Ubuchwepheshe ngaphezu kwe-Ethernet (PoE) ubuchwepheshe kwenza izintambo ezivamile ze- Ethernet zenethiwekhi zisebenze njengezintambo zamandla. Inethiwekhi enikwe amandla ye-PoE, ukuhamba kwamandla kagesi okuqondile (DC) kugeleza phezu kwekhebula lenethiwekhi kanye nomgwaqo wedatha ejwayelekile ye-Ethernet. Amadivayisi amaningi we-PoE alandela i-IEEE standard 802.3af noma 802.3at .
Amandla ngaphezu kwe-Ethernet yenzelwe ukusetshenziswa ngezinsiza zekhompyutha eziphathekayo nezingenazintambo ezifana namaphoyinti okufinyeleleka kwe-Wi-Fi (APs) , ama-webcams, namafoni we- VoIP . I-PoE ivumela amadivaysi enethiwekhi ukuba afakwe ekufakweni noma ezindaweni zokudonga lapho izindawo zokugesi zingekho kalula.
Ubuchwepheshe obungahambisani nemigqa ye- PoE, Ethernet ngaphezu kwamandla kwenza imigqa ejwayelekile yamandla kagesi ukuthi isebenze njengezixhumanisi zenethiwekhi ye-Ethernet ende.
Okwenza Amanethiwekhi Wasekhaya Amaningi Angaboni Amandla Ngaphezu kwe-Ethernet
Ngoba izindlu zivame ukuba nezindawo eziningi zokuthenga amandla namaphakheji amancane edonga e-Ethernet, futhi amagajethi amaningi omthengi asebenzisa ukuxhumeka kwe-Wi-Fi esikhundleni se-Ethernet, izinhlelo zokusebenza ze-PoE zokuxhumana ngekhaya zilinganiselwe. Abathengisi beNethiwekhi ngokuvamile bafaka ukwesekwa kwe-PoE kumabhayisikili abo asezingeni eliphezulu nokuhamba kwamabhizinisi kanye nokushintsha kwenethiwekhi ngalesi sizathu.
Abathengi be-DIY bangafaka ukwesekwa kwe-PoE kuxhumano lwe-Ethernet besebenzisa idivayisi encane futhi eshibhile ebizwa nge- PoE injector. Lawa madivayisi afaka amarekhodi e-Ethernet (kanye ne-adapter yamandla) evumela izintambo ezijwayelekile ze-Ethernet ngamandla.
Yiziphi izinhlobo zezinsiza ezisebenza ngamandla ngaphezu kwe-Ethernet?
Inani lamandla (ku-watts) elinganikezelwa phezu kwe-Ethernet lilinganiselwe ubuchwepheshe. Umngcele oqondile wamandla adingekayo kuncike ekutheni umthamo olinganisiwe womthombo we-PoE kanye nomdwebo wamandla wamadivayisi wamakhasimende. IEEE 802.3af, isibonelo, iqinisekisa kuphela amandla angu-12.95W kuphela uxhumano olunikeziwe. Amakhompyutha we-Desktophu nama-laptops ngokuvamile akakwazi ukusebenza ngaphezu kwe-PoE ngenxa yezidingo zabo zamandla aphakeme (ngokujwayelekile ama-15W no-phezulu), kodwa amadivaysi aphathekayo afana ne-webcams asebenza ngaphansi kuka-10W. Amanethiwekhi ebhizinisi ngezinye izikhathi afaka ukushintshwa kwe-PoE lapho iqembu lama-webcams noma amadivaysi afanayo asebenza ngayo.