{"id":57316,"date":"2023-04-25T14:37:27","date_gmt":"2023-04-25T19:37:27","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-the-frequency-range-of-ultrasonic-waves\/"},"modified":"2025-01-27T06:17:34","modified_gmt":"2025-01-27T11:17:34","slug":"what-is-the-frequency-range-of-ultrasonic-waves","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-frequency-range-of-ultrasonic-waves\/","title":{"rendered":"Frekven\u010dn\u00ed rozsah ultrazvukov\u00fdch vln: detailn\u00ed pohled"},"content":{"rendered":"

Ultrazvukov\u00e9 vlny p\u0159edstavuj\u00ed mechanick\u00e9 vln\u011bn\u00ed s frekvenc\u00ed vy\u0161\u0161\u00ed ne\u017e je horn\u00ed hranice sly\u0161itelnosti lidsk\u00e9ho ucha. P\u0159esn\u00e1 hranice se li\u0161\u00ed v z\u00e1vislosti na v\u011bku a individu\u00e1ln\u00edch faktorech, ale obecn\u011b se za horn\u00ed hranici sly\u0161itelnosti pova\u017euje frekvence 20 kHz. V\u0161e nad touto hranic\u00ed ji\u017e spad\u00e1 do oblasti ultrazvuku. Nicm\u00e9n\u011b, oblast ultrazvuku nen\u00ed nijak striktn\u011b ohrani\u010den\u00e1 a sah\u00e1 a\u017e do mnoha gigahertz\u016f, v z\u00e1vislosti na aplikaci a zdroji.<\/p>\n

Rozsah frekvenc\u00ed ultrazvuku<\/h3>\n

Rozsah frekvenc\u00ed ultrazvuku je velmi \u0161irok\u00fd a rozd\u011bluje se do n\u011bkolika podkategori\u00ed podle frekven\u010dn\u00edch p\u00e1sem. Pro praktick\u00e9 pou\u017eit\u00ed se nej\u010dast\u011bji pou\u017e\u00edvaj\u00ed frekvence od 20 kHz do n\u011bkolika GHz. N\u00edzkofrekven\u010dn\u00ed ultrazvuk (20 kHz \u2013 1 MHz) se vyu\u017e\u00edv\u00e1 nap\u0159\u00edklad v pr\u016fmyslov\u00fdch \u010distic\u00edch za\u0159\u00edzen\u00edch, zat\u00edmco vysokofrekven\u010dn\u00ed ultrazvuk (nad 1 MHz) nach\u00e1z\u00ed uplatn\u011bn\u00ed v l\u00e9ka\u0159sk\u00e9 diagnostice a terapii.<\/p>\n\n\n\n\n\n\n\n\n
Frekven\u010dn\u00ed rozsah (kHz)<\/th>\nAplikace<\/th>\nCharakteristiky<\/th>\n<\/tr>\n<\/thead>\n
20 – 100<\/td>\nPr\u016fmyslov\u00e9 \u010di\u0161t\u011bn\u00ed, sonochemie<\/td>\nNi\u017e\u0161\u00ed intenzita, v\u011bt\u0161\u00ed hloubka pr\u016fniku<\/td>\n<\/tr>\n
100 – 1000<\/td>\nL\u00e9ka\u0159sk\u00e1 diagnostika (ultrazvukov\u00e9 zobrazov\u00e1n\u00ed), nedestruktivn\u00ed testov\u00e1n\u00ed<\/td>\nSt\u0159edn\u00ed intenzita, st\u0159edn\u00ed hloubka pr\u016fniku<\/td>\n<\/tr>\n
1000 – 10000<\/td>\nL\u00e9ka\u0159sk\u00e1 terapie (sonoterapie), mikroskopie<\/td>\nVysok\u00e1 intenzita, men\u0161\u00ed hloubka pr\u016fniku<\/td>\n<\/tr>\n
Nad 10000<\/td>\nSpeci\u00e1ln\u00ed aplikace (nap\u0159. v materi\u00e1lov\u00e9 v\u011bd\u011b)<\/td>\nVelmi vysok\u00e1 intenzita, velmi mal\u00e1 hloubka pr\u016fniku<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Faktory ovliv\u0148uj\u00edc\u00ed frekven\u010dn\u00ed rozsah<\/h3>\n

Frekven\u010dn\u00ed rozsah ultrazvukov\u00fdch vln nen\u00ed pevn\u011b dan\u00fd a m\u016f\u017ee se li\u0161it v z\u00e1vislosti na n\u011bkolika faktorech. Mezi nejd\u016fle\u017eit\u011bj\u0161\u00ed pat\u0159\u00ed typ pou\u017eit\u00e9ho transduktoru, pou\u017eit\u00fd materi\u00e1l a po\u017eadovan\u00e1 aplikace. Nap\u0159\u00edklad piezoelektrick\u00e9 transduktory, kter\u00e9 jsou b\u011b\u017en\u011b pou\u017e\u00edv\u00e1ny pro generov\u00e1n\u00ed ultrazvuku, maj\u00ed omezen\u00fd frekven\u010dn\u00ed rozsah, kter\u00fd je d\u00e1n jejich fyzik\u00e1ln\u00edmi vlastnostmi. Materi\u00e1l, kter\u00fdm ultrazvuk proch\u00e1z\u00ed, ovliv\u0148uje jeho tlumen\u00ed a t\u00edm i dosa\u017eiteln\u00fd rozsah.<\/p>\n

Praktick\u00e9 aplikace a frekven\u010dn\u00ed spektrum<\/h3>\n

R\u016fzn\u00e9 aplikace ultrazvuku vy\u017eaduj\u00ed r\u016fzn\u00e9 frekvence. Nap\u0159\u00edklad pro l\u00e9ka\u0159skou diagnostiku se \u010dasto vyu\u017e\u00edvaj\u00ed frekvence v rozsahu od n\u011bkolika megahertz\u016f, zat\u00edmco pro pr\u016fmyslov\u00e9 \u010di\u0161t\u011bn\u00ed se pou\u017e\u00edvaj\u00ed ni\u017e\u0161\u00ed frekvence. To je zp\u016fsobeno t\u00edm, \u017ee vysok\u00e9 frekvence umo\u017e\u0148uj\u00ed lep\u0161\u00ed rozli\u0161en\u00ed obrazu v l\u00e9ka\u0159sk\u00e9 diagnostice, zat\u00edmco ni\u017e\u0161\u00ed frekvence l\u00e9pe pronikaj\u00ed do materi\u00e1lu p\u0159i \u010di\u0161t\u011bn\u00ed.<\/p>\n

Z\u00e1v\u011br<\/h3>\n

Frekven\u010dn\u00ed rozsah ultrazvukov\u00fdch vln je velmi \u0161irok\u00fd a sah\u00e1 od 20 kHz a\u017e po n\u011bkolik GHz. P\u0159esn\u00fd rozsah z\u00e1vis\u00ed na n\u011bkolika faktorech, v\u010detn\u011b typu transduktoru, materi\u00e1lu a po\u017eadovan\u00e9 aplikace. Rozs\u00e1hl\u00e9 spektrum frekvenc\u00ed umo\u017e\u0148uje vyu\u017eit\u00ed ultrazvuku v \u0161irok\u00e9 \u0161k\u00e1le aplikac\u00ed, od pr\u016fmyslov\u00e9ho \u010di\u0161t\u011bn\u00ed a\u017e po l\u00e9ka\u0159skou diagnostiku a terapii. Pochopen\u00ed frekven\u010dn\u00edho rozsahu je kl\u00ed\u010dov\u00e9 pro efektivn\u00ed vyu\u017eit\u00ed ultrazvukov\u00fdch technologi\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ultrazvukov\u00e9 vlny p\u0159edstavuj\u00ed mechanick\u00e9 vln\u011bn\u00ed s frekvenc\u00ed vy\u0161\u0161\u00ed ne\u017e je horn\u00ed hranice sly\u0161itelnosti lidsk\u00e9ho ucha. P\u0159esn\u00e1 hranice se li\u0161\u00ed v z\u00e1vislosti na v\u011bku a individu\u00e1ln\u00edch faktorech, ale obecn\u011b se za horn\u00ed hranici sly\u0161itelnosti pova\u017euje frekvence 20 kHz. V\u0161e nad touto hranic\u00ed ji\u017e spad\u00e1 do oblasti ultrazvuku. Nicm\u00e9n\u011b, oblast ultrazvuku nen\u00ed nijak striktn\u011b ohrani\u010den\u00e1 a sah\u00e1<\/p>\n","protected":false},"author":1,"featured_media":26461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-57316","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57316","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=57316"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57316\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26461"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=57316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=57316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=57316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}