{"id":44980,"date":"2023-04-22T03:07:05","date_gmt":"2023-04-22T08:07:05","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-ultrasonic-transducer-works\/"},"modified":"2025-01-21T07:12:59","modified_gmt":"2025-01-21T12:12:59","slug":"how-does-ultrasonic-transducer-works","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-ultrasonic-transducer-works\/","title":{"rendered":"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m"},"content":{"rendered":"

Si\u00eau \u00e2m, m\u1ed9t lo\u1ea1i s\u00f3ng \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 cao h\u01a1n ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn h\u00e0ng h\u1ea3i. Trung t\u00e2m c\u1ee7a nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0y ch\u00ednh l\u00e0 \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m, m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng s\u00f3ng si\u00eau \u00e2m v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m, gi\u1ea3i th\u00edch chi ti\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 c\u01a1 ch\u1ebf t\u1ea1o ra v\u00e0 thu nh\u1eadn s\u00f3ng si\u00eau \u00e2m.<\/p>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m<\/h3>\n

\u0110a s\u1ed1 \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. 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, g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n (nh\u01b0 g\u1ed1m PZT – ch\u00ec zirconat titanat), sinh ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a 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 nh\u1edd t\u00ednh ch\u1ea5t \u0111\u1eb7c bi\u1ec7t n\u00e0y, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n tr\u1edf th\u00e0nh th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m.<\/p>\n

C\u1ea5u t\u1ea1o c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m<\/h3>\n

M\u1ed9t \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m nhi\u1ec1u l\u1edbp v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1ec9 m\u1ec9. L\u1edbp v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n n\u1eb1m \u1edf trung t\u00e2m, \u0111\u01b0\u1ee3c k\u1eb9p gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c. M\u1eb7t tr\u01b0\u1edbc c\u1ee7a \u0111\u1ea7u d\u00f2 ti\u1ebfp x\u00fac v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u1ea7n kh\u1ea3o s\u00e1t, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 v\u00e0 kh\u1edbp n\u1ed1i \u00e2m. M\u1eb7t sau \u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp h\u1ea5p th\u1ee5 \u00e2m \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 ph\u1ea3n x\u1ea1 s\u00f3ng si\u00eau \u00e2m b\u00ean trong \u0111\u1ea7u d\u00f2.<\/p>\n\n\n\n\n\n\n\n\n\n
Th\u00e0nh ph\u1ea7n<\/th>\nCh\u1ee9c n\u0103ng<\/th>\n<\/tr>\n<\/thead>\n
V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/td>\nChuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc (s\u00f3ng si\u00eau \u00e2m) v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/td>\n<\/tr>\n
\u0110i\u1ec7n c\u1ef1c<\/td>\nCung c\u1ea5p \u0111i\u1ec7n tr\u01b0\u1eddng cho v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n.<\/td>\n<\/tr>\n
L\u1edbp kh\u1edbp n\u1ed1i \u00e2m<\/td>\nGi\u00fap truy\u1ec1n s\u00f3ng si\u00eau \u00e2m hi\u1ec7u qu\u1ea3 gi\u1eefa \u0111\u1ea7u d\u00f2 v\u00e0 m\u00f4i tr\u01b0\u1eddng.<\/td>\n<\/tr>\n
L\u1edbp b\u1ea3o v\u1ec7<\/td>\nB\u1ea3o v\u1ec7 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n kh\u1ecfi t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng.<\/td>\n<\/tr>\n
L\u1edbp h\u1ea5p th\u1ee5 \u00e2m<\/td>\nGi\u1ea3m thi\u1ec3u s\u1ef1 ph\u1ea3n x\u1ea1 s\u00f3ng si\u00eau \u00e2m b\u00ean trong \u0111\u1ea7u d\u00f2.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qu\u00e1 tr\u00ecnh t\u1ea1o s\u00f3ng si\u00eau \u00e2m<\/h3>\n

Khi m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o hai \u0111i\u1ec7n c\u1ef1c, \u0111i\u1ec7n tr\u01b0\u1eddng t\u1ea1o ra s\u1ebd t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n. Do hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n s\u1ebd gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i theo t\u1ea7n s\u1ed1 c\u1ee7a \u0111i\u1ec7n \u00e1p, t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m lan truy\u1ec1n v\u00e0o m\u00f4i tr\u01b0\u1eddng. T\u1ea7n s\u1ed1 c\u1ee7a s\u00f3ng si\u00eau \u00e2m \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi t\u1ea7n s\u1ed1 c\u1ee7a \u0111i\u1ec7n \u00e1p k\u00edch th\u00edch.<\/p>\n

Qu\u00e1 tr\u00ecnh thu nh\u1eadn s\u00f3ng si\u00eau \u00e2m<\/h3>\n

Khi s\u00f3ng si\u00eau \u00e2m ph\u1ea3n x\u1ea1 t\u1eeb b\u1ec1 m\u1eb7t v\u1eadt th\u1ec3 quay tr\u1edf l\u1ea1i \u0111\u1ea7u d\u00f2, n\u00f3 s\u1ebd t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, g\u00e2y ra s\u1ef1 bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc. S\u1ef1 bi\u1ebfn d\u1ea1ng n\u00e0y s\u1ebd t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p tr\u00ean hai \u0111i\u1ec7n c\u1ef1c. \u0110i\u1ec7n \u00e1p n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i v\u00e0 x\u1eed l\u00fd \u0111\u1ec3 t\u1ea1o ra h\u00ecnh \u1ea3nh ho\u1eb7c d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft.<\/p>\n

C\u00e1c lo\u1ea1i \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m kh\u00e1c nhau, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, \u0111\u1ea7u d\u00f2 tuy\u1ebfn t\u00ednh t\u1ea1o ra ch\u00f9m s\u00f3ng si\u00eau \u00e2m d\u1ea1ng th\u1eb3ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong si\u00eau \u00e2m y t\u1ebf. \u0110\u1ea7u d\u00f2 g\u00f3c qu\u00e9t t\u1ea1o ra ch\u00f9m s\u00f3ng si\u00eau \u00e2m qu\u00e9t theo m\u1ed9t g\u00f3c nh\u1ea5t \u0111\u1ecbnh, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ki\u1ec3m tra v\u1eadt li\u1ec7u.<\/p>\n

Nh\u01b0 v\u1eady, \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 si\u00eau \u00e2m. Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 n\u1ec1n t\u1ea3ng cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i \u0111\u1ea7u d\u00f2, cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng s\u00f3ng si\u00eau \u00e2m v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. S\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 ph\u00e1t tri\u1ec3n v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 si\u00eau \u00e2m hi\u1ec7u qu\u1ea3 h\u01a1n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

Si\u00eau \u00e2m, m\u1ed9t lo\u1ea1i s\u00f3ng \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 cao h\u01a1n ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn h\u00e0ng h\u1ea3i. Trung t\u00e2m c\u1ee7a nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0y ch\u00ednh l\u00e0 \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m, m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n<\/p>\n","protected":false},"author":1,"featured_media":19404,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44980","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\/44980","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=44980"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44980\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/19404"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}