SE8803360D0 - PROCEDURE AND APPARATUS FOR THE EXAMINATION OF THE ASSEMBLY - Google Patents
PROCEDURE AND APPARATUS FOR THE EXAMINATION OF THE ASSEMBLYInfo
- Publication number
- SE8803360D0 SE8803360D0 SE8803360A SE8803360A SE8803360D0 SE 8803360 D0 SE8803360 D0 SE 8803360D0 SE 8803360 A SE8803360 A SE 8803360A SE 8803360 A SE8803360 A SE 8803360A SE 8803360 D0 SE8803360 D0 SE 8803360D0
- Authority
- SE
- Sweden
- Prior art keywords
- coin
- magnetic field
- measuring value
- specific
- type
- Prior art date
Links
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
- G07D5/08—Testing the magnetic or electric properties
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Coins (AREA)
Abstract
An apparatus (10) for examining a coin comprises a first oscillating magnetic field of a first frequency generated by means of a first inductor (21), and a second oscillating magnetic field of a different second frequency generated by means of a second inductor (22). The coin (15, 16) is guided past the inductors (21, 22) so as to expose the coin (15, 16) to the first and the second magnetic field. A first and a second measuring value are generated representing the degrees of interaction between the coin (15, 16) and the first and the second magnetic field, respectively, and a weighted sum of the first and the second measuring value is provided by multiplying the first and the second measuring value by a first and a second, predetermined weighting factor, respectively, which weighting factors are characteristic of a specific coin type, and further by adding the first and the second measuring value multiplied by the first and the second weighting factor, respectively. In order to determine if the coin (15, 16) is of a specific valid type, it is determined if the weighted sum is within specific limits of acceptance which are characteristic of the specific type of coin in question. By this method, it is possible to distinguish between coins which in accordance with known logic AND decision technique have previously not been distinguishable in a reliable way. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK546087A DK546087A (en) | 1987-10-19 | 1987-10-19 | METHOD AND APPARATUS FOR THE EXAMINATION OF MOUNTS |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8803360D0 true SE8803360D0 (en) | 1988-09-22 |
SE8803360L SE8803360L (en) | 1989-04-20 |
Family
ID=8142628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8803360A SE8803360L (en) | 1987-10-19 | 1988-09-22 | SET AND APPARATUS FOR COIN INVESTIGATION |
Country Status (3)
Country | Link |
---|---|
DK (1) | DK546087A (en) |
GB (1) | GB2211337A (en) |
SE (1) | SE8803360L (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2238152B (en) * | 1989-10-18 | 1994-07-27 | Mars Inc | Method and apparatus for validating coins |
US5404987A (en) * | 1989-10-18 | 1995-04-11 | Mars Incorporated | Method and apparatus for validating money |
GB2251111B (en) * | 1990-09-24 | 1994-08-17 | Roke Manor Research | Acoustic coin validation |
GB2253297B (en) * | 1991-02-27 | 1994-11-16 | Mars Inc | Coin validation |
EP0570692B1 (en) * | 1992-05-22 | 1997-07-16 | Journomat Ag | Automatic coin collector |
US5489014A (en) * | 1994-08-03 | 1996-02-06 | Journomat Ag | Apparatus for checking coins and reading cards in an article vending machine |
EP0704825B1 (en) * | 1994-09-21 | 1997-11-26 | Landis & Gyr Technology Innovation AG | Device for authenticating coins, tokens or other flat metal objects |
GB2341263B (en) * | 1998-08-14 | 2002-12-18 | Mars Inc | Method and apparatus for validating currency |
-
1987
- 1987-10-19 DK DK546087A patent/DK546087A/en not_active Application Discontinuation
-
1988
- 1988-09-21 GB GB8822205A patent/GB2211337A/en not_active Withdrawn
- 1988-09-22 SE SE8803360A patent/SE8803360L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DK546087A (en) | 1989-04-20 |
GB2211337A (en) | 1989-06-28 |
GB8822205D0 (en) | 1988-10-26 |
SE8803360L (en) | 1989-04-20 |
DK546087D0 (en) | 1987-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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