基于單片機(jī)的多點(diǎn)溫度檢測(cè)系統(tǒng)

電子機(jī)電論文編號(hào):JD159  字?jǐn)?shù):10996,頁(yè)數(shù):48

目  錄

摘要........................................................................... 2
Abstract .......................................................................3
第一章 緒論 ...................................................................4
1.1系統(tǒng)背景.................................................................... 4
1.2 系統(tǒng)概述 ...................................................................4
第二章 方案論證.................................................................5
2.1 傳感器部分..................................................................5
2.2主控制部分 ..................................................................6
2.3  系統(tǒng)方案...................................................................6
第三章硬件電路設(shè)計(jì).............................................................7
3.1 電源以及看門(mén)狗電路 .........................................................8

3.2鍵盤(pán)以及顯示電路 ............................................................9
3.2溫度測(cè)試電路 ................................................................11
3.3 串口通訊電路 ...............................................................15
3.4 整體電路................................................................... 16
第四章 軟件設(shè)計(jì) ................................................................16
4.1 概述 .......................................................................16
4.2 主程序方案................................................................. 16
4.3 各模塊子程序設(shè)計(jì) ...........................................................18
第五章 系統(tǒng)調(diào)試.................................................................20
5.1 分步調(diào)試 ...................................................................20
5.2 統(tǒng)一調(diào)試................................................................... 20
結(jié)束語(yǔ)................................................................... ......21
參考文獻(xiàn) .......................................................................22
附錄一:軟件流程圖 ..............................................................24
附錄二：電路原理圖 .............................................................25
致  謝......................................................................... 27
源程序......................................................................... 28

摘要

DS18B20是一種可組網(wǎng)的高精度數(shù)字式溫度傳感器，由于其具有單總線(xiàn)的獨(dú)特優(yōu)點(diǎn)，可以使用戶(hù)輕松地組建起傳感器網(wǎng)絡(luò)，并可使多點(diǎn)溫度測(cè)量電路變得簡(jiǎn)單、可靠。本文結(jié)合實(shí)際使用經(jīng)驗(yàn)，介紹了DS18B20數(shù)字溫度傳感器在單片機(jī)下的硬件連接及軟件編程，并給出了軟件流程圖。
該系統(tǒng)由上位機(jī)和下位機(jī)兩大部分組成。下位機(jī)實(shí)現(xiàn)溫度的檢測(cè)并提供標(biāo)準(zhǔn)RS232通信接口，芯片使用了ATMEL公司的AT89C51單片機(jī)和DALLAS公司的DS18B20數(shù)字溫度傳感器。上位機(jī)部分使用了通用PC。該系統(tǒng)可應(yīng)用于倉(cāng)庫(kù)測(cè)溫、樓宇空調(diào)控制和生產(chǎn)過(guò)程監(jiān)控等領(lǐng)域。
關(guān)鍵字：溫度測(cè)量；單總線(xiàn)；數(shù)字溫度傳感器；單片機(jī)

Abstract
    As a kind of high-accuracy digital net temperature sensor，DS18 B20 can be used building a sensor net easily. It can also make the net simple and reliable with it's special 1-wire interface .This paper introduces the application of DS18B20 with single chip processor.
The system is constituted by two parts the temperature measured part and displayed part. The temperature measured part has a RS232 interface. It used AT89C51 of ATMEL company and DS18B20 of DALLAS company .The displayed part uses PC .This system is applied in such domains as warehouse detecting temperature；air-conditioner controlling system in building and supervisory productive process etc.

Key words：temperature measure；single bus；digital thermometer；single chip processor；