{"id":59142,"date":"2023-04-22T00:13:58","date_gmt":"2023-04-22T05:13:58","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-ultrasound-transducer\/"},"modified":"2025-01-27T06:11:34","modified_gmt":"2025-01-27T11:11:34","slug":"how-to-make-ultrasound-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/how-to-make-ultrasound-transducer\/","title":{"rendered":"V\u00fdroba ultrazvukov\u00e9ho sn\u00edma\u010de: Komplexn\u00ed pr\u016fvodce"},"content":{"rendered":"

V\u00fdroba ultrazvukov\u00e9ho sn\u00edma\u010de je komplexn\u00ed proces, vy\u017eaduj\u00edc\u00ed hlubok\u00e9 znalosti z oblasti akustiky, materi\u00e1lov\u00fdch v\u011bd a elektroniky. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na kl\u00ed\u010dov\u00e9 aspekty v\u00fdroby, od v\u00fdb\u011bru materi\u00e1l\u016f po fin\u00e1ln\u00ed sestaven\u00ed a testov\u00e1n\u00ed. Nebudeme se zab\u00fdvat detaily specifick\u00fdch v\u00fdrobn\u00edch proces\u016f pou\u017e\u00edvan\u00fdch v pr\u016fmyslov\u00e9 v\u00fdrob\u011b, ale sp\u00ed\u0161e poskytneme obecn\u00fd p\u0159ehled z\u00e1kladn\u00edch princip\u016f a postup\u016f.<\/p>\n

V\u00fdb\u011br piezoelektrick\u00e9ho materi\u00e1lu<\/h3>\n

Srdcem ultrazvukov\u00e9ho sn\u00edma\u010de je piezoelektrick\u00fd element, kter\u00fd p\u0159ev\u00e1d\u00ed elektrickou energii na mechanick\u00e9 vibrace (a naopak). Nejb\u011b\u017en\u011bji pou\u017e\u00edvan\u00fdmi materi\u00e1ly jsou r\u016fzn\u00e9 keramick\u00e9 kompozice, jako je nap\u0159\u00edklad titan\u00e1t zirkoni\u010ditan olovnat\u00fd (PZT). Volba materi\u00e1lu z\u00e1vis\u00ed na po\u017eadovan\u00e9 frekvenci, citlivosti a odolnosti sn\u00edma\u010de. D\u016fle\u017eit\u00fdm parametrem je i piezoelektrick\u00fd koeficient, kter\u00fd ur\u010duje efektivitu p\u0159em\u011bny energie.<\/p>\n\n\n\n\n\n\n\n\n
Materi\u00e1l<\/th>\nPiezoelektrick\u00fd koeficient (pC\/N)<\/th>\nFrekven\u010dn\u00ed rozsah (MHz)<\/th>\nOdolnost<\/th>\n<\/tr>\n<\/thead>\n
PZT-4<\/td>\n270-370<\/td>\n1-10<\/td>\nVysok\u00e1<\/td>\n<\/tr>\n
PZT-5A<\/td>\n370-450<\/td>\n1-10<\/td>\nVysok\u00e1<\/td>\n<\/tr>\n
PZT-5H<\/td>\n570-650<\/td>\n1-10<\/td>\nSt\u0159edn\u00ed<\/td>\n<\/tr>\n
PVDF<\/td>\n20-30<\/td>\n1-100<\/td>\nN\u00edzk\u00e1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Design a v\u00fdroba piezoelektrick\u00e9ho elementu<\/h3>\n

Piezoelektrick\u00fd element je obvykle vyroben ve tvaru tenk\u00e9ho disku nebo ty\u010dinky s p\u0159esn\u011b definovan\u00fdmi rozm\u011bry, kter\u00e9 ur\u010duj\u00ed rezonan\u010dn\u00ed frekvenci sn\u00edma\u010de. Tvar a rozm\u011bry jsou kritick\u00e9 pro dosa\u017een\u00ed po\u017eadovan\u00fdch akustick\u00fdch vlastnost\u00ed. Proces v\u00fdroby zahrnuje lisov\u00e1n\u00ed, sp\u00e9k\u00e1n\u00ed a pokovov\u00e1n\u00ed. Pokovov\u00e1n\u00ed je nezbytn\u00e9 pro p\u0159ipojen\u00ed elektrick\u00fdch kontakt\u016f.<\/p>\n

V\u00fdroba akustick\u00e9 \u010do\u010dky a krytu<\/h3>\n

Akustick\u00e1 \u010do\u010dka slou\u017e\u00ed k zaost\u0159en\u00ed ultrazvukov\u00e9ho paprsku a k ovlivn\u011bn\u00ed jeho tvaru a \u0161\u00ed\u0159ky. Materi\u00e1ly pro akustick\u00e9 \u010do\u010dky jsou vybr\u00e1ny tak, aby m\u011bly n\u00edzkou akustickou impedanci, minimalizuj\u00edc\u00ed odrazy na rozhran\u00ed mezi \u010do\u010dkou a piezoelektrick\u00fdm elementem. Kryt sn\u00edma\u010de chr\u00e1n\u00ed piezoelektrick\u00fd element p\u0159ed po\u0161kozen\u00edm a vn\u011bj\u0161\u00edmi vlivy. \u010casto se pou\u017e\u00edvaj\u00ed materi\u00e1ly jako nerezov\u00e1 ocel nebo titanov\u00fd kov.<\/p>\n

Sestaven\u00ed a zapojen\u00ed<\/h3>\n

Po vyroben\u00ed jednotliv\u00fdch komponent se sn\u00edma\u010d sestav\u00ed. Piezoelektrick\u00fd element se spoj\u00ed s akustickou \u010do\u010dkou a krytem, a to pomoc\u00ed speci\u00e1ln\u00edch lepidel s vysokou akustickou vodivost\u00ed. Elektrick\u00e9 kontakty se p\u0159ipoj\u00ed k v\u00fdvod\u016fm, kter\u00e9 jsou sou\u010d\u00e1st\u00ed krytu sn\u00edma\u010de. Kone\u010dn\u00fdm krokem je pe\u010dliv\u00e9 ut\u011bsn\u011bn\u00ed sn\u00edma\u010de, aby se zabr\u00e1nilo vniknut\u00ed vlhkosti a dal\u0161\u00edch ne\u010distot.<\/p>\n

Kalibrace a testov\u00e1n\u00ed<\/h3>\n

P\u0159ed uveden\u00edm do provozu je nezbytn\u00e9 prov\u00e9st kalibraci a testov\u00e1n\u00ed sn\u00edma\u010de. To zahrnuje m\u011b\u0159en\u00ed jeho frekven\u010dn\u00ed odezvy, citlivosti a sm\u011brovosti. Pou\u017e\u00edvaj\u00ed se k tomu speci\u00e1ln\u00ed m\u011b\u0159ic\u00ed za\u0159\u00edzen\u00ed. Testov\u00e1n\u00ed se zam\u011b\u0159uje na detekci p\u0159\u00edpadn\u00fdch vad a neshod.<\/p>\n

V\u00fdroba ultrazvukov\u00e9ho sn\u00edma\u010de je n\u00e1ro\u010dn\u00fd proces, kter\u00fd vy\u017eaduje p\u0159esnost a preciznost. Pou\u017eit\u00ed vhodn\u00fdch materi\u00e1l\u016f, pe\u010dliv\u00e1 konstrukce a kvalitn\u00ed proveden\u00ed jsou kl\u00ed\u010dov\u00e9 pro zaji\u0161t\u011bn\u00ed spolehlivosti a dlouh\u00e9 \u017eivotnosti sn\u00edma\u010de. Rozum\u011bn\u00ed z\u00e1kladn\u00edm princip\u016fm a postup\u016fm je nezbytn\u00e9 pro ka\u017ed\u00e9ho, kdo se touto oblast\u00ed zab\u00fdv\u00e1.<\/p>\n","protected":false},"excerpt":{"rendered":"

V\u00fdroba ultrazvukov\u00e9ho sn\u00edma\u010de je komplexn\u00ed proces, vy\u017eaduj\u00edc\u00ed hlubok\u00e9 znalosti z oblasti akustiky, materi\u00e1lov\u00fdch v\u011bd a elektroniky. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na kl\u00ed\u010dov\u00e9 aspekty v\u00fdroby, od v\u00fdb\u011bru materi\u00e1l\u016f po fin\u00e1ln\u00ed sestaven\u00ed a testov\u00e1n\u00ed. Nebudeme se zab\u00fdvat detaily specifick\u00fdch v\u00fdrobn\u00edch proces\u016f pou\u017e\u00edvan\u00fdch v pr\u016fmyslov\u00e9 v\u00fdrob\u011b, ale sp\u00ed\u0161e poskytneme obecn\u00fd p\u0159ehled z\u00e1kladn\u00edch princip\u016f a postup\u016f. V\u00fdb\u011br piezoelektrick\u00e9ho materi\u00e1lu<\/p>\n","protected":false},"author":1,"featured_media":24651,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-59142","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\/59142","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=59142"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/59142\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/24651"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=59142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=59142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=59142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}