Design of coin identification system based on ARM
Wang Jua · Modern Electronics Technique · 2014
In order to reduce the false coin circulation,a design of coin identification system based on ARM is presented in this paper. This is a composite testing system,in which capacitive sensor,electromagnetic sensor,eddy current sensor and optical sensor are used,to detect the material,thickness and diameter of coins. The signal acquisition circuit system is based on AD9480 to realize high-speed and efficient acquisition and processing of coin features. The processed feature data of coins is sent to STM32 to compare the data with true coin values to identify the detected coins. This system has a great market prospect.