XXXA1A0A3A2A4A5A7前言41總體方案設(shè)計(jì)511方案論證5111傳感器5112主控部分52硬件電路的設(shè)計(jì)621電源電路622溫度采集電路7221DS18B20簡介7222電路設(shè)計(jì)9223無線傳輸電路模塊103無線發(fā)送與接收電路1131無線發(fā)送電路1132無線接收模塊114顯示電路1241字符型液晶顯示模塊1242字符型液晶顯示模塊引腳1343字符型液晶顯示模塊內(nèi)部結(jié)構(gòu)135單片機(jī)AT89S521451AT89S52簡介1452AT89S52引腳說明156軟件設(shè)計(jì)1761系統(tǒng)概述1762程序設(shè)計(jì)流程圖1763溫度傳感器多點(diǎn)數(shù)據(jù)采集187調(diào)試及結(jié)果1871測試環(huán)境及工具1872測試方法1873測試結(jié)果分析188總結(jié)19附錄1電路原理總圖20附錄2發(fā)射部分主程序21附錄3接收部分主程序27參考文獻(xiàn)32XXXA1A0A3A2A4A5A9無線數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)學(xué)生XX指導(dǎo)教師XX內(nèi)容摘要A10由于數(shù)據(jù)采集系統(tǒng)的應(yīng)用范圍越來越寬、所涉及到的測量信號和信號源的類型越來越多、對測量的要求也越來越高，國內(nèi)現(xiàn)在已有不少數(shù)據(jù)測量和采集的系統(tǒng)，但很多系統(tǒng)存在功能單一、采集G17902G17959少、采集G17907G10587G1314、G6817G1328G3809G7446，G5194G1000對測試環(huán)境要求G17751高G12573G19394G20076G452G1166G1216G19668要一G12193應(yīng)用范圍G5203、G5627G1227G8616高的數(shù)據(jù)采集系統(tǒng)G452在分析G1114不G2528類型的單G10267G7438的G10317點(diǎn)及單G10267G7438G994G51G38G7438G17902信G6228G7427的G3534G11796G990，設(shè)計(jì)G1114單G10267G7438控G2058的采集系統(tǒng)，G5194G17902G17819G1030G2487G17902信G4466現(xiàn)單G10267G7438G994G51G11G726G7438G1055G19400的G17902信，G4466現(xiàn)數(shù)據(jù)的傳送G5194G4570數(shù)據(jù)在G51G38G7438G990顯示及存G1660，G4448G6116單G7438的多G17902G17959數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)及G4466現(xiàn)G452G3534于單G10267G7438的多G17902G17959數(shù)據(jù)采集系統(tǒng)G7171由G4570來G14270傳感器的信號G17902G17819G6930G3835、線G5627G2282、G9400G8886、G2528G8505采G7691G1457G6357G12573G3800理G2530，輸G1849AG715DG17728G6454G1038數(shù)字信號G2530由單G10267G7438采集，G9994G2530G2045用單G10267G7438G994G51G38G7438的G17902信G4570數(shù)據(jù)送到G51G38G7438G17839G15904數(shù)據(jù)的存G1660、G2530G7411G3800理G994顯示，G4466現(xiàn)G1114數(shù)據(jù)G3800理功能G5390G3835、顯示G11464G16278、G11040G19766G2463G3921、G5627G1227G8616高、應(yīng)用G5203G8879的G10317點(diǎn)，G2499G5203G8879應(yīng)用于工G1006控G2058、G1214器、G1214G15932、G7438電一G1319G2282、G7246能G4490G4633G12573G16844多G20058G3507G452關(guān)鍵詞多G17902G17959數(shù)據(jù)采集單G10267G7438XXXA1A0A3A2A4A5A11DESIGNANDIMPLEMENTATIONOFWIRELESSDATAACQUISITIONSYSTEMABSTRACTA12A6A8A13A14A15A16A14A17A6A18A14A21A19A8A23A14A20A22A18A19A15A19A19A13A24A25A6A12A6A15A6A20A8A12A26A12A15A14A27A28A17A16A6A13A16A6A8A29A20A30A29A14A12A15A16A14A27A14A19A12A25A21A14A27A14A8A15A12A6A23A8A19A30A19A8A18A15A16A14A15A26A31A14A20A22A12A6A23A8A19A30A12A20A25A21A13A14A27A20A21A14A19A8A18A27A20A21A14A28A34A25A21A29A14A26A20A21A12A19A21A14A6A8A13A21A14A19A12A6A8A23A30A26A16A6A23A16A21A14A24A25A6A21A14A27A14A8A15A12A20A22A15A16A14A18A20A27A14A12A15A6A13A8A20A17A16A19A29A14A19A30A20A15A20A22A18A19A15A19A19A13A24A25A6A12A6A15A6A20A8A19A8A18A27A14A19A12A25A21A14A27A14A8A15A12A26A12A15A14A27A32A25A15A15A16A14A21A14A19A21A14A27A19A8A26A12A6A8A23A30A14A22A25A8A13A15A6A20A8A12A26A12A15A14A27A12A28A13A20A30A30A14A13A15A6A8A23A30A14A12A12A19A13A13A14A12A12A28A30A20A17A13A20A30A30A14A13A15A6A20A8A21A19A15A14A28A13A20A27A31A30A6A13A19A15A14A18A20A31A14A21A19A15A6A20A8A12A28A19A8A18A15A16A14A18A14A27A19A8A18A12A20A22A15A16A14A15A14A12A15A14A8A29A6A21A20A8A27A14A8A15A19A8A18A20A15A16A14A21A6A12A12A25A14A12A36A37A15A21A14A24A25A6A21A14A12A19A33A21A20A19A18A12A13A20A31A14A20A22A19A31A31A30A6A13A19A15A6A20A8A28A16A6A23A16A21A14A30A6A19A33A6A30A6A15A26A19A8A18A30A20A17A39A13A20A12A15A18A19A15A19A19A13A24A25A6A12A6A15A6A20A8A12A26A12A15A14A27A36A32A19A12A14A18A20A8A15A16A14A19A8A19A30A26A12A6A12A20A22A15A16A14A13A16A19A21A19A13A15A14A21A6A12A15A6A13A12A20A22A18A6A22A22A14A21A14A8A15A15A26A31A14A12A20A22A34A35A38A19A8A18A34A35A38A19A8A18A40A35A13A20A27A27A25A8A6A13A19A15A6A20A8A15A14A13A16A8A20A30A20A23A26A28A34A35A38A13A20A8A15A21A20A30A20A22A15A16A14A13A20A30A30A14A13A15A6A20A8A12A26A12A15A14A27A18A14A12A6A23A8A14A18A19A8A18A19A18A20A31A15A14A18A38A35A41A12A14A21A6A19A30A13A20A27A27A25A8A6A13A19A15A6A20A8A33A14A15A17A14A14A8A40A35A19A8A18A13A20A27A27A25A8A6A13A19A15A6A20A8A12A28A44A19A15A19A15A21A19A8A12A27A6A12A12A6A20A8A19A8A18A18A6A12A31A30A19A26A20A22A18A19A15A19A12A15A20A21A14A18A20A8A15A16A14A40A35A36A34A6A8A23A30A14A13A20A27A31A30A14A15A14A18A15A16A14A27A25A30A15A6A39A13A16A19A8A8A14A30A18A19A15A19A19A13A24A25A6A12A6A15A6A20A8A12A26A12A15A14A27A18A14A12A6A23A8A19A8A18A6A27A31A30A14A27A14A8A15A19A15A6A20A8A42A32A19A12A14A18A20A8A34A35A38A46A12A27A25A30A15A6A39A13A16A19A8A8A14A30A18A19A15A19A19A13A24A25A6A12A6A15A6A20A8A12A26A12A15A14A27A6A12A19A18A20A31A15A14A18A17A6A30A30A13A20A27A14A22A21A20A27A15A16A14A12A14A8A12A20A21A12A6A23A8A19A30A19A27A31A30A6A22A6A13A19A15A6A20A8A28A30A6A8A14A19A21A22A6A30A15A14A21A6A8A23A28A47A22A15A14A21A31A21A20A13A14A12A12A6A8A23A27A19A6A8A15A19A6A8A12A26A8A13A16A21A20A8A20A25A12A12A19A27A31A30A6A8A23A28A17A16A6A13A16A13A20A8A29A14A21A15A14A18A15A20A18A6A23A6A15A19A30A12A6A23A8A19A30A6A8A31A25A15A47A43A44A13A20A8A29A14A21A12A6A20A8A33A26A34A35A38A47A13A24A25A6A12A6A15A6A20A8A28A49A16A14A8A28A34A35A38A19A8A18A40A35A15A20A40A35A13A20A27A27A25A8A6A13A19A15A6A20A8A12A18A19A15A19A15A20A15A16A14A18A19A15A19A12A15A20A21A19A23A14A28A31A20A12A15A39A31A21A20A13A14A12A12A6A8A23A19A8A18A18A6A12A31A30A19A26A42A19A31A20A17A14A21A22A25A30A18A19A15A19A31A21A20A13A14A12A12A6A8A23A28A29A6A12A25A19A30A12A16A20A17A12A28A22A21A6A14A8A18A30A26A6A8A15A14A21A22A19A13A14A19A8A18A16A6A23A16A31A14A21A22A20A21A27A19A8A13A14A39A31A21A6A13A14A21A19A15A6A20A28A19A17A6A18A14A21A19A8A23A14A20A22A22A14A19A15A25A21A14A12A42A13A19A8A33A14A17A6A18A14A30A26A25A12A14A18A6A8A6A8A18A25A12A15A21A6A19A30A13A20A8A15A21A20A30A14A24A25A6A31A27A14A8A15A28A6A8A12A15A21A25A27A14A8A15A12A28A19A8A18A14A30A14A13A15A21A6A13A19A30A14A8A23A6A8A14A14A21A6A8A23A6A8A15A14A23A21A19A15A6A20A8A28A6A8A15A14A30A30A6A23A14A8A15A16A20A27A14A19A8A18A27A19A8A26A20A15A16A14A21A22A6A14A30A18A12A36KEYWORDSA38A25A30A15A6A39A13A16A19A8A8A14A30A44A19A15A19A47A13A24A25A6A12A6A15A6A20A8A38A6A13A21A20A13A20A8A15A21A20A30A30A14A21XXXA45A48A50A51A52A53A54無線數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)前言21G1002G13438的G1182G3837，G12197G4410G6228G7427的發(fā)G4649G7097G7044G7388G5334，G12197G4410G6228G7427的G17839G8505G2528G7114也G5114G2172G1114測量G6228G7427的發(fā)G4649，現(xiàn)G1207控G2058設(shè)G3803不G2528于G1209G2081，G4439G1216在G5627能和結(jié)構(gòu)發(fā)G10995G1114G13775G3837G16218G3332的G2476G2282G452G6117G1216已G13475G17839G1849G1114高G17907發(fā)G4649的信G5699G7114G1207，測量G6228G7427G7171G5415G1182G12050G1262的主流，G5203G8879G3332G9157G1849到應(yīng)用工程的G2520G1022G20058G3507G452溫度G7171工G1006、G1904G1006G10995G1147中常見的和最G3534本的參數(shù)G1055一，在G10995G1147G17819程中常G19668對溫度G17839G15904檢測和監(jiān)控，采用微型G7438G17839G15904溫度檢測、數(shù)字顯示、信G5699存G1660及G4466G7114控G2058，對于提高G10995G1147效G10587和G1147品質(zhì)量、節(jié)約能源G12573都有重要的G1328用G452伴隨工G1006G12197G6228、G1904G1006G12197G6228的發(fā)G4649，溫度測量G19668求越來越多，也越來越重要G452但G7171在一些G10317定環(huán)境溫度監(jiān)測環(huán)境范圍G3835,測點(diǎn)距離遠(yuǎn),布線很不方便G452這G7114就要采用無線方式對溫度數(shù)據(jù)G17839G15904采集G452多路無線溫度采集系統(tǒng)G2499被G5203G8879應(yīng)用于溫度測量或相應(yīng)的G2499G17728G6454G1038溫度量或供電故障監(jiān)控的工G1006、G1904G1006、環(huán)G1457、服務(wù)G1006、安全監(jiān)控G12573工程中，例如G726城市路燈故障檢測和供電線路防盜監(jiān)視、城市G4633民小區(qū)供熱檢測、G3835型倉庫溫度檢測、工G1006G10995G1147測控、G1904G1006G10995G1147溫度測控、環(huán)G1457工程、故障監(jiān)控工程G12573G452考慮到許多工G1006環(huán)境中對多點(diǎn)溫度G17839G15904監(jiān)控，一般G19668要測量幾十G1022點(diǎn)G1209G990G452本文設(shè)計(jì)多路無線溫度監(jiān)控系統(tǒng)G452本設(shè)計(jì)G7171G1209ATMEL公司的AT89S51單G10267G7438G1328G1038控G2058核心，提出G1209DS18B20的單總線分布式溫度采集G994控G2058系統(tǒng)G452多G1022溫度傳感節(jié)點(diǎn)G17902G17819單總線G994單G10267G7438相連形G6116分布式系統(tǒng)G452控G2058器G17902G17819溫度傳感器G4466G7114檢測G2520節(jié)點(diǎn)的溫度G2476G2282，G5194在LG38D1602G990循環(huán)顯示G2520節(jié)點(diǎn)溫度的G2476G2282G452G17902G17819G1030G2487G4570檢測到的溫度信G5699回饋到G990位G7438（G51G38G7438），從而遠(yuǎn)程G4466現(xiàn)對整G1022系統(tǒng)的檢測G452因G1038采用微型G7438G17839G15904溫度檢測、數(shù)字顯示、信G5699存G1660及G4466G7114控G2058，對于提高G10995G1147效G10587和G1147品質(zhì)量、節(jié)約能源G12573都有重要的G1328用，G5194G1000溫度參數(shù)對工G1006G10995G1147的重要G5627，所G1209溫度測量系統(tǒng)的精確度和G7246能G2282一G11464受到企G1006的重視G452所G1209G4410習(xí)G5194研究溫度測量及相關(guān)知識G2499做G1038一G1022G17751G1038G4466用的課G20076的方向，能獲得G17751G4466用的知識和方法G452因此溫度測控G6228G7427G7171一G1022很G4466用、也很重要的G6228G7427，值得去研究掌握G452G4439應(yīng)用的G20058G3507也相G5415G5203G8879，G2499G1209應(yīng)用到消防電氣的非破壞G5627溫度檢測，電力、電訊設(shè)G3803的G17819熱故障預(yù)知檢測，空調(diào)系統(tǒng)的溫度檢測，G2520類運(yùn)輸工具G1055組件的G17819熱檢測，G1457全G994監(jiān)視系統(tǒng)G1055應(yīng)用，醫(yī)療G994健診的溫度測試，G2282工、G7438械G12573設(shè)G3803溫度G17819熱檢測G452因此G2081景G7171相G5415的G2499G16278G452XXXA55A56A57A58A59A60A611總體方案設(shè)計(jì)溫度檢測系統(tǒng)有則共G2528的G10317點(diǎn)G726測量點(diǎn)多、環(huán)境G3809G7446、布線分散、現(xiàn)場離監(jiān)控G4472遠(yuǎn)G12573G452G14521采用一般溫度傳感器采集溫度信號，則G19668要設(shè)計(jì)信號調(diào)理電路、AG18DG17728G6454及相應(yīng)的接G2487電路，G6177能G6238傳感器輸出的模G6323信號G17728G6454G6116數(shù)字信號送到計(jì)G12651G7438去G3800理G452這G7691，由于G2520G12193因G13044G1262G17908G6116檢測系統(tǒng)G17751G3835的G1571G5058G727G2460因G1038檢測環(huán)境G3809G7446、測量點(diǎn)多、信號傳輸距離遠(yuǎn)及G2520G12193G5190G6212的G5445G2721，G1262G1363檢測系統(tǒng)的G12295定G5627和G2499G19764G5627G991G19489G452所G1209多點(diǎn)溫度檢測系統(tǒng)的設(shè)計(jì)的關(guān)G19202在于G1016部分G726溫度傳感器的G17885G6333和主控單G1815的設(shè)計(jì)G452溫度傳感器應(yīng)用范圍G5203G8879、G1363用數(shù)量G5234G3835，也高G4633G2520類傳感器G1055G20330G45211方案論證111傳感器方案一G726采用熱G6947電G19471，G2499G9397G1728740G6680G8675度G1427990G6680G8675度測量范圍，但熱G6947電G19471精度、重G3809G5627、G2499G19764G5627G17751G5058，對于檢測1G6680G8675度的信號G7171不G17878用的G452方案G1120G726采用單G10267模G6323量的溫度傳感器，G8616如AD590,LG4835G12573G452但這些G14467G10267輸出的都G7171模G6323信號，G5529G20047G13475G17819AG18DG17728G6454G2530G6177能送G13485計(jì)G12651G7438，這G7691就G1363得測溫G16025G13634的結(jié)構(gòu)G17751G3809G7446G452G2490G3818，這G12193測溫G16025G13634的一G7693線G990G2494能G6358一G1022傳感器，不能G17839G15904多點(diǎn)測量G452G2375G1363能G4466現(xiàn)，也要用到G3809G7446的G12651法，一定程度G990也G3698G2164G1114G17731件G4466現(xiàn)的G19602度G452方案G989G726采用數(shù)字溫度傳感器DS18B20測量溫度，輸出信號全數(shù)字G2282G452便于單G10267G7438G3800理及控G2058，G11477去傳統(tǒng)的測溫方法的很多G3818圍電路G452G1000G16825G14467G10267的G10301理G2282G4410G5627很G12295定，G4439能用做工G1006測溫G1815件，此G1815件線G5627度G17751G3921G452在0100G6680G8675度G7114，最G3835線形G1571G5058小于1G6680G8675度G452DS18B20的最G3835G10317點(diǎn)G1055一采用G1114單總線的數(shù)據(jù)傳輸，由數(shù)字溫度計(jì)DS1820和微控G2058器AT89S52構(gòu)G6116的溫度測量G16025G13634，G4439G11464接輸出溫度的數(shù)字信號，G2499G11464接G994計(jì)G12651G7438連接G452這G7691，測溫系統(tǒng)的結(jié)構(gòu)就G8616G17751簡單，G1319G12227也不G3835，G1000由于AT89S52G2499G1209G5114多G1022DSB1820，因此G2499G1209非常G4493G7143G4466現(xiàn)多點(diǎn)測量G452G17743G7506的組G5326傳感器G13605G13488G452采用溫度G14467G10267DS18B20測量溫度，G2499G1209G1319現(xiàn)系統(tǒng)G14467G10267G2282這G1022G17247G2195G452部分功能電路的集G6116，G1363總G1319電路G7368簡G8917，G6657G5326電路和G9950接電路G7114G7368G5567G452而G1000，集G6116塊的G1363用，有效G3332G18003G1825G3818G11040的G5190G6212，提高測量電路的精確度G452所G1209集G6116G14467G10267的G1363用G4570G6116G1038電路發(fā)G4649的一G12193G17247G2195G452本方案應(yīng)用這一溫度G14467G10267，也G7171G20046應(yīng)這一G17247G2195G452112主控部分方案一G726采用AT89S52G1855位單G10267G7438G4466現(xiàn)G452單G10267G7438G17731件G13546程的G14270由度G3835，G2499G17902G17819G13546程G4466現(xiàn)G2520G12193G2520G7691的G12651G7427G12651法和G17935G17765控G2058G452而G1000G1319G12227小，G11840件G4466現(xiàn)簡單，安G16025方便G452G7094G2499G1209單G10432對多DS18B20控G2058工G1328，G17836G2499G1209G994G51G38G7438G17902信運(yùn)用主從分布式G5617G5831，由一G2500G990位G7438XXXA62A63A64A65A66A67A68（G51G38微型計(jì)G12651G7438），G991位G7438（單G10267G7438）多點(diǎn)溫度數(shù)據(jù)采集，組G6116G1016G13435分布式多點(diǎn)溫度測量的G5045回檢測系統(tǒng),G4466現(xiàn)遠(yuǎn)程控G2058G452G2490G3818AT89G3851在工G1006控G2058G990也有G11540G5203G8879的應(yīng)用，G13546程G6228G7427及G3818圍功能電路的G18209G2524G1363用都很G6116G10099A69A70A71G452方案G1120G726G1363用G48SG51430G1328控G2058器，G5515G5042G1214器G11TG44G12的G17241G1314功G1058716位G53G44SG38G9163G2524信號G3800理器G48SG51430G1147品系G2027G1038電G8756供電測量應(yīng)用提供G1114最G13468G16311G1927方案G452G1328G1038G9163G2524信號和數(shù)字G6228G7427的G20058G4560G13785，TG44G2031G7044G10995G1147的G48SG51430，G1363系統(tǒng)設(shè)計(jì)G1166G2604能G3827在G1457G6357G10432一無G1120的G1314功G10587的G2528G7114G2528G8505連接G14279模G6323信號、傳感器和數(shù)字組件G452但在溫度采集和G4466G7057控G2058這G1022重要的場G2524G1314功G13803相對來說顯得就不G7171G18039G1052重要G1114，而應(yīng)G16825考慮G4439的G12295定G5627、G1946確G5627，G2528G7114對G8616AT89S52能G3827在G5627能和G17176源都G2499G1209到G17810一G1022最G1351的G10378G5589，G2499G1209G18003G1825用G48SG51430的不G5529要的G17176源G9022G17165G452G13520G990，G6117G1216傳感器采用方案G1120，控G2058器采用方案一G452系統(tǒng)G7706圖如G991圖G452A72A73A74A73A74A75A76A73A77A78A79A80A81A82A83A72A72A73A74A73A74A75A76A75A84A85A79A80A81A82A83A722硬件電路的設(shè)計(jì)本課G20076所設(shè)計(jì)的G3818圍電路G2265G6336G726電源電路、溫度采集、G7114鐘電路、存G1660電路、報(bào)警電路、模G6323控G2058電路、按G19202電路、顯示電路G1209及G1030G2487G12573電路G452G991G19766G4570依次對G2520G1022模塊G17839G15904說明G45221電源電路電源G2476壓器G7171G4570交流電G13605220V的電壓G2476G1038所G19668要的電壓值G452交流電G13475G17819G1120極管整流G1055G2530，方向單一G1114，但G7171電流G5390度G3835小G17836G7171G3800在不斷G3332G2476G2282G1055中G452這G12193脈G2172G11464流一般G7171不能G11464接用來G13485集G6116電路供電的，而要G17902G17819整流電路G4570交流電G2476G6116脈G2172的G11464流電壓G452由于此脈G2172的G11464流電壓G17836含有G17751G3835的紋G8886，G5529G20047G17902G17819G9400G8886電路G2164G1209G9400除，從而得到平滑XXXA62A63A64A65A66A67A86的G11464流電壓G452G9400G8886的任務(wù)，就G7171G6238整流器輸出電壓中的G8886G2172G6116分盡G2499能G3332減小，改G17908G6116接近G12295恒的G11464流電G452但這G7691的電壓G17836隨電G13605電壓G8886G2172，一般有10左右的G8886G2172，負(fù)載和溫度的G2476G2282而G2476G2282，因而在整流、G9400G8886電路G1055G2530，G17836G19668要接G12295壓電路G452G12295壓電路的G1328用G7171G5415電G13605電壓G8886G2172，負(fù)載和溫度G2476G2282G7114，維G6357輸出G11464流電壓G12295定G452220V交流電G17902G178199VG2476壓器G2476G10389V的交流電，9V交流電G17902G17819四G1022G1120極管的全橋整流G2530G2476G10389VG11464流電，G9994G2530G13475G17819電G16311電G4493（470F）G17839G15904一G13435G9400G8886，G1209去除G11464流電里G19766的G7446G8886，防止G5190G6212G4529VG11464流電出來G2530再G13475G17819G989端G12295壓器LM7805G12295壓G6116G1038G12295定的5V電源，其中7805的VIN腳G7171輸G1849腳，接9VG11464流電源正極，GNDG7171接G3332腳，接9VG11464流電源負(fù)極，VOUTG1038輸出腳，G4439和接G3332腳的電壓就G71715VG1114G4525V電源出來再G13475G17819電G16311電G4493的G1120G13435G9400G8886，G13635V電源G7368G2164G12295定G2499G19764G452G2528G7114在5VG12295壓電源G2164G990一G102210K的電G19471和一G1022紅色發(fā)光G1120極管，G5415G990電G2530，紅色發(fā)光G1120極管點(diǎn)亮，G15932示電源工G1328正常G452此G7114一G1022G12295定輸出5V的電源已G13475設(shè)計(jì)G3921，對于本設(shè)計(jì)G4439G4448全能G3827G9397G17287單G10267G7438及集G6116塊所G19668電源的要求A87A88A89G452電源原理圖如圖211所示G452112233CON1DY3A901A9024BRIDGE1DQC5470UFC6220UFC801UFC701UF123VVGNDINOUTU278L05D1REDR110K123P1DYSWVCC5A91A92A93A94A95A94A96A97A98A99A9122溫度采集電路221DS18B20簡介溫度G14467G10267DS18B20G7171DALLAS公司G10995G1147的一線式數(shù)字溫度傳感器，具有3引腳TO92小G1319G12227封G16025形式G452測溫分辨G10587G2499G1781000625，被測溫度用符號擴(kuò)G4649的16位數(shù)字量方式G1030G15904輸出G452測量溫度范圍G103855125，在1085范圍內(nèi)，精度G103805G452其工G1328電源G7094G2499在遠(yuǎn)端引G1849，也G2499采用寄G10995電源方式G1147G10995G452G38G51UG2494G19668一G7693端G2487線就能G994G16844多DS18B20G17902信，占用微G3800理器的端G2487G17751少，G2499節(jié)G11477G3835量的引線和G17935G17765電路G452由于每一G1022DS18B20都有唯一系G2027號，因此多G1022DS18B20G2499G1209存在G2528一條單總線G990G452這允許許XXXA100A101A102A103A104A105A106多不G2528G3332方G6930G13634溫度靈G6947器件G452此G10317G5627的應(yīng)用范圍G2265G6336HAVG38環(huán)境控G2058，G5326筑G10301、設(shè)G3803或G7438械內(nèi)的溫度檢測，G1209及G17819程監(jiān)控和控G2058中的溫度檢測G12573A107A108A109G452DS18B20的內(nèi)部結(jié)構(gòu)如圖2211所示G452A110A111A112A111A112A113A114A113A115A116A113A117A118A111A119A120A121A110DS18B20有4G1022主要的數(shù)據(jù)部件G726A、64位激光G53OG48G45264位激光G53OG48從高位到G1314位依次G10388位G38G53G38、48位序G2027號和8位G4490族G1207碼G1128HG12組G6116G452B、溫度靈G6947G1815件G452G38、非G7143失G5627溫度報(bào)警觸發(fā)器TH和TLG452G2499G17902G17819G17731件寫G1849用戶報(bào)警G990G991限值G452D、G18209G13634寄存器G452G18209G13634寄存器G1038高G17907暫存存G1660器中的第五G1022字節(jié)G452其中G530、G531G726溫度計(jì)分辨G10587設(shè)G13634位，其對應(yīng)四G12193分辨G10587如G991G15932所G2027，出廠G7114G530、G531G13634G1038缺G11477值G726G5301，G5311（G237512位分辨G10587），用戶G2499G7693據(jù)G19668要改寫G18209G13634寄存器G1209獲得G2524G17878的分辨G10587G452A122A111A112A111A112A113A114A113A123A124A125A126A127A122G530G531分辨G10587G18BIT最G3835G17728G6454G7114G19400G18US00993750110187510113751112750XXXA100A101A102A103A104A105A128高G17907暫存存G1660器由9G1022字節(jié)組G6116，其分G18209如G159322212所示G452G5415溫度G17728G6454命令發(fā)布G2530，G13475G17728G6454所得的溫度值G1209G1120字節(jié)補(bǔ)碼形式存G6930在高G17907暫存存G1660器的第0和第1G1022字節(jié)G452單G10267G7438G2499G17902G17819單線接G2487讀到G16825數(shù)據(jù)，讀取G7114G1314位在G2081，高位在G2530，數(shù)據(jù)格式如G159322212所示G452對應(yīng)的溫度計(jì)G12651G726G5415符號位S0G7114，G11464接G4570G1120G17839G2058位G17728G6454G1038十G17839G2058G727G5415S1G7114，先G4570補(bǔ)碼G2476G1038原碼，再計(jì)G12651十G17839G2058值G452A122A111A112A111A112A113A114A111A115A116A113A117A118A111A119A129A130A131溫度LSB溫度G48SBTHTLA132A133A132A133A134A135A136A137A138A134A135A136A137A1388位G38G53G38222電路設(shè)計(jì)本系統(tǒng)G1038多點(diǎn)溫度測試G452DS18B20采用G3818部供電方式，理論G990G2499G1209在一G7693數(shù)據(jù)總線G990G6358256G1022DS18B20，但G7114G19400應(yīng)用中發(fā)現(xiàn)，如果G6358接25G1022G1209G990的DS18B20仍舊有G2499能G1147G10995功G13803G19394G20076G452G2490G3818單總線長度也不宜G17241G1781980G48，否則也G1262G5445G2721到數(shù)據(jù)的傳輸G452在這G12193情況G991G6117G1216G2499G1209采用分組的方式，用單G10267G7438的多G1022G44G18O來驅(qū)G2172多路DS18B20G452在G4466際應(yīng)用中G17836G2499G1209G1363用一G1022G48OSFETG4570G44G18OG2487線G11464接和電源相連，起到G990拉的G1328用A107A139A109G452電路如圖2221G452123J1DS18B20AGNDVCC47KR3RES2VCCP10123J2DS18B20BGNDVCCP10123J3DS18B20CGNDVCCP10A110A111A112A111A112A111A114A113A140A141A142A143A144A110對DS18B20的設(shè)計(jì)，G19668要注意G1209G991G19394G20076A、對G11840件結(jié)構(gòu)簡單的單線數(shù)字溫度傳感器DS18B20G17839G15904G6817G1328，G19668要用G17751G1038G3809G7446的程序G4448G6116G452G13546G2058程序G7114G5529G20047嚴(yán)格按G14467G10267數(shù)據(jù)手冊提供的有關(guān)G6817G1328G20046序G17839G15904，讀、寫G7114G19400G10267程序要嚴(yán)格按要求G13546寫G452尤其在G1363用DS18B20的高測溫分辨力G7114，對G7114序及電氣G10317G5627參數(shù)要求G7368高G452B、有多G1022測溫點(diǎn)G7114，應(yīng)考慮系統(tǒng)能G4466現(xiàn)傳感器出錯(cuò)G14270G2172指示，G17839G15904G14270G2172DS18B20序G2027號和G14270G2172排序，G1209減少調(diào)試和維護(hù)工G1328量G452XXXA100A101A102A103A104A105A145A146G38、測溫電纜線G5326議采用屏蔽4G14467雙絞線，其中一對線接G3332線G994信號線，G2490一組接VG38G38和G3332線，屏蔽層在源端單點(diǎn)接G3332G452DS18B20在G989線G2058應(yīng)用G7114，應(yīng)G4570其G989線G9950接牢固G727在G1016線應(yīng)用G7114，應(yīng)G4570VG38G38G994GND接在一起，G9950接牢固G452G14521VG38G38脫開未接，傳感器G2494送85的溫度值G452D、G4466際應(yīng)用G7114，要注意單線的驅(qū)G2172能力，不能G6358接G17819多的DS18B20，G2528G7114G17836應(yīng)注意最遠(yuǎn)接線距離G452G2490G3818G17836應(yīng)G7693據(jù)G4466際情況G17885G6333其接線拓?fù)浣Y(jié)構(gòu)G452223無線傳輸電路模塊無線傳輸模塊，采用集G6116G14467G10267G51T2262和G51T2272來構(gòu)G5326收發(fā)電路G452G51T2262G18G51T2272G7171G2500灣普城公司G10995G1147的一G12193G38G48OS工G14414G2058G17908的G1314功G13803G1314G1227位G17902用G13546G16311碼電路，G51T2262G18G51T2272最多G2499有12位G11A0A11G12G989G5589G3332G3348端管腳G11G5760空,接高電平,接G1314電平G12，任意組G2524G2499提供531441G3332G3348碼，G51T2262最多G2499有6位G11D0D5G12數(shù)據(jù)端管腳，設(shè)定的G3332G3348碼和數(shù)據(jù)碼從17腳G1030G15904輸出，G2499用于無線G17977控發(fā)射電路G452G13546碼G14467G10267G51T2262發(fā)出的G13546碼信號由G726G3332G3348碼、數(shù)據(jù)碼、G2528G8505碼組G6116一G1022G4448整的碼字，G16311碼G14467G10267G51T2272接收到信號G2530，其G3332G3348碼G13475G17819G1016次G8616G17751核對G2530，VT腳G6177輸出高電平，G994此G2528G7114相應(yīng)的數(shù)據(jù)腳也輸出高電平，如果發(fā)送端一G11464按G1315按G19202，G13546碼G14467G10267也G1262連G13505發(fā)射G452G5415發(fā)射G7438G8821有按G19202按G991G7114，G51T2262不接G17902電源，其17腳G1038G1314電平，所G1209315G48HG93的高G20069發(fā)射電路不工G1328，G5415有按G19202按G991G7114，G51T2262得電工G1328，其第17腳輸出G13475調(diào)G2058的G1030G15904數(shù)據(jù)信號，G541517腳G1038高電平G7411G19400315G48HG93的高G20069發(fā)射電路起G6403G5194發(fā)射G12573G5145高G20069信號，G541517腳G1038G1314平G7411G19400315G48HG93的高G20069發(fā)射電路G1584止G6403G14645，所G1209高G20069發(fā)射電路G4448全收控于G51T2262的17腳輸出的數(shù)字信號，從而對高G20069電路G4448G6116G5145度G19202控（ASG46調(diào)G2058）相G5415于調(diào)G2058度G1038100G705的調(diào)G5145G452在G17902常G1363用中，一般采用8位G3332G3348碼和4位數(shù)據(jù)碼，這G7114G13546碼電路G51T2262和G16311碼G51T2272的第18腳G1038G3332G3348設(shè)定腳，有G989G12193G10378G5589G2499供G17885G6333G726G5760空、接正電源、接G3332G989G12193G10378G5589，3的8次方G10386561，所G1209G3332G3348G13546碼不重G3809度G10386561組，G2494有發(fā)射端G51T2262和接收端G51T2272的G3332G3348G13546碼G4448全相G2528，G6177能G18209對G1363用，例如G4570發(fā)射G7438的G51T2262的第2腳接G3332第3腳接正電源，其G4439引腳G5760空，G18039G1052接收G7438的G51T2272G2494要第2腳接G3332第3腳接正電源，其G4439引腳