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WO1993002431A1 - Procede et dispositif de controle et de tri eventuel de pieces de monnaie - Google Patents

Procede et dispositif de controle et de tri eventuel de pieces de monnaie Download PDF

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Publication number
WO1993002431A1
WO1993002431A1 PCT/DK1991/000209 DK9100209W WO9302431A1 WO 1993002431 A1 WO1993002431 A1 WO 1993002431A1 DK 9100209 W DK9100209 W DK 9100209W WO 9302431 A1 WO9302431 A1 WO 9302431A1
Authority
WO
WIPO (PCT)
Prior art keywords
coin
coins
coil
khz
signals
Prior art date
Application number
PCT/DK1991/000209
Other languages
English (en)
Inventor
Peter HANGÅRD
Bjarne Danø SØRENSEN
Original Assignee
C.T. Coin A/S
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 C.T. Coin A/S filed Critical C.T. Coin A/S
Priority to PCT/DK1991/000209 priority Critical patent/WO1993002431A1/fr
Publication of WO1993002431A1 publication Critical patent/WO1993002431A1/fr

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

Definitions

  • the present invention relates to a method of detecting the kind or type of coins in a coin receiving apparatus in order to detect the coin values or to obtain a rejection of unacceptable coins or coin blanks.
  • a detection is actual both in coin operated vending machines and in coin counting apparatuses, and there has been developed, long ago, mechanical sensing devices for testing the coin dimensions to thereby distinguish between current and unacceptable coins with a certain degree of accuracy. All according to the result of the detection the coins may then be accepted according to their denomination or be rejected as non-current.
  • the test can be expanded to more than the size of the coins, viz. also to the coin metal alloy, it being relatively easy to test whether the alloy is 'correct*', because coins of different alloys will have different shading effects towards induction signals sent across the coins between a transmitter and a receiver coil, e.g. with a frequency of 10-20 kHz.
  • a rejection of e.g. foreign coins which, irrespective of their size, have a non-current alloy composition.
  • the diameter detection can be effected reasonably accurately by means of light sensors mounted in such a height over an inclined conveyor rail for the rolling coins that it is possible to distinguish between coins of respective correct sizes and over- or , whereby there is provided a basis for an accept or a rejection of the passing coins.
  • a detector system in which the coins are caused to roll or fall through three intercoupled coils forming a differential transformer that is fed, in an alternating manner, by a 'low' frequency, viz. 200 kHz, and a 'high' frequency, viz. 1 MHz, whereby it is possible, based on the differential signal from the two consecutive, secondary windings, to process the measured maxima and thereby ind different characteristic signal combinations for different types of coins.
  • a system is usable for selective detection of mutually very different types of coins, but it is in no way sensitive enough for a detection or rejection of coin types only slightly deviating from acceptable types.
  • the measuring results for more different frequencies will then be at disposal concurrently for the data processing, and with a suitable choice of frequencies it can be rapidly and accurately determined whether the coin is current and what its nominal value is.
  • the different coins will reveal themselves by quite specific combinations of the measuring results of the different frequencies, and already by the concurrent use of three different frequencies in the sole coil set a rapid and reasonably accurate selection will be made possible.
  • the invention preferably calls for frequencies that are substantially deviating from the above mentioned frequencies in the described known system, as for the diameter detection it has been found sufficient to operate at some 500 kHz, while for the detection of the alloy and the thickness it has been found suitable to apply frequencies as low as 10 and 30 kHz. It has been found that in particular the intermediate frequency of approximately 30 kHz is highly significant for a very accurate detection of the coin.
  • this fact or result may be used to provide to the coin conveying means a signal for immediate rejection of the coin to a collector tray for non-current coins once the coin has left the field sensing station, while current coins are allowed to be conveyed further to a more or less conventional sorter station.
  • the sorting out may be effected conventionally by purely mechanical diverter means for coins of different characteristic diameters, but an associated summing up of the coin values man be effected in or by the said detector unit, in which the current coins are fully identified.
  • selective control signals may be applied to diverter means located along a downwardly inclined rolling path of the coins in such a manner that the coins, without any further diameter detection, are thrown off from the rolling path at the relevant places thereof for collection in respective containers or trays.
  • Fig. 1 is a perspective view of a detector and sorter unit according to the invention.
  • Fig. 2 is a lateral view thereof.
  • Fig. 3 is a perspective view of a modified embodiment of the invention.
  • Fig. 4 is an end view thereof.
  • the structure shown in the drawing is based on the use of a downwardly inclined roller rail 2, to the upper end of which there is successively supplied coins from a non-illustrated, but well known coin supply unit.
  • the coins roll down along the rail 2 in a suitably side supported manner, and they will hereby pass through a sensor station comprising a U-shaped carrier member 4 for a transmitter coil 6 at one side of the rolling path and a receiver coil 8 at the opposite side of this path. Both of these coils are marked high and narrow, such that they will be slightly higher than the largest current coin and well narrower than the smallest current coin.
  • the transmitter coil 6 is supplied with three different frequency signals, viz. of 10, 30 and 500 kHz, respectively, and by the running-through of the coins through the unit 4 the induction signal received by the receiver coil 8 will be subjected to a certain attenuation, which can be detected by an associated, non-illustrated receiver and detector unit 9, in which each one of the three signals are detected.
  • the attenuation of the frequencies 10 and 30 kHz will depend mainly of the alloy of which the passing coin consists, while the attenuation of the frequency 500 kHz will mainly depend of the coin area that acts shadowing between the two opposed coils. During the rolling-through of the single coins this area will increase to and decrease from a maximum corresponding to the coin diameter, and in the receiver unit it will be easy to detect the maximum attenuation, which will thus be indicative of the diameter of the coin.
  • a rejector unit 10 which, by means of a piston 12, is operable to push out any passing coin to a collector tray for non-current coins, viz. in response to a non-current coin having been detected by its passage through the unit 4.
  • the current coins are allowed to continue their rolling down along the rail, whereby they can be diverted, conventionally, to different collector trays all according to their diameters, this being arrangeable in a purely mechanical manner as already known.
  • the smudge present on the coins may, over the time, be deposited on the inner sides of the unit 4, whereby an unintended, general attenuation of the induction signals between the coils 6 and 8 may occur and give rise to detection errors.
  • This calamity may be counteracted in a simple manner by way of the associated electronic control and detector unit being made self-calibrating when no actual throughrunning of coins take place, this condition being detectable by this unit itself.
  • the received signal on the coin 8 is stable through a certain period of time there will be no coin on its way through the unit, and the unit may then be selfadjusting such that the received signal for each of the three frequencies gives rise to a preset "zero result", which will ensure a correct calibration of the equipment.
  • the calibration will not have to be made consequently between all coin passages, but e.g. only at larger time intervals, as a noticeable smudging of the unit 4 will seldom occur all by a sudden.
  • the embodiment shown in Figs. 3 and 4 is characteristic by having at its top an additional coil 14, the coil axis of which extends down along the planes of the coils 6 and 8. According to Fig. 4 this additional coil is connected in series with the receiver coil 8, which is here made with a hight somewhat smaller than the height of the transmitter coil 6; if these two coils are of equal height the effect on the coil 14 will be insufficient. As mentioned, it has been found that the addition of the coil 14 results in a highly increased sensibility.
  • the coils 6 and 8 may have 160 windings with 0,25 mm coppar wire, while the coil 14 may have 120 windings with 0,10 mm coppar wire.
  • a shunt resistance R of e.g. 100 Ohms is mounted across the coil 14.
  • the system is designed such that it can be switched into a self calibration mode, in which it will detect the measuring values for known coins, whereafter, with the use of suitable adjustment means, the system can be adjusted to such deviations, which will be acceptable in practice. Otherwise the adjustment may be so fine that it will be possible to distinguish between new and only slightly worn coins.
  • the system by itself, may registrate the relevant area of variation for the single coin types, if the calibration is effected based on a larger number of both new and used coins.
  • the frequencies are not particularly critical, but preferably the two low frequent signals should be below 100 kHz and be separated by at least 10 kHz, while the high frequent signal should be well above 100 kHz. However, no special effect is obtained by raising this frequency to more than 500 kHz.

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

Abstract

Dans un dispositif de contrôle de pièces de monnaie dans lequel les pièces circulent par un champ de détection électromagnétique, ce champ est produit par une bobine unique (6), alimentée simultanément par un signal haute-fréquence (500 kHz), ainsi que par deux signaux basse fréquence réciproquement différents (10 et 30 kHz), ce qui permet d'atteindre une sélectivité élevée de façon simple. On augmente encore ladite sélectivité en ajoutant à la bobine réceptrice (8) une bobine auxiliaire branchée en série (14) montée à proximité de l'espace situé entre les deux bobines principales (6, 8) et dont l'axe électromagnétique s'étend à l'intérieur dudit espace, ce qui augmente considérablement la sensibilité, en particulier, de l'un des signaux basse fréquence (30 kHz).
PCT/DK1991/000209 1991-07-16 1991-07-16 Procede et dispositif de controle et de tri eventuel de pieces de monnaie WO1993002431A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DK1991/000209 WO1993002431A1 (fr) 1991-07-16 1991-07-16 Procede et dispositif de controle et de tri eventuel de pieces de monnaie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK1991/000209 WO1993002431A1 (fr) 1991-07-16 1991-07-16 Procede et dispositif de controle et de tri eventuel de pieces de monnaie

Publications (1)

Publication Number Publication Date
WO1993002431A1 true WO1993002431A1 (fr) 1993-02-04

Family

ID=8153687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1991/000209 WO1993002431A1 (fr) 1991-07-16 1991-07-16 Procede et dispositif de controle et de tri eventuel de pieces de monnaie

Country Status (1)

Country Link
WO (1) WO1993002431A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6065582A (en) * 1996-03-19 2000-05-23 Electrowatt Technology Innovation Ag Coin-checking arrangement
US6196371B1 (en) * 1996-06-28 2001-03-06 Coinstar, Inc. Coin discrimination apparatus and method
US6264545B1 (en) 2000-02-26 2001-07-24 The Magee Company Method and apparatus for coin processing
EP1172772A2 (fr) 2000-06-30 2002-01-16 Azkoyen Medios de Pago, S.A. Procédé et dispositif pour obtenir des caractéristiques physiques de pièces de monnaie pour leur identification
US6520308B1 (en) * 1996-06-28 2003-02-18 Coinstar, Inc. Coin discrimination apparatus and method
EP1241636A3 (fr) * 2001-03-15 2004-06-30 Glory Ltd. Sélecteur de pièces de monnaie pour des pièces constituées de plusieurs matériaux
US7152727B2 (en) 2001-09-21 2006-12-26 Coinstar, Inc. Method and apparatus for coin or object sensing using adaptive operating point control
US7552810B2 (en) 2002-03-11 2009-06-30 Cummins-Allison Corp. Sensor and method for discriminating coins using fast fourier transform
US8967361B2 (en) 2013-02-27 2015-03-03 Outerwall Inc. Coin counting and sorting machines
US9022841B2 (en) 2013-05-08 2015-05-05 Outerwall Inc. Coin counting and/or sorting machines and associated systems and methods
US9036890B2 (en) 2012-06-05 2015-05-19 Outerwall Inc. Optical coin discrimination systems and methods for use with consumer-operated kiosks and the like
US9443367B2 (en) 2014-01-17 2016-09-13 Outerwall Inc. Digital image coin discrimination for use with consumer-operated kiosks and the like

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1362628A (en) * 1971-09-15 1974-08-07 Int Standard Electric Corp Coin-testing device
US3918563A (en) * 1973-11-22 1975-11-11 Mars Inc Coin arrival sensor
SE393475B (sv) * 1971-05-24 1977-05-09 Mars Inc Sett att granska ett mynt for bestemning av huruvida det er autentiskt samt apparat for granskning enligt settet
US4108296A (en) * 1976-04-08 1978-08-22 Nippon Coinco Co., Ltd. Coin receiving apparatus for a vending machine
US4124111A (en) * 1975-12-02 1978-11-07 Nippon Coinco Co. Ltd. Coin inspecting apparatus
WO1981002354A1 (fr) * 1980-02-06 1981-08-20 Mars Inc Ameliorations se rapportant a la verification des pieces de monnaie
GB2093620A (en) * 1981-02-11 1982-09-02 Mars Inc Checking coins
GB2096812A (en) * 1981-02-18 1982-10-20 Appliance Components Ltd Validation of coins and tokens
GB2164188A (en) * 1984-01-20 1986-03-12 Sodeco Compteurs De Geneve Apparatus for testing coins of various values
EP0227453A2 (fr) * 1985-12-19 1987-07-01 Bonelco Industries, Limited Détection et reconnaissance d'objets

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE393475B (sv) * 1971-05-24 1977-05-09 Mars Inc Sett att granska ett mynt for bestemning av huruvida det er autentiskt samt apparat for granskning enligt settet
DE2225228C2 (fr) * 1971-05-24 1987-07-23 Mars Inc., Mclean, Va., Us
GB1362628A (en) * 1971-09-15 1974-08-07 Int Standard Electric Corp Coin-testing device
US3918563A (en) * 1973-11-22 1975-11-11 Mars Inc Coin arrival sensor
US4124111A (en) * 1975-12-02 1978-11-07 Nippon Coinco Co. Ltd. Coin inspecting apparatus
US4108296A (en) * 1976-04-08 1978-08-22 Nippon Coinco Co., Ltd. Coin receiving apparatus for a vending machine
WO1981002354A1 (fr) * 1980-02-06 1981-08-20 Mars Inc Ameliorations se rapportant a la verification des pieces de monnaie
GB2093620A (en) * 1981-02-11 1982-09-02 Mars Inc Checking coins
GB2096812A (en) * 1981-02-18 1982-10-20 Appliance Components Ltd Validation of coins and tokens
GB2164188A (en) * 1984-01-20 1986-03-12 Sodeco Compteurs De Geneve Apparatus for testing coins of various values
EP0227453A2 (fr) * 1985-12-19 1987-07-01 Bonelco Industries, Limited Détection et reconnaissance d'objets

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6065582A (en) * 1996-03-19 2000-05-23 Electrowatt Technology Innovation Ag Coin-checking arrangement
US7213697B2 (en) 1996-06-28 2007-05-08 Coinstar, Inc. Coin discrimination apparatus and method
US6196371B1 (en) * 1996-06-28 2001-03-06 Coinstar, Inc. Coin discrimination apparatus and method
US6520308B1 (en) * 1996-06-28 2003-02-18 Coinstar, Inc. Coin discrimination apparatus and method
US7520374B2 (en) 1996-06-28 2009-04-21 Coinstar, Inc. Coin discrimination apparatus and method
US6766892B2 (en) 1996-06-28 2004-07-27 Coinstar, Inc. Coin discrimination apparatus and method
US6264545B1 (en) 2000-02-26 2001-07-24 The Magee Company Method and apparatus for coin processing
EP1172772A2 (fr) 2000-06-30 2002-01-16 Azkoyen Medios de Pago, S.A. Procédé et dispositif pour obtenir des caractéristiques physiques de pièces de monnaie pour leur identification
EP1241636A3 (fr) * 2001-03-15 2004-06-30 Glory Ltd. Sélecteur de pièces de monnaie pour des pièces constituées de plusieurs matériaux
US7152727B2 (en) 2001-09-21 2006-12-26 Coinstar, Inc. Method and apparatus for coin or object sensing using adaptive operating point control
US7552810B2 (en) 2002-03-11 2009-06-30 Cummins-Allison Corp. Sensor and method for discriminating coins using fast fourier transform
US9036890B2 (en) 2012-06-05 2015-05-19 Outerwall Inc. Optical coin discrimination systems and methods for use with consumer-operated kiosks and the like
US9594982B2 (en) 2012-06-05 2017-03-14 Coinstar, Llc Optical coin discrimination systems and methods for use with consumer-operated kiosks and the like
US8967361B2 (en) 2013-02-27 2015-03-03 Outerwall Inc. Coin counting and sorting machines
US9022841B2 (en) 2013-05-08 2015-05-05 Outerwall Inc. Coin counting and/or sorting machines and associated systems and methods
US9443367B2 (en) 2014-01-17 2016-09-13 Outerwall Inc. Digital image coin discrimination for use with consumer-operated kiosks and the like

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