{"id":44476,"date":"2023-04-25T14:50:31","date_gmt":"2023-04-25T19:50:31","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-piezo-transducer\/"},"modified":"2025-01-21T07:28:54","modified_gmt":"2025-01-21T12:28:54","slug":"what-is-piezo-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-piezo-transducer\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n: Nguy\u00ean l\u00fd v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

\u00c1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, n\u01a1i m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n t\u00edch khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb b\u1eadt l\u1eeda gas \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf ph\u1ee9c t\u1ea1p, v\u00e0 trung t\u00e2m c\u1ee7a nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0y ch\u00ednh l\u00e0 c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 transducer \u00e1p \u0111i\u1ec7n. V\u1eady ch\u00ednh x\u00e1c transducer \u00e1p \u0111i\u1ec7n l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a transducer \u00e1p \u0111i\u1ec7n<\/h3>\n

Transducer \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. Khi m\u1ed9t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb n\u00e9n ho\u1eb7c k\u00e9o gi\u00e3n, c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a n\u00f3 thay \u0111\u1ed5i, t\u1ea1o ra s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n t\u00edch tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u. S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng n\u00e0y bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng \u0111i\u1ec7n \u00e1p. Ng\u01b0\u1ee3c l\u1ea1i, khi \u0111\u1eb7t m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng, co l\u1ea1i ho\u1eb7c gi\u00e3n ra t\u00f9y thu\u1ed9c v\u00e0o c\u1ef1c c\u1ee7a \u0111i\u1ec7n \u00e1p.<\/p>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n

M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u th\u1ec3 hi\u1ec7n t\u00ednh ch\u1ea5t \u00e1p \u0111i\u1ec7n, bao g\u1ed3m th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (nh\u01b0 PZT – ch\u00ec zirconate titanate) v\u00e0 polyme (nh\u01b0 PVDF – polyvinylidene fluoride). M\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang, \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, th\u1ea1ch anh c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao, trong khi g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n cao h\u01a1n.<\/p>\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
Th\u1ea1ch anh<\/td>\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh cao, tuy\u1ebfn t\u00ednh t\u1ed1t<\/td>\nHi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n th\u1ea5p<\/td>\n<\/tr>\n
G\u1ed1m \u00e1p \u0111i\u1ec7n (PZT)<\/td>\nHi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n cao<\/td>\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00e9m h\u01a1n th\u1ea1ch anh<\/td>\n<\/tr>\n
Polyme (PVDF)<\/td>\nLinh ho\u1ea1t, nh\u1eb9<\/td>\nHi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n th\u1ea5p h\u01a1n g\u1ed1m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c lo\u1ea1i transducer \u00e1p \u0111i\u1ec7n<\/h3>\n

Transducer \u00e1p \u0111i\u1ec7n c\u00f3 nhi\u1ec1u lo\u1ea1i 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

    \n
  • Transducer \u00e1p \u0111i\u1ec7n c\u1ea3m bi\u1ebfn:<\/strong> Chuy\u1ec3n \u0111\u1ed5i \u00e1p su\u1ea5t ho\u1eb7c l\u1ef1c th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, gia t\u1ed1c k\u1ebf v\u00e0 c\u1ea3m bi\u1ebfn l\u1ef1c.<\/li>\n
  • Transducer \u00e1p \u0111i\u1ec7n ph\u00e1t:<\/strong> Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh rung \u0111\u1ed9ng c\u01a1 h\u1ecdc. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong loa si\u00eau \u00e2m, m\u00e1y t\u1ea1o s\u00f3ng si\u00eau \u00e2m (n\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn th\u01b0\u01a1ng hi\u1ec7u trong ng\u1eef c\u1ea3nh si\u00eau \u00e2m, h\u00e3y s\u1eed d\u1ee5ng Beijing Ultrasonic), v\u00e0 c\u00e1c thi\u1ebft b\u1ecb l\u00e0m s\u1ea1ch b\u1eb1ng si\u00eau \u00e2m.<\/li>\n
  • Transducer \u00e1p \u0111i\u1ec7n k\u1ebft h\u1ee3p:<\/strong> K\u1ebft h\u1ee3p c\u1ea3 ch\u1ee9c n\u0103ng c\u1ea3m bi\u1ebfn v\u00e0 ph\u00e1t. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 \u0111o kho\u1ea3ng c\u00e1ch b\u1eb1ng si\u00eau \u00e2m.<\/li>\n<\/ul>\n

    \u1ee8ng d\u1ee5ng c\u1ee7a transducer \u00e1p \u0111i\u1ec7n<\/h3>\n

    Transducer \u00e1p \u0111i\u1ec7n c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m:<\/p>\n

      \n
    • Y t\u1ebf:<\/strong> M\u00e1y si\u00eau \u00e2m, m\u00e1y \u0111o huy\u1ebft \u00e1p, thi\u1ebft b\u1ecb theo d\u00f5i nh\u1ecbp tim.<\/li>\n
    • C\u00f4ng nghi\u1ec7p:<\/strong> C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, c\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng, ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y.<\/li>\n
    • \u00d4 t\u00f4:<\/strong> C\u1ea3m bi\u1ebfn t\u00fai kh\u00ed, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t l\u1ed1p.<\/li>\n
    • \u0110i\u1ec7n t\u1eed ti\u00eau d\u00f9ng:<\/strong> B\u1eadt l\u1eeda gas, loa, microphone.<\/li>\n<\/ul>\n

      T\u00f3m l\u1ea1i, transducer \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb linh ho\u1ea1t v\u00e0 h\u1eefu \u00edch, khai th\u00e1c hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc v\u00e0 n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n. V\u1edbi s\u1ef1 \u0111a d\u1ea1ng v\u1ec1 v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf, transducer \u00e1p \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i, t\u1eeb y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed h\u00e0ng ng\u00e0y. S\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c c\u1ee7a c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o h\u1ee9a h\u1eb9n s\u1ebd m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng m\u1edbi v\u00e0 ti\u1ec1m n\u0103ng h\u01a1n n\u1eefa cho transducer \u00e1p \u0111i\u1ec7n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u00c1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, n\u01a1i m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n t\u00edch khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb b\u1eadt l\u1eeda gas \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf ph\u1ee9c t\u1ea1p, v\u00e0 trung t\u00e2m c\u1ee7a nh\u1eefng \u1ee9ng<\/p>\n","protected":false},"author":1,"featured_media":24653,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44476","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\/44476","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=44476"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44476\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24653"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}