{"id":44964,"date":"2023-04-22T03:07:16","date_gmt":"2023-04-22T08:07:16","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-piezoelectric-switch-work\/"},"modified":"2025-01-21T07:12:39","modified_gmt":"2025-01-21T12:12:39","slug":"how-does-piezoelectric-switch-work","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-piezoelectric-switch-work\/","title":{"rendered":"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111\u1eb7c bi\u1ec7t, l\u00e0 n\u1ec1n t\u1ea3ng cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y cho ph\u00e9p m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u, g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, 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 d\u1ea1ng khi c\u00f3 \u0111i\u1ec7n tr\u01b0\u1eddng t\u00e1c \u0111\u1ed9ng l\u00ean ch\u00fang.  Ch\u00ednh kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i n\u00e0y \u0111\u00e3 t\u1ea1o n\u00ean nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n<\/h3>\n<p>Khi m\u1ed9t l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n trong c\u00f4ng t\u1eafc, n\u00f3 l\u00e0m thay \u0111\u1ed5i c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a v\u1eadt li\u1ec7u. S\u1ef1 thay \u0111\u1ed5i n\u00e0y t\u1ea1o ra m\u1ed9t s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n t\u00edch, d\u1eabn \u0111\u1ebfn s\u1ef1 h\u00ecnh th\u00e0nh \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u. \u0110i\u1ec7n \u00e1p n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ec7n \u00e1p \u00e1p \u0111i\u1ec7n.  N\u1ebfu l\u1ef1c t\u00e1c \u0111\u1ed9ng \u0111\u1ee7 l\u1edbn, \u0111i\u1ec7n \u00e1p n\u00e0y s\u1ebd v\u01b0\u1ee3t qu\u00e1 m\u1ed9t ng\u01b0\u1ee1ng nh\u1ea5t \u0111\u1ecbnh, k\u00edch ho\u1ea1t m\u1ea1ch \u0111i\u1ec7n v\u00e0 \u0111\u00f3ng c\u00f4ng t\u1eafc.<\/p>\n<h3>C\u1ea5u t\u1ea1o c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n<\/h3>\n<p>M\u1ed9t c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng bao g\u1ed3m m\u1ed9t mi\u1ebfng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c.  Khi c\u00f3 l\u1ef1c t\u00e1c \u0111\u1ed9ng, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ea1o ra \u0111i\u1ec7n \u00e1p gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c n\u00e0y.  T\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p n\u00e0y \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i v\u00e0 x\u1eed l\u00fd \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n m\u1ea1ch \u0111i\u1ec7n.  V\u1eadt li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 g\u1ed1m \u00e1p \u0111i\u1ec7n, v\u00ed d\u1ee5 nh\u01b0 ch\u00ec zirconat titanat (PZT), do t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u su\u1ea5t cao.<\/p>\n<h3>C\u00e1c lo\u1ea1i c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n kh\u00e1c nhau, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>C\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n d\u1ea1ng n\u00fat:<\/strong>  Lo\u1ea1i n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u1ea7m tay, nh\u01b0 \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n d\u1ea1ng m\u00e0ng:<\/strong>  Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea3m \u1ee9ng, v\u00ed d\u1ee5 nh\u01b0 m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n d\u1ea1ng rung:<\/strong>  Ph\u00e1t hi\u1ec7n rung \u0111\u1ed9ng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng.<\/p>\n<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i c\u00f4ng t\u1eafc<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>N\u00fat<\/td>\n<td>\u0110i\u1ec1u khi\u1ec3n t\u1eeb xa, thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed<\/td>\n<td>K\u00edch th\u01b0\u1edbc nh\u1ecf, \u0111\u1ed9 b\u1ec1n cao<\/td>\n<td>\u0110\u1ed9 nh\u1ea1y c\u00f3 h\u1ea1n<\/td>\n<\/tr>\n<tr>\n<td>M\u00e0ng<\/td>\n<td>M\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng, b\u00e0n ph\u00edm<\/td>\n<td>\u0110\u1ed9 nh\u1ea1y cao, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac l\u1edbn<\/td>\n<td>D\u1ec5 b\u1ecb h\u01b0 h\u1ecfng b\u1edfi l\u1ef1c t\u00e1c \u0111\u1ed9ng m\u1ea1nh<\/td>\n<\/tr>\n<tr>\n<td>Rung<\/td>\n<td>H\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng, c\u1ea3m bi\u1ebfn rung<\/td>\n<td>Ph\u00e1t hi\u1ec7n rung \u0111\u1ed9ng hi\u1ec7u qu\u1ea3<\/td>\n<td>C\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m so v\u1edbi c\u00e1c lo\u1ea1i c\u00f4ng t\u1eafc c\u01a1 h\u1ecdc truy\u1ec1n th\u1ed1ng, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 b\u1ec1n cao:<\/strong> Do kh\u00f4ng c\u00f3 b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng c\u01a1 h\u1ecdc, c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n \u00edt b\u1ecb m\u00e0i m\u00f2n v\u00e0 c\u00f3 tu\u1ed5i th\u1ecd cao h\u01a1n.<\/li>\n<li><strong>K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn:<\/strong>  Cho ph\u00e9p t\u00edch h\u1ee3p v\u00e0o c\u00e1c thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc v\u00e0 b\u1ee5i:<\/strong>  Th\u00edch h\u1ee3p cho c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/li>\n<li><strong>T\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh:<\/strong>  \u0110\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng \u0111\u1ebfn c\u00f4ng nghi\u1ec7p v\u00e0 y t\u1ebf.  M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ti\u00eau bi\u1ec3u bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed:<\/strong>  \u0110i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, m\u00e1y t\u00ednh b\u1ea3ng, \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa.<\/li>\n<li><strong>\u00d4 t\u00f4:<\/strong>  C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t l\u1ed1p, h\u1ec7 th\u1ed1ng t\u00fai kh\u00ed.<\/li>\n<li><strong>Y t\u1ebf:<\/strong>  Thi\u1ebft b\u1ecb si\u00eau \u00e2m (n\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn th\u01b0\u01a1ng hi\u1ec7u, h\u00e3y s\u1eed d\u1ee5ng Beijing Ultrasonic), m\u00e1y \u0111o huy\u1ebft \u00e1p.<\/li>\n<li><strong>C\u00f4ng nghi\u1ec7p:<\/strong>  C\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.  V\u1edbi nhi\u1ec1u \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i nh\u01b0 \u0111\u1ed9 b\u1ec1n cao, k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh, c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n \u0111ang ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, \u0111\u00f3ng g\u00f3p v\u00e0o s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111\u1eb7c bi\u1ec7t, l\u00e0 n\u1ec1n t\u1ea3ng cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng t\u1eafc \u00e1p \u0111i\u1ec7n. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y cho ph\u00e9p m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u, g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, 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 d\u1ea1ng khi c\u00f3<\/p>\n","protected":false},"author":1,"featured_media":26484,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44964","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\/44964","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=44964"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44964\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26484"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}