I-Power phezu kwe-Ethernet (PoE) iteknoloji yenza ukuba izixhobo zentambo eziqhelekileyo ze- Ethernet zisebenze njengezintambo zamandla. Kwinkonzo enikwe amandla ye-PoE, ukuhamba kwamandla kagesi ngokuthe ngqo (DC) kuhamba phezu kwekhebula lenethiwekhi kunye neendlela eziqhelekileyo zedatha yedatha. Iinqununu ezininzi zePoE zilandela i-IEEE standard 802.3af okanye 802.3at .
Amandla ngaphezu kwe-Ethernet yenzelwe ukusetyenziswa kunye nezixhobo zekhompyutha eziphathekayo ezingenazintambo ezifana neendawo zokufikelela kwi-Wi-Fi (APs) , ii-webcams kunye neefowuni zeVoIP . I-PoE ivumela amadivaysi othungelwano ukuba afakwe kwiiplantshi okanye kwiindonga zodonga apho izixhobo zombane zingenawo lula.
I-teknoloji engahambelani ne-PoE, i- Ethernet kumigqa yamandla yenza ukuba imigqa yamandla kagesi eqhelekileyo isebenze njengamaqhagamshelo e-intanethi ye-Ethernet.
Kutheni iInternet Network Networks Don & # 39; t Sebenzisa amandla ngaphezu kwe-Ethernet
Kungenxa yokuba amakhaya aneendawo ezininzi zokungena kwamandla kunye nezixhobo ezimbalwa zodonga lwe-Ethernet, kwaye ezininzi izixhobo zogqirha zisebenzisa i-Wi-Fi ukuxhomekeka esikhundleni se-Ethernet, izicelo ze-PoE zokunxibelelana kweekhaya zilinganiselwe. Abathengisi benethiwekhi baquka kuphela ukuxhasa inkxaso ye-PoE kwii- routers zabo zokugqibela kunye nezoshishino kunye noshintsho lwenethiwekhi kwesi sizathu.
Abasebenzisi be-DIY bangongeza inkxaso ye-PoE kwi-Ethernet uxhumano usebenzisa idilesi encinci kunye nexabiso elincinci elibizwa ngokuba yi- PoE injector. Ezi zixhobo ziquka izibuko ze-Ethernet (kunye ne-adapter yamandla) ezivumela iikhomputha ze-Ethernet eziqhelekileyo ngamandla.
Ziziphi iintlobo zezixhobo zokusebenza ezisebenza kunye namandla ngaphezu kwe-Ethernet?
Isixa samandla (kwi-watts) esinokunikezwa nge-Ethernet sinqunyulwe ngeteknoloji. Umyinge owenziweyo wamandla ofunekayo kuxhomekeke ekutheni umthamo womthombo we-PoE kunye ne-power draw yeeklayenti zabaxumi. IEEE 802.3af, umzekelo, iqinisekisa kuphela i-12.95W yamandla kwixhumo olunikeziweyo. Iikhompyutheni zeeDesktop kunye nee-laptops ngokubanzi azikwazi ukusebenza kwi-PoE ngenxa yezidingo zamandla aphezulu (ngokuqhelekileyo kwi-15W nangaphezulu), kodwa iifowuni eziphathekayo ezifana ne-webcams ezisebenza ngaphantsi kwe-10W zinako. Iintanethi zoshishino ngamanye amaxesha ziquka ukutshintsha kwe-PoE apho iqela lewebhu okanye amadivayisi afanayo asebenza.