Abanye abathengi babuze, kukho utshintsho lwe-POE kwimarike abathi bayakwazi ukuhambisa i-150 yeemitha okanye iimitha ezingama-250, ngaba yinyani okanye bubuxoki?

Okokuqala, kufuneka siqonde ukuba yintoni i-POE.I-POE sisishunqulelo se-Power over Ethernet, oku kuthetha ukuba ngaphandle kotshintsho kwi-Ethernet Cat.5 i-cabling infrastructure ekhoyo, ingasetyenziselwa ezinye ii-terminals ezisekelwe kwi-IP (ezifana neefowuni ze-IP).Ithekhnoloji enokubonelela ngamandla e-DC kwizixhobo ezinjalo ngelixa idlulisela imiqondiso yedatha, njengeendawo zokufikelela kwi-LAN engenazingcingo, ii-APs, kunye neekhamera zenethiwekhi, yinto yokutshintsha exhasa amandla phezu kwe-Ethernet.

Umgangatho we-Ethernet uchaza ukuba umgama ophezulu wokudlulisa umgama weemitha ezili-100, kwaye ukulibaziseka kwedatha kunye nokulahleka kwepakethi kunokwenzeka ukuba umgama udlula i-100 yeemitha.
Kodwa ayizizo zonke iintambo zenethiwekhi zikhawulelwe kwiimitha ezili-100.Ekusebenzeni okwenyani, intambo yenethiwekhi inokuhambisa ngokufanelekileyo ngaphezu kweemitha ezili-100, kwaye umgangatho unokufikelela malunga neemitha ezili-120, oko kukuthi, i-oxygen-free copper Cat.5 intambo yenethiwekhi, okanye i-cable ye-network network 6.

Uninzi lwabavelisi be-PoE ngoku baqalisa i-150-metres, umgama omde, unikezelo lwamandla lweemitha ezingama-250, kunye nokuhanjiswa komgama we-POE yeemitha ezingama-500.Ngaba oko akuthethi ukuba umgama wothumelo lwe-POE yokutshintsha okusemgangathweni yi-100 yeemitha, kwaye kungcono ukulawula umgama phakathi kweemitha ezingama-80 ekusetyenzisweni ngokwenene.Yintoni ingxaki?

Sonke siyazi ukuba umgama wonikezelo lwamandla we-PoE umiselwa ngumgama wothumelo lwesignali yedatha.Umbane ococekileyo unokuhanjiswa kude kakhulu, kodwa umgama wothumelo lwedatha yedatha umiselwa yintambo yenethiwekhi.Umgama wothumelo wodidi oluqhelekileyo lwe-5 uphawu lwedatha yentambo malunga ne-100 yeemitha.Ukuze kuqinisekiswe umgangatho wokwakha, ngokuqhelekileyo i-80-90 yeemitha.Nceda uqaphele ukuba umgama wothumelo apha ubhekiselele kwizinga eliphezulu, njenge-100M.
Abavelisi abaninzi baye baphawula ukuba umgama wokuhanjiswa kwee-POE zabo zokutshintsha unokufikelela kwiimitha ezili-150, kodwa kwizicelo zangempela, ukuba utshintsho lwe-POE oluqhelekileyo lufuna ukufezekisa umgama wokuhanjiswa kweemitha ezili-150, zineemfuno eziqinileyo kumgangatho wentambo yenethiwekhi.Kufuneka basebenzise ngaphezu kweentambo ze-6, eziye zanda Nangona kunjalo, ukuba isiphaluka sangaphakathi sokutshintsha kwe-POE sithatha i-chip ye-network eqhelekileyo kakhulu kunye ne-POE yolawulo lwe-chip, akunakwenzeka ukufikelela kuthungelwano lwe-100M kunye nomgama wokuhambisa. yeemitha ezili-150, nokuba intambo yenethiwekhi ekumgangatho ophezulu isetyenziswa.Kuya kwandisa ukusetyenziswa kwamandla, kugqithise ukusetyenziswa kwamandla ombane we-PoE, kwaye kungazinzi kakhulu, kunye nokuhla kweepakethi ezinzulu, i-bandwidth enzima yokuhambisa kunye nokunciphisa umqondiso, okubangelwa ukungazinzi kwesignali, ukuguga kwezixhobo zokutshintsha ze-PoE, kunye nobunzima ekugcinweni okulandelayo. .

Nokuba ukutshintshwa kwe-POE ephezulu kunye nomthwalo ogcweleyo we-100M kunye nokuhanjiswa okuzinzile kunokufikelela kuphela kwiimitha ezili-150.Uthini umgama wothumelo weemitha ezingama-250?Enyanisweni, kukho iindlela.Ukuba izinga liyancipha ukuya kwi-10M, oko kukuthi, i-bandwidth yokudlulisa i-10M, umgama wokuhambisa ulungile.Ukwandisa kwiimitha ezingama-250 (kuxhomekeke kumgangatho wentambo yenethiwekhi), le teknoloji ayiboneleli nge-bandwidth ephezulu.I-bandwidth ixinzelelwe ukusuka kwi-100M ukuya kwi-10M, engafanelekanga ukuhanjiswa ngokukhawuleza kwemifanekiso yokubeka iliso ephezulu.
Abavelisi abaninzi, ngelixa bekhuthaza iimveliso zabo ukuxhasa ukuhanjiswa kweemitha ezingama-250, musa ukukhankanya ukuhla kwi-bandwidth ye-10M, kwaye barhanelwa ngokufihla ngamabomu i-bandwidth kubathengi.

Ngaphezu koko, ayizizo zonke iiswitshi ze-POE ezinokuhambisa ngokulula i-250 yeemitha ukuba nje i-bandwidth iyancipha ukuya kwi-10M.Oku kukwaxhomekeke kumgangatho wokutshintsha.Ukuba ukuguquguquka kwetshiphu yangaphakathi yokutshintsha kubi kakhulu kwaye amandla olawulo lwetshiphu anamandla, nokuba i-10M iyanyanzeliswa Ukuhanjiswa, nayo ayinakuqinisekisa ukuhanjiswa okuzinzileyo kweemitha ezingama-250, nokuba i-150 yeemitha ayinakufikelela.

Ngoko ke, kwithiyori, ukufezekisa ukuhanjiswa kweemitha ezingama-250, kuyimfuneko ukwamkela uyilo oluphezulu lwamandla e-POE, kwaye i-chip yamandla ye-POE ithatha ii-chips ezikumgangatho ophezulu we-industrial-grade.Imodyuli yolawulo lwamandla inokuqonda kwaye iqaphele ngokuzenzekelayo i-IEEE802.3af / kumgangatho, ukulungelelanisa ngokuzenzekelayo amandla, kwaye usebenzise ii-cores ezi-8 ngexesha elifanayo.Ubuchwephesha bonikezelo lwamandla obukrelekrele, ukufezekisa umsebenzi onjalo, usebenzisa unikezelo lwamandla olwakhelwe ngaphakathi, inzuzo yokusebenzisa unikezelo lwamandla olwakhelwe ngaphakathi kukuba lunokwandisa uyilo oluthile, lulinganise ngokuzenzekelayo imfuno yamandla esiphelo sokufumana kunye nokuphazamiseka kokudluliselwa kwentambo kwaye ezinye iiparameters, ezihlalutywayo kwaye zibalwe yimodyuli yolawulo lwamandla obukrelekrele kwaye ikhutshwe Yalela isiphaluka sonikezelo lwamandla lwangaphakathi ukulungelelanisa igalelo lombane lomgca ukuze litshatise imveliso yamandla ezenzekelayo kwisixhobo esinamandla okuphela.