{"id":48932,"date":"2023-04-21T22:51:54","date_gmt":"2023-04-22T03:51:54","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-a-piezoelectric-sensor\/"},"modified":"2025-01-21T07:17:18","modified_gmt":"2025-01-21T12:17:18","slug":"how-to-make-a-piezoelectric-sensor","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-make-a-piezoelectric-sensor\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn t\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n"},"content":{"rendered":"

C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c c\u01a1 h\u1ecdc th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb microphone v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n cho \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c trong c\u00f4ng nghi\u1ec7p. Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c v\u1edbi m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u v\u00e0 c\u00f4ng c\u1ee5 \u0111\u01a1n gi\u1ea3n. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch l\u00e0m m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n.<\/p>\n

Nguy\u00ean L\u00fd Ho\u1ea1t \u0110\u1ed9ng<\/h3>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. Hi\u1ec7u \u1ee9ng n\u00e0y x\u1ea3y ra khi m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi b\u1ecb t\u00e1c d\u1ee5ng l\u1ef1c c\u01a1 h\u1ecdc. Ng\u01b0\u1ee3c l\u1ea1i, khi \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p v\u00e0o v\u1eadt li\u1ec7u n\u00e0y, ch\u00fang s\u1ebd thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng.<\/p>\n

V\u1eadt Li\u1ec7u C\u1ea7n Thi\u1ebft<\/h3>\n

\u0110\u1ec3 l\u00e0m m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb nh\u1eefng v\u1eadt li\u1ec7u sau:<\/p>\n\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\nM\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
Mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n<\/td>\nC\u00f3 th\u1ec3 t\u00ecm mua \u1edf c\u00e1c c\u1eeda h\u00e0ng \u0111i\u1ec7n t\u1eed.<\/td>\n<\/tr>\n
D\u00e2y d\u1eabn \u0111i\u1ec7n<\/td>\nN\u00ean ch\u1ecdn lo\u1ea1i d\u00e2y \u0111\u1ed3ng nh\u1ecf, m\u1ec1m d\u1ebbo.<\/td>\n<\/tr>\n
Keo d\u1eabn \u0111i\u1ec7n<\/td>\n\u0110\u1ec3 k\u1ebft n\u1ed1i d\u00e2y d\u1eabn v\u1edbi mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n.<\/td>\n<\/tr>\n
V\u1eadt li\u1ec7u n\u1ec1n<\/td>\nNh\u01b0 m\u1ed9t mi\u1ebfng nh\u1ef1a c\u1ee9ng ho\u1eb7c g\u1ed7 m\u1ecfng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c B\u01b0\u1edbc Th\u1ef1c Hi\u1ec7n<\/h3>\n
    \n
  1. \n

    Chu\u1ea9n b\u1ecb mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n:<\/strong> L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t mi\u1ebfng g\u1ed1m b\u1eb1ng c\u1ed3n ho\u1eb7c dung d\u1ecbch v\u1ec7 sinh \u0111i\u1ec7n t\u1eed.<\/p>\n<\/li>\n

  2. \n

    G\u1eafn d\u00e2y d\u1eabn:<\/strong> H\u00e0n ho\u1eb7c d\u00f9ng keo d\u1eabn \u0111i\u1ec7n \u0111\u1ec3 g\u1eafn m\u1ed9t \u0111\u1ea7u d\u00e2y d\u1eabn v\u00e0o m\u1ed7i m\u1eb7t c\u1ee7a mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n. \u0110\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn v\u00e0 kh\u00f4ng b\u1ecb ch\u1eadp m\u1ea1ch.<\/p>\n<\/li>\n

  3. \n

    C\u1ed1 \u0111\u1ecbnh mi\u1ebfng g\u1ed1m:<\/strong> D\u00e1n mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n l\u00ean v\u1eadt li\u1ec7u n\u1ec1n b\u1eb1ng keo. \u0110\u1ea3m b\u1ea3o mi\u1ebfng g\u1ed1m \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh ch\u1eafc ch\u1eafn v\u00e0 kh\u00f4ng b\u1ecb d\u1ecbch chuy\u1ec3n.<\/p>\n<\/li>\n

  4. \n

    Ki\u1ec3m tra:<\/strong> Sau khi keo kh\u00f4, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra c\u1ea3m bi\u1ebfn b\u1eb1ng c\u00e1ch t\u00e1c d\u1ee5ng l\u1ef1c l\u00ean mi\u1ebfng g\u1ed1m v\u00e0 \u0111o \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng.<\/p>\n<\/li>\n<\/ol>\n

    \u1ee8ng D\u1ee5ng C\u1ee7a C\u1ea3m Bi\u1ebfn \u00c1p \u0110i\u1ec7n T\u1ef1 Ch\u1ebf<\/h3>\n

    C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n

      \n
    • C\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng:<\/strong> Ph\u00e1t hi\u1ec7n rung \u0111\u1ed9ng c\u1ee7a m\u00e1y m\u00f3c ho\u1eb7c c\u00e1c v\u1eadt th\u1ec3 kh\u00e1c.<\/li>\n
    • C\u1ea3m bi\u1ebfn \u00e1p l\u1ef1c:<\/strong> \u0110o l\u01b0\u1eddng \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t b\u1ec1 m\u1eb7t.<\/li>\n
    • Microphone \u0111\u01a1n gi\u1ea3n:<\/strong> Chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n.<\/li>\n<\/ul>\n

      Vi\u1ec7c t\u1ef1 l\u00e0m m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p v\u00e0 c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y. Tuy nhi\u00ean, c\u1ea3m bi\u1ebfn t\u1ef1 ch\u1ebf th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 nh\u1ea1y v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c th\u1ea5p h\u01a1n so v\u1edbi c\u1ea3m bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, n\u00ean s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n chuy\u00ean d\u1ee5ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

      C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c c\u01a1 h\u1ecdc th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb microphone v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n cho \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c trong c\u00f4ng nghi\u1ec7p. Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p<\/p>\n","protected":false},"author":1,"featured_media":26466,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-48932","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\/48932","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=48932"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/48932\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26466"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=48932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=48932"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=48932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}