EP0533386B1 - Méthode et dispositif pour le contrÔle d'un capteur opto-électronique - Google Patents

Méthode et dispositif pour le contrÔle d'un capteur opto-électronique Download PDF

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Publication number
EP0533386B1
EP0533386B1 EP92308165A EP92308165A EP0533386B1 EP 0533386 B1 EP0533386 B1 EP 0533386B1 EP 92308165 A EP92308165 A EP 92308165A EP 92308165 A EP92308165 A EP 92308165A EP 0533386 B1 EP0533386 B1 EP 0533386B1
Authority
EP
European Patent Office
Prior art keywords
light emitting
optical sensor
emitting amount
amount
bill
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 - Lifetime
Application number
EP92308165A
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German (de)
English (en)
Other versions
EP0533386A1 (fr
Inventor
Toshihiko Tasaki
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0533386A1 publication Critical patent/EP0533386A1/fr
Application granted granted Critical
Publication of EP0533386B1 publication Critical patent/EP0533386B1/fr
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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
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/121—Apparatus characterised by sensor details
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/50—Sorting or counting valuable papers

Definitions

  • the present invention relates to a method and an apparatus for controlling an optical sensor. More particularly, the invention relates to a method and an apparatus for controlling an optical sensor suitable for accurately detecting bill or the like.
  • EP-A-0342647 discloses a system in which numerical parameters for a single kind of banknote are stored and used to control an optical sensor independent of the actual type of banknote being processed by the system.
  • a light emitting amount data defining a light emitting amount of a light emitting element is stored with respect to each kind of the bill or the like to be detected. A single kind of bill or the like to be examined is then set. The light emitting amount data is read out depending upon the kind of bill or the like to be detected so that the light emitting amount of the light emitting element is controlled on the basis of the read out light emitting amount data.
  • the senor since the light emitting amount data corresponding to the bill or the like to be detected is read out among a plurality of preliminary stored light emitting amount data and the light emitting amount of an optical sensor is controlled on the basis of the read out light emitting amount data, the sensor can emit the light with the optical emitting amount depending upon the bill or the like to be detected for accurately detecting the bill or the like.
  • Fig. 2 is an explanatory sectional view of one example of a cash dispensing apparatus, in which an embodiment of an optical sensor control apparatus according to the invention.
  • bills are set in cassettes 17, 18 and 19 depending upon bill kinds.
  • desired kinds of bills are fed from the cassettes 17, 18 and 19.
  • a piling bill detecting portion 15 detects bills fed in pile and discriminate the piling bills from normal bills for separating at a gate 20.
  • the normal bills are stacked in a dispensing stacker 14.
  • the piling bills are stacked in a reject box 16.
  • sensors S1 to S8 are provided for monitoring transportation of the bills.
  • Fig. 1 is a block diagram of one embodiment of the optical sensor control apparatus according to the invention, which is adapted to be employed in the cash dispensing apparatus 13 of Fig. 2.
  • CPU 1 operates according to programs stored in RAM 3.
  • ROM 2 a plurality of sensor light emitting amount tables corresponding to kinds of bills to be detected are stored.
  • DIP switches 10, 11 and 12 are adapted to be set bill codes indicative of kinds of bills stored in the cassettes 17, 18 and 19 which are shown in Fig. 2.
  • the CPU 1 reads out the set value of the DIP switch 10 via a bill information input port 6.
  • CPU 1 sets a light emitting amount data (digital data) stored in ROM 2 for each of the sensors S1 to S8 corresponding to the bill code 0 in a light emitting amount register 4.
  • CPU 1 sets the light emitting amount data corresponding to the bill code set in the DIP switch 11, to the light emitting amount register 4.
  • CPU 1 sets the light emitting amount data corresponding to the bill code set in the DIP switch 12, to the light emitting amount register 4.
  • CPU 1 is controlled by a control CPU 100 of the dispensing apparatus.
  • CPU 100 also controls a bill feeding path and the piling bill detecting portion 15.
  • This CPU 100 is, in turn, controlled by a superior control device, such as a host computer.
  • Respective optical sensors S1 to S8 comprise light-emitting diodes S1D to S8D and phototransistors S1T to S8T.
  • the digital light emitting amount data for the sensor S1, written in the light emitting amount register 4, is converted into an analog value by a D/A converter 7, and further converted into a current in a light emitting amount control circuit 8 to drive the light emitting diode S1D of the sensor S1.
  • the light emitted from the light emitting diode S1D may not reach the phototransistor S1T so as to maintain the phototransistor S1T at OFF position. Then, the OFF position of the phototransistor S1T is converted into a logical value "1" by a light receiving circuit 9 of the sensor.
  • the converted logical value is read out by CPU 1 through a sensor information input port 5.
  • the bill is not present between the light emitting diode S1D and the phototransistor S1T of the sensor S1
  • the light emitted from the light emitting diode S1D is reaches the phototransistor S1T to turn the latter ON.
  • the logical value converted by the light receiving circuit 9 of the sensor becomes "0".
  • CPU 1 reads out the logical value through the sensor information input port 5.
  • the sensors S2 to S8 emit the lights according to the corresponding light emitting amount data which are set in the light emitting amount register 4 to perform detection of the bills.
  • the bills are semi-light permeable articles which permits certain amount of light. The thicker bills pass the smaller amount of light and thinner bills pass the greater amount of light. Therefore, it becomes necessary to properly set the light emitting amount depending upon the bills to be detected.
  • Fig. 3 is an explanatory illustration showing the sensor light emitting amount table for the sensor, which is set for each kind of bills and stored in ROM 2.
  • each of the sensor light emitting amount tables for each of the bill codes 0 ⁇ n proper light emitting amounts corresponding to the thickness of the bills are set with respect to respective sensors.
  • CPU 1 reads out the light emitting amount data for respective of the sensors S1 to S8, stored in ROM 2, corresponding to the bills to be used and writes in the light emitting amount register 4.
  • the lights in the proper light emitting amount corresponding to the kinds of bills can be emitted from the sensors S1 to S8 to successfully avoid erroneous detection of the bills.
  • Fig. 4 is a flowchart showing process for setting the light emitting amounts for the sensors upon dispensing a cash. Every time of switching the bill to be fed from the cassette, the light emitting amounts of the sensors S1 to S8 are modified through the process as illustrated in Fig. 4.
  • CPU 1 reads out the value of the DIP switch 10 as shown in Fig. 1, through the bill information input port 6.
  • the code indicative of the kind of bill stored in the cassette 17 is set.
  • CPU 1 sets the light emitting amount data stored in ROM 2 and corresponding to the bill code 0, in the light emitting amount register 4.
  • the light emitting amount data corresponding to the bill code set in the DIP switch 11 is set. Also, when the bill in the cassette 19 is fed, the light emitting amount data corresponding to the bill code set in the DIP switch 12 is set.
  • the present invention should not be limited to the shown arrangement.
  • the optical sensors Since it becomes possible to operate the optical sensors to emit the lights in the proper light emitting amount corresponding to the kind of the bills to be used, the erroneous detection of the bills which can be caused by passing of the light through the bills can be successfully prevented.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Conveying Record Carriers (AREA)

Claims (5)

  1. Procédé de contrôle de la quantité de lumière émise par un capteur optique (S1-S8) comportant un élément émetteur de lumière (S1D-S8D) et un élément récepteur de lumière (S1T-S8T), procédé comportant l'étape consistant à :
    mémoriser des données de quantité d'émission de lumière définissant la quantité de lumière émise par ledit élément émetteur de lumière en fonction de types de feuilles de papier devant être soumises à une détection par ledit capteur;
    et caractérisé en ce qu'il comporte en outre les étapes consistant à :
    spécifier le type de feuille de papier devant être détectée par ledit capteur optique;
    lire les données de quantité d'émission de lumière correspondant au type spécifié de feuille de papier; et
    contrôler la quantité de lumière émise par ledit élément émetteur de lumière en fonction des données de quantité d'émission de lumière lues.
  2. Dispositif de contrôle à capteur optique comportant :
    un capteur optique (S1-S8) constitué d'un élément émetteur de lumière (S1D-S8D) et d'un élément récepteur de lumière (S1T-S8T);
    des moyens formant mémoire de quantité d'émission de lumière (2) pour mémoriser des données de quantité d'émission de lumière définissant la quantité de lumière émise par ledit élément émetteur de lumière en fonction de types de feuilles de papier devant être soumises à une détection par ledit capteur optique; et
    des moyens de contrôle de quantité d'émission de lumière (8) pour contrôler la quantité de lumière émise par ledit élément émetteur de lumière en fonction desdites données de quantité d'émission de lumière;
       et caractérisé en ce qu'il comporte en outre:
    des moyens de spécification du type de feuille de papier (10, 11, 12, 100) pour spécifier le type des feuilles de papier devant être détectées par ledit capteur optique; et
    des moyens de contrôle (1) pour détecter le type de la feuille de papier spécifié par lesdits moyens de spécification de feuille de papier, lire des données de quantité d'émission de lumière correspondant au type détecté de la feuille de papier à partir desdits moyens formant mémoire de quantité d'émission de lumière et délivrer les données de quantité d'émission de lumière lues auxdits moyens de contrôle de quantité d'émission de lumière.
  3. Dispositif de contrôle à capteur optique selon la revendication 2, dans lequel lesdits moyens de spécification du type de feuille de papier (10, 11, 12) sont constitués par un commutateur.
  4. Dispositif de contrôle à capteur optique selon la revendication 2, dans lequel les moyens de spécification du type de feuille de papier (10, 11, 12, 100) comportent un système supérieur (100) relié auxdits moyens de contrôle (1).
  5. Distributeur de billets comprenant ledit dispositif de contrôle à capteur optique selon la revendication 2, la revendication 3 ou la revendication 4.
EP92308165A 1991-09-18 1992-09-09 Méthode et dispositif pour le contrÔle d'un capteur opto-électronique Expired - Lifetime EP0533386B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP237731/91 1991-09-18
JP3237731A JPH0577968A (ja) 1991-09-18 1991-09-18 光学センサ制御方法および装置

Publications (2)

Publication Number Publication Date
EP0533386A1 EP0533386A1 (fr) 1993-03-24
EP0533386B1 true EP0533386B1 (fr) 1996-07-03

Family

ID=17019650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92308165A Expired - Lifetime EP0533386B1 (fr) 1991-09-18 1992-09-09 Méthode et dispositif pour le contrÔle d'un capteur opto-électronique

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Country Link
EP (1) EP0533386B1 (fr)
JP (1) JPH0577968A (fr)
DE (1) DE69211932T2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3105725B2 (ja) * 1993-12-27 2000-11-06 株式会社日本コンラックス 紙幣識別装置
JP3652547B2 (ja) * 1999-05-24 2005-05-25 ローレルバンクマシン株式会社 硬貨判別装置
KR100644703B1 (ko) 2005-06-28 2006-11-10 삼성전자주식회사 용지검출장치 및 인쇄방법
CN114694296A (zh) * 2020-12-31 2022-07-01 深圳怡化电脑股份有限公司 图像采集方法、装置、电子设备和存储介质

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588292A (en) * 1983-05-16 1986-05-13 Rowe International, Inc. Universal document validator
DE3816943A1 (de) * 1988-05-18 1989-11-30 Nixdorf Computer Ag Verfahren zum pruefen von blattmaterial

Also Published As

Publication number Publication date
DE69211932D1 (de) 1996-08-08
JPH0577968A (ja) 1993-03-30
DE69211932T2 (de) 1997-02-13
EP0533386A1 (fr) 1993-03-24

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