{"id":62966,"date":"2022-09-01T19:21:36","date_gmt":"2022-09-02T00:21:36","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/things-you-need-to-know-about-ultrasonic-transducers\/"},"modified":"2025-01-27T06:15:26","modified_gmt":"2025-01-27T11:15:26","slug":"things-you-need-to-know-about-ultrasonic-transducers","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/things-you-need-to-know-about-ultrasonic-transducers\/","title":{"rendered":"Ultrazvukov\u00e9 sn\u00edma\u010de: Kompletn\u00ed pr\u016fvodce"},"content":{"rendered":"<p>Ultrazvukov\u00e9 sn\u00edma\u010de, neboli transduc\u00e9ry, jsou kl\u00ed\u010dov\u00fdm komponentem v mnoha aplikac\u00edch, od l\u00e9ka\u0159sk\u00e9 diagnostiky p\u0159es pr\u016fmyslovou automatizaci a\u017e po v\u011bdeck\u00fd v\u00fdzkum.  Pochopen\u00ed jejich funk\u010dnosti a charakteristik je nezbytn\u00e9 pro efektivn\u00ed vyu\u017eit\u00ed ultrazvukov\u00e9 technologie.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na d\u016fle\u017eit\u00e9 aspekty, kter\u00e9 je t\u0159eba zn\u00e1t o ultrazvukov\u00fdch sn\u00edma\u010d\u00edch.<\/p>\n<p>Princip fungov\u00e1n\u00ed ultrazvukov\u00fdch sn\u00edma\u010d\u016f<\/p>\n<p>Ultrazvukov\u00e9 sn\u00edma\u010de funguj\u00ed na principu piezoelektrick\u00e9ho jevu.  Piezoelektrick\u00e9 materi\u00e1ly, jako je nap\u0159\u00edklad k\u0159emen nebo speci\u00e1ln\u00ed keramika, m\u011bn\u00ed mechanickou energii (tlak) na energii elektrickou a naopak.  P\u0159i aplikaci elektrick\u00e9ho nap\u011bt\u00ed se piezoelektrick\u00fd element deformuje a generuje ultrazvukov\u00e9 vlny.  Naopak, kdy\u017e ultrazvukov\u00e9 vlny dopadnou na piezoelektrick\u00fd element, generuj\u00ed se v n\u011bm elektrick\u00e9 sign\u00e1ly, kter\u00e9 lze detekovat a zpracovat.  Frekvence generovan\u00fdch vln z\u00e1vis\u00ed na vlastnostech piezoelektrick\u00e9ho materi\u00e1lu a konstrukci sn\u00edma\u010de.<\/p>\n<p>Typy ultrazvukov\u00fdch sn\u00edma\u010d\u016f<\/p>\n<p>Existuje \u0161irok\u00e1 \u0161k\u00e1la ultrazvukov\u00fdch sn\u00edma\u010d\u016f, kter\u00e9 se li\u0161\u00ed v mnoha parametrech.  Hlavn\u00ed d\u011blen\u00ed je na:<\/p>\n<ul>\n<li><strong>Kontaktn\u00ed sn\u00edma\u010de:<\/strong> Tyto sn\u00edma\u010de jsou v p\u0159\u00edm\u00e9m kontaktu s m\u011b\u0159en\u00fdm objektem.  Jde o nejjednodu\u0161\u0161\u00ed typ, ale vy\u017eaduje p\u0159\u00edm\u00fd kontakt a m\u016f\u017ee b\u00fdt n\u00e1chyln\u00fd k po\u0161kozen\u00ed.<\/li>\n<li><strong>Nekontaktn\u00ed sn\u00edma\u010de:<\/strong>  Tyto sn\u00edma\u010de m\u011b\u0159\u00ed vzd\u00e1lenost nebo vlastnosti objektu bez fyzick\u00e9ho kontaktu.  Pou\u017e\u00edvaj\u00ed se nap\u0159\u00edklad pro m\u011b\u0159en\u00ed hladiny kapalin nebo detekci objekt\u016f v bezdotykov\u00e9m re\u017eimu.<\/li>\n<li><strong>Immerzn\u00ed sn\u00edma\u010de:<\/strong>  Tyto sn\u00edma\u010de jsou pono\u0159eny do kapaliny, typicky vody, aby se minimalizovaly ztr\u00e1ty energie p\u0159i \u0161\u00ed\u0159en\u00ed ultrazvukov\u00fdch vln.  Pou\u017e\u00edvaj\u00ed se nap\u0159\u00edklad v l\u00e9ka\u0159sk\u00e9 diagnostice.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ sn\u00edma\u010de<\/th>\n<th>Metoda m\u011b\u0159en\u00ed<\/th>\n<th>Aplikace<\/th>\n<th>V\u00fdhody<\/th>\n<th>Nev\u00fdhody<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kontaktn\u00ed<\/td>\n<td>P\u0159\u00edm\u00fd kontakt<\/td>\n<td>Tlou\u0161\u0165kom\u011bry, defektoskopy<\/td>\n<td>Jednoduch\u00e1 konstrukce, n\u00edzk\u00e1 cena<\/td>\n<td>Po\u0161kozen\u00ed povrchu, omezen\u00e9 aplikace<\/td>\n<\/tr>\n<tr>\n<td>Nekontaktn\u00ed<\/td>\n<td>Bezdotykov\u00fd<\/td>\n<td>M\u011b\u0159en\u00ed vzd\u00e1lenosti, detekce objekt\u016f<\/td>\n<td>Bezdotykov\u00fd provoz, odolnost<\/td>\n<td>Vy\u0161\u0161\u00ed cena, citlivost na ru\u0161en\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Immerzn\u00ed<\/td>\n<td>Pono\u0159en\u00ed do kapaliny<\/td>\n<td>L\u00e9ka\u0159sk\u00e1 diagnostika, pr\u016fmyslov\u00e9 \u010di\u0161t\u011bn\u00ed<\/td>\n<td>Vysok\u00e1 citlivost, p\u0159esnost<\/td>\n<td>Nutnost pou\u017e\u00edt kapalinu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Charakteristiky ultrazvukov\u00fdch sn\u00edma\u010d\u016f<\/p>\n<p>Krom\u011b typu sn\u00edma\u010de je d\u016fle\u017eit\u00e9 br\u00e1t v \u00favahu i jeho dal\u0161\u00ed vlastnosti:<\/p>\n<ul>\n<li><strong>Frekvence:<\/strong>  Frekvence ultrazvuku ovliv\u0148uje hloubku pr\u016fniku a rozli\u0161en\u00ed.  Vy\u0161\u0161\u00ed frekvence umo\u017e\u0148uj\u00ed lep\u0161\u00ed rozli\u0161en\u00ed, ale maj\u00ed men\u0161\u00ed hloubku pr\u016fniku.<\/li>\n<li><strong>Citlivost:<\/strong>  Citlivost ur\u010duje schopnost sn\u00edma\u010de detekovat slab\u00e9 sign\u00e1ly.<\/li>\n<li><strong>Sm\u011brovost:<\/strong>  Sm\u011brovost ud\u00e1v\u00e1, jak \u00fazce je ultrazvukov\u00fd svazek soust\u0159ed\u011bn.<\/li>\n<li><strong>Rozsah m\u011b\u0159en\u00ed:<\/strong>  Tento parametr ur\u010duje maxim\u00e1ln\u00ed vzd\u00e1lenost, na kterou sn\u00edma\u010d dok\u00e1\u017ee m\u011b\u0159it.<\/li>\n<\/ul>\n<p>Aplikace ultrazvukov\u00fdch sn\u00edma\u010d\u016f<\/p>\n<p>Ultrazvukov\u00e9 sn\u00edma\u010de nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech:<\/p>\n<ul>\n<li><strong>L\u00e9ka\u0159sk\u00e1 diagnostika:<\/strong>  Ultrasonografie pro zobrazov\u00e1n\u00ed vnit\u0159n\u00edch org\u00e1n\u016f.<\/li>\n<li><strong>Pr\u016fmyslov\u00e1 automatizace:<\/strong>  M\u011b\u0159en\u00ed hladiny, pr\u016ftoku, tlou\u0161\u0165ky materi\u00e1lu, detekce vad.<\/li>\n<li><strong>Automobilov\u00fd pr\u016fmysl:<\/strong>  Parkovac\u00ed senzory, syst\u00e9my pro asistenci \u0159idi\u010de.<\/li>\n<li><strong>V\u011bdeck\u00fd v\u00fdzkum:<\/strong>  Studium materi\u00e1l\u016f, m\u011b\u0159en\u00ed rychlosti proud\u011bn\u00ed.<\/li>\n<\/ul>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee ultrazvukov\u00e9 sn\u00edma\u010de jsou vysoce univerz\u00e1ln\u00ed a v\u00fdkonn\u00e9 n\u00e1stroje s \u0161irok\u00fdm spektrem aplikac\u00ed.  Pochopen\u00ed jejich principu fungov\u00e1n\u00ed, typ\u016f a charakteristik je kl\u00ed\u010dov\u00e9 pro spr\u00e1vn\u00fd v\u00fdb\u011br a efektivn\u00ed vyu\u017eit\u00ed v dan\u00e9 aplikaci.  Spr\u00e1vn\u00e1 volba z\u00e1vis\u00ed na specifick\u00fdch po\u017eadavc\u00edch dan\u00e9ho \u00fakolu a zahrnuje pe\u010dlivou anal\u00fdzu v\u0161ech relevantn\u00edch parametr\u016f.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00e9 sn\u00edma\u010de, neboli transduc\u00e9ry, jsou kl\u00ed\u010dov\u00fdm komponentem v mnoha aplikac\u00edch, od l\u00e9ka\u0159sk\u00e9 diagnostiky p\u0159es pr\u016fmyslovou automatizaci a\u017e po v\u011bdeck\u00fd v\u00fdzkum. Pochopen\u00ed jejich funk\u010dnosti a charakteristik je nezbytn\u00e9 pro efektivn\u00ed vyu\u017eit\u00ed ultrazvukov\u00e9 technologie. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na d\u016fle\u017eit\u00e9 aspekty, kter\u00e9 je t\u0159eba zn\u00e1t o ultrazvukov\u00fdch sn\u00edma\u010d\u00edch. Princip fungov\u00e1n\u00ed ultrazvukov\u00fdch sn\u00edma\u010d\u016f Ultrazvukov\u00e9 sn\u00edma\u010de funguj\u00ed na principu<\/p>\n","protected":false},"author":1,"featured_media":18821,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-62966","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\/62966","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=62966"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/62966\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/18821"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=62966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=62966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=62966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}