【正文】 lso can display time,temperature and so on .This design pletes the hardware and software of the electronic nanny Machine , debugges a part of functions on the board and realizes the basic function of the electronic nanny Machine. The design uses Atmega128 as a core,controls home appliances from time to time through the work of the relay, pletes the basic function of clock / calendar through using the DS1302 realtime clock,measures ambient temperature by using temperature sensor DS18B20, and uses four LED digital tube for displaying . The machine can be applied to the life and work, can also be modified to improve performance,and can be added new functions so that it brings more convenience to the people39。本設(shè)計以 Atmega128 單片機為核心，通過繼電器控制家用電器定時工作，利用 DS1302 實時時鐘日歷芯片完成時鐘 /日歷的基本功能，同時利用 DS18B20 溫度傳感器測量環(huán)境溫度，并通過 4 位 LED 數(shù)碼管進行時間和溫度的顯示。目前市場上銷售的保姆機多為機械式，且功能單一，只能進行家用電器通斷電的定時控制。 本文利用電子技術(shù)設(shè)計的保姆機具有多功能性。本設(shè)計完成了電子保姆機硬件和軟件的設(shè)計，并在開發(fā)板上對部分功能進行了調(diào)試，實現(xiàn)了電子保姆機的基本功能。s life and work. Key Word: nanny machine； singleship； temperature sensor； relay； 內(nèi)蒙古科技大學畢業(yè)設(shè)計說明書（畢業(yè)論文） III 目錄 摘 要 .........................................................................................................................................I 第一章 引 言 ............................................................................................................................ 1 多功能 電子保姆機研究的背景和意義 ..................................................................... 1 電子保姆機的功能 ..................................................................................................... 2 第二章 電子保姆機設(shè)計方案分析 .......................................................................................... 3 FPGA 設(shè)計方案 ........................................................................................................... 3 NE555 時基電路設(shè)計方案 ......................................................................................... 3 單片機設(shè)計方案 ......................................................................................................... 4 第三章 基于單片機的電子保姆機硬件設(shè)計 .......................................................................... 6 單片機的選擇 ............................................................................................................. 7 AVR 單片機簡介 ............................................................................................. 7 ATMEGA128 特點 .......................................................................................... 7 時鐘日歷芯片 DS1302 ............................................................................................... 9 DS1302 簡介 ................................................................................................... 9 DS1302 引腳說明 ......................................................................................... 10 DS1302 控制字和讀寫時序說明 ................................................................. 10 DS1302 片內(nèi)寄存器 ..................................................................................... 12 環(huán)境溫度傳感器選擇 ................................................................................................ 13 常用溫度傳感器比較 ................................................................................... 13 DS18B20 簡介 ............................................................................................... 14 DS18B20 內(nèi)部結(jié)構(gòu) ....................................................................................... 15 電子保姆機硬件電路設(shè)計 ....................................................................................... 17 時鐘電路設(shè)計 ............................................................................................... 17 環(huán)境溫度采集電路設(shè)計 ............................................................................... 17 顯示電路 ....................................................................................................... 17 按鍵電路設(shè)計 ............................................................................................... 19 鬧鈴電路設(shè)計 ............................................................................................... 20 繼 電器控制電路設(shè)計 ................................................................................... 21 溫度報警電路設(shè)計 ....................................................................................... 22 內(nèi)蒙古科技大學畢業(yè)設(shè)計說明書（畢業(yè)論文） IV 第四章 電子保姆機軟件設(shè)計 ................................................................................................ 23 主程序設(shè)計 ............................................................................................................... 23 子程序設(shè)計 ............................................................................................................... 23 實時時鐘日歷子程序設(shè)計 .......................................................................... 23 環(huán)境溫度采集子程序設(shè)計 .......................................................................... 24 顯示子程序設(shè)計 .......................................................................................... 27 鬧鈴控制子程序設(shè)計 .................................................................................. 28 繼電器子程序設(shè)計 ...................................................................................... 28 第五章 系統(tǒng)調(diào)試 .................................................................................................................... 29 硬件調(diào)試 ................................................................................................................... 29 單片機基礎(chǔ)電路調(diào)試 .................................................................................. 29 顯示電路調(diào)試 .............................................................................................. 30 DS1302 電路調(diào)試 ......................................................................................... 33 繼電器控制電路調(diào)試 .................................................................................. 33 DS18B20 電路調(diào)試 ..............................