Apparatus and method for conserving power in an electronic...

Details Apparatus and method for conserving power in an electronic... Apparatus and method for conserving power in an electronic...

H - Electricity

04

M

379/74, 340/124.

H04M 17/02 (2006.01) G07D 5/08 (2006.01)

Patent

CA 2027139

An electronic coin chute (ECC) for use in a public telephone station has only a small amount of electrical power available from the telephone line when examining coins for authenticity and denomination. To conserve power during the examination process, a plurality of coin quality sensors are used, each designed to use minimum power. Each sensor generates an oscillating magnetic field that interacts with the coin as it gravitates through the coin chute. By monitoring the output electrical signal from each coin quality sensor, the microprocessor is able to determine when the coin has moved beyond its field and, in response, power is removed from that sensor and applied to the next. After the coin's qualities have been measured, they are compared with stored acceptance limits. Power is removedfrom the last coin quality sensor and applied to a coin routing apparatus to guide acceptable coins into a collection box.

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