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1、浙江犬學碩.上學侮論文摘要基于無線能量傳輸的無線傳感系統(tǒng)是將傳感器技術、無線通信技術和無線能量傳輸技術相結合,以電磁耦合的方式給傳感器節(jié)點供電,并實現傳感測量和數據傳輸的系統(tǒng)。目前,有源的無線傳感系統(tǒng)在諸如食品運輸、倉庫管理、農業(yè)養(yǎng)殖、工業(yè)監(jiān)測等領域都有研究和應用,無線無源傳感系統(tǒng)目前以RFID傳感系統(tǒng)為基礎,主要用于食品安全檢測等領域。本文針對有源無線傳感器以及RFID傳感器的特點,提出并實現一種基于無線能量傳輸的溫度傳感系統(tǒng),具體包括以下內容:(1)無線能量傳輸電路設計和實現.通過對電磁耦合
2、無線能量傳輸特性的分析,設計了基于PCB線圈福合的無線能量傳輸電路,并通過諧振耦合以及阻抗變換等方法實現疏耦合無線能量傳輸,實驗驗證了理論推導結果。(2)傳感與通信電路設計和實現。設計了由主。副傳感器節(jié)點組成無線傳感系統(tǒng),并完成了射頻通信、溫度傳感及入機界面等電路的設計和實現。(3)無源傳感系統(tǒng)的軟件研發(fā)。以溫度傳感為例,根據副傳感器節(jié)點的低功耗要求,設計了帶有自動同步通信功能的節(jié)點軟件,實現了基于無線能量傳輸的無線無源溫度測量功能。最后,本文提出了有待進一步改進和研究的內容。關鍵詞:無線能量傳
3、輸RFID傳感器電磁耦合PCB線圈無線無源溫度測量111浙江大學頎上學位論文AbstractTheWirelessSensorSystembasedonwirelesspowertransfer,whichpowersthesensor-nodeswithelectromagneticcouplingandcompletesmeasurementanddatatransmission,integratessensortechnology,wirelesscommunicationtechnolo
4、gy,andwifelesspowertransfertechnology.Theactivewirelesssensorsystemisresearchedandappliedinlotsofdomainssuchasfoodtransportation,warehousemanagement,agriculture,andindustrialmonitoring.ThePassiveWifelessSensorSystemsarebasedonRFIDsensors,whichmainlyu
5、sedinfoodsecuritydetecting.ThisthesispresentsanewTemperatureSensorSystembasedonwirelesspowertransferinviewofthecharacteristicoftheactivewirelesssensorsystemandpassiveRFIDsensorsystem.Thecontentsinclude:(1)Designandimplementthewirelesspowertransfercir
6、cuit.Analysethecharacteristicofwirelesspowertransferbyelectromagneticcoupling,designthewirelesspowertransfercircuitbasedonthecoupledPCBwindingscircuit,andimplementtheloose-coupledwirelesspowertransferbymeansofresonancecoupling,impedancetransformandSO
7、on,whichvalidatesthetheoreticalresults.(2)Designandimplementthesensorandcommunicationcircuit.DesigntheWirelessSensorSystemthatcompfiseahostandaguestsensor-node,implementtheradiocommunication,temperaturesensorandinterfacecircuit.(3)Designthesoftwareof
8、thepassivesensorsystem.Designanodesoftwarewiththefunctionofatuo—synchronizedcommunicationaccordingtothecharacteristicoftemperaturesensorsystemandlow-powerdissipationoftheguestsensor-node,andimplementthepassivewirelesstemperaturemeasurementbasedonwife