Yintoni PoE-adaptha. Power phezu kwe-

We uhlobo intambo mihla IT-specialist "isibini ezijijekileyo", apho iiPC inokuba networked, ifihlakeleyo ithuba emangalisayo. Inyaniso kukuba kuwo enokusasazwa nje kuphela umsinga data lwedijithali, kodwa ngamandla. PoE-adaptha - kule isixhobo olongezelelweyo kufuneka zisetyenziswe. Nangona kunjalo, kukho inani elikhulu iintlobo kunye neendlela bezixhobo data ukudibanisa kwi network. Zeziphi ezi nkcukacha ye sixhobo?

ulwazi olusisiseko malunga nesixhobo

PoE-iadaptha - esi sixhobo, ukwenzela ithuba PoE-technology ekuvumela ukuba ukudlulisela nge amandla ezijijekileyo-isibini eqhelekileyo ifowuni oyifunayo. Kulo mzekelo, ubuchule bale Ethernet-intambo ukuba babelane imiqondiso yedijithali asilahlekanga, yaye olu thungelwano esebenza ngokupheleleyo.

Ziqonde izifinyezo PoE - Amandla phezu kwe-. Oko kukuthi "amandla phezu Ethernet standard." PoE-iadaptha maxawambi ubizwa ngokuba "injector" - kodwa ke uhlobo yesibini yesixhobo nangoku echanekileyo ukuqwalasela ukwahluka lokuqala. Thina bafunda ukusetyenziswa ethile yesixhobo ingxelo ngokomxholo inxaxheba nako PoE-technology.

Funda ngaphezulu malunga nobuchwepheshe

Technology Power over Ethernet ikuvumela ukuba ukunika amandla iintlobo-ntlobo izixhobo: Wi-Fi-imizila, iikhamera, izixhobo zokugcina. Inzuzo ephambili yale bugcisa ukuba ubandakanya ukusebenza iqela elilodwa iingcingo - kuba zombini esiveza digital, kwaye lokubonelela ngombane.

Ngenxa yoko, ukufakelwa kothungelwano akukho mfuneko yokuba ukubeka iingcingo ukuba iziseko, kwakunye ukufaka izixhobo zombane ezongezelelweyo eziyimfuneko. Kwezinye iimeko, ukufakelwa kweentambo zombane nzima indawo elifaneleyo ayikaphuhli emzimbeni kwamalungu womnatha. Umzekelo, oku kuyenzeka ukuba Wi-Fi-iadaptha inika umqondiso okungcono kwindawo kwi sakhiwo apho ukuzisa umbane eziyingxaki. Kukwanjalo ke malunga iikhamera: maxa wambi kusenokuba yimfuneko esweni iindawo ekunzima ukunika amandla.

technology PoE ikuvumela ukuba aququzelele uqhagamshelwano izixhobo zibe zifunyanwayo, leyo, njengoko sibonile ngentla, elixa ifowuni imveliso kwi network baze basebenzise namandla kuyo. Le ndlela kuqeshwa kwimeko nokuphucula izibonelelo womnatha ngoku. Kuyinto ngokwenene ukuzisa amandla zokuphuma ezikhoyo.

ubuhle be ubuchwepheshe

Ngoko ke, ukuba ukushwankathela izibonelelo ezingundoqo zobugcisa umbuzo, ukuba unako ukwenza olu luhlu lulandelayo:

- ukusetyenziswa intambo efanayo kunokwenzeka zombini ukunika amandla ngotshintshiselwano data digital;

- izibonelelo ezinokufumaneka zoqoqosho ezinxulumene kungekho mfuneko ukufaka iintambo amandla kunye nezinye izixhobo eziyimfuneko;

- lifumane kwinqanaba eliphezulu network zokhuseleko ohambelana uhlobo lwezibonelelo, ngenxa kwimilinganiselo ukuqinisekisa ukhuseleko eyimfuneko amacandelo nxamnye ombane sase;

- kukho amathuba nokuphucula izibonelelo womnatha ngoku, umbutho yonxibelelwano kwiindawo bezikhethwe kokudlulileyo ingafikeleleki for obandayo ngenxa imfuneko ngokubekwa iintambo zombane;

- kukho amathuba yokulungelelanisa izixhobo kolawulo lobekelo kude nge iprotocol womnatha.

Ngoku ukufunda imigangatho esisiseko ngokusekelwe apho asebenza PoE-network.

amazinga

Le protocol olusisiseko babandakanyeke lombutho kwezibonelelo ezifanelekileyo - 802.3af njeee. Kujongwe ukuba iquke iintlobo isixhobo womnatha 2 - imithombo amandla kunye nabathengi. Iiplastiki, njengoko sibonile ngentla apha, Wi-Fi-imizila, izixhobo zokugcina womnatha. umsebenzi camera Zintle kwiinkqubo ezinjalo. Phakathi abenzi brand ezaziwayo-kakuhle, ukuvelisa Soup, nto leyo banxibelelane i-PoE-adaptha - Axis.

Isuphu lohlobo yokuqala - imithombo - kungenziwa akhiwe kule kwinxalenye yokuqala lenethwekhi okanye phakathi isixhobo ophathwa Ukubonelela amandla ombane, kwaye umthengi. umgangatho kujongwa ivumela unikezelo lwamandla ye ephothiweyo uhlobo isibini kwiiklasi unshielded ezahlukeneyo - ingakumbi inkxaso-5, 5e no-6, ngexesha amandla ombane ayi-48 V kunye ukusetyenziswa amandla phakathi kwe-15 watts. Kulo mzekelo, azinampembelelo umgangatho ugqithiso lwedata yedijithali ngokusebenzisa intambo unganikezelwanga kunye nokuphuculwa enkulu yothungelwano lwezakhiwo ezikhoyo kule inkalo amandla kungalindelekanga.

Iindlela ukusebenzisa amandla ombane ayi

Uthungelwano, noqhuba ngokusekelwe Power phezu Ethernet standard, unako kubonelelwa umbane schemes ezimbini.

Okokuqala, kunokwenzeka ukuba ukusebenzisa kumacandelo lokugqibela imigca umqondiso abaguquli, ukuze sibenokubizwa njengendawo phezulu. Le ombane bonelelo isicelo kwiziko ukulisebenzisa kubo. Ngokufanayo nabo, kodwa kwicala ukwamkelwa, le ombane isusiwe. buchwepheshe kwenza kube lula ukusebenzisa isibini efanayo iingcingo ukuba imiqondiso yosasazo ophezulu kwamaza, kunye nokusasazwa umbane.

Okwesibini, omnye onokuzisebenzisa ukuze udlulise ukufumaneka amandla isibini abakhoyo ahambelanayo uhlobo intambo. Njani kunokwenzeka oku? Inyaniso yeyoba, e-practice 2 izibini 4 abakulo Ethernet-USB, badla awenziwanga. Kakade ke, xa kufikwa ukuthobela yabo 100 iteknoloji Base TX.

Ingakumbi waphawula ekusebenzeni uthungelwano kwifomati PoE uthatha ukuba ukusetyenziswa ethile injectors ziza kuxhomekeka ukuba zeziphi indlela - ombane yokuqala okanye yesibini zesini. Ngenxa yoko, amathuba eziphawuliweyo ezisemgangathweni 802.3af kuvumela zokuhambisa umbane iperi ngeentambo okanye 1.2, umz, 4.5 intambo. Ngenxa yoko, le injectors nga ezinokuhambelana ngokupheleleyo nale 100 Base technology TX. Nakuba kunjalo, ukuba kukho yokuchaka, ngoko ke kufuneka sisebenze kunye nayiphi na kwezikim zothumelo lwamandla okhankanywe ngentla, nokuba ezichaseneyo kwezi unxulumano ziya kutshintshwa.

Iindidi PoE-izixhobo

Kukho iindidi eziliqela izixhobo ekwaziyo ukusebenza kwimo zokuhambisa umbane phezu isibini ezijijekileyo. PoE-adaptha - omnye kubo (esihambelanayo Soup ukuba inani elikhulu iintlobo - siza kufunda Okukodwa zabo). Kunye naye, zikhona PoE-itshintshela, kwakunye izixhobo ukutya. Kwiimeko ezininzi, ukuba bafakwe kwinkqubo enye. Makhe sifunde nkcukacha nganye yeentlobo ezikhethiweyo kwezixhobo ngakumbi.

kokudla izixhobo

Odlayo izixhobo - enyanisweni, isuphu nethiwekhi, linegunya phezu isibini ezijijekileyo. Luphawu ebalulekileyo them - amanzi igalelo. Inani elifanayo lidla kumiselwa kuluhlu 19-26,5 ohms. Ngokuqhelekileyo, isakhiwo inkqubo, abaqhagamshelwe izixhobo odlayo, capacitor ukhona.

eyenziwayo

PoE Tshintshela yenzelwe ukuqinisekisa ukusebenza uthungelwano ngokwemigaqo ukuqatshelwa ukuchaneka uqhagamshelwano ngentambo kwiindawo zokungena. Network umsebenzi uhlobo ehambelana esekelwe protocol 802.3af, leyo sesitshilo ngasentla, kwakunye 802.3at. Abavumela ukuba ukunika impefumlelwano izixhobo ezahlukeneyo ngokwemiqathango ngenxa yokwanda amandla kunokwenzeka. Ukuba PoE iswitshi ayisetyenziswa, kusenokwenzeka ukuba ngenxa yokungafani random kwi yangoku ndiyaphela isibini isixhobo ejijekileyo lutshitshe.

amaqhoshana

Isuphu hlobo, njengoko sibonile ngentla apha, zihlelwa kwiintlobo ezongezelelweyo. Ngoko ke, PoE-iadaptha kunokuba ekusileleni. Kubume bayo, umbane ukho, kwakunye isiqalelo conjugation, leyo mayixhotyiswe ukuzikhetha ifakwe kule meko njengoko kwibhokisi encinci okanye ucingo oluqhelekileyo. Samandla i PoE, enyanisweni, maxa wambi ibizwa ngokuba i injector. Kwimarike Russian kukho inani elikhulu yale hlobo izisombululo. Umzekelo, i-ethandwa samandla PoE TP Link 150S. Uphawu lobuchule ibalulekileyo ahambelanayo udidi devaysa - ngcono ombane. lusebenze ithathwa 48, ukuba sithethe Madyondziselo yi TP Link.

Olunye uhlobo PoE-adaptha - ngokuthatha. Yena, ke, nayo iyasebenza ukunika izixhobo amandla nge isibini ephothiweyo, kodwa kuphela abo abangafakwanga kuhlelo lwee-ekudleni. Ukuze izixhobo kumsebenzi, kungakuhle ukuba umthamo wayo ayidluli iiwathi ezingama-24. Kusenokwenzeka ukuba kuqatshelwe ukuba inkqubo-sikhokelo le iklasi bezixhobo ezabelwe Soup, ukubayinxalenye kudidi gqiphu. Enyanisweni, nazo zivavanyelwe zibangelwa izixhobo odlayo.

Ukuba sithethe PoE-amaqhoshana, nakwezithiwe gqiphu na, yenzelwe ukusebenza kunye nezinye iintlobo izixhobo - PoE-Tshintsha. Oko main umsebenzi wabo - kokwahlulwa data womnatha kwi imisinga ezahlukeneyo zosasazo elandelayo kwisixhobo ezingezozethu ezifanele olo didi kokudla izixhobo. Gqiphu zinoxanduva inguqu ombane i olusetyenziswa kubo, abo amanqanaba leyo elilelona ukuba izixhobo yesiphelo - umzekelo, mhlawumbi kumanani-5, 12 okanye 48 V.

Ngenxa yoko, nakwezithiwe gqiphu nazo zihlelwa ngeentlobo ezimbini - active and passive. Ke ukuba ngowokuqala, bakwazi ukusebenza njenge utshintsho, kunye supply ezisebenza ngokubakho. izixhobo ezinjalo ziquka, umzekelo, uhlobo yokuchaka DWL-P50 ukusuka D-Link. PoE-adaptha ezithathwa nje uhlobo isixhobo phantsi ingqalelo nayo kwisixando sokwenziwa. Bayakwazi ukusebenza kuphela injectors. Kulo mzekelo, wona iingcali, badla bathengisa kunye nabo iphakheji enye.

Bokuqonda amaqhoshana zokusebenza

Kunye ezisebenza ngokubakho eyiyo uxhulumaniso Yenza Amandla phezu technology Ethernet, iingxaki kunye nombutho yokusebenza womnatha le nto ukuba yenzeke. Kodwa ezinye iingxaki, ngenxa yemigangatho ethile esetyenziswa kwiinkqubo ezinjalo kusengenzeka. Umzekelo, PoE-Tshintsha ungagqiba ukuba icebo esebenzayo umthombo lo odlayo, kunye womnatha nga okwethutyana de-amandla yokuba inkqubo ezisebenza kwi yokuchaka kwisixando sokwenziwa. Kuyimfuneko, ke, endaweni yaso ungathatha esebenzayo. Enye ingxaki enokwenzeka - off ombane xa uzama ukwazi ukuqhagamshela ifowuni odlayo ukuya iswitshi. It ingasombululwa ngokufaka devaysa olongezelelweyo - PoE-lokuguqulela.

An into umdla kukuba ngokubhekiselele kwiindleko lweshishini, apho sachitha womnatha, kukho inani elincinane izixhobo odlayo nenzuzo nto ukusebenzisa Soup zezenzi, kunye enkulu - esebenzayo. Abanye IT-iingcali zikholelwa ukuba nkqu nasemva inani leendawo ukufikelela lingaphezu iziqwenga 3, ungasebenzisa amaqhoshana esebenzayo.

uhlobo cable lusebenze

Igunya phezu technology Internet libonisa ukubandakanyeka ngaloo isibini ezijijekileyo. Kodwa, njengokuba usazi, iintlobo ezahlukeneyo - umzekelo, 2 no-4 ngababini. Ngowuphi umntu ifanele khulu ukufakelwa uhlobo olufanelekileyo of network? Ngokutsho kweengcali, ukusebenza kwenkqubo ndiyisindise ukusebenzisa naluphi na uhlobo intambo. Kodwa ke ukuba kukho umthwalo onzima phezu iswitshi - umzekelo, xa usebenzisa iyafumaneka onke amachweba, intambo kunye ngababini-4 - ukhetho engcono.