毕业设计（论文）
抗干扰滤波器
喷墨打印机墨水
摘 要
科技的发展带动了社会的发展，城市的公交系统也是社会发展夫人一种体现于是公交系统的更新换代也是在所难免，车载的投币系统经历了多次的发展过程，而的出现将投币器上升到了一个新的高度，投币器必须加入货币识别系统，硬币识别器是一种与投币器结合使用的仪器。使用方便、检测精度高并且有广大的发展前景。 硬币识别器只要识别现在国家发行的一元、五角、一角的硬币。我国目前发行的1元,5角和1角硬币的金属原材料是为造币而专门使用的特殊合金,因此在它通过投币入口进入由电感和电容组成的特定传感器,金属材质和体积的差异对电容量和电感量的影响大小也出现微弱差异,电容量、电感量的变化引起电压的变化;再通过检测电路将信号放大,与设定值进行比较,确定某种硬币种类后,通过数字信号传输到单片机控制电路完成对金属硬币的识别。 止痒沐浴露关键词：电容传感器、电感传感器、检测电路、单片机控制电路。
云朵制造机2007年06月
Abstract
The development of technology led to the development of our society. The city bus system is a social development embodied his wife then transit system upgrades are inevitable. Vehicle coin system has experienced a number of the development process, and the emergence of counterfeit money for coin rose to a new height, coin device must join the monetary identification system for identification of coins is a coin with the combined use of the equipment. Easy to use, high precision and broad development prospects. Clifton coins now identify as long as a national issue, 2.50, 3.10 coins. China currently issued by the dollar to 50 cents and 10 cents coins metal materials for the exclusive use of mints and the special alloy, So it through the entrance into the coin by the inductance and capacitance of specific sensors, The metal material and size differences of capacity and inductance of the size differences have emerged weak, capac
ity, inductance voltage changes caused the change; through the detection of the signal amplification circuit, and setting values, identify certain types of coins, digital signal transmission to the MCU control circuit completion of the identification of metal coins.
多媒体互动教学系统Keywords: Capacitance sensor Inductance Sensor Detection Circuit SCM control circuit
2007.06
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