M'munda wowunikira chitetezo, zida zambiri zapaintaneti zomwe zikugwiritsidwa ntchito pano zimathandizira magetsi a PoE. Pakumanga kuwunika kwa maukonde, kuti muchepetse mtengo wama waya ndikupangitsa kuti zikhale zosavuta komanso mwachangu, makampani ambiri opanga uinjiniya aziganizira kugwiritsa ntchito magetsi a PoE, ndiye kuti, kugwiritsa ntchito ma switch a PoE kumakamera owunikira mphamvu. Ndiye, ndi zida zingati zomwe PoE mafakitale angagwiritse ntchito magetsi?

1. PoE switch yamagetsi muyezo

Kuti muwone kuti ndi makamera angati omwe angagwiritsidwe ntchito ndi kusintha kwa PoE panthawi imodzimodziyo, mbali ziwiri ziyenera kuganiziridwa: mlingo wamagetsi a PoE switch ndi mphamvu zonse za PoE switch. Mphamvu yamagetsi ya PoE imatha kumveka ngati mphamvu ya doko limodzi losinthira PoE. Pali miyezo iwiri yosinthira PoE yomwe ili yotchuka pamsika, IEEE802.3af ndi IEEE802.3at. Muyezo wa IEEE802.3af umatanthawuza mphamvu yamagetsi ya 15.4W, ndipo muyezo wa IEEE802.3at umatanthawuza mphamvu yamagetsi mpaka 30W. Chifukwa cha mitundu yosiyanasiyana yamagetsi, magetsi amtundu umodzi amasiyananso. Mwachitsanzo, mphamvu ya kamera ndi 9W, ndipo af standard PoE switch ingagwiritsidwe ntchito; Ngati mphamvu ya kamera ndi 20W, muyenera kugwiritsa ntchito af standard PoE switch; ngati mphamvu ya kamera ndi yoposa 30W, muyenera kugwiritsa ntchito gawo lodzipereka la PoE kuti mupereke mphamvu.

Nthawi zambiri, chosinthira cha PoE chomwe chimathandizira af komanso pamagetsi amagetsi chimakhala ndi magetsi odzisinthira okha. Mwachitsanzo, ngati ilumikizidwa ndi chipangizo cha 5W, imapereka mphamvu ya 5W; ngati chikugwirizana ndi 20W chipangizo, ndiye amapereka 20W mphamvu.

2. Mphamvu zonse za mafakitale a PoE switches

Mphamvu yonse ya kusintha kwa mafakitale a PoE ndi chizindikiro chofunikira kwambiri, chokhudzana mwachindunji ndi makamera angati omwe angabweretsedwe. Kutenga 24-port PoE switch ndi mphamvu ya 400W, mphamvu yonse ya PoE switch ndi pafupifupi 370W mutachotsa kutayika.

Pansi pa muyezo wa IEEE802.3af, imatha kupereka madoko 24 (370 / 15.4 = 24), ndiko kuti, imatha kupereka mphamvu ku makamera 24 nthawi imodzi, ndiko kuti, mphamvu zonse. Koma ngati iwerengedwa molingana ndi IEEE802.3at muyezo wa doko limodzi lalikulu lamagetsi a 30W, nthawi yomweyo, imatha kupereka mphamvu kumadoko 12 kwambiri (370/30=12).

Kugwiritsa ntchito kwenikweni, kugwiritsa ntchito mphamvu kwambiri pamakamera ambiri wamba ndikotsika, kwenikweni sikudutsa 15W. Ngati doko lililonse la PoE likusunga mphamvu molingana ndi mphamvu yayikulu (mwachitsanzo, 30W) pakadali pano, madoko ena adzagwiritsa ntchito mphamvu ya PoE. Zosatha, koma madoko ena sangathe kugawa mphamvu. Mwachitsanzo, ma switch ena a PoE amathandizira kugawa mphamvu kwamphamvu, zomwe zingapewe izi. Pogula chosinthira cha PoE, zimatengera ngati chosinthiracho chimathandizira kugawika kwamphamvu kwamphamvu, kotero kuti doko lililonse limangogawira mphamvu zomwe zimagwiritsidwa ntchito, kuti mphamvu yamagetsi ya PoE igwiritsidwe ntchito bwino.

3. Kugawana zomwe mwakumana nazo pogwiritsa ntchito ma switch a PoE mafakitale

a. Kugwiritsa ntchito masiwichi omwe amathandizira kugawa mphamvu kwamphamvu kumatha kukulitsa luso lamagetsi;
b. Choyamba mvetsetsani kuchuluka kwamphamvu kwa chipangizo chomwe chili ndi mphamvu, ndiyeno gawani mphamvu zonse zosinthira PoE ndi kugwiritsa ntchito mphamvu zambiri kuti mupeze zida zingati zomwe switch ya PoE ingapereke.