基于单片机的电子式电能表设计与讨论摘要 随着经济的迅速进展，用电量日益增加，为电网的稳定运行带来了诸多不良因素。国家实行多费率用电政策，以消峰填谷，平衡用电。复费率电能表己经大规模取代了单一费率电能表。随着单片机技术的日益进展，以单片机为主控芯片的电子式电能表的生产已成规模。但是价格低廉、运行稳定、可靠性高、抗干扰能力强的电子式电能表还有待开发。论文在对电能计量和数字信号处理理论讨论的基础上，以美国 ADI 公司生产的 ADE7755 为电能计量芯片，以 89C52 为主要控制芯片，利用单片机技术，设计开发了一款单相复费率智能电子式电能表。硬件外围电路采纳模块化设计。其中电压电流采样模块实现了将电网中的不可直接测量的大电压大电流转变成为可以用来处理测量的小电压小电流。电源模块为整个智能电表提供了稳定的电源。数据存储模块，红外通信模块和 RS485 通信模块的设计完成了电能信息的及时存储和交换。显示控制模块为用户提供了清楚，实时的电量信息。软件分为启动前的动态自检程序，计量电量的电能脉冲采集程序，数据信息处理和交换的数据存储程序，通讯中断子程序。在单片机的核心控制下，实现了电子式电能表电能分时段计量、数据通信等功能。关键词 电子式电能表；ADE7755；电能计量；信号处理The design and research of electronic watt-hour meter based on single chipAbstract With the development of economy and the increase of the electrical quantity, the running of the electric fence is threatened heavily. The government of china has adopted the policy of different prices of the electrical power, in order to keep balance of the electrical quantity consumption. Multi-rate watt-hour meter has taken the position of the single-rate watt-hour meter widely. With the development of single-chip technology, the research of electronic watt-hour meter is produced in a huge range. But, the low-price watt-hour meter which runs stably and has strong ability to resist interference still need to be designed.The paper is based on the research of electric energy measurement theory and digital signal processing...
