1. I-PoE engajwayelekile kanye ne-PoE evamile

Okwe-PoE ejwayelekile ethobelana namazinga e-IEEE 802.3af/at/bt futhi enephrothokholi yokuxhawula.I-PoE engajwayelekile ayinayo iphrothokholi yokuxhawula, futhi inikeza ugesi ongu-12V, 24V noma ongu-48V DC ogxilile.

Iswishi evamile ye-PoE ine-chip yokulawula ye-PoE ngaphakathi, enomsebenzi wokuthola ngaphambi kokunikezwa kwamandla.Lapho idivayisi ixhunyiwe, ukunikezwa kwamandla kwe-PoE kuzothumela isignali kunethiwekhi ukuze kutholwe ukuthi ingabe itheminali kunethiwekhi iyidivayisi ye-PD esekela ukunikezwa kwamandla kwe-PoE.Umkhiqizo we-PoE ongajwayelekile uyidivayisi yokuphakela amandla ekhebula lenethiwekhi ephoqelelwe, enikeza amandla ngokushesha nje lapho ivuliwe.Asikho isinyathelo sokutholwa, futhi inikeza amandla kungakhathalekile ukuthi itheminali iyithuluzi elisebenza nge-PoE, futhi kulula kakhulu ukushisa idivayisi yokufinyelela.

2. Izindlela zokuhlonza ezijwayelekile zokushintshwa kwe-PoE okungajwayelekile

Ngakho-ke ungahlukanisa kanjani ukushintshwa kwe-PoE okungajwayelekile?Izindlela ezilandelayo zingazanywa.

a.Hlola i-voltage

Okokuqala, cabanga nge-voltage yokuhlinzeka.Iphrothokholi ye-IEEE 802.3 af/at/bt ibeka ukuthi ububanzi be-voltage yembobo ye-PoE evamile buphakathi kuka-44-57V.Wonke amandla kagesi ajwayelekile ngaphandle kuka-48V ayimikhiqizo engeyona eyejwayelekile, njengemikhiqizo evamile yokuphakelwa kukagesi engu-12V no-24V.Kodwa-ke, ukunikezwa kwamandla we-48V kungenzeka kungabi umkhiqizo ojwayelekile we-PoE, ngakho-ke ithuluzi lokulinganisa i-voltage elifana ne-multimeter liyadingeka ukuze liwuhlonze.

b.Linganisa nge-multimeter

Qala idivayisi, lungisa i-multimeter ibe indawo yokukala i-voltage, bese uthinta izikhonkwane zokuphakela amandla zedivayisi ye-PSE ngamapeni amabili e-multimeter (imvamisa i-1/2, 3/6 noma 4/5, 7/8 ye-RJ45 port ), uma idivayisi enokukhishwa okuzinzile kwe-48V noma amanye amanani kagesi (12V, 24V, njll.) ikalwa, iwumkhiqizo ongajwayelekile.Ngoba kule nqubo, i-PSE ayiziboni izinto ezisetshenziswa amandla (nansi i-multimeter), futhi isebenzisa ngokuqondile i-48V noma amanye amanani kagesi ukuze kutholakale amandla.

Ngakolunye uhlangothi, uma i-voltage ingenakulinganiswa futhi inaliti ye-multimeter igxuma phakathi kuka-2 no-18V, i-PoE evamile.Ngoba kulesi sigaba, i-PSE ihlola ukuphela kwe-PD (nansi i-multimeter), futhi i-multimeter ayiyona i-PD esemthethweni, i-PSE ngeke inikeze amandla, futhi akukho voltage ezinzile ezokhiqizwa.

c.Ngosizo lwamathuluzi anjenge-PoE detectors

Ukuze kube lula ukufakwa kwephrojekthi kanye nabasebenzi bokuphatha ukuze bakhombe ngokushesha futhi babone imigqa yenethiwekhi ye-PoE, thola ukuthi isignali yenethiwekhi inawo yini amandla e-PoE, noma ngabe i-PoE isebenza ngokujwayelekile, nokuthi ingabe idivayisi iwumkhiqizo we-PoE ojwayelekile noma ongajwayelekile, i-Utop usungule umtshina we-PoE.

Lo mkhiqizo usekela ukutholwa kwe-span emaphakathi (4/5 7/8) kanye nokutholwa kwe-span-span (1/2 3/6), isekela i-IEEE802.3 af/ku-PoE ejwayelekile kanye ne-PoE engajwayelekile;I-Probe PoE interface noma ikhebula.Vele uxhume umtshina we-PoE kunethiwekhi esebenzayo, futhi i-LED etholakala kumtshina we-PoE izokhanya noma icwayize.Ukucwayiza kusho i-PoE ejwayelekile, ukukhanya okuqinile kusho i-PoE engajwayelekile.Ithuluzi elincane lokubona linganikeza lula ukwakhiwa kobunjiniyela.