Ngokuthuthuka okusheshayo kwezingcingo ze-IP, ama-AP wephoyinti lokufinyelela le-LAN engenantambo, nokuqapha kwenethiwekhi eminyakeni yamuva, umkhawulo wobuchwepheshe uya ngokuya ukhuphuka, futhi ukwesekwa kobuchwepheshe okuhlinzekwa abakhiqizi kuya ngokuya kuhlanganisa futhi kuhlelekile. Phakathi kokuhwebelana kwezobuchwepheshe, phakathi kokudidaniswa kakhulu yizinkampani zobunjiniyela kuyinkinga yokunikezwa kwamandla ka-POE.
Umbuzo 1: Buyini ubuchwepheshe be-PoE?
I-PoE (Power Over Ethernet) ibhekisela kungqalasizinda yekhebula ye-Ethernet Cat.5 ngaphandle kwanoma yiziphi izinguquko, kwamanye amatheminali asekelwe ku-IP (njengamafoni e-IP, iphoyinti lokufinyelela le-LAN engenawaya AP, amakhamera enethiwekhi Njll.) Nakuba idlulisela idatha, ingakwazi futhi. hlinzeka ngobuchwepheshe bokuhlinzeka ngogesi we-DC kumadivayisi anjalo. Ubuchwepheshe be-PoE bungaqinisekisa ukuphepha kwekhebula ehleliwe ekhona kuyilapho kuqinisekisa ukusebenza okuvamile kwenethiwekhi ekhona, kunciphisa kakhulu izindleko.
Uhlelo oluphelele lwe-PoE luhlanganisa izingxenye ezimbili: okokusebenza kwamandla kagesi (PSE, Power Sourcing Equipment) kanye nemishini yokwamukela amandla (PD, Powered Device).
Isisetshenziswa Sokuhlinzeka Ngamandla (PSE): I-Ethernetamaswishi, imizila, amahabhu, noma ezinye izinto zokusebenza zenethiwekhi ezisekela i-POE
Idivayisi yokwamukela amandla (PD): Iphrojekthi ehlanganisa okungenantambo ikakhulukazi i-AP engenantambo.
Umbuzo 2: Ingabe ukunikezwa kwamandla kwe-PoE kuzinzile?
Ngokombono wezobuchwepheshe, ubuchwepheshe be-PoE buye bathuthuka phakathi neminyaka edlule futhi manje busesigabeni esivuthiwe kakhulu. Kodwa-ke, ngenxa yengcindezi yamanje yezindleko zemakethe yokuqapha, ikhwalithi ye-PoEamaswishinoma izintambo ezisetshenzisiwe ziphansi kakhulu, noma idizayini yesikimu ngokwayo ayinangqondo, okubangela umthwalo osindayo ikakhulukazi wamaphrojekthi asebenzisa ukunikezwa kwamandla kwe-PoE. Ukubuka okuzinzile.
Endabeni yokudluliswa kwedatha enkulu kakhulu, amandla aphezulu, kanye nesidingo somsebenzi ongaphazamiseki we-24/7, ukusetshenziswa kwemishini ye-PoE eqinisekisiwe nezintambo kuyisiqinisekiso sokuzinza kwalo lonke uhlelo.
Umbuzo 3: Yiziphi izinzuzo zezixazululo zokuphakelwa kwamandla ka-PoE?
1. Yenza izintambo zibe lula futhi wonge izindleko zabasebenzi
Ikhebula lenethiwekhi lidlulisela idatha namandla ngesikhathi esisodwa. I-PoE iqeda isidingo sezinto zikagesi ezibizayo kanye nesikhathi esisithathayo ukufaka izinto zikagesi, ukonga izindleko nesikhathi.
2. Iphephile futhi ifanelekile
Imishini yokuphakela ugesi ye-PoE izohlinzeka kuphela ngogesi kumishini edinga ukunikwa amandla. Kuphela uma okokusebenza okudingeka ukuthi kunikwe amandla kuxhunyiwe, kuzoba khona i-voltage kukhebula ye-Ethernet, ngaleyo ndlela kuqedwe ubungozi bokuvuza kulayini. Abasebenzisi bangaxuba ngokuphephile amadivayisi oqobo namadivayisi e-PoE kunethiwekhi, futhi lawa madivayisi angahlalisana nezintambo ezikhona ze-Ethernet.
3. Ukwenza lula ukuphathwa okukude
Njengokudluliswa kwedatha, i-PoE ingaqapha futhi ilawule idivayisi ngokusebenzisa i-Simple Network Management Protocol (SNMP). Lo msebenzi ungahlinzeka ngemisebenzi efana nokuvala shaqa ebusuku nokuqalisa kabusha ukude.
Umbuzo 4: Yiziphi izingozi noma okubi kobuchwepheshe bokunikezwa kwamandla we-PoE ezinhlelweni zobunjiniyela?
1. Amandla anganele, isiphetho sokwamukela amandla asikwazi ukushayelwa: 802.3af standard (PoE) amandla okukhipha ngu-15.4W. Okokusebenza okuphambili kwamandla aphezulu, amandla okukhiphayo awakwazi ukuhlangabezana nezidingo.
2. Ubungozi bugxile kakhulu: Ngokuvamile, i-PoEshintshaizohlinzeka amandla kuma-AP amaningi ngesikhathi esisodwa. Noma yikuphi ukwehluleka kwemojula yokuphakela amandla ye-POE yeshintshakuzobangela ukuthi zonke izinto zokusebenza zihluleke ukusebenza, futhi ubungozi bugxile kakhulu.
3. Izindleko eziphakeme zemishini kanye nokugcinwa kwazo: Uma kuqhathaniswa nezinye izindlela zokuphakelwa kukagesi, ubuchwepheshe bokuhlinzeka ngogesi we-PoE buzokhuphula umsebenzi wokulungisa ngemva kokuthengisa. Ngomqondo wokuphepha nokuzinza, ukuzinza nokuphepha kokunikezwa kwamandla okuhlukene kuhle kakhulu.
Umbuzo 5: Indlela yokukhetha i-PoEshintsha?
1. Angakanani amandla adingekayo ukuze kusetshenziswe imishini: I-PoEamaswishisebenzisa amazinga ahlukene, futhi amandla okukhiphayo azohluka, isibonelo: I-IEEE802.3af ayidluli i-15.4W, ngenxa yokulahlekelwa izintambo zokudlulisela, ingahlinzeka ngemishini ngokusetshenziswa kwamandla okungeqile ku-12.95W inikwe amandla. I-PoEamaswishiezithobelana nezinga le-IEEE802.3at zinganikeza amandla kumadivayisi asebenzisa amandla angeqi ku-25W.
2. Mangaki amadivaysi anganikwa amandla: Inkomba ebalulekile ye-PoEamaswishiamandla aphelele okunikezwa kwamandla kwe-PoE. Ngaphansi kwezinga le-IEEE802.3af, uma ingqikithi yamandla e-PoE we-PoE yamachweba angama-24shintshaifinyelela ku-370W, bese ingahlinzeka ngamachweba angama-24 (370 / 15.4 = 24), kodwa uma kungumthombo wamandla wembobo eyodwa ngokwezinga le-IEEE802.3at Amandla abalwa ku-30W, futhi ngesikhathi esifanayo, angakwazi kuphela hlinzeka ngamandla ezimbobeni eziyi-12 okungenani (370/30 = 12).
3. Udinga inombolo yokuxhumana, noma ngabe ukuletha imbobo yefiber, noma ngaphandle kokuphathwa kwenethiwekhi, isivinini (10/100 / 1000M).
Umbuzo 6: Ibanga eliphephile lokudlulisa amandla e-PoE? Yiziphi iziphakamiso zokukhethwa kwezintambo zenethiwekhi?
Ibanga eliphephile lokudlulisa amandla e-POE lingamamitha ayi-100. Kunconywa ukusebenzisa zonke izinhlobo ezinhlanu zezintambo zethusi.
Intambo yenethiwekhi ye-POE idinga ukuthi le nkinga ibe yinkinga kuphela emazweni afana ne-China nakwamanye amazwe lapho kugcwele izimpahla zomgunyathi nezimpahla ezishibhile. Akuyona inkinga emazweni amaningi athuthukile. Izinga le-POE IEEE 802.3af lidinga ukuthi amandla okukhiphayo wembobo yokukhipha ye-PSE abe ngu-15.4W noma 15.5W. Idivayisi ye-PD ethola amandla ngemva kokudlulisa amamitha angu-100 akumele ibe ngaphansi kuka-12.95W. Ngokusho kwenani lamanje elijwayelekile elingu-802.3af elingu-350ma, ukumelana kwentambo yenethiwekhi engamamitha ayi-100 kumele Kube (15.4-12.95W) / 350ma = 7 ohms noma (15.5-12.95) / 350ma = 7.29 ohms.
Ikhebuli yenethiwekhi evamile ihlangabezana ngokwemvelo nale mfuneko. Izinga le-IEEE 802.3af poe lokunikezwa kwamandla ngokwalo likalwa ngentambo yenethiwekhi evamile. Isizathu sokuthi kungani izidingo zekhebula lenethiwekhi ye-POE ziphakama kungenxa yokuthi izintambo eziningi zenethiwekhi emakethe ziyizintambo zenethiwekhi ezingajwayelekile, ezingakhiqizwe ngokuhambisana ngokuqinile nezidingo zezintambo zenethiwekhi ezijwayelekile. Izinto zezintambo zenethiwekhi ezingajwayelekile emakethe ikakhulukazi zifaka insimbi egqoke ithusi, i-aluminiyamu ye-copper-clad, ne-iron-clad iron. Lezi zintambo zenethiwekhi zinamanani amakhulu okumelana futhi azifanele ukunikezwa kwamandla we-POE. Ukunikezwa kwamandla e-POE kufanele kusebenzise intambo yenethiwekhi yethusi engenawo umoya-mpilo, okungukuthi, intambo yenethiwekhi evamile.