Banknote counter (Cash registers) is a kind of automatic counting money mechatronics device, generally with counterfeit currency recognition, counting and jigan money machine. Due to the large amount of cash flow, the cashier desk cash processing work is heavy, the counting machine has become indispensable equipment. With the development of printing technology, photocopying technology and electronic scanning technology, the manufacturing level of counterfeit banknotes is getting higher and higher, and the discriminating performance of the counting machine must be constantly improved.