Makasitomala ena adafunsa, pali masiwichi a POE pamsika omwe amati amatha kufalitsa mamita 150 kapena 250 metres, ndizoona kapena zabodza?

Choyamba, tiyenera kumvetsetsa kuti POE ndi chiyani.POE ndiye chidule cha Power over Ethernet, kutanthauza kuti popanda kusintha kulikonse kwa Ethernet Cat.5 cabling infrastructure, ikhoza kugwiritsidwa ntchito pazigawo zina za IP (monga mafoni a IP).Ukadaulo womwe ungapereke mphamvu ya DC ku zida zotere potumiza zidziwitso za data, monga malo ofikira opanda zingwe a LAN, APs, ndi makamera a netiweki, ndikusintha komwe kumathandizira Mphamvu pa Ethernet.

Muyezo wa Ethernet umanena kuti mtunda wautali wotumizira ndi mamita 100, ndipo kuchedwa kwa deta ndi kutayika kwa paketi kumatha kuchitika ngati mtunda uposa mamita 100.
Koma si zingwe zonse zapaintaneti zomwe zimangokhala ma 100 metres.Mu ntchito yeniyeni, chingwe maukonde angathenso bwino kufalitsa mamita oposa 100, ndi khalidwe akhoza kufika mamita 120, ndiko kuti, mpweya wopanda mkuwa Cat.5 chingwe maukonde, kapena gulu 6 maukonde chingwe.

Opanga ambiri a PoE tsopano akuyambitsa magetsi a 150-mita, mtunda wautali, 250-mita, komanso ma switch a POE a mtunda wa mita 500.Kodi sizikutanthauza kuti mtunda wotumizira ma switch wamba a POE ndi mita 100, ndipo ndibwino kuwongolera mtunda mkati mwa 80 metres mukugwiritsa ntchito kwenikweni.Vuto ndi chiyani?

Tonse tikudziwa kuti mtunda wamagetsi a PoE umatsimikiziridwa ndi mtunda wotumizira chizindikiro cha data.Magetsi oyera amatha kufalikira patali kwambiri, koma mtunda wotumizira chizindikiro cha data umatsimikiziridwa ndi chingwe cha netiweki.Mtunda wotumizira wamtundu wamba 5 chingwe chizindikiro cha data ndi pafupifupi 100 metres.Pofuna kuonetsetsa kuti nyumbayo ili yabwino, nthawi zambiri imakhala 80-90 metres.Chonde dziwani kuti mtunda wotumizira pano umatanthawuza kuchuluka kwakukulu, monga 100M.
Opanga ambiri alemba kuti mtunda wotumizira ma switch awo a POE ukhoza kufika mamita 150, koma muzogwiritsa ntchito zenizeni, ngati masiwichi wamba a POE akufuna kukwaniritsa mtunda wamamita 150, ali ndi zofunika kwambiri pamtundu wa chingwe cha netiweki.Ayenera kugwiritsa ntchito zingwe zoposa gulu 6, zomwe zimawonjezera Ngakhale zili choncho, ngati dera lamkati la POE losinthana litenga chipangizo chodziwika bwino chosinthira maukonde ndi chipangizo chamagetsi cha POE, ndizosatheka kufikira maukonde a 100M ndi mtunda wotumizira. wa 150 metres, ngakhale chingwe chapamwamba cha intaneti chikugwiritsidwa ntchito.Idzawonjezera kugwiritsa ntchito mphamvu, kupitilira kugwiritsa ntchito mphamvu yamagetsi a PoE, ndikukhala yosakhazikika kwambiri, ndikugwa kwa paketi yayikulu, bandwidth yayikulu yotumizira ndi kutsika kwa ma sign, zomwe zimapangitsa kusakhazikika kwa ma sign, kukalamba kwa zida zosinthira za PoE, komanso kuvutikira pakukonza kotsatira. .

Ngakhale kusintha kwapamwamba kwa POE kokhala ndi katundu wathunthu wa 100M ndi kufalitsa kokhazikika kumatha kufika mamita 150 okha.Kodi mtunda wotumizira wa 250 metres ndi chiyani?Ndipotu, pali njira.Ngati mlingo wachepetsedwa kufika 10M, ndiko kuti, bandwidth kufala ndi 10M, mtunda kufala ndi bwino.Kufikira mamita 250 (malingana ndi khalidwe la chingwe cha intaneti), teknolojiyi siipereka bandwidth yapamwamba.Bandiwifi imaponderezedwa kuchokera ku 100M mpaka 10M, zomwe sizothandiza kufalitsa bwino kwa zithunzi zowunikira kwambiri.
Opanga ambiri, pamene akulimbikitsa malonda awo kuti athandizire kufalitsa kwa mamita 250, osatchula kutsika kwa 10M bandwidth, ndipo akukayikira kuti amabisa mwadala bandwidth kuchokera kwa makasitomala.

Kuphatikiza apo, si masiwichi onse a POE omwe amatha kufalitsa mita 250 mosavuta bola bandwidth itachepetsedwa kukhala 10M.Izi zimatengeranso mtundu wa switch.Ngati mkati kusintha Chip kusinthasintha kwa lophimba ndi osauka kwambiri ndi mphamvu Chip kasamalidwe luso si amphamvu, ngakhale 10M anakakamizika Kufala, komanso sangatsimikizire kufala khola mamita 250, ngakhale mamita 150 sangathe kufika.

Choncho, mwachidziwitso, kuti mukwaniritse kufalikira kwa mamita 250, m'pofunika kutengera mapangidwe apamwamba a POE, ndipo chipangizo champhamvu cha POE chimatenga tchipisi chapamwamba kwambiri cha mafakitale.Gawo loyang'anira mphamvu limatha kuzindikira mwanzeru ndikuzindikira IEEE802.3af/at standard, kusintha mphamvu, ndikugwiritsa ntchito ma cores 8 nthawi imodzi.Ukadaulo wanzeru wamagetsi, kuti mukwaniritse ntchitoyi, pogwiritsa ntchito magetsi omangidwa, mwayi wogwiritsa ntchito mphamvu zomanga ndizomwe zimatha kukhathamiritsa kapangidwe kake, kuyeza kuchuluka kwa mphamvu pakumapeto kulandira ndi kufalikira kwa chingwe komanso magawo ena, omwe amawunikidwa ndikuwerengeredwa ndi gawo loyang'anira mphamvu zanzeru ndikutulutsa Langizani gawo lamkati lamagetsi kuti lisinthe mawonekedwe amagetsi ofananirako kuti agwirizane ndi kutulutsa mphamvu zodziwikiratu ku zida zoyendetsedwa ndi mapeto.