Nrog txoj kev loj hlob sai ntawm IP xov tooj, wireless LAN nkag point APs, thiab kev saib xyuas lub network nyob rau hauv xyoo tas los no, cov txheej txheem kev lag luam tau nce siab dua, thiab kev txhawb nqa kev lag luam los ntawm cov tuam txhab tau dhau los ua ntau dua thiab muaj txiaj ntsig. Ntawm cov kev sib pauv, ntawm qhov tsis meej pem tshaj plaws los ntawm cov tuam txhab engineering yog qhov teeb meem ntawm POE fais fab mov.
Nqe Lus Nug 1: PoE technology yog dab tsi?
PoE (Power Over Ethernet) yog hais txog Ethernet Cat.5 cabling infrastructure uas twb muaj lawm yam tsis muaj kev hloov pauv, rau qee qhov IP-based terminals (xws li IP xov tooj, wireless LAN nkag point AP, network koob yees duab thiab lwm yam) Thaum xa cov ntaub ntawv, nws kuj tuaj yeem ua tau. muab DC fais fab mov thev naus laus zis rau cov khoom siv zoo li no. PoE thev naus laus zis tuaj yeem ua kom muaj kev nyab xeeb ntawm cov txheej txheem cabling uas twb muaj lawm thaum ua kom muaj kev ua haujlwm ib txwm muaj ntawm lub network uas twb muaj lawm, txo cov nqi zoo heev.
Lub kaw lus PoE ua tiav suav nrog ob ntu: cov khoom siv hluav taws xob (PSE, Cov Khoom Siv Hluav Taws Xob) thiab cov khoom siv hluav taws xob (PD, Powered Device).
Cov Khoom Siv Hluav Taws Xob (PSE): Ethernethloov, routers, hubs, lossis lwm yam khoom siv hloov pauv network uas txhawb nqa POE
Lub hwj chim txais ntaus ntawv (PD): Qhov kev pab them nqi wireless feem ntau yog wireless AP.
Nqe Lus Nug 2: Puas yog PoE fais fab mov ruaj khov?
Los ntawm qhov kev xav ntawm kev pom, PoE thev naus laus zis tau tsim ntau xyoo thiab tam sim no nyob rau hauv ib qho kev paub tab heev. Txawm li cas los xij, vim tam sim no tus nqi siab ntawm kev soj ntsuam kev lag luam, qhov zoo ntawm PoEhloovlos yog cov cables siv tsawg dhau, lossis cov qauv tsim nws tus kheej tsis tsim nyog, ua rau muaj kev ua haujlwm hnyav tshwj xeeb rau cov haujlwm uas siv PoE fais fab mov. ruaj khov saib.
Nyob rau hauv cov ntaub ntawv loj heev kis tau tus mob, siab zog, thiab qhov yuav tsum tau rau 24/7 uninterrupted kev ua hauj lwm, kev siv ntawm zoo-paub PoE cov cuab yeej thiab nyob ntawm tej yog ib tug guarantee rau lub stability ntawm tag nrho cov system.
Nqe Lus Nug 3: Qhov zoo ntawm PoE fais fab kev daws teeb meem yog dab tsi?
1. Ua kom yooj yim txuas thiab txuag nqi zog
Lub network cable xa cov ntaub ntawv thiab lub zog tib lub sijhawm. PoE tshem tawm qhov xav tau ntawm cov khoom siv hluav taws xob kim thiab lub sijhawm nws siv los nruab cov khoom siv hluav taws xob, txuag nqi thiab sijhawm.
2. Muaj kev nyab xeeb thiab yooj yim
Cov khoom siv hluav taws xob PoE tsuas yog muab lub zog rau cov khoom siv uas yuav tsum tau siv hluav taws xob. Tsuas yog thaum cov khoom siv uas yuav tsum tau txuas nrog, yuav muaj qhov hluav taws xob ntawm Ethernet cable, yog li tshem tawm qhov kev pheej hmoo ntawm kev xau ntawm kab. Cov neeg siv tuaj yeem sib xyaw cov khoom qub thiab PoE cov khoom siv hauv lub network, thiab cov khoom siv no tuaj yeem ua ke nrog Ethernet cables uas twb muaj lawm.
3. Ua kom yooj yim tswj cov chaw taws teeb
Zoo li cov ntaub ntawv xa mus, PoE tuaj yeem saib xyuas thiab tswj cov cuab yeej los ntawm kev siv Simple Network Management Protocol (SNMP). Qhov kev ua haujlwm no tuaj yeem muab cov haujlwm xws li kev kaw thaum hmo ntuj thiab rov pib dua.
Nqe Lus Nug 4: Dab tsi yog qhov txaus ntshai lossis qhov tsis zoo ntawm PoE fais fab mov thev naus laus zis hauv kev siv engineering?
1. Lub zog tsis txaus, lub zog txais qhov kawg tsis tuaj yeem tsav tau: 802.3af tus qauv (PoE) tso zis hluav taws xob yog 15.4W. Rau cov khoom siv fais fab pem hauv ntej-kawg, lub zog tso zis tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua.
2. Kev pheej hmoo siab dhau: Feem ntau hais lus, PoEhloovyuav muab lub zog rau ntau APs tib lub sijhawm. Txhua qhov tsis ua haujlwm ntawm POE fais fab mov module ntawm lubhloovyuav ua rau tag nrho cov cuab yeej ua haujlwm tsis ua haujlwm, thiab qhov kev pheej hmoo siab heev.
3. Cov cuab yeej siv siab thiab cov nqi kho mob: Piv nrog rau lwm txoj hauv kev siv hluav taws xob, PoE lub tshuab hluav taws xob yuav ua rau cov khoom ua haujlwm tom qab muag tau nce ntxiv. Hauv kev nkag siab ntawm kev nyab xeeb thiab kev ruaj ntseg, kev ruaj ntseg thiab kev nyab xeeb ntawm cov khoom siv hluav taws xob sib cais yog qhov zoo heev.
Nqe Lus Nug 5: Yuav xaiv PoE li cashloov?
1. Yuav tsum muaj hwj chim npaum li cas rau cov khoom siv hluav taws xob: PoEhloovsiv cov qauv sib txawv, thiab cov khoom siv hluav taws xob yuav txawv, piv txwv li: IEEE802.3af tsis tshaj 15.4W, vim qhov tsis sib xws ntawm cov xaim xaim, tuaj yeem muab cov khoom siv hluav taws xob tsis pub tshaj 12.95W powered los ntawm. PoEhloovuas ua raws li IEEE802.3at tus qauv tuaj yeem muab lub zog rau cov khoom siv nrog lub zog siv tsis pub tshaj 25W.
2. Muaj pes tsawg lub cuab yeej tuaj yeem siv tau: Qhov taw qhia tseem ceeb ntawm PoEhloovyog tag nrho lub zog ntawm PoE fais fab mov. Raws li IEEE802.3af tus qauv, yog tias tag nrho PoE lub zog ntawm 24-chaw nres nkoj PoEhloovmus txog 370W, ces nws tuaj yeem muab 24 qhov chaw nres nkoj (370 / 15.4 = 24), tab sis yog tias nws yog ib qho chaw nres nkoj fais fab raws li IEEE802.3at tus qauv Lub zog yog xam ntawm 30W, thiab tib lub sijhawm, nws tuaj yeem tsuas muab lub zog rau 12 qhov chaw nres nkoj ntau tshaj (370/30 = 12).
3. Xav tau tus naj npawb ntawm cov interfaces, seb puas yuav nqa fiber ntau qhov chaw nres nkoj, nrog lossis tsis muaj kev tswj xyuas network, ceev (10/100 / 1000M).
Nqe Lus Nug 6: Qhov kev nyab xeeb ntawm kev sib kis ntawm PoE fais fab mov? Dab tsi yog cov lus qhia rau kev xaiv cov cables network?
Qhov kev nyab xeeb kis tau tus mob ntawm POE fais fab mov yog 100 meters. Nws raug nquahu kom siv tag nrho tsib hom tooj liab cables.
Lub POE fais fab mov network cable xav kom qhov teeb meem no tsuas yog muaj teeb meem nyob rau hauv lub teb chaws xws li Tuam Tshoj thiab lwm lub teb chaws uas cov khoom cuav thiab cov khoom pheej yig muaj ntau heev. Nws tsis yog ib qho teeb meem hauv ntau lub teb chaws tsim. POE IEEE 802.3af tus qauv xav kom lub zog tso zis ntawm PSE qhov chaw tso zis yog 15.4W lossis 15.5W. Cov cuab yeej PD tau txais lub zog tom qab xa tawm 100 meters yuav tsum tsis pub tsawg dua 12.95W. Raws li 802.3af tus nqi tam sim no ntawm 350ma, qhov tsis kam ntawm 100 meter network cable yuav tsum yog (15.4-12.95W) / 350ma = 7 ohms lossis (15.5-12.95) / 350ma = 7.29 ohms.
Tus qauv network cable ib txwm ua tau raws li qhov yuav tsum tau ua. IEEE 802.3af poe fais fab mov txheem nws tus kheej yog ntsuas nrog tus qauv network cable. Yog vim li cas vim li cas POE fais fab mov network cable yuav tsum tshwm sim yog vim muaj ntau lub network cables nyob rau hauv kev ua lag luam yog non-standard network cables, uas tsis tau tsim nyob rau hauv nruj raws li cov kev cai ntawm cov qauv network cables. Cov ntaub ntawv uas tsis yog-tus qauv network cables ntawm kev ua lag luam feem ntau suav nrog tooj liab-clad steel, tooj liab-clad aluminium, thiab tooj liab-clad hlau. Cov kab hluav taws xob network no muaj qhov muaj txiaj ntsig loj thiab tsis haum rau POE fais fab mov. POE fais fab mov yuav tsum siv oxygen-dawb tooj liab network cable, uas yog, tus qauv network cable.