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1、Dissertation/ThesisSubmittedtoHebeiUniversityofTechnologyforTheMasterDegreeofPhysicsElectronicsWIRELESSSENSORNETWORKTECHNOLOGYINTHEAPPLICATIONOFWATER-SAVINGIRRIGATIONbyWangQingruiSupervisor:Researcher.XuXiaoHuiNovember2012河北工業(yè)大學碩士學位論文無線傳感網(wǎng)絡(luò)技術(shù)在節(jié)水灌溉中的應(yīng)用摘
2、摘摘要摘要要要隨著無線信息傳輸技術(shù)的發(fā)展,無線傳感器網(wǎng)絡(luò)以其低功耗、低成本、低速率、近距離、短時延、高安全等特點,在農(nóng)業(yè)生產(chǎn)中引起高度重視,有效地解決了由于地理環(huán)境等因素帶來的布線不便、成本高等問題。課題根據(jù)農(nóng)業(yè)生產(chǎn)灌溉的實際需求,結(jié)合自動化技術(shù)、單片機技術(shù)、現(xiàn)代通信技術(shù)、傳感器技術(shù)、太陽能技術(shù)以及無線通信技術(shù)等領(lǐng)域的最新研究成果,設(shè)計了一個無線節(jié)水灌溉控制系統(tǒng)的方案。文中主要介紹了節(jié)水灌溉過程中無線組網(wǎng)及數(shù)據(jù)的傳輸?shù)裙δ堋8鶕?jù)課題及應(yīng)用對象的需求,在組網(wǎng)協(xié)議設(shè)計中,采用人工布置節(jié)點的方式將節(jié)點分布
3、于灌溉區(qū)各個監(jiān)測點,通過組建網(wǎng)絡(luò),將數(shù)據(jù)傳輸至上位機,上位機軟件對數(shù)據(jù)進行處理后,根據(jù)設(shè)定控制閾值,完成無人作業(yè)環(huán)境中對節(jié)水灌溉的智能控制。軟件組網(wǎng)仿真采用了基于cygwin虛擬環(huán)境的NS平臺,形象地描述了網(wǎng)絡(luò)的組網(wǎng)過程,進而選定星型組網(wǎng)拓撲結(jié)構(gòu)。文中提出了無線組網(wǎng)以及節(jié)點入網(wǎng)的方案,并對網(wǎng)絡(luò)的組網(wǎng)方案及網(wǎng)絡(luò)的維護做出了相應(yīng)的研究。系統(tǒng)硬件部分以單片機c8051F020作為主要處理器,無線通信模塊選用NRF905模塊作為無線收發(fā)器,設(shè)計了傳感器節(jié)點單元與匯集節(jié)點單元,根據(jù)模塊各自的功能擴展了相應(yīng)的外
4、圍電路。通過實驗測試,結(jié)合軟硬件平臺工作狀況,達到了系統(tǒng)設(shè)計的預(yù)計效果。對實驗數(shù)據(jù)進行了分析,并對所遇到的問題進行了解決。關(guān)鍵詞:::無線傳感器網(wǎng)絡(luò):,智能控制,節(jié)水灌溉i無線傳感網(wǎng)絡(luò)技術(shù)在節(jié)水灌溉中的應(yīng)用WirelessSensorNetworkTechnologyintheApplicationofWater-savingIrrigationABSTRACTWiththedevelopmentofwirelesstransmissiontechnology,wirelesssensornetwo
5、rkswithitscharacteristicsoflow-power,low-cost,low-rate,shortdistance,low-latency,highsecurity,agriculturalproductionandpaycloseattentiontosolvebecauseofgeographicalinconveniencebroughtaboutbyenvironmentalfactorssuchaswiring,thecostishigh.Topicsaccordin
6、gtotheactualneedsoftheagriculturalproduction,irrigation,combinedwiththelatestresearchresultsinthefieldofautomationtechnology,single-chiptechnology,moderncommunicationstechnology,sensortechnology,solartechnologyandwirelesscommunicationtechnology,designa
7、wirelesswater-savingirrigationcontrolsystemprogram.Thepaperintroducestheprocessofwater-savingirrigationinwirelessnetworkinganddatatransferfunctions.Networkingprotocoldesignissuesandtheneedsoftheapplicationobject,theartificialarrangementnodetonodedistri
8、butionofthevariousmonitoringpointsintheirrigatedareas,throughtheformationofthenetwork,thedataistransmittedtothehostPCsoftwarefordataprocessingcontrol,accordingtoasetthreshold,completeunmannedoperationenvironmentofintelligentcontrolofthe