Method and sensor for sensing coins for valuation

Method and sensor for sensing coins for valuation

A coin sensor and method of identifying coins by size and also discriminating invalid coins includes a portion of a coin track over which coins pass in a single file, an illumination source for illuminating at least portions of the coins as the coins move along the coin track, an optical detector sp...

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Hauptverfasser: Zwieg, Robert L, Brandle, Daniel, Grajewski, John P, Stieber, Jon R, Adams, Thomas P
Format: Patent
Sprache:eng
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creator Zwieg, Robert L
Brandle, Daniel
Grajewski, John P
Stieber, Jon R
Adams, Thomas P
description A coin sensor and method of identifying coins by size and also discriminating invalid coins includes a portion of a coin track over which coins pass in a single file, an illumination source for illuminating at least portions of the coins as the coins move along the coin track, an optical detector spaced from the coin track for detecting a size of at least a portion of each coin passing the coin sensor along the coin track, and a telecentric lens positioned between the optical detector and the coin track, such that the portion of each coin passing the optical detector is seen to have an apparent size and configuration independent of a variation in distance of the coin from the telecentric lens as each coin moves along the coin track. The optical sensor and detector can be angled to assist in preventing stray light from the bottom of the coins from being transmitted to the detector. The sensor assembly also includes inductive sensors and a Hall effect sensor for discriminating invalid coins.
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title Method and sensor for sensing coins for valuation
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