How to use the infrared detector to verify bill authenticity?
We will explain this with led infrared. the bank staff has to painstakingly recount all of the bills and notes by photoelectric switch sensor of money counter. infrared penetration of the working principle is used a fixed wavelength of invisible infrared light, They penetrate the notes, receives the remainder of the ir led strip‘ light is carries on the analysis in view of the characteristics of the banknote paper and cover printing ink by the opposite receiver device.Then compare and contrast them with standard of value. The advantage of banknote is relatively strong,higher density and higher with gravure printing ink thickness,and thus the ability to absorb infrared signals to identify strong genuine banknotes.

There are different infrared signal of absorptive capacity.

according to this principle can be achieved forgeries. It should be noted that the same color and thickness of the ink will cause the difference of infrared penetration. Therefore, the need for mathematical calculations and comparative analysis of the signal detected by the infrared penetration.