EP0119936B1 - Procédé optique pour déterminer les dimensions d'un objet en mouvement relatif, et plus particulièrement d'une pièce de monnaie dans un appareil à pré-paiement, et dispositif pour sa mise en oeuvre - Google Patents

Procédé optique pour déterminer les dimensions d'un objet en mouvement relatif, et plus particulièrement d'une pièce de monnaie dans un appareil à pré-paiement, et dispositif pour sa mise en oeuvre Download PDF

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Publication number
EP0119936B1
EP0119936B1 EP84420015A EP84420015A EP0119936B1 EP 0119936 B1 EP0119936 B1 EP 0119936B1 EP 84420015 A EP84420015 A EP 84420015A EP 84420015 A EP84420015 A EP 84420015A EP 0119936 B1 EP0119936 B1 EP 0119936B1
Authority
EP
European Patent Office
Prior art keywords
cells
diameter
track
signals
thickness
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.)
Expired
Application number
EP84420015A
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German (de)
English (en)
French (fr)
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EP0119936A1 (fr
Inventor
Christian Sellier
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.)
Mecelec SA
Original Assignee
Mecelec SA
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Filing date
Publication date
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Application filed by Mecelec SA filed Critical Mecelec SA
Publication of EP0119936A1 publication Critical patent/EP0119936A1/fr
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    • 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 present invention relates to an optical method suitable for determining the dimensions of a moving object relative to the device itself, and it is more particularly applicable to the case of coins engaged in a prepayment device, such as than a vending machine.
  • TEL S.A. relates to a coin or token selector according to their diameter.
  • the device comprises on the one hand an inclined raceway defined by a notch whose bottom and one of the side walls are oriented obliquely, on the other hand two detectors placed one upstream, the other downstream, of the calibration channel formed by said raceway and at least two superimposed parts of longitudinal guide each of which has, on the downstream side, an abutment recess, If, owing to its diameter, a part is kept in bearing against this recess, its stop is revealed by the detectors, and these actuate a mechanism which retracts the lower part of the raceway and thereby evacuates the rejected part in a return channel.
  • the selector described takes into account the thickness of each part as a result of the V-profile of the section of the notch which forms the raceway.
  • the present invention aims to make it possible to establish a particularly simple optical process requiring only a small number of cells and by means of which the diameter and thickness of a coin can be determined and / or checked extremely precisely. introduced into a device of the kind in question, it being understood that it can also be applied to all cases posing similar problems.
  • the invention also relates to a device for implementing the determination and / or verification method.
  • the reference 1 designates a coin of diameter d located in a vertical mean plane and which rolls at a constant speed on a surface or track 2 following a rectilinear path X-X ', its guidance, its retention in the aforementioned plan and its advance being provided by means not shown, but easy to imagine. It is thus caused to pass between a photoelectric cell 3a and a light source 4a which illuminates the latter. Therefore, the output of the cell affects the ABCDEF profile shown in fig. 3. At time t 1a corresponds the detection of the front edge of the part 1 and at time t 28 that of its rear edge.
  • the expression (t 2a - t 1a ) / v corresponds to the length of segment or chord PQ determined on the circular profile of the part by its intersection with the horizontal plane YY ' in which cell 3a is located. If we call this length I, and if we designate by h the vertical distance between the planes XX 'and Y-Y', we easily find that the diameter d of the part 1 is given by the formula ( 1 2 + 4h 2 ) / 4h.
  • the speed of movement v of the part 1 is not a known parameter.
  • an auxiliary photoelectric cell 3b is used, also located in the plane Y-Y ', but at a certain distance from cell 3a.
  • the response of this cell to the passage of the room is indicated by the line A'B'C'D'E'F 'in fig. 3.
  • the part 1 was moving in a uniform movement. However, this is hardly ever the case. This movement is in fact ensured by gravity by suitably inclining the path XX 'on the running surface 2 (and of course inclining the plane YY' in which the cells are located correspondingly). As a result, the movement of the part tends to take place with constant acceleration, C'D 'then being a little shorter than CD, as shown in fig. 4. To eliminate this source of error, the invention calls upon the concept of average speed, valid in the case of a uniformly accelerated movement and according to which the displacement produced between two determined instants is equal to the time which separates them. multiplied by the average of the instantaneous speeds at each of them.
  • the speed is equal to m / (t ib - t ,,) when passing in front of the first cell and to m / (t 2b -t 28 ) in front of the second. It is easy to program the microcomputer 5 so that it calculates the average of these two values and uses it to determine the diameter of the part.
  • the two cells 3a and 3b then play the same role.
  • a second important factor for the sorting operation of the pieces is constituted by the thickness of the latter.
  • the invention provides for rolling the part 1 no longer on a flat surface or track, but in a rectilinear notch comprising (fig. 5) a vertical flank 6 and an inclined flank 7. It will be understood that the height p of the rolling path XX '(fig. 6) of the part above the bottom of the groove is directly proportional to the thickness of the latter. For a thinner piece 1 '(fig. 7)) the path in question is located lower, while for a thicker piece 1 "(fig. 8) it is higher.
  • a third photoelectric cell 3c is located along the length of the groove, situated in a horizontal plane ZZ 'different from that YY' of cells 3a and 3b.
  • the height of this plane is referenced h 2 above the rolling path XX 'of the part 1, the height of the plane YY' being here designated by h ,.
  • This cell also responds to the passage of the room 1 by sending corresponding signals to the microcomputer 5.
  • the shape of all three signals thus received by the computer namely ABCDEF for the first cell 3a A'B'C'D'E'F 'for the second 3b, and A "B" C “D” E “F” for the third 3c, assuming the three cells arranged in elevation as shown in fig. 6.
  • the speed of the part being measured by cells 3a and 3b, this third cell 3c allows for its part to measure the segment or rope RS as a function of this speed.
  • the microcomputer 5 must deduce from the signals from cell 3c a diameter strictly equal to that calculated from those received from cells 3a and 3b. If this is not the case, it is because the part follows a different path located below or above X-X ', so that it does not have the expected thickness.
  • the device described with reference to FIG. 6 can function correctly even if the plane Y-Y 'passes substantially through the center O of the part. Indeed, if then cells 3a and 3b are practically unaffected by small variations in the insertion of the part into the notch 6-7, the third cell 3c, located at a clearly different level, is so sufficient to identify the part in question.
  • the device in question must successively receive several different parts in order to function, the device can then send to the microcomputer 5 signals indicating the length of the segments PQ and RS, which 'he measured.
  • the microcomputer compares this data with that stored in its memory and decides whether the document can be accepted or not. If not, it rejects it and if so it sends the representation of its value to an appropriate totalizer capable of triggering the prepayment device when the total forecast is reached.
  • Fig. 10 shows that the calculation of the diameter of the circle representative of the piece 1 (or 1 ′ or 1 ", figs. 7 and 8) is perfectly possible from the signals received from the cells, without having to worry about the height rolling path of the part considered.
  • the length of the cord PQ measured by cells 3a and 3b, and 1 2 that of the cord RS determined by the third cell 3c we see easily that if they are arranged symmetrically with respect to a vertical axis UU ', taking care to keep them at the spacing h, -h 2 from the horizontal planes YY' and Z-Z ', the four points PQRS clearly define a single circumference whose diameter we can calculate when we know l 1 , 1 2 , h, and h 2.
  • the diameter of the part is known, it is easy to calculate its thickness, if desired, by determining the height of the center O above one of the segments PQ and RS, by adding to the value thus found the height of the plane of this segment above that of the entry of notch 6-7, then subtracting the radius of the part from the total. From the value of this depression, the desired thickness is deduced.
  • Fig. 11 very schematically indicates how a device according to the invention can be produced in practice.
  • the cells such as 3a and 3c are mounted in the perforations of the wall 8. This constitutes the right flank 6 of the lower notch, the oblique flank 7 of which is connected to another wall 9 which defines the corridor with the previous 8 in which circulate the parts introduced into the device.
  • This corridor is closed at the top by an upper strip 10.
  • the cells are the light emitters, here 4a for cell 3a and 4c for that 3c. These emitters can be photo-diodes, the cells being photo-transistors on their side.
  • At least one of the planes Y-Y 'and Z-Z' may be above the center of the room.
  • the spacing between cells 3a and 3b can vary.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Coins (AREA)
  • Length Measuring Devices By Optical Means (AREA)
EP84420015A 1983-02-10 1984-02-01 Procédé optique pour déterminer les dimensions d'un objet en mouvement relatif, et plus particulièrement d'une pièce de monnaie dans un appareil à pré-paiement, et dispositif pour sa mise en oeuvre Expired EP0119936B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8302442 1983-02-10
FR8302442A FR2541019B1 (fr) 1983-02-10 1983-02-10 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

Publications (2)

Publication Number Publication Date
EP0119936A1 EP0119936A1 (fr) 1984-09-26
EP0119936B1 true EP0119936B1 (fr) 1986-12-03

Family

ID=9285941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84420015A Expired EP0119936B1 (fr) 1983-02-10 1984-02-01 Procédé optique pour déterminer les dimensions d'un objet en mouvement relatif, et plus particulièrement d'une pièce de monnaie dans un appareil à pré-paiement, et dispositif pour sa mise en oeuvre

Country Status (7)

Country Link
US (1) US4585936A (enrdf_load_stackoverflow)
EP (1) EP0119936B1 (enrdf_load_stackoverflow)
JP (1) JPS59182303A (enrdf_load_stackoverflow)
DE (1) DE3461568D1 (enrdf_load_stackoverflow)
DK (1) DK57184A (enrdf_load_stackoverflow)
FI (1) FI77336C (enrdf_load_stackoverflow)
FR (1) FR2541019B1 (enrdf_load_stackoverflow)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646904A (en) * 1985-09-05 1987-03-03 Coin Acceptors, Inc. Coin sizing means and method
ES8708074A1 (es) * 1986-05-21 1987-09-01 Azkoyen Ind Sa Perfeccionamientos en mecanismos selectores de moneda
DE3625564A1 (de) * 1986-07-29 1988-02-04 Hegenscheidt Gmbh Wilhelm Verfahren zur ermittlung des durchmessers der raeder von schienenfahrzeugen und einrichtung hierzu
DE3640633A1 (de) * 1986-11-27 1988-06-09 Kugelfischer G Schaefer & Co Kaefig fuer kugellager
FI81458C (fi) * 1987-03-31 1990-10-10 Inter Marketing Oy Anordning foer identifiering av mynt eller dylika.
JP2524823B2 (ja) * 1988-11-02 1996-08-14 株式会社田村電機製作所 硬貨外径選別装置
GB2243238B (en) * 1990-04-20 1994-06-01 Tetrel Ltd Coin validators
IT1243886B (it) * 1990-11-02 1994-06-28 Marconi Italiana Automazione E Metodo ed apparecchiatura per l'identificazione di monete.
GB9024988D0 (en) * 1990-11-16 1991-01-02 Coin Controls Coin discrimination apparatus with optical sensor
GB2266175B (en) * 1992-04-14 1996-01-24 Nsm Ag A device for the measurement of the diameter of coins or other circular objects
US5381880A (en) * 1992-11-09 1995-01-17 Pearson; Rune S. Electronic coin mechanism
DE4313544C2 (de) * 1993-04-24 2001-11-08 Nat Rejectors Gmbh Lichtschranke in einem Münzgerät
DE4314596C1 (de) * 1993-05-04 1994-10-27 Nat Rejectors Gmbh Vorrichtung zum Festlegen von Sensorelementen in elektronischen Münzprüfgeräten
US5684597A (en) * 1994-02-10 1997-11-04 Hossfield; Robin C. Method and device for coin diameter discrimination
US5788046A (en) * 1994-03-04 1998-08-04 Austel Licensing Gmbh Method for recognizing coins and apparatus therefor
ES2093478T3 (es) 1994-07-29 1996-12-16 Landis & Gyr Tech Innovat Dispositivo para examinar monedas u objetos planos.
US5562917A (en) * 1994-12-23 1996-10-08 Pentech Pharmaceuticals, Inc. Transdermal administration of apomorphine
KR100296694B1 (ko) * 1997-05-21 2001-08-07 오까다 마사하루 화폐선별방법및장치
US20040079616A1 (en) * 1997-07-11 2004-04-29 Castleberry Billy J. Snack dispenser
US7635059B1 (en) 2000-02-02 2009-12-22 Imonex Services, Inc. Apparatus and method for rejecting jammed coins
TW411389B (en) * 2000-03-09 2000-11-11 Liou Hung Lung Method for measuring dimensions of a circular object through time measurement
JP2002109596A (ja) * 2000-09-28 2002-04-12 Nippon Conlux Co Ltd 貨幣識別方法及び装置
US7822679B1 (en) 2001-10-29 2010-10-26 Visa U.S.A. Inc. Method and system for conducting a commercial transaction between a buyer and a seller
US20030154153A1 (en) * 2002-01-31 2003-08-14 Steidlmayer J. Peter Composite commodity financial product
US6798353B2 (en) * 2002-04-24 2004-09-28 Itron Electricity Metering, Inc. Method of using flash memory for storing metering data
US8606697B2 (en) * 2004-06-17 2013-12-10 Visa International Service Association Method and system for providing buyer bank payable discounting services
US7711639B2 (en) * 2005-01-12 2010-05-04 Visa International Pre-funding system and method
WO2010106622A1 (ja) * 2009-03-16 2010-09-23 グローリー株式会社 径検出装置および径検出方法
US8170831B2 (en) * 2009-04-29 2012-05-01 Maw-Yuan Liou Apparatus and method for measuring dimension of circular object
JP5237881B2 (ja) * 2009-05-07 2013-07-17 茂源 劉 円形の物体のサイズを測定する手段とその方法
CN106091951B (zh) * 2016-05-27 2018-11-13 南京理工大学 一种城轨列车轮缘参数在线检测系统及方法
CN106043356A (zh) * 2016-05-27 2016-10-26 南京理工大学 一种城轨列车轮缘顶点圆直径在线检测方法及系统
CN105835901B (zh) * 2016-05-27 2019-01-18 南京理工大学 一种列车车轮直径检测的方法及其系统
CN106091959B (zh) * 2016-05-27 2018-10-12 南京睿速轨道交通科技有限公司 一种城轨列车车轮轮缘顶点圆直径的检测方法及其系统

Family Cites Families (9)

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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
BE787128A (fr) * 1971-08-16 1972-12-01 Mars Inc Discriminateur de pieces de monnaie
FR2215661B1 (enrdf_load_stackoverflow) * 1973-01-29 1976-05-14 Tel Sa
GB1580425A (en) * 1976-01-09 1980-12-03 Mars Inc Coin testing apparatus
GB1582847A (en) * 1976-12-02 1981-01-14 Mars Inc Coin testing device
US4249648A (en) * 1978-04-27 1981-02-10 Keene Corporation Token identifying system
US4267916A (en) * 1979-01-30 1981-05-19 Keene Corporation Coin identification system
FR2515395B1 (fr) * 1981-10-27 1985-05-31 Doucet Joel Selecteur multipiece de monnaie

Also Published As

Publication number Publication date
DE3461568D1 (en) 1987-01-15
EP0119936A1 (fr) 1984-09-26
FR2541019A1 (fr) 1984-08-17
JPH0374764B2 (enrdf_load_stackoverflow) 1991-11-28
FI840509A0 (fi) 1984-02-08
FI77336C (fi) 1989-02-10
JPS59182303A (ja) 1984-10-17
DK57184D0 (da) 1984-02-09
FI77336B (fi) 1988-10-31
DK57184A (da) 1984-08-11
US4585936A (en) 1986-04-29
FR2541019B1 (fr) 1986-07-18
FI840509L (fi) 1984-08-11

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