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1、第10卷第16期2010年6月科學(xué)技術(shù)與工程V01．10No．16June20101671—1815(2010)16—4005—04ScienceTechnologyandEngineering⑥2010Sci．Tech．Engng．基于FPGA的可重構(gòu)無線傳感器網(wǎng)絡(luò)節(jié)點設(shè)計徐興王衛(wèi)星岳學(xué)軍(華南農(nóng)業(yè)大學(xué)工程學(xué)院，廣州510642)摘要提出了一種簡單的基于現(xiàn)場可編程門陣列(FPGA)模塊來實現(xiàn)可重構(gòu)無線傳感器網(wǎng)絡(luò)節(jié)點的方案。與傳統(tǒng)方案相比，新方案較為精簡，價格低廉，不再需要微控制器，大大減小了節(jié)點軟硬件復(fù)雜度，可實現(xiàn)無線傳感器網(wǎng)絡(luò)節(jié)點的快
2、速可重構(gòu)設(shè)計。通過將自適應(yīng)功率控制和低功耗媒體接入控制機(jī)制引入FPGA核，重構(gòu)的節(jié)點大大地降低了功率消耗，充分表明提出的可重構(gòu)設(shè)計方案是有效可行的。關(guān)鍵詞無線傳感器網(wǎng)絡(luò)節(jié)點現(xiàn)場可編程門陣列(FPGA)可重構(gòu)設(shè)計中圖法分類號TN914；文獻(xiàn)標(biāo)志碼AItisknownthatawirelesssensornetwork(WSN)consistsofspatiallydistributedautonomoussensorsto1FPGA-basednodedesigncooperativelymonitorl~hysicalorenvironm
3、entalcondi—tions，suchastemperature，sound，vibration，pressure，1．1TraditionalFPGAbasednodem0tionorD0Uutants[·2。Currently，theuseofFPGAformodularembed—．ThelatestI．eseaI℃herandad．vancedtechnologiesusedindesigningtransceivers，mi—dedapplicationsisrapidlyincreasing．High—speedFP—GA
4、hastheadvantageofflexibilitytocreatecustomcrochipsandFPGAcores，moveUStowardalowpower，hardwarewithsuficientperformancetosatisfymostap·lowpriceandmultifunctionalwirelesssensordesign．plications．Afterimplementation，thedesigncouldbeAnFPGAconsistsofalargenumberofreconfigu—repla
5、cedbyanApplicationSpecificIntegratedCircuitrablegatesforuseinsophisticateddigitalcircuits．Tra-(ASIC)whichischeaperinlargescaleproduction．ditionallyhardwarehasneverbeenSOeasytoreconfig·NowseveralgroupsarestartingtodesignFPGA—basedureorre-develop．Designmodificationscanbeimp
6、le—nodes[：mentedquicklyandeasily．Theadvantageofbeing1．1．1EMIschoolofengineering，Moroccoreconfigurableisthatitwillreducehardwarerequire-Thisdesignisanembeddedplatformimplemen—ments．Inthelastfewyears，highlevellanguageshavetinga32bitprocessor(NIOSII)onanFPGAcorebeendeveloped
7、toallowthetranslationofalgorithms(ALTERAcyclone)，externalFlashMemoryandusingdirectlyintohardwaredescriptions．ThepaperdescribesseveralinterfacessuchasSPI，UART，BusAvalonanovelwirelessnetworknodedesignschemebasedonandPIO．FPGA[引．1．1．2TyndallMoteThishardwareplatformisa25mm×25m
8、m2010年2月25日收到高等學(xué)校博士學(xué)科點專項科研基金聯(lián)合stackablesystemwhichiscomposedofamicrocon·項目(200805640010)、公益性行業(yè)(農(nóng)
