Circular object's diameter determining device

Details Circular object's diameter determining device Circular object's diameter determining device

1983-01-25

1985-07-30

Bartuska, F. J.

Check-actuated control mechanisms

Including noncontacting, relatively movable parts connected...

133 3R, 356386, G07D 502

Patent

active

045316252

ABSTRACT:
A device for determining the diameters of circular objects such as coins is made up of a pair of photo-electric converters which are extended from both sides of a coin passageway towards the central line of the latter, a pair of light-shielded portion area measuring circuits for producing signals representing the areas of the portions of the converters which are shielded from light by a circular object according to the outputs of the converters, an adder for providing the sum of the outputs of the two light-shielded portion area measuring circuits, a maximum value memory circuit for storing the maximum of the outputs of the adder which are provided during passage of one circular object through the converters, and a circuit for determining the diameter of the circular object according to the data stored in the maximum value memory circuit.

REFERENCES:
patent: 3947129 (1976-03-01), Wiklund
patent: 4249648 (1981-02-01), Meyer

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