Lifi (Xa Suab Nkauj Analog Teeb Los Ntawm Led): 4 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27

CEEB TOOM !

*** Thov txim yog tias nws tsis tuaj yeem nyeem nws yog kuv thawj qhov tsis nkag siab yog li ua siab zoo *** _

Taw qhia:

Ob peb xyoos dhau los tau muaj kev loj hlob sai hauv kev siv thaj tsam RF ntawm cov tshuab hluav taws xob. Qhov no yog vim qhov kev loj hlob loj ntawm cov xov tooj ntawm tes tso npe hauv lub sijhawm tsis ntev los no. Qhov no tau ua rau txo qis nrawm nrawm rau cov khoom siv yav tom ntej. Lub teeb-fidelity (Li-Fi) ua haujlwm nyob rau hauv pom lub teeb pom kev zoo ntawm lub tshuab hluav taws xob piv txwv li nws siv lub teeb pom kev ua qhov nruab nrab ntawm kev sib kis ntau dua li cov xov tooj cua ib txwm muaj uas muaj ntau dua hauv kev sib piv piv rau RF siv yooj yim Circuit Court thiab teeb pom kev zoo chav uas tuaj yeem nyob rau tib lub sijhawm txuag nyiaj thiab lub zog los ntawm Counterflix.

Li-Fi sawv rau Lub Teeb-Fidelity. Li-Fi yog kev xa cov ntaub ntawv siv lub teeb pom kev los ntawm kev xa cov ntaub ntawv los ntawm lub teeb ci LED uas sib txawv hauv qhov nrawm dua li tib neeg lub qhov muag tuaj yeem ua raws. Yog tias LED tau qhib, lub ntsuas ntsuas duab sau npe rau ib qho binary; txwv tsis pub nws yog binary xoom. Lub tswv yim ntawm Li-Fi tau qhia los ntawm tus kws tshaj lij German, Harald Hass, uas nws tseem hu ua "Cov Ntaub Ntawv dhau Kev Pom Kev Pom Kev". Lub sijhawm Li-Fi tau siv thawj zaug los ntawm Haas hauv nws TED Kev Sib Tham Ntiaj Teb ntawm Kev Pom Kev Pom Kev Sib Txuas. Raws li Hass, lub teeb, uas nws hu ua „DLight‟, tuaj yeem siv los tsim cov ntaub ntawv tus nqi siab dua 1 Giga bits ib ob uas nrawm dua li peb qhov kev sib txuas broadband nruab nrab.

Kauj Ruam 1: Nqa koj cov ntawv thiab cov khoom siv

Qhov txiaj ntsig tseem ceeb ntawm Led hla kev xa xov laser yog tias coj tau yooj yim dua thiab lawv tsis xav tau ntau yam khoom.

Cov Cheeb Tsam Yooj Yim ntawm Cov Hluav Taws Xob:

Transmitter:

- Lub Hwj Huam Fais Fab (5V Cov Khoom) thiab (12V Cov Khoom Siv rau LED)

Capacitors (470uf, 2*10nf, 20nf)

- Resistors (1k, 10k kuj sib txawv)

- NE555 IC

-Transistor (tip122) (lossis mosfet)

- Potentiometer (Hloov qhov zaus ntawm oscillator)

- Lub teeb ci - 1W LED (lossis Peb coj hauv koob)

Txais:

Cov Cheebtsam yooj yim ntawm Cov Neeg Txais Kev Tshawb Fawb yog:

· Yees Duab Ntes - Hnub ci cell

· TDA2822n

· Hais lus 4 ohm 1 w

· Capacitor (100 uf, 2*1000 uf, 0.1 uf)

· Kuj (10k)

· Hloov pauv tsis kam (50 k)

· 9v roj teeb lossis lwm yam khoom siv fais fab (nruab nrab ntawm 5v thiab 15v)

Khoom siv:

Soldring hlau, pcb, kub kua nplaum phom…..etc

Kauj Ruam 2: TRANSMITTER CIRCUIT:

CIRCUIT ua haujlwm

Hauv Ne555 nyob rau hauv tus pin 5 a VCO ib qho hluav taws xob Tswj oscillator uas ib txwm tig qhov dav ntawm sine yoj mus rau qhov dav ntawm cov mem tes raws li nws tau qhia hauv oscilloscope:

Cov Capacitors C3, C4 yog cov ntxaij lim dej kom txo qis AC cov khoom sib txuas hauv Circuit.

Qhov dav ntawm cov mem tes yoj yog tswj los ntawm Tus tiv thaiv RV1 los ntawm kev hloov tus nqi ntawm qhov tsis kam peb hloov lub sijhawm them nyiaj thiab tso tawm lub tshuab hluav taws xob thiab btw hloov lub sijhawm lub plawv dhia nyob siab thiab qis yog li nws hloov lub sijhawm ntawm/tawm teeb liab hauv tus pin tso tawm 3, txo tus nqi ua haujlwm qhov ntau dua yuav raug hloov pauv hauv cov zis.

Lub teeb liab mem tes yog sib npaug rau ON/OFF Teeb liab hauv Tus lej pin 3 uas tswj qhov siv ntawm Lub Teeb Pom Kev LED (D1) (D2) (D3).

Lub Pulse wave tau txuas ntxiv thiab hloov kho siv Transistor TIP121 (T1) (nws yog lub suab nrov nrov tab sis siv mosfet muaj txiaj ntsig zoo dua), uas yog Amplifier Modulator muaj qhov nce siab tam sim no. Lub transistor yuav ua lub Teeb Tsav Tsheb thiab tsav LED. LED tso lub teeb raws li daim ntawv mem tes yoj thiab ua lub neej (Lub teeb-Fidelity)

Txog qhov haujlwm peb paub tias tib neeg pob ntseg tuaj yeem hnov ntawm 100 hz - 20khz yog li peb siv cov neeg xa xov tooj cua ntau tshaj 20 khz lossis siab dua thiab los ntawm txoj kev tsuas yog hnov lub suab tawm tswv yim hauv tus txais xov tooj cua.

Kauj Ruam 3: RECEIVER CIRCUIT:

CIRCUIT ua haujlwm:

Lub hnub ci ntawm tes tau siv los txhawm rau pom lub teeb los ntawm LEDs uas xa mus. Thiab rov tsim dua tshiab

qhov tso tawm Analog sib xws rau lub teeb liab nkag.

Qhov zaus ntawm qhov sib piv yuav zoo ib yam li cov teeb liab nkag mus, vim tias qhov flickering ntawm LED yog tswj los ntawm cov teeb liab nkag thiab lub hnub ci ntawm tes pom tsuas yog qhov hloov pauv ntawm cov teeb liab LED thiab tsim tawm.

Tom qab ntawd cov txiaj ntsig tau nthuav dav siv TDA22. Nws kuj tseem pab tshem tawm cov theem hloov pauv tshwm sim hauv cov teeb liab xa mus. Thiab tom qab ntawv lim kom tshem tawm lwm chav teeb pom kev txog 60hz siab dhau lim Lub Amplified teeb liab tau pub rau tus hais lus.

Tus hais lus hloov pauv lub teeb liab analog mus rau Lub Suab Pom Lub Suab siv lub tshuab hluav taws xob tam sim no hauv Tus Hais Lus.

Kauj Ruam 4: Soldering ntawm Pcb:

1 Transmitter Soldering:

Kuv Tsuas yog xav ua kom nws zoo li lub teeb pom kev zoo, yog li kuv txiav lub pcb kom haum rau hauv lub teeb pom kev zoo, tom qab ntawd siv tag nrho cov khoom siv thiab pib ua haujlwm raws li qhov sib txawv

2 - Tus neeg txais khoom siv

. Txhua yam tsis ua dab tsi tshwj xeeb tsuas yog siv cov laug.

Muaj koj muaj nws nws ua tiav xd:)

Yog tias koj xav paub ntau ntxiv koj tuaj yeem nyeem lo lus ntawv (.docx)

Xaus:

Los ntawm kev siv Li-Fi peb tuaj yeem muaj Kev Txuag Zog Txaus Siab. Nrog cov neeg coob zuj zus thiab lawv cov cuab yeej siv ntau hauv internet siv wireless, ntawm ib txoj hauv kev xa cov ntaub ntawv ntawm kev nrawm thiab tus nqi pheej yig. Yav tom ntej peb tuaj yeem muaj LED teeb nyob ib sab ntawm txoj kev tsheb nqaj hlau pab ua kom pom txoj hauv kev, nthuav tawm cov kev hloov pauv tshiab kawg thiab xa cov ntaub ntawv xov tooj mus rau wireless rau cov neeg caij tsheb Laptops, Notebooks thiab Smart phone. Qhov no yog yam zoo ib yam ntxiv, txuag lub zog sib luag uas ntseeg tau tias xa los ntawm cov thev naus laus zis no.