DVRs, lossis DVRs, tau nkag mus rau lub neej niaj hnub no. Nws yog dab tsi? Lub koob yees duab digital yog ib lub cuab yeej uas sau thiab ua txhua yam ntawm cov teeb liab video uas los ntawm cov koob yees duab txuas nrog. Kev kaw cia yog nqa tawm (yog tias muaj) ntawm lub hard disk. Nyob rau tib lub sijhawm, cov duab tso tawm mus rau lub monitor lossis cov khoom siv nyob deb (ntawm lub network hauv zos mus rau ib qho kev sib txuas lossis mus rau lub xov tooj ntawm tes, yog tias muaj kev sib txuas hauv Is Taws Nem). Nov yog txoj hauv kev ua haujlwm ntawm DVR.
Yuav ua li cas hauv kev xyaum? Lub DVR yog ib lub cuab yeej uas nws lub tsev yog kaw. Ua li no, kev tiv thaiv los ntawm kev cuam tshuam sab nraud yog tsim, thiab kev ua haujlwm ntev kuj tau lees paub.
Txhawm rau pib, koj yuav tsum nruab lub hard drive sab hauv lub cuab yeej raws li cov lus qhia, thiab tom qab ntawd txuas cov koob yees duab yees duab ntawm cov channel uas muaj nrog kev teeb tsa ntawm qhov tsis sib xws ntawm DVR.
DVRs txawv li cas?
Cov khoom siv no yog dab tsi thiab lawv tus yam ntxwv yog dab tsi? DVRs txawv nyob rau hauv ib tug xov tooj ntawm parameters uas txiav txim lawv lub hwj chim thiab lub hom phiaj.
Ntau tus video channels. Nyob rau sab nraum qab ntawm lub recorder muaj cov connectors uas lub koob yees duab video tuaj yeem txuas nrog ntawm cov xov hlau. Kev xaiv xa khoom yog 4 hom: mus rau 8, 9 lossis 16 raws, nyob ntawm DVR-recorder.
Tus naj npawb ntawm cov channel yog ib qho ntawm cov ntsiab lus tseem ceeb. Lawv tus lej ntau dua, qhov loj dua qhov kev soj ntsuam video tuaj yeem tsim tau yam tsis muaj khoom siv ntxiv thiab kev siv nyiaj.
Tib lub sijhawm, 4-channel DVRs yooj yim siv rau cov tes hauj lwm me me (nrog rau hauv tsev lossis hauv khw). 8-channel cov khoom siv tau tuaj yeem ua haujlwm hauv cafes, tsev noj mov, nyob ib puag ncig ntawm lub tsev loj lossis hauv kev cob qhia ntau lawm. 16-channel tuaj yeem siv rau ntawm cov khoom loj. Tshwj xeeb, nws muaj peev xwm los teeb tsa kev soj ntsuam video ntawm lawv lub hauv paus hauv chaw nres tsheb, khw muag khoom, ntawm cov chaw tsim khoom lossis ntawm lub hauv paus kev lag luam. Rau qhov no, Full HD DVR feem ntau siv.
Sau nrawm. Tib yam tseem ceeb parameter. Qhov zoo ntawm daim duab nyob ntawm nws. Nws yog qhov zoo tshaj yog tias cov teeb liab video kaw ntawm 25 ntas ib ob. Hauv qhov no, txhua qhov kev txav ntawm tus saib thaum saib yuav du, thiab tsis muaj dab tsi tseem ceeb yuav plam ntawm qee qhov taw qhia. Txawm li cas los xij, feem ntau ntawm DVRs ntawm kev ua lag luam, txhawm rau txo tus nqi, tuaj yeem sau 3-6 thav duab ib ob (cov no yog cov peev nyiaj feem ntau Xiaomi DVR qauv). Uas yog txaus los soj ntsuam qhov xwm txheej.
Video daws teeb meem. Qhov parameter yuav cuam tshuam qhov tseeb ntawm daim duab yuav ua li cas. Thiab nrog qhov kev nthuav dav ntau npaum li cas tom qab nws yuav muaj peev xwm xav txog cov khoom ntawm tus kheej ntawm tus ncej.
Muaj ntau txoj kev xaiv rau kev daws teeb meem: 720x576, 720x288, 360x288 pixels. Kev daws teeb meem siab dua tuaj yeem txo qhov ceev ceev, tshwj xeeb tshaj yog thaum muaj ntau cov channel - vim muaj kev txwv los ntawm cov qauv tsim ntawm lub hard disk raws li cov ntaub ntawv array.
Piv txwv li, DVR MDR-8700 ntawm 720x576 daws teeb meem tuaj yeem kaw 50 ntas ib ob (6 ib channel), ntawm 720x288 tus naj npawb ntawm thav ntawv twb 100 (12.5 ib channel), ntawm 360x288=200 Txawm li cas los xij, nws yog tsim nyog rau txhua leej txhua tus los xaiv qhov zoo thiab ceev ntawm cov ntaubntawv povthawj siv, nyob ntawm tej yam kev mob thiab yuav tsum tau. Piv txwv li, qhov kim Full HD DVR tsis zoo li yuav xav tau rau chav me me.
Networking
Cov neeg sau npe feem ntau muaj peev xwm txuas tau hauv lub network txhawm rau teeb tsa kev nkag mus rau lwm tus neeg sab nraud saib xyuas los ntawm nws (piv txwv li, tsis yog ntawm tus neeg saib xyuas nkaus xwb, tab sis kuj nyob hauv tus thawj tswj hwm chaw ua haujlwm lossis hauv nws lub xov tooj ntawm tes.). Xws li lub sijhawm tseem ceeb heev rau tus neeg uas xav tau ib txwm paub txog qhov tshwm sim ntawm qhov khoom lag luam.
DVR txoj hauv kev ua haujlwm yog dab tsi? Cov lus qhia rau nws tuaj yeem nthuav tawm raws li hauv qab no. Lub yees duab kaw cov ntaub ntawv los ntawm cov koob yees duab yees duab mus rau lub hard drive ntsia. Raws li, nrog rau kev nce hauv cov xov tooj ntawm cov khoom xa tuaj nrogvideo koob yees duab, lub peev xwm yuav tsum tau ntawm lub hard disk kuj nce ho. Yog li, qhov siab tshaj plaws ntawm cov channel uas DVR tuaj yeem txhawb nqa yog 32 (cov neeg sau npe nrog 16 channel feem ntau yog ntau). Yog xav paub ntxiv, txawm tias muaj ntau yam khoom siv nruab rau tib lub sijhawm, lossis kev teeb tsa hauv PC.
Tus yees duab kaw tau tshaj tawm cov teeb liab ncaj qha mus rau tus saib, thaum lub sijhawm kaw cov duab video. Qhov no tso cai rau tus neeg teb xov tooj ib txhij saib xyuas qhov xwm txheej tam sim no txhawm rau teb rau lub sijhawm. DVRs muab ntau yam kev xaiv rau saib video ib zaug. Ntawm lawv, koj tuaj yeem txuas tag nrho ib zaug (lossis ntau lub vijtsam). Cov qauv yog 2x2, 3x3, 4x4, thiab tseem muaj ntau txoj hauv kev, zoo li 1x5, thaum ib qho screen nyiam, thiab tus so yog nyob rau sab thiab hauv qab. Nws tseem muaj peev xwm tig rau ib lub koob yees duab los ntawm scrolling los ntawm tag nrho cov npe ib los ntawm ib qho. Txhua lub vijtsam hauv ntau hom kuj tuaj yeem nthuav dav rau qhov loj yog tias tsim nyog.
Txhua DVR muaj nws tus kheej txheej ntawm ntau lub vijtsam. Txawm li cas los xij, qhov no tsis yog tus yam ntxwv tseem ceeb ntawm cov cuab yeej zoo DVR. Nws txhais li cas? Yuav tsum tau saib xyuas ntau ntxiv rau cov kev txwv hauv qab no ntawm DVR.
Surveillance Frame Rate
DVR-relays tag nrho cov duab los ntawm lub koob yees duab hauv lub sijhawm. Ua tsaug rau qhov no, cov duab zoo heev tau ua tiav, daim duab uas hloov pauv ntawm qhov zaus ntawm 25 thav duab ib ob. Nws yog rau qhov no zaus uas lub qhov muag yog accustomed nyob rau hauv kev twb kev txuas nrog ua hauj lwm rau nws.tv technology. Qhov no yog li cas feem ntau hom DVR ua haujlwm - Blackbox, Xiaomi thiab lwm yam. Qhov no tso cai rau tus neeg teb xov tooj los txiav txim siab txog qhov xwm txheej ceeb toom raws sijhawm thiab muab lub teeb liab tam sim yog tias tsim nyog.
Number of frames per records
Txawm li cas los xij, nrog qhov nrawm tib yam li thaum saib, tsis yog txhua tus DVRs muaj peev xwm kaw tau. Muaj cov uas tuaj yeem txuag tau tag nrho 25 thav duab ib ob. Lawv txawv los ntawm tus nqi siab dua, qee zaum - pom tias kim dua. Feem ntau DVRs (Tsheb Blackbox, piv txwv li) tuaj yeem sau tau zoo kawg nkaus ntawm 3-8 thav duab ib ob, uas txaus los qhia cov ntsiab lus tseem ceeb. Nyob rau hauv rooj plaub no, nws yuav ua tau mus saib 3-8 tseem duab thav duab los ntawm ncej. Cov yam ntxwv no feem ntau hu ua "ntau tus ncej tus nqi thaum kaw".
Videos daws teeb meem
Qhov no yog qhov ntsuas uas tau qhia los ntawm ob tus lej sib cais los ntawm kev sib faib kos npe (720x480). Thawj tus lej yog tus lej ntawm cov dots kab rov tav ntawm txhua lub sijhawm hauv daim duab, qhov thib ob - vertically. Feem ntau, daim duab tsis yog ib txwm qhia kom raug. Feem ntau, cov tuam txhab lag luam tuaj yeem kwv yees nws ntau dhau los ua kom lawv cov khoom txaus nyiam hauv khw.
Nws tseem tsim nyog sau cia tias qhov kev daws teeb meem nws tus kheej tsis tuaj yeem yog 100% qhov taw qhia ntawm daim duab zoo. Txawm tias muaj kev daws teeb meem zoo, cov koob yees duab yuav raug teeb tsa xws li lawv tsis tuaj yeem xa cov duab meej. Yog li ntawd, ib tug yuav tsum mus rau qhov kev xaiv ntawm ib qho twgcov khoom siv feem ntau, tsim tib hom kev soj ntsuam video, tsis tas them nyiaj ntau dhau ntawm qee txoj haujlwm thiab txuag rau lwm tus.
DVR network ua haujlwm
Feem ntau DVRs muaj kev sib txuas Ethernet los teeb tsa cov ntaub ntawv chaw taws teeb. Piv txwv li, nws tuaj yeem ua cov ntaub ntawv hloov mus rau ib qho kev saib dua. Nws tseem tuaj yeem txuas tau ntawm software tshwj xeeb hauv Is Taws Nem los ntawm lub xov tooj ntawm tes lossis ntsiav tshuaj. Nyob rau hauv rooj plaub no, cov vis dis aus tsis yog duplicate xwb, tus neeg thib ob tuaj yeem saib tag nrho cov ntaub ntawv sib luag, suav nrog kev nrhiav qee qhov video hauv lub cim xeeb uas tau kaw ob peb hnub dhau los. Niaj hnub no, loj-tsim DVR tsheb qauv yog ubiquitous, muab cov neeg siv lub peev xwm no.
Kev Tshawb Fawb
Zoo DVRs muaj peev xwm sau tau thaum pom kev txav mus los hauv daim duab. Qhov no tuaj yeem yog thaj chaw ua ntej (piv txwv li, pem hauv ntej ntawm lub qhov rooj lossis qhov rais), lossis ib qho hauv daim duab. Yog tias qhov kev txav ntawm ib qho khoom (lossis txawm tias tus duab ntxoov ntxoo los ntawm ib qho khoom) raug kuaj pom, DVR pib kaw ntawm qhov nrawm, uas tso cai rau cov ncauj lus kom ntxaws ntxiv-los ntawm-nce saib ntawm txhua yam uas tshwm sim ntawm lub sijhawm. Yog tias tsis muaj kev txav mus los, ces qhov no, cov ntaub ntawv kaw yuav tsis ua txhua yam, lossis ua tiav ntawm tus ncej qis ib pliag. Ua tsaug rau hom no, koj tuaj yeem txuag tau qhov chaw ntawm koj lub hard drive thiab tib lub sijhawm tsis nco dab tsi tseem ceeb uas tuaj yeem tsim.nyob rau hauv lub enterprise los yog nyob rau hauv qhov chaw los ntawm intruders. Ib qho piv txwv ntawm cov khoom siv no yog DVR Tsheb GT300 A8.
Shapes and sizes
Ib tus yam ntxwv tseem ceeb ntawm DVRs, ntawm lwm tus, yog tus qauv tsim. Hauv lwm lo lus - hom, qhov loj me, qhov hnyav thiab qee qhov lwm yam ntxwv. Cov txheej txheem ntawm kev teeb tsa yog ze ze rau nws, tshwj xeeb tshaj yog nyob rau hauv lub tsheb. Rau qhov laj thawj pom tseeb, qhov yooj yim ntawm kev siv, nrog rau kev ruaj ntseg, nyob ntawm qhov no hauv ntau qhov kev hwm - ntau npaum li cas cov cuab yeej yuav thaiv qhov pom.
Koj yuav tsum pom tias tus neeg sau npe yuav sawv tawm ntawm lub tsheb khoob. Qhov tsis tshua pom kev ntawm cov cuab yeej yuav tsis nyiam cov tub sab me me, thiab yuav tsis nyiam cov neeg txawv teb chaws uas yuav pom tias muaj kev nyab xeeb ua dab tsi nyob ze ntawm lub tsheb. Hauv qhov no, DVR-daim iav yog nrov heev.
Rau ntau, qhov xwm txheej tseem ceeb yog qhov yooj yim ntawm kev rhuav tshem DVR. Qhov no yuav tsim nyog thaum tsav tsheb mus tua qee lub sijhawm tseem ceeb uas tsis tau suav nrog hauv kev tshuaj xyuas, lossis thaum kaw kev sib tham thaum nres nrog tus kws saib xyuas tsheb khiav tsheb.
Cov khoom siv twg yog qhov xav tau tshaj plaws?
Raws li kev tshuaj xyuas ntau, DVRs tsim rau lub tsheb tuaj yeem hu ua nrov tshaj plaws. Qhov no yog vim qhov tseeb tias lawv muaj tus nqi qis, thiab tib lub sijhawm lawv muaj peev xwm muab kev pabcuam tseem ceeb rau tus tswv lub tsheb, tshwj xeeb tshaj yog thaum muaj teeb meem.
Ntxiv rau, cov khoom siv no tuaj yeem pab tsis tau tsuas yog ua pov thawj lawv rooj plaub rau tub ceev xwm tsheb, tab sis kujntes tej kev sim ua txhaum cai ntawm lwm tus neeg. Yog li, kev sim nyiag khoom ntawm lub tsheb yuav raug ntes tam sim ntawm video. Qee cov khoom siv tau pom dav dav thiab tuaj yeem ntes txhua yam uas tshwm sim nyob ib puag ncig lub tsheb.
Yuav ua li cas xaiv cov cuab yeej no rau lub tsheb?
Tag nrho cov yam ntxwv saum toj no yuav tsum tau tsom ncaj qha thaum xaiv cov cuab yeej hauv khw. Koj yuav tsum pib ua qee qhov gradation rau koj tus kheej raws li lawv qhov tseem ceeb, muab kev nyiam ntau dua rau cov cuab yeej uas, lwm yam sib npaug, yuav me dua lossis nrawm dua los sib sau ua ke.
Yuav luag txhua lub kaw lus niaj hnub no (xws li DVR Blackbox) muaj lub khob nqus dej rau ntawm lub qhov cua ua lub mount. Nws tso cai rau koj khaws nws cov khoom zoo rau lub sijhawm ntev. Nyob rau tib lub sijhawm, koj tuaj yeem hloov qhov chaw ntawm lub kaw lus tau yooj yim yog tias tsim nyog (ob qho tib si tag nrho cov qauv thiab kev tshem tawm yam tsis muaj kev txhim kho bracket, uas ua rau kom muaj kev ruaj ntseg ntawm lub ntsiab fixation).
Lwm qhov kev xaiv rau fastening tuaj yeem yog daim kab xev ob sab. Qhov no feem ntau pom hauv DVR Daim iav khoom siv. Xyaum qhia tau hais tias nyob rau hauv cov ntaub ntawv no fixation yog ntev npaum li cas. Txawm li cas los xij, ua ntej pib kev teeb tsa, nws yuav tsum ua kom pom tseeb thiab raug ua txhua qhov kev ntsuas. Muaj tseeb, qhov no nws yuav tsis ua haujlwm sai sai kom tshem tawm tus neeg sau npe. Tom qab ntawd, yuav tsum tau ntxuav iav ntxiv.
Qee tus sau npe yuav muaj ob lub koob yees duab yees duab tib lub sijhawm. Hauv qhov no, qhov ntev ntawm lub cuab yeej yuav loj dua me ntsis. Txawm li cas los xij, nws yuav ua tau ib txhijsau dab tsi tshwm sim nyob rau hauv lub cabin. Feem ntau hauv qhov no, koj tuaj yeem pom dab tsi tshwm sim ntawm ob sab ntawm lub tsheb lossis txawm tias tom qab nws. Txawm li cas los xij, lub koob yees duab sab hauv video muaj qhov ua tau zoo me ntsis. Nyob rau hauv cov xwm txheej uas koj xav tau tua los ntawm ntau txoj haujlwm ib zaug, koj tuaj yeem yuav thiab nruab ib lub kaw lus modular, uas suav nrog txog li 4 lub koob yees duab sib txawv. Hauv qhov no, daim duab tuaj yeem tso tawm rau ntawm daim iav tsom iav tshwj xeeb hauv nws sab vaj huam sib luag.
kaw lo lus
Cov neeg siv tshuaj xyuas hais cov hauv qab no. Qhov kev xaiv zoo tshaj plaws hauv kev xaiv ib lub cuab yeej yog thaum tus muag khoom ntawm lub cuab yeej yuav pab tsis tau tsuas yog nrog ib zaj dab neeg txog cov yam ntxwv tseem ceeb, tab sis kuj nrog pre-installation. Hauv qhov no, koj tuaj yeem ntsuas tus neeg sau npe ua ntej rau kev cuam tshuam, zais cia thiab kaw qhov zoo hauv ib lub tsheb tshwj xeeb. Nws yuav tsum tsis txhob hnov qab tias txawm nyob rau hauv tib lub tsheb, daim duab yuav txawv vim muaj ntau yam cuam tshuam, txawm tias thaum siv ultra-compact DVR Tsheb Mirror.
Tib lub sijhawm, thaum sim tawm DVR, koj tuaj yeem ntsuas koj txaus siab npaum li cas nrog nws lub kaum sab xis saib. Feem ntau cov qauv muaj lub kaum sab xis ntawm 40 ° txog 150 °. Qhov nrov tshaj plaws thiab dav vim qhov pom kev sib piv "nqi / zoo" - 120 °. Tseeb tiag, nyob rau hauv cov ntaub ntawv no, ib tug dav spectrum yuav tso cai rau koj mus ntes dab tsi tshwm sim ntawm ob sab ntawm lub tsheb.
Txawm li cas los xij, ob lub DVRs nrog tib lub kaum sab xis 120 ° yuav txawv qhov tseeb. Qee cov tuam ntxhab yog cunning thiab qhia lub kaum sab xis no, pib tsis yog los ntawm qhov dav ntawm qhov screen, tab sis los ntawmkab pheeb ces kaum. Txawm li cas los xij, feem ntau ntawm lub kaum ntse ntse loj, dab tsi tshwm sim ntawm ob sab tuaj yeem kaw nrog kev cuam tshuam loj, uas kuj tsis ua rau muaj kev xav zoo.
Txhua yam uas yuav raug coj mus rau hauv tus account thaum xaiv tus sau npe yuav tso cai rau koj siv nws ntev dua thiab siv tau zoo dua. Thiab muaj ib qho ntxiv rau koj qhov kev nyiam thaum muaj xwm txheej.
