{"id":44188,"date":"2023-04-25T16:22:22","date_gmt":"2023-04-25T21:22:22","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-piezo-element\/"},"modified":"2025-01-21T07:28:15","modified_gmt":"2025-01-21T12:28:15","slug":"what-is-a-piezo-element","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-a-piezo-element\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 Nguy\u00ean l\u00fd Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a V\u1eadt li\u1ec7u \u00c1p \u0111i\u1ec7n"},"content":{"rendered":"

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd k\u1ef3 di\u1ec7u, l\u00e0 n\u1ec1n t\u1ea3ng cho s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c linh ki\u1ec7n \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 piezo element. Nh\u1eefng linh ki\u1ec7n nh\u1ecf b\u00e9 n\u00e0y c\u00f3 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. S\u1ef1 chuy\u1ec3n \u0111\u1ed5i n\u00e0y m\u1edf ra c\u00e1nh c\u1eeda cho v\u00f4 s\u1ed1 \u1ee9ng d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, t\u1eeb nh\u1eefng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed quen thu\u1ed9c cho \u0111\u1ebfn nh\u1eefng c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn trong y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o t\u00ecm hi\u1ec3u v\u1ec1 piezo element, c\u1ea5u tr\u00fac, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u0169ng nh\u01b0 \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng c\u1ee7a ch\u00fang.<\/p>\n

C\u1ea5u tr\u00fac c\u1ee7a Piezo Element<\/h3>\n

Piezo element th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n nh\u01b0 ch\u00ec zirconat titanat (PZT) ho\u1eb7c c\u00e1c tinh th\u1ec3 th\u1ea1ch anh. C\u1ea5u tr\u00fac c\u1ee7a ch\u00fang bao g\u1ed3m m\u1ed9t mi\u1ebfng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c k\u1eb9p gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c. Khi v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb t\u00e1c \u0111\u1ed9ng b\u1edfi m\u1ed9t l\u1ef1c c\u01a1 h\u1ecdc, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t. Ng\u01b0\u1ee3c l\u1ea1i, khi \u0111\u1eb7t m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0o hai \u0111i\u1ec7n c\u1ef1c, v\u1eadt li\u1ec7u s\u1ebd bi\u1ebfn d\u1ea1ng, t\u1ea1o ra m\u1ed9t l\u1ef1c c\u01a1 h\u1ecdc.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a piezo element d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. Hi\u1ec7u \u1ee9ng n\u00e0y x\u1ea3y ra do s\u1ef1 thay \u0111\u1ed5i ph\u00e2n c\u1ef1c \u0111i\u1ec7n trong v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc. S\u1ef1 thay \u0111\u1ed5i ph\u00e2n c\u1ef1c n\u00e0y t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng v\u00e0 do \u0111\u00f3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u. Qu\u00e1 tr\u00ecnh ng\u01b0\u1ee3c l\u1ea1i c\u0169ng t\u01b0\u01a1ng t\u1ef1, khi \u0111\u1eb7t m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0o hai \u0111i\u1ec7n c\u1ef1c, v\u1eadt li\u1ec7u s\u1ebd b\u1ecb ph\u00e2n c\u1ef1c v\u00e0 bi\u1ebfn d\u1ea1ng.<\/p>\n

C\u00e1c lo\u1ea1i Piezo Element<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i piezo element kh\u00e1c nhau, \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean h\u00ecnh d\u1ea1ng v\u00e0 ch\u1ee9c n\u0103ng. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n\n\n\n\n
Lo\u1ea1i Piezo Element<\/th>\nH\u00ecnh d\u1ea1ng<\/th>\n\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
Piezo d\u1ea1ng \u0111\u0129a<\/td>\nH\u00ecnh tr\u00f2n, ph\u1eb3ng<\/td>\nLoa, microphone<\/td>\n<\/tr>\n
Piezo d\u1ea1ng \u1ed1ng<\/td>\nH\u00ecnh tr\u1ee5 r\u1ed7ng<\/td>\nC\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t<\/td>\n<\/tr>\n
Piezo d\u1ea1ng bimorph<\/td>\nHai mi\u1ebfng piezo gh\u00e9p l\u1ea1i<\/td>\n\u0110\u1ed9ng c\u01a1 rung, m\u00e1y t\u1ea1o \u1ea9m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8ng d\u1ee5ng c\u1ee7a Piezo Element<\/h3>\n

Piezo element c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau:<\/p>\n

    \n
  • Trong \u0111\u1eddi s\u1ed1ng:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u1eadt l\u1eeda, loa, microphone, \u0111\u1ed3ng h\u1ed3 th\u1ea1ch anh.<\/li>\n
  • Trong y t\u1ebf:<\/strong> \u1ee8ng d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb si\u00eau \u00e2m ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh, m\u00e1y si\u00eau \u00e2m \u0111i\u1ec1u tr\u1ecb, thi\u1ebft b\u1ecb ph\u1eabu thu\u1eadt. N\u1ebfu n\u00f3i v\u1ec1 thi\u1ebft b\u1ecb si\u00eau \u00e2m, c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn c\u00e1c h\u00e3ng s\u1ea3n xu\u1ea5t nh\u01b0 Beijing Ultrasonic.<\/li>\n
  • Trong c\u00f4ng nghi\u1ec7p:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, c\u1ea3m bi\u1ebfn gia t\u1ed1c, \u0111\u1ed9ng c\u01a1 rung, m\u00e1y t\u1ea1o \u1ea9m, m\u00e1y in phun.<\/li>\n
  • Trong khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt:<\/strong> \u1ee8ng d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c, thi\u1ebft b\u1ecb t\u1ea1o s\u00f3ng si\u00eau \u00e2m, thi\u1ebft b\u1ecb nghi\u00ean c\u1ee9u v\u1eadt li\u1ec7u.<\/li>\n<\/ul>\n

    \u01afu \u0111i\u1ec3m v\u00e0 Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h3>\n\n\n\n\n\n\n\n
    \u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
    K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn<\/td>\n\u0110\u1ed9 nh\u1ea1y v\u1edbi nhi\u1ec7t \u0111\u1ed9<\/td>\n<\/tr>\n
    \u0110\u1ed9 b\u1ec1n cao<\/td>\nD\u1ec5 b\u1ecb h\u1ecfng khi ch\u1ecbu l\u1ef1c qu\u00e1 l\u1edbn<\/td>\n<\/tr>\n
    Th\u1eddi gian \u0111\u00e1p \u1ee9ng nhanh<\/td>\n\u0110i\u1ec7n \u00e1p \u0111\u1ea7u ra th\u1ea5p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    T\u00f3m l\u1ea1i, piezo element l\u00e0 m\u1ed9t linh ki\u1ec7n \u0111a n\u0103ng v\u1edbi 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. V\u1edbi c\u1ea5u tr\u00fac \u0111\u01a1n gi\u1ea3n, hi\u1ec7u su\u1ea5t cao v\u00e0 \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng, piezo element \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c c\u1ee7a cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i v\u00e0 h\u1ee9a h\u1eb9n s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd k\u1ef3 di\u1ec7u, l\u00e0 n\u1ec1n t\u1ea3ng cho s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c linh ki\u1ec7n \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 piezo element. Nh\u1eefng linh ki\u1ec7n nh\u1ecf b\u00e9 n\u00e0y c\u00f3 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. S\u1ef1 chuy\u1ec3n \u0111\u1ed5i<\/p>\n","protected":false},"author":1,"featured_media":23767,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44188","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\/44188","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=44188"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44188\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23767"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44188"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44188"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44188"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}