{"id":63061,"date":"2022-08-18T03:28:27","date_gmt":"2022-08-18T08:28:27","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/ultrasonic-transducers-and-ultrasonic-sensors\/"},"modified":"2025-01-27T06:15:45","modified_gmt":"2025-01-27T11:15:45","slug":"ultrasonic-transducers-and-ultrasonic-sensors","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/ultrasonic-transducers-and-ultrasonic-sensors\/","title":{"rendered":"Ultrazvukov\u00e9 sn\u00edma\u010de a p\u0159evodn\u00edky: Technologie a aplikace"},"content":{"rendered":"<p>Ultrazvukov\u00e9 sn\u00edma\u010de a m\u011bni\u010de p\u0159edstavuj\u00ed kl\u00ed\u010dovou technologii s \u0161irok\u00fdm spektrem aplikac\u00ed v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch a v ka\u017edodenn\u00edm \u017eivot\u011b.  Funguj\u00ed na principu generov\u00e1n\u00ed a detekce ultrazvukov\u00fdch vln, kter\u00e9 jsou pro lidsk\u00e9 ucho nesly\u0161iteln\u00e9.  Tyto vlny se \u0161\u00ed\u0159\u00ed prost\u0159ed\u00edm a jejich odraz od p\u0159ek\u00e1\u017eek umo\u017e\u0148uje m\u011b\u0159en\u00ed vzd\u00e1lenosti, detekci objekt\u016f a anal\u00fdzu materi\u00e1l\u016f.  Znalost princip\u016f jejich fungov\u00e1n\u00ed a vlastnost\u00ed je nezbytn\u00e1 pro efektivn\u00ed vyu\u017eit\u00ed t\u00e9to technologie.<\/p>\n<p>Princip fungov\u00e1n\u00ed ultrazvukov\u00fdch m\u011bni\u010d\u016f<\/p>\n<p>Ultrazvukov\u00e9 m\u011bni\u010de, tak\u00e9 zn\u00e1m\u00e9 jako transduc\u00e9ry, p\u0159ev\u00e1d\u011bj\u00ed elektrickou energii na mechanickou energii ve form\u011b ultrazvukov\u00fdch vln a naopak.  Tento proces prob\u00edh\u00e1 pomoc\u00ed piezoelektrick\u00e9ho jevu. Piezoelektrick\u00e9 materi\u00e1ly, jako je nap\u0159\u00edklad k\u0159emen nebo keramika, m\u011bn\u00ed svou velikost v z\u00e1vislosti na aplikovan\u00e9m elektrick\u00e9m poli.  P\u0159i aplikaci st\u0159\u00eddav\u00e9ho nap\u011bt\u00ed na piezoelektrick\u00fd element se generuj\u00ed ultrazvukov\u00e9 vlny, kter\u00e9 se \u0161\u00ed\u0159\u00ed do okoln\u00edho prost\u0159ed\u00ed.  P\u0159i dopadu na p\u0159ek\u00e1\u017eku se vlny odr\u00e1\u017eej\u00ed a m\u011bni\u010d je detekuje.  Doba letu vln se pou\u017eije k v\u00fdpo\u010dtu vzd\u00e1lenosti k p\u0159ek\u00e1\u017ece.  Frekvence ultrazvuku se pohybuje typicky v rozmez\u00ed od 20 kHz do n\u011bkolika MHz.<\/p>\n<p>Typy ultrazvukov\u00fdch sn\u00edma\u010d\u016f<\/p>\n<p>Existuje n\u011bkolik typ\u016f ultrazvukov\u00fdch sn\u00edma\u010d\u016f, kter\u00e9 se li\u0161\u00ed sv\u00fdm designem a aplikac\u00ed.  Mezi nej\u010dast\u011bj\u0161\u00ed pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Kapacitn\u00ed sn\u00edma\u010de:<\/strong> Tyto sn\u00edma\u010de pou\u017e\u00edvaj\u00ed zm\u011bnu kapacity pro detekci zm\u011bn v ultrazvukov\u00e9m poli.<\/li>\n<li><strong>Piezoelektrick\u00e9 sn\u00edma\u010de:<\/strong>  Nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed typ, vyu\u017e\u00edvaj\u00edc\u00ed piezoelektrick\u00fd jev pro generov\u00e1n\u00ed a detekci ultrazvuku.<\/li>\n<li><strong>Optick\u00e9 sn\u00edma\u010de:<\/strong>  Tyto sn\u00edma\u010de detekuj\u00ed ultrazvukov\u00e9 vlny pomoc\u00ed zm\u011bn v indexu lomu optick\u00e9ho m\u00e9dia.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ sn\u00edma\u010de<\/th>\n<th>Princip fungov\u00e1n\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>Piezoelektrick\u00fd<\/td>\n<td>Piezoelektrick\u00fd jev<\/td>\n<td>M\u011b\u0159en\u00ed vzd\u00e1lenosti, detekce objekt\u016f, ultrazvukov\u00e1 diagnostika<\/td>\n<td>Vysok\u00e1 citlivost, robustnost<\/td>\n<td>N\u00e1chylnost k ru\u0161en\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Kapacitn\u00ed<\/td>\n<td>Zm\u011bna kapacity<\/td>\n<td>M\u011b\u0159en\u00ed hladiny, detekce tekutin<\/td>\n<td>Vysok\u00e1 p\u0159esnost<\/td>\n<td>Citlivost na vn\u011bj\u0161\u00ed vlivy<\/td>\n<\/tr>\n<tr>\n<td>Optick\u00fd<\/td>\n<td>Zm\u011bna indexu lomu<\/td>\n<td>M\u011b\u0159en\u00ed rychlosti, detekce vibrac\u00ed<\/td>\n<td>Vysok\u00e1 p\u0159esnost, bezkontaktn\u00ed m\u011b\u0159en\u00ed<\/td>\n<td>Vysok\u00e1 cena<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Aplikace ultrazvukov\u00fdch sn\u00edma\u010d\u016f a m\u011bni\u010d\u016f<\/p>\n<p>Ultrazvukov\u00e9 sn\u00edma\u010de a m\u011bni\u010de nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech:<\/p>\n<ul>\n<li><strong>Automatizace:<\/strong>  Parkovac\u00ed senzory v automobilech, detekce p\u0159ek\u00e1\u017eek v robotice.<\/li>\n<li><strong>Pr\u016fmyslov\u00e1 automatizace:<\/strong>  M\u011b\u0159en\u00ed tlou\u0161\u0165ky materi\u00e1l\u016f, detekce vad, monitorov\u00e1n\u00ed proces\u016f.<\/li>\n<li><strong>L\u00e9ka\u0159stv\u00ed:<\/strong>  Ultrazvukov\u00e9 zobrazov\u00e1n\u00ed, diagnostika.<\/li>\n<li><strong>M\u011b\u0159en\u00ed vzd\u00e1lenosti:<\/strong>  LiDAR syst\u00e9my, d\u00e1lkom\u011bry.<\/li>\n<\/ul>\n<p>Faktory ovliv\u0148uj\u00edc\u00ed v\u00fdkon ultrazvukov\u00fdch sn\u00edma\u010d\u016f<\/p>\n<p>V\u00fdkon ultrazvukov\u00fdch sn\u00edma\u010d\u016f je ovlivn\u011bn n\u011bkolika faktory, v\u010detn\u011b:<\/p>\n<ul>\n<li><strong>Frekvence:<\/strong>  Vysok\u00e9 frekvence poskytuj\u00ed vy\u0161\u0161\u00ed rozli\u0161en\u00ed, ale krat\u0161\u00ed dosah.<\/li>\n<li><strong>\u00dahel vyza\u0159ov\u00e1n\u00ed:<\/strong>  \u00dahel, pod kter\u00fdm se vlny \u0161\u00ed\u0159\u00ed, ovliv\u0148uje oblast detekce.<\/li>\n<li><strong>Materi\u00e1lov\u00e9 vlastnosti:<\/strong>  Vlastnosti prost\u0159ed\u00ed, kter\u00fdm se vlny \u0161\u00ed\u0159\u00ed, ovliv\u0148uj\u00ed jejich \u0161\u00ed\u0159en\u00ed a odraz.<\/li>\n<li><strong>Teplota:<\/strong> Teplotn\u00ed zm\u011bny mohou ovlivnit vlastnosti piezoelektrick\u00fdch materi\u00e1l\u016f a t\u00edm i v\u00fdkon sn\u00edma\u010de.<\/li>\n<\/ul>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee ultrazvukov\u00e9 sn\u00edma\u010de a m\u011bni\u010de p\u0159edstavuj\u00ed d\u016fle\u017eitou technologii s \u0161irok\u00fdm spektrem aplikac\u00ed.  Pochopen\u00ed jejich princip\u016f a vlastnost\u00ed je kl\u00ed\u010dov\u00e9 pro jejich efektivn\u00ed vyu\u017eit\u00ed v r\u016fzn\u00fdch oblastech.  Pokrok v oblasti materi\u00e1l\u016f a elektroniky neust\u00e1le zlep\u0161uje jejich v\u00fdkon a roz\u0161i\u0159uje mo\u017enosti jejich pou\u017eit\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00e9 sn\u00edma\u010de a m\u011bni\u010de p\u0159edstavuj\u00ed kl\u00ed\u010dovou technologii s \u0161irok\u00fdm spektrem aplikac\u00ed v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch a v ka\u017edodenn\u00edm \u017eivot\u011b. Funguj\u00ed na principu generov\u00e1n\u00ed a detekce ultrazvukov\u00fdch vln, kter\u00e9 jsou pro lidsk\u00e9 ucho nesly\u0161iteln\u00e9. Tyto vlny se \u0161\u00ed\u0159\u00ed prost\u0159ed\u00edm a jejich odraz od p\u0159ek\u00e1\u017eek umo\u017e\u0148uje m\u011b\u0159en\u00ed vzd\u00e1lenosti, detekci objekt\u016f a anal\u00fdzu materi\u00e1l\u016f. Znalost princip\u016f jejich fungov\u00e1n\u00ed<\/p>\n","protected":false},"author":1,"featured_media":1500,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-63061","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\/63061","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=63061"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63061\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/1500"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=63061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=63061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=63061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}