基于无线传感器网络的远程医疗监护系统设计

I摘要远程医疗监护借助于单片机、PC机、传感技术和现代无线通信技术，是一种体积小、功耗低、实时安全的便携式人体健康参数无线监测系统。在节点的设计中，包括生理信息与数据采集单元、中央处理单元、无线数据通信单元、电源单元等部分组成;生理信息与数据采集单元负责监测被监护对象的生理信息的采集、调理和数据转换;中央处理单元负责控制整个节点的处理操作、路由协议、同步定位、功耗管理、任务管理等;无线传输单元负责与其他节点进行无线通信，交换控制消息和收发采集数据。围绕CC2420和MSP430F149两个核心器件，以脉搏传感器为信息采集前端，提取脉搏信号，经由电荷放大、滤波、上频陷波、信号整形等调理电路，传输至MSP430单片机进行处理后，再由CC2420为核心的射频模块无线发送至远端节点，远端节点将接收到的信息传递给后端的主机，将患者的生理数据贮存并分析。关键词:远程医疗监护,无线传感器网络,802.15.4/Zigbee,WLAN,Medicinalapplications,wirelesssensornetworks,802.15.4/Zigbee,WLANABSTRACTInthepresenceofsinglechip,wirelesscommunicationtechnology,basedontheparametersofhuman'ssensingtechnology,microcomputer,andmodernthispaperpresentsahealth,whichissmallwirelessmonitorsystemlowpowerconsumption,Inthissystem,TheauthordesignedthewirelesssensornetworkdemonstrationsystembasedZigbeetechnology.Thenitisintroducedthedesigningofthenetworknodesasthehardwareplatform,includingthetestingandsurveyingunit,signalprocessingunit,networktransmissionunitandsoon.Theexaminationandsurveyunitisresponsibletomonitorphysiologicalinformationofthepatientgathering,adjustingandthedataconversion.Inthisdesign,thedatacollectionunitmainlytakesthepulsesensorastheexample.Thecentralprocessingunitisresponsibletocontroltheprocessingoperation,therouteagreement,thesynchronizedlocalization,theconsumptionpowermanagement,thetaskmanagementandsoonofentirenodes.Thewirelesstransmissionunitisresponsibletocommunicatewithothernodes,exchangecontrollinginformationandreceivingandsendingdata.TheCC2420andtheMSP430F149areusedasthemainchipsofthesystem.SensorisusedastheinformationgatheringdetectortodistillthepulsesignalwhichistranslatedtoMSP430chipthroughenlarges,thefilter,thelaborfrequencybywayoftheelectricKeyWords:Medicinalapplications;wirelesssensornetworks;802.15.4/Zigbee;WLANII目录摘要...................................................................................................................................................................IABSTRACT...............................................................................................................................................................I0引言....................................................................................................................................................................11绪论...................................................................................................................................................................11.1远程监护概述........................................................................................................................................11.2远程监护的研究背景和意义.................................................................................................................21.2.1研究背景......................................................................................................................................21.2.2研究意义......................................................................................................................................21.3国内外相关研究.....................................................................................................................................22医疗监测原理与系统设计思想........................................................................................................................32.1医疗监测原理.........................................................................................................................................32.2无线通信技术.........................................................................................................................................32.3系统设计思想.........................................................................................................................................33无线监护传感器节点的设计............................................................................................................................53.1无线传感器节点结构框图.....................................................................................................................53.2无线监护传感器节点的硬件设计.........................................................................................................53.2.1MSP430系列单片机及其外围电路...........................................................................................53.2.2脉搏测量电路的设计..................................................................................................................73.2.3通用模拟信号处理接口..............................................................................................................83.2.4电源处理部分............................................................................................................................113.2.5Zigbee无线数据通信模块........................................................................................................113.2.6预留人机界面............................................................................................................................133.3无线监护传感器节点的底层代码设计...............................................................................................153.3.1底层软件整体构架............