CA2153637A1 - Pattern Recognition Using Artificial Neural Network for Coin Validation - Google Patents

Pattern Recognition Using Artificial Neural Network for Coin Validation

Info

Publication number
CA2153637A1
CA2153637A1 CA2153637A CA2153637A CA2153637A1 CA 2153637 A1 CA2153637 A1 CA 2153637A1 CA 2153637 A CA2153637 A CA 2153637A CA 2153637 A CA2153637 A CA 2153637A CA 2153637 A1 CA2153637 A1 CA 2153637A1
Authority
CA
Canada
Prior art keywords
coin
circuit
magnetic sensor
neural network
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2153637A
Other languages
French (fr)
Other versions
CA2153637C (en
Inventor
Chuanming Wang
Mark H. Leibu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coin Acceptors Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2153637A1 publication Critical patent/CA2153637A1/en
Application granted granted Critical
Publication of CA2153637C publication Critical patent/CA2153637C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08—Testing the magnetic or electric properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/02—Testing the dimensions, e.g. thickness, diameter; Testing the deformation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Coins (AREA)

Abstract

A coin validation system for determining if a coin moving along a coin rail (21) is a valid coin, and if so, its denomination the system including a rail (21) along which coins move, at least one optical sensor (40, 42) located along the rail (21) to sense the presence or absence of a coin moving therealong, at least one magneticsensor (40, 42) associated with each optical sensor located in the vicinity of the respective optical sensor (40, 42), each of the magnetic sensors (46, 48) including an inductive element (L1) and a circuit for exciting the magnetic sensor (46, 48) to produce a field that is coupled to the coin moving past so that the coin and theinductive element (L1) have mutual inductance therebetween, the circuit ringing the magnetic sensor (46, 48) a predetermined number of times while the coin is adjacent to the magnetic sensor whereby the magnetic sensor (46, 48) generates a damped wave signal having characteristics representative of the physical and magnetic characteristics of the coin, a signal preprocessor (22) operatively connected to the magnetic sensor (46, 48) for producing output responses representative of distinguishing characteristics of the coin, a feature extraction circuit (24) for extracting from the output responses of the signal preprocessor signal portions representative of predetermined distinguishing characteristics of the coin, a circuit for producing a multi-dimensional representation of the extracted features and for comparing the multi-dimensional representation with the center of an establishedellipsoidal cluster of selected coin denominations to determine the extent of the comparison therebetween and to be used to determine whether the coin is an acceptable coin or not, and an artificial neural network classifier circuit (30) having connections to the preprocessor (22) and to the comparator circuit (32), the neural network classifier circuit (26) having an output which identifies the denomination of coins that are determined by the comparator circuit to be acceptable.
CA002153637A 1994-07-12 1995-07-11 Pattern recognition using artificial neural network for coin validation Expired - Fee Related CA2153637C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/273,931 1994-07-12
US08/273,931 US5485908A (en) 1994-07-12 1994-07-12 Pattern recognition using artificial neural network for coin validation

Publications (2)

Publication Number Publication Date
CA2153637A1 true CA2153637A1 (en) 1996-01-13
CA2153637C CA2153637C (en) 1999-11-30

Family

ID=23046034

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002153637A Expired - Fee Related CA2153637C (en) 1994-07-12 1995-07-11 Pattern recognition using artificial neural network for coin validation

Country Status (6)

Country Link
US (1) US5485908A (en)
EP (1) EP0692773B1 (en)
AU (1) AU696711B2 (en)
CA (1) CA2153637C (en)
DE (1) DE69531883T2 (en)
ES (1) ES2208662T3 (en)

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US5729623A (en) * 1993-10-18 1998-03-17 Glory Kogyo Kabushiki Kaisha Pattern recognition apparatus and method of optimizing mask for pattern recognition according to genetic algorithm
US6014652A (en) * 1994-11-02 2000-01-11 Foster-Miller, Inc. Object classification and identification system
GB2331614A (en) 1997-11-19 1999-05-26 Tetrel Ltd Inductive coin validation system
GB2341263B (en) * 1998-08-14 2002-12-18 Mars Inc Method and apparatus for validating currency
EP1161691A2 (en) * 1998-12-23 2001-12-12 Peter D. Jakab Magnetic resonance scanner with electromagnetic position and orientation tracking device
GB2345372B (en) 1998-12-30 2003-04-16 Mars Inc Method and apparatus for validating coins
JP2000242823A (en) 1999-02-24 2000-09-08 Nippon Conlux Co Ltd Method and device for selecting coin
US6230870B1 (en) 2000-02-10 2001-05-15 Coin Acceptors, Inc. Coin detection device
US7043348B2 (en) * 2003-03-03 2006-05-09 Honeywell International, Inc. Transient fault detection system and method
US20040213448A1 (en) * 2003-04-28 2004-10-28 Asn Technology Corp. Apparatus for recognizing counterfeit currency and method thereof
US7294605B2 (en) 2003-12-18 2007-11-13 Agfa-Healthcare Thermographic recording materials containing a mesionic, 1,2,4-triazolium-3-thiolate compound
US7383238B1 (en) * 2004-02-24 2008-06-03 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Inductive monitoring system constructed from nominal system data and its use in real-time system monitoring
US7233932B2 (en) * 2005-05-31 2007-06-19 Honeywell International, Inc. Fault detection system and method using approximate null space base fault signature classification
US7711582B2 (en) * 2006-04-17 2010-05-04 General Electric Company Remote health application for the optimization of remote site visit frequency
US20090326042A1 (en) * 2006-05-05 2009-12-31 Isis Pharmaceuticals, Inc Compounds and methods for modulating expression of crp
US8695416B2 (en) * 2006-10-20 2014-04-15 Coin Acceptors, Inc. Method of examining a coin for determining its validity and denomination
US10209097B2 (en) 2013-03-19 2019-02-19 Balluff Gmbh Inductive displacement measuring sensor and method for operating the latter
US9336638B2 (en) * 2014-03-25 2016-05-10 Ncr Corporation Media item validation
US20150308920A1 (en) * 2014-04-24 2015-10-29 Honeywell International Inc. Adaptive baseline damage detection system and method
WO2016095882A1 (en) * 2014-12-16 2016-06-23 Balluff Gmbh Contactless position/distance sensor having an artificial neural network and method for operating same
GB201706951D0 (en) * 2017-05-02 2017-06-14 Univ Manchester Method and apparatus for determining conductivity
ES2752214T3 (en) * 2017-07-11 2020-04-03 Azkoyen Sa Coin sensor
US11093599B2 (en) * 2018-06-28 2021-08-17 International Business Machines Corporation Tamper mitigation scheme for locally powered smart devices

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8509609D0 (en) * 1985-04-15 1985-05-22 Coin Controls Discriminating between different metallic articles
US4646904A (en) * 1985-09-05 1987-03-03 Coin Acceptors, Inc. Coin sizing means and method
US4739869A (en) * 1985-09-05 1988-04-26 Coin Acceptors, Inc. Coin detection and validation means and method
US4625852A (en) * 1985-09-05 1986-12-02 Coil Acceptors, Inc. Coin detection and validation means and method
CH676162A5 (en) * 1988-11-07 1990-12-14 Ascom Autelca Ag
US5076414A (en) * 1989-05-24 1991-12-31 Laurel Bank Machines Co., Ltd. Coin discriminating and counting apparatus
US5142665A (en) * 1990-02-20 1992-08-25 International Business Machines Corporation Neural network shell for application programs
JPH04123191A (en) * 1990-09-13 1992-04-23 Nippon Signal Co Ltd:The Coin discriminator
US5167313A (en) * 1990-10-10 1992-12-01 Mars Incorporated Method and apparatus for improved coin, bill and other currency acceptance and slug or counterfeit rejection
DE4100500A1 (en) * 1991-01-10 1992-07-16 Bodenseewerk Geraetetech SIGNAL PROCESSING ARRANGEMENT FOR THE CLASSIFICATION OF OBJECTS BASED ON THE SIGNALS OF SENSORS
JP3332952B2 (en) * 1992-05-20 2002-10-07 グローリー工業株式会社 Coin identification device
ES2104180T3 (en) * 1992-10-14 1997-10-01 Tetrel Ltd COIN VALIDATION DEVICE.
GB2271875A (en) * 1992-10-14 1994-04-27 Tetrel Ltd Coin validator
CH684856A5 (en) * 1992-11-30 1995-01-13 Mars Inc Method for classifying a pattern - in particular a pattern of a bill or a coin - and means for implementing the method.

Also Published As

Publication number Publication date
DE69531883T2 (en) 2004-09-02
EP0692773A3 (en) 1999-06-09
DE69531883D1 (en) 2003-11-13
EP0692773A2 (en) 1996-01-17
US5485908A (en) 1996-01-23
ES2208662T3 (en) 2004-06-16
EP0692773B1 (en) 2003-10-08
CA2153637C (en) 1999-11-30
AU696711B2 (en) 1998-09-17
AU2503395A (en) 1996-01-25

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20090713