毕业论文 三相电参数测量仪的软件设计

论文题目：三相电参数测量仪的软件设计

专业：测控技术与仪器

本科生：强伟（签名）

指导老师：黄梦涛（签名）

摘要

本系统使用一种电能计量芯片ATT7022C，结合DS1302实时钟芯片及LCD12864液晶模块，通过STC89C54RD+单片机进行控制，具体研究和设计了一款三相电参数测量仪。

相对于传统的三相电参数测量仪，它具有精度高、可靠性强、功能强大及智能化等诸多优点。本测量仪表可以实时、准确测量电压有效值、电流有效值、功率因数、有功功率、无功功率、视在功率、有功电能、无功电能、频率及相角等各项三相电参数。测量参数值可以通过按键控制切换实时显示在液晶屏上。此外，该测量仪表还可以在液晶屏上显示年份、月份、日期、星期、时、分、秒，并且可以随时通过按键设置时间。

研究、设计此类仪表有利于减少企业、工厂及家庭用电浪费，更好的节约资源、保护环境，从而真正实现环境友好型社会。

关键词:三相电参数，测量仪, ATT7022C, STC89C54RD+

研究类型：应用研究

Subject ：Multi-purpose three-phase electrical parameters of instruments

Major ：Measure and control technology and instrument

Name ：Qiang Wei （Signature）

Instructor：Huang Mengtao （Signature）

ABSTRACT

This system using a kind of electric power measure ATT7022C chip, combined with DS1302 real clock chip and LCD12864 LCD module, through the STC89C54RD + MCU control, concrete research and design a three-phase electric parameters measurement instrument.

Compared with the traditional measuring apparatus, the parameters of the three-phase it has high accuracy, reliability, powerful and intelligent, and many other advantages. The measurement instrument can real-time and accurate measuring voltage, current RMS, RMS power factor, active power, reactive power, electricity, power, active and installed reactive power, frequency and phase Angle of the parameters of the three phase. The measuring parameters value can through the button control switch in real-time display on the LCD panel. In addition, the measuring instrument can also be displayed on the LCD panel year, month, date, week, when, minutes and seconds, and can at any time through the keys set a time.

Researching and design such instruments can reduce electricity resource waste of enterprise, factories and family, protect the environment, so as to realize environmental friendly society.

KEY WORDS:three-phase electrical parameters, intelligent instrument, ATT7022C,

STC89C54RD +

THESIS:application research

目录

摘要 ............................................................................................................................................................... I ABSTRACT ................................................................................................................................................... I I 1 绪论 . (1)

1.1 课题研究的目的和意义 (1)

1.2 电参数测量仪的发展状况与趋势 (2)

1.2.1电参数测量仪的发展历程 (2)

1.2.2国内外研究状况 (2)

1.3 本设计的主要任务 (4)

2 系统总体设计 (5)

2.1 系统总体设计 (5)

2.1.1总体结构框图 (5)

2.1.2主要功能 (5)

2.2 系统测量原理 (6)

3 硬件系统设计 (13)

3.1 ATT7022C电能计量芯片 (13)

3.1.1芯片简介 (13)

3.1.2 内部结构 (13)

3.1.3 电能计量芯片ATT7022C的引脚介绍 (14)

3.1.4 外围设计 (16)

3.2 LCD12864液晶模块 (17)

3.2.1 芯片简介 (17)

3.2.2 外围接口 (18)

3.3 4*4矩阵式键盘 (19)

3.3.1 电路原理 (19)

3.3.2 接线图 (19)