基于单片机的数字电能表设计

基于单片机的数字电能表设计摘要随着电力需求的急骤上升，电能表作为计量电量的主要工具，设计出功能更多、准确度更高的电能表对于节约用电有极其重要的意义。本文采用单片机作为主控芯片，该电能表具有精度高、准确等优点，有很好的实用开发价值。数字电能表的诞生打破了传统电子测量仪器的模式和格局。它显示清晰直观、读数准确，采用了先进的数显技术，大大地减少了因人为因素所造成的测量误差事件。数字电能表是把连续的模拟量转换成不连续、离散的数字形式，并加以显示的仪表。数字电能表把电子技术、计算技术、自动化技术的成果与精密电测量技术密切的结合在一起，成为仪器、仪表领域中独立而完整的一个分支，数字电能表标志着电子仪器领域的一场革命，也开创了现代电子测量技术的先河。本设计以单片机为开发平台，控制系统采用AT89C51单片机，AD转换采用ADC0832。系统除能确保实现要求的功能外，还可以方便进行8路其它AD转换量的测量、远程测量结果传送等扩展功能。简易数字电能测量电路由AD转换、数据处理、显示控制等组成。关键词：数字电能表；AT89C51:硬件合成ABSTRACTWith the sudden rise of power demand,electricity meters,as the main tool tomeasure electricity,it is of great significance to design electricity meters with morefunctions and higher accuracy to save electricity consumption.This paper uses the maincontrol chip,the electricity meter has the advantages of high accuracy,accuracy and soon,has a good practical development value.The birth of digital electricity meter broke the mode and pattern of traditionalelectronic measurement instruments.It shows clear and intuitive,accurate reading,adopts the advanced digital display technology,and greatly reduces the measurementerror events caused by human factors.A Digital electricity meter is an instrument thattransforms a continuous analog quantity into a discontinuous,discrete digital form anddisplays it.Digital electric energy meters closely combine the achievements of electronictechnology,computing technology and automation technology with precision electricalmeasurement technology,and become an independent and complete branch in the fieldof instruments and instruments.Digital electricity meters mark a revolution in the fieldof electronic instruments,and also creates a precedent of modern electronicmeasurement technology.This design takes microcontroller as the development platform,AT89C51 forcontrol system microcontroller and ADC0832 for A D conversion.In addition toensuring the realization of the required functions,the system can also facilitate 8 otherA /D conversion amount measurement,remote measurement results transmission andother extended functions.Simple digital electric power measurement circuit is composedof A/D conversion,data processing,display control,etc.Keywords:Digital electricity meter;AT89C51;hardware synthesis目录摘要..........ABSTRACT第一章绪论】.11.1.选题的背景与意义1.2.电能表的研究现状与发展趋势1.3.主要研究内容…。第二章系统总体设计方案32.1.电能表的分类.….32.2.电能测量的原理…。.32.3.数字电能表的工作原理2.4.硬件总体设计方案.5第三章系统硬件设计.63.1.AT89C51单片机系统.63.1.1.主要参数.63.1.2.引脚功能说明.73.1.3.单片机最小系统.73.2.ADC0832芯片.93.3.电源模块3.4.实时时钟电路模块.123.5.显示模块133.6.存储模块....143.7.电流电压采样模块.16第四章系统软件设计…174.1.软件介绍.174.2.系统软件方框图17总结….19谢辞20参考文献.21附录22么