{"id":45076,"date":"2023-04-22T03:04:58","date_gmt":"2023-04-22T08:04:58","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-detect-ultrasonic-sound\/"},"modified":"2025-01-21T07:15:34","modified_gmt":"2025-01-21T12:15:34","slug":"how-to-detect-ultrasonic-sound","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-detect-ultrasonic-sound\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n \u00e2m thanh si\u00eau \u00e2m: Ph\u01b0\u01a1ng ph\u00e1p v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

\u00c2m thanh si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Vi\u1ec7c ph\u00e1t hi\u1ec7n v\u00e0 \u0111o l\u01b0\u1eddng \u00e2m thanh si\u00eau \u00e2m \u0111\u00f2i h\u1ecfi c\u00e1c thi\u1ebft b\u1ecb v\u00e0 k\u1ef9 thu\u1eadt chuy\u00ean d\u1ee5ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n \u00e2m thanh si\u00eau \u00e2m, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 l\u0129nh v\u1ef1c th\u00fa v\u1ecb n\u00e0y.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m<\/h3>\n

C\u1ea3m bi\u1ebfn si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd \u00e1p \u0111i\u1ec7n, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch ho\u1eb7c hi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o. M\u1ed9t s\u1ed1 c\u1ea3m bi\u1ebfn s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc c\u1ee7a s\u00f3ng \u00e2m th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Khi s\u00f3ng \u00e2m t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p. \u0110i\u1ec7n \u00e1p n\u00e0y \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i v\u00e0 x\u1eed l\u00fd \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a s\u00f3ng \u00e2m nh\u01b0 t\u1ea7n s\u1ed1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9.<\/p>\n

C\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn si\u00eau \u00e2m<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i c\u1ea3m bi\u1ebfn si\u00eau \u00e2m kh\u00e1c nhau, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n\n\n\n\n
Lo\u1ea1i c\u1ea3m bi\u1ebfn<\/th>\nNguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
C\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/td>\nHi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n<\/td>\n\u0110\u1ed9 nh\u1ea1y cao, k\u00edch th\u01b0\u1edbc nh\u1ecf<\/td>\nD\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn \u0111i\u1ec7n dung<\/td>\nThay \u0111\u1ed5i \u0111i\u1ec7n dung<\/td>\nGi\u00e1 th\u00e0nh r\u1ebb, \u0111\u1ed9 b\u1ec1n cao<\/td>\n\u0110\u1ed9 nh\u1ea1y th\u1ea5p h\u01a1n c\u1ea3m bi\u1ebfn \u00e1p \u0111i\u1ec7n<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn t\u1eeb gi\u1ea3o<\/td>\nHi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o<\/td>\nKh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao<\/td>\nK\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Thi\u1ebft b\u1ecb v\u00e0 k\u1ef9 thu\u1eadt \u0111o l\u01b0\u1eddng<\/h3>\n

Vi\u1ec7c \u0111o l\u01b0\u1eddng \u00e2m thanh si\u00eau \u00e2m th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y hi\u1ec7n s\u00f3ng, m\u00e1y ph\u00e2n t\u00edch ph\u1ed5 v\u00e0 m\u00e1y \u0111o m\u1ee9c \u00e2m thanh. M\u00e1y hi\u1ec7n s\u00f3ng hi\u1ec3n th\u1ecb d\u1ea1ng s\u00f3ng c\u1ee7a t\u00edn hi\u1ec7u si\u00eau \u00e2m, cho ph\u00e9p quan s\u00e1t tr\u1ef1c ti\u1ebfp c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a s\u00f3ng. M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1, gi\u00fap x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a c\u00e1c s\u00f3ng si\u00eau \u00e2m kh\u00e1c nhau. M\u00e1y \u0111o m\u1ee9c \u00e2m thanh \u0111o c\u01b0\u1eddng \u0111\u1ed9 \u00e2m thanh v\u00e0 hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 d\u01b0\u1edbi d\u1ea1ng decibel (dB).<\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a vi\u1ec7c ph\u00e1t hi\u1ec7n si\u00eau \u00e2m<\/h3>\n

Ph\u00e1t hi\u1ec7n si\u00eau \u00e2m c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau. Trong y t\u1ebf, n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh, \u0111i\u1ec1u tr\u1ecb ung th\u01b0 v\u00e0 theo d\u00f5i thai nhi. Trong c\u00f4ng nghi\u1ec7p, si\u00eau \u00e2m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra v\u1eadt li\u1ec7u, h\u00e0n v\u00e0 l\u00e0m s\u1ea1ch. Ngo\u00e0i ra, si\u00eau \u00e2m c\u00f2n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb \u0111o kho\u1ea3ng c\u00e1ch, c\u1ea3m bi\u1ebfn \u0111\u1ed7 xe v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c ph\u00e1t hi\u1ec7n si\u00eau \u00e2m<\/h3>\n

M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c ph\u00e1t hi\u1ec7n si\u00eau \u00e2m, bao g\u1ed3m nhi\u1ec5u t\u1eeb m\u00f4i tr\u01b0\u1eddng, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m. Vi\u1ec7c hi\u1ec7u ch\u1ec9nh thi\u1ebft b\u1ecb v\u00e0 l\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c.<\/p>\n

T\u00f3m l\u1ea1i, vi\u1ec7c ph\u00e1t hi\u1ec7n \u00e2m thanh si\u00eau \u00e2m l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c ph\u1ee9c t\u1ea1p nh\u01b0ng \u0111\u1ea7y ti\u1ec1m n\u0103ng. S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 c\u1ea3m bi\u1ebfn v\u00e0 k\u1ef9 thu\u1eadt \u0111o l\u01b0\u1eddng \u0111\u00e3 m\u1edf ra nhi\u1ec1u \u1ee9ng d\u1ee5ng m\u1edbi cho si\u00eau \u00e2m trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau. Hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 c\u00f4ng ngh\u1ec7 ph\u00e1t hi\u1ec7n si\u00eau \u00e2m l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c2m thanh si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Vi\u1ec7c ph\u00e1t hi\u1ec7n v\u00e0 \u0111o l\u01b0\u1eddng \u00e2m thanh si\u00eau \u00e2m \u0111\u00f2i h\u1ecfi c\u00e1c thi\u1ebft b\u1ecb v\u00e0 k\u1ef9 thu\u1eadt chuy\u00ean d\u1ee5ng. B\u00e0i vi\u1ebft<\/p>\n","protected":false},"author":1,"featured_media":26473,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-45076","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\/45076","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=45076"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/45076\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26473"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=45076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=45076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=45076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}