Li-Fi technology (super-ceev ceev Internet LED): txheej txheem cej luam, piav qhia, ntaus ntawv thiab zeem muag

Li-Fi - ib tug tshiab cov ntaub ntawv hloov lwm lub tsev technology uas yuav revolutionize lub lag luam nyob rau hauv lub neej yav tom ntej, tsim txuj siav rau kev siv niaj hnub no, thiab tseem npaj los ua ib tug multibillion-duas kev lag luam los ntawm 2022. Tam sim no tau tsim los ua tau cov kev ceev ntawm 1Gbit / s, uas yuav tshaj qhov kev kawm ntawm superfast broadband.

ntaub ntawv teeb

Lub sij hawm Li-Fi yog invented los ntawm cov xibfwb Haraldom Haasom thiab qhia ib txoj kev broadcasting ntaub ntawv siv lub teeb uas enables high-ceev lis-directional mobile sib txuas lus, zoo li Wi-nkaus. Nws yuav siv tau rau unloading ntawm uas twb muaj lawm tes hauj lwm khiav hauj lwm rau lub xov tooj cua frequencies, raws li zoo raws li kom lawv cov peev xwm.

Rau ultra-ceev kev twb kev txuas siv qhov pom ib feem ntawm lub electromagnetic spectrum. Qhov no nyias txawv nyias no technology los ntawm ib tug zoo-tsim daim ntawv ntawm wireless kev sib txuas lus raws li Wi-nkaus, nyob rau hauv ib tug ib txwm zaus muab kev koom tes.

Lub Li-Fi cov ntaub ntawv yog kis tau modulated teeb siv tau txais photodetector thiab hloov dua siab tshiab rau hauv ib qho hluav taws xob lub teeb liab. Tes taws los piav yog ua nyob rau hauv xws li ib tug txoj kev uas tib neeg qhov muag tsis pom nws.

Technology Li-Fi high-ceev kho qhov muag sib txuas lus hais txog rau lub wireless kev sib txuas lus qeb, uas nyob rau hauv tas li ntawd mus pom lub teeb, nrog rau cov infrared thiab ultraviolet. Nws uniqueness lies nyob rau hauv lub siv ntawm cov uas twb teeb pom kev zoo system.

Li Fi - Superfast Internet LED

Thaum ncaj tam sim no yog txhab khoom mus rau LED-teeb, nws emits ib tug kwj khov kho ntawm photons pom lub teeb. Los ntawm kev txo los yog nce kom brightness ntawm qhov tam sim no kuj hloov. Txij li thaum lub LED-teeb yog semiconductor pab kiag li lawm, tam sim no, thiab chaw pib, tus kho qhov muag tso zis yuav tsum modulated ntawm heev kev kub ceev. Nws tej zaum yuav tau txais ib tug photodetector thiab hloov dua siab tshiab rov qab mus rau hauv ib qho hluav taws xob tam sim no. Brightness tes taws los piav yog imperceptible mus rau tib neeg lub qhov muag thiab yog li yooj yim raws li xov tooj cua. Siv cov txheej txheem no, tus LED teeb muaj peev xwm ntawm kis cov lus qhia thaum muaj kev kub ceev.

RF kev sib txuas lus yuav tsum tau circuitry, antennas thiab complex receivers, thaum Li-Fi-technology ntau yooj yim dua. Nws yuav siv ncaj qha tes taws los piav cov hom kev kawm, xws li cov neeg muab kev koom tes nyob rau hauv uas tsis muaj nqi infrared kev sib txuas lus pab kiag li lawm - tej thaj chaw deb ntawm lwm yam uas. Kev siv cov infrared kev sib txuas lus yog tas vim hais tias cov cai ntawm kev noj qab haus huv qauv kev ruaj ntseg qhov muag thaum lub sij hawm LED-teeb muaj lub siab kev siv ntawm cov glow thiab qhia poj ceev.

Lub teeb los yog xov tooj cua?

Li-Fi yuav tig lub teeb rau hauv ib lub wireless nkag point by analogy nrog lub router Wi-nkaus.

Nyob rau hauv cov pa kev sib txuas lus siv xov tooj cua frequencies, tab sis lawv muaj pes tsawg yog heev tsawg. Devices - computers, laptops, printers, ntse TVs, smartphones thiab cov ntsiav tshuaj - yuav tsum sib tw rau bandwidth. Lub rov tshwm sim ntawm ntau thiab ntau yam, siv Wi-nkaus, piv txwv li, tub yees, nyob ua si, koob yees duab, xov tooj ntawm tes, yog ib tug ua ntawm kev ncua thiab txo cov ntaub ntawv tus nqi. Li-Fi-zaus technology siv lub teeb tsis, uas yog 10 000 lub sij hawm ntau tshaj tus xov tooj cua zaus.

Xov tooj cua tsis tsim electromagnetic cuam uas cuam tshuam nrog aircraft seev thiab khoom, tsev kho mob thiab cov uas txaus ntshai nyob rau hauv xws industries li nuclear fais fab, drilling roj thiab cov nkev dej. Li-Fi siv lub teeb, intrinsically kev nyab xeeb thiab tsis tsim electromagnetic cuam.

Xov tooj cua tsis kis tau los ntawm cov phab ntsa thiab ceilings. Lub teeb tsis tau. Qhov no yog qhov txawv ntawm cov ntaub ntawv tiv thaiv Wi-nkaus thiab Li-nkaus. Hacker, sab nraum cov nroj tsuag, tau txuas mus rau lub xov tooj cua sab hauv. Cov ntaub ntawv kis rau Li-nkaus, muaj no tsuas muaj nyob qhov twg lub teeb ci.

Standard Wi-Fi 802.11a / g muab kis tau tus mob speeds mus txog 54 Mbit / s, thiab cov nqi no yuav muab ntau zog mus rau 1 Gbit / s. Lub University of Edinburgh twb mus txog 3 Gb / s nyob rau hauv monochrome. Ib tug tag nrho xim RGB-LED yuav kis mus txog 9 Gbit / s.

Internet ntawm qhov muag Li-Fi

Kev loj hlob ntawm no technology pab rau ib tug ntse nce nyob rau hauv cov kev siv ntawm LEDs rau teeb pom kev zoo hom phiaj.

Li-Fi yog qhov zoo tshaj plaws haum rau video thiab audio downloads, nyob txheej xwm, thiab thiaj li nyob .. Cov kev pab raws qib ua siab xav tau nyob rau hauv lub bandwidth ntawm lub tswv yim raws, tab sis yuav tsum tau ib tug tsawg kawg nkaus ntsaws hwj chim. Yog li, nws tso feem ntau ntawm cov Internet tsheb ntawm cov uas twb xov tooj cua zaus raws, expanding cov possibilities ntawm mobile thiab Wi-nkaus.

Lub teeb Internet Li-Fi yog siv nyob rau hauv ib tug ntau yam ntawm no:

• Zam xov tooj cua frequencies: cellular tes hauj lwm ncov loads yuav txav mus Li-nkaus. Qhov no yog tshwj xeeb tshaj yog zoo rau lub tswv yim sib txuas lus raws qhov twg bottlenecks tshwm sim feem ntau heev.
• Ntse teeb pom kev zoo: tej private los yog public teeb pom kev zoo, xws li txoj kev teeb txawb, yuav siv tau raws li kev nkag ntsiab lus ntawm Li-nkaus, nrog rau cov tib infrastructure, txhais tau tias kev sib txuas lus thiab sensors.
• Mobile kev twb kev txuas: laptops, smartphones, ntsiav tshuaj thiab lwm yam mobile pab kiag li lawm tej zaum yuav tau ncaj qha mus txuas siv Li-nkaus. Taug kev deb qhia zoo heev thiab ib tug muaj kev tiv thaiv kev sib txuas lus.
• Tej ntau lawm: Li-Fi-technology yog ib tug muaj kev ruaj ntseg lwm txoj rau electromagnetic cuam los ntawm xov tooj cua zaus kev sib txuas lus rau tej khoom ua mines, petrochemical nroj tsuag.
• Tshuaj thiab kev kho mob: lub teeb tsis tsim electromagnetic cuam tshuam, thiab thiaj li tsis cuam tshuam nrog kev kho mob khoom, thiab yog tsis raug MRI scanners.
• Aviation: Li-Fi yuav siv tau rau poob phaus, txo lub xov ntev thiab muaj zog yooj nyob rau hauv qhov kev tso kawm ntawm lub rooj zaum ntawm cov khoom hauv lub neeg nrog caij compartment qhov twg lub LED-teeb tau ntsia. lom ze system nyob rau hauv lub Rooj Tswjhwm Saib cov muaj peev xwm tswj thiab nrog mobile pab kiag li lawm ntawm coob uas xam nrog.
• Kev sib txuas lus nyob rau hauv dej: vim lub zog nqus ntawm lub teeb liab zaus siv nyob rau hauv dej yog yus. Acoustic tsis muaj ib tug heev tsawg throughput thiab thab marine tsiaj. Li-Fi-technology muab ib tug tov rau luv luv-ntau kev sib txuas lus.
• Thiab Tsheb thauj mus los: twb ua headlamps, tus Tsov tus tw teeb, txoj kev teeb, tej cim thiab tsheb teeb uas siv LED-teeb. Qhov no enables kev sib txuas lus ntawm cov tsheb thiab cov kev infrastructure nyob rau hauv lub tshuab kev ruaj ntseg thiab tsheb tswj.
• Precision, lub zos ntaub ntawv cov kev pab cuam, xws li advertising thiab navigation, uas tso cai rau yuav tau txais ntaub ntawv txuam nrog ib tug kev qhov chaw thiab lub sij hawm.
• Cov khoom ua si: LEDs yog siv nyob rau hauv ntau cov khoom ua si uas yuav siv tau rau cov uas tsis tau them nqi kev sib txuas lus ntawm kev sib tham sib khoom ua si.

tsab tsim

Li-1 tso cai cov neeg muas zaub rau sai tsim thiab kuaj daim ntawv sau npe Li-nkaus. Tus ntaus ntawv txhawb tag nrho duplex kev sib txuas lus nrog lub peev xwm ntawm 11.5 Mbit / s ntawm ib tug deb ntawm 3 m, thaum muab txaus teeb pom kev zoo nyob rau hauv koj desktop. Ua hauj lwm nyob deb nyob tsuas yog nyob rau lub dag lub zog ntawm lub teeb qhov chaw. Tus ntaus ntawv muaj ib tug yooj yim kev ruaj ntseg wireless kev twb kev txuas mus rau lub network, ua ke nrog LED-teeb.

Li-1 yog tsim los pab raws li ib tug puag rau tsav tej yaam num, Li-Fi developers.

Tus thawj coj mus muag khoom

Li-Nplaim twb laj mej pej xeem pom hais tias nws nyob rau lub Mobile World Congress nyob rau hauv Barcelona nyob rau hauv lub peb hlis ntuj 2016 ntaus ntawv yog cov tiam tom ntej ntawm lub ntiaj teb no tus thawj high-ceev wireless network raws li qhov pom lub teeb. Technology Li-Nplaim txhawb ho muaj dua ntaub ntawv ceev tshaj lub ntsiab zoo tshaj Wi-nkaus, thiab nws txais tau Cov kev ruaj ntseg tshem pliaj intrusion los ntawm sab nraum. Nyob rau hauv tas li ntawd, lub ua ke ntawm lub teeb nrog ib tug wireless kev sib txuas lus infrastructure ho simplifies thiab thiaj li hwj chim noj.

Li-Nplaim muab:

• ib nrab-ob lub tsev sib txuas lus ntawm 10 Mbit / s ntawm ib tug deb ntawm 3 m nrog txheem teeb;
• tag nrho tsiv (portable desktop unit nrog roj teeb) uas muaj cov ntaub ntawv tus nqi vim tuab installation ntawm APS Li-Fi;
• ruaj ntseg wireless kev sib txuas lus nyob rau hauv lub chav tsev, uas eliminates ntawm cov to teeb liab;
• multi-neeg siv taw tes, muab ntau dua bandwidth rau txhua tus neeg siv;
• ruaj ntseg wireless kev sib txuas lus nyob rau hauv tej kev kawm qhov chaw uas mloog xov tooj cua frequencies yog undesirable los yog luv;
• yooj nyob rau hauv lub tsim ntawm kev sib txuas lus tes hauj lwm;
• expanding cov ntau yam ntawm wireless kev sib txuas lus ntaub ntawv sau npe;
• savings nyob rau hauv teeb pom kev zoo thiab sib txuas lus cov khoom vim kev siv ntawm ib tug infrastructure.

Qab nthab tsev:

• Cov ntaub ntawv thiab lub hwj chim yog nkag ntawm ib tug txheej txheem Ethernet-chaw nres nkoj.
• Ib qho yooj yim installation.
• Nws yog kev cob cog rua rau lub LED-teeb, atto-txoj kev hlwb.
• Ntau saib.
• Tus hloov ntawm kev nkag tau mus cov ntsiab lus.

Rooj Unit:

• Kev twb kev txuas mus rau tus neeg ntaus ntawv ntawm USB-chaw nres nkoj.
• 10 Mbit / s uplink mus rau lub infrared feem ntawm lub qab nthab.
• Tig lub taub hau transceiver yuav tau tom los ntawm tus neeg siv.
• Roj teeb lub hwj chim thiab tsiv.

Qhov ceev tshaj plaws, tsawg tshaj plaws thiab feem ntau muaj kev tiv thaiv

LiFi-X yog txoj kev loj hlob ntawm Li-Nplaim system. Nws tso cai rau koj mus rau deploy ib tug tag nrho cov network thiab, tsis zoo li uas twb muaj lawm cov khoom, cov yuav txhawb ntau yam saib, roaming, tag nrho muaj, mus rau tib qho yooj yim mus use. Nws txawv los ntawm lub yav dhau los version ntawm lub tag nrho-ob lub tsev sib txuas lus rau tus ceev ntawm 40 Mbit / s nyob rau hauv ob lub ntsaws thiab lub tswv yim kev coj, thiab ua kom tiav cov kev mus ncig yog muab los ntawm lub portable USB-chaw nres tsheb.

Cov kev nkag tau taw tes LiFi-X:

• Hwj chim tshaj Poe los yog PLC.
• Ib qho yooj yim installation.
• Kev twb kev txuas mus rau lub LED-teeb tsim atto-cell.
• Ntau saib.
• Du switching ntawm kev nkag tau mus cov ntsiab lus.

LiFi-X chaw nres tsheb:

• USB 2.0.

ntaub ntawv

Phau ntawv los ntawm Li-Fi technology, txawm nws muaj novelty, yog tsis yooj yim dua, txawm li cas los, rau qhov cov lawv tsis txhais mus rau hauv Lavxias teb sab. Ntawm no yog ib co ntawm lawv:

• Arnon, Shlomi. Pom lub teeb kev sib txuas lus. Cambridge, United Kingdom: Cambridge University xovxwm Hydraulic, 2015. Sau.
• Dimitrov, Svilen, thiab Harald Haas. Principles of LED teeb sib txuas lus: ntawm networked Li-nkaus. Cambridge: Cambridge University xovxwm Hydraulic, 2015. Sau.
• Ghassemlooy, Zabih, W Popoola, thiab S Rajbhandari. Kho qhov muag wireless kev sib txuas lus system thiab channel modeling nrog MATLAB. Boca Raton, IBCE: CRC xovxwm Hydraulic, 2013. Sau.

Phau ntawv no muaj nyob rau hauv cov khw hauv internet Amazon.