Cov Lus Qhia Txog TL;DR:Cov koob yees duab CCTV rau cov neeg cog lus yuav tsum tau xaiv cov hom koob yees duab, qhov kev daws teeb meem, cov kev daws teeb meem cia khoom, thiab cov khoom siv hauv network kom zoo. Cov kab ke raws li IP yog cov tseem ceeb hauv kev lag luam nrog rau qhov kev daws teeb meem 4K los ua tus qauv. Cov kev xav tseem ceeb suav nrog suav cov koob yees duab, cov kev cai cabling, kev xaiv NVR / VMS, thiab kev ua raws li cov cai saib xyuas hauv zos. Kev teeb tsa lag luam feem ntau yog txij li $ 500- $ 2,000 rau ib lub koob yees duab suav nrog kev teeb tsa.

Kev Taw Qhia: CCTV Technology rau Kev Ruaj Ntseg Lag Luam

Kev tshaj tawm hauv TV kaw (CCTV) yog hais txog cov kab ke saib xyuas video xa cov teeb liab mus rau cov neeg saib xyuas tshwj xeeb es tsis yog tshaj tawm rau pej xeem. Kev lag luam CCTV thoob ntiaj teb tau tshaj $ 55 billion hauv xyoo 2026, nrog rau cov koob yees duab IP ntes tau 78% feem ntawm kev lag luam raws liKev tshawb fawb txog MarketsandMarketsCov neeg cog lus yuav tsum nkag siab txog cov lus qhia txog kev siv tshuab, cov kev cai teeb tsa, thiab kev ua raws li txoj cai thaum teev cov kab ke saib xyuas.

Cov tshuab CCTV niaj hnub no muab ntau tshaj li kev saib xyuas kev ruaj ntseg. Kev tshuaj xyuas siab heev ua rau suav neeg, paub daim ntawv tsav tsheb, thiab nrhiav tau kev nkag mus rau hauv thaj chaw. Kev koom ua ke nrog kev tswj kev nkag thiab lub tswb ceeb toom tsim cov ecosystem kev ruaj ntseg dav dav.

Cov Hom thiab Daim Ntawv Thov ntawm CCTV Lub Koob Yees Duab

Cov Koob Yees Duab Dome rau Kev Soj Ntsuam Sab Hauv Tsev

Cov koob yees duab dome muaj lub hau kaw uas zais qhov lens. Cov koob yees duab no haum rau cov khw muag khoom, chaw ua haujlwm hauv chaw tos txais qhua, thiab cov chaw hauv tsev so. Cov dome tiv taus kev puas tsuaj tiv taus lub zog cuam tshuam txog li 50 joules. Tus qauv kaw tiv thaiv cov hmoov av thiab kev sim ua kom puas tsuaj.

Cov Koob Yees Duab Rau Kev Tiv Thaiv Ib Puag Ncig

Cov koob yees duab mos txwv muab kev tiv thaiv pom tseeb nrog cov vaj tse uas tiv taus huab cua rau kev teeb tsa sab nraum zoov. Cov koob yees duab no feem ntau muaj qhov ntev ntawm qhov ntev dua rau kev saib deb. Cov vaj tse uas tau ntsuas IP67 tiv thaiv cov hmoov av thiab dej nkag. Cov teeb pom kev zoo IR ua rau pom kev hmo ntuj txog li 100 meters nyob ntawm cov qauv qhia.

Cov Koob Yees Duab PTZ rau Kev Saib Xyuas Nquag

Cov koob yees duab uas tig tau thiab tig tau zoom muaj peev xwm tig tau 360-degree nrog rau qhov zoom optical txij li 20x txog 40x. Cov neeg ua haujlwm ruaj ntseg tswj hwm qhov chaw ntawm lub koob yees duab kom taug qab cov neeg raug thaij duab. Cov yam ntxwv taug qab tsis siv neeg yuav taug qab cov khoom txav mus los hauv thaj chaw uas tau teev tseg. Cov koob yees duab PTZ xav tau kev teeb tsa thiab kev tsim kho ntau dua li cov koob yees duab ruaj khov.

Kev daws teeb meem CCTV thiab cov qauv zoo ntawm cov duab

Cov Kev Cai rau Kev Siv Network thiab Bandwidth

Kev Hloov PoE thiab Kev Xa Khoom Fais Fab

Fais fab hla Ethernet (PoE) xa ob qho tib si cov ntaub ntawv thiab lub zog hluav taws xob los ntawm ib qho Cat5e / Cat6 cables. IEEE 802.3af muab 15.4W ib qho chaw nres nkoj, txaus rau cov koob yees duab txheem. IEEE 802.3at (PoE +) xa 30W rau PTZ koob yees duab thiab cov cua sov. LubTus qauv IEEE 802.3btua rau 60-90W rau cov ntawv thov muaj zog siab.

Kev Xam Bandwidth thiab Kev Khaws Cia

Cov kev xav tau ntawm bandwidth nyob ntawm qhov kev daws teeb meem, tus nqi ntawm tus ncej, thiab cov codec compression. H.265 compression txo bandwidth los ntawm 50% piv rau H.264. Lub koob yees duab 4MP ntawm 15fps xav tau kwv yees li 4-6 Mbps. Cov kev hloov pauv hauv network xav tau lub peev xwm backplane txaus los tswj cov kwj ntawm lub koob yees duab sib sau ua ke yam tsis muaj pob poob.

Cov Tswv Yim Khaws Cia thiab Khaws Cov Yeeb Yaj Kiab

Cov cuab yeej kaw video hauv network (NVR) thiab cov tshuab tswj video (VMS) khaws cov yeeb yaj kiab saib xyuas kom tau txais cov pov thawj. Lub sijhawm khaws cia feem ntau yog li ntawm 30-90 hnub nyob ntawm cov cai tswjfwm thiab kev ntsuam xyuas kev pheej hmoo. Kev khaws cia ntug ntawm SD daim npav muab kev thaub qab thaum lub network tsis ua haujlwm. Kev khaws cia hauv huab muab kev rov ua dua tshiab sab nraud tab sis xav tau bandwidth upload loj.

Cov Kev Xyaum Zoo Tshaj Plaws rau Kev Txhim Kho rau Cov Kws Kho Vaj Tse

Kev tso lub koob yees duab ua raws li txoj cai 20-foot: teeb tsa lub koob yees duab hauv 20 feet ntawm thaj chaw saib xyuas rau kev txheeb xyuas lub ntsej muag.Tshooj 725 ntawm NECtswj hwm kev teeb tsa cov cabling uas muaj hluav taws xob tsawg rau cov kab ke kev ruaj ntseg. Cov piv ntawm cov kav dej yuav tsum tsis pub tshaj 40% rau kev tso cua sov kom zoo. Kev tiv thaiv av thiab kev tiv thaiv hluav taws xob ntau dhau tiv thaiv cov khoom siv puas tsuaj los ntawm cua daj cua dub.

Cov Lus Nug Feem Ntau

Qhov txawv ntawm NVR thiab DVR systems yog dab tsi?

NVR (Network Video Recorder) ua cov ntaub ntawv digital IP camera ntws hla kev sib txuas network. DVR (Digital Video Recorder) hloov cov teeb liab analog camera mus rau hom digital. NVR systems muaj peev xwm daws teeb meem siab dua, yooj yim dua scalability, thiab nkag mus rau chaw deb. Cov kev teeb tsa niaj hnub no feem ntau siv NVR technology.

Cov CCTV systems xav tau qhov chaw cia khoom ntau npaum li cas?

Yuav tsum tau muaj chaw cia khoom siv cov mis no: Tus naj npawb ntawm lub koob yees duab × Tus nqi Bitrate × Teev kaw × Hnub khaws cia. Lub koob yees duab 4MP kaw tas mus li ntawm 4Mbps xav tau kwv yees li 42GB ib hnub. Kev khaws cia peb caug hnub rau 16 lub koob yees duab xav tau 20TB chaw cia khoom. Kev kaw raws li kev txav chaw txo qhov yuav tsum tau muaj chaw cia khoom los ntawm 40-60%.

Cov cabling twg raug pom zoo rau kev teeb tsa lub koob yees duab IP?

Cov xov hlau Cat5e txhawb nqa lub koob yees duab khiav mus txog 100 meters ntawm 100Mbps. Cov xov hlau Cat6 ua rau muaj kev sib txuas 1Gbps rau ntau lub koob yees duab thiab 4K. Kev teeb tsa sab nraum zoov xav tau cov xov hlau UV-rated lossis ncaj qha-faus nrog kev tiv thaiv zoo.Tus qauv TIA-568qhia meej txog cov kev cai rau kev teeb tsa cabling rau kev lag luam.

Cov koob yees duab CCTV puas ua haujlwm yam tsis muaj kev sib txuas hauv internet?

Cov tshuab NVR hauv zos ua haujlwm ywj pheej yam tsis muaj kev nkag mus rau hauv internet. Kev sib txuas hauv internet ua rau pom kev deb, ceeb toom ntawm xov tooj ntawm tes, thiab ua haujlwm thaub qab hauv huab. Cov tshuab Standalone txuas ntxiv kaw thaum lub sijhawm internet tsis ua haujlwm. Kev saib xyuas sab nraud thiab kev ceeb toom thawb xav tau kev sib txuas hauv network.

Cov teeb pom kev zoo li cas cuam tshuam rau kev ua haujlwm ntawm lub koob yees duab?

Cov lus qhia txog qhov tsawg kawg nkaus ntawm lub teeb qhia txog qib teeb uas xav tau rau cov duab siv tau. Cov koob yees duab xim feem ntau xav tau 0.1-0.5 lux rau kev ua haujlwm hmo ntuj. Cov teeb pom kev zoo IR muab lub teeb infrared uas tsis pom rau kev pom kev hmo ntuj monochrome. Kev siv tshuab Wide dynamic range (WDR) daws cov teeb meem nyuaj ntawm backlight. Cov koob yees duab Starlight ua tiav cov duab xim hauv qhov tsaus ntuj ze li tag nrho (0.001 lux).

Xaus Lus: Qhia meej txog CCTV Systems Zoo

Cov lus qhia tshwj xeeb ntawm lub kaw lus CCTV yuav tsum nkag siab txog cov thev naus laus zis ntawm lub koob yees duab, cov khoom siv hauv network, thiab cov kev xav tau ntawm kev khaws cia. Cov kab ke IP-based nrog 4MP lossis siab dua qhov kev daws teeb meem muab cov pov thawj zoo rau kev ruaj ntseg. Kev tsim qauv network kom zoo ua kom muaj kev xa cov yeeb yaj kiab zoo yam tsis muaj teeb meem bandwidth. Cov neeg cog lus yuav tsum sib npaug cov kev txwv nyiaj txiag ntawm cov neeg siv khoom nrog cov kev cai ua tau zoo thaum ua kom ua raws li cov cai hauv zos thiab cov cai tswjfwm ntiag tug.