Cov Lus Qhia rau Kev Ua Kom Video Resolution Ntau Dua ntawm CCTV Cameras
Kev txhim kho qhov kev daws teeb meem ntawm cov yeeb yaj kiab ntawm koj lub koob yees duab CCTV yog qhov tseem ceeb heev, tshwj xeeb tshaj yog tias koj vam khom cov yeeb yaj kiab rau kev ruaj ntseg thiab kev saib xyuas. Qhov kev daws teeb meem siab dua tso cai rau cov ntsiab lus tseem ceeb xws li lub ntsej muag, daim ntawv tsav tsheb, thiab cov haujlwm txawv txawv kom pom tseeb dua. Hauv tsab xov xwm no, peb yuav tham txog ntau yam tswv yim thiab cov lus qhia uas tuaj yeem pab koj txhim kho qhov kev daws teeb meem ntawm cov yeeb yaj kiab ntawm koj lub koob yees duab CCTV.
1. Xaiv lub koob yees duab CCTV uas muaj cov yam ntxwv siab
Kauj ruam thawj zaug los txhim kho qhov kev daws teeb meem ntawm cov yeeb yaj kiab yog xyuas kom koj lub koob yees duab CCTV txhawb nqa qhov kev daws teeb meem siab. Cov koob yees duab CCTV niaj hnub no feem ntau muab qhov kev daws teeb meem Full HD (1080p) lossis txawm tias 4K. Qee qhov tseem ceeb uas yuav tsum nrhiav suav nrog:
a. Kev Txiav Txim
Cov koob yees duab CCTV uas muaj qhov daws teeb meem 1080p (1920 x 1080 pixels) lossis 4K (3840 x 2160 pixels) zoo tagnrho rau koj cov kev xav tau kev saib xyuas. Cov koob yees duab uas muaj qhov daws teeb meem siab dua ua rau pom cov ntsiab lus zoo dua thiab cov duab ntse dua.
b. Lub Koob Yees Duab Sensor
Xaiv lub koob yees duab uas muaj lub sensor loj dua, xws li lub CMOS lossis CCD sensor zoo. Lub sensor loj dua yuav ntes tau lub teeb ntau dua, ua rau cov duab pom tseeb dua, tshwj xeeb tshaj yog thaum muaj teeb tsawg.
c. Lub Lens
Ntxiv rau qhov kev daws teeb meem thiab lub sensor, qhov zoo ntawm lub lens kuj tseem ceeb heev. Cov lens uas muaj qhov apertures loj dua (piv txwv li, f/2.0 lossis qis dua) cia lub teeb nkag ntau dua, ua rau cov duab ci dua thiab meej dua.
2. Txhim Kho Teeb Pom Kev Zoo
Teeb pom kev zoo yog qhov tseem ceeb rau kev yees duab zoo. Kho qhov teeb pom kev hauv thaj chaw uas koj saib xyuas kom koj lub koob yees duab CCTV tuaj yeem kaw tau meej. Nov yog qee cov lus qhia txog teeb pom kev zoo:
a. Ntxiv Teeb Ntxiv
Yog tias thaj chaw uas raug saib xyuas tsaus ntuj, xav txog kev ntxiv teeb pom kev zoo xws li lub teeb LED lossis teeb pom kev zoo ib puag ncig. Qhov no yuav pab lub koob yees duab thaij duab kom meej dua.
b. Siv lub koob yees duab uas muaj thev naus laus zis tsawg
Qee lub koob yees duab CCTV muaj cov cuab yeej siv los saib thaum hmo ntuj lossis thaum tsaus ntuj. Cov koob yees duab no siv infrared los thaij duab thaum tsaus ntuj.
c. Kho Cov Chaw Teeb Pom Kev Zoo
Cov chaw teeb tsa qhov kaj ntawm cov koob yees duab CCTV tuaj yeem hloov kho kom zoo dua qub. Qee lub koob yees duab tso cai rau kev teeb tsa qhov kaj tsis siv neeg, tab sis kev hloov kho tes kuj tuaj yeem ua rau muaj txiaj ntsig zoo dua nyob ntawm qhov chaw ib puag ncig.
3. Hloov Kho Firmware thiab Software
Cov firmware thiab software tshiab tshaj plaws feem ntau muaj cov kev kho kab laum, kev txhim kho kev ua haujlwm, thiab cov yam ntxwv tshiab uas tuaj yeem txhim kho qhov zoo ntawm cov yeeb yaj kiab. Nco ntsoov xyuas cov firmware hloov tshiab los ntawm koj lub tuam txhab tsim lub koob yees duab CCTV tsis tu ncua.
a. Tshawb xyuas seb puas muaj kev hloov tshiab tas li
Cov chaw tsim khoom siv CCTV feem ntau tso tawm cov firmware hloov tshiab tsis tu ncua. Saib xyuas lawv tsis tu ncua kom ntseeg tau tias koj lub koob yees duab cov software hloov tshiab tas li.
b. Siv Cov Software Ua Yeeb Yaj Kiab
Muaj ib txhia lub tuam txhab tsim lub koob yees duab CCTV uas muab cov software ua cov yeeb yaj kiab uas tuaj yeem pab txhim kho qhov zoo ntawm cov duab. Cov software no tso cai rau kev hloov kho xws li kev ua kom pom tseeb dua, txo qhov nrov nrov, thiab kho xim.
4. Txhim Kho Qhov Chaw Tso Lub Koob Yees Duab
Qhov chaw tso lub koob yees duab CCTV kom raug yog qhov tseem ceeb rau kev kaw cov yeeb yaj kiab zoo nrog cov ntsiab lus ntau dua. Nov yog qee qhov kev xav thaum tso lub koob yees duab CCTV:
a. Teem lub kaum sab xis thiab qhov siab
Nco ntsoov kho lub kaum sab xis thiab qhov siab ntawm lub koob yees duab kom zoo tshaj plaws rau thaj chaw uas koj xav tau. Tsis txhob muab lub koob yees duab siab dhau los yog qis dhau.
b. Tsis txhob pom tej yam uas thaiv kev pom
Tshawb xyuas seb puas muaj tej yam khoom uas yuav thaiv qhov pom ntawm lub koob yees duab, xws li cov ceg ntoo, cov ncej, lossis lwm yam khoom siv. Qhov pom ntawm lub koob yees duab uas thaiv qhov pom yuav ua rau qhov zoo ntawm cov yeeb yaj kiab tsis zoo.
c. Siv Ntau Lub Koob Yees Duab
Yog xav siv ntau lub koob yees duab CCTV rau thaj chaw loj, xav txog kev siv ntau dua ib lub koob yees duab CCTV. Kev siv ntau lub koob yees duab ua rau muaj kev npog zoo dua thiab pab tiv thaiv cov chaw tsis pom kev.
5. Xav txog qhov zoo ntawm kev sib txuas hauv network
Cov koob yees duab CCTV niaj hnub no feem ntau txuas nrog los ntawm lub network, txawm tias yog wired lossis wireless. Qhov zoo ntawm kev sib txuas network tuaj yeem cuam tshuam rau qhov kev daws teeb meem thiab qhov zoo ntawm cov yeeb yaj kiab kaw. Nov yog qee yam uas yuav tsum xav txog:
a. Kev Sib Txuas Nrog Xov Tooj thiab Wireless
Feem ntau cov kev sib txuas uas siv xov hlau ruaj khov dua thiab muaj peev xwm txhawb nqa cov kev daws teeb meem siab dua li cov kev sib txuas wireless. Yog tias ua tau, siv Ethernet cable los txuas lub koob yees duab CCTV rau DVR lossis NVR.
b. Qhov Bandwidth ntawm Network
Xyuas kom tseeb tias koj lub network muaj bandwidth txaus los tswj cov yeeb yaj kiab uas muaj kev daws teeb meem siab. Kev sib txuas qeeb lossis lub network uas muaj neeg coob coob tuaj yeem ua rau qeeb lossis cov duab poob.
c. Kev Txhim Kho Router
Lub router uas muaj cov yam ntxwv siab heev yuav pab kom cov ntaub ntawv xa mus sai dua thiab txhim kho qhov zoo ntawm kev saib video. Xyuas kom koj lub router txhawb nqa cov qauv tshiab xws li Wi-Fi 6 kom ua tau zoo tshaj plaws.
6. Siv cov Codec thiab hom ntawv video uas yog
Kev xaiv cov codec thiab hom ntawv video zoo yuav cuam tshuam rau qhov zoo ntawm koj cov yeeb yaj kiab. Qee cov codecs ua haujlwm tau zoo dua ntawm kev nias yam tsis muaj kev txo qis qhov zoo ntawm daim duab.
ib. H.264 thiab H.265
Cov codecs H.264 thiab H.265 nrov heev hauv CCTV lub koob yees duab vim lawv qhov ua tau zoo hauv kev nias video. H.265, tseem hu ua HEVC (High Efficiency Video Coding), muab kev nias siab dua li H.264, tso cai rau kev kaw cov yeeb yaj kiab zoo nrog cov ntaub ntawv me dua.
b. Hom Ntawv Cia Khoom
Xaiv hom ntawv cia uas khaws cov yeeb yaj kiab zoo, xws li MP4 lossis AVI. Cov hom ntawv no khaws cov zoo thaum lub sijhawm nias thiab thaum lub sijhawm ua si video.
7. Kev Txij Nkawm thiab Kev Ntxuav Tsis Tu Ncua
Xyuas kom koj lub koob yees duab CCTV zoo tas li los ntawm kev saib xyuas thiab ntxuav tas li. Lub lens koob yees duab qias neeg lossis muaj plua plav tuaj yeem ua rau cov duab tsis zoo.
a. Ntxuav lub Lens
Lub lens huv yog qhov tseem ceeb rau cov duab ntse. Siv daim ntaub microfiber los ntxuav lub lens thiab tsis txhob siv cov tshuaj uas ua rau lub lens puas.
b. Kev Tshuaj Xyuas Tsis Tu Ncua
Ua kev tshuaj xyuas tsis tu ncua kom paub tseeb tias txhua yam khoom ntawm lub koob yees duab ua haujlwm tau zoo. Xyuas seb puas muaj kev puas tsuaj rau lub cev lossis lwm yam teeb meem kev siv tshuab.
Xaus
Kev txhim kho qhov kev daws teeb meem ntawm cov yeeb yaj kiab hauv CCTV lub koob yees duab yuav tsum tau ua tib zoo saib xyuas ntau yam, suav nrog kev xaiv lub koob yees duab, teeb pom kev zoo, qhov chaw tso, thiab qhov zoo ntawm kev sib txuas hauv network. Los ntawm kev ua raws li cov lus qhia saum toj no, koj tuaj yeem ua kom koj lub koob yees duab CCTV tsim cov yeeb yaj kiab meej dua thiab ntxaws dua, thaum kawg txhim kho kev ruaj ntseg thiab kev saib xyuas hauv thaj chaw saib xyuas.
