Yuav Ua Li Cas Thiaj Kov Yeej Kev Cuam Tshuam ntawm Wireless CCTV
Cov CCTV wireless tau nrov zuj zus vim nws siv tau yooj yim thiab yooj yim rau kev teeb tsa, tshem tawm qhov xav tau cov xov hlau video ntev zoo li cov tshuab analog. Txawm li cas los xij, qhov yooj yim no feem ntau los nrog cov teeb meem: kev cuam tshuam teeb liab. Kev cuam tshuam tuaj yeem ua rau cov duab tsis meej, qeeb, txo qhov zoo ntawm cov yeeb yaj kiab, thiab txawm tias kev sib txuas ntawm lub koob yees duab poob qis. Yuav kom tswj tau lub kaw lus ruaj ntseg zoo, nws yog ib qho tseem ceeb kom nkag siab txog qhov ua rau muaj kev cuam tshuam thiab yuav ua li cas daws nws kom raug. Nov yog phau ntawv qhia ua tiav txog yuav ua li cas daws cov teeb liab cuam tshuam ntawm cov CCTV wireless.
1. Nkag Siab Txog Cov Cim Qhia Txog Kev Cuam Tshuam ntawm Wireless CCTV
Ua ntej kho, xub nrhiav seb puas muaj kev cuam tshuam. Qee cov tsos mob uas pom ntau muaj xws li:
- Cov yeeb yaj kiab yog pixelated (blocky) lossis tawg, tshwj xeeb tshaj yog thaum lub koob yees duab txav mus los lossis thaum hmo ntuj.
- Cov duab poob qis (duab tsis meej) thiab qeeb ob peb vib nas this.
- Kev sib txuas tsis tu ncua: lub koob yees duab feem ntau tawm mus thiab tom qab ntawd rov qab los online.
Daim duab khov rau ob peb feeb.
- Suab nrov (yog tias lub koob yees duab siv suab).
Cov tsos mob no tsis yog vim muaj kev cuam tshuam xwb; nws kuj tseem yuav yog vim muaj internet bandwidth tsawg, DVR/NVR tsis ua haujlwm zoo, lossis lub zog fais fab tsis ruaj khov. Txawm li cas los xij, hauv cov tshuab wireless, kev cuam tshuam yog ib qho ntawm cov laj thawj feem ntau.
2. Txheeb xyuas cov chaw cuam tshuam uas feem ntau tshwm sim
Feem ntau cov teeb liab cuam tshuam vim yog cov nthwv dej xov tooj cua ntawm lub koob yees duab sib tw kom tau bandwidth nrog lwm cov khoom siv lossis raug thaiv los ntawm cov qauv tsev. Cov chaw cuam tshuam feem ntau suav nrog:
1. Cov Wi-Fi routers nyob ze siv tib lub channel (tshwj xeeb tshaj yog nyob rau hauv thaj chaw tuab).
2. Cov khoom siv hauv tsev xws li lub tshuab hluav taws xob microwave (2,4 GHz), cov khoom siv saib menyuam yaus, xov tooj tsis muaj xov hlau, Bluetooth, thiab cov chaw taws teeb ntse hauv tsev.
3. Cov chaw nkag mus rau hauv chaw ua haujlwm muaj ntau thiab sib tshooj.
4. Phab ntsa tuab, cov pob zeb ua kom ruaj khov, cov zaj duab xis qhov rai, thiab cov hlau ua rau lub teeb liab tsis muaj zog (ua kom tsis muaj zog).
5. Qhov kev ncua deb ntawm lub koob yees duab thiab lub router / NVR deb dhau lawm.
6. Tso lub cuab yeej tsis raug, piv txwv li lub router nyob rau hauv ib lub ces kaum ntawm lub tsev uas muaj lub txee npog.
7. Qhov zoo ntawm lub cuab yeej: lub antenna me me, lub chipset Wi-Fi tsis muaj zog, lossis lub firmware qub.
Los ntawm kev nkag siab txog qhov chaw, koj tuaj yeem xaiv qhov kev daws teeb meem zoo tshaj plaws yam tsis tau sim ntau yam tsis tsim nyog.
3. Hloov Wi-Fi Channel thiab Band
Ib qho ntawm txoj hauv kev ceev tshaj plaws los txo qhov kev cuam tshuam yog tswj koj cov Wi-nkaus channel.
a) Siv cov channel uas muaj qhov ceev tsawg kawg nkaus
– Ntawm 2,4 GHz band, cov channel uas pom zoo yog 1, 6, lossis 11 (vim tias lawv tsis sib tshooj).
– Siv ib lub Wi-Fi analysis app (piv txwv li WiFi Analyzer) los saib seb cov channel twg ntsiag to tshaj.
b) Hloov mus rau 5 GHz band (yog tias txhawb nqa)
Feem ntau, 5 GHz band muaj kev pab ntau dua thiab muaj kev cuam tshuam tsawg dua, ua rau nws tsim nyog rau thaj chaw uas muaj neeg coob coob. Txawm li cas los xij, 5 GHz muaj qhov ntau thiab tsawg dua thiab tsis tuaj yeem nkag mus rau phab ntsa dua li 2,4 GHz. Yog tias koj lub koob yees duab txhawb nqa 5 GHz, sim ua raws li cov hauv qab no:
- Cov koob yees duab sab hauv tsev: 5 GHz feem ntau ruaj khov dua.
- Lub koob yees duab sab nraum zoov uas nyob deb: 2,4 GHz qee zaum tsim nyog dua vim muaj ntau yam.
4. Tso lub Router, NVR, thiab lub koob yees duab kom raug
Kev cuam tshuam feem ntau ua rau muaj kev cuam tshuam ntau dua los ntawm kev tso cov khoom siv tsis zoo.
– Muab lub router/access point tso rau hauv nruab nrab ntawm thaj chaw uas koj xav ncav cuag, kom siab li siab tau (piv txwv li ntawm phab ntsa lossis txee siab).
– Tsis txhob muab lub router tso ze ntawm cov tshuab hluav taws xob microwave, cov tshuab hais lus loj, cov vaj huam sib luag hluav taws xob, lossis cov khoom siv hlau.
– Sim kom muaj kab pom kev qhib dua ntawm lub koob yees duab thiab lub router.
- Rau cov koob yees duab sab nraum zoov, xav txog kev teeb tsa ib qho chaw nkag mus rau hauv tsev ze ntawm lub qhov rais uas tig mus rau lub koob yees duab (tab sis tseem tiv thaiv tau huab cua thiab cua sov).
Kev hloov pauv ntawm qhov chaw ntawm ob peb meters qee zaum tuaj yeem ua qhov sib txawv loj hauv kev ruaj khov ntawm lub teeb liab.
5. Siv lub Repeater, Additional Access Point, lossis Mesh System
Yog tias qhov deb yog qhov teeb meem lossis lub teeb liab raug thaiv los ntawm phab ntsa, qhov kev daws teeb meem yog kom nthuav qhov ntau.
- Wi-Fi Repeater/Extender: yooj yim rau kev teeb tsa, tab sis tuaj yeem ua rau kom latency thiab txo qhov throughput vim yog cov txheej txheem relay.
- Chaw Nkag Mus Ntxiv (xaim xov hlau): ruaj khov dua yog tias koj tuaj yeem rub txoj hlua LAN mus rau qhov nruab nrab, tom qab ntawd tshaj tawm Wi-Fi tshiab.
– Mesh Wi-Fi: feem ntau yog qhov yooj yim tshaj plaws rau cov tsev ntau txheej, vim tias cov nodes tau nthuav tawm thiab kev xa khoom ruaj khov dua.
Rau cov kev xav tau CCTV, qhov zoo tshaj plaws yog siv qhov chaw nkag ntxiv nrog lub cable lossis mesh backhaul nrog lub backhaul muaj zog, kom lub koob yees duab streaming tsis poob yooj yim.
6. Muab qhov tseem ceeb rau CCTV Traffic nrog QoS
Yog tias ntau lub cuab yeej siv lub network (streaming video, online gaming, thiab kev sib ntsib), lub koob yees duab yuav poob nws qhov kev sib txuas, ua rau nws zoo li tsis ruaj khov. Qhib qhov QoS (Quality of Service) feature ntawm koj lub router:
- Xaiv cov koob yees duab lossis NVR ua ntej.
- Txwv cov bandwidth ntawm cov khoom siv tsis tseem ceeb.
– Yog tias lub router txhawb nqa nws, tsim ib qho SSID tshwj xeeb rau IoT/CCTV cov khoom siv kom khaws cov tsheb khiav sib cais ntau dua.
QoS tsis tshem tawm kev cuam tshuam xov tooj cua, tab sis pab tswj kev ruaj khov thaum lub network muaj neeg coob coob.
7. Txo Bitrate thiab Resolution Load (Txhim Kho Qhov Chaw Teeb Tsa Lub Koob Yees Duab)
Cov koob yees duab uas muaj kev daws teeb meem siab xav tau bandwidth ntau. Yog tias koj lub teeb liab wireless tsis muaj zog, txo qhov load ntawm cov ntaub ntawv:
- Txo qhov bitrate (piv txwv li ntawm 4096 kbps mus rau 2048 kbps).
– Siv cov codec zoo dua xws li H.265 (yog tias muaj).
- Kho qhov nrawm ntawm tus ncej (piv txwv li ntawm 25 fps txog 15 fps) rau thaj chaw uas tsis xav tau cov ntsiab lus txav siab.
- Qhib VBR (Variable Bitrate) kom qhov bitrate hloov kho rau cov xwm txheej.
Qhov zoo ntawm kev kaw suab tseem tuaj yeem zoo yog tias kev hloov kho tau ua kom sib npaug, es tsis txhob yuam kom muaj kev daws teeb meem siab tab sis feem ntau tawg.
8. Ua tib zoo saib xyuas lub zog thiab kev ruaj khov ntawm hluav taws xob
Cov teeb meem nrog lub adapter fais fab feem ntau raug yuam kev rau kev cuam tshuam teeb liab. Xyuas kom tseeb tias:
- Siv lub adapter qub nrog cov lus qhia tsim nyog (amperage txaus).
- Tsis txhob siv cov qhov (sockets) uas xoob lossis cov xov hluav taws xob tsis zoo.
– Yog tias thaj chaw ntawd muaj feem yuav hluav taws xob tsis ua haujlwm, siv lub UPS me me rau lub router/NVR kom kev sib txuas ruaj khov.
Lub koob yees duab uas rov pib dua vim lub zog tsis ruaj khov yuav tshwm sim ua "lub teeb liab poob".
9. Hloov Kho Firmware thiab Network Ruaj Ntseg
Cov firmware qub dhau lawm tuaj yeem ua rau muaj teeb meem kev sib txuas Wi-Fi lossis ua haujlwm tsis zoo. Ua cov hauv qab no:
- Hloov kho lub koob yees duab, NVR, thiab router firmware.
- Xyuas kom tseeb tias Wi-Fi encryption siv WPA2 lossis WPA3.
- Hloov tus password uas twb muaj lawm kom tiv thaiv cov khoom siv txawv teb chaws los ntawm kev txuas thiab puv lub network.
Ib lub network uas raug "hijacked" lossis siv los ntawm ntau lub cuab yeej tsis paub tuaj yeem ua rau muaj kev cuam tshuam loj dua.
10. Siv Lub Antenna lossis Lub Cuab Yeej Uas Tsim Nyog Dua (Yog Ua Tau)
Qee lub koob yees duab lossis cov chaw nkag mus txhawb nqa cov kav hlau txais xov sab nraud lossis muaj ntau hom kav hlau txais xov muaj zog dua. Xav txog:
- Qhov chaw nkag mus nrog lub antenna nce siab dua.
- Cov khoom siv uas txhawb nqa MIMO thiab cov qauv Wi-Fi tshiab dua (Wi-Fi 5/6).
- Rau qhov deb ntev (piv txwv li, ntawm cov tsev), siv lub choj wireless 5 GHz point-to-point uas tsim los rau kev sib txuas ruaj khov.
Qhov no ua tau zoo dua li yuam kom lub koob yees duab hauv tsev ua haujlwm hauv qhov xwm txheej hnyav.
11. Sim Qhov Zoo ntawm Lub Teeb Liab thiab Ua Cov Kauj Ruam Ib Kauj Ruam Los daws Cov Teeb Meem
Yuav kom tsis txhob muaj kev tsis meej pem, ua qhov kev kho hauv cov theem:
1. Xyuas lub zog teeb liab ntawm lub koob yees duab (RSSI) hauv lub app/NVR yog tias muaj.
2. Tsiv lub koob yees duab kom ze rau lub router rau kev sim: yog tias nws ruaj khov, qhov teeb meem yog qhov deb / teeb meem.
3. Hloov qhov channel 2,4 GHz (1/6/11) thiab 5 GHz band yog tias ua tau.
4. Ntxiv cov chaw nkag/mesh yog tias thaj chaw loj.
5. Txo qhov bitrate yog tias nws tseem poob qis.
6. Yog tias qhov teeb meem tseem muaj, xav txog kev xaiv siv xov hlau (LAN) lossis tus choj tshwj xeeb.
Cov kauj ruam zuj zus yuav ua rau koj nrhiav tau qhov teeb meem hauv paus yam tsis tas yuav hloov lub cuab yeej.
Xaus
Kev cuam tshuam ntawm cov teeb liab nrog lub CCTV wireless yog qhov tshwm sim ntau, tshwj xeeb tshaj yog nyob rau hauv cov chaw muaj neeg coob coob Wi-Fi lossis cov tsev uas muaj ntau yam kev thaiv. Qhov tseem ceeb rau kev kov yeej qhov teeb meem no yog kev sib xyaw ua ke ntawm kev xaiv cov channel zoo, siv cov band tsim nyog, txhim kho qhov chaw ntawm router thiab lub koob yees duab, nthuav dav lub network nrog cov chaw nkag / mesh, thiab kho qhov bitrate ntawm lub koob yees duab kom phim cov peev xwm ntawm lub teeb liab. Nrog cov kauj ruam no, lub CCTV wireless tuaj yeem ua haujlwm ruaj khov dua, kaw cov ntaub ntawv du dua, thiab muab cov txheej txheem kev ruaj ntseg zoo dua.
Yog tias koj xav tau, kuv tuaj yeem pab koj tsim daim ntawv teev cov teeb meem raws li lub npe ntawm lub koob yees duab / router uas koj siv (nrog rau koj qhov chaw nyob: qhov loj ntawm lub tsev, tus naj npawb ntawm cov koob yees duab, qhov deb ntawm lub router, thiab seb nws puas txhawb nqa 5 GHz).
