{"id":50604,"date":"2023-04-21T14:41:09","date_gmt":"2023-04-21T19:41:09","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-piezoelectric-transducer-work\/"},"modified":"2025-01-21T07:12:40","modified_gmt":"2025-01-21T12:12:40","slug":"how-does-piezoelectric-transducer-work","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-piezoelectric-transducer-work\/","title":{"rendered":"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \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 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n. \u0110\u1ea7u d\u00f2 n\u00e0y, m\u1ed9t thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn nh\u01b0ng v\u00f4 c\u00f9ng h\u1eefu \u00edch, 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. Nh\u1edd t\u00ednh linh ho\u1ea1t n\u00e0y, ch\u00fang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n, gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 nguy\u00ean l\u00fd v\u1eadt l\u00fd \u0111\u1eb1ng sau kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111\u1ed9c \u0111\u00e1o c\u1ee7a n\u00f3.<\/p>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp v\u00e0 ngh\u1ecbch \u0111\u1ea3o<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp v\u00e0 hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u1ea3o. Hi\u1ec7u \u1ee9ng tr\u1ef1c ti\u1ebfp m\u00f4 t\u1ea3 vi\u1ec7c t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ecb n\u00e9n ho\u1eb7c k\u00e9o gi\u00e3n. Ng\u01b0\u1ee3c l\u1ea1i, hi\u1ec7u \u1ee9ng ngh\u1ecbch \u0111\u1ea3o x\u1ea3y ra khi v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng. \u0110\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n t\u1eadn d\u1ee5ng c\u1ea3 hai hi\u1ec7u \u1ee9ng n\u00e0y \u0111\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng.<\/p>\n

C\u1ea5u t\u1ea1o c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n<\/h3>\n

\u0110\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (v\u00ed d\u1ee5: PZT) ho\u1eb7c polyme \u00e1p \u0111i\u1ec7n (v\u00ed d\u1ee5: PVDF). V\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c k\u1eb9p gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c. Khi m\u1ed9t l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u, n\u00f3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c nh\u1edd hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp. Ng\u01b0\u1ee3c l\u1ea1i, khi m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o hai \u0111i\u1ec7n c\u1ef1c, v\u1eadt li\u1ec7u s\u1ebd bi\u1ebfn d\u1ea1ng do hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u1ea3o, t\u1ea1o ra s\u00f3ng c\u01a1 h\u1ecdc.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2<\/h3>\n

Hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a \u0111\u1ea7u d\u00f2, t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n\n\n\n\n\n
Y\u1ebfu t\u1ed1<\/th>\n\u1ea2nh h\u01b0\u1edfng<\/th>\n<\/tr>\n<\/thead>\n
V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/td>\n\u0110\u1ed9 nh\u1ea1y, d\u1ea3i t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng<\/td>\n<\/tr>\n
K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng<\/td>\nC\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u, h\u01b0\u1edbng s\u00f3ng<\/td>\n<\/tr>\n
T\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng<\/td>\nHi\u1ec7u su\u1ea5t chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9<\/td>\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8ng d\u1ee5ng c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n<\/h3>\n

\u0110\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n

    \n
  • Y t\u1ebf:<\/strong> \u0110\u1ea7u d\u00f2 si\u00eau \u00e2m s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra h\u00ecnh \u1ea3nh b\u00ean trong c\u01a1 th\u1ec3. <\/li>\n
  • C\u00f4ng nghi\u1ec7p:<\/strong> \u0110\u1ea7u d\u00f2 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u1ed9 d\u00e0y, ph\u00e1t hi\u1ec7n l\u1ed7i trong v\u1eadt li\u1ec7u, v\u00e0 ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. (V\u00ed d\u1ee5: m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb si\u00eau \u00e2m c\u00f4ng nghi\u1ec7p c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 t\u1eeb c\u00e1c h\u00e3ng nh\u01b0 Beijing Ultrasonic, n\u1ebfu c\u1ea7n thi\u1ebft cho ng\u1eef c\u1ea3nh c\u1ee5 th\u1ec3.)<\/li>\n
  • \u0110\u1eddi s\u1ed1ng:<\/strong> \u0110\u1ea7u d\u00f2 c\u00f3 m\u1eb7t trong c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 b\u1eadt l\u1eeda, microphone, v\u00e0 loa.<\/li>\n<\/ul>\n

    T\u00f3m l\u1ea1i, \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111a n\u0103ng v\u1edbi kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111\u1ed9c \u0111\u00e1o d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. S\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3 l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 \u1ee9ng d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00f4ng ngh\u1ec7 n\u00e0y trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, g\u00f3p ph\u1ea7n n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c s\u1ed1ng v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7.<\/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 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n. \u0110\u1ea7u d\u00f2 n\u00e0y, m\u1ed9t thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn nh\u01b0ng v\u00f4 c\u00f9ng h\u1eefu \u00edch, 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. Nh\u1edd t\u00ednh linh ho\u1ea1t<\/p>\n","protected":false},"author":1,"featured_media":19412,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-50604","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\/50604","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=50604"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50604\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/19412"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=50604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=50604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=50604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}