G - Physics
07
F
G07F 5/08 (2006.01) G07D 3/14 (2006.01) G07F 1/04 (2006.01) G07F 3/02 (1990.01)
Patent
CA 2086684
A coin validator (10) has a coin path (26) which passes between one set of detect coils (40, 42). The set a of coils (40, 42) is connected in a detect circuit, and the coils (40, 42) are adapted to be energised with a single pulse. The decay curve (70) of the voltage in the coils (40, 42) is processed to pro- duce a set of three numbers of clock counts defining each coin; which are stored in a microprocessor. pre- programming of the valida- tor ( 10) involves generating sets of numbers for repres- entatives of a coin type to create three ranges of num- bers, within which respec- tive range subsequent coin's set of numbers must fall in order for it to be defined as an example of the coin type. The coin path (26) is arranged at an angle to the vertical, and the base (32) is arranged at an angle to the horizontal such that the angle between one wail (36) and the base (32) is between 90° and 180°, causing coins passing along the coin path (26) to orient themselves such that each of them has point contact on the base (32) and on the one wall (36), thereby occupying a generally similar position with respect to the coils (40, 42).
Malzard Norman Raymond
Smith Peter Ronald
Wolstencroft Phillip Andrew
Mcfadden Fincham
Microsystem Controls Pty. Ltd.
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