{"id":60013,"date":"2023-04-21T22:52:21","date_gmt":"2023-04-22T03:52:21","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-a-piezoelectric-transducer\/"},"modified":"2025-01-27T06:09:17","modified_gmt":"2025-01-27T11:09:17","slug":"how-to-make-a-piezoelectric-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/how-to-make-a-piezoelectric-transducer\/","title":{"rendered":"V\u00fdroba piezoelektrick\u00e9ho sn\u00edma\u010de: Podrobn\u00fd n\u00e1vod"},"content":{"rendered":"<p>Piezoelektrick\u00e9 transducery jsou fascinuj\u00edc\u00ed za\u0159\u00edzen\u00ed, kter\u00e1 dok\u00e1\u017e\u00ed p\u0159ev\u00e1d\u011bt mechanickou energii na energii elektrickou a naopak.  Tento proces je zalo\u017een na piezoelektrick\u00e9m efektu, objeven\u00e9m v roce 1880 bratry Curie.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na proces v\u00fdroby t\u011bchto transduktor\u016f, od v\u00fdb\u011bru materi\u00e1l\u016f a\u017e po fin\u00e1ln\u00ed sestaven\u00ed.<\/p>\n<h3>V\u00fdb\u011br materi\u00e1lu<\/h3>\n<p>Nejd\u016fle\u017eit\u011bj\u0161\u00edm aspektem p\u0159i v\u00fdrob\u011b piezoelektrick\u00e9ho transduktoru je volba spr\u00e1vn\u00e9ho piezoelektrick\u00e9ho materi\u00e1lu.  Existuje \u0161irok\u00e1 \u0161k\u00e1la materi\u00e1l\u016f s r\u016fzn\u00fdmi vlastnostmi, jako je piezoelektrick\u00fd koeficient, mechanick\u00e1 pevnost a dielektrick\u00e1 konstanta.  Nej\u010dast\u011bji pou\u017e\u00edvan\u00fdmi materi\u00e1ly jsou keramick\u00e9 materi\u00e1ly na b\u00e1zi olovnat\u00e9ho zirkonatanu titanatu (PZT), kter\u00e9 se vyzna\u010duj\u00ed vysok\u00fdm piezoelektrick\u00fdm koeficientem a dobrou mechanickou stabilitou.  Jin\u00e9 materi\u00e1ly, jako je k\u0159emen nebo n\u011bkter\u00e9 polymery, se pou\u017e\u00edvaj\u00ed v specifick\u00fdch aplikac\u00edch, kde jsou po\u017eadov\u00e1ny jin\u00e9 vlastnosti.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Materi\u00e1l<\/th>\n<th>Piezoelektrick\u00fd koeficient (pC\/N)<\/th>\n<th>Mechanick\u00e1 pevnost (MPa)<\/th>\n<th>Dielektrick\u00e1 konstanta<\/th>\n<th>Aplikace<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PZT<\/td>\n<td>200 &#8211; 700<\/td>\n<td>50 &#8211; 100<\/td>\n<td>1000 &#8211; 3000<\/td>\n<td>Ultrazvukov\u00e9 senzory, aktu\u00e1tory<\/td>\n<\/tr>\n<tr>\n<td>K\u0159emen<\/td>\n<td>2 &#8211; 3<\/td>\n<td>200 &#8211; 300<\/td>\n<td>4 &#8211; 5<\/td>\n<td>Vysokofrekven\u010dn\u00ed filtry, oscil\u00e1tory<\/td>\n<\/tr>\n<tr>\n<td>PVDF (polymer)<\/td>\n<td>10 &#8211; 30<\/td>\n<td>30 &#8211; 50<\/td>\n<td>7 &#8211; 12<\/td>\n<td>Hydrofony, sn\u00edma\u010de tlaku<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>P\u0159\u00edprava materi\u00e1lu<\/h3>\n<p>Po v\u00fdb\u011bru materi\u00e1lu je nutn\u00e9 jej p\u0159ipravit pro dal\u0161\u00ed zpracov\u00e1n\u00ed.  Keramick\u00e9 materi\u00e1ly se nej\u010dast\u011bji lisuj\u00ed do po\u017eadovan\u00e9ho tvaru a n\u00e1sledn\u011b se vypa\u0159uj\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch, aby se dos\u00e1hlo po\u017eadovan\u00e9 krystalick\u00e9 struktury.  Tento proces vy\u017eaduje precizn\u00ed kontrolu teploty a tlaku, aby se zabr\u00e1nilo vzniku defekt\u016f v materi\u00e1lu.  Polymern\u00ed materi\u00e1ly se zpracov\u00e1vaj\u00ed odli\u0161n\u011b, \u010dasto se pou\u017e\u00edvaj\u00ed metody jako lit\u00ed nebo vst\u0159ikov\u00e1n\u00ed.<\/p>\n<h3>Elektroda a zapojen\u00ed<\/h3>\n<p>Na p\u0159ipraven\u00fd piezoelektrick\u00fd materi\u00e1l se nanesou elektrody, obvykle z kov\u016f jako st\u0159\u00edbro, zlato nebo platina.  Tyto elektrody slou\u017e\u00ed k p\u0159ipojen\u00ed transduktoru k obvodu.  Elektrody se nan\u00e1\u0161\u00ed r\u016fzn\u00fdmi metodami, jako je napa\u0159ov\u00e1n\u00ed, st\u0159\u00edk\u00e1n\u00ed nebo ti\u0161t\u011bn\u00ed.  Spr\u00e1vn\u00e9 napojen\u00ed elektrod je kl\u00ed\u010dov\u00e9 pro funkci transduktoru.  Nespr\u00e1vn\u00e9 p\u0159ipojen\u00ed m\u016f\u017ee v\u00e9st ke sn\u00ed\u017een\u00ed \u00fa\u010dinnosti nebo dokonce k po\u0161kozen\u00ed transduktoru.<\/p>\n<h3>Sestaven\u00ed a balen\u00ed<\/h3>\n<p>Fin\u00e1ln\u00ed krok zahrnuje sestaven\u00ed cel\u00e9ho transduktoru.  To zahrnuje upevn\u011bn\u00ed piezoelektrick\u00e9ho prvku s elektrodami do ochrann\u00e9ho pouzdra, kter\u00e9 ho chr\u00e1n\u00ed p\u0159ed mechanick\u00fdm po\u0161kozen\u00edm a vn\u011bj\u0161\u00edmi vlivy.  Pouzdro m\u016f\u017ee b\u00fdt vyrobeno z r\u016fzn\u00fdch materi\u00e1l\u016f, v z\u00e1vislosti na po\u017eadovan\u00e9 odolnosti a aplikaci transduktoru.  V n\u011bkter\u00fdch p\u0159\u00edpadech se pou\u017eije i speci\u00e1ln\u00ed tlum\u00edc\u00ed materi\u00e1l pro redukci ne\u017e\u00e1douc\u00edch vibrac\u00ed.<\/p>\n<h3>Testov\u00e1n\u00ed a kalibrace<\/h3>\n<p>Po sestaven\u00ed je nutn\u00e9 transduktor d\u016fkladn\u011b otestovat a kalibrovat.  To zahrnuje m\u011b\u0159en\u00ed jeho frekven\u010dn\u00ed odezvy, citlivosti a dal\u0161\u00edch parametr\u016f.  Tyto parametry se porovn\u00e1vaj\u00ed s po\u017eadovan\u00fdmi hodnotami a p\u0159\u00edpadn\u011b se provedou \u00fapravy.  Pou\u017eit\u00ed precizn\u00edch m\u011b\u0159ic\u00edch p\u0159\u00edstroj\u016f je nezbytn\u00e9 pro zaji\u0161t\u011bn\u00ed kvality a spolehlivosti transduktoru.<\/p>\n<p>Piezoelektrick\u00e9 transducery nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech, od l\u00e9ka\u0159stv\u00ed a\u017e po pr\u016fmysl.  Pochopen\u00ed procesu jejich v\u00fdroby je nezbytn\u00e9 pro jejich efektivn\u00ed vyu\u017eit\u00ed.  Precizn\u00ed zpracov\u00e1n\u00ed materi\u00e1lu a pe\u010dliv\u00e9 sestaven\u00ed jsou kl\u00ed\u010dov\u00e9 pro dosa\u017een\u00ed optim\u00e1ln\u00edch vlastnost\u00ed a dlouh\u00e9 \u017eivotnosti t\u011bchto d\u016fle\u017eit\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelektrick\u00e9 transducery jsou fascinuj\u00edc\u00ed za\u0159\u00edzen\u00ed, kter\u00e1 dok\u00e1\u017e\u00ed p\u0159ev\u00e1d\u011bt mechanickou energii na energii elektrickou a naopak. Tento proces je zalo\u017een na piezoelektrick\u00e9m efektu, objeven\u00e9m v roce 1880 bratry Curie. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na proces v\u00fdroby t\u011bchto transduktor\u016f, od v\u00fdb\u011bru materi\u00e1l\u016f a\u017e po fin\u00e1ln\u00ed sestaven\u00ed. V\u00fdb\u011br materi\u00e1lu Nejd\u016fle\u017eit\u011bj\u0161\u00edm aspektem p\u0159i v\u00fdrob\u011b piezoelektrick\u00e9ho transduktoru je volba spr\u00e1vn\u00e9ho<\/p>\n","protected":false},"author":1,"featured_media":19417,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-60013","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\/60013","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=60013"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/60013\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/19417"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=60013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=60013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=60013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}