{"id":48609,"date":"2025-01-09T10:48:34","date_gmt":"2025-01-09T10:48:34","guid":{"rendered":"https:\/\/tesla-lighting.cz\/?p=48609"},"modified":"2025-01-13T10:56:44","modified_gmt":"2025-01-13T10:56:44","slug":"teslabikar-25-dil-li-fi-kdyz-svetlo-prenasi-data","status":"publish","type":"post","link":"https:\/\/tesla-lighting.cz\/en\/teslabikar-25-dil-li-fi-kdyz-svetlo-prenasi-data\/","title":{"rendered":"TESLAbik\u00e1\u0159 25. d\u00edl \u2013 Li-fi: kdy\u017e sv\u011btlo p\u0159en\u00e1\u0161\u00ed data\u200b"},"content":{"rendered":"
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TESLAbik\u00e1\u0159 25. d\u00edl - Li-fi: kdy\u017e sv\u011btlo p\u0159en\u00e1\u0161\u00ed data<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Jak pomoc\u00ed \u017e\u00e1rovky po\u0161lete t\u0159eba tajnou \u0161ifru?<\/a><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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P\u0159edstavte si, \u017ee va\u0161e stropn\u00ed sv\u011btlo nejen osv\u011btluje m\u00edstnost, ale z\u00e1rove\u0148 p\u0159en\u00e1\u0161\u00ed data rychlost\u00ed p\u0159evy\u0161uj\u00edc\u00ed b\u011b\u017en\u00e9 Wi-Fi p\u0159ipojen\u00ed. P\u0159esn\u011b to umo\u017e\u0148uje technologie LiFi (Light Fidelity), kterou v roce 2011 p\u0159edstavil profesor Harald Haas na konferenci TED.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Co je LiFi?<\/h3><\/div><\/div>

LiFi je technologie vyu\u017e\u00edvaj\u00edc\u00ed viditeln\u00e9 sv\u011btlo k p\u0159enosu dat. Funguje na principu velmi rychl\u00e9ho blik\u00e1n\u00ed LED diod (tak rychl\u00e9ho, \u017ee ho lidsk\u00e9 oko nezachyt\u00ed), kter\u00e9 vytv\u00e1\u0159\u00ed bin\u00e1rn\u00ed k\u00f3d \u2013 podobn\u011b jako Morseova abeceda, ale nesrovnateln\u011b rychleji. Zat\u00edmco b\u011b\u017en\u00e9 Wi-Fi pou\u017e\u00edv\u00e1 r\u00e1diov\u00e9 vlny, LiFi pracuje s viditeln\u00fdm sv\u011bteln\u00fdm spektrem.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Sch\u00e9ma p\u0159ipojen\u00ed k internetu pomoc\u00ed LiFi<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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V\u00fdhody LiFi<\/h3><\/div><\/div>
  1. Bezpe\u010dnost<\/strong>: Sv\u011btlo neproch\u00e1z\u00ed zdmi, data tedy z\u016fst\u00e1vaj\u00ed v m\u00edstnosti<\/li>
  2. Rychlost<\/strong>: Teoretick\u00e1 rychlost a\u017e 224 Gb\/s (v\u00fdrazn\u011b rychlej\u0161\u00ed ne\u017e b\u011b\u017en\u00e9 Wi-Fi)<\/li>
  3. \u017d\u00e1dn\u00e9 ru\u0161en\u00ed<\/strong>: Neinterferuje s r\u00e1diov\u00fdmi vlnami, ide\u00e1ln\u00ed pro nemocnice \u010di letadla<\/li>
  4. V\u0161udyp\u0159\u00edtomnost<\/strong>: Vyu\u017e\u00edv\u00e1 existuj\u00edc\u00ed sv\u011btelnou infrastrukturu<\/li>
  5. Ekologie<\/strong>: Ni\u017e\u0161\u00ed energetick\u00e1 n\u00e1ro\u010dnost ne\u017e u Wi-Fi<\/li><\/ol>

    Nev\u00fdhody a omezen\u00ed<\/h3>
    • Vy\u017eaduje p\u0159\u00edmou viditelnost mezi vys\u00edla\u010dem a p\u0159ij\u00edma\u010dem<\/li>
    • Nefunguje p\u0159i vypnut\u00e9m sv\u011btle (lze \u0159e\u0161it infra\u010derven\u00fdm sv\u011btlem)<\/li>
    • Zat\u00edm vy\u0161\u0161\u00ed po\u0159izovac\u00ed n\u00e1klady<\/li>
    • Omezen\u00fd dosah sign\u00e1lu<\/li><\/ul>

      Praktick\u00e9 vyu\u017eit\u00ed<\/h3>

      LiFi nach\u00e1z\u00ed uplatn\u011bn\u00ed p\u0159edev\u0161\u00edm v prost\u0159ed\u00edch, kde je Wi-Fi nevhodn\u00e9 nebo zak\u00e1zan\u00e9, \u010di je pot\u0159eba maxim\u00e1ln\u00ed bezpe\u010d\u00ed dat:<\/p>

      • Nemocnice a zdravotnick\u00e1 za\u0159\u00edzen\u00ed<\/li>
      • Letadla a leteck\u00fd pr\u016fmysl<\/li>
      • Pr\u016fmyslov\u00e9 z\u00e1vody s citliv\u00fdmi p\u0159\u00edstroji<\/li>
      • Vojensk\u00e9 aplikace vy\u017eaduj\u00edc\u00ed vysokou bezpe\u010dnost<\/li>
      • Podmo\u0159sk\u00e9 komunikace (sv\u011btlo se ve vod\u011b \u0161\u00ed\u0159\u00ed l\u00e9pe ne\u017e r\u00e1diov\u00e9 vlny)<\/li><\/ul>

        Srovn\u00e1n\u00ed s Wi-Fi<\/h3>
        Parametr<\/th>LiFi<\/th>Wi-Fi<\/th><\/tr><\/thead>
        Rychlost<\/td>a\u017e 224 Gb\/s<\/td>b\u011b\u017en\u011b <1 Gb\/s<\/td><\/tr>
        Bezpe\u010dnost<\/td>Velmi vysok\u00e1<\/td>Standartn\u00ed<\/td><\/tr>
        Dosah<\/td>cca 10 metr\u016f<\/td>30+ metr\u016f<\/td><\/tr>
        Propustnost zdmi<\/td>Ne<\/td>Ano<\/td><\/tr>
        Ru\u0161en\u00ed vlnami<\/td>Minim\u00e1ln\u00ed<\/td>Pr\u016fm\u011brn\u00e9<\/td><\/tr><\/tbody><\/table>

        Budoucnost technologie<\/h3>

        LiFi m\u00e1 potenci\u00e1l revolu\u010dn\u011b zm\u011bnit zp\u016fsob, jak\u00fdm p\u0159istupujeme k bezdr\u00e1tov\u00e9 komunikaci. S rostouc\u00edm po\u010dtem p\u0159ipojen\u00fdch za\u0159\u00edzen\u00ed a zvy\u0161uj\u00edc\u00edmi se n\u00e1roky na rychlost a bezpe\u010dnost p\u0159enosu dat m\u016f\u017ee b\u00fdt LiFi kl\u00ed\u010dovou technologi\u00ed budoucnosti. Ji\u017e dnes existuj\u00ed pilotn\u00ed projekty v kancel\u00e1\u0159sk\u00fdch budov\u00e1ch, \u0161kol\u00e1ch a nemocnic\u00edch, kter\u00e9 ukazuj\u00ed praktick\u00e9 vyu\u017eit\u00ed t\u00e9to inovativn\u00ed technologie.<\/p>

        I kdy\u017e LiFi pravd\u011bpodobn\u011b zcela nenahrad\u00ed Wi-Fi, m\u016f\u017ee slou\u017eit jako jej\u00ed v\u00fdborn\u00fd dopln\u011bk, zejm\u00e9na v prost\u0159ed\u00edch vy\u017eaduj\u00edc\u00edch vysokou bezpe\u010dnost nebo tam, kde je r\u00e1diov\u00e1 komunikace problematick\u00e1.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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        TESLAbik\u00e1\u0159<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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        \n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

        TESLAbik\u00e1\u0159 25. d\u00edl – Li-fi: kdy\u017e sv\u011btlo p\u0159en\u00e1\u0161\u00ed data Jak pomoc\u00ed \u017e\u00e1rovky po\u0161lete t\u0159eba tajnou \u0161ifru? P\u0159edstavte si, \u017ee va\u0161e stropn\u00ed sv\u011btlo nejen osv\u011btluje m\u00edstnost, ale z\u00e1rove\u0148 p\u0159en\u00e1\u0161\u00ed data rychlost\u00ed p\u0159evy\u0161uj\u00edc\u00ed b\u011b\u017en\u00e9 Wi-Fi p\u0159ipojen\u00ed. P\u0159esn\u011b to umo\u017e\u0148uje technologie LiFi (Light Fidelity), kterou v roce 2011 p\u0159edstavil profesor Harald Haas na konferenci TED. Co je LiFi? […]<\/p>\n","protected":false},"author":17,"featured_media":48632,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-48609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novinky"],"yoast_head":"\nTESLAbik\u00e1\u0159 25. d\u00edl \u2013 Li-fi: kdy\u017e sv\u011btlo p\u0159en\u00e1\u0161\u00ed data\u200b<\/title>\n<meta name=\"description\" content=\"Sv\u011btlo hraje v lidsk\u00e9m \u017eivot\u011b nezastupitelnou roli od nepam\u011bti. 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