EP0889447A2 - Détecteur optique pour ensembles d'examen de pièces de monnaie - Google Patents

Détecteur optique pour ensembles d'examen de pièces de monnaie Download PDF

Info

Publication number: EP0889447A2
Authority: EP; European Patent Office
Prior art keywords: optical; optical sensor; electronic switch; sensor according; electronic
Prior art date: 1997-07-03
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

EP98108480A

Other languages

German (de)

English (en)

Other versions

EP0889447A3 (fr

EP0889447B1 (fr

Inventor

Ulrich Cohrs

Wilfried Meyer

Gerhard Schlichting

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.)

1997-07-03

Filing date

1998-05-09

Publication date

1999-01-07

1998-05-09 Application filed by National Rejectors Inc GmbH filed Critical National Rejectors Inc GmbH

1999-01-07 Publication of EP0889447A2 publication Critical patent/EP0889447A2/fr

1999-10-13 Publication of EP0889447A3 publication Critical patent/EP0889447A3/fr

2003-06-18 Application granted granted Critical

2003-06-18 Publication of EP0889447B1 publication Critical patent/EP0889447B1/fr

2018-05-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000003287 optical effect Effects 0.000 title claims abstract description 42
230000000712 assembly Effects 0.000 title 1
238000000429 assembly Methods 0.000 title 1
230000000630 rising effect Effects 0.000 claims abstract description 6
239000003990 capacitor Substances 0.000 claims description 10
230000005540 biological transmission Effects 0.000 claims description 4
238000004146 energy storage Methods 0.000 abstract description 5
238000005265 energy consumption Methods 0.000 description 2
230000004888 barrier function Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
239000004065 semiconductor Substances 0.000 description 1
230000001960 triggered effect Effects 0.000 description 1
238000010200 validation analysis Methods 0.000 description 1

Images

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

Definitions

the invention relates to an optical sensor in coin testing arrangements according to the preamble of claim 1.
Coin validation arrangements several sensors are required that detect the presence report a coin, for example when entering a channel leading to the checkout e.g. B. to generate a so-called. Cashier signal.
Accepting multiple coins Coin testers are also controlled by so-called sorting flaps by presence sensors. It is also known to fill the level in so-called coin tubes in money changers monitor with sensors. It is also known to have such presence sensors run as optical sensors. This is usually a light source and a photoelectric receiver is provided, the output signal of the photoelectric Depends on the presence of a coin in the light path.
the optical transmitter is usually a light-emitting diode (LED) educated.
a light-sensitive semiconductor is usually used as the optical receiver, for example a photosensitive transistor.
the invention has for its object an optical sensor for coin testing arrangements to create that reduces energy consumption and safer against Incident light is.
At least two are optical Transmitter operated in pulses via a corresponding electronic switch, by going to an energy storage device at intervals via an electronic switch be connected.
the energy store is preferably a capacitor that between the control pulses for the electronic switch or the optical Transmitter generated flash pulses is charged.
the control of the electronic Switch is made by a microprocessor, which is already in such Coin checking arrangements is provided. This also takes over the query of the optical Receiver, and expediently such that the processor the query circuit controls so that it only during the transmission pulse or during a Time when the optical transmitter emits its flash is sensitive.
the pulsed operation of the optical transmitters saves a lot of energy, so that the sensor according to the invention, in particular in the case of battery-operated machines Coin checking arrangements is of great advantage. By removing only during the The operating time of the optical transmitters is largely eliminated.
the optical sensor according to the invention therefore offers high operational reliability.
optical transmitters can be connected in series, which are then the same Generate a light pulse by either one or more photosensitive receivers is received.
optical transmitters with assigned electronic switch and energy storage arranged such that the one electronic switch with the rising and the other is operated with the falling edge of a control pulse.
This arrangement has the advantage that only one control line for at least two optical Transmitter is required.
Control lines of a processor tend to use them as sparingly as possible. This is achieved with the invention.
Two photosensitive diodes 10, 12 in Fig. 1 are in series with a capacitor 14 and 16.
the capacitors 14, 16 are connected via a resistor 18 or 20 on a common current source 22.
a transistor 24 or 26 switched in parallel with the diodes 10, 12 in parallel with the diodes 10, 12 in parallel with a transistor 24 or 26 switched.
a resistor 28 is connected in parallel with the diode 10 and in parallel a diode 30 connected in the opposite direction to the diode 12.
the base of transistor 24 is through a resistor 32 to an output line of a processor (not shown) connected, which periodically emits control pulses at intervals.
Such a control pulse is shown in Fig. 3a and designated 34.
the duration of the pulses 34 is e.g. a few microseconds and their distance e.g. 20 to 30 microseconds.
the pulse 34 has a rising edge 36 and a falling edge Flank 38.
both transistors 24, 26 are blocked. Appears a Pulse 34, transistor 24 turns on, causing the previously charged capacitor 14 can discharge and generate a short current pulse in the diode 10, whereby a light pulse is emitted. With the falling edge 38 blocks Transistor 24, and capacitor 14 is recharged. The base current opens the transistor 26 and now enables the discharge of the capacitor 16, which in addition leads that the light-emitting diode 12 now emits a light pulse.
the receiver circuit is shown. It comprises two parallel ones photosensitive transistors 40, 42.
the operation of the circuit is like follows. In the idle state, a transistor 44 should be conductive. His collector is over one Resistor 46 connected to a current source 22. Its base is over one Resistor 48 also on this current source.
the collector of a transistor 50 whose base is connected to the collector of transistor 44 is due to described operating mode on supply voltage.
the collector of the transistor 50 is through a capacitor 52 with a point between the base of the transistor 44 and the resistor 48 connected. Has the voltage across capacitor 52 Supply voltage level minus the voltage drop on the base emitter path of transistor 50.
FIG. 3b shows in FIG. 3b which pulses at the output 54 of the circuit arrangement 2 occur when the distance between the diodes 12 and 10 or 42 and 40 is not covered by a coin or the like. It's easy to see that a first pulse 56 by the rising edge 36 and a second Pulse was triggered by the falling edge 58.
the processor can thus determine whether at the time of pulse 36, 38 (rising and falling edge), a pulse on the Receiver side is generated. Is this e.g. for the one receiving transistor 40 or 42 not the case, for example by covering the diode 10, only a pulse 58a is generated (Fig. 3c). However, if diode 12 is covered, a pulse 56b is generated (Fig. 3d).

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Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Testing Of Coins (AREA)
Geophysics And Detection Of Objects (AREA)
Electronic Switches (AREA)
Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Inspection Of Paper Currency And Valuable Securities (AREA)

EP98108480A 1997-07-03 1998-05-09 Détecteur optique pour ensembles d'examen de pièces de monnaie Expired - Lifetime EP0889447B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE29711694U		1997-07-03
DE29711694U DE29711694U1 (de)	1997-07-03	1997-07-03	Optischer Sensor in Münzprüfanordnungen

Publications (3)

Publication Number	Publication Date
EP0889447A2 true EP0889447A2 (fr)	1999-01-07
EP0889447A3 EP0889447A3 (fr)	1999-10-13
EP0889447B1 EP0889447B1 (fr)	2003-06-18

Family

ID=8042573

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP98108480A Expired - Lifetime EP0889447B1 (fr)	1997-07-03	1998-05-09	Détecteur optique pour ensembles d'examen de pièces de monnaie

Country Status (3)

Country	Link
EP (1)	EP0889447B1 (fr)
DE (2)	DE29711694U1 (fr)
ES (1)	ES2198616T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6314827B1 (en)	1997-09-01	2001-11-13	Kanzaki Kokyukoki Mfg. Co., Ltd.	Transmission for a working vehicle
BE1016016A3 (fr) *	2003-03-14	2006-01-10	Int Currency Tech	Circuit de commande d'energie a utiliser dans un distributeur automatique.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ES2387027B1 (es) *	2011-02-15	2013-06-24	Ojmar, S.A.	Cerradura con deteccion optica de moneda.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2055134A1 (de) *	1970-11-10	1972-05-18	Pruemm G	Elektronischer Münzprüfer
DE3416045A1 (de) *	1984-04-30	1985-10-31	Siemens AG, 1000 Berlin und 8000 München	Verfahren zur erkennung von muenzen bei selbstverkaeufern
DE4301530C1 (de) *	1993-01-21	1994-06-30	Nat Rejectors Gmbh	Induktiver Einschaltsensor für batteriebetriebene Münzprüfer
US5673781A (en) *	1995-11-21	1997-10-07	Coin Acceptors, Inc.	Coin detection device and associated method

1997
- 1997-07-03 DE DE29711694U patent/DE29711694U1/de not_active Expired - Lifetime
1998
- 1998-05-09 ES ES98108480T patent/ES2198616T3/es not_active Expired - Lifetime
- 1998-05-09 DE DE59808736T patent/DE59808736D1/de not_active Expired - Lifetime
- 1998-05-09 EP EP98108480A patent/EP0889447B1/fr not_active Expired - Lifetime

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6314827B1 (en)	1997-09-01	2001-11-13	Kanzaki Kokyukoki Mfg. Co., Ltd.	Transmission for a working vehicle
BE1016016A3 (fr) *	2003-03-14	2006-01-10	Int Currency Tech	Circuit de commande d'energie a utiliser dans un distributeur automatique.

Also Published As

Publication number	Publication date
EP0889447A3 (fr)	1999-10-13
EP0889447B1 (fr)	2003-06-18
DE59808736D1 (de)	2003-07-24
DE29711694U1 (de)	1997-09-18
ES2198616T3 (es)	2004-02-01

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EP0889447A2 - Détecteur optique pour ensembles d'examen de pièces de monnaie - Google Patents

Info

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Images

Classifications

Definitions

Landscapes

Applications Claiming Priority (2)

Publications (3)

Family

ID=8042573

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (1)

Family Cites Families (4)

Cited By (2)

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