{"id":56686,"date":"2024-04-28T22:51:51","date_gmt":"2024-04-29T03:51:51","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/troubleshooting-common-piezoelectric-transducer-issues\/"},"modified":"2025-01-27T06:15:27","modified_gmt":"2025-01-27T11:15:27","slug":"troubleshooting-common-piezoelectric-transducer-issues","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/troubleshooting-common-piezoelectric-transducer-issues\/","title":{"rendered":"Odstran\u011bn\u00ed pot\u00ed\u017e\u00ed s piezoelektrick\u00fdmi sn\u00edma\u010di"},"content":{"rendered":"<p>Piezoelektrick\u00e9 sn\u00edma\u010de jsou kl\u00ed\u010dovou sou\u010d\u00e1st\u00ed mnoha aplikac\u00ed, od ultrazvukov\u00fdch \u010didel a\u017e po precizn\u00ed polohovac\u00ed syst\u00e9my.  Nicm\u00e9n\u011b, i p\u0159es jejich robustnost se mohou objevit probl\u00e9my, kter\u00e9 ovlivn\u00ed jejich v\u00fdkon.  Tento \u010dl\u00e1nek se zam\u011b\u0159uje na \u0159e\u0161en\u00ed b\u011b\u017en\u00fdch probl\u00e9m\u016f spojen\u00fdch s piezoelektrick\u00fdmi sn\u00edma\u010di, a poskytuje praktick\u00e9 rady pro jejich diagnostiku a opravu.<\/p>\n<h3>N\u00edzk\u00fd v\u00fdstupn\u00ed sign\u00e1l<\/h3>\n<p>N\u00edzk\u00fd v\u00fdstupn\u00ed sign\u00e1l je jedn\u00edm z nej\u010dast\u011bj\u0161\u00edch probl\u00e9m\u016f.  P\u0159\u00ed\u010din m\u016f\u017ee b\u00fdt n\u011bkolik.  Prvn\u00ed a nejjednodu\u0161\u0161\u00ed je zkontrolovat spr\u00e1vn\u00e9 p\u0159ipojen\u00ed sn\u00edma\u010de a kabel\u00e1\u017ee. Uvoln\u011bn\u00e9 kontakty nebo po\u0161kozen\u00e1 kabel\u00e1\u017e mohou v\u00e9st k v\u00fdrazn\u00e9mu sn\u00ed\u017een\u00ed sign\u00e1lu.  Dal\u0161\u00ed mo\u017enou p\u0159\u00ed\u010dinou je st\u00e1rnut\u00ed sn\u00edma\u010de, kter\u00e9 m\u016f\u017ee v\u00e9st k degradaci piezoelektrick\u00e9ho materi\u00e1lu a sn\u00ed\u017een\u00ed jeho citlivosti.  V takov\u00e9m p\u0159\u00edpad\u011b je nutn\u00e1 v\u00fdm\u011bna sn\u00edma\u010de.  Nespr\u00e1vn\u00e9 nap\u00e1jen\u00ed nebo nespr\u00e1vn\u00e9 nastaven\u00ed zesilova\u010de tak\u00e9 mohou v\u00e9st k n\u00edzk\u00fdm hodnot\u00e1m v\u00fdstupn\u00edho sign\u00e1lu.  V\u017edy je nutn\u00e9 zkontrolovat specifikace sn\u00edma\u010de a ujist\u011bte se, \u017ee je nap\u00e1jen spr\u00e1vn\u00fdm nap\u011bt\u00edm a proudem.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th>\n<th>\u0158e\u0161en\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Uvoln\u011bn\u00e9 kontakty<\/td>\n<td>Zkontrolujte a pevn\u011b p\u0159ipojte v\u0161echny kontakty<\/td>\n<\/tr>\n<tr>\n<td>Po\u0161kozen\u00e1 kabel\u00e1\u017e<\/td>\n<td>Vym\u011b\u0148te po\u0161kozenou kabel\u00e1\u017e<\/td>\n<\/tr>\n<tr>\n<td>St\u00e1rnut\u00ed sn\u00edma\u010de<\/td>\n<td>Vym\u011b\u0148te sn\u00edma\u010d<\/td>\n<\/tr>\n<tr>\n<td>Nespr\u00e1vn\u00e9 nap\u00e1jen\u00ed<\/td>\n<td>Zkontrolujte a opravte nap\u00e1jec\u00ed nap\u011bt\u00ed a proud<\/td>\n<\/tr>\n<tr>\n<td>Nespr\u00e1vn\u00e9 nastaven\u00ed zesilova\u010de<\/td>\n<td>Zkontrolujte a upravte nastaven\u00ed zesilova\u010de<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u0160um a interference<\/h3>\n<p>\u0160um a interference v sign\u00e1lu mohou b\u00fdt zp\u016fsobeny extern\u00edmi elektromagnetick\u00fdmi poli, vibracemi nebo teplotn\u00edmi zm\u011bnami.  Elektromagnetick\u00e9 ru\u0161en\u00ed lze minimalizovat st\u00edn\u011bn\u00edm kabel\u00e1\u017ee a pou\u017eit\u00edm filtr\u016f. Vibrace mohou b\u00fdt potla\u010deny vhodn\u00fdm upevn\u011bn\u00edm sn\u00edma\u010de.  Teplotn\u00ed zm\u011bny mohou ovlivnit vlastnosti piezoelektrick\u00e9ho materi\u00e1lu, proto je d\u016fle\u017eit\u00e9 zvolit sn\u00edma\u010d s vhodn\u00fdm teplotn\u00edm rozsahem provozu.  V n\u011bkter\u00fdch p\u0159\u00edpadech m\u016f\u017ee b\u00fdt nutn\u00e9 pou\u017e\u00edt teplotn\u00ed kompenzaci.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Zdroj interference<\/th>\n<th>\u0158e\u0161en\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Elektromagnetick\u00e9 ru\u0161en\u00ed<\/td>\n<td>St\u00edn\u011bn\u00ed kabel\u00e1\u017ee, filtry<\/td>\n<\/tr>\n<tr>\n<td>Vibrace<\/td>\n<td>Vhodn\u00e9 upevn\u011bn\u00ed sn\u00edma\u010de<\/td>\n<\/tr>\n<tr>\n<td>Teplotn\u00ed zm\u011bny<\/td>\n<td>Vhodn\u00fd teplotn\u00ed rozsah sn\u00edma\u010de, teplotn\u00ed kompenzace<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Nespr\u00e1vn\u00e1 kalibrace<\/h3>\n<p>Nespr\u00e1vn\u00e1 kalibrace sn\u00edma\u010de m\u016f\u017ee v\u00e9st k nep\u0159esn\u00fdm m\u011b\u0159en\u00edm.  Pravideln\u00e1 kalibrace je proto nezbytn\u00e1, zvl\u00e1\u0161t\u011b u aplikac\u00ed vy\u017eaduj\u00edc\u00edch vysokou p\u0159esnost.  Postup kalibrace se li\u0161\u00ed v z\u00e1vislosti na typu sn\u00edma\u010de a aplikaci, ale obvykle zahrnuje pou\u017eit\u00ed kalibra\u010dn\u00edch standard\u016f a softwaru pro \u00fapravu v\u00fdstupn\u00edho sign\u00e1lu.  V p\u0159\u00edpad\u011b pot\u0159eby je mo\u017en\u00e9 vyu\u017e\u00edt slu\u017eby kalibra\u010dn\u00edch laborato\u0159\u00ed.<\/p>\n<h3>Mechanick\u00e9 po\u0161kozen\u00ed<\/h3>\n<p>Mechanick\u00e9 po\u0161kozen\u00ed, jako jsou praskliny nebo zlomy, m\u016f\u017ee v\u00e9st k \u00fapln\u00e9 nefunk\u010dnosti sn\u00edma\u010de.  P\u0159ed pou\u017eit\u00edm je nutn\u00e9 pe\u010dliv\u011b zkontrolovat sn\u00edma\u010d na p\u0159\u00edtomnost viditeln\u00e9ho po\u0161kozen\u00ed.  V p\u0159\u00edpad\u011b po\u0161kozen\u00ed je nutn\u00e1 v\u00fdm\u011bna sn\u00edma\u010de.<\/p>\n<p>Piezoelektrick\u00e9 sn\u00edma\u010de jsou citliv\u00e9 komponenty, jejich\u017e spr\u00e1vn\u00e1 funkce z\u00e1vis\u00ed na \u0159ad\u011b faktor\u016f.  D\u016fkladn\u00e1 diagnostika a spr\u00e1vn\u00e1 \u00fadr\u017eba jsou kl\u00ed\u010dov\u00e9 pro zaji\u0161t\u011bn\u00ed dlouh\u00e9 \u017eivotnosti a spolehliv\u00e9ho provozu.  V p\u0159\u00edpad\u011b slo\u017eit\u011bj\u0161\u00edch probl\u00e9m\u016f je vhodn\u00e9 vyhledat pomoc odborn\u00edka.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelektrick\u00e9 sn\u00edma\u010de jsou kl\u00ed\u010dovou sou\u010d\u00e1st\u00ed mnoha aplikac\u00ed, od ultrazvukov\u00fdch \u010didel a\u017e po precizn\u00ed polohovac\u00ed syst\u00e9my. Nicm\u00e9n\u011b, i p\u0159es jejich robustnost se mohou objevit probl\u00e9my, kter\u00e9 ovlivn\u00ed jejich v\u00fdkon. Tento \u010dl\u00e1nek se zam\u011b\u0159uje na \u0159e\u0161en\u00ed b\u011b\u017en\u00fdch probl\u00e9m\u016f spojen\u00fdch s piezoelektrick\u00fdmi sn\u00edma\u010di, a poskytuje praktick\u00e9 rady pro jejich diagnostiku a opravu. N\u00edzk\u00fd v\u00fdstupn\u00ed sign\u00e1l N\u00edzk\u00fd v\u00fdstupn\u00ed sign\u00e1l<\/p>\n","protected":false},"author":1,"featured_media":23744,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-56686","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\/56686","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=56686"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/56686\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/23744"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=56686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=56686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=56686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}