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    • 5. 发明申请
    • COIN DISCRIMINATION APPARATUS
    • 硬币辨识装置
    • WO1991018372A1
    • 1991-11-28
    • PCT/GB1991000685
    • 1991-04-30
    • COIN CONTROLS LIMITEDHUTTON, Les
    • COIN CONTROLS LIMITED
    • G07F03/02
    • G07D5/08
    • In coin discrimination apparatus, a coin under test rolls past first and second inductive sensors (C1, C2) which produce first and second coin signals (x1 x2) in dependence upon the coin under test. The coin signals are compared with data defining first and second stored windows (W1, W2) to determine acceptability of the coin. In accordance with the invention the data for the first and second windows (W1, W2) are stored respectively for providing both a first and a second window width ((W11, W12; W21, W22), wherein the first window width corresponds to the width of a distribution of coin signals associated with acceptable coins of a particular denomination, and the second window width corresponds to the width of said distribution but excludes therefrrom a range of values corresponding to fraudulent coins, and a coin under test is deemed to be acceptable upon the coin signals falling either within a first or a second acceptance condition wherein, for the first acceptance condition, the value of the first coin signal falls within the first window width of the first window (W11), and the value of the second coin signal falls within the second window width of the second window (W22), and for the second acceptance condition the value of the first coin signal falls within the second window width of the first window (W12), and the value of the second coin signal falls within the first window width of the second window (W21).
    • 在硬币识别装置中,被测硬币经过第一和第二感应传感器(C1,C2),根据被测硬币产生第一和第二硬币信号(x1×2)。 将硬币信号与定义第一和第二存储窗口(W1,W2)的数据进行比较,以确定硬币的可接受性。 根据本发明,分别存储第一和第二窗口(W1,W2)的数据以提供第一和第二窗口宽度((W11,W12; W21,W22)),其中第一窗口宽度对应于 与特定面额的可接受的硬币相关联的硬币信号的分布的宽度,第二窗口宽度对应于所述分配的宽度,但不包括与欺诈硬币相对应的值的范围,并且被测硬币被认为是可接受的 在硬币信号落在第一或第二接受条件内,其中对于第一接受条件,第一硬币信号的值落在第一窗口的第一窗口宽度(W11)内,第二硬币的值 信号落入第二窗口(W22)的第二窗口宽度内,并且对于第二接受条件,第一硬币信号的值落入第一窗口宽度的第二窗口宽度 w(W12),第二硬币信号的值落在第二窗口的第一窗口宽度(W21)内。