基于无线传感器网络的农村供水厂水质监测节点的设计
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2020-03-17 10:57:56
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湖南农业大学学报(自然科学版)2016,42(2):212—216.DOI:10.13331/j.cnki.jhau.2016.02.020JournalofHunanAgriculturalUniversity(NaturalSciences)投稿网址:http://xb.ijourna1.cn基于无线传感器网络的农村供水厂水质监测节点的设计李亮斌,姜晟,王卫星,,,陈华强,焦国辉(1.华南农业大学电子工程学院,广东广州510642;2.国家生猪种业工程技术研究中心,广东广州510642;3.南方农业机械与装备关键技术省部共建教育部重点实验室,广东广州510642)摘要:为解决目前农村供水厂监测所存在的无线通信障碍、污染预警滞后和成本高等问题,设计了一款无线传感器网络节点,用于组网实现农村供水厂水质的监测。节点以STM32F103ZET6为核心,WLK01L39射频芯片及其外围电路作为无线通信模块,传感器模块由美国ASI公司的水质溶解氧、pH、温度复合传感器以及GlobalWater公司的WQ730浊度传感器组成。为节点编写了通信协议、时间同步算法和应用程序。在软件设计上,节点采用睡眠、苏醒工作机制来降低功耗。对节点的功耗和通信距离进行了分析和测试,组网试验结果表明,节点运行稳定可靠,组网系统在空旷地带有效通信距离达到500m,节点平均工作电流低于50mA,休眠电流低于25A。关键词:无线传感器网络;农村供水厂;水质监测;节点设计中图分类号:TP212.9文献标志码:A文章编号:1007—1032(2016)02—0212—05DesignofwirelesssensornetworknodeformonitoringwaterqualityofruralwatersupplyplantLiLiangbin,JiangSheng,WangWeixing,,,ChenHuaqiang,JiaoGuohui(1.CollegeofElectronicEngineering,SouthChinaAgriculturalUniversity,Guangzhou510642,China;2.NationalEngineeringResearchCenterforBreedingSwineIndustry,Guangzhou510642,China;3.KeyLaboratoryofKeyTechnologyforSouthAgriculturalMachineandEquipment,MinistryofEducation,Guangzhou510642,China)Abstract:Awirelesssensornetwork(WSN)nodeisdesignedformonitoringofruralwatersupplyplantinordertosolvetheproblemsofwirelesscommunicationbarrier,postponedpollutionwarningandhighcost,etc.ThenodeusesaSTM32F103ZET6asaprocessingcore.aWLK01L39RFchipwimperipheralcircuitsaswirelesscommunicationmodule,andasensormoduleconsistingofamutifuctionalsensorfromAmericanASIfordissolvedoxygen,pH,andtemperature,andaWQ730turbiditysensorfromGlobalWater.Thecommunicationprotocol,timesynchronizationalgorithmandapplicationprogramaredesignedforthenode.Asleepingandwakingupworkmodeisappliedtoreducepowerconsumption.Thecommunicationdistanceandpowerconsumptionofthenodeweretestedandanalyzed.Theresultsshowedthatthenodeworksstablyandtrustfully.Theavailablecommunicationdistanceisupto500mintheopenareaTheaverageworkingcurrentislowerthan50mAaswellasasleepingcurrentlowerthan25uA.Keywords:wirelesssensornetworks;ruralwatersupplyplan
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