Umngane wabuza ukuthi ungasebenzisa ulayini wefoni ukuxhuma i-POE noma usebenzise ama-cores amane ocingo lwenethiwekhi ukuze wenze ikhanda le-crystal, abangane abaningi badidekile ikhebula lenethiwekhi 1236 kanye ne-4578 yimuphi ugesi? Siphinde sathumela indatshana efanayo ngalo mbuzo, namuhla siza futhi ukuze sibe nokuqonda okuphelele.
1. Yikuphi okudlulisa idatha ngokuqondile futhi okunikeza amandla
Ukushintsha kwezinkondlo ezijwayelekile kunamazinga amabili, i-802.11af kanye ne-802.11at, futhi zombili izinkondlo ezijwayelekile zisekela izindlela ezimbili:
① 1236 ithatha kokubili idatha kanye nokunikezwa kwamandla;
② 1236 go idatha, ukunikezwa kwamandla ka-4578;
2. Iluphi uhlobo lwendlela yokunikeza amandla esetshenziswayo ngempela
Iyiphi imodi yokuphakelwa kwamandla esetshenziswa empeleni incike kuShintshanisa amasheya POE, zombili ezihambisana namakhamera ethu anikwe amandla i-POE. Imbongi izoyihlulela ngesimo.
Ngenxa yama-cores amane angu-1,2,3, kanye no-6 asetshenziswa ama-megabytes angu-100 okuxhumana, ama-gigabit megabytes okuxhumana asebenzisa wonke ama-cores angu-8.ngakho-ke:
1. Nge-switch ye-PoE engu-100 trillion: i-wire core eyi-1,2,3,6 kuphela exhunyiwe, kokubili idatha namandla okunikezwa kwamandla; kunjalo, uma ufuna idatha engu-1236, ukunikezwa kwamandla ka-4578, bese kuba izintambo eziyi-8, futhi uqinisekise ama-cores angu-8 wonke axhunyiwe.
2. Ngeswishi ye-Gigabit PoE: ikhawulelwe isidingo sokudluliswa kwedatha, kungakhathaliseki ukuthi ngaleyo ndlela, zonke izintambo zenethiwekhi eziyi-8-core zidinga ukuxhunywa ngokugcwele.
3. Yiziphi izindlela ezimbili zokuthi aShintshanisa amasheya POE
Amandla okunikezwa kwamandla e-IEEE802.3af yi-15.4W, uma amandla ekhamera engu-10W, ukushintshwa kwamandla kagesi we-802.af kungasetshenziswa;
IEEE802.3at amandla okunikezwa kwamandla angu-30W, uma amandla ekhamera engu-20W, 802.3at POE switch kufanele isetshenziswe;
I-802.3at ihambisana phansi, ngakho-ke amakhamera anikwe amandla angu-802.3af anganikwa amandla yi-802.3af noma kumaswishi;
amakhamera anikwe amandla angu-802.3at anikwa amandla kuphela ama-switch angu-802.3at;
Kwezinye izisetshenziswa zangaphambili zamandla aphezulu, njengomshini webhola, amandla okukhiphayo awakwazi ukuhlangabezana nezidingo, awakwazi ukuba yi-P yokushintsha kwe-POE.
Isibonelo, amandla eminye imishini yebhola yi-40W, futhi amandla aphezulu we-port eyodwa ye-PoE awekho ngaphezu kwe-30W, ngakho-ke amandla echweba elilodwa lokushintsha alikwazi ukuhlangana, ngakho-ke imodyuli ye-POE yomshini webhola iyadingeka. Ngayibona kahle ngesikhathi ngiyithenga.
4. Ukude kangakanani ukunikezwa kwe-POE?
Ngebanga lokunikezwa kwamandla ka-poe, kube khona abangani abaningi beqembu le-VIP lobuchwephesha bamanje abaxoxa ngokuthi ingabe amandla e-poe angadlula amamitha ayi-100? Le nkinga ngempela ithintwa yizici eziningi, abanye abangani abangaphezu kwamamitha angu-100 wokunikezwa kukagesi akunawo umthelela, kodwa abanye kumamitha angu-90 okunikezwa kwamandla kagesi nakho akuzinzile, esizoxoxa ngakho ndawonye.
Kufanele ubone imikhiqizo yokushintsha amandla e-PoE engu-200 m, 250 m, 300 m ikhangiswe ku-Moments noma ku-inthanethi. Kuzoba nokungabaza: ibanga lokudlulisa ikhebula lenethiwekhi aliwona amamitha ayi-100? Imuphi umugqa ongasetshenziswa ukuze kuzuzwe ibanga lenkulumo-ze?
Ngaphezu kwamamitha ayi-100 okudluliselwa kwebanga elide kufanele kube ngaphezu kwezigaba ezi-5, futhi kube yizintambo eziyi-8 zenethiwekhi. Ngesikhathi esifanayo, i-poe switch inikwa amandla amaseli angu-8, futhi ikhamera kufanele inikwe amandla amaseli angu-8. Iphuzu elibalulekile ukuthi imishini yokushintsha ye-PoE isekela imodi yokwandisa inethiwekhi. Ngemva kokuvula, lapho usebenzisa ukudluliswa kwedatha nangaphezulu kwekhebula lenethiwekhi, ibanga lokuphakelwa kwamandla lembobo ehambisanayo lingafinyelela ngaphezu kwamamitha ayi-100. Ngokushintsha kwenkondlo evamile, siphakamisa ukuthi ifaneleke kakhulu phakathi kwamamitha ayi-100.
Kungani kunconywa ukuyisebenzisa phakathi kwamamitha ayi-100?
Ake sibheke ukumelana kwezintambo ezihlukahlukene zenethiwekhi.
Ukumelana namamitha angu-100 ezinhlobo ezihlukahlukene zezinto zezintambo ezisontekile:
1. I-Copper-clad steel network wire: 75-100 Ω
2. Intambo ye-aluminiyamu ene-copper: 24-28 Ω
3. Ikhebuli yenethiwekhi yesiliva yephakheji yethusi: 15 Ω
4. Intambo yenethiwekhi yethusi egqize ngethusi: 42 Ω
5. Intambo yethusi ye-anaerobic: 9.5 Ω
Ibanga elifushane, liba lincane ukumelana, lapho ukuphikiswa kocingo lwenethiwekhi yethusi ye-anaerobic kukuncane kakhulu, ngakho-ke yisebenzise ukuze unikeze ezinzile kakhulu, ukumelana nebanga lamamitha ayi-100 kungu-9.5 Ω kuphela, kuthiwani uma ukusetshenziswa kungamamitha angama-50? Bese ukumelana kwayo kube ngu-9.5 Ω uhhafu, ukulahlekelwa kokunikezwa kwamandla ka-poe kuncane (ukulahleka kwefomula yamandla, Q=I²Rt, ukulahlekelwa kwamandla ngokulingana nokumelana), bese kuba yilapho ukunikezwa kwamandla kuzinzile. Ngakho-ke ngaphezu kwamamitha angu-100 okudluliselwa kwebanga, qiniseka ukuthi usebenzisa intambo yenethiwekhi enhle.
Isikhathi sokuthumela: Nov-02-2022