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┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊基于WSN的地铁车站温度数据采集系统设计第页摘要如今,在中国掀起了地铁项目建设的高潮,地铁作为方便快捷,时尚绿色的交通方式,已经成为了诸多市民出行的第一选择。民心所向,地铁项目在中国遍地开花结果。这就需要对地铁环境的安全性提出了较高的要求。其中尤为重要的一项是地铁站的温度检测和火灾报警。以往的温度数据的采集往往靠有线的设备,不仅布线繁琐,工作量大,而且信号在远距离传输的过程中易受其它电子设备的干扰,自身也存在着信号的衰减,增加了信号处理的难度。随着无线通信的快速发展,无线产品如雨后春笋般迅速增加,因此,利用无线的通信模块来实现数据的传输必将成为新的发展趋势。本设计是基于ZigBee的地铁站温度检测系统,利用无线射频网络ZigBee技术构架起树簇型网络。通过ZigBee终端上安装数字式温度传感器DS18B20进行温度采集,然后通过无线网络发送给上位机,以供检测。本设计重点介绍了温度传感器终端的设计,并详细分析了基于ZigBee技术的树簇状网络的构建及上位机显示设计。并通过搭建实验平台,对地铁站温度实现了采集,完成了基于ZigBee的地铁站温度检测系统的设计。关键词:ZigBee技术,温度检测,DS18B20,无线通信AbstractNowadays,therearesomanysubwayprojectsbeingconstructedinsomanycitiesinChina.Itissofast,convenientandfashionablethattakethesubwayhasbecamethefirstchoiceofmanypeopletravel.However,itrequireshighrequirementsforthesecurityofthesubwayenvironment.Whatisparticularlyimportantinasubwaystationisthetemperaturedetectionandfirealarm.Inthepast,temperaturedatacollectionoftenrelyonawireddevice,whichmeansnotonlycumbersomewiringandaheavyworkload,butalsosignalsusceptibletointerferencefromotherelectronicdevicesintheprocessoflong-distancetransmissionwiththesignalattenuation,thusincreasethedifficultyofsignalprocessing.Withtherapiddevelopmentofwirelesscommunication,wirelessproductsincreased.Wirelesscommunicationmodulefordatatransmissionwillbecomethenewtrends.ThedesignisasubwaystationtemperaturedetectionsystembasedonZigBee.SettinguparadiofrequencynetworkusingZigBeetechnologytoformtheframeworkofthetreeclusternetwork.InstalladigitaltemperaturesensorDS18B20tocollecttemperaturedatabyZigBeeterminal,thensenttothehostcomputerthroughawirelessnetwork.ThedesignfocusesonthedesignofthetemperaturesensorterminalandadetailedanalysisbasedonZigBeetechnologytreeclusterednetworkandPCdisplaydesign.Throughbuildingtheexperimentalplatformandcollectingthetemperatureofthesubwaystation,ZigBee-basedtemperaturesensingsystemofthesubwaystationdesignhasbeencompleted.Keyword:ZigBeetechnology,Temperaturedetection,DS18B20,Wirelesscommunications第PAGE\*MERGEF