基于Atmega128与ATT7022的数字式三相电量表设计

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介绍一款基于Atmega128单片机与ATT7022计量芯片为核心的数字式三相电量表设计,从硬件电路及软件设计进行论述。整体电路设计遵循强、弱电分离的原则,集成度高、功能强、成本低、抗干扰能力强、功耗低、测量精度高。所设计的电量表经上电检验具有功率双向计量、计费、保护、通讯、液晶显示,IC卡预付费等多种功能。能满足电能智能化管理及未来家用太阳能发电系统的电能计量要求,具有很好应用前景。

This paper makes an introduction to the design of a digital three-phase power meter based on Atmega128 microcontroller and ATT7022 metering chip,and a discussion is made on its hardware circuit and software design.The overall circuit design of the power meter strictly follows the principle of separating strong and weak currents.The designed power meter has the characteristics of highly integrated,low-cost,high anti-interference ability,low power consumption and high accuracy and has the functions of two-way metering,billing,protection,communication,LCD and IC-card prepaid service,which can meet the requirements on not only intelligent management of power energy but also power metering of future home solar power system,and has a good application ...