BANK NOTE PROCESSING SYSTEM HAVING A COMBINED FLORESCENCE AND PHOSPHORESCENCE DETECTION SYSTEM

摘要

A bank note processing system having a combined florescence and phosphorescence detection system. The bank note processing system includes a detection module which has a detector housing having a first compartment and a second compartment separated by a light baffle. An illumination source and a first sensor module are disposed in the first compartment of the detector housing and a second sensor module is disposed in the second compartment of the detector housing. The illumination source directs light to the bank note and the first sensor module measures the bank note's florescence at a first point in time. The second sensor module measures the bank note's phosphorescence at a second point in time and the detection module determines whether the bank note is a counterfeit bank note using the measured florescence and the measured phosphorescence.

主权项

1. A method of identifying a counterfeit bank note comprising:
directing a bank note to a detection module along a transport path; directing light to the bank note from a strobe lamp; measuring a florescence from the bank note in response to the light from the strobe lamp using a first sensor module at a first point in time; strobing off the strobe lamp; measuring, while the strobe lamp is off, phosphorescence measurements from the bank note in response to the light from the illumination source using a second sensor module at multiple predetermined points in time after the florescence was measured; determining if the bank note is a counterfeit bank note by analyzing the florescence and the multiple phosphorescence measurements.