{"id":476594,"date":"2023-08-09T07:31:20","date_gmt":"2023-08-09T07:31:20","guid":{"rendered":""},"modified":"2023-09-05T11:13:02","modified_gmt":"2023-09-05T11:13:02","slug":"data-acquisition","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/data-acquisition\/","title":{"rendered":"Thu th\u1eadp d\u1eef li\u1ec7u"},"content":{"rendered":"<p>Thu th\u1eadp d\u1eef li\u1ec7u \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u1ea5y m\u1eabu t\u00edn hi\u1ec7u \u0111\u1ec3 \u0111o c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadt l\u00fd trong th\u1ebf gi\u1edbi th\u1ef1c v\u00e0 chuy\u1ec3n \u0111\u1ed5i c\u00e1c m\u1eabu k\u1ebft qu\u1ea3 th\u00e0nh c\u00e1c gi\u00e1 tr\u1ecb s\u1ed1 k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00e1y t\u00ednh x\u1eed l\u00fd. Nh\u1eefng t\u00edn hi\u1ec7u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau nh\u01b0 c\u1ea3m bi\u1ebfn v\u1eadt l\u00fd ho\u1eb7c h\u00f3a h\u1ecdc, micr\u00f4, h\u00ecnh \u1ea3nh ho\u1eb7c \u0111\u1ea7u v\u00e0o th\u1ee7 c\u00f4ng. D\u1eef li\u1ec7u sau khi \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch v\u00e0 di\u1ec5n gi\u1ea3i cho nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau nh\u01b0 ra quy\u1ebft \u0111\u1ecbnh, d\u1ef1 \u0111o\u00e1n v\u00e0 ki\u1ec3m so\u00e1t quy tr\u00ecnh.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<p>Thu th\u1eadp d\u1eef li\u1ec7u, nh\u01b0 m\u1ed9t kh\u00e1i ni\u1ec7m, \u0111\u00e3 xu\u1ea5t hi\u1ec7n k\u1ec3 t\u1eeb khi con ng\u01b0\u1eddi b\u1eaft \u0111\u1ea7u ghi l\u1ea1i c\u00e1c quan s\u00e1t. Con ng\u01b0\u1eddi s\u01a1 khai s\u1ebd ghi l\u1ea1i nh\u1eefng thay \u0111\u1ed5i theo m\u00f9a, h\u00e0nh vi c\u1ee7a \u0111\u1ed9ng v\u1eadt v\u00e0 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean kh\u00e1c nh\u1eb1m m\u1ee5c \u0111\u00edch sinh t\u1ed3n v\u00e0 h\u1ecdc t\u1eadp. \u1ee8ng d\u1ee5ng c\u00f4ng ngh\u1ec7 \u0111\u1ea7u ti\u00ean trong vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a \u0111i\u1ec7n b\u00e1o v\u00e0o th\u1ebf k\u1ef7 19, n\u01a1i m\u00e3 Morse \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n tin nh\u1eafn qua kho\u1ea3ng c\u00e1ch xa.<\/p>\n<p>Tuy nhi\u00ean, vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i b\u1eaft \u0111\u1ea7u v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a m\u00e1y ghi d\u1eef li\u1ec7u v\u00e0o gi\u1eefa th\u1ebf k\u1ef7 20. Nh\u1eefng m\u00e1y n\u00e0y c\u00f3 th\u1ec3 ghi l\u1ea1i s\u1ef1 thay \u0111\u1ed5i c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng theo th\u1eddi gian. S\u1ef1 ra \u0111\u1eddi c\u1ee7a m\u00e1y t\u00ednh c\u00e1 nh\u00e2n \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u, khi\u1ebfn n\u00f3 tr\u1edf n\u00ean d\u1ec5 ti\u1ebfp c\u1eadn v\u00e0 linh ho\u1ea1t h\u01a1n.<\/p>\n<p>Vi\u1ec7c s\u1ed1 h\u00f3a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c nh\u1edd s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a B\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1 sang s\u1ed1 (ADC) v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u1ea3m bi\u1ebfn. S\u1ef1 ra \u0111\u1eddi c\u1ee7a internet, thi\u1ebft b\u1ecb IoT v\u00e0 l\u01b0u tr\u1eef \u0111\u00e1m m\u00e2y \u0111\u00e3 \u0111\u01b0a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u l\u00ean quy m\u00f4 ch\u01b0a t\u1eebng c\u00f3 trong th\u1ebf k\u1ef7 21.<\/p>\n<h2>M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1: Thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<p>Vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u bao g\u1ed3m ba th\u00e0nh ph\u1ea7n ch\u00ednh: c\u1ea3m bi\u1ebfn, \u0111i\u1ec1u h\u00f2a t\u00edn hi\u1ec7u v\u00e0 chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1 sang s\u1ed1.<\/p>\n<ul>\n<li><strong>C\u1ea3m bi\u1ebfn:<\/strong> C\u00e1c thi\u1ebft b\u1ecb n\u00e0y ph\u00e1t hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i trong hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd nh\u01b0 nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t ho\u1eb7c c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i nh\u1eefng thay \u0111\u1ed5i n\u00e0y th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n.<\/li>\n<li><strong>\u0110i\u1ec1u h\u00f2a t\u00edn hi\u1ec7u:<\/strong> Giai \u0111o\u1ea1n n\u00e0y bao g\u1ed3m vi\u1ec7c khu\u1ebfch \u0111\u1ea1i, l\u1ecdc v\u00e0 c\u00e1ch ly c\u00e1c t\u00edn hi\u1ec7u do c\u1ea3m bi\u1ebfn t\u1ea1o ra \u0111\u1ec3 chu\u1ea9n b\u1ecb cho giai \u0111o\u1ea1n ti\u1ebfp theo.<\/li>\n<li><strong>Chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1 sang s\u1ed1 (ADC):<\/strong> Qu\u00e1 tr\u00ecnh n\u00e0y chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 c\u00f3 \u0111i\u1ec1u ki\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u s\u1ed1 m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 hi\u1ec3u v\u00e0 x\u1eed l\u00fd \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n<p>Sau ADC, d\u1eef li\u1ec7u s\u1ed1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef, ph\u00e2n t\u00edch v\u00e0 hi\u1ec3n th\u1ecb. Vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u c\u00f3 th\u1ec3 d\u1ef1a tr\u00ean th\u1eddi gian (\u0111i\u1ec3m d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi l\u1ea1i \u0111\u1ec1u \u0111\u1eb7n) ho\u1eb7c d\u1ef1a tr\u00ean s\u1ef1 ki\u1ec7n (\u0111i\u1ec3m d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi l\u1ea1i khi m\u1ed9t s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3 x\u1ea3y ra).<\/p>\n<h2>C\u01a1 ch\u1ebf n\u1ed9i b\u1ed9 c\u1ee7a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<p>B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh thu th\u1eadp d\u1eef li\u1ec7u l\u00e0 t\u1ea1o d\u1eef li\u1ec7u, x\u1ea3y ra khi c\u00e1c c\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i trong hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd. V\u00ed d\u1ee5: c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 trong ph\u00f2ng.<\/p>\n<p>Ti\u1ebfp theo l\u00e0 \u0111i\u1ec1u h\u00f2a t\u00edn hi\u1ec7u. T\u00edn hi\u1ec7u do c\u1ea3m bi\u1ebfn t\u1ea1o ra th\u01b0\u1eddng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i tr\u01b0\u1edbc khi ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1ed1 h\u00f3a. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c khu\u1ebfch \u0111\u1ea1i (t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u), l\u1ecdc (lo\u1ea1i b\u1ecf nhi\u1ec5u kh\u00f4ng mong mu\u1ed1n) ho\u1eb7c c\u00e1c quy tr\u00ecnh kh\u00e1c.<\/p>\n<p>Sau \u0111\u00f3, t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 c\u00f3 \u0111i\u1ec1u ki\u1ec7n tr\u1ea3i qua ADC. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c l\u1ea5y m\u1eabu t\u00edn hi\u1ec7u \u1edf nh\u1eefng kho\u1ea3ng th\u1eddi gian ri\u00eang bi\u1ec7t v\u00e0 l\u01b0\u1ee3ng t\u1eed h\u00f3a c\u00e1c m\u1eabu th\u00e0nh m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c gi\u00e1 tr\u1ecb s\u1ed1 h\u1eefu h\u1ea1n.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, d\u1eef li\u1ec7u s\u1ed1 \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng m\u00e1y t\u00ednh. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn ph\u00e2n t\u00edch th\u1ed1ng k\u00ea, tr\u1ef1c quan h\u00f3a, l\u01b0u tr\u1eef ho\u1eb7c k\u00edch ho\u1ea1t m\u1ed9t s\u1ed1 h\u00e0nh \u0111\u1ed9ng nh\u1ea5t \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u.<\/p>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<ol>\n<li><strong>T\u00ednh linh ho\u1ea1t:<\/strong> H\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh \u0111\u1ec3 x\u1eed l\u00fd nhi\u1ec1u lo\u1ea1i \u0111\u1ea7u v\u00e0o t\u1eeb nhi\u1ec1u lo\u1ea1i c\u1ea3m bi\u1ebfn kh\u00e1c nhau.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/strong> Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng \u0111\u1ec3 ch\u1ee9a nhi\u1ec1u k\u00eanh h\u01a1n, nhi\u1ec1u c\u1ea3m bi\u1ebfn h\u01a1n ho\u1eb7c \u0111i\u1ec1u h\u00f2a t\u00edn hi\u1ec7u ph\u1ee9c t\u1ea1p h\u01a1n.<\/li>\n<li><strong>S\u1ef1 ch\u00ednh x\u00e1c:<\/strong> H\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/li>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng th\u1eddi gian th\u1ef1c:<\/strong> Nhi\u1ec1u h\u1ec7 th\u1ed1ng cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t theo th\u1eddi gian th\u1ef1c.<\/li>\n<li><strong>L\u01b0u tr\u1eef v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u:<\/strong> Ch\u00fang cho ph\u00e9p d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec3 ph\u00e2n t\u00edch sau n\u00e0y v\u00e0 c\u0169ng t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c ph\u00e2n t\u00edch ngay l\u1eadp t\u1ee9c.<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>\u0110\u1eb7c tr\u01b0ng<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ed9c l\u1eadp<\/td>\n<td>Bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea7n thi\u1ebft bao g\u1ed3m l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng.<\/td>\n<td>Gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng, ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p.<\/td>\n<\/tr>\n<tr>\n<td>D\u1ef1a tr\u00ean m\u00e1y t\u00ednh<\/td>\n<td>S\u1eed d\u1ee5ng m\u00e1y t\u00ednh \u0111\u1ec3 l\u01b0u tr\u1eef, ph\u00e2n t\u00edch v\u00e0 giao di\u1ec7n d\u1eef li\u1ec7u.<\/td>\n<td>Th\u00ed nghi\u1ec7m trong ph\u00f2ng th\u00ed nghi\u1ec7m, th\u1eed nghi\u1ec7m \u00f4 t\u00f4.<\/td>\n<\/tr>\n<tr>\n<td>ph\u00e2n ph\u1ed1i<\/td>\n<td>Nhi\u1ec1u thi\u1ebft b\u1ecb thu th\u1eadp d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c n\u1ed1i m\u1ea1ng v\u1edbi nhau.<\/td>\n<td>Quy tr\u00ecnh c\u00f4ng nghi\u1ec7p quy m\u00f4 l\u1edbn, gi\u00e1m s\u00e1t th\u1eddi ti\u1ebft.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1eed d\u1ee5ng thu th\u1eadp d\u1eef li\u1ec7u: V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>H\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, d\u1ef1 b\u00e1o th\u1eddi ti\u1ebft, ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe, qu\u1ed1c ph\u00f2ng, v.v. Tuy nhi\u00ean, nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0y c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 nh\u01b0 nhi\u1ec5u t\u00edn hi\u1ec7u, m\u1ea5t d\u1eef li\u1ec7u ho\u1eb7c c\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m \u0111i\u1ec1u h\u00f2a t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3, s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef \u0111\u00e1ng tin c\u1eady v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt d\u1eef li\u1ec7u.<\/p>\n<h2>So s\u00e1nh v\u1edbi c\u00e1c \u0111i\u1ec1u kho\u1ea3n t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u0103ng nh\u1eadp v\u00e0o d\u1eef li\u1ec7u<\/td>\n<td>M\u1ed9t t\u1eadp h\u1ee3p con c\u1ee7a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u li\u00ean quan \u0111\u1ebfn vi\u1ec7c thu th\u1eadp v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u theo th\u1eddi gian.<\/td>\n<\/tr>\n<tr>\n<td>X\u1eed l\u00fd t\u00edn hi\u1ec7u<\/td>\n<td>Vi\u1ec7c thao t\u00e1c v\u00e0 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u \u2013 th\u01b0\u1eddng x\u1ea3y ra sau khi thu th\u1eadp d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td>Truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<td>Vi\u1ec7c g\u1eedi d\u1eef li\u1ec7u t\u1eeb n\u01a1i n\u00e0y \u0111\u1ebfn n\u01a1i kh\u00e1c. C\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u n\u1ebfu d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn m\u1ed9t \u0111\u1ecba \u0111i\u1ec3m t\u1eeb xa.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Vi\u1ec5n c\u1ea3nh t\u01b0\u01a1ng lai trong vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<p>C\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i nh\u01b0 h\u1ecdc m\u00e1y v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn \u0111ang c\u00e1ch m\u1ea1ng h\u00f3a l\u0129nh v\u1ef1c thu th\u1eadp d\u1eef li\u1ec7u. V\u00ed d\u1ee5: thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu trong b\u1ed9 d\u1eef li\u1ec7u l\u1edbn, trong khi c\u00e1c thi\u1ebft b\u1ecb IoT \u0111ang m\u1edf r\u1ed9ng ph\u1ea1m vi v\u00e0 quy m\u00f4 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 thu th\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<p>\u0110i\u1ec7n to\u00e1n bi\u00ean, bao g\u1ed3m vi\u1ec7c x\u1eed l\u00fd d\u1eef li\u1ec7u g\u1ea7n ngu\u1ed3n thay v\u00ec trong kho x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1eadp trung, c\u0169ng l\u00e0 m\u1ed9t b\u01b0\u1edbc ph\u00e1t tri\u1ec3n \u0111\u1ea7y h\u1ee9a h\u1eb9n trong vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 m\u1ee9c s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng, cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft nhanh h\u01a1n v\u1ec1 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 thu th\u1eadp d\u1eef li\u1ec7u<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong vi\u1ec7c qu\u00e9t web, n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb c\u00e1c trang web. M\u00e1y ch\u1ee7 proxy che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP th\u1ef1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, gi\u00fap qu\u00e1 tr\u00ecnh thu th\u1eadp d\u1eef li\u1ec7u tr\u1edf n\u00ean \u1ea9n danh v\u00e0 \u00edt c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt trang web ch\u1eb7n. H\u01a1n n\u1eefa, proxy c\u00f3 th\u1ec3 gi\u00fap ph\u00e2n ph\u1ed1i y\u00eau c\u1ea7u qua nhi\u1ec1u \u0111\u1ecba ch\u1ec9 IP, do \u0111\u00f3 gi\u1ea3m nguy c\u01a1 qu\u00e1 t\u1ea3i cho m\u1ed9t m\u00e1y ch\u1ee7.<\/p>\n<p>OneProxy, v\u1edbi t\u01b0 c\u00e1ch l\u00e0 nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy \u0111\u00e1ng tin c\u1eady, cung c\u1ea5p gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 cho c\u00e1c t\u00e1c v\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u, \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 cao, ph\u1ea1m vi \u0111\u1ecba l\u00fd r\u1ed9ng v\u00e0 b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd cho ho\u1ea1t \u0111\u1ed9ng k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ol>\n<li><a href=\"https:\/\/www.ni.com\/en-us\/innovations\/white-papers\/06\/what-is-data-acquisition.html\" target=\"_new\" rel=\"noopener nofollow\">National Instruments: Thu th\u1eadp d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/li>\n<li><a href=\"https:\/\/www.engineersgarage.com\/tutorials\/data-acquisition-system-das\/\" target=\"_new\" rel=\"noopener nofollow\">EngineersGarage: Gi\u1edbi thi\u1ec7u chi ti\u1ebft v\u1ec1 h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Data_acquisition\" target=\"_new\" rel=\"noopener nofollow\">Wikipedia: Thu th\u1eadp d\u1eef li\u1ec7u<\/a><\/li>\n<li><a href=\"https:\/\/ieeexplore.ieee.org\/document\/6757172\" target=\"_new\" rel=\"noopener nofollow\">Thu th\u1eadp d\u1eef li\u1ec7u trong th\u1eddi \u0111\u1ea1i d\u1eef li\u1ec7u l\u1edbn<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/\" target=\"_new\" rel=\"noopener\">OneProxy: M\u00e1y ch\u1ee7 proxy \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476595,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476594","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Data Acquisition: Harnessing Information for the Digital Age<\/mark>","faq_items":[{"question":"What is data acquisition?","answer":"<p>Data acquisition is the process of sampling signals that measure real-world physical conditions and converting these samples into digital numeric values that can be manipulated by a computer. These signals can come from various sources such as physical or chemical sensors, microphones, images, or manual inputs.<\/p>"},{"question":"How did data acquisition evolve historically?","answer":"<p>Data acquisition evolved from the recording of natural phenomena in early human history to the use of data loggers in the mid-20th century. With the advent of personal computers, Analog-to-Digital Converters (ADCs), and the internet, data acquisition has grown exponentially, enabling us to gather and analyze vast amounts of data.<\/p>"},{"question":"What are the key components involved in data acquisition?","answer":"<p>The key components in data acquisition are sensors that detect physical changes and convert them into electrical signals, signal conditioning which prepares these signals for conversion, and the Analog-to-Digital Conversion (ADC) process which converts these signals into a digital format that computers can process.<\/p>"},{"question":"What are some key features of data acquisition?","answer":"<p>Key features of data acquisition include versatility, scalability, accuracy, real-time operation, and capabilities for data storage and analysis.<\/p>"},{"question":"What types of data acquisition systems exist?","answer":"<p>There are stand-alone data acquisition systems which are self-contained units, computer-based systems which utilize a computer for data storage and interface, and distributed systems where multiple data acquisition devices are networked together.<\/p>"},{"question":"What problems can occur with data acquisition and how can they be solved?","answer":"<p>Problems with data acquisition can include signal noise, data loss, or security threats. These can be mitigated with effective signal conditioning, use of reliable storage systems, and robust data security measures.<\/p>"},{"question":"What is the future of data acquisition?","answer":"<p>The future of data acquisition is promising with advancements in machine learning, big data analytics, and edge computing. These technologies are helping to identify patterns in larger datasets and reduce latency and bandwidth use for faster insights.<\/p>"},{"question":"How are proxy servers associated with data acquisition?","answer":"<p>Proxy servers play a crucial role in data acquisition, particularly in web scraping. They mask the user's real IP address, making the data acquisition process anonymous and less likely to be blocked by website security systems. They can also help distribute requests over multiple IP addresses, reducing the risk of overloading a single server.<\/p>"},{"question":"How can OneProxy enhance data acquisition?","answer":"<p>As a reliable proxy server provider, OneProxy offers an efficient solution for data acquisition tasks, ensuring high speed, wide geographical coverage, and robust security for users' digital operations.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476594\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476595"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}