基于單片機(jī)控制的數(shù)字溫度計(jì)[畢業(yè)論文]

摘 要
溫度作為一個(gè)常用的物理量在我們的氣場(chǎng)生活中起著十分重要的作用，所以對(duì)溫度計(jì)的設(shè)計(jì)也十分必要。在此設(shè)計(jì)一種智能數(shù)字溫度計(jì)，這種溫度計(jì)有許多優(yōu)點(diǎn)，并且它的應(yīng)用范圍非常廣泛。它通過(guò)利用控制器—AT89C52、溫度傳感器—DS18B20、數(shù)碼管—LED設(shè)計(jì)一個(gè)可以很好的轉(zhuǎn)換溫度值，并且直接顯示溫度值的數(shù)字溫度計(jì)。與傳統(tǒng)的數(shù)字溫度計(jì)相比，具有讀數(shù)方便，測(cè)溫范圍廣，測(cè)溫準(zhǔn)確，其輸出溫度采用數(shù)字顯示的優(yōu)點(diǎn)。
【關(guān)鍵詞】    智能    數(shù)字   溫度計(jì)   AT89C52

Abstract
The temperature took a commonly used physical quantity is playing the extremely vital role in ours gas field life, therefore extremely is also essential to the thermometer design. In this introduced one kind of intelligent numeral thermometer, this kind of thermometer has many merits, and its application scope is extremely widespread. Its key element is: Controller - AT89C52, temperature sensor - DS18B20, nixie tube - LED ,not only therefore this kind of thermometer designs simple and is facile, is cheap, generally speaking this kind of thermometer performance-to-price ratio is very high. Its main principle is uses DS18B20 to be possible the very good transformation temperature value, and demonstrates the temperature value directly, and its performance surpassed traditional the bulb to omit, and the analog switch design. And in addition  AT89C52 volume small also may direct drive LED, and simplified the design difficulty to reduce the cost like this greatly.

 [Key word]  Intelligence   Numeral   Thermometer    AT89C52


目 錄
摘 要 I
Abstract I
目 錄 II
第一章 緒論 1
1.1數(shù)字溫度計(jì)的發(fā)展現(xiàn)狀 1
1.2數(shù)字溫度計(jì)的目的和意義 1
第二章 總體方案 2
2.1數(shù)字溫度計(jì)設(shè)計(jì)方案論證 2
2.2芯片的選擇 3
2.2.1單片機(jī)的選擇 3
2.2.2 溫度傳感器的選擇 3
2.2.3顯示器的選擇 3
第三章 DS18B20數(shù)字溫度計(jì) 5
3.1硬件模塊 5
3.1.1硬件原理圖 5
3.1.2主控制器 5
3.1.3復(fù)位電路 7
3.1.4晶振電路 7
3.1.5報(bào)警電路 8
3.1.6 顯示電路 8
3.1.7鍵盤(pán)電路 9
3.1.8溫度傳感器 10
3.1.9LED顯示器 12
3.2 軟件模塊 13
3.2.1主程序 13
3.2.2溫度轉(zhuǎn)換命令子程序 15
3.2.3讀出溫度子程序 15
3.2.4計(jì)算溫度子程序 16
3.2.5顯示數(shù)據(jù)刷新子程序 16
第四章 結(jié)論 18
4.1 Proteus圖 18
4.2數(shù)字溫度計(jì)的仿真 18
4.3總結(jié) 20
致 謝 21
參考文獻(xiàn) 22
附錄1： 23
源程序 23
附錄2 37
電路原理圖 37