Mu rwego rwo gukurikirana umutekano, ibikoresho byinshi byurusobe muri iki gihe bikoresha inkunga ya PoE itanga amashanyarazi. Mu iyubakwa ry’urusobe rwubaka, kugirango hagabanuke ibiciro byinsinga kandi birusheho koroha kandi byihuse, ibigo byinshi byubwubatsi bizatekereza gukoresha amashanyarazi ya PoE, ni ukuvuga gukoresha PoE ihinduranya kamera yo kugenzura amashanyarazi. None, ibikoresho bingahe bishobora guhinduranya ingufu za PoE inganda?

1. PoE ihindura amashanyarazi asanzwe

Kugirango ubone kamera zingahe zishobora gukoreshwa na PoE icyarimwe icyarimwe, hagomba gusuzumwa ibintu bibiri: igipimo cyogutanga amashanyarazi ya PoE hamwe namashanyarazi yose ya PoE. Amashanyarazi yatanzwe na PoE arashobora kumvikana nkumuyoboro umwe wamashanyarazi ya PoE. Hariho amahame abiri kuri PoE yahinduwe ikunzwe kumasoko, IEEE802.3af na IEEE802.3at. Igipimo cya IEEE802.3af gisobanura amashanyarazi ya 15.4W, naho igipimo cya IEEE802.3at gisobanura amashanyarazi agera kuri 30W. Bitewe nuburyo butandukanye bwo gutanga amashanyarazi, amashanyarazi yicyambu kimwe nayo aratandukanye. Kurugero, imbaraga za kamera ni 9W, kandi af isanzwe ya PoE irashobora gukoreshwa; Niba imbaraga za kamera ari 20W, ugomba gukoresha af ya PoE isanzwe; niba ingufu za kamera zirenze 30W, ugomba gukoresha module yihariye yo gutanga amashanyarazi kugirango utange amashanyarazi.

Muri rusange, PoE switch ishigikira af ndetse no mubipimo bitanga amashanyarazi bifite amashanyarazi yihariye. Kurugero, niba ihujwe nigikoresho cya 5W, itanga 5W yingufu; niba ihujwe nigikoresho cya 20W, noneho itanga 20W yingufu.

2. Imbaraga zose zinganda za PoE zihindura

Imbaraga zose zahinduwe ninganda PoE ningirakamaro cyane, bifitanye isano itaziguye na kamera zishobora kuzanwa. Ufashe icyambu cya 24 cya PoE gifite amashanyarazi ya 400W, ingufu zose za PoE ni 370W nyuma yo gukuraho igihombo.

Ukurikije ibipimo bya IEEE802.3af, irashobora gutanga ibyambu 24 (370 / 15.4 = 24), ni ukuvuga ko ishobora gutanga amashanyarazi kuri kamera 24 icyarimwe, ni ukuvuga amashanyarazi yuzuye. Ariko niba ibarwa ukurikije igipimo cya IEEE802.3at kugirango icyambu kimwe gitange amashanyarazi ntarengwa ya 30W, icyarimwe, irashobora gutanga amashanyarazi gusa ku byambu 12 kuri byinshi (370/30 = 12).

Mu mikoreshereze nyayo, gukoresha ingufu nyinshi za webcams nyinshi zisanzwe ni nkeya, mubyukuri ntibirenza 15W. Niba buri cyambu cya PoE kibitse imbaraga ukurikije imbaraga ntarengwa (urugero, 30W) muriki gihe, ibyambu bimwe bizakoresha ingufu za PoE. Iherezo, ariko ibyambu bimwe ntibishobora gukwirakwiza imbaraga. Kurugero, bamwe bahindura PoE bashyigikira imbaraga zo kugabura imbaraga, zishobora kwirinda iki kibazo. Iyo uguze icyuma cya PoE, biterwa nuko switch ishigikira imbaraga zingufu zitangwa, kuburyo buri cyambu gitanga gusa ingufu zikoreshwa mubyukuri, kugirango amashanyarazi ya PoE ashobore gukoreshwa neza.

3. Kugabana uburambe bwo gukoresha PoE yinganda

a. Gukoresha sisitemu ishigikira imbaraga zo gukwirakwiza imbaraga zirashobora kongera ingufu zitanga amashanyarazi;
b. Banza usobanukirwe nimbaraga nini zikoreshwa nigikoresho gikoreshwa, hanyuma ugabanye amashanyarazi yose yumuriro wa PoE ukoresheje ingufu nyinshi kugirango ubone ibikoresho byinshi PoE ishobora gutanga.