{"id":46196,"date":"2023-04-22T01:30:09","date_gmt":"2023-04-22T06:30:09","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-use-piezoelectric-sensor\/"},"modified":"2025-01-21T07:23:39","modified_gmt":"2025-01-21T12:23:39","slug":"how-to-use-piezoelectric-sensor","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-use-piezoelectric-sensor\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n hi\u1ec7u qu\u1ea3"},"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 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, t\u1ee9c l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi b\u1ecb bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc. \u1ee8ng d\u1ee5ng c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n r\u1ea5t \u0111a d\u1ea1ng, t\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng nh\u01b0 b\u1eadt l\u1eeda, microphone \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p ph\u1ee9c t\u1ea1p nh\u01b0 \u0111o l\u1ef1c, gia t\u1ed1c v\u00e0 rung \u0111\u1ed9ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n

C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. Khi v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb t\u00e1c \u0111\u1ed9ng b\u1edfi m\u1ed9t l\u1ef1c b\u00ean ngo\u00e0i, c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a n\u00f3 b\u1ecb bi\u1ebfn d\u1ea1ng, 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 t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi l\u1ef1c t\u00e1c \u0111\u1ed9ng. Ng\u01b0\u1ee3c l\u1ea1i, khi \u00e1p d\u1ee5ng m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc.<\/p>\n

L\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/h3>\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. C\u1ea7n xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 d\u1ea3i \u0111o \u00e1p l\u1ef1c, \u0111\u1ed9 nh\u1ea1y, t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng, nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng v\u00e0 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd.<\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\nM\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
D\u1ea3i \u0111o \u00e1p l\u1ef1c<\/td>\nKho\u1ea3ng \u00e1p l\u1ef1c m\u00e0 c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c<\/td>\n<\/tr>\n
\u0110\u1ed9 nh\u1ea1y<\/td>\nT\u1ef7 l\u1ec7 gi\u1eefa \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0 \u00e1p l\u1ef1c \u0111\u1ea7u v\u00e0o<\/td>\n<\/tr>\n
T\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng<\/td>\nT\u1ea7n s\u1ed1 m\u00e0 c\u1ea3m bi\u1ebfn dao \u0111\u1ed9ng m\u1ea1nh nh\u1ea5t<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/td>\nKho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 m\u00e0 c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft n\u1ed1i v\u00e0 m\u1ea1ch \u0111i\u1ec7n<\/h3>\n

C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t m\u1ea1ch khu\u1ebfch \u0111\u1ea1i \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p y\u1ebfu. M\u1ea1ch khu\u1ebfch \u0111\u1ea1i ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p v\u1edbi tr\u1edf kh\u00e1ng c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 d\u1ea3i t\u1ea7n s\u1ed1 mong mu\u1ed1n. Vi\u1ec7c ch\u1ed1ng nhi\u1ec5u c\u0169ng r\u1ea5t quan tr\u1ecdng, \u0111\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec1u nhi\u1ec5u \u0111i\u1ec7n t\u1eeb.<\/p>\n

X\u1eed l\u00fd t\u00edn hi\u1ec7u<\/h3>\n

T\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p t\u1eeb c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed ho\u1eb7c ph\u1ea7n m\u1ec1m. C\u00e1c k\u1ef9 thu\u1eadt x\u1eed l\u00fd t\u00edn hi\u1ec7u th\u00f4ng th\u01b0\u1eddng bao g\u1ed3m l\u1ecdc nhi\u1ec5u, khu\u1ebfch \u0111\u1ea1i, chuy\u1ec3n \u0111\u1ed5i analog sang digital (ADC) v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u.<\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/h3>\n

C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c:<\/p>\n

    \n
  • \u0110o l\u01b0\u1eddng:<\/strong> \u0110o l\u1ef1c, \u00e1p su\u1ea5t, gia t\u1ed1c, rung \u0111\u1ed9ng.<\/li>\n
  • Y t\u1ebf:<\/strong> M\u00e1y si\u00eau \u00e2m, thi\u1ebft b\u1ecb theo d\u00f5i nh\u1ecbp tim.<\/li>\n
  • C\u00f4ng nghi\u1ec7p:<\/strong> Ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y, \u0111i\u1ec1u khi\u1ec3n qu\u00e1 tr\u00ecnh.<\/li>\n
  • \u0110i\u1ec7n t\u1eed ti\u00eau d\u00f9ng:<\/strong> B\u1eadt l\u1eeda, microphone, loa.<\/li>\n<\/ul>\n

    Hi\u1ec7u chu\u1ea9n<\/h3>\n

    Vi\u1ec7c hi\u1ec7u chu\u1ea9n c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o. Hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng m\u1ed9t l\u1ef1c ho\u1eb7c \u00e1p su\u1ea5t \u0111\u00e3 bi\u1ebft v\u00e0o c\u1ea3m bi\u1ebfn v\u00e0 ghi l\u1ea1i \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u00fap thi\u1ebft l\u1eadp m\u1ed1i quan h\u1ec7 gi\u1eefa \u00e1p l\u1ef1c\/l\u1ef1c t\u00e1c \u0111\u1ed9ng v\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra.<\/p>\n

    T\u00f3m l\u1ea1i, c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111a n\u0103ng v\u00e0 h\u1eefu \u00edch trong nhi\u1ec1u \u1ee9ng d\u1ee5ng. Hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u00e1ch l\u1ef1a ch\u1ecdn, k\u1ebft n\u1ed1i v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Vi\u1ec7c hi\u1ec7u chu\u1ea9n \u0111\u1ecbnh k\u1ef3 c\u0169ng r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o.<\/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 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, t\u1ee9c l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi b\u1ecb bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc. \u1ee8ng d\u1ee5ng c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n r\u1ea5t<\/p>\n","protected":false},"author":1,"featured_media":26465,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-46196","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\/46196","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=46196"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/46196\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26465"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=46196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=46196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=46196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}