1、 单片机在电力系统中的应用设计单片机在电力系统中的应用设计 课题名称:课题名称: 多用户电子式单相电能表的设计与调试 姓姓 名:名: 学学 号:号: 班班 级:级:电气工程及其自动化 电话:电话: 2013 年年 6 月月 I 摘要摘要 本文主要涉及一个多用户电子式单相电能表,以C8051F360单片机为核心, 具有电能变换、LED显示、掉电存储、按键清零等功能模块,通过对用户供电电 压和电流实时采样,并采用AD7755,对采样电压电流信号进行处理并相乘转换成 与电能成正比的脉冲输出,再经过单片机和LED显示器实现对8用户的用电情况进 行集中检测、循环显示、掉电存储等功能。各户的用电量可以就地
2、读取,有效地 提高了电能计量的准确性,而且整机电路简单,可靠性高,另外在多用户电子式 电能表的前面有6位LED数码管,第一位为分户号,后五位为分户用电量,所显示 的用电量与分户号相对应。设计中采用了查找资料、protel画原理图、软件编程 调试等方法,最终实现了在数码管上8用户电量集中循环显示的功能。 关键词关键词:8 用户电能表;AD7755;C8051F360 II ABSTRACT This paper mainly involves more than a user electronic single-phase watt-hour meter, to C8051F360 microc
3、ontroller as the core, with power transformation, the LED display, power lost storage, buttons and reset function modules, through user power supply voltage and current real-time sampling, and the use of a special electric energy meter integrated circuits, the sampled voltage current signal processi
4、ng multiplication convert to electric proportional to the pulse output, and by the counter and LED display to realize the power of the users are 8 concentrated check, circulation, the display of power lost storage etc. Function. Each of the electricity consumption can read in situ, effectively improve the accuracy of electric power measure, and the circuit is simple, high reliability, high in many other users of the electrical meter in front of six LED digital tube, th