| 摘要 |
<p>A coin receiving apparatus for a vending machine is disclosed which has a coin detector for producing an output corresponding to the diameter of a deposited coin. One or more coin detectors for a differential transformer type are sequentially arranged adjacent to the coin detector in the coin detection path for producing an output corresponding to coin characteristics or characteristics other than the coin diameter. Determination circuit judges whether the deposited coin is true or false in response to the detected outputs from the respective coin detectors. Coin receipt control circuit responsive to the true or false judgement output from the determination circuit controls the receipt or return of the deposited coin. The deposited coin is received in the receiving apparatus if the detected outputs from all of the coin detectors indicate that the deposited coin is true. Successive deposit determination circuit judges whether the last deposited coin passes through the initial coin detector before the antecedently deposited coin passes through the final coin detector or not. Timer starts to operate when the deposited coin passes through the final coin detector and the successive deposit determination circuit judges. Determination output control circuit applies the true judgement output from the determination circuit to the coin receipt control only when the timer does not operate after the deposited coin passed through the final coin detector. The coin receiving apparatus can reduce the coin return ratio.</p> |
