DIY 10/100M Ethernet PoE Injector: 6 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Ntawm no peb yuav ua qhov yooj yim PoE inector haum rau 10/100M ethernet, kuj tseem tuaj yeem siv ncaj qha nrog roj teeb.

Kauj Ruam 1: Dab Tsi Xav Tau?

Yog tias koj tau teeb tsa lub network txuas nrog lub cuab yeej zoo li sab nraum zoov nkag mus rau WiFi, lub koob yees duab IP, lossis WiMax CPE, nws tuaj yeem ua rau tsis txaus siab los khiav lwm lub zog hluav taws xob sib cais.

Yog li, yog cov cuab yeej nyob deb txhawb lub zog hla Ethernet, tom qab ntawd koj tuaj yeem siv lub luag haujlwm ntawd tshem tawm qhov sib cais fais fab cable.

Kauj Ruam 2: Dab tsi yog Vim Li Cas Koj Xav Ua Ib Qhov es Tsis Yog Yuav?

• Thawj qhov los rau hauv siab yog hais txog nyiaj txiag, muaj cov tshuaj pheej yig muaj, tab sis ntau ntawm lawv yog tus nqi tsis txaus ntseeg. Vim li cas ho tsis siv qee cov khoom siv hluav taws xob tso tseg ib puag ncig los ua txoj haujlwm?
• Lwm qhov zoo dua yog koj tuaj yeem txuas ncaj qha rau lub roj teeb, uas yuav txo qis kev siv dag zog.
• Thiab kawm paub txog yuav ua li cas Ethernet PoE ua haujlwm tau txais txiaj ntsig zoo dua, koj qhov kev cuam tshuam tom ntej nrog PoE yuav yooj yim dua.

Kauj Ruam 3: Yuav Ua Li Cas PoE Ua Haujlwm - Theory

Feem ntau peb siv Ethernet hla cov khub sib tw, cov xov tooj feem ntau paub zoo li LAN cable, tab sis Ethernet lub cev txheej tsis yog tsuas yog txwv rau cov khub sib tw, thaum xub thawj nws siv cov kab sib txuas! Tam sim no cov iav fiber ntau tau siv dav.

Hauv 10/100M Ethernet hla cov khub sib tw, tsuas yog siv 2 khub (4 xov hlau), yog li peb tuaj yeem siv tau yooj yim siv lwm ob qhov tsis siv ntawm ob lub Cat5/Cat6 cable xa lub zog mus rau cov cuab yeej nyob deb.

Cov kws tshaj lij ua ntau yam ntau dua li tsuas yog xa lub zog, cov no hu ua PoE lub tshuab nqus dej, tab sis ntawm no peb tab tom yuav ua qhov sib txawv yooj yim, passive PoE.

Nws tsis txiav txim siab xaiv lub zog siv hluav taws xob, siv lub zog ntawm lub cuab yeej lossis lwm yam zoo li, tsuas yog muab lub zog.

Raws li txhua 4 khub tau siv hauv Gigabit Ethernet, koj tsuas yog tsis tuaj yeem txiav cov khub uas tsis siv los xa lub zog.

Kauj Ruam 4: Cia Ua Tus DIY PoE Injector

Cov kauj ruam no tshwj xeeb tshaj yog nyob ntawm koj lub router thiab cov khoom siv muaj.

• Yog tias lub router/AP/CPE tuaj yeem siv lub zog ncaj qha los ntawm qhov chaw nres nkoj ethernet ces koj yuav tsum teeb tsa tsuas yog Cov Khoom Siv Hluav Taws Xob (PSE).
• Yog tias lub router/AP/CPE tsis tuaj yeem siv lub zog los ntawm qhov chaw nres nkoj ethernet, tom qab ntawd koj yuav tsum ua lub zog sib cais ntawm cov cuab yeej siv hluav taws xob nyob deb (PD).

Rau kuv, qhov chaw nkag sab nraum zoov tuaj yeem siv lub zog ncaj qha los ntawm qhov chaw nres nkoj ethernet, yog li kuv tsis tas yuav ua lub zog sib cais. Txog cov khoom siv fais fab (PSE) koj tuaj yeem siv ua nws raws li koj xav tau.

Kuv yooj yim txuas txog 4 lub tsho sab nrauv ntawm UTP Cat5e cable, sib cais xiav+dawb/xiav thiab xim av+dawb/xim av xov hlau, hle lawv thiab txuas nrog qee cov xov hlau.

Koj tseem tuaj yeem txuas cov xov hlau tsis muaj qhov txuas, tab sis qhov ntawd yuav tsis muaj zog li cov khoom siv tau.

Lossis koj tuaj yeem txuas qhov no rau lub roj teeb uas tsim nyog nrog lub router lub zog xav tau. Ob peb lub router, sab nraum zoov AP lees paub ntau yam ntawm cov tswv yim 12V txog 24V, yog li koj tuaj yeem txuas nws kom nyab xeeb rau 12V roj teeb ua kua qaub tsis muaj kev ntshai.

Yog tias koj lub router khiav ntawm 5V, tom qab ntawd koj tuaj yeem txuas nws mus rau lub roj teeb 6V txhuas-kua qaub nrog ob lub 1N4007 diodes ua ke.

Hauv qab no kuv txuas kuv ob lub router thiab sab nraum CPE ncaj qha rau 12V 60Ah lub hnub ci roj teeb, nws muab yuav luag 3 hnub thaub qab tsis muaj hnub ci.

Cat5e cable nyob ib puag ncig 25 meter, txuas nrog AP sab nraum zoov, uas siv ib puag ncig 500mA ntawm 12V. TP-Txuas router zoo siab ua haujlwm ntawm qhov hluav taws xob dav, txuas ncaj qha rau 12V DC los ntawm roj teeb.

Kauj Ruam 5: Cov Lus Qhia thiab Xeem

• Cat5 cable ib txwm nkim qee lub zog, qhov siab dua txhais tau tias qis dua tam sim no, yog li qis zog poob. Sim ua lub zog ntaus ntawv nrog qhov siab dua li 24V lossis 48V yog tias ua tau.
• Cov ntsiab lus nkag sab nraum zoov feem ntau yuav tsis ua haujlwm yog qhov hluav taws xob qis dua 10V ntawm qhov kawg tau txais, yuav ua rau rov pib dua. Yog li xam qhov hluav taws xob poob hauv kab.

Nov koj tuaj yeem suav qhov ntsuas hluav taws xob poob qis, raws li Cat5e cov lus qhia tshwj xeeb, DC lub voj tsis kam rau ib khub nyob ib puag ncig.10.188Ω/m, nrog cov kab tsis zoo tshaj plaws, cia peb hais tias nws yog 0.2Ω/m.

Raws li peb tab tom siv ib khub hlau txuas ua ke, yog li qhov ua tau zoo DC lub voj tsis kam yog 0.1Ω/m, yog li rau 25m ntawm cable, tag nrho DC lub voj tsis kam yog 25x (0.05 × 2) = 2.5Ω. Ntawm 500mA, qhov poob qis yuav yog 0.5 × 2.5 = 1.25V.

Qhov kev poob qis no tau suav nrog qhov ntsuas tsis zoo, yog li peb yuav cia siab tias 1V poob ntawm qhov tau txais qhov kawg. Yog li koj yuav tsum xaiv lub zog hluav taws xob uas muaj peev xwm muab hluav taws xob txaus nrog rau qhov poob.

Tam sim no lwm qhov hais txog pheej yig Cat5e lossis Cat6 cables, feem ntau ntawm lawv yog tsim los ntawm tooj liab clad txhuas, lawv ua rau muaj kev tiv thaiv ntau dua, yog li muaj ntau qhov hluav taws xob poob thiab poob lub zog. Cov xov hlau no tawg yog sib tw nyuaj, txoj hauv kev yooj yim tshaj plaws los txheeb xyuas lawv. Yog li rau DIY qhov project PoE injector mus nrog cov kab hluav taws xob zoo.

Raws li tsis muaj xov hlau txuas nrog sab hauv sab hauv ntawm lub ethernet adapter, nws yuav tsum ua haujlwm nrog ib qho khoom siv muaj peev xwm PoE thiab daim npav ethernet, suav nrog usb rau ethernet adapter.

Kauj Ruam 6: Xaus

Yog li ntawd txhua yam rau txoj haujlwm no, nws yuav ploj qee cov ntaub ntawv muaj txiaj ntsig, qhia rau kuv paub yuav ua li cas kuv tuaj yeem txhim kho nws ntxiv los ntawm cov lus pom. Nyeem ntxiv ntawm wikipedia.

PoE rau Gigabit Ethernet yuav nyuaj me ntsis, vim nws tau koom nrog kev thawb lub zog los ntawm Ethernet cov hlau nplaum.

Ntawm qhov siab dua tam sim no Ethernet cov hlau nplaum yuav ua kom sov lossis txawm tias tawg vim lawv cov cua ntsawj ntshab thiab tiv taus ntau dua, nws yuav nthuav kom pom ntau npaum li cas tam sim no lawv tuaj yeem nqa tau.