Definice
High-definitionnetworkcamerareferstoanetworkthatcancontinuouslycaptureatmorethan12FPSandthemaximumresolutionisgreaterthan720P(1280*720),andevenreachesorexceeds1080P(resolution1920*1080)Camera.
Whenmeetingthe720PstandardintheabovedefinitionofHD,itcanbeunderstoodasamegapixellevel.Therefore,wealsocallahigh-definitionnetworkcameraamegapixelnetworkcamera.Camera.
Technické parametry
Technické parametry HD síťové kamery:
procesor Hi3512;
Vestavěný 200megapixelový CMOS snímač;
Podpora 1080P / 15 snímků, 720P / 25 snímků rozlišení;
StandardH.264MainProfilelevel3videoalgorithm/MJPEGoptional
Rozsah toku: 1Mbps-8Mbps (H.264)/1Mbps-16Mbps (MJPEG
Audiointercom, hlasové vysílání;
SD karta, může podporovat až 32 GB úložiště SD karet;
rozhraní 1RS485;
1switchinput,1switchoutput;
Rozhraní Autoiris
Funkce
1.Standard kódování MPEG-4: video používá standardní kódování a dekódování MPEG4, podporuje formáty kódování MPEG4 a CIF; podporuje výstup videa PAL/NTSC.
2,supportsDHCP:availableforusersDHCP(DynamicHostConfigurationProtocol)establishestheworkingenvironmentofIPCAM.DHCPisaprotocolthatobtainsvariousparametersnecessaryforcustomerstooperateintheIPnetworkthroughnetworkequipment.Byusingthisprotocol,theworkloadofsystemmanagementisgreatlyreduced,andtheequipmentisminimized.TheIPaddressisautomaticallyaddedtothenetwork.
3. Síťové funkce: podpora kompletního clusteru protokolů TCP/IP, vestavěný webový server a podpora přístupu k prohlížeči.
4, funkce ovládání PTZ: elektronická funkce naklánění, podpora mnoha protokolů kódování a dekódování.
5.Funkce alarmu:1alarmový vstup,1alarmovývýstup.
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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Výhody
High-definitionisthetrendofthetimes.Inthishigh-definitionera,thehigh-definitiontechnologyofnetworkcamerasdeterminesitsdevelopmentdirection.Inthehigh-definitionera,thetechnologyofhigh-definitionnetworkcamerasTheadvantagesareasfollows:
Networked,multiplepeoplecansurftheInternetatthesametime,andmonitoringisnotrestrictedbytimeandplace
Voiceandvideoaredigitized,andthepicturequalityisclearThevideofilemanagementandstorageareeasytomanageandstorevideofiles.IthasfarsurpassedthegeneraltraditionalCCTVshootingpicturequalitymonitoringfunction,andcanintegrateidentification,search,trackingandothertechnologies.
Vzdálená záloha
Easytoinstallandcanbeplacedanywhere(wirelessnetworktransmissionorPoEpowersupply)Thenetworkinfrastructureismature,noadditionalwiringcostsarerequired,andcostsaregreatlyreduced.
Jednoduchá obsluha, vysoká škálovatelnost a integrace
Systém je stabilní, snadno se aktualizuje a upgraduje
Widelyusedinpeople’slivelihood,commercialandresearchpurposes
Combinedwith3Gmobilephones,simpleconstructionMobileremotemonitoringsystem
Může podporovat režim širokoúhlého výstupu HDTV (16:9); pokrytí je širší a stejná oblast sledování může nahradit původní vícenásobné kamery s pevným bodem a jednu všesměrovou kameru.
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, vysoce výkonná síťová kamera, která integruje funkce zpracování, přenosu videa, ukládání videa a správy videa. Je zaměřena především na potřeby aplikací na trhu špičkového sledování, který vyžaduje relativně vysokou přehlednost obrazu, včetně: dálnic, bank, telemedicíny, bezpečnostních kontrolních bodů a dalších polí.
Výkon
Použití vysoce výkonného, výkonného programovatelného mediálního procesoru, jednočipového SOC, vestavěného (ARM9+DSP) a vysokorychlostního videoco-procesoru, vysoké citlivosti, vysokého šumu signálu ve srovnání s
složení
Síťové kamery s vysokým rozlišením se obecně skládají, obrazový snímač, zvukový snímač, A/D převodník, obraz, zvuk, řídicí síťový server, externí alarm, ovládací rozhraní atd. Částečné složení. Mezi nimi jsou hlavními objektivy a snímače obrazu.
Asthefront-endpartofthenetworkcamera,thelenshasafixedaperture,automaticaperture,automaticzoom,automaticzoomandothertypes,whicharethesameasanalogcameras.
Obrazový snímač, zvukový snímač
Theimagesensorhastwomodes:CMOSandCCD.CMOSisacomplementarymetaloxidesemiconductor.CMOSismainlyasemiconductormadeofsiliconandgermanium.ThebasicfunctionsarerealizedbythenegativelychargedandpositivelychargedtransistorsontheCMOS.Thecurrentgeneratedbythesetwocomplementaryeffectscanberecordedandinterpretedintoanimagebytheprocessingchip.ThemainadvantageofCMOSforCCDisthatitsavespower.UnlikeCCDandCMOScircuitscomposedofdiodes,thereisalmostnostaticpowerconsumption.ThismakesthepowerconsumptionofCMOSonlyabout1/3ofthatofordinaryCCD.TheimportantproblemofCMOSisthatitoverheatsduetothefrequentcurrentconversionwhenprocessingfast-changingimages.Ifthedarkcurrentiswellsuppressed,itisnotabigproblem.Ifthedarkcurrentisnotsuppressedwell,itisveryeasytoappearnoise.
aplikace
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.
Vývojový trend
1.Rozlišení se neustále zvyšuje
Therearemoremegapixels,1.3millionpixels,and2millionpixelsinthemarket.Pixels,other3millionpixels,5millionpixels,and8millionpixelsproductshavealsoappearedonthemarket.
2,COMPostupně nahrazujeCCD
Withthedevelopmentoftechnology,theperformanceofCMOSsensorsisrapidlyimproving.CMOSsensorhasafasterresponsespeedthanCCD,soitismoresuitableforthelargedatavolumecharacteristicsofhigh-definitionmonitoring.Fromamarketperspective,SONY,thetraditionalmanufacturerofCCDs,hasbeguntoshiftitsfocustoCMOSsensors,andalmostexclusivelyusesCMOSsensorsinitshigh-definitionnetworkcameras.
3,ISP (zpracování obrazového signálu)
ByintegratingISP,notonlycanthesystemcostbegreatlyreduced,itcanalsogreatlyenhancethestabilityofthevideo,andoptimizetheimageOpticalperformance.Thisplaysanextremelyimportantroleinimprovingtheimagingqualityofhigh-definitionnetworkcameras.
4.Funkce inteligentní analýzy jsou praktičtější
Intelligentanalysisfunctionsinclude:videoocclusionandvideolossdetection,videoconversiondetection,videoblurdetection,Videomotiondetection,statisticsonthenumberofentrancesandexits,crowdmovementandcongestionidentification,leftoveridentification,intrusionidentification,etc.
5.Standardizace
WhetheritisONVIForPSIA,botharestandardsformedbyenterprisesspontaneouslyorganized,buttheyhavereceivedmoreandmoreresponsesfromenterprisesFromapointofview,itstillhasaveryimportantmeaning.Inthenextfewyears,standardizationwillbecomeapassportforhigh-definitionnetworkcamerastoenterthemarket.
Záležitosti vyžadující pozornost
1.Volba čočky bezpečnostního dohledu
Inthevideosurveillancesystem,thelensofmegapixelhigh-definitionnetworkcameraChoiceisalsoveryimportant.Therearemanytypesofsecuritysurveillancelenses,andthespecificationsaredazzling.Itisveryimportanttochooseasuitablelensinasurveillanceproject.
2.Faktor zastavte pozornost při nákupu
(1) Předcházejte padělkům při nákupu.
(2)Itmustbematchedwiththecamera,especiallythematchingoftheluminousfluxFvalue,sothatthecamerasensitivitycanachievethedesiredeffect.
(3)Megapixelcamerasgenerallyhavetopurchasematchingcorrespondingmegapixellenses.
(4)Podívejte se na vzhled materiálu, zda odpovídá specifikacím CMOS/CCD a rozhraní, zda je povlak dobrý a typ čočky (sférický/asférický).
(5)S ohledem na prostředí aplikace zahrnuje typ objektivu výběr širokoúhlého objektivu, standardního objektivu, teleobjektivu, zoomu a objektivu s pevným ohniskem.
(6)Záruční doba objektivu.
(7)Otestujte kvalitu čočky osobně.
3.Pointsforpurchasinghigh-definitionmegapixelnetworkcameras
Judgingfromthecurrenthigh-definitionmegapixelnetworkcameraslaunchedinthedomesticmarket,thecompressionusedThemethodismainlybasedonMJPEG/MPEG4andH.264,andthereisnoclearerquantizeddataintermsofitsbandwidthandtransmissionrate,sothatalthoughusersunderstanditssuperhighimagequality,theystillhavesuchahighimagequality.Theimagecontinuityandthebandwidthrequiredfortransmissioncauseconfusion.Therefore,whenchoosingsuchproducts,youneedtopayattentiontothefollowingpoints:
(1)Knowtheactualbandwidth,transmissionrateandotherquantitativeindicatorsunderhigh-qualityimages,andconductascientificevaluationofthenetworkresourcesoftheproject.
(2)Použít CCD nebo COMS fotocitlivý čip? Pokud je schéma CCD čipů, která (jednokanálová/vícekanálová) technologie "vyvážení výstupu" je použita a zda rámový soubor splňuje skutečné požadavky.
(3)Thematchingproblemofopticallens,industrial-grademegalensmustbeusedtogether,otherwisethehigh-definitionpicturequalityadvantagesofthecameracannotbereflected.
Popularita
FromtheperspectiveoftheentiresecurityindustryinChina,networkcamerashavenotyetbeenpopularizedonalargescale,mainlyduetothefollowingthreereasons.
Technologie ještě není vyspělá
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.
Trh je nezralý
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.
Za třetí, náklady na síťovou kameru jsou stále vysoké.
Comparedwithanalogcameras,becausethenetworkcameramarketisnotmatureyet,itspriceishigh,whichdiscouragesmanyindustryusers.Withthegradualmasteryofthecoretechnologyofcamerasbythelargerdomesticsecuritycompaniesandthelarge-scaleapplicationofdomesticcompressionchips,manydomesticsecuritycompanieshavelaunchedawiderangeofnetworkcameras.Somemanufacturersevenhaveafulllineofhigh-definitionnetworkcameras,whichcanprovideuserswithmorechoices.Thismeansthatthepricewillinevitablybereducedbyalargemargin.Thepriceofhigh-definitionnetworkcamerasisgettingcloserandclosertotraditionalanalogcameras,makingnetworkcamerasaffordabletomoreusers.
Role
(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.
Standardy propojení síťových kamer:
Mosthigh-definitionnetworkcamerasusetheH.264compressionstandard,buteachmanufacturerhasitsowncommunicationprotocol,anditcannotbeusedtoformmultiplemanufacturers.Interconnection,launchedin2005,effectivelysolvedthisproblem,butnotallnetworkcameramanufacturerssupportthisstandard.Whenpurchasing,youmustpurchasemanufacturersthatsupporttheONVIFprotocol.Afterthat,theafter-salesmaintenanceisverytroublesome!