基于單片機(jī)的溫度控制器的設(shè)計(jì)與實(shí)現(xiàn)

電子信息工程論文編號(hào):DZXX192  論文字?jǐn)?shù):10752,頁(yè)數(shù):32

目錄

摘要 I
ABSTRACT II
第1章 引言 1
1.1 背景 1
1.2 研究?jī)?nèi)容 2
第2章 溫度控制器的分析和設(shè)計(jì)方案 3
2.1 溫度傳感器 3
2.2 單片機(jī)的選擇 5
2.3 總體方案 5
第3章 硬件電路設(shè)計(jì)與介紹 6
3.1 DS18B20溫度傳感電路 6
3.1.1 DS18B20測(cè)溫原理 6
3.1.2 DS18B20的工作過(guò)程及時(shí)序 7
3.1.3 本系統(tǒng)溫度傳感電路 9
3.2 AT89S51單片機(jī)核心控制器 10
3.3 動(dòng)態(tài)顯示連接電路 11
3.4 電源電路 12
3.5 溫度警示電路 13
3.6 復(fù)位電路 13
第4章 系統(tǒng)軟件設(shè)計(jì) 14
4.1 主程序流程圖 14
4.2  DS18B20的工作流程圖 14
4.3 讀出溫度子程序 16
4.4 溫度轉(zhuǎn)換命令子程序 16
4.5 計(jì)算溫度子程序 16
4.6 顯示程序流程圖 16
第5章 系統(tǒng)測(cè)試 19
5.1硬件的調(diào)試 19
5.2軟件的調(diào)試 19
5.3 溫度調(diào)試 20
第6章 結(jié)束語(yǔ) 21
致謝 22
參考文獻(xiàn) 23
附錄1 系統(tǒng)總電路圖 24
附錄2 實(shí)物圖 25
附錄3 源代碼 26

摘要

 隨著電子技術(shù)的發(fā)展，時(shí)間溫度顯示作為顯示的基本技術(shù)在電子設(shè)計(jì)中顯得更加舉足輕重。
 本系統(tǒng)的設(shè)計(jì)電路以AT89S51單片機(jī)系統(tǒng)作為控制器，主要有數(shù)碼管顯示電路、功能控制電路、傳感器電路、鍵盤電路4部分。能測(cè)量當(dāng)前環(huán)境的溫度，顯示當(dāng)前時(shí)間。吸收了硬件軟件化的思想，大部分功能通過(guò)軟件來(lái)實(shí)現(xiàn)，既保證了電路簡(jiǎn)單化，也使得系統(tǒng)的穩(wěn)定性得到了很大提高。
 而本設(shè)計(jì)選擇DS18B20作為溫度傳感器，由于其具有單總線的獨(dú)特優(yōu)點(diǎn)，可以使用戶輕松地組建起傳感器網(wǎng)絡(luò)。它將溫度信號(hào)直接轉(zhuǎn)化為數(shù)字信號(hào)，實(shí)現(xiàn)了與單片機(jī)的直接接口，該儀器電路簡(jiǎn)單、功能可靠、測(cè)量效率高很好的彌補(bǔ)了傳統(tǒng)溫度測(cè)量方法的不足。所以我相信該系統(tǒng)在環(huán)境控制等多種場(chǎng)合具有較好的應(yīng)用前景。
關(guān)鍵詞：?jiǎn)纹瑱C(jī)，DS18B20，溫度傳感器,溫度測(cè)量

ABSTRACT

 With the development of electronic technology，the availability of display functions becomes a standard of buying electronic production, time and temperature display as the basic display technology in the electronic design appears to be more important.
 Taking the single-chip AT89S51 as a controller, the designed circuit of this system mainly includes four parts which are the digital tube displaying circuit, the functional controlling circuit, the sensor circuit and the keyboard circuit. It can measure the current environment temperature and display the current time. To absorb the ideas of hardware are transforming software, most of the functions achieved through software, not only to guarantee the circuit simplistic, but also to improve the stability of the system.
 This system chooses the DS18B20 to be the temperature sensor. It can also make the net simple and reliable with its special 1-wire interface. In DS18B20, the temperature signals are converted into digital signals directly, and interface with a MCU, so that the signal conditioning circuit could be omitted. This instrument features simple circuit, reliable functions, and high2efficiency measurement. It covers the shortages of the traditional temperature measurement. Thus, I believe that the system has a good application prospect in these circumstances such as environmental mastery.

 Keywords: Single Chip, DS18B20,Temperature Sensor ,Measure-Temperature