Ndikukula kwachangu kwa matelefoni a IP, ma AP opanda zingwe a LAN, komanso kuwunika kwa maukonde m'zaka zaposachedwa, luso laukadaulo likukulirakulirakulira, ndipo chithandizo chaukadaulo choperekedwa ndi opanga chikuchulukirachulukira komanso mwadongosolo.Pakati pa kusinthana kwaukadaulo, pakati pazovuta kwambiri ndi makampani opanga uinjiniya ndi vuto lamagetsi a POE.
Funso 1: Kodi ukadaulo wa PoE ndi chiyani?
PoE (Power Over Ethernet) imatanthawuza zowonongeka za Ethernet Cat.5 cabling zomwe zilipo popanda kusintha kulikonse, kwa ma terminals ena a IP (monga mafoni a IP, opanda waya LAN access point AP, network cameras Etc.) Ngakhale kutumiza deta, ikhozanso perekani ukadaulo wamagetsi wa DC pazida zotere.Ukadaulo wa PoE utha kuwonetsetsa chitetezo cha ma cabling omwe alipo pomwe akuwonetsetsa kuti maukonde omwe alipo akuyenda bwino, ndikuchepetsa kwambiri ndalama.
Dongosolo lathunthu la PoE limaphatikizapo magawo awiri: zida zamagetsi (PSE, Power Sourcing Equipment) ndi zida zolandirira mphamvu (PD, Powered Chipangizo).
Zida Zopangira Mphamvu (PSE): Ma switch a Ethernet, ma router, ma hubs, kapena zida zina zosinthira maukonde zomwe zimathandizira POE
Chipangizo cholandirira mphamvu (PD): Pulojekiti yowunikira opanda zingwe imakhala makamaka opanda zingwe AP.
Funso 2: Kodi magetsi a PoE ndi okhazikika?
Kuchokera pamalingaliro aukadaulo, ukadaulo wa PoE wakula zaka zambiri ndipo tsopano uli pamlingo wokhwima kwambiri.Komabe, chifukwa cha kukwera mtengo kwa msika wowunikira, mtundu wa masiwichi a PoE kapena zingwe zogwiritsidwa ntchito ndizotsika kwambiri, kapena kapangidwe kake kamene kamakhala kopanda nzeru, zomwe zimapangitsa kuti ntchito yolemetsa yolemetsa igwire ntchito pogwiritsa ntchito magetsi a PoE.Mawonedwe okhazikika.
Pankhani yotumiza deta yayikulu kwambiri, mphamvu yayikulu, komanso kufunikira kwa 24/7 ntchito yosasokoneza, kugwiritsa ntchito zida zotsimikizika za PoE ndi mawaya ndi chitsimikizo cha kukhazikika kwa dongosolo lonse.
Funso 3: Ubwino wa njira zoperekera mphamvu za PoE ndi zotani?
1. Kuchepetsa mawaya ndikusunga ndalama zogwirira ntchito
Chingwe cha netiweki chimatumiza deta ndi mphamvu nthawi imodzi.PoE imathetsa kufunikira kwa magetsi okwera mtengo komanso nthawi yomwe imatengera kukhazikitsa magetsi, kupulumutsa ndalama ndi nthawi.
2. Zotetezeka komanso zosavuta
Zida zamagetsi za PoE zidzangopereka mphamvu ku zipangizo zomwe ziyenera kuyendetsedwa.Pokhapokha pamene zida zomwe zimayenera kuyendetsedwa zilumikizidwa, padzakhala voteji pa chingwe cha Ethernet, motero kuthetsa chiopsezo cha kutayikira pamzere.Ogwiritsa ntchito amatha kusakaniza zida zoyambira ndi zida za PoE pamanetiweki, ndipo zida izi zitha kukhala limodzi ndi zingwe za Ethernet zomwe zilipo.
3. Kuwongolera kayendetsedwe kakutali
Monga kutumiza kwa data, PoE imatha kuyang'anira ndikuwongolera chipangizocho pogwiritsa ntchito Simple Network Management Protocol (SNMP).Ntchitoyi imatha kupereka ntchito monga kutseka kwausiku ndikuyambiranso kutali.
Funso 4: Kodi zowopsa kapena zoyipa zaukadaulo wamagetsi wa PoE pazauinjiniya ndi zotani?
1. Mphamvu zosakwanira, mapeto olandila mphamvu sangathe kuyendetsedwa: 802.3af standard (PoE) yotulutsa mphamvu ndi 15.4W.Kwa zida zamphamvu zakutsogolo, mphamvu zotulutsa sizingakwaniritse zofunikira.
2. Chiwopsezo chimakhala chokhazikika: Nthawi zambiri, kusintha kwa PoE kudzapereka mphamvu ku ma AP angapo nthawi imodzi.Kulephera kulikonse kwa gawo lamagetsi la POE la chosinthira kumapangitsa kuti zida zonse zisagwire ntchito, ndipo chiwopsezocho chimakhala chokhazikika.
3. Zida zapamwamba ndi zogulira ndalama: Poyerekeza ndi njira zina zoperekera magetsi, teknoloji ya PoE yowonjezera idzawonjezera ntchito yokonza pambuyo pa malonda.M'lingaliro la chitetezo ndi kukhazikika, kukhazikika ndi chitetezo cha magetsi osiyana ndi abwino kwambiri.
Funso 5: Momwe mungasankhire chosinthira cha PoE?
1. Ndi mphamvu zingati zomwe zimafunikira kuti zigwiritse ntchito zida: Kusintha kwa PoE kumagwiritsa ntchito miyezo yosiyanasiyana, ndipo mphamvu yotulutsa idzakhala yosiyana, mwachitsanzo: IEEE802.3af sichidutsa 15.4W, chifukwa cha kutayika kwa mawaya opatsirana, akhoza kupereka zipangizo ndi kugwiritsa ntchito mphamvu kosapitilira 12.95W mothandizidwa ndi.Masiwichi a PoE omwe amatsatira muyezo wa IEEE802.3at amatha kupereka mphamvu ku zida zogwiritsa ntchito mphamvu zosapitirira 25W.
2. Ndi zipangizo zingati zomwe zingagwiritsidwe ntchito: Chizindikiro chofunika kwambiri cha kusintha kwa PoE ndi mphamvu yonse ya mphamvu ya PoE.Pansi pa muyezo wa IEEE802.3af, ngati mphamvu yonse ya PoE ya 24-port PoE switch ifika ku 370W, ndiye imatha kupereka madoko 24 (370 / 15.4 = 24), koma ngati ili ndi doko limodzi molingana ndi IEEE802. .3 pa muyezo Mphamvu imawerengedwa pa 30W, ndipo nthawi yomweyo, imatha kupereka mphamvu kumadoko 12 kwambiri (370/30 = 12).
3. Pamafunika chiwerengero cha zolumikizira, kaya kubweretsa CHIKWANGWANI doko, ndi kapena popanda maukonde kasamalidwe, liwiro (10/100 / 1000M).
Funso 6: Kutalikira kotetezedwa kwa magetsi a PoE?Kodi pali malingaliro otani pakusankha zingwe za netiweki?
Mtunda wotetezedwa wamagetsi a POE ndi 100 metres.Ndibwino kugwiritsa ntchito mitundu yonse isanu ya zingwe zamkuwa.
Chingwe chamagetsi cha POE chimafuna kuti vutoli likhale vuto m'mayiko monga China ndi mayiko ena kumene katundu wabodza ndi katundu wotchipa ali ponseponse.Sivuto m’maiko ambiri otukuka.Muyezo wa POE IEEE 802.3af umafuna kuti mphamvu yotulutsa PSE ndi 15.4W kapena 15.5W.Chipangizo cha PD cholandira mphamvu pambuyo potumiza mamita 100 chiyenera kukhala chosachepera 12.95W.Malinga ndi 802.3af momwe mtengo wapano wa 350ma, kukana kwa chingwe cha netiweki cha mita 100 kuyenera kukhala (15.4-12.95W) / 350ma = 7 ohms kapena (15.5-12.95) / 350ma = 7.29 ohms.
Chingwe chokhazikika cha netiweki chimakwaniritsa izi.Muyezo wamagetsi wa IEEE 802.3af poe umayezedwa ndi chingwe chokhazikika cha netiweki.Chifukwa chomwe POE magetsi opangira ma netiweki amafunikira ndi chifukwa zingwe zambiri zama netiweki pamsika ndi zingwe zosagwirizana ndi ma netiweki, zomwe sizimapangidwa motsatira zofunikira za zingwe zapaintaneti.Zida za zingwe zapaintaneti zomwe sizinali zokhazikika pamsika zimaphatikizanso zitsulo zovala zamkuwa, aluminiyamu yamkuwa, ndi chitsulo chamkuwa.Zingwe zama netiweki izi zimakhala ndi zotsutsana zazikulu ndipo sizoyenera kuphatikizira magetsi a POE.Mphamvu ya POE iyenera kugwiritsa ntchito chingwe cha netiweki chamkuwa wopanda okosijeni, ndiye kuti, chingwe chokhazikika cha netiweki.