Infrared penetration detection of money counter

The working principle of infrared penetration is to use RMB paper which is stronger and denser and the ink thickness printed with gravure printing technology is higher, so the infrared signal absorption ability is stronger to distinguish the authenticity of banknotes. There is a certain difference between the paper characteristics of RMB and counterfeit banknotes. When infrared signals are used for penetration detection of banknotes, their ability to absorb infrared signals will be different. Using this principle, counterfeit identification can be achieved. It should be noted that the color and thickness of the ink will also cause differences in infrared penetration. Therefore, it is necessary to perform mathematical operations and comparative analysis on the signals of infrared penetration detection.