IUkutshintsha kwePoElutshintsho oluxhasa unikezelo lwamandla kwintambo yenethiwekhi.Xa kuthelekiswa nokutshintsha okuqhelekileyo, i-terminal yokufumana amandla (efana ne-AP, ikhamera yedijithali, njl.) Akufuneki ukuba ifakwe kwintambo yombane, kwaye ukuthembeka kwenethiwekhi yonke kuphezulu.
Umahluko phakathi kokutshintsha kwePoE kunye nokutshintsha okuqhelekileyo
Ukutshintshela kwe-PoE kwahlukile kukutshintsha okuqhelekileyo, ukutshintshela kwe-PoE akukwazi ukubonelela kuphela umsebenzi wokudluliselwa kokutshintsha okuqhelekileyo, kodwa nokubonelela ngomsebenzi wokubonelela ngombane ukuya kwelinye isiphelo sentambo yenethiwekhi.Ngokomzekelo, kukho ikhamera yokucupha yedijithali (idinga ukunikezelwa kwamandla sebenza ngokuqhelekileyo), kodwa ayidityaniswanga kunikezelo lwamandla, kodwa iqhagamshelwe kwisitshixo esiqhelekileyo ngentambo yenethiwekhi.Kule meko, ikhamera ayisebenzi.Ukuba ikhamera ayixhunyiwe kumandla ombane, kodwa intambo yayo yenethiwekhi yokudlulisa ixhunyiwe kwi-PoE switch, ikhamera inokusebenza ngokuqhelekileyo.
I-PoE yohlulwe ngokwemigangatho kunye nengekho mgangathweni.Umgangatho uya kufumanisa ukuba isixhobo sothungelwano esiqhagamsheleneyo sinesiphelo sokufumana amandla e-PoE.Ukuba kukho, kuya kunikwa amandla, ukuba akunjalo, ayiyi kunikwa amandla kwaye ibonelele kuphela ukuhanjiswa kwedatha.Abangengabo abasemgangathweni baya kunikwa ngokuthe ngqo amandla.Ukuba le khonkco ayibonwa, isixhobo sinokutshiswa ngaphandle.
I-POE yokutshintsha iteknoloji kunye neenzuzo
Kukho imigangatho emibini yokutshintsha kwe-PoE engundoqo kwimarike, i-IEEE802.3af kunye ne-802.3at, ngokulandelanayo ichaza amandla ombane we-15.4W kunye ne-30W, kodwa ngenxa yelahleko kwinkqubo yokuhanjiswa, ukunikezelwa kwamandla okwenene yi-12.95W. kunye ne-25.5W, umbane olinganisiweyo yi-DC 48v.
Xa usebenzisa i-PoE switch exhasa umgangatho we-IEEE802.3af, amandla esixhobo esinamandla asikwazi ukudlula i-12.95W;ngokufanayo, xa usebenzisa i-PoE switch ye-IEEE802.3at esemgangathweni, amandla esixhobo esinikwe amandla akakwazi ukudlula i-25.5W.
Ngokuqhelekileyo, utshintsho lwe-PoE oluxhasa i-IEEE802.3af / kumgangatho ngexesha elifanayo, ukunikezelwa kwamandla kuyaguquguquka.Ngokomzekelo, ukuba iqhagamshelwe kwisixhobo se-5W, inikeza i-5W yamandla;ukuba iqhagamshelwe kwisixhobo se-20W, ke ibonelela nge-20W yamandla.
Iiswitshi ze-PoE zizitshintshi ezixhasa ukunikezelwa kwamandla kwiintambo zenethiwekhi.Xa kuthelekiswa nokutshintsha okuqhelekileyo, ii-terminals (ezifana nee-APs, iikhamera zedijithali, njl. njl.) akufuneki ukuba zifakwe kwintambo yombane, kwaye zithembeke ngakumbi kwinethiwekhi yonke.IUkutshintsha kwePoEayikwazi ukubonelela kuphela umsebenzi wothumelo wokutshintsha okuqhelekileyo, kodwa nokubonelela ngomsebenzi wokubonelela ngombane kwelinye icala lentambo yenethiwekhi.
Isixhobo se-PoE se-back-end sidinga kuphela intambo yenethiwekhi enye, egcina indawo kwaye inokuhanjiswa ngokuthanda (ilula kwaye ilula), ukugcina iindleko.
Ngethuba nje i-PoE switch ixhunywe kwi-UPS, inokubonelela ngamandla kuzo zonke izixhobo ezinxulumene ne-POE-emva xa umbane ucinyiwe.Abasebenzisi banokudibanisa ngokuzenzekelayo kwaye ngokukhuselekileyo izixhobo zokuqala kunye nezixhobo ze-PoE kwinethiwekhi, kwaye ezi zixhobo zinokuhlalisana kunye neentambo ze-Ethernet ezikhoyo.