研究论文（Articles）基于TDMA的战场无线传感器网络节点低功耗通信协议实现穆磊，姜春兰，李明北京理工大学机电工程学院，北京100081摘要为迎接新军事变革下的信息化战争，武器系统平台网络化已成为网络中心战（NCW）的发展趋势，战场无线传感器网络已受到世界各军事强国的重视。时分多址（TDMA）技术将无线信道按时隙分配给不同用户，因其可靠性和稳定性在无线通信领域得到广泛应用。针对战场无线传感器网络通信协议低开销低功耗的要求，分析了TDMA通信协议的原理和实现的难点，结合单片机MSP430F449和无线收发芯片CC2500设计并实现了一种适合战场应用环境的低功耗TDMA通信协议，详细介绍了战场无线传感器网络节点平台的组成和低功耗通信协议软件实现。经过实验验证，该协议运行可靠，扩展性、灵活性好，代码量小，在无数据收发时处于低功耗模式，适合各种低功耗的无线传感器网络应用。关键词无线传感器网络；低功耗；TDMA；MSP430F449；CC2500中图分类号TN92文献标识码A文章编号1000-7857（2010）18-0075-05ImplementationofLow-PowerCommunicationProtocolBasedonTDMAforBattlefieldWirelessSensorNetworkNodesMULei,JIANGChunlan,LIMingSchoolofMechatronicalEngineering,BeijingInstituteofTechnology,Beijing100081,ChinaAbstrActTomeettheneedsofinformationwarfarefortheRevolutioninMilitaryAffairs(RMA),networkedweaponsystemplatformsbecomeadevelopmenttrendofNetworkCentricWarfare(NCW).Thebattlefieldwirelesssensornetworkshaveattractedmuchattentionoftheworld'smilitarypowers.TimeDivisionMultipleAccess(TDMA)technologyallowsseveraluserstosharethesamefrequencychannelbydividingthesignalintodifferenttimeslots,anditiswidelyusedinthewirelesscommunicationforitsreliabilityandstability.Consideringthelightweightandlow-powerrequirementsofthecommunicationprotocolforbattlefieldwirelesssensornetworks,theprinciplesanddifficultiesintheapplicationsofTDMAcommunicationprotocolareanalyzedintheaspectsofhardwareandsoftwareseparately.Alow-powerTDMAcommunicationprotocolforbattlefieldenvironmentsisdesignedandimplementedwithMSP430F449mixedsignalmicrocontrollerandCC2500low-cost2.4GHzRFtransceiver.Thebattlefieldwirelesssensornetworknodesplatformandtheimplementationofthelow-powercommunicationprotocolarediscussedindetail.Theexperimentalresultshaveverifiedthereliability,scalabilityandflexibilityoftheprotocol.Also,itisshowntorequireasmallamountofcodesandtostayinalow-powerstatewhenthereisnowirelesscommunicationdata.Thus,itissuitableforvariouslow-powerwirelesssensornetworkapplications.Keywordswirelesssensornetworks;low-power;TD