{"id":50828,"date":"2023-04-21T14:28:03","date_gmt":"2023-04-21T19:28:03","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-a-transducer-work\/"},"modified":"2025-01-21T07:12:11","modified_gmt":"2025-01-21T12:12:11","slug":"how-does-a-transducer-work","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-a-transducer-work\/","title":{"rendered":"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i"},"content":{"rendered":"<p>M\u1ed9t transducer, hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, \u0111\u00f3ng vai tr\u00f2 c\u1ea7u n\u1ed1i gi\u1eefa th\u1ebf gi\u1edbi v\u1eadt l\u00fd v\u00e0 th\u1ebf gi\u1edbi \u0111i\u1ec7n t\u1eed. N\u00f3 bi\u1ebfn \u0111\u1ed5i m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng th\u00e0nh m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c.  Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 t\u1eeb n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc sang n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n, t\u1eeb n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n sang n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc, ho\u1eb7c gi\u1eefa nhi\u1ec1u d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c nhau nh\u01b0 \u00e1nh s\u00e1ng, nhi\u1ec7t, \u00e2m thanh. S\u1ef1 \u0111a d\u1ea1ng trong \u1ee9ng d\u1ee5ng c\u1ee7a transducer ph\u1ea3n \u00e1nh t\u00ednh linh ho\u1ea1t v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 trong cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng chung c\u1ee7a Transducer<\/h3>\n<p>Transducer ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c hi\u1ec7u \u1ee9ng v\u1eadt l\u00fd kh\u00e1c nhau.  M\u1ed9t s\u1ed1 hi\u1ec7u \u1ee9ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, hi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o, hi\u1ec7u \u1ee9ng \u0111i\u1ec7n tr\u1edf, v\u00e0 hi\u1ec7u \u1ee9ng quang \u0111i\u1ec7n.  T\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng c\u1ea7n chuy\u1ec3n \u0111\u1ed5i, transducer s\u1ebd \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 ch\u1ebf t\u1ea1o d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng v\u1eadt l\u00fd t\u01b0\u01a1ng \u1ee9ng. V\u00ed d\u1ee5, m\u1ed9t microphone s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n, trong khi m\u1ed9t loa l\u1ea1i s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh \u00e2m thanh.<\/p>\n<h3>Ph\u00e2n lo\u1ea1i Transducer<\/h3>\n<p>Transducer c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean nhi\u1ec1u ti\u00eau ch\u00ed kh\u00e1c nhau, bao g\u1ed3m lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, v\u00e0 \u1ee9ng d\u1ee5ng. M\u1ed9t s\u1ed1 lo\u1ea1i transducer ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Transducer \u00e1p \u0111i\u1ec7n:<\/strong> S\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa \u00e1p su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n \u00e1p.<\/li>\n<li><strong>Transducer \u0111i\u1ec7n dung:<\/strong>  \u0110o s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n dung \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 thay \u0111\u1ed5i c\u1ee7a \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd.<\/li>\n<li><strong>Transducer \u0111i\u1ec7n c\u1ea3m:<\/strong> S\u1eed d\u1ee5ng s\u1ef1 thay \u0111\u1ed5i t\u1eeb th\u00f4ng \u0111\u1ec3 \u0111o l\u01b0\u1eddng c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd.<\/li>\n<li><strong>Transducer quang \u0111i\u1ec7n:<\/strong> Chuy\u1ec3n \u0111\u1ed5i \u00e1nh s\u00e1ng th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i Transducer<\/th>\n<th>N\u0103ng l\u01b0\u1ee3ng \u0110\u1ea7u V\u00e0o<\/th>\n<th>N\u0103ng l\u01b0\u1ee3ng \u0110\u1ea7u Ra<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00c1p \u0111i\u1ec7n<\/td>\n<td>\u00c1p su\u1ea5t\/L\u1ef1c<\/td>\n<td>\u0110i\u1ec7n \u00e1p<\/td>\n<td>Microphone, Loa, \u0110\u1ea7u d\u00f2 si\u00eau \u00e2m<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n dung<\/td>\n<td>\u0110\u1ed9 d\u1ecbch chuy\u1ec3n<\/td>\n<td>\u0110i\u1ec7n dung<\/td>\n<td>C\u1ea3m bi\u1ebfn v\u1ecb tr\u00ed<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n c\u1ea3m<\/td>\n<td>\u0110\u1ed9 d\u1ecbch chuy\u1ec3n<\/td>\n<td>\u0110i\u1ec7n c\u1ea3m<\/td>\n<td>C\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn<\/td>\n<\/tr>\n<tr>\n<td>Quang \u0111i\u1ec7n<\/td>\n<td>\u00c1nh s\u00e1ng<\/td>\n<td>\u0110i\u1ec7n \u00e1p<\/td>\n<td>Pin m\u1eb7t tr\u1eddi, Photodiode<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Transducer si\u00eau \u00e2m<\/h3>\n<p>Transducer si\u00eau \u00e2m l\u00e0 m\u1ed9t lo\u1ea1i transducer \u00e1p \u0111i\u1ec7n \u0111\u1eb7c bi\u1ec7t, chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh s\u00f3ng si\u00eau \u00e2m v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.  Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y, h\u00ecnh \u1ea3nh y t\u1ebf, v\u00e0 l\u00e0m s\u1ea1ch b\u1eb1ng si\u00eau \u00e2m.  M\u1ed9t s\u1ed1 transducer si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 r\u1ea5t cao \u0111\u1ec3 t\u1ea1o ra h\u00ecnh \u1ea3nh chi ti\u1ebft, trong khi nh\u1eefng lo\u1ea1i kh\u00e1c ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 th\u1ea5p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng l\u00e0m s\u1ea1ch.  Trong l\u0129nh v\u1ef1c ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y, vi\u1ec7c l\u1ef1a ch\u1ecdn transducer si\u00eau \u00e2m ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a k\u1ebft qu\u1ea3.<\/p>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a Transducer<\/h3>\n<p>Transducer c\u00f3 m\u1eb7t trong h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u00e0 h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a hi\u1ec7n \u0111\u1ea1i. T\u1eeb c\u00e1c thi\u1ebft b\u1ecb gia d\u1ee5ng \u0111\u01a1n gi\u1ea3n nh\u01b0 m\u00e1y gi\u1eb7t v\u00e0 t\u1ee7 l\u1ea1nh \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p nh\u01b0 \u00f4 t\u00f4 v\u00e0 m\u00e1y bay, transducer \u0111\u00f3ng vai tr\u00f2 kh\u00f4ng th\u1ec3 thi\u1ebfu. Ch\u00fang cho ph\u00e9p ch\u00fang ta t\u01b0\u01a1ng t\u00e1c v\u1edbi th\u1ebf gi\u1edbi xung quanh m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n<p>T\u00f3m l\u1ea1i, transducer l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, t\u1eeb \u0111o l\u01b0\u1eddng v\u00e0 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ebfn truy\u1ec1n th\u00f4ng v\u00e0 gi\u1ea3i tr\u00ed.  S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 transducer \u0111ang th\u00fac \u0111\u1ea9y s\u1ef1 ti\u1ebfn b\u1ed9 trong nhi\u1ec1u l\u0129nh v\u1ef1c v\u00e0 h\u1ee9a h\u1eb9n s\u1ebd mang l\u1ea1i nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111\u1ed9t ph\u00e1 h\u01a1n n\u1eefa trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ed9t transducer, hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, \u0111\u00f3ng vai tr\u00f2 c\u1ea7u n\u1ed1i gi\u1eefa th\u1ebf gi\u1edbi v\u1eadt l\u00fd v\u00e0 th\u1ebf gi\u1edbi \u0111i\u1ec7n t\u1eed. N\u00f3 bi\u1ebfn \u0111\u1ed5i m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng th\u00e0nh m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c. Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 t\u1eeb n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc sang n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n, t\u1eeb n\u0103ng l\u01b0\u1ee3ng<\/p>\n","protected":false},"author":1,"featured_media":24651,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-50828","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50828","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=50828"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50828\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24651"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=50828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=50828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=50828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}