Hwj chim tshaj Ethernet (PoE) cov cuab yeej ua rau lub cab hluav taws xob Ethernet sib luag ua haujlwm ua lub zog cords. Nyob rau hauv PoE-enabled network, ncaj qha hluav taws xob tam sim no (DC) ntws los ntawm kab ke network nrog nrog Ethernet cov ntaub ntawv. Feem ntau cov tshuab PoE ua raws li IEEE tus qauv 802.3af los yog 802.3at .
Hwj chim tshaj Ethernet yog tsim los siv nrog cov khoom siv tau yooj yim thiab cov khoom siv hluav taws xob xws li Wi-nkaus cov ntsiab lus (APs) , webcams, thiab VoIP tes. PoE tso cai rau cov cuab yeej siv network rau hauv cov ce los yog cov phab ntsa uas muaj fais fab fais fab tsis nyob rau hauv yooj yim.
Lub tshuab tsis txuas mus rau PoE, Ethernet muaj hwjchim kav xa hluav taws xob ua hluav taws xob los ua cov kab txuas ntev Ethernet txuas.
Vim li cas Feem ntau Cov Kev Networks hauv Tsev Tsis Pub Tshaj Tawm & Siv Tawm Siv Hwj Hla Nkaus
Vim tias cov tsev feem ntau muaj ntau lub hwjchim thiab feem ntau Ethernet wall jacks, thiab ntau tus neeg siv khoom siv Wi-Fi txuas tsis Ethernet, qhov kev siv ntawm PoE rau kev sib tham hauv tsev yog txwv. Cov neeg muag khoom hauv tuam txhab tsuas yog muaj xws li PoE cov nyiaj them yug rau lawv cov qib high-end thiab cov lag luam-chav khiav haujlwm thiab cov koos pij hluav taws xob rau qhov laj thawj no.
DIY cov neeg siv tau ntxiv PoE kev txhawb nqa rau kev sib txuas lus Ethernet uas siv ib qho khoom me me thiab pheej yig hu ua PoE injector. Cov khoom siv feature Ethernet ports (thiab lub hwj huam hluav taws xob) uas ua rau cov cab hluav taws xob hauv Ethernet.
Yam Khoom Siv Uas Muaj Haujlwm Muaj Hwjchim Ntau Tshaj Tawm?
Tus nqi hluav taws xob (hauv watts) uas tau muab los ntawm Ethernet tsuas yog kev siv tshuab. Tus nqi pes tsawg ntawm lub hwj chim xav tau yog nyob ntawm qhov kwv yees li ntawm cov ntawv pov thawj ntawm PoE thiab qhov kos duab ntawm cov khoom siv. IEEE 802.3af, piv txwv li, tsuas yog 12.95W ntawm lub hwj chim ntawm kev sib txuas. Desktop PCs thiab laptops feem ntau tsis tuaj yeem khiav lag luam dua PoE vim lawv xav tau kev pab ntau dua (feem ntau 15W thiab), tiam sis cov khoom siv tau zoo li cov webcams uas ua haujlwm tsawg dua 10W. Cov lag luam kev lag luam tej zaum kuj muaj feem xyuam mus rau PoE hloov los ntawm cov pab pawg ntawm cov webcams lossis cov khoom siv zoo sib xws.