Kusintha kwa PoE ndi chosinthira chomwe chimathandizira magetsi ku chingwe cha netiweki. Poyerekeza ndi masiwichi wamba, malo olandirira mphamvu (monga AP, kamera ya digito, ndi zina zambiri) safunikira kulumikizidwa ndi mawaya, omwe ndi odalirika pa network yonse.Today,JHA Technologyifotokoza zaukadaulo ndi zabwino za ma switch a POE mwatsatanetsatane apa.

Kusiyana pakati pa ma switch a PoE ndi ma switch wamba

Kusintha kwa PoE sikungangopereka ntchito yotumizira yosinthira wamba, komanso imaperekanso ntchito yamagetsi kumalekezero ena a chingwe cha netiweki. Mwachitsanzo, pali kamera yowunikira digito (yomwe imafuna mphamvu kuti igwire ntchito moyenera), koma sichimalumikizidwa ndi gwero lamagetsi, koma yolumikizidwa ndi chosinthira wamba kudzera pa chingwe cha netiweki. Pankhaniyi, kamera sikugwira ntchito. Ngati kamera sichikulumikizidwa ndi magetsi, koma chingwe chake chotumizira ma netiweki chimalumikizidwa ndi switch ya PoE, kamera imatha kugwira ntchito bwino.

PoE imagawidwa kukhala yokhazikika komanso yopanda muyezo. Wokhazikika awona ngati chida cholumikizidwa cha netiweki chili ndi poE polandila mphamvu. Ngati ilipo, idzayendetsedwa, ngati sichoncho, sichidzagwiritsidwa ntchito ndikungopereka kutumiza deta. Ngati sizili zoyenera, zidzapereka mphamvu mwachindunji. Ngati ulalowu sunapezeke, zida zitha kutenthedwa.

POE kusintha luso ndi ubwino

Pali miyezo iwiri ya masiwichi amtundu wa PoE pamsika, IEEE802.3af ndi 802.3 pa, yomwe imatanthauzira mphamvu yamagetsi ya 15.4W ndi 30W, koma chifukwa cha kutayika kwa njira yotumizira, magetsi enieni ndi 12.95W ndi 25.5W, voliyumu yovotera Ndi DC 48v. Mukamagwiritsa ntchito kusintha kwa PoE komwe kumathandizira muyezo wa IEEE802.3af, mphamvu ya chipangizo chamagetsi sichikhoza kupitirira 12.95W; mofananamo, pogwiritsa ntchito kusintha kwa PoE kwa muyezo wa IEEE802.3at, mphamvu ya chipangizo chamagetsi sichikhoza kupitirira 25.5W.

Nthawi zambiri, chosinthira cha PoE chomwe chimathandizira IEEE802.3af/panthawi yomweyo, magetsi amatha kusintha. Mwachitsanzo, ngati ilumikizidwa ndi chipangizo cha 5W, imapereka mphamvu ya 5W; ngati ikugwirizana ndi chipangizo cha 20W, imapereka mphamvu ya 20W. Kusintha kwa PoE ndi kusintha komwe kumathandizira magetsi ku chingwe cha intaneti. Poyerekeza ndi masiwichi wamba, ma terminals (monga ma APs, makamera a digito, ndi zina zambiri) safunikira kukhala ndi ma waya kuti apereke magetsi, omwe ndi odalirika pa intaneti yonse. Kusintha kwa PoE sikungangopereka ntchito yotumizira yosinthira wamba, komanso imaperekanso ntchito yamagetsi kumalekezero ena a chingwe cha netiweki. Chipangizo chakumbuyo cha PoE chimangofunika chingwe chimodzi cha netiweki, chomwe chimasunga malo, chingasunthidwe mwakufuna (chosavuta komanso chosavuta), ndikusunga ndalama.

Malingana ngati kusintha kwa PoE kulumikizidwa ku UPS, kumatha kupereka mphamvu kuzipangizo zonse zakumbuyo za POE pamene mphamvu yazimitsidwa. Ogwiritsa ntchito amatha kusakaniza ndi kusakaniza zida zoyambirira ndi zida za PoE pamanetiweki, ndipo zida izi zitha kukhala limodzi ndi zingwe za Ethernet zomwe zilipo.