Research And Implementation On Key Technology Of Cash Counter

As the China society's rapid development, paper currency plays an important role in our market-economy. More and more spurious ones follow, too. The level of making false paper currency also improves. Some of the counterfeit paper currency made by modern technology can hardly identified. The cash counter need to be improved. Also the government requests the paper currency in use to maintain a certain degree of quality.Firstly, a cash counter is designed and the identify methods are analyzed. After analyze the Anti-counterfeiting techniques of paper currency, we select infrared transmission technology, fluorescence response technology, safe-line technology and magnetism distributing to identify counterfeit paper currency. The sensors are selected. Hardware and software of control system is designed based on single chip computer, realize the functions of cash count and cash check. We use the machine been designed to collect some infrared transmission data of counterfeit paper currency that is difficult to recognize. After analyze the collected data of infrared transmission, the dividing line between real RMB and counterfeit RMB is founded. It makes the system works effectively.As the paper currency in use has to be at certain degree of quality, the graph recognizes technology is inducted. There are two kinds of paper currency need to be callback, the broken ones and the old ones. To identify these two kinds of paper currency, use histogram and threshold image segmentation to analyze the image of these paper currencies. An effective way is discovered by find the character of processed image.