{"id":59162,"date":"2023-04-22T00:12:03","date_gmt":"2023-04-22T05:12:03","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-ultrasonic-speaker\/"},"modified":"2025-01-27T06:11:32","modified_gmt":"2025-01-27T11:11:32","slug":"how-to-make-ultrasonic-speaker","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/how-to-make-ultrasonic-speaker\/","title":{"rendered":"Ultrazvukov\u00fd reproduktor: N\u00e1vod krok za krokem"},"content":{"rendered":"<p>Ultrazvukov\u00e9 reproduktory p\u0159edstavuj\u00ed fascinuj\u00edc\u00ed oblast akustiky, kter\u00e1 umo\u017e\u0148uje generov\u00e1n\u00ed zvuku na frekvenc\u00edch nad lidsk\u00fdm sluchov\u00fdm rozsahem.  Tyto reproduktory se li\u0161\u00ed od tradi\u010dn\u00edch reproduktor\u016f a jejich konstrukce vy\u017eaduje specifick\u00e9 znalosti a komponenty. N\u00e1sleduj\u00edc\u00ed text podrobn\u011b popisuje, jak takov\u00fd reproduktor vyrobit.<\/p>\n<h3>V\u00fdb\u011br piezoelektrick\u00e9ho m\u011bni\u010de<\/h3>\n<p>Z\u00e1kladem ka\u017ed\u00e9ho ultrazvukov\u00e9ho reproduktoru je piezoelektrick\u00fd m\u011bni\u010d.  Tento element p\u0159em\u011b\u0148uje elektrickou energii na mechanickou vibraci a naopak.  Pro dosa\u017een\u00ed vysok\u00fdch frekvenc\u00ed je kl\u00ed\u010dov\u00fd v\u00fdb\u011br vhodn\u00e9ho materi\u00e1lu a konstrukce.  Kvalitn\u00ed piezoelektrick\u00e9 m\u011bni\u010de se vyzna\u010duj\u00ed vysokou \u00fa\u010dinnost\u00ed a n\u00edzk\u00fdm zkreslen\u00edm.  P\u0159i v\u00fdb\u011bru je nutn\u00e9 zv\u00e1\u017eit po\u017eadovanou frekvenci, v\u00fdkon a rozm\u011bry.  N\u011bkter\u00e9 m\u011bni\u010de jsou optimalizov\u00e1ny pro specifick\u00e9 aplikace a frekven\u010dn\u00ed rozsahy.  \u0160irok\u00e1 \u0161k\u00e1la piezoelektrick\u00fdch m\u011bni\u010d\u016f je dostupn\u00e1 od r\u016fzn\u00fdch dodavatel\u016f, v\u010detn\u011b specializovan\u00fdch firem, kter\u00e9 se zab\u00fdvaj\u00ed ultrazvukovou technikou.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Parametr<\/th>\n<th>Hodnota (p\u0159\u00edklad)<\/th>\n<th>Pozn\u00e1mka<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Frekvence<\/td>\n<td>40 kHz<\/td>\n<td>Kl\u00ed\u010dov\u00fd parametr pro ur\u010den\u00ed sly\u0161itelnosti<\/td>\n<\/tr>\n<tr>\n<td>V\u00fdkon<\/td>\n<td>5 W<\/td>\n<td>Ovliv\u0148uje hlasitost a dosah zvuku<\/td>\n<\/tr>\n<tr>\n<td>Rozm\u011bry<\/td>\n<td>10 x 10 x 5 mm<\/td>\n<td>Z\u00e1le\u017e\u00ed na po\u017eadovan\u00e9m designu a v\u00fdkonu<\/td>\n<\/tr>\n<tr>\n<td>Impedance<\/td>\n<td>50 \u03a9<\/td>\n<td>D\u016fle\u017eit\u00e9 pro spr\u00e1vn\u00e9 zapojen\u00ed do obvodu<\/td>\n<\/tr>\n<tr>\n<td>Materi\u00e1l<\/td>\n<td>Keramika<\/td>\n<td>Existuj\u00ed i jin\u00e9 materi\u00e1ly, nap\u0159. kompozity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Konstrukce rezonan\u010dn\u00ed komory<\/h3>\n<p>Piezoelektrick\u00fd m\u011bni\u010d s\u00e1m o sob\u011b nen\u00ed dostate\u010dn\u00fd k efektivn\u00edmu generov\u00e1n\u00ed zvuku.  Pot\u0159ebuje rezonan\u010dn\u00ed komoru, kter\u00e1 zes\u00edl\u00ed jeho vibrace a p\u0159enese zvuk do okoln\u00edho prost\u0159ed\u00ed.  Tvar a rozm\u011bry komory jsou kritick\u00e9 pro dosa\u017een\u00ed optim\u00e1ln\u00ed frekven\u010dn\u00ed odezvy.  Komora m\u016f\u017ee b\u00fdt vyrobena z r\u016fzn\u00fdch materi\u00e1l\u016f, jako je nap\u0159\u00edklad kov, plast nebo d\u0159evo, ale je d\u016fle\u017eit\u00e9 vybrat materi\u00e1l s n\u00edzk\u00fdmi ztr\u00e1tami a dobrou akustickou impedanc\u00ed.  P\u0159esn\u00e9 rozm\u011bry komory se po\u010d\u00edtaj\u00ed na z\u00e1klad\u011b po\u017eadovan\u00e9 frekvence a vlastnost\u00ed m\u011bni\u010de.  Simula\u010dn\u00ed software m\u016f\u017ee b\u00fdt u\u017eite\u010dn\u00fd p\u0159i optimalizaci konstrukce.<\/p>\n<h3>Elektronick\u00fd obvod<\/h3>\n<p>Pro nap\u00e1jen\u00ed piezoelektrick\u00e9ho m\u011bni\u010de je pot\u0159eba elektronick\u00fd obvod, kter\u00fd generuje vysokofrekven\u010dn\u00ed sign\u00e1l.  Tento obvod m\u016f\u017ee b\u00fdt pom\u011brn\u011b jednoduch\u00fd, ale je d\u016fle\u017eit\u00e9 db\u00e1t na spr\u00e1vn\u00e9 dimenzov\u00e1n\u00ed komponent\u016f, aby se zabr\u00e1nilo po\u0161kozen\u00ed m\u011bni\u010de.  Obvod obvykle zahrnuje oscil\u00e1tor, zesilova\u010d a ochrann\u00e9 prvky.  Frekvence oscil\u00e1toru by m\u011bla b\u00fdt pe\u010dliv\u011b nastavena na rezonan\u010dn\u00ed frekvenci piezoelektrick\u00e9ho m\u011bni\u010de.<\/p>\n<h3>Sestaven\u00ed a testov\u00e1n\u00ed<\/h3>\n<p>Po vyroben\u00ed v\u0161ech komponent je nutn\u00e9 je sestavit.  Je d\u016fle\u017eit\u00e9 zajistit pevn\u00e9 spojen\u00ed mezi piezoelektrick\u00fdm m\u011bni\u010dem a rezonan\u010dn\u00ed komorou.  Po sestaven\u00ed je nutn\u00e9 reproduktor d\u016fkladn\u011b otestovat.  Zm\u011b\u0159te frekven\u010dn\u00ed odezvu a v\u00fdkon reproduktoru.  Upravte konstrukci a elektronick\u00fd obvod, pokud je to nutn\u00e9, aby se dos\u00e1hlo optim\u00e1ln\u00edch v\u00fdsledk\u016f.  P\u0159i testov\u00e1n\u00ed je d\u016fle\u017eit\u00e9 dodr\u017eovat bezpe\u010dnostn\u00ed opat\u0159en\u00ed, proto\u017ee ultrazvuk m\u016f\u017ee b\u00fdt \u0161kodliv\u00fd p\u0159i vysok\u00fdch intenzit\u00e1ch.<\/p>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee v\u00fdroba ultrazvukov\u00e9ho reproduktoru vy\u017eaduje kombinaci znalost\u00ed z akustiky, elektroniky a mechaniky.  P\u0159esn\u00fd postup z\u00e1vis\u00ed na po\u017eadovan\u00fdch parametrech a dostupn\u00fdch komponentech.  Dob\u0159e navr\u017een\u00fd ultrazvukov\u00fd reproduktor v\u0161ak m\u016f\u017ee poskytnout zaj\u00edmav\u00e9 mo\u017enosti v oblasti akustick\u00fdch aplikac\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00e9 reproduktory p\u0159edstavuj\u00ed fascinuj\u00edc\u00ed oblast akustiky, kter\u00e1 umo\u017e\u0148uje generov\u00e1n\u00ed zvuku na frekvenc\u00edch nad lidsk\u00fdm sluchov\u00fdm rozsahem. Tyto reproduktory se li\u0161\u00ed od tradi\u010dn\u00edch reproduktor\u016f a jejich konstrukce vy\u017eaduje specifick\u00e9 znalosti a komponenty. N\u00e1sleduj\u00edc\u00ed text podrobn\u011b popisuje, jak takov\u00fd reproduktor vyrobit. V\u00fdb\u011br piezoelektrick\u00e9ho m\u011bni\u010de Z\u00e1kladem ka\u017ed\u00e9ho ultrazvukov\u00e9ho reproduktoru je piezoelektrick\u00fd m\u011bni\u010d. Tento element p\u0159em\u011b\u0148uje elektrickou energii na<\/p>\n","protected":false},"author":1,"featured_media":26478,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-59162","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\/59162","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=59162"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/59162\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26478"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=59162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=59162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=59162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}