基于mps430电能表原理设计.docVIP

毕业设计 基于mps430电能表的原理设计 摘 要 电能是现代社会中国民经济和人民生活的重要保障，随着社会的快速发展往往导致电能的供应与使用之间产生矛盾。为了解决这一矛盾，电能计量的分时计费方式可以通过调节人们的用电行为，对提高电能利用的合理性和缓解电力供需矛盾具有重要价值。但是传统的机电式电能表无法执行分时计量和分时计费的功能，因此基于单片机技术设计的新型数字电表是实现新型电能管理方式的前提。 本文首先介绍了电能表发展的历程以及现状，阐述了各种抄表计费方式并讨论了各自的优缺点，介绍了电能表技术发展的未来趋势。 然后论述了网络电能表的目标功能，对比了国内外各种系统结构设计方案优缺点，确定本课题中电能表的系统结构设计方案。针对功能的需要，选用了TI公司的MSP430E427为MCU设计网络电能表的检测和控制系统，简化了电能表的电路设计，提升了系统的处理能力：数据采集部分采用二相电能计量专用芯片ADE77_58，以提高电能表的精度：点阵LCD模块的使用，则提供了友好的人机交互界面：在分析目前常用的系统网络架构和嵌入式接入方案的优缺点的基础上确定了电能表的网络架构和嵌入式接入方案，运用MC39i无线GPRS通讯模块，嵌入TC P/IP协议栈，实现电能量参数的远程传输：对网络电能表进行校准，确保了电能表的精度。 关键词：　ADE7758 MSP430FG4619 液晶显示GPRS 通讯MC39i Abstract The electric energy is a guarantee to national economy and daily life in modern society. With the fast development of the society， contradiction between the demand and production of electrical energy occurs. Time-scheduled tariff system， that changes users behavior in energy consuming and rationalizes the electrical energy utilization， is an effective and valuable measure to solve this problem. For the energy measurement the traditional mechanical electricity meter no longer can meet the requirements of this new tariff system， and microcontroller-based digital E-meter becomes the prerequisite and backbone of this tariff system. The paper first introduced energy meter developments course as well as the present　situation， and elaborated each kind way of energy meter reading and discussed therespective advantages and disadvantages. Briefed the future tendency of the energy meter technological development. Then the topic elaborated the network energy meters goal function， compared to the advantages and disadvantages of various system constructions design proposal at home and abroad to determine the issue of the energy meter constructions designAccording to need of function， TIs MSP430 is selected as energy meters MCU and design energy meters testing and control system to simplify the design of energy meters circuit and improve the systems handling