POE kusintha ukadaulo ndi zoyambitsa zabwino

TheKusintha kwa PoEndi akusinthayomwe imathandizira magetsi ku chingwe cha netiweki. Poyerekeza ndi wambakusintha, malo olandirira mphamvu (monga AP, kamera ya digito, ndi zina zotero) sichiyenera kulumikizidwa ndi magetsi, ndipo kudalirika kwa netiweki yonse ndikwapamwamba.
Kusiyana pakati pa ma switch a PoE ndi masiwichi wamba
PoEkusinthandi wosiyana ndi wambakusintha, Kusintha kwa PoEsangangopereka ntchito yopatsira wambakusintha, komanso perekani ntchito yoperekera mphamvu kumapeto kwina kwa chingwe cha netiweki. Mwachitsanzo, pali kamera yowonera digito (imafuna magetsi kuti igwire ntchito moyenera), koma siyimalumikizidwa ndi magetsi, koma yolumikizidwa ndi wamba.kusinthakudzera pa netiweki chingwe. Pankhaniyi, kamera sikugwira ntchito. Ngati kamera si chikugwirizana ndi magetsi, koma kufala maukonde chingwe chikugwirizana ndiPoE kusintha, kamera ikhoza kugwira ntchito bwino.
PoE imagawidwa kukhala yokhazikika komanso yopanda muyezo. Wokhazikika awona ngati zida zolumikizidwa ndi netiweki zili ndi poE polandila mphamvu. Ngati ilipo, idzayendetsedwa, ngati sichoncho, sichidzagwiritsidwa ntchito ndikungopereka kutumiza deta. Zomwe sizili zoyenera zidzaperekedwa mwachindunji ndi mphamvu. Ngati ulalowu sunapezeke, zida zitha kutenthedwa.
POEkusinthaluso ndi ubwino
Pali miyezo iwiri ya masiwichi akuluakulu a PoE pamsika, IEEE802.3af ndi 802.3at, omwe amatanthauzira mphamvu yamagetsi ya 15.4W ndi 30W, koma chifukwa cha kutayika kwa njira yotumizira, magetsi enieni ndi 12.95W. ndi 25.5W, voliyumu yake ndi DC 48v.
Pogwiritsa ntchito aKusintha kwa PoEyomwe imathandizira muyezo wa IEEE802.3af, mphamvu ya chipangizo choyendetsedwa ndi mphamvu sichingadutse 12.95W; momwemonso, mukamagwiritsa ntchito PoEkusinthaya IEEE802.3at muyezo, mphamvu ya chipangizo choyendetsedwa ndi mphamvu sichingadutse 25.5W.
Kawirikawiri, PoEkusinthayomwe imathandizira IEEE802.3af/at standard pa nthawi yomweyo, magetsi amatha kusintha. Mwachitsanzo, ngati ilumikizidwa ndi chipangizo cha 5W, imapereka mphamvu ya 5W; ngati chikugwirizana ndi 20W chipangizo, ndiye amapereka 20W mphamvu.
Ma switch a PoE ndi masiwichi omwe amathandizira magetsi ku zingwe za netiweki. Poyerekeza ndi masiwichi wamba, ma terminals (monga ma APs, makamera a digito, ndi zina zambiri) safunikira kukhala ndi mawaya kuti apereke magetsi, ndipo ndi odalirika pa intaneti yonse. The PoEkusinthasangangopereka ntchito yopatsirana yawambakusintha, komanso perekani ntchito yoperekera mphamvu kumapeto kwa chingwe cha netiweki.
Chipangizo chakumbuyo cha PoE chimangofunika chingwe chimodzi cha netiweki, chomwe chimasunga malo ndipo chimatha kusunthidwa mwakufuna (chosavuta komanso chosavuta), kupulumutsa ndalama.
Mpaka PoEkusinthayolumikizidwa ndi UPS, imatha kupereka mphamvu ku zida zonse zakumbuyo za POE pomwe mphamvu yazimitsa. 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.