溫度檢測控制儀器

電子通信論文編號(hào):TX074        論文字?jǐn)?shù):14360,頁數(shù):50

目 錄

摘要  I
Abstract   II
緒論  1
1  理論基礎(chǔ)及系統(tǒng)要求  2
1.1  引言  2
1.2  系統(tǒng)構(gòu)成  2
1.2.1  系統(tǒng)基本原理   2
1.2.2  系統(tǒng)組成和流程  2
1.3  控制系統(tǒng)任務(wù)   3
2  系統(tǒng)硬件電路  4
2.1  引言  4
2.2  硬件介紹   4
2.2.1  單片機(jī)89C2051   4
2.2.2  數(shù)字溫度傳感器DS18B20簡介  7
2.2.3  譯碼器CD4511   13
2.3  硬件電路設(shè)計(jì)與實(shí)現(xiàn)  14
2.3.1  顯示模塊  15
2.3.2  控制輸入模塊  15
2.3.3  測溫模塊   16
2.4  單片機(jī)外圍電路及端口使用   17
3  系統(tǒng)軟件編寫與分析  18
3.1  引言  18
3.2  局部功能模塊分析與編寫   18
3.2.1  顯示模塊   18
3.2.2  控制模塊  19
3.2.3  測溫模塊  19
3.3  總程序  25
4  系統(tǒng)整體調(diào)試  26
4.1  調(diào)試工具   26
4.2  硬件調(diào)試  26
4.3  軟件各模塊調(diào)試   27
4.3.1  顯示調(diào)試   27
4.3.2  測溫調(diào)試  29
4.4  整體調(diào)試  31
結(jié)論  32
致謝  33
參考文獻(xiàn)  34
附錄1  系統(tǒng)硬件電路設(shè)計(jì)原理圖  35
附錄2  系統(tǒng)PCB外觀圖  36
附錄3  實(shí)物外觀圖   37
附錄4  系統(tǒng)總程序  38

摘  要

溫度是一種最基本的環(huán)境參數(shù)，人民的生活與環(huán)境的溫度息息相關(guān)，在工業(yè)生產(chǎn)過程中需要實(shí)時(shí)測量溫度，在農(nóng)業(yè)生產(chǎn)中也離不開溫度的測量，因此研究溫度的測量方法和裝置具有重要的意義。測量溫度的關(guān)鍵是溫度傳感器，溫度傳感器的發(fā)展經(jīng)歷了三個(gè)發(fā)展階段：①傳統(tǒng)的分立式溫度傳感器，②模擬集成溫度傳感器，③智能集成溫度傳感器。目前，國際上新型溫度傳感器正從模擬式向數(shù)字式，從集成化向智能化、網(wǎng)絡(luò)化的方向飛速發(fā)展。
本設(shè)計(jì)我選擇DS18B20作為本系統(tǒng)的溫度傳感器，選擇單片機(jī)89C2051為測控系統(tǒng)的核心來完成數(shù)據(jù)采集、處理、顯示、報(bào)警等功能。它集溫度測量，A/D轉(zhuǎn)換于一體，具有單總線結(jié)構(gòu)，數(shù)字量輸出等優(yōu)點(diǎn)。選用數(shù)字溫度傳感器DS18B20，省卻了采樣/保持電路、運(yùn)放、數(shù)/模轉(zhuǎn)換電路以及進(jìn)行長距離傳輸時(shí)的串/并轉(zhuǎn)換電路，簡化了電路，縮短了系統(tǒng)的工作時(shí)間，降低了系統(tǒng)的硬件成本。并用4511譯碼器驅(qū)動(dòng)LED顯示溫度值。
在此次設(shè)計(jì)中，硬件設(shè)計(jì)使用了工具PROTEL99SE制作原理圖和PCB板圖，軟件設(shè)計(jì)中使用了模塊編程的方法明確邏輯結(jié)構(gòu)。調(diào)試過程中使用了示波器，萬用表，燒錄器，編程器及其軟件。

關(guān)鍵詞：AT89C2051  溫度測量  DS18B20  LED顯示  單片機(jī)

Abstract

The temperature is one kind of the most fundamental environment parameter , life of the people and the environment temperature are vitally interrelated , need the real time measurement temperature in industry procedure of production, the method and device measuring , studying therefore the temperature measurement also being unable to be seprated from the temperature in giving birth to a child in agriculture has important significance. Measuring the temperature key is that the temperature sensor , development of the temperature sensor have experienced three developing a stage: (2) discrete tradition temperature sensor (1), simulates the integrated integrated temperature sensor, (3) intelligence temperature sensor. At present, on the international, the new model temperature sensor is developing at full speed from simulating style to the digital , from the integrated-rization direction to intellectualized, network-rization.
DS18B20 designing that I choose originally is the originally systematic temperature sensor , 89 C2051 choosing the monolithic machine are to measure and control systematic core functions such as coming to accomplish the data collect , to handle , show , giving an alarm. It incorporates the temperature measurement , A/D changes Yu an integral whole, have merit such as the Shan highway structure , figure amount output. Select and use figure temperature sensor DS18B20, province but sampling/ hold circuit , a circuit, have shortened systematic on-time , have reduced systematic hardware cost. And, with 4511, the decoder drives LED demonstrating temperature value.
Method having pursued , having used in software design the module programming in the board designing that middle , the hardware design have used implement PROTEL99SE to make principle picture and PCB this time makes the logic structure clear. Have used the oscillograph , multimeter , fever to record an implement in testing process, programming implement and their software。
Keywords: AT89C2051  Temperature measurement   DS18B20   LED is demonstrated    Single-chip microcomputer(SCM)