EP0311554B1 - Dispositif pour l'examen de pièces de monnaie - Google Patents

Dispositif pour l'examen de pièces de monnaie Download PDF

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Publication number
EP0311554B1
EP0311554B1 EP88730219A EP88730219A EP0311554B1 EP 0311554 B1 EP0311554 B1 EP 0311554B1 EP 88730219 A EP88730219 A EP 88730219A EP 88730219 A EP88730219 A EP 88730219A EP 0311554 B1 EP0311554 B1 EP 0311554B1
Authority
EP
European Patent Office
Prior art keywords
radiation
coins
coin
receiver
slit
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.)
Expired - Lifetime
Application number
EP88730219A
Other languages
German (de)
English (en)
Other versions
EP0311554A3 (en
EP0311554A2 (fr
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
Original Assignee
Wh Muenzpruefer Dietmar Trenner GmbH
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 Wh Muenzpruefer Dietmar Trenner GmbH filed Critical Wh Muenzpruefer Dietmar Trenner GmbH
Priority to AT8888730219T priority Critical patent/ATE104781T1/de
Publication of EP0311554A2 publication Critical patent/EP0311554A2/fr
Publication of EP0311554A3 publication Critical patent/EP0311554A3/de
Application granted granted Critical
Publication of EP0311554B1 publication Critical patent/EP0311554B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G07D5/10—Testing the rim, e.g. the milling of the rim

Definitions

  • the invention relates to a device for checking coins according to the preamble of claim 1.
  • a criterion for the authenticity or the admissibility of coins for machines is the edges of coins that are smooth, have corrugations 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 vibratable 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 test has the disadvantage that the general brightness of the edge of the coin, ie 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.
  • a coin checking arrangement according to FR-A-2373104 in which the circumference of a coin is illuminated from above in the coin channel with a narrow beam of light, the radiation reflected on the circumference of the coin being received by a phototransistor at a narrow angle.
  • This arrangement is used to distinguish between smooth and knurled coins, assuming that a smooth coin has a reflection of high brightness and a short period of time, while a coin with a knurled edge gives a reflection of lower brightness over a longer period of time due to the diffuse reflection.
  • a device for optoelectronic testing of the knurling of coins in which the edge of the coin is illuminated and reflected from above with radiation from an LED passed through a multiple slit diaphragm.
  • the knurling appears as a pattern of alternating light and dark lines with a certain grid dimension, the line pattern moving over the column when the coin is rolled through, so that the photodiode behind it is periodically illuminated and darkened and the light changes are a measure of the knurling.
  • the multiple slit aperture is adapted to the knurling of the coin to be checked with the spacing of the column and the depth of field is also matched to a specific coin, so that the knurling of only one coin can be checked due to the respective adjustment.
  • the invention is therefore based on the object of providing a device for checking coins with ripples of different types, which allows the presence of different ripples to be clearly identified, so that a flawless check of different permissible coins with ripples is ensured.
  • the individual corrugations of corrugated coins are recognized, since only narrow, maximum the width of the corrugations or areas of the coin edge corresponding to the spacing of the corrugations are irradiated or scanned.
  • the radiation receiver emits an alternating signal which is a measure of the number of corrugations per unit of travel detected.
  • the recorded numbers are compared with stored numbers of ripples of different coins, and if the numbers match, the respective coin is recognized as permissible.
  • 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 phototransistor.
  • 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 slot-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 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 is detected transversely to the direction of movement of the coin 13.
  • 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, with 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.
  • 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)
  • Basic Packing Technique (AREA)
  • Noodles (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Claims (9)

  1. Dispositif pour le contrôle de monnaies pourvues de cannelures, comportant un canal à monnaies pour recevoir les monnaies, une source de rayonnement pour exposer aux rayons la périphérie des monnaies et un récepteur de rayonnement pour saisir le rayonnement réfléchi par la périphérie des monnaies, dans lequel pour l'obtention d'une saisie en forme de raies du rayonnement réfléchi, le récepteur de rayonnement (6) est situé derrière une fente d'analyse (5), et comportant un circuit d'évaluation pour l'évaluation du changement du rayonnement lors du passage des monnaies, caractérisé en ce que la source de rayonnement (4) et le récepteur de rayonnement (6) sont agencés dans le fond du canal à monnaies (2) et en ce que le circuit d'évaluation mémorise pour les monnaies de différents genres différents nombres de cannelures par unité de trajet, le changement du rayonnement étant comparé aux nombres différents de cannelures pour la détermination de monnaies autorisées.
  2. Dispositif suivant la revendication 1, caractérisé en ce que le circuit d'évaluation (7, 11, 12) présente un circuit de comptage (12) pour saisir le changement du rayonnement, produit par les cannelures des monnaies, et un circuit de comparaison pour la comparaison des signaux saisis et de valeurs données.
  3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que le circuit d'évaluation est équipé d'au moins un filtre (8, 9) pour le filtrage du signal de changement produit par les cannelures, à partir du signal total produit par la réflexion sur la monnaie.
  4. Dispositif suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que le filtre est réalisé sous la forme d'un amplificateur (8, 9) passe-bas à contre-réaction et en ce que les circuits de comptage et de comparaison sont réalisés sous la forme d'un compteur (12) qui peut être programmé.
  5. Dispositif suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que la largeur de la fente (5) est plus petite ou égale à la distance des cannelures des monnaies à contrôler.
  6. Dispositif suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que la source de rayonnement (4) et le récepteur de rayonnement (6) sont logés dans un corps en matière synthétique muni d'ouvertures et en ce qu'est découpée une fente d'analyse (5) qui se termine d'une part à la surface de délimitation du canal à monnaies (2) et d'autre part au récepteur (6).
  7. Dispositif suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que la fente est remplie d'une matière en fibres de verre.
  8. Dispositif suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que la source de rayonnement (4) et/ou le récepteur de rayonnement (6) présentent une surface d'émission, respectivement de réception, en forme de fente.
  9. Dispositif suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que des lames sont agencées entre la fente du canal à monnaies (2) et la source de rayonnement (4) et/ou le récepteur de rayonnement (6), pour le guidage orienté du rayonnement.
EP88730219A 1987-10-06 1988-09-29 Dispositif pour l'examen de pièces de monnaie Expired - Lifetime EP0311554B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8888730219T ATE104781T1 (de) 1987-10-06 1988-09-29 Vorrichtung zur pruefung von muenzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3734114 1987-10-06
DE19873734114 DE3734114A1 (de) 1987-10-06 1987-10-06 Verfahren und vorrichtung zur pruefung von muenzen

Publications (3)

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

Family

ID=6337926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730219A Expired - Lifetime EP0311554B1 (fr) 1987-10-06 1988-09-29 Dispositif pour l'examen de pièces de monnaie

Country Status (5)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0344770U (fr) * 1989-09-08 1991-04-25
NO168615C (no) * 1989-10-17 1992-03-11 Datalab Oy Fremgangsmaate og anordning for gjenkjenning av en mynt
GB2266176B (en) * 1992-04-14 1996-06-19 Nsm Ag A device for the detection of a foreign body in a coin channel
SE0001861A0 (sv) * 2000-05-19 2001-11-20 Scan Coin Ind Ab Mynträfflingssensor

Family Cites Families (4)

* 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
GB1582847A (en) * 1976-12-02 1981-01-14 Mars Inc Coin testing device
GB2071381B (en) * 1980-03-04 1984-01-18 Mars Inc Coin testing device
DE3335347A1 (de) * 1983-09-29 1985-04-11 Siemens AG, 1000 Berlin und 8000 München Verfahren und vorrichtung zur optoelektronischen pruefung der raendelung von muenzen

Also Published As

Publication number Publication date
EP0311554A3 (en) 1990-03-28
CA1330229C (fr) 1994-06-14
ES2050719T3 (es) 1994-06-01
DE3889190D1 (de) 1994-05-26
ATE104781T1 (de) 1994-05-15
EP0311554A2 (fr) 1989-04-12
DE3734114A1 (de) 1989-04-20

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