本論文是有關(guān)DS18B20溫度傳感器的單片機(jī)設(shè)計(jì)

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自動(dòng)溫控系統(tǒng)信號(hào)采集及處理設(shè)計(jì)
【摘 要】隨著電子技術(shù)的迅速發(fā)展，特別是隨大規(guī)模集成電路的出現(xiàn)，給人類生活帶來很大的改變,尤其是有關(guān)單片機(jī)技術(shù)應(yīng)用的產(chǎn)品走進(jìn)了千家萬戶。由于單片機(jī)具有集成度高、功能強(qiáng)、體積小、價(jià)格低、抗干擾能力等優(yōu)于一般CPU的優(yōu)點(diǎn)，因此，在要求較高控制精度和較低成本的工業(yè)測(cè)控系統(tǒng)中，往往采用單片機(jī)作為數(shù)字控制系統(tǒng)取代模擬控制系統(tǒng)。在工業(yè)生產(chǎn)中，溫度作為生產(chǎn)過程和科學(xué)試驗(yàn)中最普遍而且較重要的物理參數(shù), 必須要求在溫度的采集功能達(dá)到實(shí)時(shí)性及精準(zhǔn)性的要求。因此，對(duì)溫度采集系統(tǒng)的設(shè)計(jì)就顯得非常必要了。本文從單片機(jī)的有關(guān)原理出發(fā)，對(duì)自動(dòng)溫控系統(tǒng)的信號(hào)采集分別進(jìn)行了硬件及軟件設(shè)計(jì)，在設(shè)計(jì)中采取89C51型單片機(jī)，通過匯編程序來實(shí)現(xiàn)該單片機(jī)對(duì)溫度的接收、轉(zhuǎn)換、存儲(chǔ)和顯示過程，實(shí)現(xiàn)了對(duì)溫度的實(shí)時(shí)采集與顯示。

【關(guān)鍵詞】 單片機(jī)；溫控系統(tǒng)；采集；設(shè)計(jì)  

Automatic temperature control system design of signal acquisition and processing
【Abstract】With the rapid development of electronic technology, especially with the emergence of large scale integrated circuit, to bring great change in human life, particularly in relation to the application of SCM technology products into the millions of households. The microcontroller with high integration, functionality, small volume, low price and superior anti-interference ability of the advantages of the general CPU, therefore, require a higher control accuracy and low cost industrial measurement and control systems, often used as a digital single chip control system to replace the analog control system. In industrial production, the temperature of production and scientific experimentation as the most common and the more important physical parameters, the temperature must be required to achieve real-time capture functionality and accuracy requirements.Therefore, the temperature acquisition system it is very necessary. In this paper, the relevant SCM principle, automatic temperature control system for data acquisition were carried out hardware and software design, taken in the design of 89C51 MCU by MCU assembler to achieve the temperature of the reception, conversion, storage and display process , the realization of real-time acquisition and display temperature.

【Keywords】Microcontroller；Temperature control system；Acquisition；Design

目     錄
1 緒論 5
1.1 選題背景及意義 5
1.2 論文主要內(nèi)容及重點(diǎn) 5
1.2.1 本文主要研究?jī)?nèi)容 5
1.2.2 本文研究重點(diǎn) 6
2相關(guān)理論介紹 6
2.1單片機(jī)的概念及特點(diǎn) 6
2.2 AT89C51單片機(jī)簡(jiǎn)介 6
2.3 DS18B20溫度傳感器介紹 7
3 系統(tǒng)硬件的設(shè)計(jì) 9
3.1硬件總體設(shè)計(jì)方案 9
3.1.1 采集模塊 9
3.1.2 控制模塊 10
3.1.3 顯示模塊 10
3.2硬件設(shè)計(jì)的具體功能 10
3.3溫度采集模塊實(shí)現(xiàn)過程 10
3.3.1 DS18B20溫度采集原理 10
3.3.2 本系統(tǒng)中DS18B20溫度傳感器采集電路設(shè)計(jì) 11
3.3.3  DS18B20溫度傳感器在本系統(tǒng)中的操作重點(diǎn) 12
3.4控制模塊的實(shí)現(xiàn)過程 12
3.4.1 本系統(tǒng)中AT89C51單片機(jī)所使用的主要指令 13
3.4.2 AT89C51單片機(jī)引腳功能 13
3.5顯示模塊的實(shí)現(xiàn)過程 14
3.5.1 數(shù)碼管概述及驅(qū)動(dòng)方式 14
3.5.2  LED數(shù)碼管分類 14
3.5.3 本系統(tǒng)中數(shù)碼管顯示電路設(shè)計(jì) 15
3.6 其他功能設(shè)計(jì) 16
3.6.1風(fēng)扇控制電路設(shè)計(jì) 16
3.6.2發(fā)光管控制電路設(shè)計(jì) 17
3.6.3按鍵控制電路設(shè)計(jì) 17
3.6.4本系統(tǒng)的電源設(shè)計(jì) 18
4 系統(tǒng)軟件設(shè)計(jì)及仿真 19
4.1系統(tǒng)軟件設(shè)計(jì)方案 19
4.2系統(tǒng)子程序設(shè)計(jì)說明 20
4.3 程序?qū)崿F(xiàn)主要代碼 21
4.4 Proteus仿真軟件功能說明 27
4.5 KEIL編譯器及開發(fā)環(huán)境說明 28
4.5.1 KEIL C51編譯器介紹 28
4.5.2 KEIL 的uVision2集成開發(fā)環(huán)境特點(diǎn) 29
4.5.3 uVision2的編輯器 29
4.5.4 uVision2的調(diào)試器 29
4.6 溫控系統(tǒng)仿真實(shí)現(xiàn) 30
結(jié)束語 32
致謝 33
參考文獻(xiàn) 34