{"id":57946,"date":"2023-04-22T02:02:28","date_gmt":"2023-04-22T07:02:28","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/ultrasonic-transducer-can-act-as\/"},"modified":"2025-01-27T06:15:44","modified_gmt":"2025-01-27T11:15:44","slug":"ultrasonic-transducer-can-act-as","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/ultrasonic-transducer-can-act-as\/","title":{"rendered":"Ultrazvukov\u00fd sn\u00edma\u010d: v\u00edce ne\u017e jen p\u0159evodn\u00edk"},"content":{"rendered":"<p>Ultrazvukov\u00fd sn\u00edma\u010d, d\u00edky sv\u00e9 schopnosti generovat a p\u0159ij\u00edmat ultrazvukov\u00e9 vlny, nach\u00e1z\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech. Jeho funk\u010dnost p\u0159esahuje pouh\u00e9 m\u011b\u0159en\u00ed vzd\u00e1lenosti a jeho role se st\u00e1v\u00e1 st\u00e1le komplexn\u011bj\u0161\u00ed s rozvojem technologi\u00ed.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na r\u016fzn\u00e9 funkce, kter\u00e9 ultrazvukov\u00fd sn\u00edma\u010d m\u016f\u017ee plnit.<\/p>\n<p>M\u011b\u0159en\u00ed vzd\u00e1lenosti a \u00farovn\u011b<\/p>\n<p>Z\u00e1kladn\u00ed a nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed funkc\u00ed ultrazvukov\u00e9ho sn\u00edma\u010de je m\u011b\u0159en\u00ed vzd\u00e1lenosti.  Princip spo\u010d\u00edv\u00e1 v vysl\u00e1n\u00ed ultrazvukov\u00e9ho impulzu a m\u011b\u0159en\u00ed doby, za kterou se odraz\u00ed od p\u0159ek\u00e1\u017eky a vr\u00e1t\u00ed zp\u011bt ke sn\u00edma\u010di.  Tato metoda se vyu\u017e\u00edv\u00e1 v \u0161irok\u00e9m spektru aplikac\u00ed, od parkovac\u00edch senzor\u016f v automobilech a\u017e po automatizovan\u00e9 syst\u00e9my v pr\u016fmyslu.  Doba letu ultrazvukov\u00e9 vlny je p\u0159\u00edmo \u00fam\u011brn\u00e1 vzd\u00e1lenosti k objektu.  P\u0159esnost m\u011b\u0159en\u00ed z\u00e1vis\u00ed na \u0159ad\u011b faktor\u016f, v\u010detn\u011b frekvence ultrazvuku, vlastnost\u00ed prost\u0159ed\u00ed a charakteru odrazn\u00e9 plochy.  M\u011b\u0159en\u00ed \u00farovn\u011b kapalin v n\u00e1dr\u017e\u00edch je dal\u0161\u00ed \u010dastou aplikac\u00ed, kde se ultrazvukov\u00fd sn\u00edma\u010d pou\u017e\u00edv\u00e1 pro bezkontaktn\u00ed detekci hladiny.<\/p>\n<p>Detekce a charakterizace materi\u00e1l\u016f<\/p>\n<p>Ultrazvukov\u00e9 sn\u00edma\u010de se \u00fasp\u011b\u0161n\u011b pou\u017e\u00edvaj\u00ed k detekci a charakterizaci materi\u00e1l\u016f.  Anal\u00fdzou odra\u017een\u00fdch ultrazvukov\u00fdch vln je mo\u017en\u00e9 zjistit vnit\u0159n\u00ed vady materi\u00e1l\u016f, jako jsou praskliny, p\u00f3ry nebo inkluze.  Tato metoda je nen\u00e1padn\u00e1 a umo\u017e\u0148uje detekoci vad i v hlub\u0161\u00edch vrstv\u00e1ch materi\u00e1lu.  V pr\u016fmyslu se vyu\u017e\u00edv\u00e1 ke kontrole kvality materi\u00e1l\u016f, a to jak v metalurgii, tak i v plastik\u00e1\u0159sk\u00e9m pr\u016fmyslu.  R\u016fzn\u00e9 materi\u00e1ly maj\u00ed r\u016fznou akustickou impedanci, kter\u00e1 ovliv\u0148uje odraz a pr\u016fchod ultrazvukov\u00fdch vln.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Materi\u00e1l<\/th>\n<th>Akustick\u00e1 impedance (MRayls)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ocel<\/td>\n<td>45<\/td>\n<\/tr>\n<tr>\n<td>Hlin\u00edk<\/td>\n<td>17<\/td>\n<\/tr>\n<tr>\n<td>Plast (PP)<\/td>\n<td>3,5<\/td>\n<\/tr>\n<tr>\n<td>Voda<\/td>\n<td>1,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Sn\u00edm\u00e1n\u00ed pohybu a vibrac\u00ed<\/p>\n<p>Ultrazvukov\u00e9 sn\u00edma\u010de mohou tak\u00e9 slou\u017eit k detekci a m\u011b\u0159en\u00ed pohybu a vibrac\u00ed.  Zm\u011bny frekvence a amplitudy odra\u017een\u00fdch ultrazvukov\u00fdch vln poskytuj\u00ed informace o rychlosti a sm\u011bru pohybu objektu.  Tato schopnost se vyu\u017e\u00edv\u00e1 v r\u016fzn\u00fdch oblastech, nap\u0159\u00edklad v monitoringu strojn\u00edch za\u0159\u00edzen\u00ed, detekci \u00fanik\u016f plynu nebo v medic\u00edn\u011b pro neinvazivn\u00ed diagnostiku.  Citlivost na vibrace umo\u017e\u0148uje detekovat i velmi mal\u00e9 pohyby.<\/p>\n<p>L\u00e9ka\u0159sk\u00e9 aplikace<\/p>\n<p>V medic\u00edn\u011b se ultrazvukov\u00e9 sn\u00edma\u010de pou\u017e\u00edvaj\u00ed k zobrazov\u00e1n\u00ed vnit\u0159n\u00edch org\u00e1n\u016f a tk\u00e1n\u00ed.  Ultrazvukov\u00e9 sn\u00edm\u00e1n\u00ed je neinvazivn\u00ed metoda, kter\u00e1 umo\u017e\u0148uje z\u00edskat detailn\u00ed obraz struktury tk\u00e1n\u00ed v re\u00e1ln\u00e9m \u010dase.  R\u016fzn\u00e9 frekvence ultrazvukov\u00fdch vln se vyu\u017e\u00edvaj\u00ed pro zobrazov\u00e1n\u00ed r\u016fzn\u00fdch org\u00e1n\u016f a tk\u00e1n\u00ed.  Tato technologie je nepostradateln\u00e1 v diagnostice mnoha onemocn\u011bn\u00ed.<\/p>\n<p>Z\u00e1v\u011br<\/p>\n<p>Ultrazvukov\u00fd sn\u00edma\u010d je v\u0161estrann\u00e9 za\u0159\u00edzen\u00ed s \u0161irok\u00fdm spektrem aplikac\u00ed.  Jeho schopnost generovat a p\u0159ij\u00edmat ultrazvukov\u00e9 vlny umo\u017e\u0148uje m\u011b\u0159en\u00ed vzd\u00e1lenosti, detekci materi\u00e1l\u016f, sn\u00edm\u00e1n\u00ed pohybu a mnoho dal\u0161\u00edch funkc\u00ed.  Jeho v\u00fdznam v pr\u016fmyslu, medic\u00edn\u011b a dal\u0161\u00edch oblastech st\u00e1le roste s rozvojem technologi\u00ed a jeho st\u00e1le se zvy\u0161uj\u00edc\u00ed p\u0159esnost\u00ed a spolehlivost\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00fd sn\u00edma\u010d, d\u00edky sv\u00e9 schopnosti generovat a p\u0159ij\u00edmat ultrazvukov\u00e9 vlny, nach\u00e1z\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech. Jeho funk\u010dnost p\u0159esahuje pouh\u00e9 m\u011b\u0159en\u00ed vzd\u00e1lenosti a jeho role se st\u00e1v\u00e1 st\u00e1le komplexn\u011bj\u0161\u00ed s rozvojem technologi\u00ed. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na r\u016fzn\u00e9 funkce, kter\u00e9 ultrazvukov\u00fd sn\u00edma\u010d m\u016f\u017ee plnit. M\u011b\u0159en\u00ed vzd\u00e1lenosti a \u00farovn\u011b Z\u00e1kladn\u00ed a nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed funkc\u00ed ultrazvukov\u00e9ho sn\u00edma\u010de je<\/p>\n","protected":false},"author":1,"featured_media":19415,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-57946","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\/57946","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=57946"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57946\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/19415"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=57946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=57946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=57946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}