{"id":51348,"date":"2023-04-21T13:55:16","date_gmt":"2023-04-21T18:55:16","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-ultrasound-transducer\/"},"modified":"2025-01-21T07:10:30","modified_gmt":"2025-01-21T12:10:30","slug":"diy-ultrasound-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-ultrasound-transducer\/","title":{"rendered":"T\u1ef1 ch\u1ebf \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m: H\u01b0\u1edbng d\u1eabn chi ti\u1ebft"},"content":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m (DIY ultrasound transducer) l\u00e0 m\u1ed9t d\u1ef1 \u00e1n \u0111\u1ea7y th\u00e1ch th\u1ee9c, \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u1ec1 v\u1eadt l\u00fd, \u0111i\u1ec7n t\u1eed v\u00e0 k\u1ef9 thu\u1eadt si\u00eau \u00e2m. M\u1eb7c d\u00f9 vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ea7u d\u00f2 t\u1ef1 ch\u1ebf th\u01b0\u1eddng kh\u00f4ng th\u1ec3 so s\u00e1nh v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u00e1c kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt c\u1ee7a vi\u1ec7c ch\u1ebf t\u1ea1o \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m, \u0111\u1ed3ng th\u1eddi ph\u00e2n t\u00edch nh\u1eefng kh\u00f3 kh\u0103n v\u00e0 h\u1ea1n ch\u1ebf g\u1eb7p ph\u1ea3i.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 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, chuy\u1ec3n \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.  M\u1ed9t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, th\u01b0\u1eddng l\u00e0 g\u1ed1m PZT (ch\u00ec zirconat titanat), s\u1ebd dao \u0111\u1ed9ng khi c\u00f3 \u0111i\u1ec7n \u00e1p t\u00e1c \u0111\u1ed9ng v\u00e0 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m.  Ng\u01b0\u1ee3c l\u1ea1i, khi s\u00f3ng si\u00eau \u00e2m t\u00e1c \u0111\u1ed9ng v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p.<\/p>\n<h3>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m<\/h3>\n<p>M\u1ed9t \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh sau:<\/p>\n<ul>\n<li><strong>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n:<\/strong> \u0110\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i, ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o v\u00e0 nh\u1eadn s\u00f3ng si\u00eau \u00e2m.<\/li>\n<li><strong>L\u1edbp k\u1ebft h\u1ee3p:<\/strong> L\u1edbp n\u00e0y gi\u00fap truy\u1ec1n t\u1ea3i s\u00f3ng si\u00eau \u00e2m hi\u1ec7u qu\u1ea3 gi\u1eefa v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u1ea7n ki\u1ec3m tra.<\/li>\n<li><strong>V\u1ecf b\u1ea3o v\u1ec7:<\/strong>  B\u1ea3o v\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong kh\u1ecfi t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li><strong>D\u00e2y d\u1eabn:<\/strong> K\u1ebft n\u1ed1i \u0111\u1ea7u d\u00f2 v\u1edbi thi\u1ebft b\u1ecb t\u1ea1o xung v\u00e0 thu nh\u1eadn t\u00edn hi\u1ec7u.<\/li>\n<\/ul>\n<h3>C\u00e1c b\u01b0\u1edbc ch\u1ebf t\u1ea1o \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m<\/h3>\n<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m bao g\u1ed3m c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n sau:<\/p>\n<ol>\n<li><strong>Ch\u1ecdn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n:<\/strong>  L\u1ef1a ch\u1ecdn lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/li>\n<li><strong>Gia c\u00f4ng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n:<\/strong> C\u1eaft v\u00e0 m\u00e0i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n theo h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc mong mu\u1ed1n.<\/li>\n<li><strong>G\u1eafn l\u1edbp k\u1ebft h\u1ee3p:<\/strong> L\u1ef1a ch\u1ecdn v\u00e0 g\u1eafn l\u1edbp k\u1ebft h\u1ee3p l\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n.<\/li>\n<li><strong>L\u1eafp r\u00e1p v\u1ecf b\u1ea3o v\u1ec7:<\/strong>  \u0110\u1eb7t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c g\u1eafn l\u1edbp k\u1ebft h\u1ee3p v\u00e0o v\u1ecf b\u1ea3o v\u1ec7.<\/li>\n<li><strong>K\u1ebft n\u1ed1i d\u00e2y d\u1eabn:<\/strong> H\u00e0n d\u00e2y d\u1eabn v\u00e0o c\u00e1c \u0111i\u1ec7n c\u1ef1c c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n.<\/li>\n<li><strong>Ki\u1ec3m tra v\u00e0 hi\u1ec7u ch\u1ec9nh:<\/strong>  Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 v\u00e0 hi\u1ec7u ch\u1ec9nh c\u00e1c th\u00f4ng s\u1ed1 n\u1ebfu c\u1ea7n.<\/li>\n<\/ol>\n<h3>Kh\u00f3 kh\u0103n v\u00e0 h\u1ea1n ch\u1ebf khi t\u1ef1 ch\u1ebf t\u1ea1o<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Kh\u00f3 kh\u0103n<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/td>\n<td>Kh\u00f3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td>Gia c\u00f4ng ch\u00ednh x\u00e1c<\/td>\n<td>Vi\u1ec7c gia c\u00f4ng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, kh\u00f3 th\u1ef1c hi\u1ec7n t\u1ea1i nh\u00e0.<\/td>\n<\/tr>\n<tr>\n<td>L\u1ef1a ch\u1ecdn l\u1edbp k\u1ebft h\u1ee3p<\/td>\n<td>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 g\u1eafn l\u1edbp k\u1ebft h\u1ee3p ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c.<\/td>\n<\/tr>\n<tr>\n<td>Thi\u1ebft b\u1ecb \u0111o ki\u1ec3m<\/td>\n<td>C\u1ea7n thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra v\u00e0 hi\u1ec7u ch\u1ec9nh \u0111\u1ea7u d\u00f2.<\/td>\n<\/tr>\n<tr>\n<td>Hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng<\/td>\n<td>\u0110\u1ea7u d\u00f2 t\u1ef1 ch\u1ebf th\u01b0\u1eddng c\u00f3 hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng th\u1ea5p h\u01a1n so v\u1edbi s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m t\u1ef1 ch\u1ebf<\/h3>\n<p>M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u h\u1ea1n ch\u1ebf, \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m t\u1ef1 ch\u1ebf v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c nh\u01b0 gi\u00e1o d\u1ee5c, nghi\u00ean c\u1ee9u c\u01a1 b\u1ea3n, ho\u1eb7c c\u00e1c d\u1ef1 \u00e1n c\u00e1 nh\u00e2n v\u1edbi y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u00f4ng qu\u00e1 cao.<\/p>\n<p>T\u1ef1 ch\u1ebf t\u1ea1o \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c v\u00e0 k\u1ef9 n\u0103ng chuy\u00ean m\u00f4n.  M\u1eb7c d\u00f9 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c, nh\u01b0ng vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c l\u1edbn.  \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady cao, vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m th\u01b0\u01a1ng m\u1ea1i v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m (DIY ultrasound transducer) l\u00e0 m\u1ed9t d\u1ef1 \u00e1n \u0111\u1ea7y th\u00e1ch th\u1ee9c, \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u1ec1 v\u1eadt l\u00fd, \u0111i\u1ec7n t\u1eed v\u00e0 k\u1ef9 thu\u1eadt si\u00eau \u00e2m. M\u1eb7c d\u00f9 vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng v\u00e0<\/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-51348","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\/51348","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=51348"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/51348\/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=51348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=51348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=51348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}