{"id":57166,"date":"2023-04-25T14:57:21","date_gmt":"2023-04-25T19:57:21","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-an-ultrasonic-generator\/"},"modified":"2025-01-27T06:17:01","modified_gmt":"2025-01-27T11:17:01","slug":"what-is-an-ultrasonic-generator","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-an-ultrasonic-generator\/","title":{"rendered":"Ultrazvukov\u00e9 gener\u00e1tory: Principy a pou\u017eit\u00ed"},"content":{"rendered":"<p>Ultrazvukov\u00e9 gener\u00e1tory jsou za\u0159\u00edzen\u00ed, kter\u00e1 vytv\u00e1\u0159ej\u00ed ultrazvukov\u00e9 vlny, tedy zvukov\u00e9 vlny s frekvenc\u00ed vy\u0161\u0161\u00ed ne\u017e 20 kHz, tedy frekvenc\u00ed, kterou lidsk\u00e9 ucho nedok\u00e1\u017ee vn\u00edmat.  Tyto vlny nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech pr\u016fmyslu, medic\u00edny a v\u011bdy.  Funkce a princip fungov\u00e1n\u00ed t\u011bchto gener\u00e1tor\u016f jsou pom\u011brn\u011b komplexn\u00ed a z\u00e1vis\u00ed na jejich konkr\u00e9tn\u00edm pou\u017eit\u00ed.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na z\u00e1kladn\u00ed principy, typy a aplikace ultrazvukov\u00fdch gener\u00e1tor\u016f.<\/p>\n<p>Princip fungov\u00e1n\u00ed ultrazvukov\u00e9ho gener\u00e1toru<\/p>\n<p>Z\u00e1kladn\u00edm principem ultrazvukov\u00e9ho gener\u00e1toru je p\u0159em\u011bna elektrick\u00e9 energie na mechanick\u00e9 vibrace o ultrazvukov\u00e9 frekvenci.  To se nej\u010dast\u011bji dosahuje pomoc\u00ed piezoelektrick\u00e9ho efektu. Piezoelektrick\u00e9 materi\u00e1ly, jako je nap\u0159\u00edklad k\u0159emen nebo keramika, m\u011bn\u00ed sv\u016fj tvar v z\u00e1vislosti na aplikovan\u00e9m elektrick\u00e9m poli.  Kdy\u017e se na piezoelektrick\u00fd krystal p\u0159ivede st\u0159\u00eddav\u00e9 nap\u011bt\u00ed o ultrazvukov\u00e9 frekvenci, krystal se periodicky rozp\u00edn\u00e1 a smr\u0161\u0165uje, \u010d\u00edm\u017e generuje ultrazvukov\u00e9 vlny. Frekvence t\u011bchto vln je p\u0159\u00edmo \u00fam\u011brn\u00e1 frekvenci aplikovan\u00e9ho nap\u011bt\u00ed.  Intenzita vln z\u00e1vis\u00ed na amplitud\u011b nap\u011bt\u00ed.  Existuj\u00ed i jin\u00e9 metody generov\u00e1n\u00ed ultrazvuku, ale piezoelektrick\u00fd efekt je nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed.<\/p>\n<p>Druhy ultrazvukov\u00fdch gener\u00e1tor\u016f<\/p>\n<p>Ultrazvukov\u00e9 gener\u00e1tory se li\u0161\u00ed v z\u00e1vislosti na frekvenci generovan\u00fdch vln, v\u00fdkonu a zp\u016fsobu pou\u017eit\u00ed.  Zjednodu\u0161en\u011b je m\u016f\u017eeme rozd\u011blit do n\u011bkolika kategori\u00ed:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ gener\u00e1toru<\/th>\n<th>Frekven\u010dn\u00ed rozsah (kHz)<\/th>\n<th>Typick\u00e1 aplikace<\/th>\n<th>V\u00fdkon (W)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>N\u00edzkofrekven\u010dn\u00ed<\/td>\n<td>20 &#8211; 100<\/td>\n<td>\u010ci\u0161t\u011bn\u00ed, ultrazvukov\u00e9 sva\u0159ov\u00e1n\u00ed<\/td>\n<td>10 &#8211; 1000<\/td>\n<\/tr>\n<tr>\n<td>St\u0159edofrekven\u010dn\u00ed<\/td>\n<td>100 &#8211; 1000<\/td>\n<td>L\u00e9ka\u0159sk\u00e9 zobrazov\u00e1n\u00ed, nedestruktivn\u00ed testov\u00e1n\u00ed<\/td>\n<td>1 &#8211; 100<\/td>\n<\/tr>\n<tr>\n<td>Vysokofrekven\u010dn\u00ed<\/td>\n<td>&gt; 1000<\/td>\n<td>Mikroprocesov\u00e1n\u00ed, l\u00e9ka\u0159sk\u00e1 terapie<\/td>\n<td>&lt; 10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Aplikace ultrazvukov\u00fdch gener\u00e1tor\u016f<\/p>\n<p>Ultrazvukov\u00e9 gener\u00e1tory nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech.  Mezi nejv\u00fdznamn\u011bj\u0161\u00ed pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Ultrazvukov\u00e9 \u010di\u0161t\u011bn\u00ed:<\/strong> Odstra\u0148ov\u00e1n\u00ed ne\u010distot z povrchu p\u0159edm\u011bt\u016f pomoc\u00ed kavitac\u00ed.<\/li>\n<li><strong>Ultrazvukov\u00e9 sva\u0159ov\u00e1n\u00ed:<\/strong> Spojov\u00e1n\u00ed materi\u00e1l\u016f pomoc\u00ed ultrazvukov\u00fdch vibrac\u00ed.<\/li>\n<li><strong>Ultrazvukov\u00e9 zpracov\u00e1n\u00ed materi\u00e1l\u016f:<\/strong>  \u0158ez\u00e1n\u00ed, vrt\u00e1n\u00ed, brou\u0161en\u00ed.<\/li>\n<li><strong>L\u00e9ka\u0159sk\u00e9 zobrazov\u00e1n\u00ed:<\/strong>  Ultrasonografie.<\/li>\n<li><strong>L\u00e9ka\u0159sk\u00e1 terapie:<\/strong>  Ultrazvukov\u00e1 l\u00e9\u010dba.<\/li>\n<li><strong>Nedestruktivn\u00ed testov\u00e1n\u00ed:<\/strong>  Detekce vad v materi\u00e1lech.<\/li>\n<\/ul>\n<p>Bezpe\u010dnostn\u00ed opat\u0159en\u00ed<\/p>\n<p>P\u0159i pr\u00e1ci s ultrazvukov\u00fdmi gener\u00e1tory je d\u016fle\u017eit\u00e9 dodr\u017eovat bezpe\u010dnostn\u00ed opat\u0159en\u00ed.  Intenzivn\u00ed ultrazvuk m\u016f\u017ee po\u0161kodit sluch, proto je nutn\u00e9 pou\u017e\u00edvat ochrann\u00e9 pom\u016fcky.  D\u00e1le je nutn\u00e9 db\u00e1t na spr\u00e1vn\u00e9 uzemn\u011bn\u00ed za\u0159\u00edzen\u00ed a dodr\u017eovat pokyny v\u00fdrobce.  V n\u011bkter\u00fdch p\u0159\u00edpadech, zejm\u00e9na p\u0159i pou\u017eit\u00ed vysokov\u00fdkonn\u00fdch gener\u00e1tor\u016f, je nutn\u00e9 pracovat v chr\u00e1n\u011bn\u00e9m prost\u0159ed\u00ed.<\/p>\n<p>Ultrazvukov\u00e9 gener\u00e1tory p\u0159edstavuj\u00ed d\u016fle\u017eitou technologii s \u0161irok\u00fdm spektrem aplikac\u00ed.  Pochopen\u00ed jejich principu fungov\u00e1n\u00ed a bezpe\u010dn\u00e9ho pou\u017e\u00edv\u00e1n\u00ed je kl\u00ed\u010dov\u00e9 pro jejich efektivn\u00ed a bezpe\u010dn\u00e9 nasazen\u00ed v r\u016fzn\u00fdch oblastech.  Pokrok v oblasti piezoelektrick\u00fdch materi\u00e1l\u016f a elektroniky neust\u00e1le roz\u0161i\u0159uje mo\u017enosti a aplikace t\u011bchto v\u0161estrann\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00e9 gener\u00e1tory jsou za\u0159\u00edzen\u00ed, kter\u00e1 vytv\u00e1\u0159ej\u00ed ultrazvukov\u00e9 vlny, tedy zvukov\u00e9 vlny s frekvenc\u00ed vy\u0161\u0161\u00ed ne\u017e 20 kHz, tedy frekvenc\u00ed, kterou lidsk\u00e9 ucho nedok\u00e1\u017ee vn\u00edmat. Tyto vlny nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech pr\u016fmyslu, medic\u00edny a v\u011bdy. Funkce a princip fungov\u00e1n\u00ed t\u011bchto gener\u00e1tor\u016f jsou pom\u011brn\u011b komplexn\u00ed a z\u00e1vis\u00ed na jejich konkr\u00e9tn\u00edm pou\u017eit\u00ed. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed<\/p>\n","protected":false},"author":1,"featured_media":24652,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-57166","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\/57166","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=57166"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57166\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/24652"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=57166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=57166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=57166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}