基于单片机的数字电能表的设计原理

Design of Digital Electric Energy Meter

本次设计的主要内容是了解数字电能表基本原理,并设计出一个基于STC89C51单片机的数字电能表。设计的主要思路与内容如下:采用STC89C51单片机完成电能表分时与计费功能,用电流互感器与电阻分压来实现电流电压的采样;收集到的模拟的数据再用ADC0832就可以让单片机读懂反馈回来的数字信息;最后将得到的结果信息显示在LCD1602显示屏上。

The main content of this design is to understand the basic principle of digital energy meter, and design a digital electric energy meter based on STC89C51 microcontroller. The main ideas and contents of the design are as follows: STC89C51 single-chip microcomputer is used to complete the time-sharing and billing function of the energy meter. The current transformer and the resistor divider are used to realize the sampling of current and voltage. The collected analog data can be read by the ADC0832. Understand the digital information returned;finally, the resulting information is displayed on the LCD1602 display.