Määritelmä
High-definitionnetworkcamerareferstoanetworkthatcancontinuouslycaptureatmorethan12FPSandthemaximumresolutionisgreaterthan720P(1280*720),andevenreachesorexceeds1080P(resolution1920*1080)Camera.
Whenmeetingthe720PstandardintheabovedefinitionofHD,itcanbeunderstoodasamegapixellevel.Therefore,wealsocallahigh-definitionnetworkcameraamegapixelnetworkcamera.Camera.
Tekniset parametrit
HD-verkkokameran tekniset parametrit:
Hi3512-prosessori;
Sisäänrakennettu 200 megapikselin CMOS-sensori;
Tuki 1080P/15frame, 720P/25frameresoluutio;
StandardH.264MainProfilelevel3videoalgorithm/MJPEGoptional
Virtausalue: 1 Mbps - 8 Mbps (H.264) / 1 Mbps - 16 Mbps (MJPEG)
Audiointercom, äänilähetys;
SD-kortti, voi tukea jopa 32 Gt SD-kortin tallennustilaa;
1RS485-liitäntä;
1 kytkintulo, 1 kytkinlähtö;
Autoiris-käyttöliittymä
ominaisuudet
1.MPEG-4-koodausstandardi: video käyttää tavallista MPEG4-koodausta ja -dekoodausta, tukee MPEG4- ja CIF-koodausmuotoja; tukee PAL/NTSC-videolähtöä.
2,supportsDHCP:availableforusersDHCP(DynamicHostConfigurationProtocol)establishestheworkingenvironmentofIPCAM.DHCPisaprotocolthatobtainsvariousparametersnecessaryforcustomerstooperateintheIPnetworkthroughnetworkequipment.Byusingthisprotocol,theworkloadofsystemmanagementisgreatlyreduced,andtheequipmentisminimized.TheIPaddressisautomaticallyaddedtothenetwork.
3. Verkkotoiminnot: tuki täydellistä TCP/IP-protokollaklusteria, sisäänrakennettu WEB-palvelin ja selainkäyttö.
4, PTZ-ohjaustoiminto: elektroninen paneelin kallistustoiminto, joka tukee monia koodaus- ja dekoodausprotokollia.
5. Hälytystoiminto: 1 hälytintulo, 1 hälytyslähtö.
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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Edut
High-definitionisthetrendofthetimes.Inthishigh-definitionera,thehigh-definitiontechnologyofnetworkcamerasdeterminesitsdevelopmentdirection.Inthehigh-definitionera,thetechnologyofhigh-definitionnetworkcamerasTheadvantagesareasfollows:
Networked,multiplepeoplecansurftheInternetatthesametime,andmonitoringisnotrestrictedbytimeandplace
Voiceandvideoaredigitized,andthepicturequalityisclearThevideofilemanagementandstorageareeasytomanageandstorevideofiles.IthasfarsurpassedthegeneraltraditionalCCTVshootingpicturequalitymonitoringfunction,andcanintegrateidentification,search,trackingandothertechnologies.
Etävarmuuskopiointi
Easytoinstallandcanbeplacedanywhere(wirelessnetworktransmissionorPoEpowersupply)Thenetworkinfrastructureismature,noadditionalwiringcostsarerequired,andcostsaregreatlyreduced.
Yksinkertainen käyttö, korkea skaalautuvuus ja integrointi
Järjestelmä on vakaa, helppo päivittää ja päivittää
Widelyusedinpeople’slivelihood,commercialandresearchpurposes
Combinedwith3Gmobilephones,simpleconstructionMobileremotemonitoringsystem
Se voi tukea HDTV:n leveän näytön lähtötilaa (16:9);peittoalue on leveämpi,ja sama valvonta-alue voi korvataalkuperäisen monipistekameranja yksisuuntaisen kameran.
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, korkean suorituskyvyn verkkokamera, joka integroi prosessointi-, videolähetys-, videotallennus- ja videonhallintatoiminnot. Se on suunnattu pääasiassa korkealuokkaisten valvontamarkkinoiden sovelluksiin, jotka vaativat suhteellisen suurta kuvan selkeyttä, mukaan lukien: valtatiet, pankit, telelääketiede, turvallisuuden tarkistuspisteet ja muut alat.
Esitys
Suorituskykyisen, tehokkaan ohjelmoitavan mediaprosessorin, yhden sirun SOC:n, sisäänrakennetun (ARM9+DSP) ja nopean video-apuprosessorin käyttäminen, korkea herkkyys, korkea signaalikohina
sävellys
Teräväpiirtoverkkokamerat koostuvat yleensä kamerasta, kuvatunnistimesta, äänitunnistimesta, A/D-muuntimesta, kuvasta, äänestä, ohjaimen verkkopalvelimesta, ulkoisesta hälytyksestä, ohjausliittymästä jne.Osittainen kokoonpano. Niiden joukossa linssit ja kuvatunnistimet ovat tärkeimpiä.
Asthefront-endpartofthenetworkcamera,thelenshasafixedaperture,automaticaperture,automaticzoom,automaticzoomandothertypes,whicharethesameasanalogcameras.
Kuvasensori, äänisensori
Theimagesensorhastwomodes:CMOSandCCD.CMOSisacomplementarymetaloxidesemiconductor.CMOSismainlyasemiconductormadeofsiliconandgermanium.ThebasicfunctionsarerealizedbythenegativelychargedandpositivelychargedtransistorsontheCMOS.Thecurrentgeneratedbythesetwocomplementaryeffectscanberecordedandinterpretedintoanimagebytheprocessingchip.ThemainadvantageofCMOSforCCDisthatitsavespower.UnlikeCCDandCMOScircuitscomposedofdiodes,thereisalmostnostaticpowerconsumption.ThismakesthepowerconsumptionofCMOSonlyabout1/3ofthatofordinaryCCD.TheimportantproblemofCMOSisthatitoverheatsduetothefrequentcurrentconversionwhenprocessingfast-changingimages.Ifthedarkcurrentiswellsuppressed,itisnotabigproblem.Ifthedarkcurrentisnotsuppressedwell,itisveryeasytoappearnoise.
Sovellus
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.
Kehityssuunta
1.Resoluutio kasvaa jatkuvasti
Therearemoremegapixels,1.3millionpixels,and2millionpixelsinthemarket.Pixels,other3millionpixels,5millionpixels,and8millionpixelsproductshavealsoappearedonthemarket.
2,COMSkorvaa asteittain CCD:n
Withthedevelopmentoftechnology,theperformanceofCMOSsensorsisrapidlyimproving.CMOSsensorhasafasterresponsespeedthanCCD,soitismoresuitableforthelargedatavolumecharacteristicsofhigh-definitionmonitoring.Fromamarketperspective,SONY,thetraditionalmanufacturerofCCDs,hasbeguntoshiftitsfocustoCMOSsensors,andalmostexclusivelyusesCMOSsensorsinitshigh-definitionnetworkcameras.
3, ISP (ImageSignal Processing)
ByintegratingISP,notonlycanthesystemcostbegreatlyreduced,itcanalsogreatlyenhancethestabilityofthevideo,andoptimizetheimageOpticalperformance.Thisplaysanextremelyimportantroleinimprovingtheimagingqualityofhigh-definitionnetworkcameras.
4. Älykäs analyysitoiminto on käytännöllisempi
Intelligentanalysisfunctionsinclude:videoocclusionandvideolossdetection,videoconversiondetection,videoblurdetection,Videomotiondetection,statisticsonthenumberofentrancesandexits,crowdmovementandcongestionidentification,leftoveridentification,intrusionidentification,etc.
5. Standardointi
WhetheritisONVIForPSIA,botharestandardsformedbyenterprisesspontaneouslyorganized,buttheyhavereceivedmoreandmoreresponsesfromenterprisesFromapointofview,itstillhasaveryimportantmeaning.Inthenextfewyears,standardizationwillbecomeapassportforhigh-definitionnetworkcamerastoenterthemarket.
Huomiota vaativat asiat
1.Turvavalvonnan valinta
Inthevideosurveillancesystem,thelensofmegapixelhigh-definitionnetworkcameraChoiceisalsoveryimportant.Therearemanytypesofsecuritysurveillancelenses,andthespecificationsaredazzling.Itisveryimportanttochooseasuitablelensinasurveillanceproject.
2.Tekijät kiinnittävät huomiota kalojen ostamiseen
(1) Estä väärennökset ostaessasi.
(2)Itmustbematchedwiththecamera,especiallythematchingoftheluminousfluxFvalue,sothatthecamerasensitivitycanachievethedesiredeffect.
(3)Megapixelcamerasgenerallyhavetopurchasematchingcorrespondingmegapixellenses.
(4)Tarkistamateriaalin ulkonäkö, vastaako se CMOS/CCD-määrityksiä ja käyttöliittymää, onko pinnoite hyvä ja linssityyppi (pallomainen/asfäärinen).
(5)Sovellusympäristö huomioon ottaen linssityyppi sisältää laajakulmalinssien, vakiolinssien, teleobjektiivien, zoomlinssin ja kiinteän tarkennuksen.
(6)linssien takuuaika.
(7)Testaaobjektiivinlaatu henkilökohtaisesti.
3.Pointsforpurchasinghigh-definitionmegapixelnetworkcameras
Judgingfromthecurrenthigh-definitionmegapixelnetworkcameraslaunchedinthedomesticmarket,thecompressionusedThemethodismainlybasedonMJPEG/MPEG4andH.264,andthereisnoclearerquantizeddataintermsofitsbandwidthandtransmissionrate,sothatalthoughusersunderstanditssuperhighimagequality,theystillhavesuchahighimagequality.Theimagecontinuityandthebandwidthrequiredfortransmissioncauseconfusion.Therefore,whenchoosingsuchproducts,youneedtopayattentiontothefollowingpoints:
(1)Knowtheactualbandwidth,transmissionrateandotherquantitativeindicatorsunderhigh-qualityimages,andconductascientificevaluationofthenetworkresourcesoftheproject.
(2)KäytäCCD-taiCOMS-valoherkkää sirua?JosCCD-sirujärjestelmä,kumpi(yksikanavainen/monikanavainen)"lähtötasapaino"tekniikka on otettu käyttöön,ja vastaako kehys todellista kysyntää.
(3)Thematchingproblemofopticallens,industrial-grademegalensmustbeusedtogether,otherwisethehigh-definitionpicturequalityadvantagesofthecameracannotbereflected.
Suosio
FromtheperspectiveoftheentiresecurityindustryinChina,networkcamerashavenotyetbeenpopularizedonalargescale,mainlyduetothefollowingthreereasons.
Tekniikka ei ole kypsä
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.
Markkinat ovat kypsät
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.
Kolme,verkkokameran hinta on edelleen korkea.
Comparedwithanalogcameras,becausethenetworkcameramarketisnotmatureyet,itspriceishigh,whichdiscouragesmanyindustryusers.Withthegradualmasteryofthecoretechnologyofcamerasbythelargerdomesticsecuritycompaniesandthelarge-scaleapplicationofdomesticcompressionchips,manydomesticsecuritycompanieshavelaunchedawiderangeofnetworkcameras.Somemanufacturersevenhaveafulllineofhigh-definitionnetworkcameras,whichcanprovideuserswithmorechoices.Thismeansthatthepricewillinevitablybereducedbyalargemargin.Thepriceofhigh-definitionnetworkcamerasisgettingcloserandclosertotraditionalanalogcameras,makingnetworkcamerasaffordabletomoreusers.
Rooli
(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.
Verkkokameroiden liitäntästandardit:
Mosthigh-definitionnetworkcamerasusetheH.264compressionstandard,buteachmanufacturerhasitsowncommunicationprotocol,anditcannotbeusedtoformmultiplemanufacturers.Interconnection,launchedin2005,effectivelysolvedthisproblem,butnotallnetworkcameramanufacturerssupportthisstandard.Whenpurchasing,youmustpurchasemanufacturersthatsupporttheONVIFprotocol.Afterthat,theafter-salesmaintenanceisverytroublesome!