公交车投币箱硬币鉴伪及币值识别系统设计  

Design of Coin Recognition System of Bus Coin Box

作　　者：赵以强[1] 

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255049

出　　处：《农业装备与车辆工程》2009年第2期34-35,44,共3页Agricultural Equipment & Vehicle Engineering

摘　　要：以硬币材质作为硬币检测的特征值,根据差动变压器原理,设计制成了硬币检测传感器,其最大优点是受温度等环境因素影响小。采用小型系列20脚封装的单片机和支持I2C总线数据传送协议的串行存储器,整个系统体积小、成本低。试验表明,硬币币值辨识正确率达100%,假币识别正确率大于97%,硬币检测速度达每分钟百枚以上。Using the reluctivity of coin as the main detecting parameter, the detecting sensor of coin based on the differential transformer was developed, which has the merit of being not influenced by the environmental factors such as temperature. The whole system based on the 20-pin single-chip microcontroller P87LPC764 and the 2-wire serial interface EEPROM 24WC02 is compact and inexpensive. The result shows that the coin classifying preciseness is 100% and fake coin identifying preciseness is 97%.

关 键 词：投币箱 硬币检测 差动变压器 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]