文档介绍：毕业论文：基于单片机的数字电能表设计|基于单片机的数字电能表毕业设计
**大学远程教育
本科生毕业论文（设计）
中文
题目 基于单片机的数字电能表设计 学生姓名 *** 专业 电气工程及其自动化 层次年级 专升本 学号 JD********** 指导教师 *** 职称 讲师 学****中心**市教师进修学校**学****中心[44] 成绩
20XX年4月13日 摘 要 随着中国经济的腾飞，人民生活水平的提高，对电能的需求日益增长，之前传统单一的费率政策已经不能满足需求，电网开始采用新的用电政策，用来平衡高峰用电和低谷用电，保证电网的安全稳定运行。这就对电能表提出了新的要求，如今单片机技术已经广泛应用在各个领域，其有着价格低廉、技术成熟、运行安全稳定等优点，如今单片机控制的电能表逐步取代了传统的电能表。
根据
题目要求，本设计采用STC单片机作为主控芯片，对线路实行单相测量，能实现实时测量电流、电压有效值和瞬时功率。电能表带有报警功能，可自行设置报警阈值，超过阈值蜂鸣器报警，从而保护电路。电能表采用模块化设计，采集部分分为电流采集模块，电压采集模块，功率因素采集模块，通过单片机自带的A/D转换器转换成可以处理的数字信号，经过单片机内部程序运算实现对电力参数的实时测量显示功能；单片机最小系统集成了LCD显示模块，通过LCD可实时查看电力参数；电源模块为双路输出，为单片机模块与采集模块分别提供5V与+-12V的稳定直流。软部分带有设置中断，可随时设置报警值，并根据采集数据转换成可读电力参数。
关键字：单片机；电能表；电力参数；实时显示；报警 Abstract With rapid development of Chinese economy, people"s living standards improve and the demand for energy growing day by
traditional single rate policy has been unable to meet the
this case ,the grid started the new electricity policy to balance peak power and low electricity, guarantee the safe and stable operation of power
raise a new demand for electric energy meter ,now SCM technology has been widely used in various
has the advantages of low price, mature technology , safe and stable, and now the electric energy meter which controlled by single chip microputer gradually replaced the traditional electric energy
to the requirements of the topic, this design uses STC microcontroller as the main control chip, the circuit implementation of single phase measurement, can achieve real-time measurement of current, voltage effective value and instantaneous
electric energy meter has the function of alarming, which can set the alarm threshold, if this threshold is exceeded, super buzzer will alarm, so that can protect the
energy meter based on modular design, collecting part is divided into current collecting module, voltage acquisition module, and the power factor of