數(shù)字溫度計(jì)設(shè)計(jì)

電子信息工程論文編號(hào):DZXX006  論文字?jǐn)?shù):11275,頁(yè)數(shù):37

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 數(shù)字溫度計(jì)的總體設(shè)計(jì) 3
    2.1 數(shù)字溫度計(jì)的設(shè)計(jì)思想 3
    2.2 數(shù)字溫度計(jì)的總體框圖 3
    2.3 系統(tǒng)的工作原理 3
    2.4 主要器件的選擇 3
        2.4.1 單片機(jī)的選擇 3
        2.4.2 傳感器的選擇 4
第3章 體溫計(jì)的硬件設(shè)計(jì) 5
    3.1 單片機(jī)概述 5
    3.2 主要器件概述 6
        3.2.1 AT89S51功能簡(jiǎn)介 6
        3.2.2 DS18B20簡(jiǎn)介 8
        3.2.3 DS18B20的測(cè)溫過程 10
        3.2.4 溫度數(shù)據(jù)的計(jì)算處理方法 11
    3.3 系統(tǒng)的電路設(shè)計(jì) 11
        3.3.1 總體控制線路圖 11
        3.3.2 各部分具體控制線路圖 12
    3.4 溫度顯示界面 14
第4章 數(shù)字溫度計(jì)的軟件設(shè)計(jì) 15
    4.1程序設(shè)計(jì)流程圖 15
    4.2程序的主控制循環(huán)調(diào)用 16
    4.3讀溫度程序設(shè)計(jì) 16
    4.4顯示溫度的程序設(shè)計(jì) 17
第5章 系統(tǒng)的調(diào)試 19
    5.1單片機(jī)應(yīng)用系統(tǒng)的硬件調(diào)試 19
    5.2單片機(jī)應(yīng)用系統(tǒng)的軟件調(diào)試 19
第6章 結(jié)束語(yǔ) 20
致謝 21
附錄 源代碼 23

摘要

 近年來隨著科技的飛速發(fā)展，一個(gè)以微電子技術(shù)、計(jì)算機(jī)技術(shù)和通信技術(shù)為先導(dǎo)的信息革命正在蓬勃發(fā)展。計(jì)算機(jī)技術(shù)作為三者之一，怎樣與實(shí)際應(yīng)用更有效的結(jié)合并發(fā)揮其作用。單片機(jī)作為計(jì)算機(jī)技術(shù)的一個(gè)分支，正在不斷的應(yīng)用到實(shí)際生活中，同時(shí)帶動(dòng)傳統(tǒng)控制檢測(cè)的更新。在實(shí)時(shí)檢測(cè)和自動(dòng)控制的應(yīng)用系統(tǒng)中，單片機(jī)往往是作為一個(gè)核心部件使用，針對(duì)具體應(yīng)用對(duì)象的特點(diǎn),配以其它器件來加以完善。
 溫度是生命活動(dòng)的一種表現(xiàn)，是人體新陳代謝的一個(gè)重要生理參數(shù)，溫度既有生理學(xué)的意義，又有重要的臨床醫(yī)學(xué)意義,是臨床診斷的一個(gè)重要指標(biāo)。因此,溫度計(jì)的性能在現(xiàn)在的生活中有極為重要的作用，傳統(tǒng)的水銀溫度計(jì)在測(cè)溫時(shí)間，攜帶，以及環(huán)境污染等方面有不良之處，本課題基于傳統(tǒng)溫度計(jì)的這些缺點(diǎn)設(shè)計(jì)出一種新型的電子溫度計(jì)，它在測(cè)溫精度能與傳統(tǒng)的水銀溫度計(jì)相媲美的情況下，大大的縮短了測(cè)溫時(shí)間,攜帶方便,對(duì)環(huán)境幾乎沒有污染。它以8051單片機(jī)為整個(gè)體溫計(jì)的核心,結(jié)合溫度傳感器，A\D轉(zhuǎn)換電路（AD574A）， LCD模塊等外部設(shè)備，在軟件的控制下，實(shí)現(xiàn)智能化的溫度測(cè)量，不但能夠精確測(cè)溫，而且能夠?qū)�溫度進(jìn)行語(yǔ)音播報(bào),邏輯判斷，并且通過液晶顯示器將測(cè)量結(jié)果以英文的形式顯示出來。
關(guān)鍵詞：?jiǎn)纹瑱C(jī); 溫度傳感器; 數(shù)字溫度計(jì)

ABSTRACT

 In recent years along with technical rapid development，Take microelectronic technology，computer technology and communication as forerunner's information revolution vigorous development。The computer technology took three one，how wields its function concurrently with a practical application more effective union。The monolithic integrated circuit took the computer technology a branch，in the unceasing application practical life，simultaneously is leading the traditional control examination the renewal。In the real-time examination and in the automatic control application system，the monolithic integrated circuit often takes a core part use，in view of concrete application object characteristic, Matches comes by other components to consummate。                    
 This new intelligent electronic thermometer, in which microprocessor plays a key role, under the control of software, can unit all the hardware circuit to implement the intelligent measurement. It can not only measure a temperature precisely, but also broadcast your temperature, judge it logically, and display it with a LCD module in the from of Chinese characters. According to the characteristics of SCM8051 and the principles of A／D transformed apparatus，the digital zatuib and automation of measurement of temperature are will he brought about．This paper mainly aims at probing an d studying the digital thermograph hardware and software which grouped by SCM8051.AD574A and produced by Intel Company. It also lists sectional assembly source program for reference. The internal configuration，principle and technical features of LCD controller are introduced．The applications of LCD controller in time—display is discussed，and their best interface ways，control design with SCM8051 are described briefly．The programming method，diagram of serial clock chip are provided．This article designed an electronic circuit connection between AD574 and SCM8051 Single chip computer through analyzing of function，character sties and work cycles chart of the program and the source procedure corresponding with it according to the facts.

 Keywords: MCU；temperature probe；Digital thermometer