{"id":52020,"date":"2023-04-21T13:13:58","date_gmt":"2023-04-21T18:13:58","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-piezoelectric-transducer\/"},"modified":"2025-01-21T07:08:57","modified_gmt":"2025-01-21T12:08:57","slug":"diy-piezoelectric-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-piezoelectric-transducer\/","title":{"rendered":"T\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n: Kh\u00e1m ph\u00e1 v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

Piezoelectric 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 \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. \u0110i\u1ec1u n\u00e0y m\u1edf ra kh\u1ea3 n\u0103ng t\u1ef1 ch\u1ebf t\u1ea1o c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i piezoelectric (transducer) cho nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u00fa v\u1ecb, t\u1eeb c\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng \u0111\u1ebfn thu th\u1eadp n\u0103ng l\u01b0\u1ee3ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n qua quy tr\u00ecnh t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i piezoelectric \u0111\u01a1n gi\u1ea3n v\u00e0 t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i Piezoelectric<\/h3>\n

Hi\u1ec7u \u1ee9ng piezoelectric l\u00e0 ch\u00eca kh\u00f3a cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. Khi m\u1ed9t v\u1eadt li\u1ec7u piezoelectric b\u1ecb bi\u1ebfn d\u1ea1ng do \u00e1p l\u1ef1c, s\u1ef1 ph\u00e2n b\u1ed1 \u0111i\u1ec7n t\u00edch b\u00ean trong n\u00f3 thay \u0111\u1ed5i, t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t. Ng\u01b0\u1ee3c l\u1ea1i, khi \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p, v\u1eadt li\u1ec7u s\u1ebd thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p b\u1ed9 chuy\u1ec3n \u0111\u1ed5i 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.<\/p>\n

V\u1eadt li\u1ec7u Piezoelectric th\u00f4ng d\u1ee5ng<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u piezoelectric kh\u00e1c nhau, m\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1eb7c t\u00ednh ri\u00eang. M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/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
G\u1ed1m PZT (Lead Zirconate Titanate)<\/td>\n\u0110\u1ed9 nh\u1ea1y cao, gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd<\/td>\nCh\u1ee9a ch\u00ec (Pb)<\/td>\n<\/tr>\n
PVDF (Polyvinylidene Fluoride)<\/td>\nLinh ho\u1ea1t, d\u1ebbo dai<\/td>\n\u0110\u1ed9 nh\u1ea1y th\u1ea5p h\u01a1n PZT<\/td>\n<\/tr>\n
Tinh th\u1ec3 th\u1ea1ch anh<\/td>\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh cao<\/td>\nGi\u00e1 th\u00e0nh cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u1ed1i v\u1edbi d\u1ef1 \u00e1n DIY, g\u1ed1m PZT th\u01b0\u1eddng l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t do s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 chi ph\u00ed.<\/p>\n

Ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i Piezoelectric \u0111\u01a1n gi\u1ea3n<\/h3>\n

\u0110\u1ec3 ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n gi\u1ea3n, b\u1ea1n c\u1ea7n:<\/p>\n

    \n
  • M\u1ed9t \u0111\u0129a g\u1ed1m piezoelectric.<\/li>\n
  • D\u00e2y d\u1eabn \u0111i\u1ec7n m\u1ecfng.<\/li>\n
  • M\u1ecf h\u00e0n.<\/li>\n
  • Keo d\u1eabn \u0111i\u1ec7n (t\u00f9y ch\u1ecdn).<\/li>\n<\/ul>\n

    C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n:<\/p>\n

      \n
    1. H\u00e0n d\u00e2y d\u1eabn v\u00e0o hai m\u1eb7t c\u1ee7a \u0111\u0129a piezoelectric. S\u1eed d\u1ee5ng keo d\u1eabn \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn n\u1ebfu c\u1ea7n.<\/li>\n
    2. Ki\u1ec3m tra k\u1ebft n\u1ed1i b\u1eb1ng c\u00e1ch g\u00f5 nh\u1eb9 v\u00e0o \u0111\u0129a. B\u1ea1n s\u1ebd th\u1ea5y m\u1ed9t \u0111i\u1ec7n \u00e1p nh\u1ecf \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng.<\/li>\n<\/ol>\n

      \u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i Piezoelectric t\u1ef1 ch\u1ebf<\/h3>\n

      B\u1ed9 chuy\u1ec3n \u0111\u1ed5i piezoelectric t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, bao g\u1ed3m:<\/p>\n

        \n
      • C\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng: Ph\u00e1t hi\u1ec7n rung \u0111\u1ed9ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n.<\/li>\n
      • Thu th\u1eadp n\u0103ng l\u01b0\u1ee3ng: Chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc t\u1eeb rung \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng th\u00e0nh \u0111i\u1ec7n n\u0103ng.<\/li>\n
      • Loa \u0111\u01a1n gi\u1ea3n: \u00c1p d\u1ee5ng t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra \u00e2m thanh.<\/li>\n<\/ul>\n

        Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 l\u01b0u \u00fd<\/h3>\n
          \n
        • \u0110\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i d\u00e2y d\u1eabn ch\u1eafc ch\u1eafn \u0111\u1ec3 tr\u00e1nh t\u00edn hi\u1ec7u y\u1ebfu.<\/li>\n
        • Tr\u00e1nh l\u00e0m r\u01a1i ho\u1eb7c va \u0111\u1eadp m\u1ea1nh v\u00e0o \u0111\u0129a piezoelectric, v\u00ec n\u00f3 c\u00f3 th\u1ec3 b\u1ecb v\u1ee1.<\/li>\n
        • \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi t\u1ea7n s\u1ed1 cao, c\u1ea7n xem x\u00e9t c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u piezoelectric ph\u00f9 h\u1ee3p.<\/li>\n<\/ul>\n

          Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i piezoelectric l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 mang t\u00ednh gi\u00e1o d\u1ee5c, cho ph\u00e9p b\u1ea1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi c\u1ee7a hi\u1ec7u \u1ee9ng piezoelectric v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3. M\u1eb7c d\u00f9 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t nh\u01b0 c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i, nh\u01b0ng n\u00f3 cung c\u1ea5p m\u1ed9t n\u1ec1n t\u1ea3ng tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u00ecm hi\u1ec3u v\u00e0 th\u1eed nghi\u1ec7m v\u1edbi c\u00f4ng ngh\u1ec7 n\u00e0y. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n \u0111\u1ec3 b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh kh\u00e1m ph\u00e1 piezoelectric c\u1ee7a ri\u00eang m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Piezoelectric 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 \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. \u0110i\u1ec1u n\u00e0y m\u1edf ra kh\u1ea3 n\u0103ng t\u1ef1 ch\u1ebf t\u1ea1o c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i piezoelectric (transducer) cho nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u00fa v\u1ecb, t\u1eeb c\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng \u0111\u1ebfn thu<\/p>\n","protected":false},"author":1,"featured_media":19422,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-52020","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\/52020","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=52020"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/52020\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/19422"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=52020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=52020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=52020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}