Dab tsi yog PoE? PoE hloov yog dab tsi?
PoE (tseem hu ua IEEE 802.3af tus qauv) yog tus qauv tshiab raws li Power over Ethernet system tshaj tawm los ntawm IEEE 802.3 pawg neeg ua haujlwm xyoo 2003. Tus qauv tau hais tias lub zog tau txais cov khoom siv (PD), xws li VoIP xov tooj, tsuas yog yuav tsum tau siv ob txoj kev sib tw ntawm tib lub network cable los ua lub zog thaum lub zog tau txais cov txheej txheem, thiab nws cov PoE lub zog siv hluav taws xob tuaj yeem mus txog 12.95W. Yog tias koj xav paub ntau ntxiv txog PoE, koj tuaj yeem nyem rau saib" Txog PoE lub zog hluav taws xob, muaj txhua yam koj xav paub txog"
PoE hloov, tseem hu ua PoE fais fab mov hluav taws xob, yog daim ntawv thov raws li PoE thev naus laus zis. Nws yog qhov hloov uas tuaj yeem muab lub zog thiab cov ntaub ntawv xa mus rau lub hwj chim tau txais cov davhlau ya nyob twg tib lub sijhawm los ntawm lub network cable, thiab belongs rau lub hwj chim muab cov khoom siv davhlau ya nyob twg (PSE). Yog tias koj xav paub ntau ntxiv txog PoE hloov thiab lawv cov ntsiab cai ua haujlwm, koj tuaj yeem nyem [Cov Lus Nug thiab Cov Lus Teb] Qhov PoE hloov yog dab tsi? Vim li cas koj thiaj xav tau tus PoE pauv? Feem ntau hais lus, siv hluav taws xob PoE hloov mus rau 802.3af tus qauv tuaj yeem txhawb nqa lub zog hluav taws xob ntau tshaj plaws ntawm 15.4W rau ib qho chaw nres nkoj thiab hloov fais fab voltage ntawm 44V-57V. Qhov ntsuas hluav taws xob ntawm PoE lub cuab yeej txuas nrog rau qhov hluav taws xob PoE no yog 37V-57V.
Dab tsi yog PoE +? PoE + hloov pauv yog dab tsi?
PoE + (tseem hu ua IEEE 802.3af tus qauv), raws li kev hloov kho rau PoE thev naus laus zis, yog PoE kev tshaj lij txheej txheem tso tawm xyoo 2009. Nrog rau kev thov dav ntawm PoE thev naus laus zis, qee lub zog tau txais cov khoom siv xws li wireless APs xav tau ntau lub zog ntau dua 12.95W. Txhawm rau daws qhov teeb meem no, IEEE 802.3 pawg neeg ua haujlwm tso tawm PoE + thev naus laus zis tsim kom muaj lub zog loj dua rau cov khoom siv.
Kev hloov pauv ntawm PoE + zoo ib yam li PoE tus qauv uas peb tau hais saum toj no, thiab nws tseem muab lub zog rau PoE lub davhlau ya nyob twg los ntawm kev xa xov network. Qhov sib txawv yog tias qhov ntau tshaj qhov hluav taws xob rau txhua qhov chaw nres nkoj ntawm PoE + hloov pauv yog 30W, thiab lub zog hluav taws xob voltage yog 50V-57V. Qhov siab zog hluav taws xob tau txais los ntawm lub cuab yeej hluav taws xob tau txais ntau ntxiv rau 25.5W, thiab qhov voltage tuaj yeem tau nce mus rau 42.5V-57V.
PoE++ yog dab tsi? PoE++ hloov yog dab tsi?
Nrog txoj kev txhim kho txuas ntxiv ntawm PoE daim ntawv thov kev ua lag luam, IEEE 802.3 tsev neeg cov qauv ib zaug tau coj tus tswv cuab tshiab xyoo 2018: tus qauv IEEE 802.3bt. Nyob rau tam sim no, PoE++ thev naus laus zis kuj tau tshwm sim. Raws li IEEE 802.3bt txuj, PoE++ thev naus laus zis muaj ob hom ceg ntoo. Ib qho PoE++ thev naus laus zis hu ua Type3 tuaj yeem siv los ntawm ob lossis plaub txoj kev sib tw ntawm tib lub network cable, thiab tuaj yeem tso tawm txog 51W ntawm lub zog nkag rau lub zog tau txais. Lwm qhov yog Type4PoE ++ thev naus laus zis, uas yuav tsum tau muab lub zog rau PoE lub davhlau ya nyob twg los ntawm txhua tus khub ntawm lub network cable, thiab lub zog nkag tuaj yeem ncav cuag 71W. Tsis tas li ntawd, muaj PoE thev naus laus zis raws li IEEE 802.3bt tus qauv hu ua UPOE (muaj hwj huam thoob ntiaj teb Ethernet). Cov thev naus laus zis yog tswv ntawm Cisco, thiab hom kev ua haujlwm zoo ib yam li Type3PoE thev naus laus zis (PoE + +), thiab lub zog fais fab uas tuaj yeem muab rau qhov tau txais cov khoom kawg yog 51W. Yog li ntawd, qee tus neeg hauv kev lag luam tseem yuav suav UPOE ua PoE++.
Ua kev hloov kho rau PoE hloov thiab PoE {{0}} keyboards, PoE++ keyboards tuaj yeem muab txog li 60W ntawm lub zog rau ib qho chaw nres nkoj rau Type3PoE itches keyboards thiab 100W rau Type4. Lub pob hluav taws xob sib txawv nyias muaj nyias lub zog tawm, lub zog nkag rau, thiab kev txhawb nqa lub network cable yam.
Yuav Yuav PoE keyboards li cas piv rau PoE {{0}} thiab PoE++ keyboards?
Los ntawm cov lus qhia dhau los, peb tuaj yeem pom tias PoE hloov yog qhov sib txawv ntawm lub zog loj thiab cov hom ua haujlwm piv rau PoE {{0}} thiab PoE++ keyboards. Cov kev sib txawv no tseem yuav cuam tshuam rau lawv cov ntawv thov sib txawv.
Kev hloov pauv rau PoE raws li 802.3af tus qauv feem ntau muaj lub zog fais fab tsis tshaj 15.4W rau ib qho chaw nres nkoj, thiab tuaj yeem txuas rau VoIP xov tooj, ntsuas, ntsuas lub ntsuas, wireless APs nrog ob khub ntawm antennas, soj ntsuam lub koob yees duab zoo li qub thiab lwm lub davhlau ya nyob twg. pab kiag li lawm. Kev hloov pauv ntawm PoE + tuaj yeem txhawb nqa kev ua tau zoo dua txav tau lub koob yees duab, wireless APs nrog rau 6 khub ntawm tus kav hlau txais xov, IP xov tooj, thiab lwm yam.
Ntaus key3PoE with cov hloov hluav taws xob uas muaj peev xwm ntau dua tuaj yeem pab txhawb kev sib txuas ntawm lub rooj sib tham video thiab cov khoom siv tswj tsev, thiab lwm yam.
Xaus
Raws li cov neeg' s kev xav tau rau cov cuab yeej siv fais fab fais fab muaj peev xwm tau nce lawm, hwj chim dhau ntawm Ethernet technology kuj tau txuas ntxiv txhim kho thiab txhim kho. Tsav los ntawm cov qauv no, cov hloov pauv raws li PoE thev naus laus zis kuj tau hloov zuj zus los ntawm qhov pib hloov pauv PoE rau cov hloov pauv PoE recent tsis ntev los no.