EP1035519A1 - Dispositif de reconnaissance de pièces de monnaie - Google Patents

Dispositif de reconnaissance de pièces de monnaie Download PDF

Info

Publication number: EP1035519A1
Authority: EP; European Patent Office
Prior art keywords: signal; electromagnetic radiation; transmitter; coin; evaluation
Prior art date: 1999-03-08
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

EP00250044A

Other languages

German (de)

English (en)

Other versions

EP1035519B1 (fr

Inventor

Wolfgang Rompel

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.)

Scan Coin Industries AB

Original Assignee

F Zimmermann GmbH and Co KG

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.)

1999-03-08

Filing date

2000-02-10

Publication date

2000-09-13

2000-02-10 Application filed by F Zimmermann GmbH and Co KG filed Critical F Zimmermann GmbH and Co KG

2000-09-13 Publication of EP1035519A1 publication Critical patent/EP1035519A1/fr

2005-08-31 Application granted granted Critical

2005-08-31 Publication of EP1035519B1 publication Critical patent/EP1035519B1/fr

2020-02-10 Anticipated expiration legal-status Critical

Status 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
- G07D5/005—Testing the surface pattern, e.g. relief
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S209/00—Classifying, separating, and assorting solids
- Y10S209/938—Illuminating means facilitating visual inspection

Definitions

the invention relates to a device for coin recognition, with a transmitter element for electromagnetic Radiation, with a receiver element for electromagnetic Radiation with which according to the on it radiated an electrical Measurement signal can be generated, the arrangement of the Sender element and the receiver element with the Provided that radiated from the transmitter element electromagnetic radiation on an in a coin placed in a test position and that at least part of one emitted by the coin Reflection radiation from the incident electromagnetic Radiates radiation onto the receiver element, and with one with the receiver element connected electronic evaluation unit, by means of which according to a comparison of that of the receiver element generated and possibly processed electronically electrical measurement signal with a predetermined Comparison signal alternatively a "false" control signal or a "real" control signal can be generated.
the area of visible light, near UV light and near and far IR light can be used.
the radiation enters Interaction with the solid.
Irradiation angle and the dielectric properties of the solid is at least a part, in In the case of total reflection, practically the whole radiated power reflected, the degree of reflection also from the angle of the irradiation to Surface normal of the solid depends. To do this in addition to basic physical publications referred for reflection.
a device of the above construction is known from the literature DE 195 07 482 A1.
the device known in this respect becomes visible Light shone onto a surface of a coin and that reflected light with a lens optical system figuratively as an electrical signal or as a data set detected.
the electrical signal corresponding to an image or its data record is marked with a Reference data record compared and so a comparison between a "target image” and an "actual image”.
a "false” signal is generated generated.
the invention is the technical problem based on a device for coin recognition create which is simpler but with high reliability works.
On Wavelength selective measurement signal can in the receiver element in the way of wavelength selective radiation from the transmitter element and / or the wavelength selective Detection takes place in the receiver unit.
On Wavelength-selective measurement signal can be on the detection side preserved in various ways become.
the receiver element can have wavelength-selective sensor or with a a wavelength selective filter upstream of a sensor be equipped. Then the transmitter unit needs not to work wavelength selective. It is also possible, a wavelength selective emitted by the transmitter element electromagnetic radiation too modulate and not by demodulation in one or only slightly wavelength-selective receiver element or in one of these evaluation units a specific assignment to the radiated to hit electromagnetic radiation.
comparison signal band is a given measurement and Evaluation signal area, in particular a signal intensity area, designated, which is a coin condition "wrong" or “real” is associated with being outside measurement and evaluation signals lying in this signal range assigned to the other coin condition are.
a signal intensity area designated, which is a coin condition "wrong" or "real” is associated with being outside measurement and evaluation signals lying in this signal range assigned to the other coin condition are.
the two limits of the comparison signal band sharp, it can on the borders however, sub-areas can also be provided, which one Coin status "unsafe” are assigned.
the comparison signal band or its borders or border areas can be easily experimented with determine real and false coins.
Sort function corresponding applies to an embodiment with (possibly additional) Sort function.
the invention is based first on the knowledge that on metallic surfaces not always and regardless of wavelength a real total reflection takes place in the sense that the reflectance is exactly 100% is. Rather, there are various absorption processes instead, these absorption processes depending on the wavelength are. For this, on the one hand responsible for the wavelength dependencies of the dielectric constant the hull material, in particular but also the electronic ones Properties of surface layers, such as Oxide layers. The latter influence the reflectivity to a considerable extent wavelength-dependent, and depending on the chemical composition. The Absorption and consequently also the reflection in a The predetermined wavelength is therefore considerably determined from the coin material.
a wavelength-selective measurement signal can be obtained if electromagnetic radiation can be emitted in a wavelength-selective manner with the transmitter element and / or electromagnetic radiation can be recorded in a wavelength-selective manner with the receiver element.
the transmitter element has a luminescent diode.
Luminous diodes are pn semiconductor elements with a material-dependent band gap. The measure of the band gap determines the wavelength of the emitted radiation.
Examples are: GaAs, Si doped: IR; GaP, Zn-, O-doped: red; GaAs 0.6 P 0.4 : red; GaAs 0.35 P 0.65 , N-doped: orange; GaAs 0.15 P 0.85 , N-doped: yellow; GaP, N-doped: green; SiC, Al-, N-doped: blue; GaN, Zn-doped: blue.
the line width is typically approximately 40 nm.
a special embodiment of the invention is characterized in that the transmitter element several has wavelength-selective transmitter units, where the radiation spectra of the transmitter units are not overlapping and that in Receiver element preferably separate, each Measurement signals assignable to a transmitter unit can be generated are.
Non-overlapping means that the wavelengths of the Radiant power maxima are more than half Differentiate line width.
two different colors Types i.e. with different band gaps, if necessary in a structural unit.
the transmitter element is preferably for radiation modulated electromagnetic waves.
Modulated means amplitude-modulated, for example with a rectangular or sinusoidal Envelope.
the modulation frequency can range from 50 Hz to 20 MHz, preferably from 50 Hz to 1 MHz, most preferably from 200 Hz to 20 kHz.
Luminescent diodes can be the different Luminous diodes with different and in the receiver element or the evaluation unit to be provided with discriminatory modulations, for example different modulation frequencies.
Influences of extraneous light or daylight are practical locked out.
the receiver element can be a photoresistor, a pn photodiode, a pin photodiode, an avalanche photodiode or have a phototransistor. At the latter two components are Internal gain detectors. The spectral sensitivity the aforementioned components is opposite the emission spectrum of luminescent diodes, for example relatively wavelength-selective.
the transmitter element and the receiver element are like this aligned that the directions are maximum Radiation intensity as well as maximum sensitivity each identical or different at an angle of 0 - 50 °, preferably 5 - 30 °, most preferably 14 - 16 °, stand normal on a main coin surface.
the latter angular range is particularly recommended in the case of leaded coins and in combination with yellow or orange light.
Coin metals can combine other angular ranges can be attached with other colors and by simple experiments metal-specific or alloy-specific be optimized.
a special embodiment of the invention is characterized in that the transmitter element a Oscillator for modulating the emitted electromagnetic Has radiation, and that the Evaluation unit for an AC voltage amplifier Amplification of the measurement signal, preferably with a filter, a detector for demodulating the measurement signal, preferably a rectifier, and a DC amplifier to reinforce the demodulated Signal and a comparator for comparing the demodulated Signal with a predetermined DC voltage range having.
the specified DC voltage range is coin-specific or alloy-specific and can, for example, by measurements Reference coins can be determined.
the comparator can be used directly as a "false” or "real" control signal be used. It is also possible the comparator signal (usually a binary signal, i.e.
the invention also relates to a method for testing of coins, being electromagnetic with a transmitter element Radiation is irradiated onto a coin the radiated electromagnetic radiation is reflected from the surface of the coin and being the reflected electromagnetic radiation caught with a receiver element and into one electrical measurement signal is converted, the Measurement signal supplied to an evaluation unit and with a predetermined comparison signal is compared, and according to the result of the comparison alternatively, a "false" control signal or a "real” control signal is generated and is characterized by that preferably the radiated electromagnetic Radiation has a line width ⁇ / ⁇ of less than 0.4 and that in the evaluation unit wavelength-selective evaluation signal, preferably in Area of the line width of the irradiated electromagnetic radiation, generated and with wavelength selective Comparison signal bands compared becomes.
the Line width less than 0.2, preferably less than 0.1, most preferably less than 0.07.
FIG. 1 schematically shows an inventive Device for coin recognition.
This Device is usually part of a usual Coin counter or / or coin sorting machine set up his. These machines are well known. For the Understanding of Fig. 1 is only important to know that isolated coins with such machines and driven past facilities by means of transport devices be what coins to recognize in the Location. In the context of such machines are wrong Coins that are not of a given coin type belonging coins sorted out and collected separately.
1 shows a transmitter element 1 for electromagnetic radiation, and a receiver element 2 for electromagnetic radiation, with which according to the irradiated on it Radiation an electrical measurement signal can be generated.
the transmitter element 1 is a luminescent diode, which shines yellow or orange. Hereby can be special good brass or bronze colored coins 4 detect.
the receiver element 2 is a phototransistor.
the Sender element 1 and the receiver element 2 are in the individual aligned so that the directions are maximum Radiation intensity as well as maximum sensitivity each at an angle of 15 ° to the Normals stand on a main coin surface 13.
a with the receiver element 2 connected electronic Evaluation unit 6 is provided, by means of which after Provided a comparison of that of the receiver element 2 generated and processed into an evaluation signal 12 electrical measurement signal with a predetermined comparison signal 7 alternatively a "false" control signal or a "real" control signal can be generated.
a modulated luminescent diode is irradiated, is the measurement and evaluation signal, after demodulation, wavelength selective.
the evaluation unit 6 the control signals according to a comparison of the wavelength-selective evaluation signals 12 with predetermined Wavelength-selective comparison signal bands 7 generated.
the transmitter element 1 has one Oscillator 8 for modulating the emitted electromagnetic Radiation 3.
the evaluation unit 6 comprises an AC amplifier 9 for amplification the measurement signal, preferably with a filter, a detector 10 for demodulating the measurement signal, preferably a rectifier, and a DC amplifier 11 to reinforce the demodulated Signals and one in Fig. 1 of clarity for the sake of comparison, not shown, for comparison of the demodulated evaluation signal 12 with a predetermined one DC voltage range (7).
Output signal of the DC voltage amplifier 11 is not immediately forms the evaluation signal 12. Rather it will this output signal for controlling a comparator used, which in turn a combination 14 one (another and the above detector 10 detector connected in parallel on the input side) and controlled by a sample / hold electronics. The output signal the sample / hold electronics, if necessary after DC voltage amplification, the evaluation signal 15.
FIGS. 2a and 2b are various evaluation signals 12 and specific comparison signal bands for a specific coin type 7 shown.
Fig. 2a shows the Signals for a real mono coin, since that Evaluation signal 12 after "catching" the sample / hold electronics is in the comparison signal band 7.
a downstream one Comparator then produces a "real" control signal.
Checking coin type is a wrong coin or coin mixed with another variety, for example Evaluation signal 7 according to FIG. 2b obtained with the consequence of a "false" control signal.
With the invention Device can also be bicolor coins check as can be seen in Figures 2c and 2d.
FIGS. 2a and 2b apply corresponding. In the embodiment while checking the outer part of the coin switched off.

Landscapes

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

EP00250044A 1999-03-08 2000-02-10 Dispositif de reconnaissance de pièces de monnaie Expired - Lifetime EP1035519B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19909851		1999-03-08
DE19909851A DE19909851C2 (de)	1999-03-08	1999-03-08	Vorrichtung zur Unterscheidung falscher von echten Münzen

Publications (2)

Publication Number	Publication Date
EP1035519A1 true EP1035519A1 (fr)	2000-09-13
EP1035519B1 EP1035519B1 (fr)	2005-08-31

Family

ID=7899907

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP00250044A Expired - Lifetime EP1035519B1 (fr)	1999-03-08	2000-02-10	Dispositif de reconnaissance de pièces de monnaie

Country Status (5)

Country	Link
US (1)	US6417471B1 (fr)
EP (1)	EP1035519B1 (fr)
AT (1)	ATE303637T1 (fr)
AU (1)	AU762905B2 (fr)
DE (2)	DE19909851C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE520847C2 (sv) *	1999-02-10	2003-09-02	Scan Coin Ind Ab	Myntsärskiljande anordning, mynthanteringsapparat inbegripande en sådan anordning samt en metod för särskiljning av mynt
US6736250B2 (en) *	2001-09-28	2004-05-18	Harold E. Mattice	Method and apparatus for fraud detection
DE10222771A1 (de) *	2002-05-16	2003-12-04	Walter Hanke Mech Werkstaetten	Verfahren und optische Meßeinrichtung zum Prüfen von Münzen oder münzähnlichen Gegenständen
DE10300608B4 (de) *	2003-01-10	2004-09-30	National Rejectors, Inc. Gmbh	Verfahren zur Erkennung eines Prägebildes einer Münze in einem Münzautomaten
US20070007723A1 (en) *	2005-02-28	2007-01-11	Aruze Corp.	Gaming machine and coin selection device
DE102009020487A1 (de)	2009-05-08	2010-11-11	Bundesrepublik Deutschland, vertr.d.d. Bundesministerium für Wirtschaft und Technologie, d.vertr.d.d. Präsidenten der Physikalisch-Technischen Bundesanstalt	Vorrichtung und Verfahren zur Erkennung einer Münze
US8661889B2 (en) *	2009-07-16	2014-03-04	Duane C. Blake	AURA devices and methods for increasing rare coin value
DE102012014958A1 (de) *	2012-07-30	2014-02-13	Crane Payment Solutions Gmbh	Münze und Verfahren zum Prüfen der Münze
TWI675353B (zh) *	2018-06-08	2019-10-21	慶餘科技股份有限公司	自動辨識硬幣真偽的系統及其操作方法

Citations (4)

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US3796295A (en) *	1969-03-31	1974-03-12	Fatme Spa	Electronic metal coin analyser
GB1397083A (en) *	1971-05-24	1975-06-11	Mars Inc	Coin selector utilizing inductive sensors
US4333557A (en) *	1980-02-21	1982-06-08	Kozak George M	Solid state slug rejector
EP0336018A2 (fr) *	1988-03-31	1989-10-11	Nippon Conlux Co., Ltd.	Méthode et dispositif de tri de pièces de monnaie

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CH558962A (de) *	1973-06-01	1975-02-14	Landis & Gyr Ag	Vorrichtung zum vergleich der spektralen remission oder transmission eines prueflings und eines standards.
GB2078368B (en) *	1980-06-20	1984-03-14	De La Rue Syst	Sorting objects by colour
FR2515395B1 (fr) *	1981-10-27	1985-05-31	Doucet Joel	Selecteur multipiece de monnaie
US5046841A (en) *	1989-01-19	1991-09-10	Idx, Inc.	Token having a predetermined optical characteristic, and a token validation device for use therewith
JP3130974B2 (ja) *	1991-08-07	2001-01-31	グローリー工業株式会社	硬貨識別装置
CH683463A5 (de) *	1991-12-10	1994-03-15	Ascom Autelca Ag	Verfahren zum Prüfen einer Münze.
CH684222A5 (de) *	1992-03-10	1994-07-29	Mars Inc	Einrichtung zur Klassifizierung eines Musters, insbesondere von einer Banknote oder von einer Münze.
JP3525360B2 (ja) *	1994-05-19	2004-05-10	ローレルバンクマシン株式会社	硬貨判別装置
DE19507482A1 (de) *	1995-03-03	1996-09-05	Herbert Weiss	Verfahren zum Sortieren von Münzen
US6142285A (en) *	1996-05-21	2000-11-07	Digitall Inc	Coin testing apparatus and method

1999
- 1999-03-08 DE DE19909851A patent/DE19909851C2/de not_active Expired - Fee Related
2000
- 2000-02-10 DE DE50011044T patent/DE50011044D1/de not_active Expired - Fee Related
- 2000-02-10 AT AT00250044T patent/ATE303637T1/de not_active IP Right Cessation
- 2000-02-10 EP EP00250044A patent/EP1035519B1/fr not_active Expired - Lifetime
- 2000-02-23 AU AU19423/00A patent/AU762905B2/en not_active Ceased
- 2000-03-07 US US09/520,863 patent/US6417471B1/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3796295A (en) *	1969-03-31	1974-03-12	Fatme Spa	Electronic metal coin analyser
GB1397083A (en) *	1971-05-24	1975-06-11	Mars Inc	Coin selector utilizing inductive sensors
US4333557A (en) *	1980-02-21	1982-06-08	Kozak George M	Solid state slug rejector
EP0336018A2 (fr) *	1988-03-31	1989-10-11	Nippon Conlux Co., Ltd.	Méthode et dispositif de tri de pièces de monnaie

Also Published As

Publication number	Publication date
US6417471B1 (en)	2002-07-09
DE50011044D1 (de)	2005-10-06
DE19909851A1 (de)	2000-09-21
DE19909851C2 (de)	2003-09-04
AU762905B2 (en)	2003-07-10
AU1942300A (en)	2000-09-14
EP1035519B1 (fr)	2005-08-31
ATE303637T1 (de)	2005-09-15

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Publication	Publication Date	Title
DE69418596T2 (de)	2000-01-20	Erfassung von verfälschten objekten
DE60112890T2 (de)	2006-02-16	Verfahren zur überwachung von dokumenten
DE3784142T2 (de)	1993-06-03	Pruefung eines artikels.
DE69910550T2 (de)	2004-04-01	Verfahren und vorrichtung zur überwachung von artikeln
DE2858266C2 (de)	1991-08-29	Wertzeichen wie Kredit- oder Ausweiskarte
DE69528153T2 (de)	2003-06-05	Prüfung von nachgemachten objekten, zum beispiel von nachgemachten geldscheinen
EP1245007A1 (fr)	2002-10-02	Procede et dispositif pour verifier l'authenticite de billets de banque
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