基于PIC16F886的高速检伪投币系统

Rapid-response device for identifying counterfeit coins based on PIC16F886

为了解决市面上由于货币流动多大而造成无法识别假币的问题,将PIC16F系列单片机结合电涡流传感器技术应用到真假币识别系统设计中。分析并指出了使用PIC16F886单片机作为系统的核心对通过的真币和假币给予相应的数字处理信号,提出了结构简易、价格成本优势明显、检测速度快、采集数据精度高的设计方案;在对同类产品进行比较的基础上,对分辨准确率和识别速率进行了评价。实验结果表明,该系统的真币正确辨识率达100%,假币正确辨识率平均在95%以上,硬币检测速度高达900枚/min以上;并且可以通过调节灵敏旋钮自主改变硬币识别的精度范围,可灵活地应用于公交投币箱、自动售货机、地铁售票机、投币电话、娱乐投币机等不同的投币场所。

Bacause of unstablity of currency circulation in the market, it is difficult for people to dinstinguish fake money from true money. In order to solve this problem, PIC16F SCM combined with eddy current sensor technology was adopted on the system of identifying counterfeit coins. The device was designed to produce the different signal according to the suitation of throughing the eddy-current sensor through using the system of PIC16F886 SCM. The design of the project is not complexity. Indeed, it shows an optimum expression on speed, precision and price comparing with other similar products. Several tests and experiments illustrate an ideal result with about 100% identifying real coins, 95% counterfeit coins and 900 pieces of coins checking per minute. At the same time, its diverse range of figuration can be tuned to apply in different public places, including bus, automatic seller machine, self tickets machine on subway, payphone, entertainment places, etc..