EP0694888B1 - Einrichtung zur Prüfung von Münzen oder flachen Gegenständen - Google Patents
Einrichtung zur Prüfung von Münzen oder flachen Gegenständen Download PDFInfo
- Publication number
- EP0694888B1 EP0694888B1 EP94111909A EP94111909A EP0694888B1 EP 0694888 B1 EP0694888 B1 EP 0694888B1 EP 94111909 A EP94111909 A EP 94111909A EP 94111909 A EP94111909 A EP 94111909A EP 0694888 B1 EP0694888 B1 EP 0694888B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coin
- time
- acceleration
- light barrier
- masking
- 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.)
- Revoked
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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
- G07D5/02—Testing the dimensions, e.g. thickness, diameter; Testing the deformation
Definitions
- the invention relates to a device for checking the authenticity of coins or other flat objects of the type mentioned in the preamble of claim 1.
- Such coin validators are suitable, for example, for the identification of coins in telephone sets, vending machines, counters for measuring energy, etc.
- a coin validator of the type mentioned in the preamble of claim 1 is known from US 4,509,633.
- the chord length of a coin is determined by means of two light barriers by an average speed of the time periods during which the coin passes the first and the second light barrier
- the coin is determined and an approximate value for the chord length of the coin is calculated using this average speed and the length of time during which the coin covers both light barriers. This approximation depends on the initial speed of the coin as well as the acceleration of the coin.
- a coin validator is known from US Pat. No. 4,474,281, in which the coin falls through two light barriers in free fall.
- the distance in front of the light barriers must be at least 2.54 cm (1 inch), otherwise correction factors would have to be introduced to minimize the influence of the acceleration.
- a coin validator is known from CA 1 206 618, in which at least three light barriers are provided for measuring the chord length of the coin.
- an acceleration factor is provided which is a function of the measured time intervals. If the inclination of the coin channel changes, this factor must be redetermined experimentally.
- Another coin validator is known from FR 1'605'182.
- Two light barriers are provided along a coin channel, the time span that a coin needs to get from the first light barrier to the second light barrier and the time span during which the coin covers the second light barrier are compared with predetermined reference values. Such a measurement implicitly represents a determination of a chord length of the coin.
- a pawl which can be actuated by a relay is necessary, which stops the inserted coin and then releases the coin channel for the coin.
- a coin validator in which there is a pawl for opening the coin channel, a magnet braking the coin depending on its specific properties and two light barriers for determining the speed of the coin after passing the magnet. Taking into account the acceleration of the coin on the way from the first to the second light barrier is not provided. To further increase the reliability of the coin detection, two further light barriers are provided in front of the brake magnet, with which the speed of the coin can be determined before it enters the magnetic field of the magnet.
- EP 119,936 A1 discloses a coin validator for determining the diameter of a coin by means of two light barriers. The coin rolls along a coin channel and is subject to constant acceleration. An average speed is calculated from the time periods during which the coin covers the two light barriers and is used to correct the influence of the acceleration on the determination of the diameter.
- the invention is based on the object of proposing a coin validator in which the chord length of a coin to be tested can be determined in a simple and precise manner regardless of initial conditions.
- the device has a coin channel K, two light barriers L1 and L2 and electronic means E for detecting and evaluating the electrical signals emitted by the light barriers L1 and L2.
- the coin channel K is designed and provided with energy-absorbing elements in such a way that a jumping or jumping of the coin M between the two light barriers L1 and L2 is normally impossible.
- the coin channel K is designed as an inclined plane SE, which is inclined by the angle ⁇ with respect to the horizontal H.
- the coin M On the inclined plane SE between the two light barriers L1 and L2, the coin M now moves down with constant acceleration, which arises as a result of the gravitational force and frictional forces.
- the movement can be rolling without sliding, sliding without rolling, or a combination of rolling and sliding.
- the light barriers L1 and L2 are arranged above the inclined plane SE at a predetermined, identical height h and at a mutually predetermined distance L.
- the distance traveled by the coin M on the level SE at time t is designated by the coordinate x (t).
- the coin M has a mass m, a radius R and an moment of inertia I.
- the moment of inertia I is related to the axis of rotation leading through the center of gravity of the coin M.
- I 1 ⁇ 2mR 2 applies to a homogeneous coin.
- the length of the chord of the coin M running parallel to the inclined plane SE at the height h is denoted by B.
- the center of gravity of the coin M moves with the speed v (t).
- the rotation of the coin M around its center of gravity takes place with the angular velocity ⁇ (t).
- the energy E of the coin M is composed of potential energy E pot , kinetic energy E kin of the center of gravity and rotational energy E rot with respect to its center of gravity:
- the formula (9) for determining the chord length B of the coin M contains no terms which depend on its initial speed v 0 , its initial angular speed ⁇ 0 or on any physical constants.
- the times t 1 , t 2 and t 3 thus actually correspond to time differences.
- the acceleration of the coin M can also be calculated from the times t 1 , t 2 and t 3 .
- chord length B can still be determined from the times t 1 , t 2 and t 3 using the formula (9).
- the formula (9) for determining the chord length B is also valid for the case that the coin M rolls and slides, provided that the acceleration a of its center of gravity is approximately constant from time t 0 to time t 3 , that is on the route between the two light barriers L1 and L2.
- the times t 0 , t 1 , t 2 and t 3 can be measured with methods known per se with high accuracy.
- the signals emitted by the light barriers L1 and L2 are fed on separate lines to two inputs of a microprocessor, so that the distance L between the two light barriers L1 and L2 can be set as desired.
- the distance L is chosen to be larger than the chord B of the largest coin to be measured. Then the two light barriers L1 and L2 are never covered at the same time, so that the output signals of both light barriers L1 and L2 can be fed to a common input of the microprocessor.
- the microprocessor receives two pulses one after the other in both versions.
- the other three edges of the two pulses then determine the three times t 1 , t 2 and t 3 .
- the microprocessor uses the formula (9), the microprocessor then calculates the chord length B of the coin M, which serves as at least one decision criterion for accepting or rejecting the coin M.
- the specified formulas can of course be transformed or, if necessary, even replaced by an approximate formula, so that rounding errors can be avoided as far as possible when performing the calculation using a microprocessor.
- the advantage of the device described can be seen in the fact that neither the initial speed v 0 nor the initial angular speed go into the effective acceleration a of the coin M on its way from the first to the second light barrier in determining the chord length B.
- a stop device which can be actuated by means of a magnet, for example, in the coin channel in front of the first light barrier L1 is not required.
- the chord length B of a coin M is of the formula (9) with a Accuracy can be determined, which is in the alcohol range.
- the proposed coin validator is therefore particularly suitable for use in a device that is supposed to accept coins of different sizes and different currencies.
- the moment of inertia I of the coin M depends on the type and number of alloys from which the coin M is formed. If the coin M consists of several alloys, the moment of inertia I also depends on the geometric arrangement of the different alloys within the coin M. The ratio of the moment of inertia to the mass I / m is therefore another variable that characterizes the coin M. If the coin M rolls in the coin channel without sliding, the ratio I / m can be used as a decision criterion for accepting or rejecting the coin M, which makes it unnecessary to install an inductive sensor for determining the alloy composition in the coin validator.
- the device can also have other sensors for measuring other properties such as the thickness of the coins to be checked, which then also serve as a decision criterion for the acceptance or rejection of the coin M.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Coins (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Labeling Devices (AREA)
- Adornments (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Radar Systems Or Details Thereof (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59400864T DE59400864D1 (de) | 1994-07-29 | 1994-07-29 | Einrichtung zur Prüfung von Münzen oder flachen Gegenständen |
ES94111909T ES2093478T3 (es) | 1994-07-29 | 1994-07-29 | Dispositivo para examinar monedas u objetos planos. |
AT94111909T ATE144335T1 (de) | 1994-07-29 | 1994-07-29 | Einrichtung zur prüfung von münzen oder flachen gegenständen |
DK94111909.1T DK0694888T3 (da) | 1994-07-29 | 1994-07-29 | Indretning til kontrol af mønter eller flade genstande |
EP94111909A EP0694888B1 (de) | 1994-07-29 | 1994-07-29 | Einrichtung zur Prüfung von Münzen oder flachen Gegenständen |
TW083107903A TW262551B (en) | 1994-07-29 | 1994-08-29 | Device for the testing of coins or flat articles |
LT95-067A LT4004B (en) | 1994-07-29 | 1995-06-13 | Method for the testing of coins or flat articles |
CN95109938.8A CN1120709A (zh) | 1994-07-29 | 1995-07-07 | 检测硬币,代币或扁平体的装置 |
PL95309771A PL309771A1 (en) | 1994-07-29 | 1995-07-26 | Apparatus for inspecting coins and other flat objects |
EE9500038A EE03009B1 (et) | 1994-07-29 | 1995-07-27 | Müntide ja teiste lamedate esemete kontrollseade ehk tester |
SK948-95A SK94895A3 (en) | 1994-07-29 | 1995-07-27 | Device for testing of coins or flat objects |
FI953625A FI953625A (fi) | 1994-07-29 | 1995-07-28 | Laite kolikoiden tai litteiden esineiden testaamiseksi |
NO953004A NO953004L (no) | 1994-07-29 | 1995-07-28 | Innretning til undersökelse av mynter eller flate gjenstander |
BR9503487A BR9503487A (pt) | 1994-07-29 | 1995-07-28 | Instalação para o exame de moedas ou objetos planos |
GR960402915T GR3021541T3 (en) | 1994-07-29 | 1996-11-06 | Device for testing coins or other flat objects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94111909A EP0694888B1 (de) | 1994-07-29 | 1994-07-29 | Einrichtung zur Prüfung von Münzen oder flachen Gegenständen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0694888A1 EP0694888A1 (de) | 1996-01-31 |
EP0694888B1 true EP0694888B1 (de) | 1996-10-16 |
Family
ID=8216160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94111909A Revoked EP0694888B1 (de) | 1994-07-29 | 1994-07-29 | Einrichtung zur Prüfung von Münzen oder flachen Gegenständen |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP0694888B1 (et) |
CN (1) | CN1120709A (et) |
AT (1) | ATE144335T1 (et) |
BR (1) | BR9503487A (et) |
DE (1) | DE59400864D1 (et) |
DK (1) | DK0694888T3 (et) |
EE (1) | EE03009B1 (et) |
ES (1) | ES2093478T3 (et) |
FI (1) | FI953625A (et) |
GR (1) | GR3021541T3 (et) |
LT (1) | LT4004B (et) |
NO (1) | NO953004L (et) |
PL (1) | PL309771A1 (et) |
SK (1) | SK94895A3 (et) |
TW (1) | TW262551B (et) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH690801A5 (de) * | 1996-07-11 | 2001-01-15 | Ip Tpg Holdco Sarl | Einrichtung zur Prüfung der Echtheit von Münzen, Jetons oder anderen flachen metallischen Gegenständen. |
ES2127150B1 (es) * | 1997-07-29 | 1999-11-16 | Azkoyen Ind Sa | Metodo para la identificacion de piezas metalicas discoidales con un orificio central. |
ES2380484B1 (es) * | 2002-08-22 | 2013-04-01 | Azkoyen , S.A. | Dispositivo y metodo selector de monedas |
DE102008059310A1 (de) * | 2008-11-27 | 2010-06-02 | National Rejectors, Inc. Gmbh | Verfahren und Vorrichtung zur Bestimmung des Durchmessers von Münzen in einem Freifallmünzgerät |
DE102012014958A1 (de) | 2012-07-30 | 2014-02-13 | Crane Payment Solutions Gmbh | Münze und Verfahren zum Prüfen der Münze |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1246622A (en) | 1967-07-17 | 1971-09-15 | Mars Inc | Coin or token testing system |
DE2015058C2 (de) | 1969-04-01 | 1983-12-08 | Mars Inc., Washington, D.C. | Vorrichtung zur Prüfung von Münzen |
US4474281A (en) * | 1982-06-07 | 1984-10-02 | General Signal Corporation | Apparatus and method for coin diameter computation |
FR2541019B1 (fr) | 1983-02-10 | 1986-07-18 | Mecelec Sa | Procede optique pour determiner les dimensions d'un objet en mouvement relatif, et plus particulierement d'une piece de monnaie dans un appareil a pre-paiement, et dispositif pour sa mise en oeuvre |
CA1206618A (en) * | 1983-02-25 | 1986-06-24 | J. Randall Macdonald | Electronic coin measurement apparatus |
US4509633A (en) * | 1983-08-24 | 1985-04-09 | Reed Industries, Inc. | Electronic coin validator with improved diameter sensing apparatus |
US4646904A (en) * | 1985-09-05 | 1987-03-03 | Coin Acceptors, Inc. | Coin sizing means and method |
IT1243886B (it) | 1990-11-02 | 1994-06-28 | Marconi Italiana Automazione E | Metodo ed apparecchiatura per l'identificazione di monete. |
-
1994
- 1994-07-29 AT AT94111909T patent/ATE144335T1/de not_active IP Right Cessation
- 1994-07-29 DE DE59400864T patent/DE59400864D1/de not_active Revoked
- 1994-07-29 ES ES94111909T patent/ES2093478T3/es not_active Expired - Lifetime
- 1994-07-29 DK DK94111909.1T patent/DK0694888T3/da active
- 1994-07-29 EP EP94111909A patent/EP0694888B1/de not_active Revoked
- 1994-08-29 TW TW083107903A patent/TW262551B/zh active
-
1995
- 1995-06-13 LT LT95-067A patent/LT4004B/lt not_active IP Right Cessation
- 1995-07-07 CN CN95109938.8A patent/CN1120709A/zh active Pending
- 1995-07-26 PL PL95309771A patent/PL309771A1/xx unknown
- 1995-07-27 SK SK948-95A patent/SK94895A3/sk unknown
- 1995-07-27 EE EE9500038A patent/EE03009B1/et unknown
- 1995-07-28 BR BR9503487A patent/BR9503487A/pt not_active Application Discontinuation
- 1995-07-28 FI FI953625A patent/FI953625A/fi unknown
- 1995-07-28 NO NO953004A patent/NO953004L/no unknown
-
1996
- 1996-11-06 GR GR960402915T patent/GR3021541T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
LT4004B (en) | 1996-07-25 |
FI953625A (fi) | 1996-01-30 |
ES2093478T3 (es) | 1996-12-16 |
DK0694888T3 (da) | 1997-03-24 |
NO953004L (no) | 1996-01-30 |
BR9503487A (pt) | 1996-06-04 |
EP0694888A1 (de) | 1996-01-31 |
LT95067A (en) | 1996-04-25 |
FI953625A0 (fi) | 1995-07-28 |
NO953004D0 (no) | 1995-07-28 |
PL309771A1 (en) | 1996-02-05 |
EE03009B1 (et) | 1997-06-16 |
SK94895A3 (en) | 1996-02-07 |
DE59400864D1 (de) | 1996-11-21 |
ATE144335T1 (de) | 1996-11-15 |
TW262551B (en) | 1995-11-11 |
CN1120709A (zh) | 1996-04-17 |
GR3021541T3 (en) | 1997-02-28 |
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