{"id":54712,"date":"2022-07-11T17:54:43","date_gmt":"2022-07-11T22:54:43","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/are-piezo-devices-used-in-everyday-objects\/"},"modified":"2025-01-21T07:05:50","modified_gmt":"2025-01-21T12:05:50","slug":"are-piezo-devices-used-in-everyday-objects","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/are-piezo-devices-used-in-everyday-objects\/","title":{"rendered":"Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n: \u1ee8ng d\u1ee5ng b\u1ea5t ng\u1edd quanh ta"},"content":{"rendered":"

Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, bi\u1ebfn d\u1ea1ng khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng. Tuy c\u00f3 v\u1ebb nh\u01b0 m\u1ed9t c\u00f4ng ngh\u1ec7 cao c\u1ea5p, th\u1ef1c t\u1ebf l\u00e0 thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n \u0111\u00e3 len l\u1ecfi v\u00e0o r\u1ea5t nhi\u1ec1u v\u1eadt d\u1ee5ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta, \u0111\u00f3ng g\u00f3p m\u1ed9t ph\u1ea7n kh\u00f4ng nh\u1ecf v\u00e0o s\u1ef1 ti\u1ec7n l\u1ee3i v\u00e0 hi\u1ec7n \u0111\u1ea1i c\u1ee7a cu\u1ed9c s\u1ed1ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n trong c\u00e1c \u0111\u1ed3 v\u1eadt xung quanh ta.<\/p>\n

Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n trong \u0111\u00e1nh l\u1eeda<\/h3>\n

M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng d\u1ec5 th\u1ea5y nh\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n ch\u00ednh l\u00e0 trong b\u1eadt l\u1eeda gas. Khi b\u1ea1n nh\u1ea5n n\u00fat b\u1eadt l\u1eeda, m\u1ed9t b\u00faa nh\u1ecf b\u00ean trong s\u1ebd t\u00e1c \u0111\u1ed9ng l\u00ean m\u1ed9t mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n. L\u1ef1c t\u00e1c \u0111\u1ed9ng n\u00e0y t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p cao, ph\u00f3ng ra tia l\u1eeda \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ed1t ch\u00e1y kh\u00ed gas.<\/p>\n

Loa v\u00e0 microphone<\/h3>\n

Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c thi\u1ebft b\u1ecb \u00e2m thanh nh\u01b0 loa v\u00e0 microphone. Trong loa, t\u00edn hi\u1ec7u \u0111i\u1ec7n l\u00e0m cho v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n dao \u0111\u1ed9ng, t\u1ea1o ra s\u00f3ng \u00e2m. Ng\u01b0\u1ee3c l\u1ea1i, trong microphone, s\u00f3ng \u00e2m t\u00e1c \u0111\u1ed9ng l\u00ean m\u00e0ng \u00e1p \u0111i\u1ec7n, t\u1ea1o ra t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u01b0\u01a1ng \u1ee9ng. T\u1eeb nh\u1eefng chi\u1ebfc tai nghe nh\u1ecf g\u1ecdn \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u00e2m thanh l\u1edbn, thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u00e1i t\u1ea1o v\u00e0 thu \u00e2m thanh.<\/p>\n

Thi\u1ebft b\u1ecb y t\u1ebf<\/h3>\n

Trong l\u0129nh v\u1ef1c y t\u1ebf, thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb si\u00eau \u00e2m. S\u00f3ng si\u00eau \u00e2m \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 thu nh\u1eadn b\u1edfi c\u00e1c \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n, cho ph\u00e9p h\u00ecnh \u1ea3nh h\u00f3a c\u00e1c c\u01a1 quan b\u00ean trong c\u01a1 th\u1ec3. \u1ee8ng d\u1ee5ng n\u00e0y v\u00f4 c\u00f9ng quan tr\u1ecdng trong ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111i\u1ec1u tr\u1ecb nhi\u1ec1u b\u1ec7nh l\u00fd.<\/p>\n

Thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng<\/h3>\n

T\u00ednh ch\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi \u00e1p l\u1ef1c c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u0169ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng nh\u01b0 c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, c\u1ea3m bi\u1ebfn gia t\u1ed1c. V\u00ed d\u1ee5, trong \u00f4 t\u00f4, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t l\u1ed1p s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n \u0111\u1ec3 theo d\u00f5i \u00e1p su\u1ea5t l\u1ed1p xe, gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n khi l\u00e1i xe.<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u1ee8ng d\u1ee5ng<\/th>\nM\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
B\u1eadt l\u1eeda<\/td>\nT\u1ea1o tia l\u1eeda \u0111i\u1ec7n<\/td>\n<\/tr>\n
Loa<\/td>\nT\u1ea1o ra s\u00f3ng \u00e2m<\/td>\n<\/tr>\n
Microphone<\/td>\nChuy\u1ec3n \u0111\u1ed5i s\u00f3ng \u00e2m th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb si\u00eau \u00e2m<\/td>\nT\u1ea1o v\u00e0 thu nh\u1eadn s\u00f3ng si\u00eau \u00e2m<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t<\/td>\n\u0110o l\u01b0\u1eddng \u00e1p su\u1ea5t<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn gia t\u1ed1c<\/td>\n\u0110o l\u01b0\u1eddng gia t\u1ed1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00e1c<\/h3>\n

Ngo\u00e0i nh\u1eefng \u1ee9ng d\u1ee5ng k\u1ec3 tr\u00ean, thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n c\u00f2n \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong nhi\u1ec1u thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00e1c nh\u01b0 m\u00e1y in phun, \u0111\u1ed3ng h\u1ed3 th\u1ea1ch anh, guitar \u0111i\u1ec7n. Trong m\u00e1y in phun, c\u00e1c gi\u1ecdt m\u1ef1c \u0111\u01b0\u1ee3c phun ra nh\u1edd v\u00e0o s\u1ef1 rung \u0111\u1ed9ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n.<\/p>\n

T\u00f3m l\u1ea1i, thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 \u0111a n\u0103ng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng quan tr\u1ecdng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. T\u1eeb nh\u1eefng v\u1eadt d\u1ee5ng \u0111\u01a1n gi\u1ea3n nh\u01b0 b\u1eadt l\u1eeda \u0111\u1ebfn nh\u1eefng thi\u1ebft b\u1ecb y t\u1ebf ph\u1ee9c t\u1ea1p, thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n \u0111\u00e3 v\u00e0 \u0111ang \u0111\u00f3ng g\u00f3p t\u00edch c\u1ef1c v\u00e0o s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a khoa h\u1ecdc c\u00f4ng ngh\u1ec7 v\u00e0 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi. S\u1ef1 hi\u1ec7n di\u1ec7n r\u1ed9ng r\u00e3i v\u00e0 \u0111a d\u1ea1ng c\u1ee7a n\u00f3 cho th\u1ea5y ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n to l\u1edbn c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, bi\u1ebfn d\u1ea1ng khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng. Tuy c\u00f3 v\u1ebb nh\u01b0 m\u1ed9t c\u00f4ng ngh\u1ec7 cao c\u1ea5p, th\u1ef1c t\u1ebf l\u00e0 thi\u1ebft<\/p>\n","protected":false},"author":1,"featured_media":5005,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-54712","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\/54712","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=54712"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/54712\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/5005"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=54712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=54712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=54712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}