{"id":222,"date":"2021-12-20T23:21:29","date_gmt":"2021-12-20T16:21:29","guid":{"rendered":"https:\/\/nhathongminhcp.com\/?p=222"},"modified":"2021-12-20T23:27:56","modified_gmt":"2021-12-20T16:27:56","slug":"kien-thuc-smart-home","status":"publish","type":"post","link":"https:\/\/nhathongminhcp.com\/index.php\/2021\/12\/20\/kien-thuc-smart-home\/","title":{"rendered":"Ki\u1ebfn th\u1ee9c Smart Home"},"content":{"rendered":"
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Zigbee l\u00e0 g\u00ec, v\u00ec sao nh\u00e0 th\u00f4ng minh s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y?<\/h2>\n<\/header>\n
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\u0110\u1ed3ng b\u1ed9 h\u00f3a t\u1ea5t c\u1ea3 c\u00e1c\u00a0thi\u1ebft b\u1ecb nh\u00e0 th\u00f4ng minh<\/strong>\u00a0l\u00e0 \u0111i\u1ec1u kh\u00f4ng d\u1ec5 d\u00e0ng v\u00e0 n\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u00f4n ng\u1eef chung \u0111\u1ec3 li\u00ean k\u1ebft v\u1edbi v\u00f4 s\u1ed1 c\u00f4ng ngh\u1ec7 t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau. V\u00e0 \u0111\u00f3 l\u00e0 l\u00fac\u00a0 Zigbee tr\u1ed5 t\u00e0i \u2013 m\u1ed9t trong nh\u1eefng giao th\u1ee9c h\u00e0ng \u0111\u1ea7u trong vi\u1ec7c gi\u00fap c\u00f4ng ngh\u1ec7 n\u00f3i chuy\u1ec7n v\u1edbi nhau.<\/p>\n

V\u1eady\u00a0Zigbee l\u00e0 g\u00ec<\/strong> v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o,\u00a0 h\u00e3y c\u00f9ng SmartHome CP\u00a0\u0111i t\u00ecm c\u00e2u tr\u1ea3 l\u1eddi qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, b\u1ea1n nh\u00e9!<\/p>\n

\"S\u00f3ng<\/p>\n

Zigbee l\u00e0 g\u00ec?<\/strong><\/h2>\n

ZigBee l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n m\u1edf to\u00e0n c\u1ea7u cho c\u00f4ng ngh\u1ec7 kh\u00f4ng d\u00e2y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u v\u00f4 tuy\u1ebfn k\u1ef9 thu\u1eadt s\u1ed1 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p cho c\u00e1c m\u1ea1ng khu v\u1ef1c c\u00e1 nh\u00e2n \u2013 PAN (personal area network) \u0111\u01b0\u1ee3c ZigBee Alliance ph\u00e1t tri\u1ec3n v\u00e0o n\u0103m 1998.<\/p>\n

ZigBee ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a IEEE 802.15.4 v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o c\u00e1c m\u1ea1ng y\u00eau c\u1ea7u t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u th\u1ea5p, hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 k\u1ebft n\u1ed1i m\u1ea1ng an to\u00e0n. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng nh\u01b0 h\u1ec7 th\u1ed1ng nh\u00e0 th\u00f4ng minh, h\u1ec7 th\u1ed1ng s\u01b0\u1edfi v\u00e0 l\u00e0m m\u00e1t v\u00e0 trong c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf.<\/p>\n

\u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u radio c\u00f3 t\u1ea7n s\u1ed1 ng\u1eafn v\u00e0 c\u1ea5u tr\u00fac v\u1edbi hai t\u1ea7ng g\u1ed3m t\u1ea7ng v\u1eadt l\u00fd v\u00e0 \u0111\u1ecba ch\u1ec9 MAC gi\u1ed1ng v\u1edbi ti\u00eau chu\u1ea9n 802.15.4. C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u n\u00f4m na Zigbee = ZigZag + Bee, d\u1ea1ng truy\u1ec1n th\u00f4ng ZigZag ki\u1ec3u nh\u01b0 t\u1ed5 ong.<\/p>\n

\"S\u00f3ng<\/p>\n

H\u01a1n n\u1eefa, Zigbee c\u00f2n thi\u1ebft l\u1eadp c\u00e1c t\u1ea7ng kh\u00e1c nh\u1edd th\u1ebf m\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a c\u00e1c h\u00e3ng c\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft ra nhau v\u00e0 t\u1ef1 k\u1ebft n\u1ed1i v\u1edbi nhau d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n

L\u1ee3i \u00edch c\u1ee7a ZigBee l\u00e0 g\u00ec?<\/strong><\/h3>\n

Nh\u1edd v\u00e0o \u0111\u1eb7c \u0111i\u1ec3m truy\u1ec1n t\u1ea3i t\u00edn hi\u1ec7u xa v\u00e0 \u1ed5n \u0111\u1ecbnh n\u00ean Zigbee \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t r\u1ed9ng r\u00e3i trong ng\u00e0nh c\u00f4ng nghi\u1ec7p t\u1ef1 \u0111\u1ed9ng h\u00f3a \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c\u00a0h\u1ec7 th\u1ed1ng nh\u00e0 th\u00f4ng minh<\/strong>. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c \u01b0u \u0111i\u1ec3m khi \u00e1p d\u1ee5ng ZigBee:<\/p>\n

    \n
  • D\u1ec5 d\u00e0ng l\u1eafp \u0111\u1eb7t<\/strong>: Vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u00e1c thi\u1ebft b\u1ecb d\u00f9ng ZigBee r\u1ea5t d\u1ec5 d\u00e0ng<\/li>\n
  • K\u1ebft n\u1ed1i internet<\/strong>: B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111i\u1ec1u khi\u1ec3n c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng qua k\u1ebft n\u1ed1i Internet t\u1eeb b\u1ea5t k\u1ef3 \u0111\u00e2u tr\u00ean th\u1ebf gi\u1edbi. Gi\u00fap \u0111i\u1ec1u khi\u1ec3n nh\u00e0 th\u00f4ng minh d\u1ec5 d\u00e0ng h\u01a1n.<\/li>\n
  • Ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/strong>: ZigBee ti\u00eau t\u1ed1n r\u1ea5t \u00edt n\u0103ng l\u01b0\u1ee3ng cho n\u00ean s\u1ebd gi\u00fap ti\u1ebft ki\u1ec7m \u0111i\u1ec7n t\u1ed1i \u0111a.<\/li>\n
  • Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng c\u1ef1c l\u1edbn<\/strong>: C\u00e1c thi\u1ebft b\u1ecb c\u00f9ng h\u1ec7 th\u1ed1ng s\u1ebd c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi nhau t\u1ea1o n\u00ean 1 v\u00f9ng ph\u1ee7 s\u00f3ng c\u1ef1c l\u1edbn, gi\u00fap c\u00e1c thi\u1ebft b\u1ecb nh\u00e0 th\u00f4ng minh k\u1ebft n\u1ed1i v\u1edbi nhau d\u1ec5 d\u00e0ng.<\/li>\n
  • S\u1eed d\u1ee5ng m\u00e3 h\u00f3a AES-128<\/strong>\u00a0mang \u0111\u1ebfn \u0111\u1ed9 b\u1ea3o m\u1eadt cao<\/li>\n
  • D\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng:\u00a0<\/strong>Zigbee c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng t\u1edbi 65.000 thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n

    Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ZigBee l\u00e0 g\u00ec?<\/strong><\/h3>\n

    M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0ng ZigBee c\u0169ng c\u00f3 m\u1ed9t v\u00e0i nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00ed d\u1ee5 nh\u01b0:<\/p>\n

      \n
    • Kh\u00f4ng th\u1ec3 ph\u1ee7 r\u1ed9ng h\u1ebft to\u00e0n b\u1ed9 nh\u00e0 c\u00f3 di\u1ec7n t\u00edch qu\u00e1 r\u1ed9ng, ch\u00fang ta s\u1ebd c\u1ea7n m\u1ed9t thi\u1ebft b\u1ecb ZigBee Repeater \u0111\u1ec3 t\u0103ng \u0111\u1ed9 ph\u1ee7 s\u00f3ng.<\/li>\n
    • Kh\u00f4ng xuy\u00ean t\u01b0\u1eddng m\u1ea1nh \u0111\u01b0\u1ee3c, n\u1ebfu nh\u00e0 nhi\u1ec1u ph\u00f2ng th\u00ec s\u1ebd b\u1ecb gi\u1ea3m t\u00edn hi\u1ec7u<\/li>\n
    • \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh kh\u00f4ng b\u1eb1ng thi\u1ebft b\u1ecb \u0111i d\u00e2y. Tuy nhi\u00ean \u0111\u00e2y c\u0169ng l\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m chung c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i s\u00f3ng kh\u00e1c.<\/li>\n<\/ul>\n

      Kh\u1ea3 n\u0103ng truy\u1ec1n t\u00edn hi\u1ec7u<\/strong><\/h3>\n

      V\u1edbi c\u00f4ng ngh\u1ec7 Zigbee, t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 truy\u1ec1n xa t\u1ed1i \u0111a 75m t\u00ednh t\u1eeb tr\u1ea1m ph\u00e1t v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t xa h\u01a1n r\u1ea5t nhi\u1ec1u t\u1eeb c\u00e1c n\u00fat ph\u00e1t kh\u00e1c trong c\u00f9ng h\u1ec7 th\u1ed1ng.<\/p>\n

      D\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c truy\u1ec1n theo g\u00f3i, m\u1ed7i g\u00f3i t\u1ed1i \u0111a 128 bytes v\u00e0 cho ph\u00e9p t\u1ea3i xu\u1ed1ng t\u1ed1i \u0111a 104 bytes<\/p>\n

      Ti\u00eau chu\u1ea9n n\u00e0y h\u1ed7 tr\u1ee3 \u0111\u1ecba ch\u1ec9 64bit c\u0169ng nh\u01b0 \u0111\u1ecba ch\u1ec9 ng\u1eafn 16bit. Lo\u1ea1i \u0111\u1ecba ch\u1ec9 64bit ch\u1ec9 x\u00e1c \u0111inh\u00a0\u0111\u01b0\u1ee3c m\u1ed7i thi\u1ebft b\u1ecb c\u00f3 c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t. Khi m\u1ea1ng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, nh\u1eefng \u0111\u1ecba ch\u1ec9 ng\u1eafn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 cho ph\u00e9p h\u01a1n 65000 n\u00fat \u0111\u01b0\u1ee3c li\u00ean k\u1ebft.<\/p>\n

      Ti\u00eau chu\u1ea9n Zigbee v\u00e0 li\u00ean minh Zigbee<\/strong><\/h3>\n

      Ti\u00eau chu\u1ea9n c\u1ee7a Zigbee \u0111\u01b0\u1ee3c b\u1ea3o tr\u1ee3 b\u1edfi m\u1ed9t nh\u00f3m li\u00ean minh Zigbee. Li\u00ean m\u00ecnh n\u00e0y c\u00f3 h\u01a1n 150 th\u00e0nh vi\u00ean v\u00e0 m\u1ed9t trong s\u1ed1 \u0111\u00f3 c\u00f3 \u1ea3nh h\u01b0\u1edfng kh\u00f4ng nh\u1ecf t\u1edbi quy\u1ebft \u0111\u1ecbnh ti\u00eau chu\u1ea9n c\u1ee7a Zigbee nh\u01b0 l\u00e0 Ember, Honeywell, Invensys, Mitsubishi, Motorola, Philips, v\u00e0 Samsung.<\/p>\n

      Li\u00ean minh Zigbee c\u00f3 nhi\u1ec7m v\u1ee5 c\u00e2n nh\u1eafc \u0111\u1ebfn nhu c\u1ea7u c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng, nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3 c\u00f3 th\u1ec3 n\u00e2ng cao ti\u00eau chu\u1ea9n c\u1ee7a Zigbee h\u01a1n.<\/p>\n

      C\u00e1c d\u1ea3i t\u1ea7ng s\u00f3ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Zigbee<\/strong><\/h3>\n

      Zigbee s\u1ebd ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ed9t trong ba t\u1ea7ng s\u00f3ng l\u00e0:<\/p>\n

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      • D\u1ea3i 868 MHz cho khu v\u1ef1c Ch\u00e2u \u00c2u v\u00e0 Nh\u1eadt:<\/strong>\u00a0Trong gi\u1ea3i n\u00e0y ch\u1ec9 c\u00f3 1 k\u00eanh (k\u00eanh s\u1ed1 0) v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n kh\u00e1 th\u1ea5p ch\u1ec9 kho\u1ea3ng 20kb\/s<\/li>\n
      • D\u1ea3i 915MHz \u1edf khu v\u1ef1c B\u1eafc M\u1ef9:\u00a0<\/strong>C\u00f3 10 k\u00eanh t\u00edn hi\u1ec7u v\u1edbi d\u1ea3i t\u1eeb 1-10 v\u00e0 t\u1ed1c \u0111\u1ed9 kho\u1ea3ng 40kb\/s<\/li>\n
      • D\u1ea3i 2.4GHz s\u1ebd \u1edf c\u00e1c n\u01b0\u1edbc c\u00f2n l\u1ea1i:\u00a0<\/strong>C\u00f3 t\u1edbi 16 k\u00eanh t\u00edn hi\u1ec7u t\u1eeb 11-26 v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i r\u1ea5t cao t\u1edbi 250kb\/s<\/li>\n<\/ul>\n
        \"V\u1edbi
        V\u1edbi s\u00f3ng ZigBee, b\u1ea1n c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n thi\u1ebft b\u1ecb t\u1eeb xa d\u1ec5 d\u00e0ng h\u01a1n<\/figcaption><\/figure>\n

        C\u00f4ng ngh\u1ec7 Module c\u0169ng thay \u0111\u1ed5i t\u00f9y theo d\u1ea3i s\u00f3ng s\u1eed d\u1ee5ng v\u00e0 d\u00f9ng c\u00f4ng ngh\u1ec7 tr\u1ea3i ph\u1ed5 r\u1ed9ng (Direct sequence spread spectrum \u2013 DSSS). Tuy nhi\u00ean, Module c\u1ee7a d\u1ea3i 868 v\u00e0 915MHz d\u00f9ng k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf pha nh\u1ecb ph\u00e2n, c\u00f2n d\u1ea3i 2.4GHz th\u00ec l\u1ea1i d\u00f9ng k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf t\u00edn hi\u1ec7u d\u1ecbch pha (Offset quadrature phase shift keying \u2013 O-QPSK).<\/p>\n

        Zigbee c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong khu v\u1ef1c c\u00f3 m\u1eadt \u0111\u1ed9 t\u00edn hi\u1ec7u d\u00e0y \u0111\u1eb7c v\u00e0 c\u00f3 nhi\u1ec1u t\u00edn hi\u1ec7u g\u00e2y nhi\u1ec5u nh\u1edd kh\u1ea3 n\u0103ng \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng, s\u1ef1 ph\u00e1t hi\u1ec7n n\u0103ng l\u01b0\u1ee3ng ti\u1ebfp nh\u1eadn v\u00e0 \u0111\u00e1nh gi\u00e1 k\u00eanh r\u00f5 r\u00e0ng.<\/p>\n

        C\u00f4ng ngh\u1ec7 \u0111a truy c\u1eadp nh\u1eadn bi\u1ebft s\u00f3ng m\u1ea1ng CSMA (Carrier Sense Multiple Access) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u1eddi \u0111i\u1ec3m truy\u1ec1n, v\u00e0 tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng va ch\u1ea1m trong \u0111\u01b0\u1eddng truy\u1ec1n.<\/p>\n

        M\u00f4 h\u00ecnh m\u1ea1ng Zigbee nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h3>\n

        Zigbee c\u00f3 ba d\u1ea1ng h\u00ecnh \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 l\u00e0 d\u1ea1ng h\u00ecnh sao, d\u1ea1ng h\u00ecnh l\u01b0\u1edbi v\u00e0 d\u1ea1ng h\u00ecnh c\u00e2y. M\u1ed7i d\u1ea1ng \u0111\u1ec1u c\u00f3 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang c\u1ee7a m\u00ecnh v\u00e0 s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u00f9y v\u00e0o tr\u01b0\u1eddng h\u1ee3p kh\u00e1c nhau<\/p>\n

        \"S\u01a1
        S\u01a1 \u0111\u1ed3 m\u1ea1ng l\u01b0\u1edbi c\u1ee7a s\u00f3ng ZigBee<\/figcaption><\/figure>\n

         <\/p>\n

          \n
        • V\u1edbi d\u1ea1ng h\u00ecnh sao (Star network)<\/strong>: c\u00e1c n\u00fat con s\u1ebd li\u00ean k\u1ebft v\u1edbi n\u00fat ch\u1ee7 \u1edf v\u1ecb tr\u00ed trung t\u00e2m.<\/li>\n
        • V\u1edbi d\u1ea1ng h\u00ecnh l\u01b0\u1edbi (Mesh network)<\/strong>: M\u1ea1ng n\u00e0y c\u00f3 \u0111\u1ed9 tin c\u1eady cao, m\u1ed7i n\u00fat trong m\u1ea1ng l\u01b0\u1edbi \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng li\u00ean k\u1ebft v\u1edbi c\u00e1c n\u00fat kh\u00e1c, cho ph\u00e9p t\u00edn hi\u1ec7u truy\u1ec1n li\u00ean t\u1ee5c trong m\u1ea1ng v\u00e0 b\u1ec1n v\u1eefng. N\u1ebfu c\u00f3 s\u1ef1 c\u1ea3n tr\u1edf th\u00ec h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 nh\u1ea3y sang n\u00fat kh\u00e1c.<\/li>\n
        • V\u1edbi d\u1ea1ng h\u00ecnh c\u00e2y (Cluster network)<\/strong>: L\u00e0 m\u1ed9t b\u1ea3n m\u1edf r\u1ed9ng c\u1ee7a h\u00ecnh l\u01b0\u1edbi v\u00e0 c\u00f3 th\u1ec3 ph\u1ee7 s\u00f3ng v\u00e0 m\u1edf r\u1ed9ng cao h\u01a1n.<\/li>\n<\/ul>\n

          C\u1ea5u tr\u00fac c\u1ee7a Zigbee l\u00e0 g\u00ec?<\/strong><\/h3>\n

          Ngo\u00e0i 2 t\u1ea7ng v\u1eadt l\u00fd v\u00e0 MAC \u0111\u00e3 n\u00f3i \u1edf tr\u00ean th\u00ec Zigbee c\u00f2n 1 t\u1ea7ng n\u1eefa cho h\u1ec7 th\u1ed1ng bao g\u1ed3m: T\u1ea7ng m\u1ea1ng, t\u1ea7ng h\u1ed7 tr\u1ee3 \u1ee9ng d\u1ee5ng v\u00e0 t\u1ea7ng \u0111\u1ed1i t\u01b0\u1ee3ng thi\u1ebft b\u1ecb (ZDO) v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng \u1ee9ng d\u1ee5ng.<\/p>\n

            \n
          • T\u1ea7ng v\u1eadt l\u00fd<\/strong>:\u00a0 Cung c\u1ea5p 2 d\u1ecbch v\u1ee5 l\u00e0 d\u1ecbch v\u1ee5 qu\u1ea3n l\u00fd v\u00e0 d\u1ecbch v\u1ee5 d\u1eef li\u1ec7u (PHY). T\u1ea7ng n\u00e0y c\u00f3 nhi\u1ec7m v\u1ee5 l\u00e0 k\u00edch ho\u1ea1t\/gi\u1ea3m k\u00edch ho\u1ea1t c\u00e1c b\u1ed9 ph\u1eadn nh\u1eadn s\u00f3ng, ch\u1ecdn k\u00eanh, ph\u00e1t hi\u1ec7n n\u0103ng l\u01b0\u1ee3ng, gi\u1ea3i ph\u00f3ng k\u00eanh truy\u1ec1n, thu v\u00e0 ph\u00e1t g\u00f3i d\u1eef li\u1ec7u trong m\u00f4i tr\u01b0\u1eddng truy\u1ec1n<\/li>\n
          • T\u1ea7ng MAC<\/strong>: T\u1ea7ng n\u00e0y s\u1ebd c\u0169ng c\u1ea5p d\u1ecbch v\u1ee5 d\u1eef li\u1ec7u v\u00e0 d\u1ecbch v\u1ee5 MAC. D\u1ecbch v\u1ee5 d\u1eef li\u1ec7u MAC s\u1ebd qu\u1ea3n l\u00fd vi\u1ec7c thu ph\u00e1t th\u00f4ng qua d\u1ecbch v\u1ee5 d\u1eef li\u1ec7u (PHY). Nhi\u1ec7m v\u1ee5 c\u1ee7a t\u1ea7ng n\u00e0y l\u00e0 \u0111i\u1ec1u ki\u1ec3n truy c\u1eadp k\u00eanh, \u0111i\u1ec1u khi\u1ec3n v\u00e0 gi\u1ea3i ph\u00f3ng k\u1ebft n\u1ed1i.<\/li>\n
          • T\u1ea7n m\u1ea1ng<\/strong>: C\u0169ng cung c\u1ea5p 2 d\u1ecbch v\u1ee5 l\u00e0 m\u1ea1ng v\u00e0 b\u1ea3o m\u1eadt. D\u1ecbch v\u1ee5 m\u1ea1ng s\u1ebd thi\u1ebft l\u1eadp 1 m\u1ea1ng l\u01b0\u1edbi c\u00e1c th\u00e0nh vi\u00ean tham gia ho\u1eb7c lo\u1ea1i b\u1ecf th\u00e0nh vi\u00ean n\u1ebfu \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o m\u1ea1ng kh\u00e1c, g\u1eafn \u0111\u1ecba ch\u1ec9 cho h\u1ec7 th\u1ed1ng m\u1edbi \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, \u0111\u1ed3ng b\u1ed9 t\u00edn hi\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb v\u00e0 \u0111\u1ecbnh tuy\u1ebfn c\u00e1c g\u00f3i tin truy\u1ec1n \u0111i. C\u00f2n d\u1ecbch v\u1ee5 b\u1ea3o m\u1eadt th\u00ec c\u00f3 nhi\u1ec7m v\u1ee5 b\u1ea3o v\u1ec7 t\u1ea7ng MAC, c\u00e1c th\u00f4ng b\u00e1o t\u00edn hi\u1ec7u v\u00e0 khung tin x\u00e1c nh\u1eadn. Gi\u00fap th\u00f4ng tin di chuy\u1ec3n gi\u1eefa c\u00e1c n\u1ed1t m\u1ea1ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o.<\/li>\n
          • T\u1ea7ng \u1ee9ng d\u1ee5ng \u2013 APS:<\/strong>\u00a0Gi\u00fap d\u00f2 t\u00ecm c\u00e1c n\u1ed1t trong v\u00f9ng ph\u1ee7 s\u00f3ng, duy tr\u00ec v\u00e0 k\u1ebft n\u1ed1i th\u00f4ng tin gi\u1eefa c\u00e1c n\u1ed1t m\u1ea1ng. X\u00e1c \u0111\u1ecbnh vai tr\u00f2 c\u1ee7a thi\u1ebft b\u1ecb trong m\u1ea1ng, th\u00e0nh l\u1eadp c\u00e1c m\u1ed1i quan h\u1ec7 c\u0169ng nh\u01b0 l\u00e0 thi\u1ebft l\u1eadp v\u00e0 tr\u1ea3 l\u1eddi c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb.<\/li>\n
          • T\u1ea7ng \u0111\u1ed1i t\u01b0\u1ee3ng thi\u1ebft b\u1ecb \u2013 ZDO:<\/strong>\u00a0c\u00f3 tr\u00e1ch nhi\u1ec7m qu\u1ea3n l\u00fd c\u00e1c thi\u1ebft b\u1ecb, \u0111\u1ecbnh h\u00ecnh t\u1ea7ng h\u1ed7 tr\u1ee3 \u1ee9ng d\u1ee5ng v\u00e0 t\u1ea7ng m\u1ea1ng, cho ph\u00e9p thi\u1ebft b\u1ecb t\u00ecm ki\u1ebfm, qu\u1ea3n l\u00fd c\u00e1c y\u00eau c\u1ea7u v\u00e0 x\u00e1c \u0111\u1ecbnh tr\u1ea1ng th\u00e1i c\u1ee7a thi\u1ebft b\u1ecb.<\/li>\n
          • T\u1ea7ng c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u1ee9ng d\u1ee5ng ng\u01b0\u1eddi d\u00f9ng \u2013 APO<\/strong>: \u0110\u00e2y l\u00e0 t\u1ea7ng m\u00e0 b\u1ea1n s\u1ebd ti\u1ebfp x\u00fac v\u1edbi c\u00e1c thi\u1ebft b\u1ecb v\u00e0 th\u00eam thi\u1ebft b\u1ecb v\u00e0o m\u1ea1ng n\u1ebfu c\u1ea7n.<\/li>\n<\/ul>\n

            Th\u00e0nh ph\u1ea7n trong m\u1ea1ng ZigBee<\/strong><\/h3>\n

            Trong c\u00e1c m\u1ea1ng Zigbee c\u01a1 b\u1ea3n s\u1ebd c\u00f3 3 lo\u1ea1i thi\u1ebft b\u1ecb l\u00e0<\/p>\n

              \n
            • Zigbee Coordinator (ZC)<\/strong>: \u0110\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 thi\u1ebft b\u1ecb g\u1ed1c c\u00f3 nhi\u1ec7m v\u1ee5 quy\u1ebft \u0111\u1ecbnh k\u1ebft c\u1ea5u m\u1ea1ng, quy \u0111inh c\u00e1ch \u0111\u00e1nh \u0111\u1ecba ch\u1ec9 v\u00e0 l\u01b0u tr\u1eef b\u1ea3ng \u0111\u1ecba ch\u1ec9. M\u1ed7i mang ch\u1ec9 c\u00f3 duy nh\u1ea5t m\u1ed9t ZC v\u00e0 n\u00f3 c\u0169ng l\u00e0 thi\u1ebft b\u1ecb duy nh\u1ea5t \u201cn\u00f3i chuy\u1ec7n\u201d \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c m\u1ea1ng kh\u00e1c.<\/li>\n
            • Zigbee Router (ZR)<\/strong>: Thi\u1ebft b\u1ecb n\u00e0y s\u1ebd c\u00f3 nhi\u1ec7m v\u1ee5 \u0111\u1ecbnh tuy\u1ebfn trung gian trong vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u, n\u00f3 s\u1ebd t\u1ef1 ph\u00e1t hi\u1ec7n v\u00e0 l\u1eadp b\u1ea3n \u0111\u1ed3 c\u00e1c n\u00fat xung quanh c\u0169ng nh\u01b0 l\u00e0 theo d\u00f5i v\u00e0 \u0111i\u1ec1u khi\u1ec3n c\u00e1c n\u00fat ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/li>\n
            • Zigbee End Device (ZED)<\/strong>: G\u1ecdi l\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec3m cu\u1ed1i v\u00e0 n\u00f3 s\u1ebd giao ti\u1ebfp v\u1edbi ZC v\u00e0 ZR \u1edf g\u1ea7n n\u00f3 nh\u1ea5t. Ch\u00fang c\u00f3 nhi\u1ec7m v\u1ee5 \u0111\u1ecdc th\u00f4ng tin t\u1eeb c\u00e1c th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd, ch\u00fang th\u01b0\u1eddng \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9 v\u00e0 ch\u1ec9 l\u00e0m vi\u1ec7c khi c\u1ea7n chuy\u1ec3n ho\u1eb7c nh\u1eadn th\u00f4ng \u0111i\u1ec7p n\u00e0o \u0111\u00f3.<\/li>\n<\/ul>\n

              T\u00f3m l\u1ea1i<\/strong><\/h3>\n

              ZigBee l\u00e0 m\u1ed9t d\u1ea1ng k\u1ebft n\u1ed1i r\u1ea5t m\u1ea1nh m\u1ebd v\u00e0 linh ho\u1ea1t, v\u1edbi kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i nhi\u1ec1u thi\u1ebft b\u1ecb, ch\u1ed1ng nhi\u1ec5u t\u1ed1t v\u00e0 t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng 1 m\u1ea1ng ho\u00e0n h\u1ea3o n\u00ean \u0111\u00e2y s\u1ebd v\u1eabn l\u00e0 1 lo\u1ea1i k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong th\u1eddi gian t\u1edbi c\u0169ng nh\u01b0 c\u00e1c gi\u1ea3i ph\u00e1p nh\u00e0 th\u00f4ng minh trong t\u01b0\u01a1ng lai.<\/p>\n

              Hi v\u1ecdng b\u00e0i vi\u1ebft \u0111\u00e3 gi\u00fap b\u1ea1n hi\u1ec3u h\u01a1n\u00a0ZigBee l\u00e0 g\u00ec<\/strong>, h\u1eb9n g\u1eb7p l\u1ea1i b\u1ea1n \u1edf c\u00e1c b\u00e0i vi\u1ebft sau.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

              Zigbee l\u00e0 g\u00ec, v\u00ec sao nh\u00e0 th\u00f4ng minh s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y? \u0110\u1ed3ng b\u1ed9 h\u00f3a t\u1ea5t c\u1ea3 c\u00e1c\u00a0thi\u1ebft b\u1ecb nh\u00e0 th\u00f4ng minh\u00a0l\u00e0 \u0111i\u1ec1u kh\u00f4ng d\u1ec5 d\u00e0ng v\u00e0 n\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u00f4n ng\u1eef chung \u0111\u1ec3 li\u00ean k\u1ebft v\u1edbi v\u00f4 s\u1ed1 c\u00f4ng ngh\u1ec7 t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau. V\u00e0 \u0111\u00f3 l\u00e0 l\u00fac\u00a0 Zigbee […]\n","protected":false},"author":1,"featured_media":225,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,3],"tags":[],"yst_prominent_words":[],"class_list":["post-222","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-kien-thuc-smarthome"],"_links":{"self":[{"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/posts\/222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/comments?post=222"}],"version-history":[{"count":2,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/posts\/222\/revisions"}],"predecessor-version":[{"id":224,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/posts\/222\/revisions\/224"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/media\/225"}],"wp:attachment":[{"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/media?parent=222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/categories?post=222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/tags?post=222"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/nhathongminhcp.com\/index.php\/wp-json\/wp\/v2\/yst_prominent_words?post=222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}