{"id":63346,"date":"2022-06-24T21:19:43","date_gmt":"2022-06-25T02:19:43","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-the-exact-amount-of-power-that-can-derived-from-a-piezosheet\/"},"modified":"2025-01-27T06:17:34","modified_gmt":"2025-01-27T11:17:34","slug":"what-is-the-exact-amount-of-power-that-can-derived-from-a-piezosheet","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-exact-amount-of-power-that-can-derived-from-a-piezosheet\/","title":{"rendered":"V\u00fdkon piezoelektrick\u00e9 f\u00f3lie: p\u0159esn\u00e1 m\u011b\u0159en\u00ed"},"content":{"rendered":"<p>Piezoelektrick\u00e9 f\u00f3lie, zn\u00e1m\u00e9 tak\u00e9 jako piezoelektrick\u00e9 listy nebo piezo\u0161ity, p\u0159edstavuj\u00ed tenk\u00e9 a flexibiln\u00ed materi\u00e1ly schopn\u00e9 generovat elektrickou energii z mechanick\u00e9 deformace.  Ot\u00e1zka, kolik energie lze z piezo\u0161itu p\u0159esn\u011b z\u00edskat, je v\u0161ak komplexn\u00ed a z\u00e1vis\u00ed na mnoha faktorech.  Neexistuje jednozna\u010dn\u00e1 odpov\u011b\u010f, kter\u00e1 by platila univerz\u00e1ln\u011b.<\/p>\n<h3>Parametry ovliv\u0148uj\u00edc\u00ed v\u00fdstupn\u00ed v\u00fdkon<\/h3>\n<p>V\u00fdstupn\u00ed v\u00fdkon piezo\u0161itu je siln\u011b z\u00e1visl\u00fd na n\u011bkolika kl\u00ed\u010dov\u00fdch parametrech. Mezi nejd\u016fle\u017eit\u011bj\u0161\u00ed pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Rozm\u011bry piezo\u0161itu:<\/strong>  V\u011bt\u0161\u00ed plocha a tlou\u0161\u0165ka piezo\u0161itu obecn\u011b vedou k vy\u0161\u0161\u00edmu v\u00fdstupn\u00edmu v\u00fdkonu, jeliko\u017e je k dispozici v\u011bt\u0161\u00ed objem materi\u00e1lu, kter\u00fd se m\u016f\u017ee deformovat.<\/li>\n<li><strong>Typ materi\u00e1lu:<\/strong> R\u016fzn\u00e9 piezoelektrick\u00e9 materi\u00e1ly vykazuj\u00ed odli\u0161n\u00e9 piezoelektrick\u00e9 koeficienty, co\u017e p\u0159\u00edmo ovliv\u0148uje mno\u017estv\u00ed generovan\u00e9 energie.  Nap\u0159\u00edklad, n\u011bkter\u00e9 keramick\u00e9 materi\u00e1ly maj\u00ed vy\u0161\u0161\u00ed koeficienty ne\u017e polymern\u00ed piezoelektrick\u00e9 f\u00f3lie.<\/li>\n<li><strong>Frekvence a amplituda deformace:<\/strong>  V\u00fdstupn\u00ed v\u00fdkon je p\u0159\u00edmo \u00fam\u011brn\u00fd frekvenci a amplitud\u011b mechanick\u00e9 deformace. Vy\u0161\u0161\u00ed frekvence a v\u011bt\u0161\u00ed amplituda vedou k vy\u0161\u0161\u00edmu v\u00fdstupn\u00edmu v\u00fdkonu.<\/li>\n<li><strong>Zp\u016fsob deformace:<\/strong>  Zp\u016fsob, jak\u00fdm je piezo\u0161ity deformov\u00e1n (nap\u0159. tlak, ohyb, tah), ovliv\u0148uje efektivitu p\u0159em\u011bny mechanick\u00e9 energie na elektrickou.<\/li>\n<li><strong>Vnit\u0159n\u00ed odpor:<\/strong> Vnit\u0159n\u00ed odpor piezo\u0161itu ovliv\u0148uje ztr\u00e1ty energie p\u0159i generov\u00e1n\u00ed elektrick\u00e9ho proudu.<\/li>\n<\/ul>\n<h3>Tabulka srovn\u00e1n\u00ed typick\u00fdch parametr\u016f<\/h3>\n<p>N\u00e1sleduj\u00edc\u00ed tabulka ukazuje orienta\u010dn\u00ed hodnoty v\u00fdstupn\u00edho v\u00fdkonu pro r\u016fzn\u00e9 typy piezoelektrick\u00fdch f\u00f3li\u00ed p\u0159i typick\u00fdch podm\u00ednk\u00e1ch zat\u00ed\u017een\u00ed.  Je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee se jedn\u00e1 o p\u0159ibli\u017en\u00e9 hodnoty a skute\u010dn\u00fd v\u00fdstupn\u00ed v\u00fdkon se m\u016f\u017ee li\u0161it v z\u00e1vislosti na v\u00fd\u0161e zm\u00edn\u011bn\u00fdch faktorech.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ materi\u00e1lu<\/th>\n<th>Tlou\u0161\u0165ka (\u00b5m)<\/th>\n<th>Plocha (cm\u00b2)<\/th>\n<th>Frekvence (Hz)<\/th>\n<th>Amplituda (\u00b5m)<\/th>\n<th>V\u00fdstupn\u00ed v\u00fdkon (\u00b5W)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PZT keramika<\/td>\n<td>100<\/td>\n<td>1<\/td>\n<td>1000<\/td>\n<td>10<\/td>\n<td>100-500<\/td>\n<\/tr>\n<tr>\n<td>PVDF polymer<\/td>\n<td>28<\/td>\n<td>1<\/td>\n<td>1000<\/td>\n<td>10<\/td>\n<td>10-50<\/td>\n<\/tr>\n<tr>\n<td>Modifikovan\u00fd polymer<\/td>\n<td>50<\/td>\n<td>1<\/td>\n<td>1000<\/td>\n<td>10<\/td>\n<td>20-100<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Faktor zat\u00ed\u017een\u00ed a efektivita<\/h3>\n<p>Efektivita p\u0159em\u011bny mechanick\u00e9 energie na elektrickou v piezo\u0161itech je obecn\u011b n\u00edzk\u00e1, typicky v \u0159\u00e1du jednotek procent.  Faktor zat\u00ed\u017een\u00ed, kter\u00fd popisuje pom\u011br generovan\u00e9 energie k energii vynalo\u017een\u00e9 na deformaci piezo\u0161itu, je dal\u0161\u00edm d\u016fle\u017eit\u00fdm parametrem, kter\u00fd ovliv\u0148uje celkov\u00fd v\u00fdstupn\u00ed v\u00fdkon.  Optim\u00e1ln\u00ed nastaven\u00ed faktoru zat\u00ed\u017een\u00ed z\u00e1vis\u00ed na konkr\u00e9tn\u00ed aplikaci a materi\u00e1lu.<\/p>\n<h3>Z\u00e1v\u011br<\/h3>\n<p>P\u0159esn\u00e1 kvantifikace v\u00fdstupn\u00edho v\u00fdkonu piezo\u0161itu je obt\u00ed\u017en\u00e1 a vy\u017eaduje detailn\u00ed znalost v\u0161ech relevantn\u00edch parametr\u016f.  V\u00fd\u0161e uveden\u00e9 informace poskytuj\u00ed pouze orienta\u010dn\u00ed p\u0159edstavu o mo\u017en\u00fdch hodnot\u00e1ch.  Pro p\u0159esn\u00e9 ur\u010den\u00ed v\u00fdstupn\u00edho v\u00fdkonu je nezbytn\u00e9 prov\u00e9st experiment\u00e1ln\u00ed m\u011b\u0159en\u00ed s konkr\u00e9tn\u00edm typem piezo\u0161itu a za definovan\u00fdch podm\u00ednek zat\u00ed\u017een\u00ed.  V praxi je d\u016fle\u017eit\u00e9 optimalizovat v\u0161echny parametry pro dosa\u017een\u00ed maxim\u00e1ln\u00edho mo\u017en\u00e9ho v\u00fdstupn\u00edho v\u00fdkonu v dan\u00e9 aplikaci.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelektrick\u00e9 f\u00f3lie, zn\u00e1m\u00e9 tak\u00e9 jako piezoelektrick\u00e9 listy nebo piezo\u0161ity, p\u0159edstavuj\u00ed tenk\u00e9 a flexibiln\u00ed materi\u00e1ly schopn\u00e9 generovat elektrickou energii z mechanick\u00e9 deformace. Ot\u00e1zka, kolik energie lze z piezo\u0161itu p\u0159esn\u011b z\u00edskat, je v\u0161ak komplexn\u00ed a z\u00e1vis\u00ed na mnoha faktorech. Neexistuje jednozna\u010dn\u00e1 odpov\u011b\u010f, kter\u00e1 by platila univerz\u00e1ln\u011b. Parametry ovliv\u0148uj\u00edc\u00ed v\u00fdstupn\u00ed v\u00fdkon V\u00fdstupn\u00ed v\u00fdkon piezo\u0161itu je siln\u011b z\u00e1visl\u00fd na<\/p>\n","protected":false},"author":1,"featured_media":575,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-63346","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\/63346","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=63346"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63346\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/575"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=63346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=63346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=63346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}