1. PoE yosavomerezeka ndi PoE yokhazikika

Kwa muyezo wa PoE womwe umagwirizana ndi IEEE 802.3af/at/bt ndipo uli ndi ndondomeko yogwirana chanza.PoE yosakhala wamba ilibe protocol yogwirana chanza, ndipo imapereka magetsi a 12V, 24V kapena 48V DC okhazikika.

Chosinthira magetsi cha PoE chokhazikika chimakhala ndi chipangizo chowongolera cha PoE mkati, chomwe chimakhala ndi ntchito yozindikira mphamvu isanaperekedwe.Chipangizochi chikalumikizidwa, mphamvu ya PoE imatumiza chizindikiro ku netiweki kuti izindikire ngati cholumikizira mu netiweki ndi chipangizo cha PD chomwe chimathandizira magetsi a PoE.Chogulitsa chomwe sichinali chodziwika bwino cha PoE ndi chida chokakamiza chopangira magetsi pa netiweki, chomwe chimapereka mphamvu chikangoyatsidwa.Palibe njira yodziwira, ndipo imapereka mphamvu mosasamala kanthu kuti terminal ndi chipangizo choyendetsedwa ndi PoE, ndipo ndikosavuta kuwotcha chipangizocho.

2. Njira zozindikiritsa zodziwika bwino za masiwichi a PoE osakhazikika

Ndiye mungasiyanitse bwanji masiwichi a PoE omwe sali okhazikika?Njira zotsatirazi zikhoza kuyesedwa.

a.Onani mphamvu yamagetsi

Choyamba, yang'anani kuchokera kumagetsi amagetsi.IEEE 802.3 af/at/bt protocol ikunena kuti muyezo wa PoE port output voltage range pakati pa 44-57V.Ma voliyumu onse ophatikizika amagetsi kupatula 48V ndi zinthu zomwe sizili wamba, monga zida zodziwika bwino za 12V ndi 24V.Komabe, magetsi a 48V sangakhale chinthu chokhazikika cha PoE, chifukwa chake chida choyezera voteji monga multimeter chimafunika kuti chizindikirike.

b.Yesani ndi multimeter

Yambitsani chipangizocho, sinthani ma multimeter kukhala momwe amayezera voteji, ndikugwirani mapini amagetsi a chipangizo cha PSE ndi zolembera ziwiri za multimeter (nthawi zambiri 1/2, 3/6 kapena 4/5, 7/8 ya RJ45). doko ), ngati chipangizo chokhala ndi mphamvu zokhazikika za 48V kapena ma voteji ena (12V, 24V, etc.) chikuyezedwa, ndi chinthu chosavomerezeka.Chifukwa pochita izi, PSE sichizindikira zida zamagetsi (pano pali multimeter), ndipo imagwiritsa ntchito mwachindunji 48V kapena ma voliyumu ena opangira magetsi.

Mosiyana ndi zimenezi, ngati voteji sangathe kuyeza ndi singano multimeter kulumpha pakati 2 ndi 18V, ndi muyezo PoE.Chifukwa panthawiyi, PSE ikuyesa PD terminal (pano pali multimeter), ndipo multimeter si PD yovomerezeka, PSE sidzapereka mphamvu, ndipo palibe magetsi okhazikika omwe adzapangidwe.

c.Mothandizidwa ndi zida monga zowunikira za PoE

Kuti muthandizire kuyika kwa polojekiti ndi oyang'anira kuti azindikire mwachangu ndikuzindikira mizere ya netiweki ya PoE, kudziwa ngati chizindikiro cha netiweki chili ndi mphamvu ya PoE, ngati PoE ikugwira ntchito moyenera, komanso ngati chipangizocho ndi PoE wamba kapena chinthu chosavomerezeka cha PoE, Utop. wapanga chowunikira cha PoE.

Izi zimathandizira kuzindikira kwapakati (4/5 7/8) ndi kuzindikira kwapakati (1/2 3/6), kumathandizira IEEE802.3 af/pa PoE wamba ndi PoE yosagwirizana;Probe PoE mawonekedwe kapena chingwe.Ingolumikizani chowunikira cha PoE ku netiweki yogwira, ndipo LED yomwe ili pa chowunikira cha PoE idzawunikira kapena kuthwanima.Kuphethira kumatanthauza PoE wamba, kuwala kosasunthika kumatanthauza PoE yosakhazikika.Chida chodziwira chaching'ono chingapereke mwayi womanga uinjiniya.