Paper-type detection device and detection method

摘要

A paper-type detection device comprises a sensor unit, a storage unit and a control unit. The sensor unit is used for detecting a transmission state of a paper according to a fixed clock period, and carrying out binaryzation on detected signals to indicate the presence-absence state of the paper. The storage unit is used for acquiring the signals detected by the sensor unit, acquiring paper information in the signals, and storing the paper information in sequence. The control unit comprises a first state counter and a second state counter. The control unit controls the two state counters for carrying out zero clearing and starting operations for counting in conjunction with the sensor unit.

主权项

1. A paper currency detection apparatus, comprising:
a sensor unit for detecting a transmission state of a paper currency according to a fixed clock period, and binarizing the detected signal to represent whether the paper currency appears; a storage unit for collecting the signal detected by the sensor unit, acquiring paper currency information in the signal and storing the paper currency information in sequence; and a control unit comprising a first state counter and a second state counter, wherein: the control unit resets the first state counter and starts the first state counter to count according to the fixed clock period when a time sequence state of the signal detected by the sensor unit represents that the paper currency appears and when a count value of the second state counter is 0 or reaches or exceeds a preset threshold; the control unit adjusts a pointer for recording the paper currency information in the storage unit to point to a next storage location of the paper currency information when a count value of the first state counter reaches or exceeds the preset threshold; the control unit resets the second state counter and starts the second state counter to count according to the fixed clock period when the time sequence state of the signal detected by the sensor unit represents that the paper currency disappears and the count value of the first state counter is 0 or reaches or exceeds the preset threshold; the control unit controls the storage unit to store the acquired paper currency information into the storage location pointed by the pointer when the count value of the second state counter reaches or exceeds the preset threshold.