Ngophuhliso olukhawulezayo lweefowuni ze-IP, i-wireless LAN ukufikelela kwindawo ye-APs, kunye nokubeka iliso kwinethiwekhi kwiminyaka yamuva nje, umda wobugcisa uya unyuka kwaye uphezulu, kwaye inkxaso yobugcisa enikezelwa ngabavelisi iya iba ngokubanzi kwaye icwangciswe.Phakathi kotshintshiselwano lobugcisa, phakathi kwezona zinto zibhidekileyo ziinkampani zobunjineli yingxaki yokunikezelwa kwamandla e-POE.
Umbuzo 1: Yintoni iteknoloji yePoE?
I-PoE (i-Power Over Ethernet) ibhekisela kwi-Ethernet Cat.5 isiseko se-cabling ekhoyo ngaphandle kotshintsho, kwezinye ii-terminals ezisekelwe kwi-IP (ezifana neefowuni ze-IP, i-wireless LAN access point AP, iikhamera zenethiwekhi njl.) Ngoxa uhambisa idatha, iyakwazi kwakhona. ukubonelela ngeteknoloji yonikezelo lwamandla eDC kwizixhobo ezinjalo.Itekhnoloji ye-PoE inokuqinisekisa ukhuseleko lwe-cabling ekhoyo ecwangcisiweyo ngelixa iqinisekisa ukusebenza okuqhelekileyo kwenethiwekhi ekhoyo, ukunciphisa kakhulu iindleko.
Inkqubo ye-PoE epheleleyo iquka iinxalenye ezimbini: izixhobo zokubonelela ngombane (i-PSE, i-Power Sourcing Equipment) kunye nezixhobo zokufumana amandla (iPD, i-Powered Device).
Izixhobo zoBonelelo lwaMandla (PSE): Izitshixo ze-Ethernet, iirotha, ii-hubs, okanye ezinye izixhobo zokutshintsha inethiwekhi ezixhasa i-POE
Isixhobo sokufumana amandla (PD): Iprojekthi yokugubungela ngaphandle kwamacingo ikakhulu i-AP engenazingcingo.
Umbuzo 2: Ngaba umbane we-PoE uzinzile?
Ukusuka kumbono wezobuchwepheshe, iteknoloji ye-PoE iphuhliswe kwiminyaka kwaye ngoku ikwinqanaba eliqolileyo kakhulu.Nangona kunjalo, ngenxa yoxinzelelo lwangoku lweendleko zemarike yokubeka iliso, umgangatho weeswitshi ze-PoE okanye iintambo ezisetyenzisiweyo ziphantsi kakhulu, okanye uyilo lwesikimu ngokwalo alunangqiqo, olukhokelela kumthwalo onzima ngokukodwa kwiiprojekthi ezisebenzisa umbane we-PoE.Umbono ozinzileyo.
Kwimeko yokuhanjiswa kwedatha enkulu kakhulu, amandla aphezulu, kunye nemfuno ye-24/7 yomsebenzi ongaphazamisekiyo, ukusetyenziswa kwezixhobo eziqinisekisiweyo ze-PoE kunye neengcingo zisiqinisekiso sokuzinza kwenkqubo yonke.
Umbuzo wesi-3: Ziziphi iingenelo zezisombululo zobonelelo lwamandla e-PoE?
1. Yenza lula i-wiring kwaye ugcine iindleko zabasebenzi
Intambo yenethiwekhi ithumela idatha kunye namandla ngaxeshanye.I-PoE iphelisa imfuno yombane obiza imali eninzi kunye nexesha elithathayo ukufakela umbane, iindleko zokonga kunye nexesha.
2. Ikhuselekile kwaye ifanelekile
Izixhobo zokubonelela ngombane we-PoE ziya kubonelela ngombane kuphela kwisixhobo esifuna ukunikwa amandla.Kuphela xa izixhobo ezifuna ukunikwa amandla zixhunyiwe, kuya kubakho i-voltage kwikhebula le-Ethernet, ngaloo ndlela kupheliswe umngcipheko wokuvuza kumgca.Abasebenzisi banokudibanisa ngokukhuselekileyo izixhobo zokuqala kunye nezixhobo ze-PoE kwinethiwekhi, kwaye ezi zixhobo zinokuhlalisana kunye neentambo ze-Ethernet ezikhoyo.
3. Ukuququzelela ulawulo olukude
Njengokudluliselwa kwedatha, i-PoE inokubeka iliso kunye nokulawula isixhobo ngokusebenzisa iProtocol yoLawulo lweNethiwekhi elula (SNMP).Lo msebenzi unokubonelela ngemisebenzi efana nokuvala ebusuku kunye nokuqalisa kwakhona kude.
Umbuzo 4: Yeyiphi imingcipheko okanye ukungalungi kobuchwephesha bobonelelo lwamandla e-PoE kwizicelo zobunjineli?
1. Amandla anganeleyo, ukuphela kokufumana amandla akukwazi ukuqhutyelwa: i-802.3af standard (PoE) amandla aphumayo yi-15.4W.Kwizixhobo zangaphambili zamandla aphezulu, amandla aphumayo akakwazi ukuhlangabezana neemfuno.
2. Umngcipheko ugxininiswe kakhulu: Ngokuqhelekileyo, i-PoE switch iya kunika amandla kwii-AP ezininzi ngexesha elinye.Nakuphi na ukungaphumeleli kwemodyuli yombane we-POE yokutshintsha kuya kubangela ukuba zonke izixhobo zingaphumeleli ukusebenza, kwaye umngcipheko ugxininiswe kakhulu.
3. Izixhobo eziphezulu kunye neendleko zokulondoloza: Xa kuthelekiswa nezinye iindlela zokubonelela ngombane, iteknoloji yokubonelela ngombane we-PoE iya kwandisa umsebenzi wokulondoloza emva kokuthengisa.Kwimeko yokhuseleko kunye nokuzinza, ukuzinza kunye nokhuseleko lonikezelo lwamandla olwahlukileyo luhle kakhulu.
Umbuzo 5: Indlela yokukhetha utshintsho lwe-PoE?
1. Ubungakanani bamandla afunekayo ukunika amandla izixhobo: Ukutshintsha kwe-PoE kusebenzisa imigangatho eyahlukeneyo, kwaye amandla okuphuma aya kuba ahluke, umzekelo: IEEE802.3af ayidluli i-15.4W, ngenxa yokulahlekelwa kweengcingo zokuhambisa, inokubonelela ngezixhobo usetyenziso lwamandla olungadlulanga kwi-12.95W ixhaswe yi.Iiswitshi ze-PoE ezihambelana nomgangatho we-IEEE802.3at zinokubonelela ngamandla kwizixhobo ezisebenzisa amandla angekho ngaphezulu kwe-25W.
2. Zingaphi izixhobo ezinokuthi zinikwe amandla: Isalathisi esibalulekileyo sokutshintsha kwe-PoE ngamandla onke ombane we-PoE.Ngaphantsi komgangatho we-IEEE802.3af, ukuba amandla e-PoE ewonke e-24-port ye-PoE switch afikelela kwi-370W, ngoko inokubonelela ngezibuko ze-24 (370 / 15.4 = 24), kodwa ukuba i-single-port power supply ngokwe-IEEE802 .3 kwinqanaba eliqhelekileyo Amandla abalwa kwi-30W, kwaye ngexesha elifanayo, inokubonelela kuphela amandla kwii-12 kumachweba kakhulu (370/30 = 12).
3. Kufuneka inani lojongano, nokuba kuzisa i-fiber port, kunye okanye ngaphandle kolawulo lwenethiwekhi, isantya (10/100 / 1000M).
Umbuzo wesi-6: Umgama wothumelo okhuselekileyo wobonelelo lwamandla lwe-PoE?Ziziphi iingcebiso zokukhethwa kweentambo zenethiwekhi?
Umgama wothumelo okhuselekileyo wonikezelo lwamandla e-POE ziimitha ezili-100.Kunconywa ukusebenzisa zonke iintlobo ezintlanu zeentambo zobhedu.
Intambo yothungelwano lonikezelo lwamandla e-POE ifuna ukuba le ngxaki ibe yingxaki kuphela kumazwe anjengeTshayina nakwamanye amazwe apho iimpahla zomgunyathi kunye neempahla ezitshiphu zixhaphakileyo.Asiyongxaki kumazwe amaninzi ahambele phambili kwezoqoqosho.Umgangatho we-POE IEEE 802.3af ufuna ukuba amandla okukhutshwa kwe-PSE port port yi-15.4W okanye i-15.5W.Isixhobo sePD esifumana amandla emva kokuhambisa iimitha ezili-100 kufuneka singabi ngaphantsi kwe-12.95W.Ngokutsho kwe-802.3af yexabiso eliqhelekileyo langoku le-350ma, ukuxhathisa kwentambo ye-network ye-100 yeemitha kufuneka Ku (15.4-12.95W) / 350ma = 7 ohms okanye (15.5-12.95) / 350ma = 7.29 ohms.
Intambo yenethiwekhi eqhelekileyo ngokwendalo iyahlangabezana nale mfuneko.Umgangatho we-IEEE 802.3af poe wonikezelo lwamandla ngokwawo ulinganiswa ngentambo yenethiwekhi eqhelekileyo.Isizathu sokuba iimfuno zentambo zonikezelo lwamandla ombane wePOE zivela kungenxa yokuba iintambo ezininzi zothungelwano kwimarike ziintambo zenethiwekhi ezingezizo ezisemgangathweni, ezingaveliswanga ngokungqongqo ngokungqinelana neemfuno zeentambo zomnatha eziqhelekileyo.Izixhobo zeentambo zothungelwano ezingekho mgangathweni kwimarike ikakhulu ziquka intsimbi yobhedu, i-copper-clad aluminium, kunye nentsimbi yobhedu.Ezi ntambo zenethiwekhi zinexabiso elikhulu lokuxhathisa kwaye azifanelekanga unikezelo lwamandla lwe-POE.Umbane we-POE kufuneka usebenzise i-oxygen-free copper network cable, oko kukuthi, intambo yenethiwekhi eqhelekileyo.