Определение
High-definitionnetworkcamerareferstoanetworkthatcancontinuouslycaptureatmorethan12FPSandthemaximumresolutionisgreaterthan720P(1280*720),andevenreachesorexceeds1080P(resolution1920*1080)Camera.
Whenmeetingthe720PstandardintheabovedefinitionofHD,itcanbeunderstoodasamegapixellevel.Therefore,wealsocallahigh-definitionnetworkcameraamegapixelnetworkcamera.Camera.
Технически параметри
Технически параметри на HD мрежова камера:
процесор Hi3512;
Вграден 200MegapixelCMOS сензор;
Поддържа 1080P/15 кадъра, 720P/25 кадъра резолюция;
StandardH.264MainProfilelevel3videoalgorithm/MJPEGoptional
Обхват на потока: 1Mbps-8Mbps(H.264)/1Mbps-16Mbps(MJPEG
Аудиодомофон, гласово излъчване;
SD карта, може да поддържа до 32GBSD карта за съхранение;
1RS485 интерфейс;
1 превключвател вход, 1 превключвател изход;
Autoiris интерфейс
Характеристика
1.Стандарт за кодиране на MPEG-4: видеото използва стандартно кодиране и декодиране на MPEG4, поддържа формати за кодиране MPEG4 и CIF; поддържа PAL/NTSC видео изход.
2,supportsDHCP:availableforusersDHCP(DynamicHostConfigurationProtocol)establishestheworkingenvironmentofIPCAM.DHCPisaprotocolthatobtainsvariousparametersnecessaryforcustomerstooperateintheIPnetworkthroughnetworkequipment.Byusingthisprotocol,theworkloadofsystemmanagementisgreatlyreduced,andtheequipmentisminimized.TheIPaddressisautomaticallyaddedtothenetwork.
3. Мрежови функции: поддръжка на пълен TCP/IP протоколен клъстер, вграден уеб сървър и поддръжка на достъп до браузър.
4, Функция за управление на PTZ: електронна функция за панорамно накланяне, поддържаща много протоколи за кодиране и декодиране.
5. Функция на алармата: 1 алармен вход, 1 алармен изход.
6.Motiondetection:availableMulti-directionalmotiondetectionwithinthevisualrange,withfunctionssuchasshieldingalarmsandalarmlinkageoutput.
7.Usermanagement:multi-leveluserauthoritymanagement.Thesenioradministratorcancreate15operators,eachTheauthorityofeachoperatorcanbeset,andthesystemsecurityisbetter.
8,imagestorage:videoisstoredinstandardMPEG4format,supportsthird-partyplayerstoplayfiles;networkstorage,supportsFTP,SMTPalarmRemoteuploadofinformationsupportslocalstorageandSDcardstorage.
9.Mobilephoneremotemonitoring:WIFI,3Dhigh-definitionnetworkcamerascanperformmobilephoneremotevideomonitoringthroughwirelesssignals,andgrasptheinformationofthemonitoredpersonanytime,anywhere.
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Предимства
High-definitionisthetrendofthetimes.Inthishigh-definitionera,thehigh-definitiontechnologyofnetworkcamerasdeterminesitsdevelopmentdirection.Inthehigh-definitionera,thetechnologyofhigh-definitionnetworkcamerasTheadvantagesareasfollows:
Networked,multiplepeoplecansurftheInternetatthesametime,andmonitoringisnotrestrictedbytimeandplace
Voiceandvideoaredigitized,andthepicturequalityisclearThevideofilemanagementandstorageareeasytomanageandstorevideofiles.IthasfarsurpassedthegeneraltraditionalCCTVshootingpicturequalitymonitoringfunction,andcanintegrateidentification,search,trackingandothertechnologies.
Отдалечено архивиране
Easytoinstallandcanbeplacedanywhere(wirelessnetworktransmissionorPoEpowersupply)Thenetworkinfrastructureismature,noadditionalwiringcostsarerequired,andcostsaregreatlyreduced.
Лесна работа, висока мащабируемост и интеграция
Системата е стабилна, лесна за актуализиране и надграждане
Widelyusedinpeople’slivelihood,commercialandresearchpurposes
Combinedwith3Gmobilephones,simpleconstructionMobileremotemonitoringsystem
Той може да поддържа широкоекранен изходен режим на HDTV (16:9); покритието е по-широко и същата зона за наблюдение може да замени оригиналната камера с множество фиксирани точки и една многопосочна камера.
HD
Themega-pixelhigh-definitionhigh-speeddomecameraadoptsHitachiwidedynamic18xopticalintegratedhigh-definitionmovement,built-inembeddedLinuxoperatingsystem,andsupportsH.264MainProfile,BaselineProfile,MJPEG,JPEGandothervideoencodingprotocols,supportG.726,G.711,ADPCMmultipleaudioencodingprotocols,supportreal-time25-frame720P/1080Phigh-definitionimagestandard,isacollectionofvideocapture,imageAhigh-definition, високопроизводителна мрежова камера, която интегрира функции за обработка, видеопредаване, видеосъхранение и видеоуправление. Тя е насочена основно към нуждите на приложенията на пазара за видеонаблюдение от висок клас, който изисква относително висока яснота на изображението, включително: магистрали, банки, телемедицина, контролно-пропускателни пунктове за сигурност и други области.
производителност
Използване на високоефективен, мощен програмируем медиен процесор, едночипов SOC, вграден (ARM9+DSP) и високоскоростен видеокопроцесор, висока чувствителност, висок сигнален шум в сравнение с
състав
Мрежовите камери с висока разделителна способност обикновено се състоят от ленти, сензор за изображения, сензор за звук, A/D преобразувател, изображение, звук, мрежов сървър за управление, външна аларма, интерфейс за управление и др. Частична композиция. Сред тях основните са лещи и сензори за изображения.
Asthefront-endpartofthenetworkcamera,thelenshasafixedaperture,automaticaperture,automaticzoom,automaticzoomandothertypes,whicharethesameasanalogcameras.
Сензор за изображение, сензор за звук
Theimagesensorhastwomodes:CMOSandCCD.CMOSisacomplementarymetaloxidesemiconductor.CMOSismainlyasemiconductormadeofsiliconandgermanium.ThebasicfunctionsarerealizedbythenegativelychargedandpositivelychargedtransistorsontheCMOS.Thecurrentgeneratedbythesetwocomplementaryeffectscanberecordedandinterpretedintoanimagebytheprocessingchip.ThemainadvantageofCMOSforCCDisthatitsavespower.UnlikeCCDandCMOScircuitscomposedofdiodes,thereisalmostnostaticpowerconsumption.ThismakesthepowerconsumptionofCMOSonlyabout1/3ofthatofordinaryCCD.TheimportantproblemofCMOSisthatitoverheatsduetothefrequentcurrentconversionwhenprocessingfast-changingimages.Ifthedarkcurrentiswellsuppressed,itisnotabigproblem.Ifthedarkcurrentisnotsuppressedwell,itisveryeasytoappearnoise.
Приложение
1.Theapplicationofhigh-definitionnetworkcamerasinvideoconferences
High-definitionnetworkcamerasandlarge-screenTVscanquicklyformavideoconference,achieving2Holdameetingorholdadiscussionmeetingatthevenue.Andsupport10pointstowatchinrealtimethroughtheIPnetwork,playPPTpresentationswhileconductingvideoconversations,orshareaudio,videofiles,icondatafilesonthecomputerwiththeotherparty,andeasilybuildasmallvideoconferencesystem.
2.Theapplicationofhigh-definitionnetworkcamerasinteachingsystems
High-definitionnetworkcamerasandlarge-screenTVsorprojectionscanquicklybuildnetworkhigh-definitionvideoteachingsystemsandsupportremoteteachingandtraining.Itsupports10pointsofreal-timewatchingthroughtheIPnetworkwithoutaddingotherequipment,andmorestudentscanwatchlivevideoteachingthroughtheIPnetworkinrealtimethroughstreamingmedia.Regardlessofthedistancebetweentheschoolandthestudentsintheregionsorcities,thereal-timetransmissionofvideo,voice,anddatacanberealizedthroughthenetwork,andthestudentswhoarescatteredintheremoteclassroomsindifferentregionscanbetaughtandtrainedtothegreatestextent.Sharingofteachingresources.
ItisalsopossibletorealizeremoteteachingobservationsandopenclassesthroughtheInternet.YoungleadersandotherteachersandstudentscanobserveanyhonestclassscenesandmakevideosthroughtheInternettofacilitatetheevaluationoftheentirecourse.
3.Theapplicationofhigh-definitionnetworkcamerasinsecuritysurveillancesystems
Thehigh-definitionvideosurveillancesystembuiltwithhigh-definitionnetworkcameraswillbecometheupgradingequipmentofanalog,digitalandstandard-definitionnetworksurveillancesystemsproduct.
Aslongasthereisanetwork,real-timemonitoringcanbecompleted,andsimultaneousaccessofmultiplepointsandmultipleusersissupported.Itcanrealizeall-round,full-HDvideostereoscopicmanagementandmonitoring,andcancarryout24-houruninterruptedmonitoring,Videoandmanagementtocreateaharmoniousenvironment.
4.Theapplicationofhigh-definitionnetworkcamerasinotherareas
High-definitionnetworkcamerascanbeusedincourttrials,prisons,safecitiesandotherfields.
Тенденция на развитие
1. Резолюцията продължава да нараства
Therearemoremegapixels,1.3millionpixels,and2millionpixelsinthemarket.Pixels,other3millionpixels,5millionpixels,and8millionpixelsproductshavealsoappearedonthemarket.
2,COMS постепенно заместваCCD
Withthedevelopmentoftechnology,theperformanceofCMOSsensorsisrapidlyimproving.CMOSsensorhasafasterresponsespeedthanCCD,soitismoresuitableforthelargedatavolumecharacteristicsofhigh-definitionmonitoring.Fromamarketperspective,SONY,thetraditionalmanufacturerofCCDs,hasbeguntoshiftitsfocustoCMOSsensors,andalmostexclusivelyusesCMOSsensorsinitshigh-definitionnetworkcameras.
3,ISP(ImageSignalProcessing)
ByintegratingISP,notonlycanthesystemcostbegreatlyreduced,itcanalsogreatlyenhancethestabilityofthevideo,andoptimizetheimageOpticalperformance.Thisplaysanextremelyimportantroleinimprovingtheimagingqualityofhigh-definitionnetworkcameras.
4. Функциите за интелигентен анализ са по-практични
Intelligentanalysisfunctionsinclude:videoocclusionandvideolossdetection,videoconversiondetection,videoblurdetection,Videomotiondetection,statisticsonthenumberofentrancesandexits,crowdmovementandcongestionidentification,leftoveridentification,intrusionidentification,etc.
5.Стандартизация
WhetheritisONVIForPSIA,botharestandardsformedbyenterprisesspontaneouslyorganized,buttheyhavereceivedmoreandmoreresponsesfromenterprisesFromapointofview,itstillhasaveryimportantmeaning.Inthenextfewyears,standardizationwillbecomeapassportforhigh-definitionnetworkcamerastoenterthemarket.
Въпроси, изискващи внимание
1. Изборът на лещи за сигурност и наблюдение
Inthevideosurveillancesystem,thelensofmegapixelhigh-definitionnetworkcameraChoiceisalsoveryimportant.Therearemanytypesofsecuritysurveillancelenses,andthespecificationsaredazzling.Itisveryimportanttochooseasuitablelensinasurveillanceproject.
2. Фактори, на които не обръщайте внимание, когато купувате аленти
(1) Предотвратете фалшификати при покупка.
(2)Itmustbematchedwiththecamera,especiallythematchingoftheluminousfluxFvalue,sothatthecamerasensitivitycanachievethedesiredeffect.
(3)Megapixelcamerasgenerallyhavetopurchasematchingcorrespondingmegapixellenses.
(4) Вижте външния вид на материала, дали отговаря на спецификациите и интерфейса на CMOS/CCD, дали покритието е добро и вида на лещата (сферична/асферична).
(5) Като се има предвид средата на приложение, типът леща включва избора на широкоъгълни лещи, стандартни лещи, телеобективи, вариообективи и обективи с фиксиран фокус.
(6)Гаранционният срок на обектива.
(7) Тествайте лично качеството на обектива.
3.Pointsforpurchasinghigh-definitionmegapixelnetworkcameras
Judgingfromthecurrenthigh-definitionmegapixelnetworkcameraslaunchedinthedomesticmarket,thecompressionusedThemethodismainlybasedonMJPEG/MPEG4andH.264,andthereisnoclearerquantizeddataintermsofitsbandwidthandtransmissionrate,sothatalthoughusersunderstanditssuperhighimagequality,theystillhavesuchahighimagequality.Theimagecontinuityandthebandwidthrequiredfortransmissioncauseconfusion.Therefore,whenchoosingsuchproducts,youneedtopayattentiontothefollowingpoints:
(1)Knowtheactualbandwidth,transmissionrateandotherquantitativeindicatorsunderhigh-qualityimages,andconductascientificevaluationofthenetworkresourcesoftheproject.
(2)Използвайте фоточувствителен чипCCDилиCOMS?Ако схемата на чипа CCD,която (едноканална/многоканална) технология за "изходен баланс" е приета и дали честотата на кадрите отговаря на действителното търсене.
(3)Thematchingproblemofopticallens,industrial-grademegalensmustbeusedtogether,otherwisethehigh-definitionpicturequalityadvantagesofthecameracannotbereflected.
Популярност
FromtheperspectiveoftheentiresecurityindustryinChina,networkcamerashavenotyetbeenpopularizedonalargescale,mainlyduetothefollowingthreereasons.
Технологията не е зряла
Asweallknow,networkcamerasrelyonthenetworktoexist,andthestatusofthenetworkitselfiscloselyrelatedtotheapplicationeffectsofnetworkcameras.Lookingattheimpactofthebasicnetworkenvironmentonapplications,ifthenetworkmonitoringsystemisbasedontheestablishednetwork,whethertheoriginalnetworkinfrastructurecanmeetthemonitoringrequirementsneedstobeconsidered;whileforthenetworkmonitoringsystembasedonthenewlybuiltnetwork,Therewillbealargeinvestmentinbuildinganewnetworkenvironment,whichmaybeunbearableforusers.Inaddition,theaccessofnetworkcameraswillbetroubledbyproblemssuchasdomainnamesandIPaddresses,andnetworksecurityissuesarealsothefocusofusers'attention.Thecombinedeffectofsuchmanyissuesrestrictsthewideapplicationofnetworkcameras.However,intermsofnetworksecurity,millionsofhigh-definitionnetworkcamerashavebuilt-ininternationallystandardizedVPNprotocols,whichcanbeseamlesslyconnectedwithnetworksecurityequipment,andcanbesafelyaccessedfromtheInternettotheinternalLAN,therebygreatlyimprovingthesecurityofaudioandvideo.,Whichcanpreventintrusionintotheinternalnetworkthroughthenetworkcableofthenetworkcamera.Inaddition,theuniversalhigh-definitionnetworkcamerasalsohaveabuilt-inUPNPprotocol,plugandplay,noneedtochangethesettingsofnetworksecuritydevicessuchasfirewalls,anditalsoreducesthedifficultyofdebugging.
Пазарът е незрял
Somestandard-definitionnetworkcamerasarenotasgoodasanalogcameras,andthenetworkcamerasandthetroublesomenon-real-timenaturehavealsocontributedtothefactthatanalogcamerasarestillbeingLarge-scaleselection,andfirmlyoccupythemainstreampositionofthesurveillancemarket.However,withtheimprovementoftechnologyandtheincreaseofuserdemand,high-definitionhasbecomeagoalpursuedbysecuritymanufacturers,and720P/1080Phigh-definitioncamerasaremoreandmorefavoredbyusers.Takesomemainstreammanufacturersasanexample.ThefullseriesofmegaHDcameraslaunchedin2012allfollowtheH.264algorithmstandard,whichcanachievefullreal-timemegaHDof1920×1080,1600×1200,1280×720,andsupports1600×1200.Videomulti-streamvideooutputcaneasilyachievehigh-definitionmonitoring,cancaptureimagedetailstrulyandclearly,andthepicturequalityis4timeshigherthanthatofthetraditionalD1,sothattheapplicationfieldsofhigh-definitioncamerasarebecomingmoreandmoreextensiveandcanbeoptimisticallypredicted.Underthetrendofcentralizedandnetworkedvideosurveillance,high-definitionnetworkcameraswillshowarapiddevelopmenttrend.
Трето, цената на мрежовата камера е все още висока.
Comparedwithanalogcameras,becausethenetworkcameramarketisnotmatureyet,itspriceishigh,whichdiscouragesmanyindustryusers.Withthegradualmasteryofthecoretechnologyofcamerasbythelargerdomesticsecuritycompaniesandthelarge-scaleapplicationofdomesticcompressionchips,manydomesticsecuritycompanieshavelaunchedawiderangeofnetworkcameras.Somemanufacturersevenhaveafulllineofhigh-definitionnetworkcameras,whichcanprovideuserswithmorechoices.Thismeansthatthepricewillinevitablybereducedbyalargemargin.Thepriceofhigh-definitionnetworkcamerasisgettingcloserandclosertotraditionalanalogcameras,makingnetworkcamerasaffordabletomoreusers.
Роля
(1)Remotemanagement,costsavingRetailchainstoresarehighlydecentralized.Thenearestchainstoresareinthesamecity,andthedistanceiscross-city,Cross-provinceorevencross-border,thisisboundtobringhugeinconveniencetochainstoreownersinmanagement.Itisdifficultforshopkeeperswhodonothavetheclonetechniquetogetatimelyandaccurateunderstandingofthespecificconditionsoftheshopsinvariousplaces.WiththepopularizationoftheInternet,theapplicationofhigh-definitionnetworkcamerascancompletelysolvesuchproblems.Theshopkeepersofthechainstoresonlyneedtologintothedesignatedwebsite,entertheusernameandpassword,andstayathometoknowthereal-timeon-sitesituationofeachchainstore,aswellastheworkingstatusofthestaff,theshopfurnishings,andtheflowofcustomers.
(2)Uniformstandardsarethebestimagedisplay
ChainstoreoperationshaveaunifiedstorefrontandaunifiedFurnishingstyle,unifiedlogo,unifieddistribution,andunifiedservice.Variousunifiedrequirementswillinevitablybringtroublestotheshopownerinmanagement.Butthroughthereal-timehigh-definitionvideoattentionofthehigh-definitionnetworkcamera,notonlytheshopownercanclearlyunderstandthesituationofeachstore,butalsoenhancetheopportunitiesforeachchainstoretolearnfromeachotherandenhancecommunication.
Withtheprosperityofthemarketeconomyinrecentyears,producthomogeneitycompetitionhasbecomeincreasinglyfierce.Thisaspectisparticularlyprominentinretailproducts.High-definitionnetworkcamerascanplaytheiruniqueadvantages.Chainstoresonlyneedtohangtheproductsinthedesignatedstores,publishtheusernamesandpasswordstothemajorityofconsumers,andacceptconsumers'attentiontothestorefront,storefrontservicesandotheraspectsofsupervisionatanytime.Thisformofcommunicationthatconnectsshopsandconsumersthroughhigh-definitionnetworkcamerasnotonlyeffectivelydemonstratesthetrueimageofchainstorestoconsumers,butalsoeffectivelypromotestheimageofstoresandenterprisesonalargerscale.
(3)Securitymonitoring,worry-freemanagement
ProsperousapplicationofsecurityequipmentwithcommercialbuildingsandresidentialcommunitiesThesituationisverydifferent.Thenumberandscaleofretailchainstoresareincreasing.Formorethantenyears,retailchainstoreshavenotpaidmuchattentiontosafetymanagement.Themainreasonisthattheretailchainstoresarerelativelyscattered,andmostofthemarescatteredsmallandmedium-sizedstores,whichcannotrealizethecentralizedsecuritymanagementofcommercialbuildings.Theemergenceofhigh-definitionnetworkcamerascantrulysolvethesecuritymanagementofindividualretailchainstores,high-definitionmonitoring,andsecurityissuesataglance.
Theexistenceoffunctionssuchasremotevideomonitoring,monitoringareasetting,imagecapture,timingrecordingandSMSalarm,undoubtedlybringsgreatconveniencetothesecurityworkofretailchainstores.Theclearareacaresettingofthehigh-definitionnetworkcameracantrackalltheconditionsinthecareareainrealtime.Onceanabnormalsituationoccurs,thenetworkcameracansendanalarmmessagetotheuserintheformofSMS,andautomaticallyrecordhigh-definitionvideoatthesametime.Providevaluablematerialsfortheownertounderstandthesituationafterwards.
Стандарти за свързване на мрежова камера:
Mosthigh-definitionnetworkcamerasusetheH.264compressionstandard,buteachmanufacturerhasitsowncommunicationprotocol,anditcannotbeusedtoformmultiplemanufacturers.Interconnection,launchedin2005,effectivelysolvedthisproblem,butnotallnetworkcameramanufacturerssupportthisstandard.Whenpurchasing,youmustpurchasemanufacturersthatsupporttheONVIFprotocol.Afterthat,theafter-salesmaintenanceisverytroublesome!