1 Gabatarwa
Ana kuma kiran PoE Power over LAN (PoL) ko Active Ethernet, wani lokacin ana kiranta Power over Ethernet a takaice. Wannan shine sabon ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun bayanai waɗanda ke amfani da daidaitattun kebul na watsa Ethernet na yanzu don watsa bayanai da ƙarfi a lokaci guda, kuma yana kiyaye dacewa tare da tsarin Ethernet da masu amfani. Ma'aunin IEEE 802.3af sabon ma'auni ne bisa tsarin POE na tsarin Power-over-Ethernet. Yana ƙara ma'auni masu alaƙa don samar da wutar lantarki kai tsaye ta igiyoyin hanyar sadarwa akan tushen IEEE 802.3. Yana da tsawo na ƙa'idar Ethernet data kasance da kuma ma'auni na farko na duniya don rarraba wutar lantarki. misali.
IEEE ya fara haɓaka ma'auni a cikin 1999, kuma farkon masu siyar da shiga sune 3Com, Intel, PowerDsine, Nortel, Mitel, da Semiconductor na ƙasa. Duk da haka, rashin wannan ma'auni ya kasance yana hana fadada kasuwa. Har zuwa Yuni 2003, IEEE ta amince da ma'auni na 802.3af, wanda ya bayyana a sarari gano wuta da abubuwan sarrafawa a cikin tsarin nesa, kuma an haɗa shi.hanyoyin sadarwa, masu sauyawa, da cibiyoyi zuwa wayoyin IP, tsarin tsaro, da cibiyoyin sadarwar yanki mara waya ta hanyar igiyoyin Ethernet. Hanyar samar da wutar lantarki don maki da sauran kayan aiki ana tsara su. Haɓaka IEEE 802.3af ya haɗa da ƙoƙarin ƙwararrun ƙwararrun kamfanoni, wanda kuma ya ba da damar a gwada daidaitattun.
Yawan iko akan tsarin Ethernet. Sanya Ethernetcanzakayan aiki a cikin kabad ɗin wayoyi, kuma yi amfani da cibiyar tsakiyar tazara tare da tashar wutar lantarki don samar da wuta ga karkatattun biyu na LAN. A ƙarshen karkatattun biyun, ana amfani da wutar lantarki don kunna wayoyi, wuraren shiga mara waya, kyamarori, da sauran na'urori. Don guje wa katsewar wutar lantarki, ana iya amfani da UPS.
2 ka'ida
Madaidaicin kebul na cibiyar sadarwa na Category 5 yana da nau'i-nau'i nau'i-nau'i guda hudu, amma biyu kawai ana amfani da su a cikin l0M BASE-T da 100M BASE-T. IEEE80 2.3af yana ba da damar amfani biyu. Lokacin da aka yi amfani da fil ɗin da ba ya aiki don samar da wutar lantarki, ana haɗa fil 4 da 5 azaman sandar sanda mai kyau, kuma fil 7 da 8 ana haɗa su azaman sandar wuta.
Lokacin da aka yi amfani da fil ɗin bayanai don samar da wutar lantarki, ana ƙara wutar lantarki ta DC zuwa tsakiyar tashar watsawa, wanda ba ya shafar watsa bayanai. Ta wannan hanyar, biyu 1, 2 da biyu 3, 6 na iya samun kowane polarity.
Ma'auni baya bada izinin aikace-aikacen sharuɗɗan biyu na sama a lokaci guda. Kayan aikin samar da wutar lantarki PSE na iya samar da amfani guda ɗaya kawai, amma kayan aikin aikace-aikacen wutar lantarki PD dole ne su iya daidaitawa da yanayi biyu a lokaci guda. Ma'aunin ya nuna cewa wutar lantarki yawanci 48V, 13W. Yana da sauƙin sauƙi ga kayan aikin PD don samar da 48V zuwa ƙananan jujjuyawar wutar lantarki, amma a lokaci guda ya kamata ya sami ƙarfin lantarki na kariya na 1500V.
3 sigogi
Cikakken tsarin POE ya haɗa da sassa biyu: kayan aikin samar da wutar lantarki (PSE) da kayan samar da wutar lantarki (PD). Na'urar PSE wata na'ura ce da ke ba da wuta ga na'urar abokin ciniki na Ethernet, kuma ita ce mai sarrafa dukkan tsarin samar da wutar lantarki na POE. Na'urar PD wani nau'i ne na PSE wanda ke karɓar iko, wato, na'urar abokin ciniki na tsarin POE, kamar wayoyin IP, kyamarar tsaro na cibiyar sadarwa, APs, da sauran na'urorin Ethernet da yawa, kamar PDAs ko caja na wayar hannu (a gaskiya, kowane iko baya wuce 13W Na'urar zata iya samun daidaitaccen wutar lantarki daga soket RJ45). Biyu sun dogara ne akan ma'auni na IEEE 802.3af kuma suna kafa haɗin kai ta hanyar haɗin PD, nau'in na'ura, matakin amfani da wutar lantarki da sauran bayanai na na'urar karɓar wutar lantarki, kuma a kan wannan, PD yana amfani da PSE ta hanyar Ethernet.
Babban sigogin halayen samar da wutar lantarki na daidaitaccen tsarin samar da wutar lantarki na POE sune:
1. Wutar lantarki yana tsakanin 44V da 57V, tare da ƙima na 48V.
2. Matsakaicin izini na yanzu shine 550mA, kuma matsakaicin farawa na yanzu shine 500mA.
3. Halin aiki na yau da kullum shine 10-350mA, da kuma ganowa na yau da kullum shine 350-500mA.
4. A karkashin yanayi mara nauyi, iyakar da ake buƙata shine 5mA.
5. Samar da matakai uku na buƙatun wutar lantarki na 3.84 ~ 12.95W don kayan aikin PD, matsakaicin baya wuce 13W. (Lura cewa matakan PD 0 da 4 ba a nuna su kuma bai kamata a yi amfani da su ba.)
4 tsarin aiki
Lokacin shirya kayan aikin tashar wutar lantarki ta PSE a cikin hanyar sadarwa, ana nuna tsarin aiki na POE Power akan Ethernet a ƙasa.
1. Ganewa
A farkon, na'urar PSE tana fitar da ƙaramin ƙarfin lantarki a tashar jiragen ruwa har sai ta gano cewa haɗin tashar tashar kebul na'ura ce mai karɓar wuta wacce ke goyan bayan daidaitattun IEEE 802.3af.
2. Rarraba na'urar PD
Lokacin da aka gano PD na na'urar ƙarshen karɓar, na'urar PSE na iya rarraba na'urar PD kuma ta kimanta asarar wutar da na'urar PD ke buƙata.
A lokacin lokacin farawa na lokacin daidaitawa (gaba ɗaya ƙasa da 15μs), na'urar PSE ta fara ba da wutar lantarki ga na'urar PD daga ƙaramin ƙarfin lantarki har sai ta samar da wutar lantarki na 48V DC.
4. Wutar lantarki
Yana ba da ƙarfin ƙarfin 48V DC mai ƙarfi da aminci don kayan aikin PD don saduwa da ƙarfin amfani da kayan aikin PD wanda bai wuce 15.4W ba.
5. Kashe wuta
Idan na'urar PD ta katse daga hanyar sadarwar, PSE za ta yi sauri (yawanci tsakanin 300-400ms) ta dakatar da kunna na'urar PD, kuma ta sake maimaita tsarin ganowa don gano ko an haɗa tashar USB zuwa na'urar PD.
5 Hanyar samar da wutar lantarki
Ma'aunin PoE ya bayyana hanyoyi guda biyu don amfani da igiyoyin watsawa na Ethernet don watsa wutar lantarki zuwa na'urorin POE masu jituwa:
1.Mid-Span
Yi amfani da nau'i-nau'i na waya mara amfani a cikin kebul na Ethernet don watsa ikon DC. Ana amfani da shi tsakanin talakawa masu sauyawa da kayan aikin tashar tashar sadarwa. Yana iya ba da wuta ga kayan aikin tashar tashar sadarwa ta hanyar kebul na cibiyar sadarwa. Midspan PSE (tsakiyar kayan samar da wutar lantarki) kayan aikin sarrafa wutar lantarki ne na musamman, galibi ana haɗa su tare dacanza. Yana da jacks RJ45 guda biyu masu dacewa da kowane tashar jiragen ruwa, ɗayan yana haɗi zuwacanzatare da gajeren kebul, kuma ɗayan yana haɗa zuwa na'urar nesa.
Ƙarshe-Span
Ana watsa wutar lantarki a lokaci guda akan ainihin wayar da ake amfani da ita don watsa bayanai, kuma watsa ta tana amfani da mitar daban-daban daga siginar bayanan Ethernet. Madaidaicin Ƙarshen Ƙarshen PSE (kayan samar da wutar lantarki) yana da Ethernetcanza, na'ura mai ba da hanya tsakanin hanyoyin sadarwa, cibiya ko wasu kayan aikin sauya hanyar sadarwa da ke goyan bayan aikin POE. Ana iya hasashen cewa za a haɓaka Ƙarshen-Span cikin sauri. Wannan shi ne saboda bayanan Ethernet da watsa wutar lantarki suna amfani da nau'i-nau'i na kowa, wanda ke kawar da buƙatar saita layin da aka keɓe don watsa wutar lantarki mai zaman kanta. Wannan don igiyoyi 8-core kawai ne kuma daidaitaccen daidaitaccen RJ- Socket 45 yana da mahimmanci musamman.
6 ci gaba
PowerDsine, mai kera guntu-kan-Ethernet guntu, zai gudanar da taron IEEE don ƙaddamar da ƙa'idar "high-power-over-Ethernet", wanda zai tallafawa samar da wutar lantarki don kwamfyutoci da sauran na'urori. PowerDsine zai ƙaddamar da farar takarda, yana ba da shawarar cewa 802.3af daidaitaccen shigarwar 48v da 13w da ke akwai iyakar ƙarfin ya kamata a ninka sau biyu. Baya ga kwamfutocin littafin rubutu, sabon ma'auni na iya kunna nunin kristal ruwa da wayoyin bidiyo. A ranar 30 ga Oktoba, 2009, IEEE ya fitar da sabon ma'auni na 802.3at, wanda ya nuna cewa POE na iya samar da ƙarfi mafi girma, wanda ya wuce 13W kuma zai iya kaiwa 30W!