EP0311554A2 - Apparatus for testing coins - Google Patents

Apparatus for testing coins Download PDF

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Publication number
EP0311554A2
EP0311554A2 EP88730219A EP88730219A EP0311554A2 EP 0311554 A2 EP0311554 A2 EP 0311554A2 EP 88730219 A EP88730219 A EP 88730219A EP 88730219 A EP88730219 A EP 88730219A EP 0311554 A2 EP0311554 A2 EP 0311554A2
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EP
European Patent Office
Prior art keywords
coin
radiation
receiver
coins
edge
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
EP88730219A
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German (de)
French (fr)
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EP0311554B1 (en
EP0311554A3 (en
Inventor
Siegfried Seiler
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.)
Wh Muenzpruefer Dietmar Trenner GmbH
Wh Munzprufer Dietmar Trenner GmbH
Original Assignee
Wh Muenzpruefer Dietmar Trenner GmbH
Wh Munzprufer Dietmar Trenner GmbH
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Application filed by Wh Muenzpruefer Dietmar Trenner GmbH, Wh Munzprufer Dietmar Trenner GmbH filed Critical Wh Muenzpruefer Dietmar Trenner GmbH
Priority to AT8888730219T priority Critical patent/ATE104781T1/en
Publication of EP0311554A2 publication Critical patent/EP0311554A2/en
Publication of EP0311554A3 publication Critical patent/EP0311554A3/en
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Publication of EP0311554B1 publication Critical patent/EP0311554B1/en
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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
    • G07D5/10—Testing the rim, e.g. the milling of the rim

Definitions

  • the invention relates to a method and a device for checking coins according to the preamble of claim 1 and according to the preamble of the independent claim 2.
  • a criterion for the authenticity or the admissibility of coins for machines is the edges of coins that are smooth, have ripples or other impressions.
  • a large number of different ripple tests for coins are known in the prior art.
  • DE-OS 28 25 094 describes a method and an apparatus for knurling coins, in which the coin track has an oscillatable section or the coin track is assigned an oscillatable element which can be brought into engagement with the edge of a coin, the vibrations of the oscillatable element Element detected and converted into an electrical signal.
  • This embodiment has the disadvantage that the vibrating elements can be bent by mechanical intervention by means of wires or bands through the coin slot, so that they become completely ineffective or give a wrong result.
  • reflection measurements of the edge surface of the coin are known for testing the coin, the degree of reflection being reduced in the presence of ripples, so that the signal emitted by the receiver is reduced.
  • This type of check has the disadvantage that the general brightness of the edge of the coin, i.e. the entire reflected radiation of the coin is detected so that worn or polished ripples can be recognized as smooth coins and scratched smooth coins as corrugated coins. Darkened coins can also be interpreted as fluted coins.
  • the invention is therefore based on the object of providing a method and a device for checking coins in which the presence of ripples is clearly recognized, so that a flawless check is ensured on the basis of different ripples.
  • the radiation receiver emits an alternating signal which is a measure of the number of corrugations per detected path unit. Since a path scan is carried out, ie a scan of the number of corrugations per path unit, there is no time dependency, so that the method can run very slowly or very quickly.
  • Fig. 1 denotes the coin slot, which merges into the obliquely arranged coin channel 2.
  • an illumination window 3 is provided over at least part of the width of the coin channel 2, which can be covered with a transparent material, a radiation source 4, for example a light-emitting diode emitting in the infrared radiation region, being arranged under the illumination window 3.
  • a scanning slot 5 is provided in the floor transversely to the coin channel 2 at least over part of its width, behind which a receiver 6 is provided, which can be designed as a photodiode or photo transistor.
  • the scanning slot 5 can be designed differently, for example it can be realized by a narrow glass fiber line that leads to the receiver 6. On the other hand, narrow screens can be provided which end in the bottom of the coin channel 2 and direct the radiation onto the receiver 6. Radiation source 4 and receiver 6 can also be mounted in a plastic body, wherein the scanning slot 5 can be cut into the body. In another embodiment, the receiver 6 is pointed in a wedge shape, so that there is a slit-shaped receiver surface.
  • the radiation source 4 has a larger illumination window 3, while the receiver 6 is arranged behind the narrow slot 5.
  • the invention can also be implemented in such a way that the radiation source 4 irradiates the passing coin 7 through a narrow slit and the radiation receiver 6 receives the radiation caused by the strip-shaped radiation reflected on the coin 7 over a wider window.
  • a narrow slit can be provided for both radiation source 4 and radiation receiver 6.
  • the radiation receiver 6 which is designed as a phototransistor or photodiode, is connected to a two-stage low-pass counter-coupled amplifier 7, the individual amplifier stages 8, 9 being connected to one another via a high-pass filter 10.
  • a Schmitt trigger 11 for pulse shaping is connected to the output of the amplifier 7 and is connected to a programmable counter 12 or a microprocessor.
  • the coin 13 After insertion into the coin slot, the coin 13 rolls in the coin channel 2 past the radiation source 4 and the radiation receiver or the scanning slot 5, the edge of the coin being irradiated from a certain position relative to the illumination window 3.
  • the radiation reflected at the edge of the coin 13 reaches the receiver 6 via the scanning slot 5, only a narrow strip-shaped area in each case transversely to the direction of movement of the coin 13 is detected.
  • the coin 13 If the coin 13 is provided with ripples at the edge, the reflectance changes depending on the respective ripple, so that a signal with an AC voltage component is present at the output of the receiver 6.
  • the amplifier 7 amplifies the high voltage AC voltage, while the low frequencies are fed back via the respective resistor.
  • the Schmitt trigger 11 converts the AC signal into digital signals, each pulse corresponding to a ripple.
  • the digital signal supplied by the Schmitt trigger 11 is fed to the programmable counter 12, which increases the counter reading with each pulse.
  • Characteristics assigned to the different coins which correspond to a certain number of corrugations per path and / or time unit, are defined as predefined, permanently programmed counter readings. It is therefore determined via the radiation source 4 and the receiver 6 and the evaluation circuit, the number of corrugations and compared with a predetermined number, so that it can be determined whether the coin to be checked is an approved coin or not.
  • a programmable counter 12 is used; of course, the signals supplied by the Schmitt trigger 11 can also be evaluated by a microprocessor.
  • the end the test must be specified.
  • the expected time that a coin travels in the coin channel is predetermined and this time is a measure of the end of the test.

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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)
  • Basic Packing Technique (AREA)

Abstract

There are proposed a method and an apparatus for testing coins, in which each coin is guided into a coin channel, the edge of the coin is irradiated and the reflected radiation is detected. The edge of the coin is irradiated and sensed in strip form transversely relative to the coin channel via a slit or the like, in such a way that differences in reflection occurring in the presence of grooves on the edge of the coin and caused by the grooves are obtained in the form of a change signal. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Prüfung von Münzen nach dem Oberbegriff des Anspruchs 1 bzw. nach dem Ober­begriff des nebengeordneten Anspruchs 2.The invention relates to a method and a device for checking coins according to the preamble of claim 1 and according to the preamble of the independent claim 2.

Ein Kriterium für die Echtheit bzw. die Zulässigkeit von Münzen für Automaten sind die Ränder von Münzen, die glatt sind, Riffel oder andere Einprägungen aufweisen. Im Stand der Technik ist eine Vielzahl von unterschiedlichen Riffel­prüfungen bei Münzen bekannt. In der DE-OS 28 25 094 ist ein Verfahren und eine Vorrichtung zur Rändelprüfung von Münzen beschrieben, bei denen die Münzlaufbahn einen schwingungsfähigen Abschnitt aufweist oder der Münzlaufbahn ein mit dem Rand einer Münze in Eingriff bringbares schwingungs­fähiges Element zugeordnet ist, wobei die Schwin­gungen des schwingungsfähigen Elementes erfaßt und in ein elektrisches Signal umgewandelt werden.A criterion for the authenticity or the admissibility of coins for machines is the edges of coins that are smooth, have ripples or other impressions. A large number of different ripple tests for coins are known in the prior art. DE-OS 28 25 094 describes a method and an apparatus for knurling coins, in which the coin track has an oscillatable section or the coin track is assigned an oscillatable element which can be brought into engagement with the edge of a coin, the vibrations of the oscillatable element Element detected and converted into an electrical signal.

Diese Ausführungsform hat den Nachteil, daß durch mechanischen Eingriff mittels Drähten oder Bändern durch den Münzeinwurfschlitz die schwingungsfähigen Elemente verbogen werden können, so daß sie völlig unwirksam werden oder ein falsches Ergebnis liefern.This embodiment has the disadvantage that the vibrating elements can be bent by mechanical intervention by means of wires or bands through the coin slot, so that they become completely ineffective or give a wrong result.

Weiterhin sind für eine Prüfung der Münze Reflexionsmessungen der Randoberfläche der Münze bekannt, wobei sich bei Vorhandensein von Riffeln der Reflexionsgrad verringert, so daß sich das vom Empfänger abgegebene Signal verkleinert. Bei dieser Art der Prüfung ist der Nachteil vorhanden, daß die allgemeine Helligkeit des Randes der Münze, d.h. die gesamte reflektierte Strahlung der Münze erfaßt wird, so daß abgenutzte oder polierte Riffel als glatte Münzen und zerkratzte glatte Münzen als geriffelte Münze erkannt werden können. Nachgedunkelte Münzen können ebenfalls als geriffelte Münzen interpretiert werden.Furthermore, reflection measurements of the edge surface of the coin are known for testing the coin, the degree of reflection being reduced in the presence of ripples, so that the signal emitted by the receiver is reduced. This type of check has the disadvantage that the general brightness of the edge of the coin, i.e. the entire reflected radiation of the coin is detected so that worn or polished ripples can be recognized as smooth coins and scratched smooth coins as corrugated coins. Darkened coins can also be interpreted as fluted coins.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zur Prüfung von Münzen zu schaffen, bei denen das Vorhanden­sein von Riffeln eindeutig erkannt werden, so daß eine einwandfreie Prüfung aufgrund von unter­schiedlichen Riffeln gewährleistet ist.The invention is therefore based on the object of providing a method and a device for checking coins in which the presence of ripples is clearly recognized, so that a flawless check is ensured on the basis of different ripples.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Hauptanspruchs bzw. des nebengeordneten Vorrichtungsanspruchs gelöst.This object is achieved according to the invention by the characterizing features of the main claim or the subordinate device claim.

Durch Vorsehen eines oder mehrerer schmaler Schlitze im Münzkanal, durch die die vorbeilaufende Münze bestrahlt wird und/oder durch die die von der Münze reflektierte Strahlung abgetastet wird, wird nicht mehr die Gesamt­reflexion des gesamten bestrahlten Randes der Münze erfaßt, sondern es werden die einzelnen Riffel einer geriffelten Münze erkannt, da jeweils nur schmale, der Breite der Riffel oder dem Abstand der Riffel ent­sprechende Bereiche des Münzenrandes bestrahlt bzw. abgetastet werden. Auf diese Weise gibt der Strahlungsempfänger ein Wechselsignal ab, das ein Maß für die Anzahl der Riffel pro erfaßte Wegeinheit ist. Da eine Wegabtastung vorgenommen wird, d.h. eine Abtastung der Anzahl der Riffel pro Wegeinheit, ist keine Zeitab­hängigkeit gegeben, so daß das Verfahren ganz langsam oder ganz schnell ablaufen kann.By providing one or more narrow slots In the coin channel, through which the passing coin is irradiated and / or through which the radiation reflected by the coin is scanned, the total reflection of the entire irradiated edge of the coin is no longer detected, but the individual corrugations of a corrugated coin are recognized, since in each case only narrow areas of the coin edge corresponding to the width of the corrugations or the spacing of the corrugations are irradiated or scanned. In this way, the radiation receiver emits an alternating signal which is a measure of the number of corrugations per detected path unit. Since a path scan is carried out, ie a scan of the number of corrugations per path unit, there is no time dependency, so that the method can run very slowly or very quickly.

Durch die in den Unteransprüchen angegebenen Maßnahmen sind vorteilhafte Weiterbildungen oder Verbesserungen möglich. Ein Ausführungs­beispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

  • Fig. 1 eine Ansicht auf den Münzkanal einer Münzprüfeinrichtung mit der erfindungsgemäßen Vorrichtung, und
  • Fig. 2 eine Auswerteschaltung, die mit dem Empfänger nach der Erfindung verbunden ist.
Advantageous further developments or improvements are possible through the measures specified in the subclaims. An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. Show it:
  • Fig. 1 is a view of the coin channel of a coin testing device with the device according to the invention, and
  • Fig. 2 shows an evaluation circuit which is connected to the receiver according to the invention.

In Fig. 1 ist mit 1 der Münzeinwurfschlitz bezeichnet, der in den schräg angeordneten Münzkanal 2 übergeht. Am Boden des Münzkanals 2 ist über zumindest einen Teil der Breite des Münzkanals 2 ein Ausleuchtungsfenster 3 vorge­sehen, das mit einem durchsichtigen Material abgedeckt sein kann, wobei unter dem Ausleuchtungs­fenster 3 eine Strahlungsquelle 4 beispielsweise eine im infraroten Strahlungsbereich abstrahlende Leuchtdiode angeordnet ist. Benachbart zum Ausleuchtungsfenster ist im Boden quer zum Münzkanal 2 zumindest über einen Teil seiner Breite ein Abtastschlitz 5 vorgesehen, hinter dem ein Empfänger 6 vorgesehen ist, der als Fotodiode oder Fototransistor ausgebildet sein kann.In Fig. 1, 1 denotes the coin slot, which merges into the obliquely arranged coin channel 2. On the bottom of the coin channel 2, an illumination window 3 is provided over at least part of the width of the coin channel 2, which can be covered with a transparent material, a radiation source 4, for example a light-emitting diode emitting in the infrared radiation region, being arranged under the illumination window 3. Adjacent to the illumination window, a scanning slot 5 is provided in the floor transversely to the coin channel 2 at least over part of its width, behind which a receiver 6 is provided, which can be designed as a photodiode or photo transistor.

Der Abtastschlitz 5 kann unterschiedlich ausge­bildet sein, beispielsweise kann er durch eine schmale Glasfaserleitung realisiert werden, die auf den Empfänger 6 führt. Andererseits können schmale Blenden vorgesehen sein, die im Boden des Münzkanals 2 enden und die Strahlung auf den Empfänger 6 leiten. Strahlungsquelle 4 und Empfänger 6 können auch in einem Kunststoffkörper gelagert sein, wobei der Abtastschlitz 5 in den Körper eingeschnitten sein kann. In einem anderen Ausführungsbeispiel ist der Empfänger 6 keilförmig angespitzt, so daß sich eine schlitzförmige Empfängerfläche ergibt.The scanning slot 5 can be designed differently, for example it can be realized by a narrow glass fiber line that leads to the receiver 6. On the other hand, narrow screens can be provided which end in the bottom of the coin channel 2 and direct the radiation onto the receiver 6. Radiation source 4 and receiver 6 can also be mounted in a plastic body, wherein the scanning slot 5 can be cut into the body. In another embodiment, the receiver 6 is pointed in a wedge shape, so that there is a slit-shaped receiver surface.

In dem dargestellten Ausführungsbeispiel weist die Strahlungsquelle 4 ein größeres Ausleuchtungs­fenster 3 auf, während der Empfänger 6 hinter dem schmalen Schlitz 5 angeordnet ist.In the exemplary embodiment shown, the radiation source 4 has a larger illumination window 3, while the receiver 6 is arranged behind the narrow slot 5.

Die Erfindung kann auch in der Weise realisiert sein, daß die Strahlungsquelle 4 die vorbei­laufende Münze 7 durch einen schmalen Schlitz streifenförmig bestrahlt und der Strahlungs­empfänger 6 die durch die streifenförmige Bestrahlung hervorgerufene an der Münze 7 reflektierte Strahlung über ein breiteres Fenster empfängt. Selbstverständlich können sowohl für Strahlungsquelle 4 als auch für Strahlungsempfänger 6 jeweils ein schmaler Schlitz vorgesehen sein.The invention can also be implemented in such a way that the radiation source 4 irradiates the passing coin 7 through a narrow slit and the radiation receiver 6 receives the radiation caused by the strip-shaped radiation reflected on the coin 7 over a wider window. Of course, a narrow slit can be provided for both radiation source 4 and radiation receiver 6.

In der Fig. 2 ist eine Auswerteschaltung der von dem Strahlungsempfänger 6 gelieferten Signale dargestellt. Der als Fototransistor oder Fotodiode ausgebildete Strahlungsempfänger 6 ist an einen zweistufigen tiefpaßgegen­gekoppelten Verstärker 7 angeschlossen, wobei die einzelnen Verstärkerstufen 8, 9 über einen Hochpaß 10 miteinander verbunden sind. An den Ausgang des Verstärkers 7 ist ein Schmitt-Trigger 11 zur Impulsformung ange­schlossen, der mit einem programmierbaren Zähler 12 oder einem Mikroprozessor verbunden ist.2 shows an evaluation circuit of the signals supplied by the radiation receiver 6. The radiation receiver 6, which is designed as a phototransistor or photodiode, is connected to a two-stage low-pass counter-coupled amplifier 7, the individual amplifier stages 8, 9 being connected to one another via a high-pass filter 10. A Schmitt trigger 11 for pulse shaping is connected to the output of the amplifier 7 and is connected to a programmable counter 12 or a microprocessor.

Nach Einwurf in den Münzschlitz rollt die Münze 13 im Münzkanal 2 an der Strahlungs­quelle 4 und dem Strahlungsempfänger bzw. dem Abtastschlitz 5 vorbei, wobei ab einer bestimmten Stellung zum Ausleuchtungsfenster 3 der Rand der Münze bestrahlt wird. Über den Abtastschlitz 5 gelangt die an dem Rand der Münze 13 re­flektierte Strahlung auf den Empfänger 6, wobei jeweils nur ein schmaler streifenförmiger Bereich quer zur Bewegungsrichtung der Münze 13 erfaßt wird. Wenn die Münze 13 am Rand mit Riffeln versehen ist, ändert sich abhängig von dem jeweiligen Riffel der Reflexionsgrad, so daß am Ausgang des Empfängers 6 ein Signal mit einer Wechselspannungskomponente anliegt. Der Verstärker 7 verstärkt die Wechselspannung hoher Frequenz, während die Tiefenfrequenzen über den jeweiligen Widerstand gegengekoppelt werden. Der Schmitt-Trigger 11 wandelt das Wechselspannungssignal in digitale Signale um, wobei jeder Impuls einem Riffel entspricht. Mit dieser Anordnung ist somit der Reflexions­unterschied auf der Oberfläche des Randes der Münze quantifizierbar. Das vom Schmitt-Trigger 11 gelieferte Digitalsignal wird dem programmierbaren Zähler 12 zugeführt, der bei jedem Impuls den Zählerstand erhöht. Den verschiedenen Münzen zugeordnete Kenngrößen, die einer bestimmten Riffelanzahl pro Weg- und/oder Zeiteinheit entsprechen, sind als vorgegebene, fest einprogrammier­te Zählerstände festgelegt. Es wird daher über die Strahlungsquelle 4 und den Empfänger 6 und die Auswerteschaltung die Riffelanzahl festgestellt und mit einer vorgegebenen Anzahl verglichen, so daß bestimmt werden kann, ob die zu prüfende Münze eine zugelassene Münze ist oder nicht. Im dargestellten Ausführungsbeispiel wird ein programmierbarer Zähler 12 verwendet, selbstverständlich kann die Auswertung der vom Schmitt-Trigger 11 gelieferten Signale auch von einem Mikroprozessor vorgenommen werden.After insertion into the coin slot, the coin 13 rolls in the coin channel 2 past the radiation source 4 and the radiation receiver or the scanning slot 5, the edge of the coin being irradiated from a certain position relative to the illumination window 3. The radiation reflected at the edge of the coin 13 reaches the receiver 6 via the scanning slot 5, only a narrow strip-shaped area in each case transversely to the direction of movement of the coin 13 is detected. If the coin 13 is provided with ripples at the edge, the reflectance changes depending on the respective ripple, so that a signal with an AC voltage component is present at the output of the receiver 6. The amplifier 7 amplifies the high voltage AC voltage, while the low frequencies are fed back via the respective resistor. The Schmitt trigger 11 converts the AC signal into digital signals, each pulse corresponding to a ripple. With this arrangement, the difference in reflection on the surface of the edge of the coin can thus be quantified. The digital signal supplied by the Schmitt trigger 11 is fed to the programmable counter 12, which increases the counter reading with each pulse. Characteristics assigned to the different coins, which correspond to a certain number of corrugations per path and / or time unit, are defined as predefined, permanently programmed counter readings. It is therefore determined via the radiation source 4 and the receiver 6 and the evaluation circuit, the number of corrugations and compared with a predetermined number, so that it can be determined whether the coin to be checked is an approved coin or not. In the exemplary embodiment shown, a programmable counter 12 is used; of course, the signals supplied by the Schmitt trigger 11 can also be evaluated by a microprocessor.

Wenn eine glatte Münze vom Empfänger erfaßt wird, ist kein Wechselsignal zu erwarten, so daß das Ende der Prüfung vorgegeben sein muß. Beispielsweise ist die zu erwartende Zeit, die eine Münze für ihren Weg im Münzkanal zurücklegt, vorbestimmt und diese Zeit ist ein Maß für das Ende der Prüfung.If a smooth coin is picked up by the receiver, no change signal is expected, so the end the test must be specified. For example, the expected time that a coin travels in the coin channel is predetermined and this time is a measure of the end of the test.

Claims (11)

1. Verfahren zur Prüfung von Münzen, bei dem die jeweilige Münze in einem Münzkanal geführt wird, der Rand der Münze bestrahlt und die reflektierte Strahlung erfaßt wird,
dadurch gekennzeichnet,
daß der Rand der Münze quer zur Richtung der Bewegung der Münze streifenförmig bestrahlt wird und/oder die an dem Rand der Münze reflektierte Strahlung quer zur Bewegungsrichtung der Münzen streifenförmig abgetastet wird.1. A method for checking coins, in which the respective coin is guided in a coin channel, the edge of the coin is irradiated and the reflected radiation is detected,
characterized,
that the edge of the coin is irradiated in a strip shape transversely to the direction of movement of the coin and / or the radiation reflected on the edge of the coin is scanned in strip form transversely to the direction of movement of the coins. 2. Verfahren nach Anspruch 1, dadurch gekenn­zeichnet, daß das durch die streifenförmige Bestrahlung und/oder Abtastung auftretende, den Riffeln entsprechende Wechselsignal erfaßt und in Impulse umgewandelt wird und die Impulse gezählt werden und daß die Anzahl der Impulse mit einer vorgegebenen, der Anzahl der Riffel pro Weg- und/oder Zeiteinheit von Vergleichsmünzen ent­sprechenden Zahl verglichen wird.2. The method according to claim 1, characterized in that the alternating signal corresponding to the ripples which occurs due to the strip-shaped irradiation and / or scanning is detected and converted into pulses and the pulses are counted and that the number of pulses with a predetermined number of times Riffel is compared per path and / or time unit of the corresponding number of coins. 3. Vorrichtung zur Prüfung von Münzen mit einem Münzkanal zur Aufnahme der Münzen, einer Strahlungsquelle zum Bestrahlen des Randes der Münze und einem Strahlungsempfänger zum Erfassen der an dem Rand der Münze reflektierten Strahlung,
dadurch gekennzeichnet,
daß quer zum Münzkanal (2) mindestens ein Schlitz (5) vorgesehen ist, hinter dem der Strahlungsempfänger (6) und/oder die Strahlungsquelle (4) angeordnet ist.3. Device for checking coins with a coin channel for receiving the coins, a radiation source for irradiating the edge of the coin and a radiation receiver for detecting the radiation reflected at the edge of the coin,
characterized,
that at least one slot (5) is provided transversely to the coin channel (2), behind which the Radiation receiver (6) and / or the radiation source (4) is arranged. 4. Vorrichtung nach Anspruch 3, dadurch gekenn­zeichnet, daß der Strahlungsempfänger (6) mit einer Auswerteschaltung (7,11,12) verbunden ist, die eine Zählschaltung (12) zur Erfassung der durch die Riffel der Münzen erzeugten Impulssignale und eine Vergleichsschaltung zum Vergleich der erfaßten Signale mit vorgegebenen Werten aufweist.4. The device according to claim 3, characterized in that the radiation receiver (6) is connected to an evaluation circuit (7, 11, 12) which has a counting circuit (12) for detecting the pulse signals generated by the ripple of the coins and a comparison circuit for comparison of the detected signals with predetermined values. 5. Vorrichtung nach Anspruch 4, dadurch gekenn­zeichnet, daß die Auswerteschaltung mindestens ein Filter (8,9) zur Aus­siebung des durch die Riffel erzeugten Wechselsignals aus dem gesamten, durch die Reflexion an der Münze erzeugten Signals vorgesehen ist.5. The device according to claim 4, characterized in that the evaluation circuit is provided at least one filter (8,9) for screening out the alternating signal generated by the ripples from the entire signal generated by the reflection on the coin. 6. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß das Filter als tiefpaßgegengekoppelter Verstärker (8,9) und die Zähl- und Vergleichsschaltung als programmierbarer Zähler (12) ausge­bildet sind.6. Device according to one of claims 3 to 5, characterized in that the filter as a low-pass feedback amplifier (8,9) and the counting and comparison circuit are designed as a programmable counter (12). 7. Vorrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die Breite des Schlitzes (5) kleiner oder gleich dem Abstand der Riffel der zu prüfenden Münze ist.7. Device according to one of claims 3 to 6, characterized in that the width of the slot (5) is less than or equal to the distance between the corrugations of the coin to be checked. 8. Vorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß Strahlungs­quelle (4) und Strahlungsempfänger (6) in einem mit Öffnungen versehenen Kunststoff­körper aufgenommen sind und daß ein Abtastschlitz (5) eingeschnitten ist, der einerseits an der Begrenzungsfläche des Münzkanals (2) und andererseits an dem Empfänger (6) endet.8. Device according to one of claims 3 to 7, characterized in that the radiation source (4) and radiation receiver (6) are accommodated in a plastic body provided with openings and that a scanning slot (5) is cut, which on the one hand on the boundary surface of the coin channel ( 2) and on the other hand ends at the receiver (6). 9. Vorrichtung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß der Schlitz mit Glasfasermaterial gefüllt ist.9. Device according to one of claims 3 to 8, characterized in that the slot is filled with glass fiber material. 10. Vorrichtung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß die Strahlungs­quelle (4) und/oder der Strahlungsempfänger (6) eine schlitzförmige Sender- bzw. Empfänger­fläche aufweisen.10. Device according to one of claims 3 to 8, characterized in that the radiation source (4) and / or the radiation receiver (6) have a slot-shaped transmitter or receiver surface. 11. Vorrichtung nach einem der Ansprüche 3 bis 10, dadurch gekennzeichnet, daß zwischen Schlitz am Münzkanal (2) und Strahlungsquelle (4) und/oder Strahlungsempfänger (6) Blenden zur gerichteten Führung der Strahlung angeordnet sind.11. Device according to one of claims 3 to 10, characterized in that between the slot on the coin channel (2) and radiation source (4) and / or radiation receiver (6) diaphragms are arranged for the directed guidance of the radiation.
EP88730219A 1987-10-06 1988-09-29 Apparatus for testing coins Expired - Lifetime EP0311554B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8888730219T ATE104781T1 (en) 1987-10-06 1988-09-29 DEVICE FOR TESTING COINS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873734114 DE3734114A1 (en) 1987-10-06 1987-10-06 METHOD AND DEVICE FOR CHECKING COINS
DE3734114 1987-10-06

Publications (3)

Publication Number Publication Date
EP0311554A2 true EP0311554A2 (en) 1989-04-12
EP0311554A3 EP0311554A3 (en) 1990-03-28
EP0311554B1 EP0311554B1 (en) 1994-04-20

Family

ID=6337926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730219A Expired - Lifetime EP0311554B1 (en) 1987-10-06 1988-09-29 Apparatus for testing coins

Country Status (5)

Country Link
EP (1) EP0311554B1 (en)
AT (1) ATE104781T1 (en)
CA (1) CA1330229C (en)
DE (2) DE3734114A1 (en)
ES (1) ES2050719T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416932A1 (en) * 1989-09-08 1991-03-13 Glory Kogyo Kabushiki Kaisha Coin-discriminating device
US5236074A (en) * 1989-10-17 1993-08-17 Datalab Oy Method and a means for recognizing a coin
GB2266176A (en) * 1992-04-14 1993-10-20 Nsm Ag Photoelectric monitoring of coin operated apparatus
WO2001091063A1 (en) * 2000-05-19 2001-11-29 Scan Coin Industries Ab A coin knurling sensor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089400A (en) * 1976-01-23 1978-05-16 Gregory Jr Lester Coin testing device
FR2373104A1 (en) * 1976-12-02 1978-06-30 Mars Inc COIN TEST APPARATUS
DE3335347A1 (en) * 1983-09-29 1985-04-11 Siemens AG, 1000 Berlin und 8000 München Method and device for testing the milling of coins opto-electronically

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2071381B (en) * 1980-03-04 1984-01-18 Mars Inc Coin testing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089400A (en) * 1976-01-23 1978-05-16 Gregory Jr Lester Coin testing device
FR2373104A1 (en) * 1976-12-02 1978-06-30 Mars Inc COIN TEST APPARATUS
DE3335347A1 (en) * 1983-09-29 1985-04-11 Siemens AG, 1000 Berlin und 8000 München Method and device for testing the milling of coins opto-electronically

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416932A1 (en) * 1989-09-08 1991-03-13 Glory Kogyo Kabushiki Kaisha Coin-discriminating device
US5236074A (en) * 1989-10-17 1993-08-17 Datalab Oy Method and a means for recognizing a coin
GB2266176A (en) * 1992-04-14 1993-10-20 Nsm Ag Photoelectric monitoring of coin operated apparatus
US5383546A (en) * 1992-04-14 1995-01-24 Nsm Aktiengesellschaft Device for the detection of a foreign body in a coin channel
GB2266176B (en) * 1992-04-14 1996-06-19 Nsm Ag A device for the detection of a foreign body in a coin channel
WO2001091063A1 (en) * 2000-05-19 2001-11-29 Scan Coin Industries Ab A coin knurling sensor

Also Published As

Publication number Publication date
DE3734114A1 (en) 1989-04-20
CA1330229C (en) 1994-06-14
EP0311554B1 (en) 1994-04-20
DE3889190D1 (en) 1994-05-26
EP0311554A3 (en) 1990-03-28
ATE104781T1 (en) 1994-05-15
ES2050719T3 (en) 1994-06-01

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