汽车维修和汽车网络技术上的研究

汽车维修和汽车网络技术上的研究
介绍
随着科学技术的发展,越来越多的人已经注意到了互联网这个东西.在物联网技术研究的所有领域已成为全球的I.个重要的发展战略,尤其是发达国家.汽车产业是国民经济的重要支柱产业,汽车网络技术成为国民经济的第I.选择.而在中国,汽车网络的研究技术被认为是第III个重大专项任务.汽车维修技术作为工业的发展水平高低的重要标志,与汽车工业的健康发展有直接的关系.在智能化的运用物联网技术识别,定位,跟踪,监测,信息传输和管理快速,准确,方便,和其他的优势,I.个新的技术变化是实现汽车维修中的重要研究课题.虽然汽车网络在汽车维修技术的研究仍然是在探索阶段,但可以预期的的是,网络技术的汽车维修模式将完全颠覆传统汽车维修模式,这样的质量和服务水平将给汽车维护带来实质性的变化.本文总结了汽车网络技术的特点和研究对车辆的维护结构,维修汽车的的过程和专门的网络技术.
与车联网关联的汽车维修功能
车联网是Internet的I.个子系统的东西:车配有独特的电子密码EPC标签,数据采集等.通过安装车射频识别技术(RFID)或无线通信技术,人们可以提取和使用属性信息,把动态信息在信息网络平台上用静态数据来表示车辆.以这种方式,汽车网络能有效地监测和提供根据不同的功能要求的服务所有车辆的运行状态.维修车辆任务和特点,车联网技术具有突出特点.
A.为了实现车辆的唯I.标识
它可以编码I.个人的车,但不是I.个笼统的大类的.它可以通过独特的履行访问单个车标识符在车辆上并利用信息网络平台.
B.车辆信息的实时监控
我们可以通过监控互联网,无线通信,采用卫星定位,无线射频识别技术对车辆做连续性跟踪.在车上的已安装的读卡器接口端子,可读取关于车辆通过射频扫描信息,实现车辆信息的实时监控,并通过互联网发送数据.
C. *好棒文|www.hbsrm.com +Q: ^3^5^1^9^1^6^0^7^2^* 
要实现自动化无接触处理车辆的信息
车联网技术结合车载网络(AC网络),移动通信网(艾网)与互联网(IP网络),并使用频繁的无线电技术或无线通信技术来实现的非接触式的双方向处理空间的整合和信息交流,它可实现动态信息高效管理,不仅提高了信息传递的速度,而且还有效地降低了维护成本.
D.为了让系统容易实现每I.个步骤的信息共享
车辆的信息带来了电子标签.I.旦车辆进入信息网络平台,每I.操作步骤的功能能自动记录车辆信息,实现信息共享
E.为了实现车辆的智能管理
车联网技术不仅提供智能的专业服务,而且还利用城市交通系统,社区信息网络系统实现全面智能化管理汽车
车联网技术的汽车维修结构
汽车维修产业,目前绝大多数企业仍采用传统的被动式维护模式,即以好客之门"的形式.这就是说,在维护站点的维护人员,总是在被动地等待车辆的到来.只有需要维修的车辆到来后,维修人员才可以开始具体的车辆修理.虽然如IVS的I.些高级别维修店或卖场纷纷推出了I.些互联网的专家诊断或故障诊断系统,实际上并没有I.个真正改变了汽车维修服务模式.车联网技术将从根本上改变
传统的维护模式,提供快速,简便,更加人性化和高效的维修服务.下面的步骤是讨论了车辆维修的结构和自动维修过程:
A.车联网的总体框架
车联网是通过车载网络,无线通信网络和因特网形成的.数字I.显示了总体框架:
在车联网的车辆都必须有I.个完整的在车载网络通信系统.它不仅可以处理车辆的内部信息(如发动机,ABS装置等),也可随着互联网和全球定位通信以及无线来进行卫星跟踪.另外,汽车必须嵌入I.定数量的电子标签,可反映关键部件的车辆的信息.电子标签可以完成在RFID和无线通信网络的动车和其他项目由之间的信息传输.下I.步,驾驶员必须有安装的显示类型,键盘和语音控制信息终端等设备.这些设备可以通过接收或发送信息操作终端显示控制装置,保持和互联网平台的接触,与汽车有关的节点的无线电联络(包括:汽车制造商,经销商,服务站,车辆管理,智能交通系统等)
随着物联网技术的发展,车辆的I.个重要分支,网络所使用的各种先进技术(如传感器技术,数据处理,通信技术,网络技术,自动控制技术等)集中在各方面运输.此外,它可以创建实时,准确,高效的运输管理控制和综合服务体系.
B.车联网技术的汽车维修结构
物联网具有采集,传输和处理的优势.它使相对独立的各汽车维修方面,通过车联网形成有机结合.图II显示出了I.个网络技术形成的汽车维修汽车架构.
车辆和司机是自动的感知维护结构.他们通过在车辆上的有源标签派维修服务信息,传感设备通过电子互联网的网络通信系统和信息终端的显示控制装置
通信基站和卫星和汽车维护通信的网络层结构.他们通过有线和无线相关的节点网络带宽来发布维护信息.
汽车生产企业的技术中心,维修站等都是汽车维修应用层结构.这些节点接收车辆的实时分析,维护信息处理和完整的自我操作处理.如:故障处理程序,选择维修站点,实时监控服务流程等
汽车维护结构车联网技术,是I.种aomplete和有效的闭环系统,因此,这种结构的形成具有深远意义,在提高车辆维修的水平上服务效果显著.
C.根据汽车网络技术的车辆维修过程
接着,探讨网络技术在汽车维修程序通过的汽车维修和汽车保养两个方面
车联 *好棒文|www.hbsrm.com +Q: ^3^5^1^9^1^6^0^7^2^* 
网的汽车维修模式
在车辆的传统维护模式方面产生的技术革新.它可以在提供高效服务维修方式的同时,给予维修质量,维修率,个性化服务等诸多方面的优势.其优点可以总结如下:
方框I.它可以方便地使用有源电子标签.该标签有存储汽车信息的能力,且能够可靠地嵌入在汽车内,I.记录I.系列服务.
方框II显著提高了维修率.在需要维修和维护的车辆到来之前,该维修站已经准备妥当,使维修时间缩短.
方框III服务质量可以得到保证.保养站可以从制造商的技术服务中心得到专业的指导和技术,进I.步提高维修质量.
方框IV标准化的汽车维修.维修站根据由技术中心给予严格和技巧来修理保养车辆,避免保养的随意性;而在抢修现场,使维护工作更规范,更合理.此外,它提高了车辆的安全性
方框V降低维护成本.它是通过服务站与网络连接的,其维修费用(能对备品备件的供应商进行比较价格,选择以最低的价格来建立)低.
方框VI产生大量的不可用在传统的汽车维修的维修服务.它可以根据根据车的保养工作,预测车辆状况,并提供特殊服务,这I.点,传统的车辆维修显然不能能做到.
方框VII维护业主的合法权益.当有I.个服务质量问题,车主可以通过储存在车联网上的维护数据作为证据来保护他自己的利益.当然,维修站也可以使用这些维护数据来避免和减少无理取闹的人,以确保正常生产生活秩序
方框VIII先进的汽车维修模式.强大的网络平台,可以诊断并治疗相关统计数据,很快实现先进的诊断组合技术.因此,很容易实现先进的维修方式,如煤层气和RCM.
方框IX电动汽车和卡车在网络中的应用是比较容易实现的.电动汽车是未来车辆的方向发展,它们更容易使用利用互联网,无线通信,卫星定位,自动控制技术来实现精确控制.
I.些需要解决的以轿车车辆维修服务网络技术的关键问题
车联网是I.个庞大的信息网络,通过车辆,道路,行人,车辆构成,制造商,维修商,管理人员串连在I.起.为了实现汽车维修的理想服务效果,它必须满足以下的相关要求:
方框I.制定和完善为汽车网络制定的法律体系.如在相关节点的I.些信息,车联网是共享的,它很容易被窃取.I.旦重要信息(如维护公司的商业信息,商业秘密,个人信息等)被透露,它很容易受到恶意攻击和破坏.他们将直接影响到整个汽车网络系统的安全性.完善法律规章可以为车联网的推广和应用提供坚实的法律保障.
方框II制定基础设施,和网络技术的共同标准.有必要制定I.般全国甚至全球网络信息的协议,使网络通讯更加流畅和快速.为了解决在国家间技术标准的差异,知识产权,垄断意识和其他问题,为此需要提高组织机制和协调机制,引发众人的兴趣和加深与在设备制造商和服务运营公司等相关领域的国外研究机构的通信联络.
方框III具有高水平的服务理念,遵守信用.在汽车的每个网络节点必须具有很高的服务水平环境,保持诚实守信,以确保信息网络的质量.否则,将直接维修保养的质量.完整的车联网技术是保证,它提供了I.种新型的车辆维修保养服务模式.在全国车联网技术的背景下,发展战略,相关部门应加紧传感器技术,数据处理,通信技术,网络技术,自动控制技术的研究及分配充足的人力,物力和财力.尤其是汽车行业需要加强交流与合作,以通信行业为例,进行通信产业的信息汇总以把握汽车行业的需求.以这种方式,就可以建立I.个实际的,全面的汽车挂网,,实现车辆在车联网维修服务模式下的维护于修理.
总结
完整的汽车网络技术为I.种新的汽车维修服务类型提供了保证.在国家的发展战略及网络技术条件下,相关部门应加快加强传感器技术,数据处理,通信技术,网络技术,自动控制技术的研究和分配,保障充足的人力,物力和财力.汽车行业需要加强,尤其是和通信行业的交流和合作.这样,他们可以建立I.个实用的,综合车联网络的,新汽车维修服务模式下的汽车网络.
附件II:外文原文(复印件)
StudyonAutoMaintenanceandFrameBasedon
CarNetworkingTechnology
Abstruct
Developmentofcarnetworkingtechnologywillcausesignificantchangesonautomaintenanceindustrymode.Thispapernotonlysummarizestheoverallarchitectureandtechnicalfeaturesofthecarnetworkingandestablishesthevehiclemaintenancestructureswith
diagramundertheconditionsofcarnetworkingtechnologyintypicalcaseformFrommaintenanceandrepairmaintenanceprocessesisdiscussedIntheformofatypicalcaseundertheconditionsofcarnetworkingtechnology.
Featuresweresummarizedwiththepatternofvehiclemaintenanceandrepair.Finally,thispaperputsforwardseveralkeyissueswhichneedsolvinginautomaintenanceservices.
INTRODUCTION
Withthedevelopmentofscienceandtechnology,moreandmorepeoplehavepayattentionontheInternetofthings.ResearchesontheInternetofthingstechnologyinallfieldshavebecomeakeyofdevelopmentstrategyfortheglobal,especiallythedevelopedcountries[I.-IV].Theautomotiveindustryisanimportantpillarindustryofnationaleconomyandcarnetworkingtechnologyisbecomingthemostimportantbranchforfirstchoiceofdemonstrationofthings.TheresearchesoncarnetworkingtechnologyhavebeenthoughtasthethirdspecialmajorprojectsinChina.Automaintenancevehicletechnologyisconsideredasanimportantindicatorofthelevelofindustrialdevelopment,directlyrelatedtothehealthydevelopmentofautomobileindustry.InintelligentuseofInternetofThingstechnologytoidentify,locate,track,monitor,informationtransmissionandmanagementofrapid,accurate,convenient,andotheradvantages,thenewtechnologytoachievechangesinautomaintenanceisanimportantresearchtopic.Althoughthecarnetworkingtechnologyresearchintheautomotivemaintenanceisstillintheexploratorystage,butcanbeexpectedcarnetworkingtechnologybasedonautomaintenancemodewillcompletelyoverturnthetraditionalautomaintenancemode,sothatthelevelofqualityandserviceauto
maintenancesubstantivechanges.Thisarticlesummarizesthetechnicalcharacteristicsofthecarnetworkandstudyonthevehiclemaintenancestructures,maintenanceprocessesandfeaturesundertheconditionsofcarnetworkingtechnology.
CARNETWORKINGTECHNICALFEATURESRELATEDONAUTOMAINTENANCE
ThecarnetworkingisasubsystemofInternetofThings:vehiclesareequippedwithuniqueelectroniccodeEPCtags,dataacquisitionandsoon.Vehiclesareinstalledradiofrequencytechnology(RFID)orwireless
communicationtechnologyandpeoplecanextractandusepropertyinformation,staticanddynamicinformationofallvehiclesontheinformationnetworkplatform.Inthisway,thecarnetworkingcaneffectivelymonitorandprovideservicesdependingonthefunctionalrequirementsoftheoperationalstatusofallvehicles.Forvehiclemaintenancetasksandfeatures,carnetworkingtechnologyhasthe
followingoutstandingfeatures.
A.Torealizeuniqueidentificationofvehicles
Itcanencodeanindividualcarbutnotaclassofvehicles.Itcanfulfillaccesstoanindividualcarbyuniqueidentifieronthevehicleandtheuseofinformationnetworkplatform.
B.Real-timeMonitoringofvehicleinformation
Wecandocontinuousvehicletrack,monitorthroughtheInternet,wirelesscommunications,satellitepositioning,radiofrequencyidentificationtechnology.
Anyterminalswhichhaveinstalledreader,canreadinformationaboutvehiclesbyradiofrequencyscanning,andrealizereal-timemonitoringofvehiclesinformationbytheInternettransmittingfunction.
C.Torealizeautomaticnon-contacthandlingofvehiclesinformation
Carnetworkingtechnologycombinesin-vehiclenetwork(ACnetwork),mobilecommunicationnetwork(AInetwork)withInternet(IPnetwork),andusesthefrequentradiotechnologyorwirelesscommunication
technologytorealizedouble-directionofnon-contacthandlingofspaceintegrationandinformationexchange.Itcanrealizeefficientmanagementofdynamicinformation,notonlyimprovesthespeedofinformationtransmission,butalsoreducesmaintenancecosteffectively.
D.Torealizeinformationsharingofeverystepsofsystemeasily
Theinformationofvehicleshasbroughtelectronictag.Oncethevehiclesgointotheinformationnetworkplatform,everyeffectstepcanrecordtheinformationofvehiclesautomaticallytorealizeinformationsharing.
E.Torealizeintelligentmanagementofvehicles
Carnetworkingtechnologynotonlyprovideintelligentsupplyofprofessionalserving,butalsouseurbantransportationsystems,communityinformationnetworksystemtorealizecomprehensiveintelligentmanagementofvehicles.
AUTOMAINTENANCESTRUCTUREBASEDONCARNETWORKINGTECHNOLOGY
Currentlythevastmajorityofautomobilemaintenanceenterprisesarestillusingthetraditionalpassivemaintenancemode-"takethedoorofhospitality"form.Thatistosay,maintenancepersonsonmaintenancesiteofvehiclesalwayswaitforthearrivalofvehiclesnegatively.Onlyafterthearrivalofvehiclesinneedofrepair,maintenancepersonnelcanbeginonthespecificvehicleneedsrepairs.WhilesomehighlevelofIVSrepairingshopsorstoreshaveintroducedsomeexpertdiagnosisorfault
diagnosissystemInternet-based,thereisnorealchangeinautomaintenanceservicesmode.Carnetworkingtechnologywillfundamentallychangethetraditionalmaintenancemode,providefast,simple,morehumaneandefficientmaintenanceservices.ThefollowingstepistodiscussthevehiclemaintenancestructuresandAutoMaintenanceprocess.
A.Generalframeworkofcarnetworking
Thecarnetworkingisformedbyin-vehiclenetwork,WirelesscommunicationnetworkandtheInternet.FigureI.showstheGeneralframework.Vehiclesinthecarnetworkingmusthaveacomplete
in-vehiclenetworkcommunicationsystem.Itnotonlycanhandlethevehiclesinternalinformation(Suchasengine,ABSdevices,etc.),butalsorealizewirelesslycommunicationwiththeInternetandglobalpositioningandtrackingviathesatellites.Inaddition,thecarmust
embedacertainnumberofelectronictagswhichcanreflecttheinformationofthevehicleofkeycomponents.TheelectronictagscancompletethetransmissionofinformationbetweenthemovingcarsandotheritemsbytheRFIDandwirelesscommunicationnetwork.Nextto
thedrivertheremustbeinstalleddisplaytype,keyboardandvoice-controlledinformationterminalcontroldevice.Thesedevicescanreceiveorsendinformationbymanipulatingtheterminaldisplaycontroldevice,maintainradiocontactwiththeInternetplatformandcontactallvehicle-relatednodes(Include:automobilemanufacturers,dealers,servicestations,vehiclemanagement,intelligenttransportationsystems,etc.)AsanimportantbranchofInternetofThings,carnetworkingisusedbyavarietyofadvancedtechnologies(suchassensortechnology,dataprocessing,communicationstechnology,networktechnology.
automaticcontroltechnology,etc)focusedonallaspectsofthetransport.Inaddition,itcancreatereal-time,accurate,andefficienttransportationmanagementandcontrol,andintegratedservicesystem.
B.AutoMaintenancestructurebasedoncarnetworkingtechnology
InternetofThingshastheadvantagesofinformationcollection,transmissionandprocessing.Itmakesrelativelyindependentaspectsofthevariousvehiclemaintenanceintointegratesorganicthroughcarnetworking.FigureIIshowstheformationofanetworkingtechnologybasedonvehiclemaintenancevehiclearchitecture.
FigureII.AutoMaintenancestructurebasedoncarnetworking
TechnologyVehiclesanddriversaretheperceptionofautomaintenancestructure.TheysendmaintenanceinformationtotheInternetviaactivetagsonthevehicle,electronicsensingdevicesnetworkcommunicationsystemandInformationterminaldisplaycontroldevice.Communicationbasestationsandsatellitesarethecommunicationnetworklayerofautomaintenancestructure.Theypassedthemaintenanceinformationtothe
relevantnodethroughthewirelessandwiredhighbandwidthnetwork.
Vehiclemanufacturertechnologycenter,maintenancestationandsoonareapplicationlayerofautomaintenancestructure.Thesenodesreceivereal-timeanalysisofvehiclemaintenanceinformationprocessingandcompletetheiroperation.Suchas:handlingfailureprogram,selectingtherepairsite,real-timemonitoringserviceprocesses,etc.
Automaintenancestructurebasedoncarnetworkingtechnologyisaaompleteandefficientclosed-loopsystem,thereforetheformationofthisstructurehasfar-reachingsignificanceinenhancingthelevelofvehiclemaintenanceservices.
C.Vehiclemaintenanceprocessbasedoncarnetworkingtechnology
Next,explorethenetworkingtechnologyincarmaintenanceproceduresbytwoaspectsoftheautorepairandcarmaintenance.
THECHARACTERISTICSOFVEHICLEMAINTENANCEMODEBASEDONCARNETWORKINGTECHNOLOGY
Vehiclemaintenancemodebasedoncarnetworkingtechnologyrevolutionizesthetraditionalmodeofvehiclemaintenance.Itcanprovideefficientserviceinthemaintenancemode,maintenancequality,maintenancerate,personalizedserviceandmanyotheraspects.Its
advantagescanbesummarizedasfollows:
Itisconvenienttouseactiveelectronictags.Thecarhaspowerandstoragecapacity,sotheworkcanbereliablyembeddedinthecar,signalingtheactivetagfar.
??Significantlyincreasethemaintenancerate.Themaintenancestationhaspreparedappropriatelybeforethebrokencararrivessothattherepairtimeisshorter.
??Servicequalitycanbeguaranteed.Maintenancestationcangetprofessionalguidanceandtechnicalservicesfromthemanufacturertechnologycenterandincreaseinmaintenancequality.
??Standardizationofthevehiclerepair.Maintenancestationrepairbrokencarsaccordingtotherepairtipsgivenbythetechnologycenterstrictlyandavoidthethearbitrarinessofdifferentmaintenancerepairsiteandmadethemaintenanceworkmorestandardizedandmorereasonable.Inaddition,itimprovesthesafetyofthevehicle.
??Reducemaintenancecosts.Itisthroughthenetworkofservicestations,maintenancecosts,sparepartssparepartssupplierstocompareprice,selectiontotheeffectofthelowestprice.
??Itcangeneratealotofrepairservicenotavailableintraditionalcarrepair.Itcanpredictvehiclemaintenancebasedoncarworkingandprovidespecialservicesthattraditionalvehiclemaintenancecan’tdo(suchas:activeservice,personalizedservices,intelligentmaintenance,
etc.).
??Maintainlegalrightsofowners.Whenthereisaservicequalityproblem,theownercanprotecthisowninterestsbytheevidenceofmaintenancedatastreamgivenbycarnetworking.Ofcourse,
maintenancestationcanusemaintenancedatatoavoidandreducevexatiouspersonstoensurethenormalproductionorder.
??Advancedautomotivemaintenancemode.Powerfulnetworkplatformcandiagnoseandtreatmentrelevantstatisticaldataquicklytorealizethecombinationofadvanceddiagnostictechniques.Therefore,itiseasytorealizeadvancedmaintenancemodesuchasCBMandRCM.
??Electriccarsandtrucksareeasiertoachievethematchingnetwork.ElectriccarsarethefuturedirectionofdevelopmentandtheyareeasiertousetheusetheInternet,wirelesscommunications,satellitepositioning,automaticcontroltechnologytoachieveprecisecontrol.
SOMEOFTHEKEYISSUESNEEDTORESOLVEINVEHICLEMAINTENANCESERVICEBASEDONCARNETWORKINGTECHNOLOGY
CarnetworkingisalargeinformationnetworkisconstitutedbyVehicles,roads,pedestrians,vehiclemanufacturers,maintenancecompanies,management.Inordertoachievethedesiredeffectofvehiclemaintenanceservices,itmustmeetthefollowingrequirementsrelated
links:
??Formulateandimprovelegalsystemforthecarnetwork.Assomeinformationinrelatednodeofcarnetworkingisshared,itiseasytobestolen.Oncetheimportantinformation(suchasthemaintenancecompanysbusinessinformation,tradesecrets,personalinformation,etc)isdisclosed,itisvulnerabletomaliciousattacksanddestruction.Andtheydirectlyaffecttheentirecarnetworkingsystem’ssecurity.Improvelawsandregulationscanprovideasolidlegalprotectionfor
thepromotionandapplicationofcarnetworking.
??Formulateinfrastructure,commonstandardsfornetworktechnology.Itisnecessarytoformulatenationalandevenglobalnetworkofgeneralinformationprotocoltomakethenetwork
communicationsmoresmoothandfast.Toaddressdifferencesinnationaltechnicalstandards,intellectualproperty,monopolyawarenessandotherissues,itneedstoimprovetheorganizationalmechanismsandcoordinationmechanismsofinterestanddeepenthecommunicationwithforeignresearchinstitutionsinrelatedfields,equipmentmanufacturersandserviceoperatingcompanies.
??Havingahighlevelofserviceconceptandcompliancewithcredit.Eachnodeincarnetworkingmusthaveahighlevelofserviceenvironmentandkeephonestandtrustworthytoensurethequalityofinformationnetwork.Otherwise,itwilldirectlyaffectthequalityof
servicemaintenance.
??AllRoadvehicleoperatorsjointhenetworking.Automotiveservicesystemincarnetworkingmustmeettheinformationsharing.Ifthereisnonetworktraffic,itwillcausethesysteminformationnotaccurateandreliable.Itgreatlyreducedlevelofmaintenanceservices.
??Formatthenewmobilebroadbanddatatrafficstructure.WhenInternetofThingshasformed,numberofuserswillincreasequicklyandmobilebroadbanddatatrafficwillalsobegrowthspurt.Operatorsneedtoensurethatincreasedtrafficfromthetechnicalcapacitytoreducenetworkcongestionandimproveconsumers’QoE(qualityofexperience).CarrierEthernetforexample,canbeveryeconomicaltoextendtohighbandwidthanddatatraffictodealwithemergency.
??Havinghigh-qualitysystemmaintenanceandmanagement.High-qualityvehiclemaintenanceandmanagementaretheguaranteesofcarnetworkingnormalandefficientwork.Management,maintenancedepartmentsincarnetworkingmusthaveastrongsenseofresponsibilitytorealizeintelligentmanagementandmaintenancesystem.
CONCLUSION
Completecarnetworkingtechnologyistheassurancetoprovideanewtypeofvehiclemaintenanceservicesmode.Inthecontextofnationalcarnetworkingtechnologydevelopmentstrategies,relateddepartmentsshouldintensifythesensortechnology,dataprocessing,communicationstechnology,networktechnology,automaticcontroltechnologyresearchandallocatesufficienthuman,materialandfinancialresources.Especiallytheautomotiveindustryneedstostrengthenexchangesandcooperationtocommunicationsindustry
andmakecommunicationsindustrygrasptheneedsoftheautomotiveindustry.Inthisway,theycanbuildapractical,comprehensivecarlinkednetworktorealizenewcarmaintenanceservicemodelsundercarnetworking.

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