{"id":11209,"date":"2026-04-09T06:07:25","date_gmt":"2026-04-08T22:07:25","guid":{"rendered":"https:\/\/www.archimetric.com\/vn\/uml-state-machine-iot-sensor-guide\/"},"modified":"2026-04-09T06:07:25","modified_gmt":"2026-04-08T22:07:25","slug":"uml-state-machine-iot-sensor-guide","status":"publish","type":"post","link":"https:\/\/www.archimetric.com\/vn\/uml-state-machine-iot-sensor-guide\/","title":{"rendered":"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i \u0111\u00e1ng tin c\u1eady cho m\u1ed9t c\u1ea3m bi\u1ebfn nh\u00e0 th\u00f4ng minh IoT \u0111\u01a1n gi\u1ea3n"},"content":{"rendered":"<p>Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang cho Internet v\u1ea1n v\u1eadt \u0111\u00f2i h\u1ecfi h\u01a1n c\u1ea3 vi\u1ec7c n\u1ed1i d\u00e2y v\u00e0 vi\u1ebft m\u00e3. N\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u r\u00f5 v\u1ec1 lu\u1ed3ng logic v\u00e0 h\u00e0nh vi h\u1ec7 th\u1ed1ng. M\u1ed9t <strong>S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i UML<\/strong>ph\u1ee5c v\u1ee5 nh\u01b0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf cho logic n\u00e0y. Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang ta kh\u00e1m ph\u00e1 quy tr\u00ecnh thi\u1ebft k\u1ebf cho m\u1ed9t c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m nh\u00e0 th\u00f4ng minh. Ch\u00fang ta t\u1eadp trung v\u00e0o \u0111\u1ed9 tin c\u1eady, hi\u1ec7u su\u1ea5t ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00e1c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i r\u00f5 r\u00e0ng m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 th\u01b0\u01a1ng m\u1ea1i c\u1ee5 th\u1ec3.<\/p>\n<p>\ud83d\udce1 <strong>T\u1ea1i sao M\u00e1y tr\u1ea1ng th\u00e1i l\u1ea1i quan tr\u1ecdng trong IoT<\/strong><\/p>\n<p>C\u00e1c thi\u1ebft b\u1ecb IoT ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c. K\u1ebft n\u1ed1i m\u1ea1ng thay \u0111\u1ed5i li\u00ean t\u1ee5c, ngu\u1ed3n \u0111i\u1ec7n kh\u00e1c nhau, v\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t b\u00ean ngo\u00e0i l\u00e0 b\u1ea5t \u0111\u1ed3ng b\u1ed9. M\u1ed9t \u0111o\u1ea1n m\u00e3 tuy\u1ebfn t\u00ednh kh\u00f4ng th\u1ec3 x\u1eed l\u00fd nh\u1eefng ph\u1ee9c t\u1ea1p n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. M\u00e1y tr\u1ea1ng th\u00e1i cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 qu\u1ea3n l\u00fd h\u00e0nh vi h\u1ec7 th\u1ed1ng.<\/p>\n<ul>\n<li><strong>D\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c:<\/strong>M\u1ecdi h\u00e0nh \u0111\u1ed9ng \u0111\u1ec1u li\u00ean k\u1ebft v\u1edbi m\u1ed9t tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3 v\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n.<\/li>\n<li><strong>\u0110\u1ed9 b\u1ec1n:<\/strong>C\u00e1c \u0111\u1ea7u v\u00e0o kh\u00f4ng h\u1ee3p l\u1ec7 \u0111\u01b0\u1ee3c x\u1eed l\u00fd r\u00f5 r\u00e0ng th\u00f4ng qua c\u00e1c tr\u1ea1ng th\u00e1i l\u1ed7i.<\/li>\n<li><strong>D\u1ec5 b\u1ea3o tr\u00ec:<\/strong>S\u1ef1 thay \u0111\u1ed5i trong logic \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n \u1edf c\u00e1c chuy\u1ec3n ti\u1ebfp c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn, tu\u1ed5i th\u1ecd pin th\u01b0\u1eddng l\u00e0 gi\u1edbi h\u1ea1n ch\u00ednh. M\u00e1y tr\u1ea1ng th\u00e1i x\u00e1c \u0111\u1ecbnh khi n\u00e0o radio ng\u1ee7 v\u00e0 khi n\u00e0o th\u1ee9c d\u1eady. Quy tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh n\u00e0y ph\u1ea3i ch\u00ednh x\u00e1c.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Chalkboard-style infographic illustrating a UML state machine diagram for an IoT smart home temperature and humidity sensor, showing six key states (Power-On, Idle\/Sleep, Measurement, Connect, Transmit, Error) with hand-drawn transitions, guard conditions, entry\/exit actions, power consumption estimates, and UML notation legend in a teacher-friendly handwritten chalk aesthetic on a 16:9 widescreen layout\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2026\/04\/iot-smart-home-sensor-state-machine-diagram-chalkboard-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udd0d X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi h\u1ec7 th\u1ed1ng<\/h2>\n<p>Tr\u01b0\u1edbc khi v\u1ebd s\u01a1 \u0111\u1ed3, ch\u00fang ta x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng. Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p n\u00e0y t\u1eadp trung v\u00e0o m\u1ed9t n\u00fat c\u1ea3m bi\u1ebfn \u0111\u1ed9c l\u1eadp. N\u00f3 kh\u00f4ng y\u00eau c\u1ea7u x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng ph\u1ee9c t\u1ea1p hay ghi d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u00e1m m\u00e2y. Nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 thu th\u1eadp v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<p><strong>C\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh:<\/strong><\/p>\n<ul>\n<li>\u0110\u1ecdc d\u1eef li\u1ec7u c\u1ea3m bi\u1ebfn (Nhi\u1ec7t \u0111\u1ed9, \u0110\u1ed9 \u1ea9m).<\/li>\n<li>K\u1ebft n\u1ed1i v\u1edbi m\u1ed9t c\u1ed5ng giao ti\u1ebfp \u0111\u1ecba ph\u01b0\u01a1ng.<\/li>\n<li>Truy\u1ec1n c\u00e1c g\u00f3i d\u1eef li\u1ec7u.<\/li>\n<li>Chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p \u0111\u1ec3 ti\u1ebft ki\u1ec7m pin.<\/li>\n<li>X\u1eed l\u00fd l\u1ed7i truy\u1ec1n th\u00f4ng m\u1ed9t c\u00e1ch tr\u01a1n tru.<\/li>\n<\/ul>\n<h2>\u2699\ufe0f X\u00e1c \u0111\u1ecbnh c\u00e1c tr\u1ea1ng th\u00e1i<\/h2>\n<p>N\u1ec1n t\u1ea3ng c\u1ee7a s\u01a1 \u0111\u1ed3 l\u00e0 danh s\u00e1ch tr\u1ea1ng th\u00e1i. M\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n trong \u0111\u00f3 h\u1ec7 th\u1ed1ng th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng c\u1ee5 th\u1ec3 ho\u1eb7c ch\u1edd \u0111\u1ee3i c\u00e1c s\u1ef1 ki\u1ec7n. \u0110\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn n\u00e0y, ch\u00fang ta x\u00e1c \u0111\u1ecbnh c\u00e1c tr\u1ea1ng th\u00e1i ri\u00eang bi\u1ec7t sau \u0111\u00e2y.<\/p>\n<h3>1. Tr\u1ea1ng th\u00e1i B\u1eadt ngu\u1ed3n (Ban \u0111\u1ea7u)<\/h3>\n<p>\u0110\u00e2y l\u00e0 \u0111i\u1ec3m v\u00e0o. H\u1ec7 th\u1ed1ng th\u1ef1c hi\u1ec7n ki\u1ec3m tra ph\u1ea7n c\u1ee9ng. N\u00f3 x\u00e1c minh t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a vi \u0111i\u1ec1u khi\u1ec3n v\u00e0 m\u00f4-\u0111un c\u1ea3m bi\u1ebfn.<\/p>\n<ul>\n<li><strong>H\u00e0nh \u0111\u1ed9ng v\u00e0o:<\/strong>Kh\u1edfi t\u1ea1o c\u00e1c ch\u00e2n GPIO.<\/li>\n<li><strong>H\u00e0nh \u0111\u1ed9ng tho\u00e1t:<\/strong>T\u1ea3i c\u1ea5u h\u00ecnh t\u1eeb b\u1ed9 nh\u1edb kh\u00f4ng m\u1ea5t m\u00e1t.<\/li>\n<\/ul>\n<h3>2. Tr\u1ea1ng th\u00e1i ch\u1edd \/ ng\u1ee7<\/h3>\n<p>Khi thi\u1ebft b\u1ecb kh\u00f4ng thu th\u1eadp ho\u1eb7c g\u1eedi d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch ch\u1ee7 \u0111\u1ed9ng, n\u00f3 ph\u1ea3i ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. \u0110\u00e2y l\u00e0 tr\u1ea1ng th\u00e1i ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng pin.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t s\u1ef1 ki\u1ec7n:<\/strong>H\u1ebft th\u1eddi gian h\u1eb9n gi\u1edd (v\u00ed d\u1ee5: m\u1ed7i 5 ph\u00fat).<\/li>\n<li><strong>Th\u1eddi l\u01b0\u1ee3ng:<\/strong>Thay \u0111\u1ed5i t\u00f9y theo c\u1ea5u h\u00ecnh.<\/li>\n<\/ul>\n<h3>3. Tr\u1ea1ng th\u00e1i \u0111o l\u01b0\u1eddng<\/h3>\n<p>C\u1ea3m bi\u1ebfn th\u1ee9c d\u1eady \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u v\u1eadt l\u00fd. Tr\u1ea1ng th\u00e1i n\u00e0y k\u00edch ho\u1ea1t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1-s\u1ed1 (ADC).<\/p>\n<ul>\n<li><strong>H\u00e0nh \u0111\u1ed9ng v\u00e0o:<\/strong>K\u00edch ho\u1ea1t m\u00f4-\u0111un c\u1ea3m bi\u1ebfn.<\/li>\n<li><strong>X\u1eed l\u00fd:<\/strong>\u0110\u1ecdc c\u00e1c gi\u00e1 tr\u1ecb th\u00f4, \u00e1p d\u1ee5ng \u0111\u1ed9 l\u1ec7ch hi\u1ec7u chu\u1ea9n.<\/li>\n<li><strong>H\u00e0nh \u0111\u1ed9ng tho\u00e1t:<\/strong>T\u1eaft m\u00f4-\u0111un c\u1ea3m bi\u1ebfn \u0111\u1ec3 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/li>\n<\/ul>\n<h3>4. Tr\u1ea1ng th\u00e1i k\u1ebft n\u1ed1i<\/h3>\n<p>Khi d\u1eef li\u1ec7u s\u1eb5n s\u00e0ng, thi\u1ebft b\u1ecb s\u1ebd c\u1ed1 g\u1eafng k\u1ebft n\u1ed1i v\u1edbi c\u1ed5ng th\u00f4ng tin. Tr\u1ea1ng th\u00e1i n\u00e0y x\u1eed l\u00fd kh\u1edfi t\u1ea1o radio v\u00e0 giao th\u1ee9c trao \u0111\u1ed5i.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t s\u1ef1 ki\u1ec7n:<\/strong>C\u1edd d\u1eef li\u1ec7u s\u1eb5n s\u00e0ng.<\/li>\n<li><strong>H\u1ea1n ch\u1ebf th\u1eddi gian:<\/strong>Quan tr\u1ecdng. N\u1ebfu c\u1ed5ng th\u00f4ng tin kh\u00f4ng th\u1ec3 truy c\u1eadp, h\u1ec7 th\u1ed1ng kh\u00f4ng \u0111\u01b0\u1ee3c treo.<\/li>\n<\/ul>\n<h3>5. Tr\u1ea1ng th\u00e1i truy\u1ec1n<\/h3>\n<p>D\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c g\u1eedi qua giao di\u1ec7n m\u1ea1ng.<\/p>\n<ul>\n<li><strong>H\u00e0nh \u0111\u1ed9ng v\u00e0o:<\/strong>\u0110\u1ecbnh d\u1ea1ng g\u00f3i tin, th\u00eam ki\u1ec3m tra t\u1ed5ng.<\/li>\n<li><strong>H\u00e0nh \u0111\u1ed9ng tho\u00e1t:<\/strong>X\u00f3a b\u1ed9 \u0111\u1ec7m truy\u1ec1n.<\/li>\n<\/ul>\n<h3>6. Tr\u1ea1ng th\u00e1i l\u1ed7i<\/h3>\n<p>N\u1ebfu x\u1ea3y ra s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng (v\u00ed d\u1ee5: l\u1ed7i \u0111\u1ecdc c\u1ea3m bi\u1ebfn, h\u1ebft th\u1eddi gian m\u1ea1ng), h\u1ec7 th\u1ed1ng s\u1ebd chuy\u1ec3n sang tr\u1ea1ng th\u00e1i n\u00e0y. N\u00f3 ghi l\u1ea1i l\u1ed7i v\u00e0 c\u1ed1 g\u1eafng th\u1ef1c hi\u1ec7n chu\u1ed7i kh\u00f4i ph\u1ee5c.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t s\u1ef1 ki\u1ec7n:<\/strong>B\u1ed9 x\u1eed l\u00fd ngo\u1ea1i l\u1ec7.<\/li>\n<li><strong>Ph\u1ee5c h\u1ed3i:<\/strong>Logic th\u1eed l\u1ea1i ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/li>\n<\/ul>\n<h2>\ud83d\udd04 \u0110\u1ecbnh ngh\u0129a c\u00e1c chuy\u1ec3n ti\u1ebfp v\u00e0 s\u1ef1 ki\u1ec7n<\/h2>\n<p>C\u00e1c chuy\u1ec3n ti\u1ebfp \u0111\u1ecbnh ngh\u0129a c\u00e1ch h\u1ec7 th\u1ed1ng di chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c. Ch\u00fang \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi c\u00e1c \u0111i\u1ec1u ki\u1ec7n. Trong UML, nh\u1eefng \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i.<\/p>\n<p><strong>C\u00e1c \u0111\u01b0\u1eddng chuy\u1ec3n ti\u1ebfp ch\u00ednh:<\/strong><\/p>\n<ul>\n<li><strong>Ng\u01b0ng \u2192 \u0110o l\u01b0\u1eddng:<\/strong>K\u00edch ho\u1ea1t b\u1edfi b\u1ed9 \u0111\u1ebfm th\u1eddi gian \u0111\u1ecbnh k\u1ef3. \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7: M\u1ee9c pin &gt; 10%.<\/li>\n<li><strong>\u0110o l\u01b0\u1eddng \u2192 K\u1ebft n\u1ed1i:<\/strong>K\u00edch ho\u1ea1t khi thu th\u1eadp d\u1eef li\u1ec7u ho\u00e0n t\u1ea5t.<\/li>\n<li><strong>K\u1ebft n\u1ed1i \u2192 Truy\u1ec1n t\u1ea3i:<\/strong>K\u00edch ho\u1ea1t b\u1edfi thao t\u00e1c thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i m\u1ea1ng th\u00e0nh c\u00f4ng.<\/li>\n<li><strong>K\u1ebft n\u1ed1i \u2192 L\u1ed7i:<\/strong>K\u00edch ho\u1ea1t b\u1edfi h\u1ebft th\u1eddi gian ch\u1edd m\u1ea1ng.<\/li>\n<li><strong>Truy\u1ec1n t\u1ea3i \u2192 Ng\u01b0ng:<\/strong>K\u00edch ho\u1ea1t khi nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn ho\u1eb7c truy\u1ec1n t\u1ea3i ho\u00e0n t\u1ea5t.<\/li>\n<li><strong>B\u1ea5t k\u1ef3 tr\u1ea1ng th\u00e1i n\u00e0o \u2192 B\u1eadt ngu\u1ed3n:<\/strong>K\u00edch ho\u1ea1t b\u1edfi kh\u1edfi \u0111\u1ed9ng l\u1ea1i ph\u1ea7n c\u1ee9ng.<\/li>\n<\/ul>\n<p><strong>\u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 v\u00e0 H\u00e0nh \u0111\u1ed9ng:<\/strong><\/p>\n<p>C\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t chuy\u1ec3n ti\u1ebfp ch\u1ec9 x\u1ea3y ra n\u1ebfu c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng. V\u00ed d\u1ee5, thi\u1ebft b\u1ecb kh\u00f4ng n\u00ean truy\u1ec1n t\u1ea3i n\u1ebfu pin \u0111ang \u1edf m\u1ee9c r\u1ea5t th\u1ea5p.<\/p>\n<table>\n<thead>\n<tr>\n<th>Tr\u1ea1ng th\u00e1i ngu\u1ed3n<\/th>\n<th>S\u1ef1 ki\u1ec7n<\/th>\n<th>\u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/th>\n<th>Tr\u1ea1ng th\u00e1i \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ng\u01b0ng<\/td>\n<td>H\u1ebft th\u1eddi gian b\u1ed9 \u0111\u1ebfm<\/td>\n<td>Pin &gt; 15%<\/td>\n<td>\u0110o l\u01b0\u1eddng<\/td>\n<\/tr>\n<tr>\n<td>K\u1ebft n\u1ed1i<\/td>\n<td>H\u1ebft th\u1eddi gian ch\u1edd<\/td>\n<td>S\u1ed1 l\u1ea7n th\u1eed l\u1ea1i &lt; 3<\/td>\n<td>K\u1ebft n\u1ed1i<\/td>\n<\/tr>\n<tr>\n<td>K\u1ebft n\u1ed1i<\/td>\n<td>H\u1ebft th\u1eddi gian<\/td>\n<td>S\u1ed1 l\u1ea7n th\u1eed l\u1ea1i = 3<\/td>\n<td>L\u1ed7i<\/td>\n<\/tr>\n<tr>\n<td>G\u1eedi<\/td>\n<td>\u0110\u00e3 nh\u1eadn ACK<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110ang ch\u1edd<\/td>\n<\/tr>\n<tr>\n<td>\u0110o l\u01b0\u1eddng<\/td>\n<td>C\u1ea3m bi\u1ebfn l\u1ed7i<\/td>\n<td>\u0110\u00fang<\/td>\n<td>L\u1ed7i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\ud83d\udcca Minh h\u1ecda s\u01a1 \u0111\u1ed3<\/h2>\n<p>Vi\u1ec7c t\u1ea1o bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh y\u00eau c\u1ea7u tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n UML. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c k\u1ef9 s\u01b0 kh\u00e1c c\u00f3 th\u1ec3 hi\u1ec3u s\u01a1 \u0111\u1ed3 m\u00e0 kh\u00f4ng g\u00e2y nh\u1ea7m l\u1eabn.<\/p>\n<h3>Quy t\u1eafc k\u00fd hi\u1ec7u<\/h3>\n<ul>\n<li><strong>Tr\u1ea1ng th\u00e1i:<\/strong>H\u00ecnh ch\u1eef nh\u1eadt bo tr\u00f2n v\u1edbi t\u00ean tr\u1ea1ng th\u00e1i \u1edf ch\u00ednh gi\u1eefa.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u:<\/strong> M\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eadm.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac:<\/strong> M\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eadm b\u00ean trong m\u1ed9t h\u00ecnh tr\u00f2n l\u1edbn h\u01a1n.<\/li>\n<li><strong>Chuy\u1ec3n ti\u1ebfp:<\/strong> C\u00e1c \u0111\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf.<\/li>\n<li><strong>Nh\u00e3n:<\/strong>S\u1ef1 ki\u1ec7n \/ \u0110i\u1ec1u ki\u1ec7n \/ H\u00e0nh \u0111\u1ed9ng (v\u00ed d\u1ee5:<code>timer\/ pin_ok \/ b\u1eaft_\u0111o<\/code>).<\/li>\n<\/ul>\n<h3>Ph\u00e2n c\u1ea5p v\u00e0 v\u00f9ng<\/h3>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i h\u1ee3p th\u00e0nh. V\u00ed d\u1ee5, tr\u1ea1ng th\u00e1i<strong>K\u1ebft n\u1ed1i<\/strong> tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia nh\u1ecf th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i con:<\/p>\n<ul>\n<li><strong>Qu\u00e9t:<\/strong> \u0110ang t\u00ecm ki\u1ebfm c\u1ed5ng k\u1ebft n\u1ed1i.<\/li>\n<li><strong>X\u00e1c th\u1ef1c:<\/strong> \u0110ang x\u00e1c minh th\u00f4ng tin x\u00e1c th\u1ef1c.<\/li>\n<li><strong>S\u1eb5n s\u00e0ng:<\/strong> K\u1ebft n\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp.<\/li>\n<\/ul>\n<p>C\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p n\u00e0y gi\u1ea3m thi\u1ec3u s\u1ef1 l\u1ed9n x\u1ed9n tr\u00ean s\u01a1 \u0111\u1ed3 ch\u00ednh trong khi v\u1eabn duy tr\u00ec logic chi ti\u1ebft \u1edf nh\u1eefng n\u01a1i c\u1ea7n thi\u1ebft. N\u00f3 c\u0169ng cho ph\u00e9p chia s\u1ebb c\u00e1c h\u00e0nh \u0111\u1ed9ng v\u00e0o v\u00e0 ra gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i con.<\/p>\n<h2>\ud83e\udde0 C\u00e1c c\u00e2n nh\u1eafc khi tri\u1ec3n khai<\/h2>\n<p>Chuy\u1ec3n \u0111\u1ed5i s\u01a1 \u0111\u1ed3 th\u00e0nh m\u00e3 ngu\u1ed3n \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 k\u1ef7 lu\u1eadt. Logic m\u00e1y tr\u1ea1ng th\u00e1i n\u00ean \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t kh\u1ecfi logic kinh doanh.<\/p>\n<h3>1. Qu\u1ea3n l\u00fd bi\u1ebfn tr\u1ea1ng th\u00e1i<\/h3>\n<p>Tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u trong m\u1ed9t bi\u1ebfn duy tr\u00ec xuy\u00ean su\u1ed1t c\u00e1c cu\u1ed9c g\u1ecdi h\u00e0m. N\u1ebfu thi\u1ebft b\u1ecb kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u1ed9t c\u00e1ch b\u1ea5t ng\u1edd, tr\u1ea1ng th\u00e1i n\u00ean kh\u00f4i ph\u1ee5c v\u1ec1 m\u1eb7c \u0111\u1ecbnh an to\u00e0n, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0110ang ch\u1edd.<\/p>\n<h3>2. \u0110\u1eb7t h\u00e0ng s\u1ef1 ki\u1ec7n<\/h3>\n<p>C\u00e1c s\u1ef1 ki\u1ec7n th\u01b0\u1eddng x\u1ea3y ra b\u1ea5t \u0111\u1ed3ng b\u1ed9. V\u00ed d\u1ee5, m\u1ed9t g\u00f3i m\u1ea1ng c\u00f3 th\u1ec3 \u0111\u1ebfn trong khi thi\u1ebft b\u1ecb \u0111ang \u1edf tr\u1ea1ng th\u00e1i \u0110o l\u01b0\u1eddng. M\u1ed9t h\u00e0ng \u0111\u1ee3i s\u1ef1 ki\u1ec7n s\u1ebd l\u01b0u tr\u1eef c\u00e1c t\u00edn hi\u1ec7u n\u00e0y \u0111\u1ec3 x\u1eed l\u00fd khi h\u1ec7 th\u1ed1ng s\u1eb5n s\u00e0ng.<\/p>\n<ul>\n<li><strong>\u01afu ti\u00ean:<\/strong>C\u00e1c l\u1ed7i nghi\u00eam tr\u1ecdng (nh\u01b0 pin y\u1ebfu) n\u00ean \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cao h\u01a1n vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u th\u00f4ng th\u01b0\u1eddng.<\/li>\n<li><strong>Gi\u1ea3m nhi\u1ec5u:<\/strong>C\u00e1c n\u00fat v\u1eadt l\u00fd ho\u1eb7c nhi\u1ec5u c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c s\u1ef1 ki\u1ec7n gi\u1ea3. Logic gi\u1ea3m nhi\u1ec5u ng\u0103n ch\u1eb7n vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i \u0111\u1ed9t ng\u1ed9t.<\/li>\n<\/ul>\n<h3>3. H\u1ea1n ch\u1ebf th\u1eddi gian v\u00e0 b\u1ed9 gi\u00e1m s\u00e1t<\/h3>\n<p>M\u1ed9t m\u00e1y tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 b\u1ecb k\u1eb9t trong v\u00f2ng l\u1eb7p n\u1ebfu \u0111i\u1ec1u ki\u1ec7n chuy\u1ec3n ti\u1ebfp kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng. B\u1ed9 \u0111\u1ebfm th\u1eddi gian gi\u00e1m s\u00e1t s\u1ebd kh\u1edfi \u0111\u1ed9ng l\u1ea1i h\u1ec7 th\u1ed1ng n\u1ebfu n\u00f3 \u1edf trong m\u1ed9t tr\u1ea1ng th\u00e1i l\u00e2u h\u01a1n th\u1eddi gian t\u1ed1i \u0111a d\u1ef1 ki\u1ebfn.<\/p>\n<p><strong>V\u00ed d\u1ee5 t\u00ecnh hu\u1ed1ng:<\/strong><\/p>\n<ol>\n<li>H\u1ec7 th\u1ed1ng chuy\u1ec3n v\u00e0o <em>K\u1ebft n\u1ed1i<\/em> tr\u1ea1ng th\u00e1i.<\/li>\n<li>B\u1ed9 \u0111\u1ebfm th\u1eddi gian b\u1eaft \u0111\u1ea7u (v\u00ed d\u1ee5: 10 gi\u00e2y).<\/li>\n<li>Th\u1ecfa thu\u1eadn m\u1ea1ng th\u1ea5t b\u1ea1i.<\/li>\n<li>B\u1ed9 \u0111\u1ebfm th\u1eddi gian h\u1ebft h\u1ea1n.<\/li>\n<li>H\u1ec7 th\u1ed1ng chuy\u1ec3n sang <em>L\u1ed7i<\/em> tr\u1ea1ng th\u00e1i ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/li>\n<\/ol>\n<h2>\ud83d\udee0\ufe0f Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n<p>Thi\u1ebft k\u1ebf m\u00e1y tr\u1ea1ng th\u00e1i d\u1ec5 m\u1eafc ph\u1ea3i nh\u1eefng l\u1ed7i c\u1ee5 th\u1ec3. Vi\u1ec7c nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng l\u1ed7i n\u00e0y s\u1ebd gi\u00fap t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng \u1ed5n \u0111\u1ecbnh h\u01a1n.<\/p>\n<h3>Sai l\u1ea7m 1: V\u1ea5n \u0111\u1ec1 kim c\u01b0\u01a1ng<\/h3>\n<p>Tr\u00e1nh nh\u1eefng t\u00ecnh hu\u1ed1ng m\u00e0 nhi\u1ec1u chuy\u1ec3n ti\u1ebfp d\u1eabn \u0111\u1ebfn c\u00f9ng m\u1ed9t tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng. \u0110i\u1ec1u n\u00e0y khi\u1ebfn vi\u1ec7c g\u1ee1 l\u1ed7i tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/p>\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> \u0110\u1ea3m b\u1ea3o m\u1ecdi chuy\u1ec3n ti\u1ebfp \u0111\u1ec1u c\u00f3 s\u1ef1 ki\u1ec7n duy nh\u1ea5t ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7.<\/li>\n<\/ul>\n<h3>Sai l\u1ea7m 2: Thi\u1ebfu h\u00e0nh \u0111\u1ed9ng tho\u00e1t<\/h3>\n<p>N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c r\u1eddi kh\u1ecfi m\u00e0 kh\u00f4ng d\u1ecdn d\u1eb9p t\u00e0i nguy\u00ean (nh\u01b0 \u0111\u00f3ng m\u1ed9t tr\u00ecnh gi\u1eef t\u1ec7p ho\u1eb7c gi\u1ea3i ph\u00f3ng m\u1ed9t kh\u00f3a), c\u00f3 th\u1ec3 x\u1ea3y ra r\u00f2 r\u1ec9 b\u1ed9 nh\u1edb ho\u1eb7c treo ph\u1ea7n c\u1ee9ng.<\/p>\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> X\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng c\u00e1c h\u00e0nh \u0111\u1ed9ng tho\u00e1t cho t\u1eebng tr\u1ea1ng th\u00e1i trong s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n<h3>Sai l\u1ea7m 3: V\u00f2ng l\u1eb7p v\u00f4 h\u1ea1n<\/h3>\n<p>C\u00e1c chuy\u1ec3n ti\u1ebfp quay tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i gi\u1ed1ng nhau m\u00e0 kh\u00f4ng ti\u00eau th\u1ee5 s\u1ef1 ki\u1ec7n ho\u1eb7c t\u0103ng b\u1ed9 \u0111\u1ebfm c\u00f3 th\u1ec3 g\u00e2y ra v\u00f2ng l\u1eb7p v\u00f4 h\u1ea1n.<\/p>\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> Tri\u1ec3n khai b\u1ed9 \u0111\u1ebfm th\u1eed l\u1ea1i t\u0103ng khi th\u1ea5t b\u1ea1i.<\/li>\n<\/ul>\n<h3>Sai l\u1ea7m 4: Qu\u00e1 ph\u1ee9c t\u1ea1p<\/h3>\n<p>C\u1ed1 g\u1eafng m\u00f4 h\u00ecnh h\u00f3a m\u1ecdi tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t trong s\u01a1 \u0111\u1ed3 ch\u00ednh khi\u1ebfn n\u00f3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc.<\/p>\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> S\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i l\u1ed3ng gh\u00e9p cho c\u00e1c logic con ph\u1ee9c t\u1ea1p. Gi\u1eef s\u01a1 \u0111\u1ed3 c\u1ea5p cao t\u1eadp trung v\u00e0o lu\u1ed3ng ch\u00ednh.<\/li>\n<\/ul>\n<h2>\ud83d\udd0b Chi\u1ebfn l\u01b0\u1ee3c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng<\/h2>\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t c\u1ea3m bi\u1ebfn IoT, m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 c\u00f4ng c\u1ee5 ch\u00ednh \u0111\u1ec3 qu\u1ea3n l\u00fd n\u0103ng l\u01b0\u1ee3ng. M\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ec1u c\u00f3 chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<table>\n<thead>\n<tr>\n<th>Tr\u1ea1ng th\u00e1i<\/th>\n<th>Ch\u1ebf \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng<\/th>\n<th>D\u00f2ng \u0111i\u1ec7n \u01b0\u1edbc t\u00ednh<\/th>\n<th>Th\u1eddi l\u01b0\u1ee3ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ch\u1edd<\/td>\n<td>Ng\u1ee7 s\u00e2u<\/td>\n<td>Th\u1ea5p (v\u00f9ng \u00b5A)<\/td>\n<td>Ph\u00fat<\/td>\n<\/tr>\n<tr>\n<td>\u0110o l\u01b0\u1eddng<\/td>\n<td>K\u00edch ho\u1ea1t<\/td>\n<td>Trung b\u00ecnh (d\u1ea3i mA)<\/td>\n<td>Gi\u00e2y<\/td>\n<\/tr>\n<tr>\n<td>K\u1ebft n\u1ed1i\/Ph\u00e1t<\/td>\n<td>K\u00edch ho\u1ea1t Radio<\/td>\n<td>Cao (d\u1ea3i mA)<\/td>\n<td>Gi\u00e2y<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed7i<\/td>\n<td>K\u00edch ho\u1ea1t<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Cho \u0111\u1ebfn khi \u0111\u01b0\u1ee3c s\u1eeda<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>T\u1ed1i \u01b0u h\u00f3a th\u1eddi gian d\u00e0nh cho <em>K\u1ebft n\u1ed1i<\/em> v\u00e0 <em>Ph\u00e1t<\/em>c\u00e1c tr\u1ea1ng th\u00e1i l\u00e0 r\u1ea5t quan tr\u1ecdng. N\u1ebfu m\u1ea1ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh, thi\u1ebft b\u1ecb n\u00ean gi\u1ea3m thi\u1ec3u s\u1ed1 l\u1ea7n th\u1eed l\u1ea1i \u0111\u1ec3 ti\u1ebft ki\u1ec7m pin.<\/p>\n<h2>\ud83d\udcdd T\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u v\u00e0 ghi nh\u1eadt k\u00fd<\/h2>\n<p>Khi c\u1ea3m bi\u1ebfn chuy\u1ec3n t\u1eeb <em>\u0110o l\u01b0\u1eddng<\/em> sang <em>Ph\u00e1t<\/em>, t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 \u0111i\u1ec1u then ch\u1ed1t. M\u00e1y tr\u1ea1ng th\u00e1i c\u1ea7n \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb ghi \u0111\u00e8 tr\u01b0\u1edbc khi \u0111\u01b0\u1ee3c g\u1eedi.<\/p>\n<ul>\n<li><strong>\u0110\u1ec7m k\u00e9p:<\/strong> S\u1eed d\u1ee5ng hai b\u1ed9 \u0111\u1ec7m b\u1ed9 nh\u1edb. M\u1ed9t \u0111ang \u0111\u01b0\u1ee3c \u0111\u1ecdc, m\u1ed9t \u0111ang \u0111\u01b0\u1ee3c ghi.<\/li>\n<li><strong>Ki\u1ec3m tra t\u1ed5ng:<\/strong> X\u00e1c minh t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u khi nh\u1eadn t\u1ea1i c\u1ed5ng. N\u1ebfu m\u1ed9t g\u00f3i tin b\u1ecb h\u1ecfng, c\u1ed5ng s\u1ebd g\u1eedi m\u1ed9t t\u00edn hi\u1ec7u NACK (ph\u1ea3n h\u1ed3i ti\u00eau c\u1ef1c).<\/li>\n<li><strong>Logic th\u1eed l\u1ea1i:<\/strong> M\u00e1y tr\u1ea1ng th\u00e1i ph\u1ea3i x\u1eed l\u00fd NACK b\u1eb1ng c\u00e1ch quay l\u1ea1i tr\u1ea1ng th\u00e1i <em>Ph\u00e1t<\/em> v\u1edbi d\u1eef li\u1ec7u gi\u1ed1ng nhau.<\/li>\n<\/ul>\n<p>Ghi l\u1ed7i v\u00e0o b\u1ed9 nh\u1edb kh\u00f4ng bay h\u01a1i (nh\u01b0 EEPROM ho\u1eb7c Flash) cho ph\u00e9p ph\u00e2n t\u00edch sau khi tri\u1ec3n khai. <em>L\u1ed7i<\/em>tr\u1ea1ng th\u00e1i n\u00ean ghi th\u1eddi \u0111i\u1ec3m v\u00e0 m\u00e3 l\u1ed7i tr\u01b0\u1edbc khi chuy\u1ec3n sang tr\u1ea1ng th\u00e1i an to\u00e0n.<\/p>\n<h2>\ud83d\ude80 Nh\u1eefng c\u00e2n nh\u1eafc cu\u1ed1i c\u00f9ng<\/h2>\n<p>Vi\u1ec7c x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t b\u00e0i t\u1eadp v\u1ec1 s\u1ef1 r\u00f5 r\u00e0ng. N\u00f3 bu\u1ed9c ng\u01b0\u1eddi thi\u1ebft k\u1ebf ph\u1ea3i xem x\u00e9t m\u1ecdi \u0111i\u1ec1u ki\u1ec7n c\u00f3 th\u1ec3 x\u1ea3y ra v\u1edbi h\u1ec7 th\u1ed1ng. \u0110\u1ed1i v\u1edbi m\u1ed9t c\u1ea3m bi\u1ebfn nh\u00e0 th\u00f4ng minh IoT, s\u1ef1 nghi\u00eam ng\u1eb7t n\u00e0y tr\u1ef1c ti\u1ebfp chuy\u1ec3n h\u00f3a th\u00e0nh \u0111\u1ed9 tin c\u1eady.<\/p>\n<p><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh:<\/strong><\/p>\n<ul>\n<li>B\u1eaft \u0111\u1ea7u b\u1eb1ng danh s\u00e1ch r\u00f5 r\u00e0ng c\u00e1c tr\u1ea1ng th\u00e1i d\u1ef1a tr\u00ean y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c chuy\u1ec3n ti\u1ebfp m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u1edbi s\u1ef1 ki\u1ec7n v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7.<\/li>\n<li>S\u1eed d\u1ee5ng c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p \u0111\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p.<\/li>\n<li>Lu\u00f4n t\u00ednh \u0111\u1ebfn ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng trong th\u1eddi gian tr\u1ea1ng th\u00e1i.<\/li>\n<li>L\u00ean k\u1ebf ho\u1ea1ch ph\u1ee5c h\u1ed3i l\u1ed7i tr\u00ean m\u1ecdi \u0111\u01b0\u1eddng \u0111i quan tr\u1ecdng.<\/li>\n<\/ul>\n<p>M\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng gi\u1eefa c\u00e1c \u0111\u1ed9i ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m. N\u00f3 gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3 v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 mong \u0111\u1ee3i, ngay c\u1ea3 khi m\u1ea1ng th\u1ea5t b\u1ea1i ho\u1eb7c pin c\u1ea1n. B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c b\u01b0\u1edbc c\u00f3 c\u1ea5u tr\u00fac n\u00e0y, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng b\u1ec1n b\u1ec9, hi\u1ec7u qu\u1ea3 v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec.<\/p>\n<p>H\u00e3y nh\u1edb, m\u1ee5c ti\u00eau kh\u00f4ng ph\u1ea3i l\u00e0 d\u1ef1 \u0111o\u00e1n t\u01b0\u01a1ng lai, m\u00e0 l\u00e0 x\u1eed l\u00fd hi\u1ec7n t\u1ea1i m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. V\u1edbi n\u1ec1n t\u1ea3ng m\u00e1y tr\u1ea1ng th\u00e1i v\u1eefng ch\u1eafc, c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 th\u00edch nghi v\u1edbi b\u1ea3n ch\u1ea5t \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng nh\u00e0 th\u00f4ng minh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang cho Internet v\u1ea1n v\u1eadt \u0111\u00f2i h\u1ecfi h\u01a1n c\u1ea3 vi\u1ec7c n\u1ed1i d\u00e2y v\u00e0 vi\u1ebft m\u00e3.<\/p>\n","protected":false},"author":3479,"featured_media":11210,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"M\u00e1y tr\u1ea1ng th\u00e1i UML cho c\u1ea3m bi\u1ebfn IoT | H\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf \ud83c\udfe0","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch x\u00e2y d\u1ef1ng c\u00e1c s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i UML \u0111\u00e1ng tin c\u1eady cho c\u1ea3m bi\u1ebfn nh\u00e0 th\u00f4ng minh IoT. H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 tr\u1ea1ng th\u00e1i, chuy\u1ec3n ti\u1ebfp v\u00e0 x\u1eed l\u00fd s\u1ef1 ki\u1ec7n.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[127],"tags":[162,101],"class_list":["post-11209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-academic","tag-uml"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M\u00e1y tr\u1ea1ng th\u00e1i UML cho c\u1ea3m bi\u1ebfn IoT | H\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf \ud83c\udfe0<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch x\u00e2y d\u1ef1ng c\u00e1c s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i UML \u0111\u00e1ng tin c\u1eady cho c\u1ea3m bi\u1ebfn nh\u00e0 th\u00f4ng minh IoT. 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