processor (8). After the excitation coil (3) is excited by the signal excitation source (1) and the drive circuit (2), the excitation coil (3) generates an excitation magnetic field (10) parallel to the axial direction of a coin (4), and under the effect of the excitation magnetic field (10), the coin (4) generates an induced magnetic field (11) through eddies generated in the coin (4); the radial magnetic gradiometer (5) and the axial magnetic gradiometer (6) detect the magnetic field components of the magnetic field (11) in the radial direction and the axial direction of the coin (4), and the detected signal is transmitted to the analog front-end circuit (7) for amplification; the processor (8) processes and then outputs the amplified signal transmitted by the analog front-end circuit (7), and the material, design and color and denomination, etc. of the coin (4) are obtained according to the resonance amplitude, phase and other information of the output signal.
Inventors:
DEAK JAMES GEZA (CN)
GUO HAIPING (CN)
GUO HAIPING (CN)
Application Number:
PCT/CN2015/081290
Publication Date:
December 30, 2015
Filing Date:
June 12, 2015
Export Citation:
Assignee:
MULTIDIMENSION TECHNOLOGY CO LTD (CN)
International Classes:
G07D5/08
Foreign References:
| CN204129826U | 2015-01-28 | |||
| CN104134269A | 2014-11-05 | |||
| CN103617669A | 2014-03-05 | |||
| CN103003711A | 2013-03-27 | |||
| CN1650191A | 2005-08-03 | |||
| US4086527A | 1978-04-25 |
Other References:
See also references of EP 3159854A4
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT & TRADEMARK AGENCY LTD. (CN)
苏州创元专利商标事务所有限公司 (CN)
苏州创元专利商标事务所有限公司 (CN)
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