EP0590381A2 - Méthode et dispositif pour calibrer un contrôleur de pièces de monnaie - Google Patents

Méthode et dispositif pour calibrer un contrôleur de pièces de monnaie Download PDF

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Publication number
EP0590381A2
EP0590381A2 EP93114537A EP93114537A EP0590381A2 EP 0590381 A2 EP0590381 A2 EP 0590381A2 EP 93114537 A EP93114537 A EP 93114537A EP 93114537 A EP93114537 A EP 93114537A EP 0590381 A2 EP0590381 A2 EP 0590381A2
Authority
EP
European Patent Office
Prior art keywords
coin
simulation
section
measuring probe
calibration module
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
EP93114537A
Other languages
German (de)
English (en)
Other versions
EP0590381A3 (en
EP0590381B1 (fr
Inventor
Klaus Meyer-Steffens
Manfred Dr. Gröhlich
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
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 National Rejectors Inc GmbH filed Critical National Rejectors Inc GmbH
Publication of EP0590381A2 publication Critical patent/EP0590381A2/fr
Publication of EP0590381A3 publication Critical patent/EP0590381A3/de
Application granted granted Critical
Publication of EP0590381B1 publication Critical patent/EP0590381B1/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
    • G07D5/08—Testing the magnetic or electric properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/02—Testing the dimensions, e.g. thickness, diameter; Testing the deformation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D2205/00—Coin testing devices
    • G07D2205/001—Reconfiguration of coin testing devices

Definitions

  • the invention relates to a method for calibrating a coin validator having at least one measuring probe according to the preamble of patent claim 1.
  • a coin validator has the task of examining inserted coins for properties which the coins to be accepted should have.
  • the properties include, for example, the material, the dimensions such as thickness and diameter, the transmission for light, the formation of the embossed edge and image, the weight, the hardness, etc.
  • the materials are typically tested using inductive coils, the field of which is the material of the Coin interacting occurs.
  • the coins cause a typical damping in the inductive sensors, the extent of the damping containing information about the material or the material composition of the tested coin or disc.
  • the light transmission of a coin or the embossed image are mostly checked with the help of optical sensors.
  • a light source irradiates the edge or the embossing surface of the coin, and a light-electric receiver receives the transmitted or reflected light in order to test certain geometric properties of the coin. It is also known to determine the weight or the mass of thrown-in disks, with the aid of weighing devices or also of impact measurements.
  • the momentum that a coin impacts on a baffle element is characteristic of the mass and thus the weight of the coin.
  • the hardness of the coin material can also be determined by an impact measurement. The course of impulses when a coin strikes a impact element is therefore also an indicator of the hardness of the coin.
  • the known coin validators are known to be able to check a number of different coin values. They have a microprocessor with a programmable memory for recording data to be compared with the measured values Reference values. In order to meet tolerances, it is common to provide an upper and a lower reference value per coin value, which form a so-called acceptance band. Before a coin validator reaches the user, the reference values must be saved according to the coin set that the device should be able to check. Although it is conceivable to calculate the reference values mathematically, it has been shown in practice that this method is not precise enough. The mechanical and electrical properties of a coin validator in turn are subject to more or less strong, mostly manufacturing-related fluctuations, which find their way into the measuring signals emitted by the measuring probe. So far it has been considered necessary to determine and program the reference values device-specifically.
  • test coins Selected real coins, the properties of which are to be checked in the desired distribution within the acceptance band, are thrown into the device to be verified. The reference values are determined and stored with the aid of the measurement signals obtained. Since test coins wear out over time, new ones have to be used again and again. This turns out to be cumbersome and difficult. It is also known to use so-called tokens instead of test coins, which have analog physical properties and which are produced specifically for test purposes. However, processes for producing tokens are also relatively complex.
  • the known method requires fewer test coins or -discs, however, cannot do without a minimum of coins or discs. It can also prove disadvantageous that the reference values are read into the memory during the test phase.
  • coin validators it is mostly not yet known for which currencies and accordingly for which coins they are used. It is therefore left to a later manufacturing step to calibrate the device in the manner described if the set of coins to be accepted has become known to a currency. In terms of manufacturing technology, it would therefore be much cheaper if the coin validator could already be calibrated as part of the production process.
  • the invention has for its object to provide a method for calibrating a coin validator having at least one measuring probe, which dispenses with the use of test coins and can be carried out in a simple and quick manner.
  • the invention is based on the idea that the measuring probes used in a coin validator with the interacting coin in check.
  • the material of a coin influences, for example, the electromagnetic field of a pair of coils.
  • a coin crosses one or two light barriers.
  • the diameter of a coin can be measured, for example, by crossing two spaced-apart light barriers.
  • the invention is also based on the idea that the effect that a coin passing through the coin validator has on the measuring probes can also be simulated. According to the invention, therefore, at least one measurement signal is generated with the aid of a calibration module inserted into the channel section containing the measurement probe.
  • the calibration module interacts with the measuring probe and has the physical property to which the measuring probe should respond.
  • the calibration module is "seen” by the sensor like a coin, but is not, but only has a “physical property” that is similar or similar to that of a coin. It is not necessary to produce the same effect as that of a coin, since the general "behavior" of the sensor is to be determined, which is typical of the sensor and is independent of the “disturbance variable" which triggers the measurement signal.
  • the calibration module can also be used to generate a defined sequence of operations, the one corresponding sequence of measurement signals generated.
  • a reference value characteristic of the coin validator is calculated from at least one measurement signal, for example by determining a calibration factor obtained from the measurement signal, by which a standard reference value is multiplied.
  • the simulation signal simulating the physical property corresponds in its function over time to the time course of the measurement signal generated by the accepted coin.
  • the calibration module can generate a simulation signal so that the measuring probe reacts in the same way - in absolute terms - as with an acceptable coin.
  • the simulation signal can optionally also have a different size and a modified profile.
  • the measurement signals generated by the measuring probe can be processed in a similar manner as is the case with the prior art described above, which uses disks or coins different from the real coin. In this case, the measurement signals then form calibration factors for calculating the reference values.
  • the method according to the invention has the same advantages as the previously explained prior art and has the further advantage that test disks or coins are no longer required at all. It also has the advantage that it can be carried out very quickly and easily.
  • Another advantage of the invention is that the natural uneven running of test coins or disks, which can also be polygonal, has no influence. This uneven running requires the test medium to be thrown in several times, which is associated with greater wear and expenditure of time.
  • the simulation signals can be changed in any way in order to be able to make a corresponding adjustment to the behavior of the coin validator or his measuring probes, as well as the calibration to another set of coins.
  • a particularly preferred embodiment of the method according to the invention consists in that measured values corresponding to the measurement signals are stored in the programmable memory, that corresponding correlation functions are stored in a programmable memory of an external computing device, and the computing device uses one of the correlation functions to obtain the reference value for a desired value from the measured value acceptable coin is calculated and the reference value is then stored in the programmable memory of the coin validator. All coin acceptors can use this procedure are initially programmed in production with parameter signals which are generated by the calibration module. A kind of standardized calibration therefore takes place.
  • the values stored in the programmable memory can be read into a computer which calculates the individual reference values for valid and acceptable coins with the aid of a database.
  • Correlation functions are stored in the database which are used to convert the parameter signals to the reference signals.
  • the database also receives information from outside which coins the coin acceptor should accept in which channel, whether the acceptance areas (acceptance bands) should be set wide or narrow, etc.
  • the conversion algorithms can be determined empirically. With the method described last, all coin validators are therefore programmed in an identical manner and only in the second step is an adaptation to the respective coin set or to the respective currency.
  • a coin validator usually has several measuring probes. It is therefore proposed according to the invention that at several measuring probes of the coin validator, at least one measuring signal is generated for each measuring probe.
  • a further embodiment of the invention provides that the temporal The sequence of the measurement signals approximately corresponds to the time sequence with which a coin passes the measurement probes.
  • Another object of the invention is to provide a device with which a coin validator can be calibrated without the use of test coins.
  • the dimensions of a calibration module are designed such that it can be inserted into the channel section having the measuring probes. For example, it has a width that approximately corresponds to the thickness of the maximum coin that can be accepted.
  • the calibration module according to the invention is fixed in a predetermined position in the channel section, this position must be reproducible so that the same position is achieved for all coin validators.
  • the calibration module contains at least one simulation section that is controlled by a simulation generator.
  • the simulation generator is arranged outside the channel section, preferably outside the coin validator, and is connected to the simulation section via control lines.
  • the position of the simulation section is preferably correct in the channel section corresponds to that of the measuring probe.
  • the simulation section is adjustable, for example in order to be able to calibrate coins of different sizes.
  • the simulation section has at least one magnetic coil, preferably an air coil, for generating an electromagnetic field.
  • the simulation generator can be designed such that it generates different waveforms according to time and amplitude, for example sine wave, square wave, etc.
  • the control signal can be amplitude-modulated and the modulation time in the order of the throughput time of a coin the electromagnetic field of the magnetic coil of the coin validator.
  • the simulation section can have an adjustable aperture.
  • the opening and closing of the aperture can therefore pass through a coin simulated by a light barrier.
  • the simulation section can have an adjustable reflection section. The reflection section simulates the passage of a specific embossed image of a coin to be tested to the photoelectric receiver.
  • the simulation section can have an adjustable impact element according to another embodiment of the invention.
  • the impact element is moved with a predetermined energy against an impact element in accordance with the procedure for a real coin to be tested.
  • the simulation section can have an adjustable mass element that can be weighed, for example, by a weighing device or that also interacts with an impact element for the purpose of mass determination.
  • a holding plate 10 of a coin validator not shown, is shown, which forms a coin channel 16 with a raceway support plate 12 and a raceway 14, through which inserted coins move.
  • Several measuring probes are assigned to the coin channel 16 or coin channel section, one of which is shown at 18 in FIG. 1. It consists of two coils L1 and L2, one of which is attached to the holding plate 10 and the raceway support plate 12. It goes without saying that a measuring probe arranged on one side can also be provided.
  • a flat housing 20 of a calibration module 22 is also arranged in the coin channel 16.
  • the outer dimensions are such that the housing 20 can be used with a little play, but is relatively suitable.
  • Means, not shown, serve to hold and secure the housing 20 in a predetermined position in the channel 16.
  • Air coils L3 are arranged in the housing 20. In Fig. 1 two are shown, in Fig. 3 three. Each air coil L3 is assigned to a pair of coils L1, L2. They are connected by means of lines 24 to a simulation generator, not shown.
  • the simulation generator generates a control signal for the air coils L3, which simulates the passage of a coin through the electromagnetic field of the coils L1 and L2. It is an amplitude-modulated signal, the modulation time being in the order of the transit time of the coins through the field of coils L1 and L2.
  • the time sequence of the signals applied to the individual air coils is also selected so that it corresponds to the time sequence in which the coin passes the magnetic probes.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Coins (AREA)
EP93114537A 1992-10-02 1993-09-10 Méthode et dispositif pour calibrer un contrÔleur de pièces de monnaie Expired - Lifetime EP0590381B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4233194A DE4233194C2 (de) 1992-10-02 1992-10-02 Verfahren zum Eichen eines mindestens eine Münze akzeptierenden Münzprüfers und Eichmodul
DE4233194 1992-10-02

Publications (3)

Publication Number Publication Date
EP0590381A2 true EP0590381A2 (fr) 1994-04-06
EP0590381A3 EP0590381A3 (en) 1995-11-02
EP0590381B1 EP0590381B1 (fr) 1999-04-07

Family

ID=6469507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114537A Expired - Lifetime EP0590381B1 (fr) 1992-10-02 1993-09-10 Méthode et dispositif pour calibrer un contrÔleur de pièces de monnaie

Country Status (4)

Country Link
US (1) US5495931A (fr)
EP (1) EP0590381B1 (fr)
DE (2) DE4233194C2 (fr)
ES (1) ES2131547T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9611659D0 (en) * 1996-06-05 1996-08-07 Coin Controls Coin validator calibration
US6298973B1 (en) 1999-11-10 2001-10-09 Parker Engineering & Manufacturing Co., Inc. Multiple coin analyzer system
JP2001175912A (ja) * 1999-12-21 2001-06-29 Laurel Bank Mach Co Ltd 硬貨判別装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918565A (en) * 1972-10-12 1975-11-11 Mars Inc Method and apparatus for coin selection utilizing a programmable memory
DE2452710A1 (de) * 1974-11-06 1976-05-13 Siemens Ag Anordnung zur simulation von grenzmuenzen zur einstellung elektronischer muenzpruefer
EP0072189A2 (fr) * 1981-08-10 1983-02-16 LANDIS & GYR COMMUNICATIONS (U.K.) LTD. Procédé et dispositif pour calibrer un appareil de contrôle de pièces de monnaie
EP0101276A2 (fr) * 1982-08-06 1984-02-22 Kabushiki Kaisha Universal Procédé et dispositif pour la discrimination de pièces de monnaie ou de billets de banque

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8400046D0 (en) * 1984-01-03 1984-02-08 Starpoint Electrics Ltd Coin checking
CA1240056A (fr) * 1983-12-06 1988-08-02 Adrian Lewis Jetons, et dispositifs de reception-tri de jetons
JPH0654509B2 (ja) * 1988-08-11 1994-07-20 株式会社日本コンラックス 硬貨選別精度設定装置
US5056644A (en) * 1988-08-12 1991-10-15 Parker Donald O Coin analyzer system and apparatus
US5067604A (en) * 1988-11-14 1991-11-26 Bally Manufacturing Corporation Self teaching coin discriminator
JP2936752B2 (ja) * 1991-03-04 1999-08-23 富士電機株式会社 硬貨選別装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918565A (en) * 1972-10-12 1975-11-11 Mars Inc Method and apparatus for coin selection utilizing a programmable memory
US3918565B1 (en) * 1972-10-12 1993-10-19 Mars, Incorporated Method and apparatus for coin selection utilizing a programmable memory
DE2452710A1 (de) * 1974-11-06 1976-05-13 Siemens Ag Anordnung zur simulation von grenzmuenzen zur einstellung elektronischer muenzpruefer
EP0072189A2 (fr) * 1981-08-10 1983-02-16 LANDIS & GYR COMMUNICATIONS (U.K.) LTD. Procédé et dispositif pour calibrer un appareil de contrôle de pièces de monnaie
EP0101276A2 (fr) * 1982-08-06 1984-02-22 Kabushiki Kaisha Universal Procédé et dispositif pour la discrimination de pièces de monnaie ou de billets de banque

Also Published As

Publication number Publication date
DE4233194C2 (de) 1995-09-21
DE4233194A1 (de) 1994-04-07
US5495931A (en) 1996-03-05
DE59309498D1 (de) 1999-05-12
EP0590381A3 (en) 1995-11-02
ES2131547T3 (es) 1999-08-01
EP0590381B1 (fr) 1999-04-07

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