{"id":50884,"date":"2023-04-21T14:24:08","date_gmt":"2023-04-21T19:24:08","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-a-piezo-work\/"},"modified":"2025-01-21T07:11:57","modified_gmt":"2025-01-21T12:11:57","slug":"how-does-a-piezo-work","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-a-piezo-work\/","title":{"rendered":"Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n: Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng"},"content":{"rendered":"

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, l\u00e0 n\u1ec1n t\u1ea3ng cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb piezo. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, hi\u1ec7u \u1ee9ng n\u00e0y m\u00f4 t\u1ea3 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \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. Ch\u00ednh kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng gi\u1eefa d\u1ea1ng c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n n\u00e0y \u0111\u00e3 l\u00e0m cho piezo tr\u1edf n\u00ean v\u00f4 c\u00f9ng h\u1eefu \u00edch trong nhi\u1ec1u \u1ee9ng d\u1ee5ng.<\/p>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp v\u00e0 ngh\u1ecbch \u0111\u1ea3o<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: tr\u1ef1c ti\u1ebfp v\u00e0 ngh\u1ecbch \u0111\u1ea3o. Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp x\u1ea3y ra khi v\u1eadt li\u1ec7u piezo t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi b\u1ecb n\u00e9n ho\u1eb7c k\u00e9o gi\u00e3n. Ng\u01b0\u1ee3c l\u1ea1i, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u1ea3o x\u1ea3y ra khi v\u1eadt li\u1ec7u piezo thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng.<\/p>\n

C\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 s\u1ef1 ph\u00e2n c\u1ef1c<\/h3>\n

Ch\u00eca kh\u00f3a cho hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n n\u1eb1m \u1edf c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a v\u1eadt li\u1ec7u. C\u00e1c v\u1eadt li\u1ec7u piezo, nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (PZT), v\u00e0 polyvinylidene fluoride (PVDF), \u0111\u1ec1u c\u00f3 c\u1ea5u tr\u00fac tinh th\u1ec3 kh\u00f4ng \u0111\u1ed1i x\u1ee9ng. S\u1ef1 s\u1eafp x\u1ebfp n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n c\u1ef1c \u0111i\u1ec7n b\u00ean trong v\u1eadt li\u1ec7u. Khi v\u1eadt li\u1ec7u b\u1ecb n\u00e9n ho\u1eb7c k\u00e9o gi\u00e3n, s\u1ef1 ph\u00e2n c\u1ef1c n\u00e0y thay \u0111\u1ed5i, t\u1ea1o ra \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u.<\/p>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn<\/h3>\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\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
Th\u1ea1ch anh<\/td>\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh cao, t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng ch\u00ednh x\u00e1c<\/td>\nHi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n y\u1ebfu<\/td>\n\u0110\u1ed3ng h\u1ed3, b\u1ed9 dao \u0111\u1ed9ng<\/td>\n<\/tr>\n
G\u1ed1m \u00e1p \u0111i\u1ec7n (PZT)<\/td>\nHi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n m\u1ea1nh, gi\u00e1 th\u00e0nh th\u1ea5p<\/td>\n\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00e9m h\u01a1n th\u1ea1ch anh<\/td>\nLoa, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t<\/td>\n<\/tr>\n
PVDF<\/td>\nLinh ho\u1ea1t, d\u1ebbo dai<\/td>\nHi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n y\u1ebfu h\u01a1n PZT<\/td>\nC\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng, m\u00e0ng loa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8ng d\u1ee5ng c\u1ee7a Piezo<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed h\u00e0ng ng\u00e0y \u0111\u1ebfn c\u00e1c c\u00f4ng ngh\u1ec7 y t\u1ebf ti\u00ean ti\u1ebfn. M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n

    \n
  • C\u1ea3m bi\u1ebfn:<\/strong> Piezo \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c c\u1ea3m bi\u1ebfn \u0111o \u00e1p su\u1ea5t, gia t\u1ed1c, v\u00e0 rung \u0111\u1ed9ng.<\/li>\n
  • B\u1ed9 truy\u1ec1n \u0111\u1ed9ng:<\/strong> Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u1ea3o cho ph\u00e9p piezo ho\u1ea1t \u0111\u1ed9ng nh\u01b0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng, t\u1ea1o ra chuy\u1ec3n \u0111\u1ed9ng ch\u00ednh x\u00e1c trong c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 \u0111\u1ea7u in phun v\u00e0 k\u00ednh hi\u1ec3n vi l\u1ef1c nguy\u00ean t\u1eed.<\/li>\n
  • Thi\u1ebft b\u1ecb t\u1ea1o s\u00f3ng si\u00eau \u00e2m:<\/strong> Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, v\u1eadt li\u1ec7u piezo \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m, v\u00ed d\u1ee5 nh\u01b0 trong c\u00e1c m\u00e1y si\u00eau \u00e2m y t\u1ebf. N\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u trong ng\u1eef c\u1ea3nh si\u00eau \u00e2m, c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc Beijing Ultrasonic.<\/li>\n
  • \u0110\u00e1nh l\u1eeda:<\/strong> Piezo \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u1eadt l\u1eeda \u0111\u1ec3 t\u1ea1o ra tia l\u1eeda \u0111i\u1ec7n.<\/li>\n
  • B\u1ed9 t\u1ea1o n\u0103ng l\u01b0\u1ee3ng:<\/strong> C\u00e1c v\u1eadt li\u1ec7u piezo c\u00f3 th\u1ec3 thu n\u0103ng l\u01b0\u1ee3ng t\u1eeb rung \u0111\u1ed9ng c\u01a1 h\u1ecdc v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh \u0111i\u1ec7n n\u0103ng.<\/li>\n<\/ul>\n

    T\u00f3m l\u1ea1i, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111\u1ed9c \u0111\u00e1o cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng gi\u1eefa d\u1ea1ng c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n. S\u1ef1 \u0111a d\u1ea1ng v\u1ec1 v\u1eadt li\u1ec7u piezo v\u00e0 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a ch\u00fang \u0111\u00e3 v\u00e0 \u0111ang \u0111\u00f3ng g\u00f3p \u0111\u00e1ng k\u1ec3 v\u00e0o s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a nhi\u1ec1u l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7. T\u1eeb nh\u1eefng \u1ee9ng d\u1ee5ng quen thu\u1ed9c h\u00e0ng ng\u00e0y \u0111\u1ebfn nh\u1eefng c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn, piezo ti\u1ebfp t\u1ee5c ch\u1ee9ng minh t\u1ea7m quan tr\u1ecdng c\u1ee7a m\u00ecnh trong th\u1ebf gi\u1edbi hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, l\u00e0 n\u1ec1n t\u1ea3ng cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb piezo. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, hi\u1ec7u \u1ee9ng n\u00e0y m\u00f4 t\u1ea3 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, bi\u1ebfn<\/p>\n","protected":false},"author":1,"featured_media":23761,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-50884","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\/50884","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=50884"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23761"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=50884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=50884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=50884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}