1、 内蒙古科技大学 本科生毕业设计说明书（毕业论文） 题 目： 智能预付费电能表设计 学生姓名：李改丽 学 号： 0705106430 专 业：自动化 班 级：自动化 07-4 指导教师：王新春内蒙古科技大学毕业设计说明书（毕业论文） I 智能预付费电能表设计 摘要 在世界能源匮乏和环境污染严重的今天，电能的节约与高效利用，对人类社会的发展具有重要意义。用电制度的不断改革，计量仪表也随之向多功能的方向发展。当电力负荷高峰和低谷差别过大时，若不能充分利 用发电设备和供电设备的容量，则会使电网运行效率大打折扣。为了平拟电网负荷曲线，提高电网负荷率，可以针对用户实施用电引导分流，使其避开用电高峰期，并
2、鼓励用户低谷期用电，利用经济杠杆，在用电高峰期和低谷期按照不同的费率收取电费不失为一种尝试，有利于消峰填谷，改善用电质量，提高综合经济效益。 预付费技术，是我国近几年形成的新型技术领域，旨在解决公共事业领域收费难 (特别是在人口流动频繁的地区 )的问题。预付费控制技术已经产品化，并形成了一个新兴产业。预付费电能表可以将供电部门的收费方式由过去的上门查表收费改变为由用户 主动缴费，免去了供电部门抄表的繁重工作，而且电能表由单片机智能控制，大大减轻了供电管理人员的工作量，它的采用将在很大程度上解决长期困扰我国供电部门的收费难问题。在预付费电能表中，购电介质有多种， IC 卡是使用最为普遍的一种。
3、IC 卡具有读写方便、可靠性高、安全性好、易于实现智能控制等突出优点，使用 IC 卡预付费电能表可以获得可观的社会效益及经济效益。 智能预付费电能表的详细设计是本文的重点。智能预付费电能表以单片机 AT89S52和 ADE7755 为核心，采用模块化设计。该电表不仅具有电能计量、费率管理等功能，还可以 分时段计量用户的电能使用量，达到避峰填谷的目的，提高了电网的利用率，且体积小，功耗低。 关键词： 电能表；预付费； IC 卡；电能计量 内蒙古科技大学毕业设计说明书（毕业论文） II Smart Prepaid Energy Meter Abstract In the world energy
4、shortage and environmental pollution is serious today, energy saving and efficient use of human and social development of great significance. Continuing reform of power system, measuring instruments also will be the direction of the multi-functional. When the load is too large differences between pe
5、aks and troughs, if not full use of power equipment and power supply equipment capacity, the efficiency of power grid operation will be greatly reduced. In order to level the load curve of the proposed network to improve the power grid load factor, can be diverted for the user to guide the implement
6、ation of electricity, so avoid the peak periods and encourage users of low power consumption, the use of economic levers, the peaks and troughs of power According to different tariff rates charged may well be an attempt to favor the peak and valley, to improve power quality and increase overall econ
7、omic efficiency. Therefore, the design can accurately measure the power of a state and easy management of the power measurement device is very important. Prepaid technology, is formed in recent years and new technology, designed to address areas of public utility charges is difficult (especially in
8、the area of intense population movement) problems. Control technology has been pre-paid product of, and formed a new industry. Prepayment meter charges for the electricity sector can be way of look-up table from the previous site the user take the initiative to pay fees to change the ground, elimina
9、ting the need for meter reading of the heavy workload of the electricity sector, and the energy meter by the MCU intelligent control, greatly reducing the supply management staff workload, it will be largely used to solve the electricity sector in China have long plagued the charges hard.In the prep
10、ayment meter, the purchase of electricity a variety of media, IC card is the most widely used one. Easy to read and write IC card, high reliability, security, and easy to highlight the advantages of intelligent control, the use of IC card prepayment meter may be significant social and economic benef
11、its. Smart prepayment meter is the detailed design of the focus of this article. Smart prepayment meter to the core microcontroller AT89S52 and ADE7755, modular design. Not only has the energy measurement of the meter, the rate management function, users can also be measured at different time periods of electricity usage to achieve the purpose of averting valley and improve the utilization of the grid, and the small size, low power consumption.
