EP0694888B1 - Einrichtung zur Prüfung von Münzen oder flachen Gegenständen - Google Patents

Einrichtung zur Prüfung von Münzen oder flachen Gegenständen Download PDF

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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
Application number
EP94111909A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0694888A1 (de
Inventor
Manuel Vasconcelos
Yves Weilenmann
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.)
Electrowatt Technology Innovation AG
Original Assignee
Landis and Gyr Technology Innovation AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8216160&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0694888(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Landis and Gyr Technology Innovation AG filed Critical Landis and Gyr Technology Innovation AG
Priority to EP94111909A priority Critical patent/EP0694888B1/de
Priority to AT94111909T priority patent/ATE144335T1/de
Priority to DK94111909.1T priority patent/DK0694888T3/da
Priority to ES94111909T priority patent/ES2093478T3/es
Priority to DE59400864T priority patent/DE59400864D1/de
Priority to TW083107903A priority patent/TW262551B/zh
Priority to LT95-067A priority patent/LT4004B/lt
Priority to CN95109938.8A priority patent/CN1120709A/zh
Priority to PL95309771A priority patent/PL309771A1/xx
Priority to SK948-95A priority patent/SK94895A3/sk
Priority to EE9500038A priority patent/EE03009B1/xx
Priority to BR9503487A priority patent/BR9503487A/pt
Priority to FI953625A priority patent/FI953625A/fi
Priority to NO953004A priority patent/NO953004L/no
Publication of EP0694888A1 publication Critical patent/EP0694888A1/de
Publication of EP0694888B1 publication Critical patent/EP0694888B1/de
Application granted granted Critical
Priority to GR960402915T priority patent/GR3021541T3/el
Anticipated expiration legal-status Critical
Revoked 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
    • G07D5/02—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)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Adornments (AREA)
  • Labeling Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)
EP94111909A 1994-07-29 1994-07-29 Einrichtung zur Prüfung von Münzen oder flachen Gegenständen Revoked EP0694888B1 (de)

Priority Applications (15)

Application Number Priority Date Filing Date Title
EP94111909A EP0694888B1 (de) 1994-07-29 1994-07-29 Einrichtung zur Prüfung von Münzen oder flachen Gegenständen
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
ES94111909T ES2093478T3 (es) 1994-07-29 1994-07-29 Dispositivo para examinar monedas u objetos planos.
DE59400864T DE59400864D1 (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
SK948-95A SK94895A3 (en) 1994-07-29 1995-07-27 Device for testing of coins or flat objects
EE9500038A EE03009B1 (et) 1994-07-29 1995-07-27 Müntide ja teiste lamedate esemete kontrollseade ehk tester
BR9503487A BR9503487A (pt) 1994-07-29 1995-07-28 Instalação para o exame de moedas ou objetos planos
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
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 (es)
CN (1) CN1120709A (es)
AT (1) ATE144335T1 (es)
BR (1) BR9503487A (es)
DE (1) DE59400864D1 (es)
DK (1) DK0694888T3 (es)
EE (1) EE03009B1 (es)
ES (1) ES2093478T3 (es)
FI (1) FI953625A (es)
GR (1) GR3021541T3 (es)
LT (1) LT4004B (es)
NO (1) NO953004L (es)
PL (1) PL309771A1 (es)
SK (1) SK94895A3 (es)
TW (1) TW262551B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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.

Also Published As

Publication number Publication date
DE59400864D1 (de) 1996-11-21
ATE144335T1 (de) 1996-11-15
NO953004D0 (no) 1995-07-28
PL309771A1 (en) 1996-02-05
GR3021541T3 (en) 1997-02-28
FI953625A0 (fi) 1995-07-28
TW262551B (en) 1995-11-11
LT4004B (en) 1996-07-25
FI953625A (fi) 1996-01-30
EE03009B1 (et) 1997-06-16
EP0694888A1 (de) 1996-01-31
ES2093478T3 (es) 1996-12-16
BR9503487A (pt) 1996-06-04
NO953004L (no) 1996-01-30
SK94895A3 (en) 1996-02-07
CN1120709A (zh) 1996-04-17
LT95067A (en) 1996-04-25
DK0694888T3 (da) 1997-03-24

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