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1、同濟(jì)大學(xué)軟件學(xué)院碩士學(xué)位論文基于AVR單片機(jī)無(wú)線通信系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名:王義申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):軟件工程指導(dǎo)教師:張晨曦;劉依20081201摘要今天我們已經(jīng)進(jìn)入了一個(gè)無(wú)線技術(shù)無(wú)所不在的時(shí)代。在家中,使用便利的無(wú)線電話;出門在外使用手機(jī)與遠(yuǎn)方的親人通話、發(fā)短消息;開(kāi)車,6PS系統(tǒng)為我們導(dǎo)航指路;工作,使用無(wú)線網(wǎng)卡可以隨時(shí)隨地地進(jìn)行網(wǎng)上辦公等等。隨著技術(shù)的進(jìn)步,無(wú)線通信和無(wú)線網(wǎng)絡(luò)將迅速地向我們同常生活中的各個(gè)方面擴(kuò)展,不久的將來(lái)我們大部分的電子產(chǎn)品都將是無(wú)線并可隨時(shí)在線的,一個(gè)無(wú)線社會(huì)很快就將成為
2、現(xiàn)實(shí),并將深刻改變?nèi)藗兊纳罘绞?。在許多測(cè)控現(xiàn)場(chǎng)中,‘傳統(tǒng)的數(shù)據(jù)通信是通過(guò)有線電纜實(shí)現(xiàn)的。隨著射頻技術(shù)、集成電路的發(fā)展,無(wú)線通信功能的實(shí)現(xiàn)越來(lái)越容易,數(shù)據(jù)傳輸速率也越來(lái)越快,抗干擾能力也越來(lái)越強(qiáng),加之短距離無(wú)線數(shù)據(jù)傳輸技術(shù)成熟,功率小,功能簡(jiǎn)單,攜帶方便,開(kāi)發(fā)簡(jiǎn)單快速,使得其在嵌入式短程無(wú)線產(chǎn)品中得到廣泛的應(yīng)用。本文提出了一種基于無(wú)線模塊nRF905的無(wú)線數(shù)據(jù)通信系統(tǒng)的總體設(shè)計(jì)方案和實(shí)現(xiàn)方法。系統(tǒng)采用高速度低功耗單片機(jī)ATMEAGl6L作為主芯片,nRF905作為無(wú)線收發(fā)模塊,利用SPI口實(shí)現(xiàn)雙向通信
3、,SPl支持高速數(shù)據(jù)傳輸,從而滿足了射頻帶寬的要求。nRF905提供了強(qiáng)大的跳頻機(jī)制以及大量的頻道支持,可以用在許多特殊的場(chǎng)合。由于采用較完善的軟硬件設(shè)計(jì)和抗干擾措施,保證了系統(tǒng)工作的安全性和可靠性。本系統(tǒng)集數(shù)據(jù)采集、無(wú)線數(shù)據(jù)通信、串行通信于一體,可以很方便地實(shí)現(xiàn)點(diǎn)對(duì)點(diǎn)及點(diǎn)對(duì)多點(diǎn)無(wú)線數(shù)據(jù)通信,廣泛應(yīng)用于遙感、遙控、無(wú)線抄表、工業(yè)數(shù)據(jù)采集及家庭自動(dòng)化等領(lǐng)域。關(guān)鍵詞:ATMEGAl6L,nRF905,DSl8820,LCDl602,無(wú)線通信AbstractTodaywehaveenteredintoall
4、eraofubiquitouswirelesstechnology.,n地wirelessphones,mobilephones,GPSnavigationsystemandwirelessnetworkcardcanbeavaibableandconvenientforpeopletouseanytimeandanywhere.Withtheadvancementoftechnology,wirelesscommunicationsandwirelessnetworkswillquicklyaffe
5、ctallaspectsofourdailylife.Andmostoftheelectronicproductswillbewirelessandonlineatanytimeinthenearfuture.Asocietywithwirelesstechnologywillbearealitysoonandwillchangethelifestyleofpeopleprofoundly.Traditionaldatacommunicationsarerealizedbythecableinmany
6、monitoringandcontrollingsites.Wimthedevelopmentoftheradiofrequencytechnologyandintegratedcircuits,therealizationofwirelesscommunicationfunctionbecomeseasierandeasier,datatransferratebecomesmuchfasterandfasterandtheanti-interferencecapabilitybecomesstron
7、gerandstronger.Andwiththematureofshort-rangewirelessdatatransmissiontechnology,combinedwithitssmallpowerandsimplefeaturesandbeingeasytocarryandrapiddevelopment,theembeddedshort-rangewirelessproductshavebeenwidelyused.TIlispaperproposestheoveralldesignpl
8、anandtherealizationmethodofonel【indofwirelessdatacommunicationsystembasedonthewirelessmodulenRF905.111esystemuseshigh—speedandlow-powersingle-chipATMEAGl6LaSthemainchip,nRF905asawirelesstransceivermodulesandtheSPIporttoachieveatw