NO830911L - PROCEDURE FOR CLASSIFYING COINS ACCORDING TO THEIR MECHANICAL ELASTICITY - Google Patents
PROCEDURE FOR CLASSIFYING COINS ACCORDING TO THEIR MECHANICAL ELASTICITYInfo
- Publication number
- NO830911L NO830911L NO830911A NO830911A NO830911L NO 830911 L NO830911 L NO 830911L NO 830911 A NO830911 A NO 830911A NO 830911 A NO830911 A NO 830911A NO 830911 L NO830911 L NO 830911L
- Authority
- NO
- Norway
- Prior art keywords
- coin
- amplitude
- elasticity
- mechanical elasticity
- procedure
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 230000010355 oscillation Effects 0.000 claims abstract description 9
- 238000013016 damping Methods 0.000 claims description 3
- 239000010956 nickel silver Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000010358 mechanical oscillation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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
- G07D5/06—Testing the hardness or elasticity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Coins (AREA)
Abstract
remgangsmåte for å sortere gangbar mynt fra ikke-gangbar mynt ved å. bestemme den mekaniske elastisiteten i mynten. Dette blir utført ved å la mynten (1) falle i en vel-definert avstand (h) på en bjelke (2) som blir brakt til svingning. Via en gaffel (4) blir svingningene overført til et piezoelektrisk element (5), hvis elektriske signal blir forsterket, idet det forsterkede signals nivå blir bestemt (10).En blymynt gir en mindre signalamplitude enn en nyslvmynt av samme. diameter gjør.belt walking method of sorting valid coin from non-virtual coin by determining the mechanical elasticity of the coin. This is done by letting the coin (1) fall a well-defined distance (h) onto a beam (2) which is set to oscillate. Via a fork (4), the oscillations are transferred to a piezoelectric element (5), whose electrical signal is amplified, the level of the amplified signal being determined (10). A lead coin gives a smaller signal amplitude than a new silver coin of the same type. diameter does.
Description
Oppfinnelsen angår en fremgangsmåte for å klassifisere mynter i henhold til deres mekaniske elastisitet. • The invention relates to a method for classifying coins according to their mechanical elasticity. •
Ved myntsorteringsanlegg, spesielt ved anordninger hvor mynter blir benyttet som betalingsmiddel og hvor det er viktig å kunne frasortere ikke-gangbare eller forfalskede mynter underkastes hver mynt et antall prøver med hensyn til toleranser. I alminnelighet benyttes avprøvning av diameter og tykkelse samt vekt, men det kan imidlertid i visse tilfeller være mulig å forfalske mynter ved å la billige metallskiver ha samme egenskaper. Av denne grunn blir myntenes ledningsevne tilsvarende kontrollert ved å la mynten passere gjennom et bremsende magnetfelt, idet en godt ledende mynt blir bremset mer enn en dårlig ledende. Imidlertid kan det være tilfeller hvor en blyskive kan simu-lere en mynt av nysølv hvorved et ikke oppnåes vrakning i disse tilfeller. At coin sorting facilities, especially at devices where coins are used as a means of payment and where it is important to be able to sort out unusable or counterfeit coins, each coin is subjected to a number of tests with regard to tolerances. In general, testing of diameter and thickness as well as weight is used, but it may, however, in certain cases be possible to counterfeit coins by allowing cheap metal disks to have the same properties. For this reason, the conductivity of the coins is correspondingly controlled by allowing the coin to pass through a braking magnetic field, a well-conducting coin being slowed down more than a poorly-conducting one. However, there may be cases where a lead disk can simulate a coin of new silver, whereby a wreck is not achieved in these cases.
Det er blitt forsøkt å gjøre bruk av svingninger oppståttAttempts have been made to make use of the resulting oscillations
i en mynt etter at den har falt mot en hard overflate, idet slike svingninger er avhengig av myntens materiale. For dette formål beskriver US-patent nr. 2.317.351 og 4.096.933 at et mikrofon er anordnet tilliggende den harde overflaten for å ta opp lyden til mynten som har falt og som er i midt-luften. Der er imidlertid et krav for en viss lydisolasjon og de forskjellige kretsene for detektering av selvsving-ningens frekvens er heller kompliserte. in a coin after it has fallen against a hard surface, as such fluctuations depend on the coin's material. For this purpose, US Patent Nos. 2,317,351 and 4,096,933 disclose that a microphone is arranged adjacent the hard surface to pick up the sound of the coin that has fallen and is in mid-air. However, there is a requirement for a certain sound insulation and the various circuits for detecting the self-oscillation frequency are rather complicated.
Det er et formål med foreliggende oppfinnelse å unngå ulempen med tidligere kjente myntsorteringsanordninger og som benyt-ter andre fysikalske egenskaper som adskiller myntmaterialer, i dette tilfellet mekanisk elastisitet og indre dempning. Dette blir tilveiebrakt ved en fremgangsmåte ifølge foreliggende oppfinnelse hvor en mynt lar seg falle en vel-definert avstand på et prismatisk legeme, idet amplituden til svingningen oppstått derved blir dektert og en amplitude som overskrider en definert grense klassifiserer mynten til å ha en første elastisitet og en amplitude under grensen som klassifiserer mynten til å ha en andre elastisitet. It is an aim of the present invention to avoid the disadvantage of previously known coin sorting devices and which use other physical properties that separate coin materials, in this case mechanical elasticity and internal damping. This is provided by a method according to the present invention where a coin is allowed to fall a well-defined distance on a prismatic body, the amplitude of the oscillation caused thereby being detected and an amplitude that exceeds a defined limit classifies the coin as having a first elasticity and an amplitude below the limit that classifies the coin as having a second elasticity.
Krav 2 angir materialet-for prismelegemet for å forenkle amplitudedetekteringen. Claim 2 specifies the material for the prism body to simplify the amplitude detection.
Oppfinnelsen skal nå beskrives nærmere med henvisning til tegningen som skjematisk viser prosedyren ved praktisk bruk. The invention will now be described in more detail with reference to the drawing which schematically shows the procedure in practical use.
På tegningen er vist hvorledes den mekaniske elastisiteten kan bli detektert. En mynt 1 faller i en vel-definert avstand h under påvirkning av tyngdekraften.og treffer et prismelegeme .som er understøttet av en ribbe 3. Avhengig av prismelegemets 2 masse kan ribben 3 være elastisk eller hard og dens lengde kan bli variert. Prismelegemets 2 masse kan også bli variert, hvor masser svarende til halvdelen av en mynts masse har fungert, liksom masser svarende til det dobbelte av myntens masse har gitt gode resultater. Det er en enkel sak for fagmannen på området å variere disse para-metrene i samsvar med kraven for anvendelsen. En gaffel 4 overfører svingningene oppstått i prismelegemet 2 ved myntens 1 fall til et piezoelektrisk element 5. Det piezoelektriske elementet er opphengt fritt mellom kontaktfjærer 7 og 8 og styreribber 6. Det elektriske signalet fra det piezoelektriske elementet blir forsterket i en forsterker 9 og er klassifisert ved hjelp av en nivådetektor 10. Det er klart for fagmannen på området at detekteringen av svingningen også kan bli utført elektrodynamisk eller ved hjelp av andre egnede svingningsdetekteringsinnretninger med egnede endringer i forsterkningen 9. The drawing shows how the mechanical elasticity can be detected. A coin 1 falls a well-defined distance h under the influence of gravity and hits a prismatic body which is supported by a rib 3. Depending on the mass of the prismatic body 2, the rib 3 can be elastic or hard and its length can be varied. The mass of the prism body 2 can also be varied, where masses corresponding to half the mass of a coin have worked, just as masses corresponding to twice the mass of the coin have given good results. It is a simple matter for the person skilled in the art to vary these parameters in accordance with the requirements of the application. A fork 4 transfers the oscillations generated in the prism body 2 when the coin 1 falls to a piezoelectric element 5. The piezoelectric element is suspended freely between contact springs 7 and 8 and guide ribs 6. The electrical signal from the piezoelectric element is amplified in an amplifier 9 and is classified by means of a level detector 10. It is clear to the expert in the field that the detection of the oscillation can also be carried out electrodynamically or by means of other suitable oscillation detection devices with suitable changes in the amplification 9.
Når mynten 1 treffer prismelegemet 2 blir mekaniske svingninger frembrakt deri, hvis amplitude for en gitt myntstør-relse er avhengig av den mekaniske elastisiteten til mynten. En blyskive med en viss diameter vil gi opphav til svingninger som har mindre amplitude enn en nysølvmynt av samme diameter. Amplituden kan bli påvirket ved valg av materiale for prismelegemet. Således kan det i visse tilfeller til-veiebringes en forenklet klassifisering i nivådetektoren 10 dersom det blir benyttet materiale som har en stor indre dempning, idet dette påvirker overføringen av energi fra .den fallende mynten til det svingende legemet med en endring i varigheten av svingningen til følge. Nivådetektoren 10 avgir kun et utgangssignal på terminal 11 i tilfelle hvor amplituden til de mekaniske svingningene i prismelegemet overskrider et visst nivå. Dette signalet kan bli benyttet ved den videre vurderingen av myntens verdi som godkjennel-sessignal. When the coin 1 hits the prism body 2, mechanical oscillations are produced therein, the amplitude of which for a given coin size is dependent on the mechanical elasticity of the coin. A lead disc of a certain diameter will give rise to oscillations of smaller amplitude than a new silver coin of the same diameter. The amplitude can be affected by the choice of material for the prism body. Thus, in certain cases, a simplified classification can be provided in the level detector 10 if material is used which has a large internal damping, as this affects the transfer of energy from the falling coin to the oscillating body with a change in the duration of the oscillation to follow. The level detector 10 only emits an output signal on terminal 11 in the case where the amplitude of the mechanical oscillations in the prism body exceeds a certain level. This signal can be used in the further assessment of the coin's value as an approval signal.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK327581A DK327581A (en) | 1981-07-23 | 1981-07-23 | PROCEDURE FOR CLASSIFYING MOUNTS ACCORDING TO THEIR MECHANICAL ELASTICITY |
Publications (1)
Publication Number | Publication Date |
---|---|
NO830911L true NO830911L (en) | 1983-03-15 |
Family
ID=8121080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO830911A NO830911L (en) | 1981-07-23 | 1983-03-15 | PROCEDURE FOR CLASSIFYING COINS ACCORDING TO THEIR MECHANICAL ELASTICITY |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0084044A1 (en) |
JP (1) | JPS58501150A (en) |
DK (1) | DK327581A (en) |
ES (1) | ES8308113A1 (en) |
IT (1) | IT8267943A0 (en) |
NO (1) | NO830911L (en) |
PT (1) | PT75285B (en) |
WO (1) | WO1983000400A1 (en) |
ZA (1) | ZA825301B (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2168185B (en) * | 1984-12-05 | 1987-09-23 | Mars Inc | Checking coins |
EP0356582A1 (en) * | 1988-08-05 | 1990-03-07 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Object identification |
GB8928256D0 (en) * | 1989-12-14 | 1990-02-21 | Maygay Machines | Coin release verification |
AU653547B2 (en) * | 1990-08-08 | 1994-10-06 | Azkoyen Industrial S.A. | Device and method for obtaining mechanical characteristics of coins |
ES2036462B1 (en) * | 1991-07-30 | 1993-12-16 | Azkoyen Ind Sa | PROCEDURE FOR THE IDENTIFICATION OF COINS. |
ES2036927B1 (en) * | 1991-08-08 | 1994-02-16 | Azkoyen Ind Sa | PROCEDURE TO DETECT THE OPERATION OF THE COIN RECOVERY MECHANISM IN COIN SELECTORS. |
DE4138018C1 (en) * | 1991-11-19 | 1992-11-05 | National Rejectors Inc. Gmbh, 2150 Buxtehude, De | |
ES2037636A6 (en) * | 1992-03-24 | 1993-06-16 | Azkoyen Ind Sa | Device for obtaining the mechanical characteristics of coins. |
ES2046119B1 (en) * | 1992-06-01 | 1994-10-16 | Azkoyen Ind Sa | PROCEDURE FOR THE VERIFICATION OF COINS. |
ES2046128B1 (en) * | 1992-06-12 | 1994-10-01 | Azkoyen Ind Sa | COIN SELECTOR. |
ES2046127B1 (en) * | 1992-06-12 | 1994-10-01 | Azkoyen Ind Sa | COIN SELECTOR. |
DE19503765C1 (en) * | 1995-02-04 | 1996-05-02 | Nat Rejectors Gmbh | Coin checking system with test for coin hardness |
ES2108643B1 (en) * | 1995-09-28 | 1998-07-01 | Azkoyen Ind Sa | COIN IDENTIFICATION PROCEDURE. |
EP1383086A1 (en) | 2002-07-19 | 2004-01-21 | Mars, Incorporated | Coin validation by signal processing |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2022180A (en) * | 1933-05-02 | 1935-11-26 | Braun Theodor | Method of and means for separation and sorting |
US2160751A (en) * | 1937-10-01 | 1939-05-30 | Mills Novelty Co | Coin selector |
US2247488A (en) * | 1939-08-21 | 1941-07-01 | Gottfried John | Coin selector |
US2317351A (en) * | 1940-10-25 | 1943-04-27 | Earl Hovey C | Electrical selector for coin chutes |
DE2005038B2 (en) * | 1970-01-31 | 1972-12-14 | COIN VALIDATOR WITH ANVIL | |
DE2015491A1 (en) * | 1970-03-24 | 1971-10-14 | Walter Hanke Mechanische Werks | Coin acceptor |
US4096933A (en) * | 1976-11-16 | 1978-06-27 | Fred M. Dellorfano, Jr. | Coin-operated vending systems |
-
1981
- 1981-07-23 DK DK327581A patent/DK327581A/en not_active Application Discontinuation
-
1982
- 1982-07-21 PT PT75285A patent/PT75285B/en unknown
- 1982-07-22 ES ES514234A patent/ES8308113A1/en not_active Expired
- 1982-07-23 WO PCT/DK1982/000072 patent/WO1983000400A1/en not_active Application Discontinuation
- 1982-07-23 JP JP57502260A patent/JPS58501150A/en active Pending
- 1982-07-23 IT IT8267943A patent/IT8267943A0/en unknown
- 1982-07-23 ZA ZA825301A patent/ZA825301B/en unknown
- 1982-07-23 EP EP82902252A patent/EP0084044A1/en not_active Withdrawn
-
1983
- 1983-03-15 NO NO830911A patent/NO830911L/en unknown
Also Published As
Publication number | Publication date |
---|---|
PT75285A (en) | 1982-08-01 |
ZA825301B (en) | 1983-09-28 |
IT8267943A0 (en) | 1982-07-23 |
JPS58501150A (en) | 1983-07-14 |
ES514234A0 (en) | 1983-08-01 |
EP0084044A1 (en) | 1983-07-27 |
PT75285B (en) | 1984-05-29 |
ES8308113A1 (en) | 1983-08-01 |
WO1983000400A1 (en) | 1983-02-03 |
DK327581A (en) | 1983-01-24 |
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