{"id":54248,"date":"2022-08-18T03:28:27","date_gmt":"2022-08-18T08:28:27","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/ultrasonic-transducers-and-ultrasonic-sensors\/"},"modified":"2025-01-21T07:26:47","modified_gmt":"2025-01-21T12:26:47","slug":"ultrasonic-transducers-and-ultrasonic-sensors","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/ultrasonic-transducers-and-ultrasonic-sensors\/","title":{"rendered":"\u0110\u1ea7u D\u00f2 &#038; C\u1ea3m Bi\u1ebfn Si\u00eau \u00c2m: Kh\u00e1m Ph\u00e1 C\u00f4ng Ngh\u1ec7"},"content":{"rendered":"<p>Si\u00eau \u00e2m \u0111\u00e3 v\u00e0 \u0111ang tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng ngh\u1ec7 quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn t\u1ef1 \u0111\u1ed9ng h\u00f3a. S\u1ef1 ph\u00e1t tri\u1ec3n n\u00e0y kh\u00f4ng th\u1ec3 thi\u1ebfu vai tr\u00f2 c\u1ee7a c\u00e1c \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m, nh\u1eefng thi\u1ebft b\u1ecb \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c t\u1ea1o ra v\u00e0 thu nh\u1eadn s\u00f3ng si\u00eau \u00e2m. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, ph\u00e2n lo\u1ea1i, \u1ee9ng d\u1ee5ng c\u0169ng nh\u01b0 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m<\/h3>\n<p>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, t\u1ee9c l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u (nh\u01b0 g\u1ed1m \u00e1p \u0111i\u1ec7n) bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u00e2m v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Khi \u0111\u01b0\u1ee3c k\u00edch th\u00edch b\u1edfi m\u1ed9t t\u00edn hi\u1ec7u \u0111i\u1ec7n xoay chi\u1ec1u, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n trong \u0111\u1ea7u d\u00f2 s\u1ebd dao \u0111\u1ed9ng v\u00e0 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m.  Ng\u01b0\u1ee3c l\u1ea1i, khi s\u00f3ng si\u00eau \u00e2m ph\u1ea3n x\u1ea1 t\u1eeb v\u1eadt th\u1ec3 t\u00e1c \u0111\u1ed9ng v\u00e0o \u0111\u1ea7u d\u00f2, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t t\u00edn hi\u1ec7u \u0111i\u1ec7n, cho ph\u00e9p c\u1ea3m bi\u1ebfn x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch, v\u1ecb tr\u00ed ho\u1eb7c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt th\u1ec3. C\u1ea3m bi\u1ebfn si\u00eau \u00e2m v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng bao g\u1ed3m \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m, m\u1ea1ch x\u1eed l\u00fd t\u00edn hi\u1ec7u v\u00e0 b\u1ed9 ph\u1eadn hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3.<\/p>\n<h3>Ph\u00e2n lo\u1ea1i \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m<\/h3>\n<p>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean nhi\u1ec1u ti\u00eau ch\u00ed, bao g\u1ed3m t\u1ea7n s\u1ed1, h\u00ecnh d\u1ea1ng, v\u00e0 v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o.  C\u1ea3m bi\u1ebfn si\u00eau \u00e2m c\u0169ng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo ch\u1ee9c n\u0103ng v\u00e0 \u1ee9ng d\u1ee5ng.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Ti\u00eau ch\u00ed ph\u00e2n lo\u1ea1i<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea7n s\u1ed1<\/td>\n<td>\u0110\u1ea7u d\u00f2 c\u00f3 t\u1ea7n s\u1ed1 th\u1ea5p (d\u01b0\u1edbi 50kHz) th\u01b0\u1eddng d\u00f9ng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111o kho\u1ea3ng c\u00e1ch xa, trong khi \u0111\u1ea7u d\u00f2 t\u1ea7n s\u1ed1 cao (tr\u00ean 1MHz) d\u00f9ng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u01b0 ki\u1ec3m tra v\u1eadt li\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td>H\u00ecnh d\u1ea1ng<\/td>\n<td>\u0110\u1ea7u d\u00f2 c\u00f3 th\u1ec3 c\u00f3 h\u00ecnh d\u1ea1ng \u0111\u0129a, tr\u1ee5, ho\u1eb7c h\u00ecnh d\u1ea1ng \u0111\u1eb7c bi\u1ec7t t\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng.<\/td>\n<\/tr>\n<tr>\n<td>V\u1eadt li\u1ec7u<\/td>\n<td>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn bao g\u1ed3m g\u1ed1m PZT, PVDF.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m<\/h3>\n<p>\u0110\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c:<\/p>\n<ul>\n<li><strong>Y t\u1ebf:<\/strong> Ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh, theo d\u00f5i thai nhi, \u0111i\u1ec1u tr\u1ecb ung th\u01b0.<\/li>\n<li><strong>C\u00f4ng nghi\u1ec7p:<\/strong> Ki\u1ec3m tra khuy\u1ebft t\u1eadt v\u1eadt li\u1ec7u, \u0111o \u0111\u1ed9 d\u00e0y, \u0111o m\u1ee9c ch\u1ea5t l\u1ecfng.<\/li>\n<li><strong>T\u1ef1 \u0111\u1ed9ng h\u00f3a:<\/strong> C\u1ea3m bi\u1ebfn kho\u1ea3ng c\u00e1ch trong robot, xe t\u1ef1 h\u00e0nh, h\u1ec7 th\u1ed1ng \u0111\u1ed7 xe t\u1ef1 \u0111\u1ed9ng.<\/li>\n<li><strong>\u0110o l\u01b0\u1eddng:<\/strong> \u0110o l\u01b0u l\u01b0\u1ee3ng, \u0111o m\u1ee9c n\u01b0\u1edbc.<\/li>\n<\/ul>\n<h3>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m<\/h3>\n<p><strong>\u01afu \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>Gi\u00e1 th\u00e0nh t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p.<\/li>\n<li>D\u1ec5 d\u00e0ng s\u1eed d\u1ee5ng v\u00e0 t\u00edch h\u1ee3p.<\/li>\n<li>Kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/li>\n<li>\u0110o \u0111\u01b0\u1ee3c kho\u1ea3ng c\u00e1ch m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp.<\/li>\n<\/ul>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>\u0110\u1ed9 ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t v\u00e0 \u0111\u1ed9 \u1ea9m.<\/li>\n<li>Kh\u00f3 kh\u0103n trong vi\u1ec7c \u0111o c\u00e1c v\u1eadt th\u1ec3 c\u00f3 b\u1ec1 m\u1eb7t ph\u1ee9c t\u1ea1p ho\u1eb7c v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh m\u1ea1nh.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng ti\u1ec1m n\u0103ng.  S\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c c\u1ee7a c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt \u0111i\u1ec7n t\u1eed s\u1ebd ti\u1ebfp t\u1ee5c n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 m\u1edf r\u1ed9ng ph\u1ea1m vi \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si\u00eau \u00e2m \u0111\u00e3 v\u00e0 \u0111ang tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng ngh\u1ec7 quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn t\u1ef1 \u0111\u1ed9ng h\u00f3a. S\u1ef1 ph\u00e1t tri\u1ec3n n\u00e0y kh\u00f4ng th\u1ec3 thi\u1ebfu vai tr\u00f2 c\u1ee7a c\u00e1c \u0111\u1ea7u d\u00f2 v\u00e0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m, nh\u1eefng thi\u1ebft b\u1ecb \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c t\u1ea1o ra<\/p>\n","protected":false},"author":1,"featured_media":1500,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-54248","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\/54248","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=54248"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/54248\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/1500"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=54248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=54248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=54248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}