Financial self-service device, banknote recognition module thereof and recognition method therefor

摘要

A banknote recognition module and a recognition method. The recognition module comprises a detection unit for real-time detection and control of a banknote moving state, wherein the monitoring unit comprises at least one group of through-beam sensors, and the group of the through-beam sensors comprises a first sensor and two second sensors, the first sensor whereof is arranged on a midline of a banknote transmission channel, and the two second sensors are arranged at the upstream position of the banknote moving direction relative to the first sensor and are symmetrically distributed on the two sides of the midline of the banknote transmission channel. In the banknote recognition method for the banknote recognition module: the condition for judging whether a start signal of an image data acquisition unit is effective is whether a banknote-triggered insertion event is detected by the first sensor; and the condition for judging whether an end signal of the acquisition unit is effective is whether a banknote-exit completion event is detected by three through-beam sensors. This ensures that a banknote having holes does not cause a false insertion/exit event and allows for the avoidance of situations in which a same banknote causes more than one start and trigger event.