{"id":48940,"date":"2023-04-21T22:50:42","date_gmt":"2023-04-22T03:50:42","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-a-piezo-transducer\/"},"modified":"2025-01-21T07:17:14","modified_gmt":"2025-01-21T12:17:14","slug":"how-to-make-a-piezo-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-make-a-piezo-transducer\/","title":{"rendered":"T\u1ef1 ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"<p>Vi\u1ec7c ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n (piezo transducer) \u0111\u00f2i h\u1ecfi s\u1ef1 t\u1ec9 m\u1ec9 v\u00e0 ki\u1ebfn th\u1ee9c v\u1ec1 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt li\u00ean quan. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n, t\u1eadp trung v\u00e0o nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n<\/h3>\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n 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 th\u1ea1ch anh, g\u1ed1m PZT) t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, bi\u1ebfn \u0111\u1ed5i \u0111i\u1ec7n \u00e1p th\u00e0nh dao \u0111\u1ed9ng c\u01a1 h\u1ecdc.  Khi \u00e1p d\u1ee5ng m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i theo t\u1ea7n s\u1ed1 c\u1ee7a \u0111i\u1ec7n \u00e1p, t\u1ea1o ra s\u00f3ng \u00e2m.<\/p>\n<h3>Ch\u1ecdn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n<p>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n l\u00e0 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. G\u1ed1m PZT (ch\u00ec zirconat titanat) l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1edd hi\u1ec7u su\u1ea5t cao v\u00e0 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd.  B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y so s\u00e1nh m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng d\u00f9ng:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>V\u1eadt li\u1ec7u<\/th>\n<th>Hi\u1ec7u su\u1ea5t<\/th>\n<th>Gi\u00e1 th\u00e0nh<\/th>\n<th>\u0110\u1ed9 b\u1ec1n<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Th\u1ea1ch anh<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Cao<\/td>\n<td>T\u1ed1t<\/td>\n<td>\u0110\u1ed3ng h\u1ed3, c\u1ea3m bi\u1ebfn ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n<tr>\n<td>G\u1ed1m PZT<\/td>\n<td>Cao<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Kh\u00e1<\/td>\n<td>Loa, m\u00e1y si\u00eau \u00e2m<\/td>\n<\/tr>\n<tr>\n<td>PVDF<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Th\u1ea5p<\/td>\n<td>T\u1ed1t<\/td>\n<td>C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, micro<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u<\/h3>\n<p>B\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 \u0111\u00e1nh b\u00f3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac t\u1ed1t v\u1edbi c\u00e1c \u0111i\u1ec7n c\u1ef1c. C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng gi\u1ea5y nh\u00e1m m\u1ecbn ho\u1eb7c dung d\u1ecbch \u0111\u00e1nh b\u00f3ng chuy\u00ean d\u1ee5ng.<\/p>\n<h3>G\u1eafn \u0111i\u1ec7n c\u1ef1c<\/h3>\n<p>\u0110i\u1ec7n c\u1ef1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng b\u1ea1c ho\u1eb7c v\u00e0ng do t\u00ednh d\u1eabn \u0111i\u1ec7n t\u1ed1t.  Ch\u00fang \u0111\u01b0\u1ee3c g\u1eafn l\u00ean hai m\u1eb7t c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1eb1ng keo d\u1eabn \u0111i\u1ec7n.  C\u1ea7n \u0111\u1ea3m b\u1ea3o \u0111i\u1ec7n c\u1ef1c \u0111\u01b0\u1ee3c g\u1eafn ch\u1eafc ch\u1eafn v\u00e0 kh\u00f4ng b\u1ecb bong tr\u00f3c.<\/p>\n<h3>Bao b\u1ecdc v\u00e0 b\u1ea3o v\u1ec7<\/h3>\n<p>Sau khi g\u1eafn \u0111i\u1ec7n c\u1ef1c, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i c\u1ea7n \u0111\u01b0\u1ee3c bao b\u1ecdc b\u1eb1ng v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi m\u00f4i tr\u01b0\u1eddng v\u00e0 tr\u00e1nh \u0111o\u1ea3n m\u1ea1ch.  C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng epoxy ho\u1eb7c silicone.<\/p>\n<h3>Ki\u1ec3m tra v\u00e0 hi\u1ec7u ch\u1ec9nh<\/h3>\n<p>Sau khi ho\u00e0n th\u00e0nh, c\u1ea7n ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i b\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0 \u0111o t\u00edn hi\u1ec7u \u0111\u1ea7u ra.  N\u1ebfu c\u1ea7n thi\u1ebft, c\u00f3 th\u1ec3 hi\u1ec7u ch\u1ec9nh b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y ho\u1eb7c h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n.<\/p>\n<p>Vi\u1ec7c ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n tuy kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p nh\u01b0ng \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c v\u00e0 t\u1ec9 m\u1ec9 trong t\u1eebng b\u01b0\u1edbc.  Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p nh\u1eefng th\u00f4ng tin h\u1eefu \u00edch gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 quy tr\u00ecnh ch\u1ebf t\u1ea1o v\u00e0 c\u00f3 th\u1ec3 t\u1ef1 tay th\u1ef1c hi\u1ec7n.  Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, n\u00ean s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t chuy\u00ean nghi\u1ec7p.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n (piezo transducer) \u0111\u00f2i h\u1ecfi s\u1ef1 t\u1ec9 m\u1ec9 v\u00e0 ki\u1ebfn th\u1ee9c v\u1ec1 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt li\u00ean quan. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n, t\u1eadp trung v\u00e0o nguy\u00ean l\u00fd ho\u1ea1t<\/p>\n","protected":false},"author":1,"featured_media":19416,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-48940","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\/48940","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=48940"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/48940\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/19416"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=48940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=48940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=48940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}