COIN DISCRIMINATOR

摘要

A method of categorising coins/tokens by energising detect coils with a sing le pulse detecting the back EMF curve of the decaying pulse information, analysing the unmodified back EMF curve to extract theref rom a number of variables and processing those variables to provide values proportional to the variables and, comparting the values of t he coin/token with at least one of a number of reference values to determine into which of a number of predetermined categories the coin/tok en fall.