{"id":62371,"date":"2023-04-21T12:35:48","date_gmt":"2023-04-21T17:35:48","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-bone-conduction-transducer\/"},"modified":"2025-01-27T06:02:42","modified_gmt":"2025-01-27T11:02:42","slug":"diy-bone-conduction-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/diy-bone-conduction-transducer\/","title":{"rendered":"DIY kostn\u00ed vodivostn\u00ed p\u0159evodn\u00edk: krok za krokem"},"content":{"rendered":"<p>Vytvo\u0159en\u00ed vlastn\u00edho kostn\u00edho vodivostn\u00edho p\u0159evodn\u00edku je fascinuj\u00edc\u00ed projekt, kter\u00fd kombinuje elektroniku, fyziku a trochu manu\u00e1ln\u00ed zru\u010dnosti.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na kl\u00ed\u010dov\u00e9 aspekty n\u00e1vrhu a konstrukce takov\u00e9ho za\u0159\u00edzen\u00ed, od v\u00fdb\u011bru materi\u00e1l\u016f a\u017e po fin\u00e1ln\u00ed sestaven\u00ed a testov\u00e1n\u00ed.  Proces je n\u00e1ro\u010dn\u011bj\u0161\u00ed, ne\u017e se na prvn\u00ed pohled zd\u00e1, ale v\u00fdsledek \u2013 mo\u017enost poslouchat zvuk p\u0159\u00edmo p\u0159es kosti \u2013 stoj\u00ed za n\u00e1mahu.<\/p>\n<h3>V\u00fdb\u011br materi\u00e1l\u016f<\/h3>\n<p>Z\u00e1kladem kostn\u00edho vodivostn\u00edho p\u0159evodn\u00edku je piezoelektrick\u00fd materi\u00e1l, kter\u00fd dok\u00e1\u017ee p\u0159ev\u00e9st elektrick\u00fd sign\u00e1l na mechanick\u00e9 vibrace.  Nej\u010dast\u011bji se pou\u017e\u00edvaj\u00ed piezoelektrick\u00e9 keramick\u00e9 desti\u010dky.  Je d\u016fle\u017eit\u00e9 zvolit materi\u00e1l s vhodnou rezonan\u010dn\u00ed frekvenc\u00ed pro sly\u0161iteln\u00e9 spektrum (p\u0159ibli\u017en\u011b 20 Hz \u2013 20 kHz).  Kvalita zvuku z\u00e1vis\u00ed zna\u010dn\u011b na volb\u011b materi\u00e1lu a jeho vlastnostech.  Dal\u0161\u00edmi d\u016fle\u017eit\u00fdmi sou\u010d\u00e1stkami jsou miniaturn\u00ed reproduktor, zesilova\u010d a zdroj nap\u00e1jen\u00ed (nap\u0159. baterie).  Pro upevn\u011bn\u00ed a ut\u011bsn\u011bn\u00ed se hod\u00ed epoxidov\u00e1 prysky\u0159ice a silikonov\u00e9 t\u011bsn\u011bn\u00ed.  Konstrukce pouzdra vy\u017eaduje odoln\u00fd a biokompatibiln\u00ed materi\u00e1l, nap\u0159\u00edklad l\u00e9ka\u0159sk\u00fd silikon nebo speci\u00e1ln\u00ed plasty.<\/p>\n<h3>N\u00e1vrh a konstrukce<\/h3>\n<p>Nejprve je nutn\u00e9 navrhnout tvar a velikost p\u0159evodn\u00edku tak, aby co nejl\u00e9pe p\u0159il\u00e9hal k kostem za uchem (mastoidn\u00ed v\u00fdb\u011b\u017eek).  Tvar by m\u011bl b\u00fdt ergonomick\u00fd a pohodln\u00fd pro dlouhodob\u00e9 no\u0161en\u00ed.  Piezoelektrick\u00e1 desti\u010dka je kl\u00ed\u010dovou sou\u010d\u00e1st\u00ed a jej\u00ed um\u00edst\u011bn\u00ed a orientace ovliv\u0148uj\u00ed \u00fa\u010dinnost p\u0159enosu vibrac\u00ed.  Miniaturn\u00ed reproduktor je p\u0159ipojen k piezoelektrick\u00e9 desti\u010dce a zesilova\u010di.  Zesilova\u010d je zodpov\u011bdn\u00fd za zes\u00edlen\u00ed audio sign\u00e1lu p\u0159ed jeho p\u0159enosem na piezoelektrickou desti\u010dku.  Cel\u00fd syst\u00e9m by m\u011bl b\u00fdt chr\u00e1n\u011bn v odoln\u00e9m a vod\u011bodoln\u00e9m pouzdru.<\/p>\n<h3>Elektronick\u00e1 \u010d\u00e1st<\/h3>\n<p>Elektronick\u00e1 \u010d\u00e1st p\u0159evodn\u00edku zahrnuje zesilova\u010d, kter\u00fd mus\u00ed b\u00fdt dostate\u010dn\u011b v\u00fdkonn\u00fd pro generov\u00e1n\u00ed dostate\u010dn\u00fdch vibrac\u00ed, ale z\u00e1rove\u0148 dostate\u010dn\u011b mal\u00fd pro integraci do pouzdra.  V\u00fdb\u011br vhodn\u00e9ho zesilova\u010de z\u00e1vis\u00ed na dostupnosti sou\u010d\u00e1stek a na po\u017eadovan\u00e9 kvalit\u011b zvuku.  D\u00e1le je pot\u0159eba zdroj nap\u00e1jen\u00ed, ide\u00e1ln\u011b mal\u00e1, lehk\u00e1 baterie s dostate\u010dnou kapacitou.  Sch\u00e9ma zapojen\u00ed mus\u00ed b\u00fdt pe\u010dliv\u011b navr\u017eeno a otestov\u00e1no p\u0159ed fin\u00e1ln\u00edm sestaven\u00edm.<\/p>\n<h3>Srovn\u00e1n\u00ed materi\u00e1l\u016f<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Materi\u00e1l<\/th>\n<th>V\u00fdhody<\/th>\n<th>Nev\u00fdhody<\/th>\n<th>Cena<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Piezoelektrick\u00e1 keramika<\/td>\n<td>Vysok\u00e1 \u00fa\u010dinnost, \u0161irok\u00e1 dostupnost<\/td>\n<td>K\u0159ehk\u00e1, m\u016f\u017ee se po\u0161kodit p\u0159i p\u00e1du<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Piezoelektrick\u00fd polymer<\/td>\n<td>Flexibiln\u00ed, odoln\u00e1 proti po\u0161kozen\u00ed<\/td>\n<td>Ni\u017e\u0161\u00ed \u00fa\u010dinnost ne\u017e keramika<\/td>\n<td>Vysok\u00e1<\/td>\n<\/tr>\n<tr>\n<td>MEMS senzory<\/td>\n<td>Miniaturizace, n\u00edzk\u00e1 spot\u0159eba energie<\/td>\n<td>Vysok\u00e1 cena, slo\u017eit\u011bj\u0161\u00ed integrace<\/td>\n<td>Velmi vysok\u00e1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Testov\u00e1n\u00ed a lad\u011bn\u00ed<\/h3>\n<p>Po sestaven\u00ed je nutn\u00e9 otestovat funk\u010dnost p\u0159evodn\u00edku.  To zahrnuje ov\u011b\u0159en\u00ed kvality zvuku, \u00farovn\u011b vibrac\u00ed a celkov\u00e9 \u00fa\u010dinnosti.  M\u016f\u017ee b\u00fdt nutn\u00e9 upravit design nebo elektroniku pro optimalizaci v\u00fdkonu.  Testov\u00e1n\u00ed by m\u011blo prob\u00edhat v kontrolovan\u00e9m prost\u0159ed\u00ed s vyu\u017eit\u00edm m\u011b\u0159ic\u00ed techniky pro objektivn\u00ed posouzen\u00ed.<\/p>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee konstrukce DIY kostn\u00edho vodivostn\u00edho p\u0159evodn\u00edku je n\u00e1ro\u010dn\u00fd, ale obohacuj\u00edc\u00ed projekt.  Vy\u017eaduje pe\u010dliv\u00fd v\u00fdb\u011br materi\u00e1l\u016f, precizn\u00ed konstrukci a d\u016fkladn\u00e9 testov\u00e1n\u00ed.  V\u00fdsledkem v\u0161ak m\u016f\u017ee b\u00fdt funk\u010dn\u00ed a unik\u00e1tn\u00ed za\u0159\u00edzen\u00ed s mnoha potenci\u00e1ln\u00edmi aplikacemi.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vytvo\u0159en\u00ed vlastn\u00edho kostn\u00edho vodivostn\u00edho p\u0159evodn\u00edku je fascinuj\u00edc\u00ed projekt, kter\u00fd kombinuje elektroniku, fyziku a trochu manu\u00e1ln\u00ed zru\u010dnosti. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na kl\u00ed\u010dov\u00e9 aspekty n\u00e1vrhu a konstrukce takov\u00e9ho za\u0159\u00edzen\u00ed, od v\u00fdb\u011bru materi\u00e1l\u016f a\u017e po fin\u00e1ln\u00ed sestaven\u00ed a testov\u00e1n\u00ed. Proces je n\u00e1ro\u010dn\u011bj\u0161\u00ed, ne\u017e se na prvn\u00ed pohled zd\u00e1, ale v\u00fdsledek \u2013 mo\u017enost poslouchat zvuk p\u0159\u00edmo p\u0159es kosti<\/p>\n","protected":false},"author":1,"featured_media":26942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-62371","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\/62371","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=62371"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/62371\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26942"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=62371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=62371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=62371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}