{"id":50620,"date":"2023-04-21T14:39:56","date_gmt":"2023-04-21T19:39:56","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-piezoelectric-pressure-sensor-work\/"},"modified":"2025-01-21T07:12:38","modified_gmt":"2025-01-21T12:12:38","slug":"how-does-piezoelectric-pressure-sensor-work","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-piezoelectric-pressure-sensor-work\/","title":{"rendered":"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"

C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd x\u1ea3y ra \u1edf m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (v\u00ed d\u1ee5: PZT – Lead Zirconate Titanate) v\u00e0 polyme. Khi c\u00e1c v\u1eadt li\u1ec7u n\u00e0y ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc, ch\u00fang t\u1ea1o ra \u0111i\u1ec7n t\u00edch. \u0110i\u1ec7n t\u00edch n\u00e0y t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng, cho ph\u00e9p \u0111o l\u01b0\u1eddng v\u00e0 chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c. C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb y sinh \u0111\u1ebfn c\u00f4ng nghi\u1ec7p, nh\u1edd \u0111\u1ed9 nh\u1ea1y cao, \u0111\u00e1p \u1ee9ng nhanh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n v\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc. Ng\u01b0\u1ee3c l\u1ea1i, khi \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p, v\u1eadt li\u1ec7u n\u00e0y s\u1ebd thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc. C\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t bao g\u1ed3m th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (nh\u01b0 PZT) v\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i polyme. G\u1ed1m \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n do \u0111\u1ed9 nh\u1ea1y cao v\u00e0 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng trong d\u1ea3i nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng.<\/p>\n

C\u1ea5u t\u1ea1o c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n<\/h3>\n

M\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m m\u1ed9t ho\u1eb7c nhi\u1ec1u tinh th\u1ec3 \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c. Khi \u00e1p l\u1ef1c \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng l\u00ean b\u1ec1 m\u1eb7t c\u1ea3m bi\u1ebfn, n\u00f3 truy\u1ec1n \u0111\u1ebfn c\u00e1c tinh th\u1ec3 \u00e1p \u0111i\u1ec7n. S\u1ef1 bi\u1ebfn d\u1ea1ng c\u1ee7a tinh th\u1ec3 t\u1ea1o ra \u0111i\u1ec7n t\u00edch tr\u00ean c\u00e1c \u0111i\u1ec7n c\u1ef1c. \u0110i\u1ec7n t\u00edch n\u00e0y \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p t\u1ef7 l\u1ec7 v\u1edbi \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng.<\/p>\n

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

Khi \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean c\u1ea3m bi\u1ebfn, n\u00f3 l\u00e0m bi\u1ebfn d\u1ea1ng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n. S\u1ef1 bi\u1ebfn d\u1ea1ng n\u00e0y t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n t\u00edch t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u00e1p l\u1ef1c. \u0110i\u1ec7n t\u00edch n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p b\u1eb1ng m\u1ea1ch \u0111i\u1ec7n t\u1eed. T\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111o v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng.<\/p>\n

C\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n<\/h3>\n\n\n\n\n\n\n\n
Lo\u1ea1i c\u1ea3m bi\u1ebfn<\/th>\n\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t t\u0129nh<\/td>\n\u0110o \u00e1p su\u1ea5t kh\u00f4ng \u0111\u1ed5i ho\u1eb7c thay \u0111\u1ed5i ch\u1eadm<\/td>\nTheo d\u00f5i \u00e1p su\u1ea5t trong c\u00e1c h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c, kh\u00ed n\u00e9n<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u1ed9ng<\/td>\n\u0110o \u00e1p su\u1ea5t thay \u0111\u1ed5i nhanh<\/td>\n\u0110o \u00e1p su\u1ea5t trong \u0111\u1ed9ng c\u01a1, s\u00f3ng xung k\u00edch<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t vi sai<\/td>\n\u0110o s\u1ef1 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa hai \u0111i\u1ec3m<\/td>\nTheo d\u00f5i l\u01b0u l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n<\/h3>\n

\u01afu \u0111i\u1ec3m:<\/strong><\/p>\n

    \n
  • \u0110\u1ed9 nh\u1ea1y cao<\/li>\n
  • \u0110\u00e1p \u1ee9ng nhanh<\/li>\n
  • D\u1ea3i \u0111o r\u1ed9ng<\/li>\n
  • K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn<\/li>\n
  • \u0110\u1ed9 b\u1ec1n cao<\/li>\n<\/ul>\n

    Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/p>\n

      \n
    • Nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ed9<\/li>\n
    • C\u1ea7n m\u1ea1ch \u0111i\u1ec7n t\u1eed ph\u1ee9c t\u1ea1p h\u01a1n so v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t kh\u00e1c<\/li>\n
    • Kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t t\u0129nh tuy\u1ec7t \u0111\u1ed1i trong th\u1eddi gian d\u00e0i do hi\u1ec7n t\u01b0\u1ee3ng ph\u00f3ng \u0111i\u1ec7n.<\/li>\n<\/ul>\n

      T\u00f3m l\u1ea1i, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c c\u01a1 h\u1ecdc th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. V\u1edbi \u0111\u1ed9 nh\u1ea1y cao, \u0111\u00e1p \u1ee9ng nhanh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng t\u1ed1t, ch\u00fang l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111o l\u01b0\u1eddng \u00e1p su\u1ea5t trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau. Tuy nhi\u00ean, vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i c\u1ea3m bi\u1ebfn ph\u00f9 h\u1ee3p c\u1ea7n ph\u1ea3i xem x\u00e9t \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 d\u1ea3i \u0111o, t\u1ea7n s\u1ed1 \u0111\u00e1p \u1ee9ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":"

      C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed5i \u00e1p l\u1ef1c th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd x\u1ea3y ra \u1edf m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (v\u00ed d\u1ee5: PZT –<\/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-50620","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\/50620","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=50620"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50620\/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=50620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=50620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=50620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}