【摘要】 详细介绍了在单片机数据采集系统中利用积分电路实现A/D转换的原理以及关键参数的确定方法 ,针对单极性和双极性电源供电两种情况进行了对比分析 ,并给出了实用的电路和相关的软件。另外指出了这种电路的特点和适用场合。更多还原

【Abstract】 This paper introduces the principle of carrying out A/D by integral circuit and the methods of determining the key parameters in microcontroller data acquisition system.The difference between the supply of unipolarity and bipolarity is analyzed, and the practical circuit and the software concerned are given. Meanwhile, I point out the characteristics and the application of this circuit are pointed out.更多还原