大学毕业设计---基于单片机的功率计的设计

摘要随着时代的快速进展和技术的不断革新，特别进入 21 世纪以来，互联网技术和电子信息技术在我国有质的飞越。人类的生产和生活也已经跨入崭新的数字化时代。在众多的工业仪器仪表中，功率表始终在其中占据着举足轻重的地位,它被广泛的应用于电工以及电子技术等诸多领域。本文主要应用 51 系列单片机作为核心，首先进行电压和电流信号的采样，其次经过 A/D 转换电路得到对应的数字信号，将该数字信号送至已经编写好程序的单片机进行计算和处理，将输入的电压、电流和处理后的功率值显示在 LCD 液晶屏上。其中单片机部分的设计是整个系统中最重要的部分，其工作流程是完成整体电路的测量、信号转换、计算、输出显示，同时还可单独显示被测量的电压和电流值，以及本次设计中需要测量电子元器件的功率值。关键词：51 单片机 A/D 转换电路 电压/流采样 LCD1602 功率计ABSTRACTWith the rapid development of the times and innovation of the technology,especially since entering the 21st century,Internet technology and electronic information technology in our country has to fly over.Human’s production and life has entered the new digital era.In the numerous industrial instrumentation,power meter always occupies a pivotal position in it.It is widely used in electrical and electronic technology,and many other fields.This paper is mainly based on the single chip microcomputer as the core, with the appropriate external circuitry, by sampling the voltage and current, through the digital analog conversion, the analog signal into digital signal into the microcontroller, through the program, and then through the 1602 LCD display current, voltage to be measured and the power of the original. SCM is the core part of the whole design is the design of the whole circuit, measurement, conversion, display and output can be realized only on current and voltage measurements show, has been measured on electronic devices power.And measure the power value of the electronic compone...