EP1577844A2 - Device for testing coins - Google Patents

Device for testing coins Download PDF

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Publication number
EP1577844A2
EP1577844A2 EP05005082A EP05005082A EP1577844A2 EP 1577844 A2 EP1577844 A2 EP 1577844A2 EP 05005082 A EP05005082 A EP 05005082A EP 05005082 A EP05005082 A EP 05005082A EP 1577844 A2 EP1577844 A2 EP 1577844A2
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EP
European Patent Office
Prior art keywords
coil
receiving coil
coin
transmitting
coins
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
EP05005082A
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German (de)
French (fr)
Other versions
EP1577844B1 (en
EP1577844A3 (en
Inventor
Ulrich Dipl.-Ing. Cohrs
Wilfried Dipl.-Ing. Meyer
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.)
Crane Payment Innovations GmbH
Original Assignee
National Rejectors Inc GmbH
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Filing date
Publication date
Application filed by National Rejectors Inc GmbH filed Critical National Rejectors Inc GmbH
Publication of EP1577844A2 publication Critical patent/EP1577844A2/en
Publication of EP1577844A3 publication Critical patent/EP1577844A3/en
Application granted granted Critical
Publication of EP1577844B1 publication Critical patent/EP1577844B1/en
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Anticipated expiration legal-status Critical

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    • 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 invention relates to a device for testing coins with a inductively operating sensor arrangement according to claim 1.
  • Inductive measuring arrangements for coin validators usually use one Transmitter coil and on the opposite side of the coin track a receiver coil. As the coin passes through the magnetic field, it becomes the receiving coil damped. Since the magnetic field must penetrate the entire coin, it is not possible to detect inhomogeneities in the material depth of the coin. So can For example, if the magnetic moment is determined for a particular coin, not, however, whether the magnetic layer is on the surface or in the middle located in the coin. A similar problem arises with plated coins. Because only A total attenuation is measured, it can not be determined if it is homogeneous material or plated coins.
  • the invention is based on the object, a device for checking coins with a sufficiently high resolution measurement over the thickness of the Coin is allowed away without leaving any gap fluctuations of the coin particularly disadvantageous.
  • the invention sees the arrangement of the receiver coil on the same side as the Transmitting coil before, wherein the cross section of the preferably smaller receiving coil of a homogeneous magnetic field portion of the transmitting coil traversed by the coin is flooded.
  • receive and Transmitting coil arranged on the same side.
  • a relatively good insensitivity against uneven running of the coins is achieved in that the receiving coil in is essentially flooded by a homogeneous field of the transmitting coil. It is Consequently, to choose a coil arrangement, with which this requirement is met. at In this coil arrangement, the magnetic field in the center of the coil occurs approximately vertically to the core off and on and the magnetic field lines curl only in relatively large Distance from the surface of the core.
  • An arrangement according to the invention for testing coins sees the arrangement a transmitting coil on a ferrite core whose length is greater than the length of the Kitchen sink.
  • the receiver coil has a smaller diameter and is on one side of the ferrite core arranged coaxially so as to be separated from a homogeneous field Flood coil is flooded.
  • the receiving coil is located in an end-side Ring recess of the core, in particular the ferrite core.
  • a further receiving coil on the opposite Side of Münzlaufbahn arranged, which of the magnetic field of the transmitting coil, which penetrates the coin, is flooded.
  • FIG. 1 three examples of the cross section of coins are indicated. Under 1. is a plated or galvanized coin shown d. H. on both sides with one Layer is provided. In the middle example, a homogeneous coin is indicated, the z. B. brass, iron or a Kupfernickellegtechnik. In the example below is a so-called layer coin represented with a nickel core and outer Layers of copper / nickel alloy. With the help of the invention such Coins are discriminated against.
  • FIG. 2 shows a ferrite core 10 in section, on the outside of a transmitting coil 12th is applied.
  • the length of the ferrite core 10 is significantly larger than that of the transmitting coil 12, d. H. is nearly four times the coil length.
  • the transmitting coil 12 is in Distance from the ends of the ferrite core 10 is arranged.
  • a receiving coil 16 is arranged in an annular recess 14 at one end of the ferrite core 10. It is coaxial to the transmitting coil 12, but has a much smaller inner and outer diameter as the transmitting coil 12.
  • With 18 a plane is indicated, in which usually one Coin moves in a coin validator along. The annular recess is thus the plane 18 turned.
  • the running direction of the coins is approximately in the direction of arrow 20.
  • the magnetic field lines generated by the transmitting coil 12 are shown in dashed lines. In the region of the receiving coil 16, the magnetic field is largely homogeneous. So it is the receiving coil 16 flowing through and the coin in the measurement plane 18 acting Magnetic field largely homogeneous. A divergence of the magnetic lines, as indicated at 22, takes place at a greater distance from the coil assembly.
  • the method for testing coins with the coil arrangement according to FIG. 2 is intended not described. It can proceed, for example, according to methods, as in DE 197 26 449 described.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Coins (AREA)
  • Noodles (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

The device has transmitting and receiving coils (12, 16) that are arranged on a ferrite core (10) on one side of a coin track (18). Another receiving coil is arranged on opposite side of the coin track. The diameter of the transmitting coil is large so that center field of the transmitting coil has homogeneous characteristics and the receiving coil is arranged in a homogeneous region of the transmitting coil.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Prüfen von Münzen mit einer induktiv arbeitenden Sensoranordnung nach dem Patentanspruch 1.The invention relates to a device for testing coins with a inductively operating sensor arrangement according to claim 1.

Induktiv arbeitende Meßanordnungen für Münzprüfer nutzen üblicherweise eine Sendespule und auf der gegenüberliegenden Seite der Münzlaufbahn eine Empfängerspule. Beim Durchlauf der Münze durch das Magnetfeld wird die Empfangsspule bedämpft. Da das Magnetfeld die gesamte Münze durchdringen muß, ist es nicht möglich, Inhomogenitäten in der Materialtiefe der Münze festzustellen. So kann beispielsweise bei einer bestimmten Münze das magnetische Moment bestimmt werden, nicht jedoch, ob sich die magnetische Schicht an der Oberfläche oder in der Mitte in der Münze befindet. Ein gleiches Problem ergibt sich bei plattierten Münzen. Da nur eine Gesamtdämpfung gemessen wird, kann nicht festgestellt werden, ob es sich um homogenes Material oder um plattierte Münzen handelt.Inductive measuring arrangements for coin validators usually use one Transmitter coil and on the opposite side of the coin track a receiver coil. As the coin passes through the magnetic field, it becomes the receiving coil damped. Since the magnetic field must penetrate the entire coin, it is not possible to detect inhomogeneities in the material depth of the coin. So can For example, if the magnetic moment is determined for a particular coin, not, however, whether the magnetic layer is on the surface or in the middle located in the coin. A similar problem arises with plated coins. Because only A total attenuation is measured, it can not be determined if it is homogeneous material or plated coins.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Prüfen von Münzen anzugeben, mit dem bei ausreichend hoher Auflösung eine Messung über die Dicke der Münze hinweg ermöglicht wird, ohne daß sich Abstandsschwankungen der Münze besonders nachteilig auswirken.The invention is based on the object, a device for checking coins with a sufficiently high resolution measurement over the thickness of the Coin is allowed away without leaving any gap fluctuations of the coin particularly disadvantageous.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.

Die Erfindung sieht die Anordnung der Empfängerspule auf der gleichen Seite wie die Sendespule vor, wobei der Querschnitt der vorzugsweise kleineren Empfangsspule von einem homogenen von der Münze durchquerten Magnetfeldanteil der Sendespule durchflutet wird. Bei dem erfindungsgemäßen Verfahren werden daher Empfangs- und Sendespule auf der gleichen Seite angeordnet. Eine relativ gute Unempfindlichkeit gegen Laufunruhe der Münzen wird dadurch erreicht, daß die Empfangsspule im wesentlichen von einem homogenen Feld der Sendespule durchflutet wird. Es ist mithin eine Spulenanordnung zu wählen, mit der diese Forderung erfüllt wird. Bei dieser Spulenanordnung tritt das Magnetfeld in der Spulenmitte annähernd senkrecht zum Kern aus bzw. ein und die Magnetfeldlinien krümmen sich erst in relativ großer Entfernung von der Oberfläche des Kerns. Für den homogenen Teil des Magnetfelds ist es daher nicht so entscheidend, in welcher Entfernung sich die Meßebene von der Spulenanordnung befindet. Da beide Pole der Empfängerspule von dem gleichen Sendefeld durchflutet werden, ist die Kopplung zwischen Sende- und Empfangsspule relativ schwach, wodurch der Einfluß der Münze auf das Meßsignal vergrößert wird. Das Ausgangssignal der Empfangsspule ist proportional zu den Feldstärkeunterschieden zwischen Außen- und Innenpol der Empfangsspule. Diese Unterschiede sind ihrerseits proportional zur Gesamtfeldstärke und erhalten somit die erforderlichen Feldinformationen. Die hierbei erzielte Unempfindlichkeit gegenüber Laufunruhe der Münzen (Abstandsschwankungen der Münze) entspricht etwa der einer großen Meßsonde. Bei kleinem Durchmesser der Spule wird eine hohe Ortsauflösung wegen des kleinen Durchmessers der Empfangsspule erhalten. Dieser kann deutlich kleiner als der der zu prüfenden Münzen sein. Dies z.B. wichtig bei der Prüfung sog. Bicolor-Münzen. Bei größerem Durchmesser läßt sich auch eine Durchmesserprüfung der Münzen ermöglichen.The invention sees the arrangement of the receiver coil on the same side as the Transmitting coil before, wherein the cross section of the preferably smaller receiving coil of a homogeneous magnetic field portion of the transmitting coil traversed by the coin is flooded. In the method according to the invention therefore receive and Transmitting coil arranged on the same side. A relatively good insensitivity against uneven running of the coins is achieved in that the receiving coil in is essentially flooded by a homogeneous field of the transmitting coil. It is Consequently, to choose a coil arrangement, with which this requirement is met. at In this coil arrangement, the magnetic field in the center of the coil occurs approximately vertically to the core off and on and the magnetic field lines curl only in relatively large Distance from the surface of the core. For the homogeneous part of the magnetic field is It is therefore not so crucial at which distance the measuring plane of the Coil arrangement is located. Since both poles of the receiver coil of the same Flooded field, is the coupling between transmitting and receiving coil relatively weak, whereby the influence of the coin is increased to the measurement signal. The output signal of the receiver coil is proportional to the field strength differences between the outer and inner pole of the receiver coil. These differences are in turn proportional to the total field strength and thus receive the required Field information. The case achieved insensitivity to rough running of the Coins (distance fluctuations of the coin) corresponds approximately to that of a large measuring probe. With a small diameter of the coil, a high spatial resolution due to the received small diameter of the receiving coil. This one can be much smaller than that be the coins to be tested. This e.g. important in the examination so-called bicolor coins. For larger diameter can also be a diameter of the coins enable.

Eine erfindungsgemäße Anordnung zur Prüfung von Münzen sieht die Anordnung einer Sendespule auf einem Ferritkern vor, dessen Länge größer ist als die Länge der Spule. Die Empfangsspule weist einen kleineren Durchmesser auf und ist an einer Seite des Ferritkerns koaxial angeordnet derart, daß sie von einem homogenen Feld der Sendespule durchflutet wird. Vorzugsweise sitzt die Empfangsspule in einer endseitigen Ringausnehmung des Kerns, insbesondere des Ferritkerns. Durch eine derartige Anordnung wird eine minimale Kopplung zwischen Sende- und Empfangsspule erhalten, so daß das Material des Meßobjekts das Ausgangssignal der Empfangsspule gut beeinflussen kann. Die Empfangsspule kann einen relativ kleinen Querschnitt im Verhältnis zum Münzdurchmesser aufweisen, so daß eine hohe Ortsauflösung erhalten wird. Der Durchmesser der Empfangsspule ist z.B. nur ein kleiner Bruchteil des Durchmessers der Münze.An arrangement according to the invention for testing coins sees the arrangement a transmitting coil on a ferrite core whose length is greater than the length of the Kitchen sink. The receiver coil has a smaller diameter and is on one side of the ferrite core arranged coaxially so as to be separated from a homogeneous field Flood coil is flooded. Preferably, the receiving coil is located in an end-side Ring recess of the core, in particular the ferrite core. By such Arrangement will be a minimum coupling between the transmitting and receiving coil obtained, so that the material of the test object, the output signal of the receiving coil good influence. The receiver coil can have a relatively small cross-section in the Have relation to the coin diameter, so that a high spatial resolution becomes. The diameter of the receiving coil is e.g. only a small fraction of the Diameter of the coin.

Nach einer Ausgestaltung der Erfindung ist eine weitere Empfangsspule auf der gegenüberliegenden Seite der Münzlaufbahn angeordnet, welche vom Magnetfeld der Sendespule, das die Münze durchdringt, durchflutet wird. Bei dieser Anordnung ergeben sich sowohl die Vorteile einer einseitigen induktiven Messung als auch einer doppelseitigen Messung (bei niedrigen Frequenzen). Insgesamt wird dabei eine Spule eingespart, während gleichzeitig zusätzliche Meßergebnisse gewonnen werden.According to one embodiment of the invention, a further receiving coil on the opposite Side of Münzlaufbahn arranged, which of the magnetic field of the transmitting coil, which penetrates the coin, is flooded. With this arrangement arise Both the advantages of a single-sided inductive measurement and a double-sided Measurement (at low frequencies). Overall, a coil is saved, while simultaneously obtaining additional measurement results.

Die Erfindung wird nachfolgend anhand von in Zeichnungen dargestellten Einzelheiten näher erläutert.

Figur 1
zeigt Beispiele von Querschnitten von zu prüfenden Münzmaterialien.
Figur 2
zeigt eine schematisch dargestellte Spulenanordnung nach der Erfindung.
The invention will be explained in more detail with reference to details shown in the drawings.
FIG. 1
shows examples of cross-sections of coins to be tested.
FIG. 2
shows a schematically illustrated coil assembly according to the invention.

Bei der nachfolgenden Beschreibung wird ausdrücklich Bezug genommen auf das Verfahren nach DE 197 26 449 C2 (nur die Frequenzmessung).In the following description, reference is expressly made to the Method according to DE 197 26 449 C2 (only the frequency measurement).

In Figur 1 sind drei Beispiele für den Querschnitt von Münzen angedeutet. Unter 1. ist eine plattierte oder galvanisierte Münze gezeigt, d. h. auf beiden Seiten mit einer Schicht versehen ist. Im mittleren Beispiel ist eine homogene Münze angedeutet, die z. B. aus Messing, Eisen oder einer Kupfernickellegierung besteht. Im unteren Beispiel ist eine sogenannte Schichtmünze dargestellt mit einem Nickelkern und äußeren Schichten aus Kupfer/ Nickellegierung. Mit Hilfe der Erfindung sollen derartige Münzen diskriminiert werden.In Figure 1, three examples of the cross section of coins are indicated. Under 1. is a plated or galvanized coin shown d. H. on both sides with one Layer is provided. In the middle example, a homogeneous coin is indicated, the z. B. brass, iron or a Kupfernickellegierung. In the example below is a so-called layer coin represented with a nickel core and outer Layers of copper / nickel alloy. With the help of the invention such Coins are discriminated against.

In Figur 2 ist ein Ferritkern 10 im Schnitt dargestellt, auf den außen eine Sendespule 12 aufgebracht ist. Die Länge des Ferritkerns 10 ist signifikant größer als die der Sendespule 12, d. h. ist nahezu das Vierfache der Spulenlänge. Die Sendespule 12 ist im Abstand zu den Enden des Ferritkerns 10 angeordnet. In einer Ringausnehmung 14 an einem Ende des Ferritkerns 10 ist eine Empfangsspule 16 angeordnet. Sie ist koaxial zur Sendespule 12, hat jedoch einen deutlich geringeren Innen- und Außendurchmesser als die Sendespule 12. Mit 18 ist eine Ebene angegeben, in der sich normalerweise eine Münze in einem Münzprüfer entlang bewegt. Die Ringausnehmung ist somit der Ebene 18 zugekehrt. Die Laufrichtung der Münzen ist etwa in Richtung des Pfeils 20.2 shows a ferrite core 10 in section, on the outside of a transmitting coil 12th is applied. The length of the ferrite core 10 is significantly larger than that of the transmitting coil 12, d. H. is nearly four times the coil length. The transmitting coil 12 is in Distance from the ends of the ferrite core 10 is arranged. In an annular recess 14 at one end of the ferrite core 10, a receiving coil 16 is arranged. It is coaxial to the transmitting coil 12, but has a much smaller inner and outer diameter as the transmitting coil 12. With 18 a plane is indicated, in which usually one Coin moves in a coin validator along. The annular recess is thus the plane 18 turned. The running direction of the coins is approximately in the direction of arrow 20.

Die von der Sendespule 12 erzeugten Magnetfeldlinien sind gestrichelt eingezeichnet. Im Bereich der Empfangsspule 16 ist das Magnetfeld weitgehend homogen. Mithin ist das die Empfangsspule 16 durchflutende und die Münze in der Meßebene 18 beaufschlagende Magnetfeld weitgehend homogen. Ein Auseinanderlaufen der Magnetlinien, wie bei 22 angedeutet, findet in größerem Abstand zur Spulenanordnung statt.The magnetic field lines generated by the transmitting coil 12 are shown in dashed lines. In the region of the receiving coil 16, the magnetic field is largely homogeneous. So it is the receiving coil 16 flowing through and the coin in the measurement plane 18 acting Magnetic field largely homogeneous. A divergence of the magnetic lines, as indicated at 22, takes place at a greater distance from the coil assembly.

Das Verfahren zur Prüfung von Münzen mit der Spulenanordnung nach Figur 2 soll nicht beschrieben werden. Es kann etwa nach Verfahren ablaufen, wie in DE 197 26 449 beschrieben.The method for testing coins with the coil arrangement according to FIG. 2 is intended not described. It can proceed, for example, according to methods, as in DE 197 26 449 described.

Claims (6)

Vorrichtung zum Prüfen von Münzen mit einer induktiven Sensoranordnung, die eine Sende- und eine Empfangsspule aufweist, deren Feld von einer Münze durchquert wird, bei der die Sendespule von einem Sendesignal gespeist wird und ein Ausgangssignal der Empfangsspule in eine Auswertevorrichtung gegeben wird, welche das Ausgangssignal auswertet, zur Erzeugung eines Annahme- oder Rückgabesignals, dadurch gekennzeichnet, daß Sende- und Empfangsspule (12, 16) auf einem Ferritkern (10) auf einer Seite der Münzlaufbahn (18) angeordnet sind und der Durchmesser der Sendespule (12) so groß ist, daß ihr Feld in der Mitte einen homogenen Verlauf zeigt und die Empfangsspule (16) im homogenen Feldbereich der Sendespule (12) angeordnet ist.An apparatus for testing coins with an inductive sensor arrangement, which has a transmitting and a receiving coil whose field is traversed by a coin, in which the transmitting coil is fed by a transmission signal and an output signal of the receiving coil is fed to an evaluation device, which outputs the output signal for generating an acceptance or return signal, characterized in that transmitting and receiving coil (12, 16) on a ferrite core (10) on one side of the coin track (18) are arranged and the diameter of the transmitting coil (12) is so large in that its field in the middle shows a homogeneous course and the receiving coil (16) is arranged in the homogeneous field region of the transmitting coil (12). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Empfangsspule (16) in einer koaxialen Ringausnehmung (14) des Ferritkerns (10) angeordnet ist.Apparatus according to claim 1, characterized in that the receiving coil (16) in a coaxial annular recess (14) of the ferrite core (10) is arranged. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Ringausnehmung (14) in der der Münzlaufbahn (18) zugekehrten Stirnseite des Ferritkerns (10) geformt ist.Apparatus according to claim 2, characterized in that the annular recess (14) in the coin track (18) facing the front side of the ferrite core (10) is formed. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Empfangsspule (16) versenkt in der Ringausnehmung (14) angeordnet ist.Apparatus according to claim 3, characterized in that the receiving coil (16) sunk in the annular recess (14) is arranged. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß eine weitere Empfangsspule auf der gegenüberliegenden Seite der Münzlaufbahn (10) angeordnet ist, welche von dem Magnetfeld der Sendespule (12) durchflutet ist, das die Münze durchdringt. Device according to one of claims 1 to 4, characterized in that a further receiving coil on the opposite side of the coin track (10) is arranged, which is flooded by the magnetic field of the transmitting coil (12), which penetrates the coin. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Durchmesser der Empfangsspule (16) deutlich kleiner ist als der Durchmesser der zu messenden Münzen.Device according to one of claims 1 to 5, characterized in that the diameter of the receiving coil (16) is significantly smaller than the diameter of the coins to be measured.
EP05005082A 2004-03-18 2005-03-09 Device for testing coins Active EP1577844B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004013286A DE102004013286B4 (en) 2004-03-18 2004-03-18 Device for checking coins
DE102004013286 2004-03-18

Publications (3)

Publication Number Publication Date
EP1577844A2 true EP1577844A2 (en) 2005-09-21
EP1577844A3 EP1577844A3 (en) 2005-12-14
EP1577844B1 EP1577844B1 (en) 2011-04-20

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ID=34833169

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Application Number Title Priority Date Filing Date
EP05005082A Active EP1577844B1 (en) 2004-03-18 2005-03-09 Device for testing coins

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EP (1) EP1577844B1 (en)
AT (1) ATE506665T1 (en)
DE (2) DE102004013286B4 (en)
ES (1) ES2361184T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046390B3 (en) 2007-09-20 2008-11-27 National Rejectors, Inc. Gmbh Method for checking coins
DE102009003993A1 (en) 2009-01-07 2010-07-08 National Rejectors, Inc. Gmbh Inductive measuring system for free-fall coins

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4403969A1 (en) * 1994-02-04 1995-08-10 Angewandte Computer Technik Ac Device for checking coins
US5458225A (en) * 1991-09-28 1995-10-17 Anritsu Corporation Coin discriminating apparatus
DE19726449A1 (en) * 1997-06-21 1999-01-07 Nat Rejectors Gmbh Method and circuit arrangement for checking coins
EP1104920A1 (en) * 1999-12-02 2001-06-06 Glory Kogyo Kabushiki Kaisha Method of and apparatus for identifying a coin
GB2393840A (en) * 2002-10-01 2004-04-07 Innovative Technology Ltd Coin validation by measuring reflected magnetic field non-homogeneity

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764897A (en) * 1971-12-28 1973-10-09 Singer Co Electromagnetic thickness gauging using a transmitting coil shaped to provide a constant field over a range of measuring distances
FR2305809A1 (en) * 1975-03-25 1976-10-22 Crouzet Sa MONETARY SECURITIES AUTHENTICATION SYSTEM
US5263566A (en) * 1991-04-10 1993-11-23 Matsushita Electric Industrial Co., Ltd. Coin discriminating apparatus
US5630494A (en) * 1995-03-07 1997-05-20 Cummins-Allison Corp. Coin discrimination sensor and coin handling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458225A (en) * 1991-09-28 1995-10-17 Anritsu Corporation Coin discriminating apparatus
DE4403969A1 (en) * 1994-02-04 1995-08-10 Angewandte Computer Technik Ac Device for checking coins
DE19726449A1 (en) * 1997-06-21 1999-01-07 Nat Rejectors Gmbh Method and circuit arrangement for checking coins
EP1104920A1 (en) * 1999-12-02 2001-06-06 Glory Kogyo Kabushiki Kaisha Method of and apparatus for identifying a coin
GB2393840A (en) * 2002-10-01 2004-04-07 Innovative Technology Ltd Coin validation by measuring reflected magnetic field non-homogeneity

Also Published As

Publication number Publication date
EP1577844B1 (en) 2011-04-20
DE102004013286B4 (en) 2006-04-13
DE502005011263D1 (en) 2011-06-01
DE102004013286A1 (en) 2005-11-10
EP1577844A3 (en) 2005-12-14
ATE506665T1 (en) 2011-05-15
ES2361184T3 (en) 2011-06-14

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