毕业论文三相智能电表的设计论文报告.doc

中文摘要 随着我国经济的飞速发展，电能消耗日益增加，电能成为现代社会国民经济和人民生活的重要保障。本文所设计的新型多功能电子式电能表除了提高计量精确度外还实现了分时计量、对异常情况进行实时监控并记录事件等功能；可提高电能的合理利用，为用户提供公正、公平的用电环境。 论文首先综述了多功能电子式电能表的发展现状及电能测量的基本原理，然后给出了系统的设计目标和总体方案，并按功能进行了各个硬件电路单元的设计，包括电源单元、计量单元、功能管理单元、显示单元、通信接口单元等。在软件设计方面，采用模块化软件设计方法实现了有功和无功的能量分时计量、RS485通讯、红外通讯、按键显示、异常检测及记录等功能。文中对三相电能表的抗干扰设计也有很详细的介绍。 本三相多功能电子式电能表具有运行稳定、可靠性高、通用性好和抗干扰能力强等优点，适应电表市场的需求。 关键词 电能计量 多功能电子式电能表 复费率 ATT7022B 时钟芯片 Title The design of the three-phase multi-function meter Abstract With the rapid development of economy of our country and gradual increment of power onsumption, electrical energy becomes the significant guarantee of national economy and people’s life in modern society. Late-model polarity formula multifunction watt-hour meter, which designed in this paper, improves the measuring accuracy and realizes functions of time-sharing measurement real-time monitor exceptional situation and take event records and so on. This will improve the completely utilization of electrical energy, prevents happening of using electricity illegally, and provides fair and impartial environment of using electricity. At first, this paper summarizes the present developing state of multi-function electronic watt-hour meter and the basic theory of energy measurement, after that, it put out the design objection and whole frame of this metering System. And the circuit design of each unit with the function divided, including power unit, measure unit, communication unit etc .The soft design of the system is the priority of this paper, utilize modularization method to realize active power, reactive power, RS485 communication, infrared communication, keyboard and display, anomaly detection, electricity reading meter and so on. The EMC design and meter adjust method have also been discussed. This Late-model multi-function electronic watt-hour meter has the excellence of run stability, high reliability, good commonality and strong ability of anti-jamming,