{"id":60284,"date":"2023-04-21T22:21:52","date_gmt":"2023-04-22T03:21:52","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-generate-ultrasonic-waves-at-home\/"},"modified":"2025-01-27T06:08:31","modified_gmt":"2025-01-27T11:08:31","slug":"how-to-generate-ultrasonic-waves-at-home","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/how-to-generate-ultrasonic-waves-at-home\/","title":{"rendered":"Generov\u00e1n\u00ed ultrazvuku doma: Jednoduch\u00fd n\u00e1vod"},"content":{"rendered":"

Generov\u00e1n\u00ed ultrazvukov\u00fdch vln doma m\u016f\u017ee zn\u00edt jako slo\u017eit\u00fd \u00fakol, ale s trochou kreativity a dostupn\u00fdch materi\u00e1l\u016f je to mo\u017en\u00e9. Samoz\u0159ejm\u011b, nebudeme generovat ultrazvukov\u00e9 vlny s intenzitou pr\u016fmyslov\u00e9ho za\u0159\u00edzen\u00ed, ale pro demonstra\u010dn\u00ed \u00fa\u010dely a jednoduch\u00e9 experimenty to posta\u010d\u00ed. D\u016fle\u017eit\u00e9 je v\u017edy db\u00e1t na bezpe\u010dnost a chr\u00e1nit sv\u016fj sluch p\u0159ed potenci\u00e1ln\u011b \u0161kodliv\u00fdm hlukem.<\/p>\n

Piezoelektrick\u00fd efekt: Z\u00e1klad generov\u00e1n\u00ed ultrazvuku<\/p>\n

Ultrazvukov\u00e9 vlny jsou zvukov\u00e9 vlny s frekvenc\u00ed nad 20 kHz, tedy nad hranic\u00ed sly\u0161itelnosti lidsk\u00e9ho ucha. Jedn\u00edm z nej\u010dast\u011bj\u0161\u00edch zp\u016fsob\u016f jejich generov\u00e1n\u00ed je vyu\u017eit\u00ed piezoelektrick\u00e9ho efektu. Tento efekt popisuje schopnost n\u011bkter\u00fdch krystalick\u00fdch materi\u00e1l\u016f, nap\u0159\u00edklad k\u0159emene nebo speci\u00e1ln\u00edch keramick\u00fdch materi\u00e1l\u016f, generovat elektrick\u00e9 nap\u011bt\u00ed p\u0159i mechanick\u00e9m nam\u00e1h\u00e1n\u00ed, a naopak, m\u011bnit sv\u016fj tvar p\u0159i aplikaci elektrick\u00e9ho pole. Pro generov\u00e1n\u00ed ultrazvuku se vyu\u017e\u00edv\u00e1 pr\u00e1v\u011b druh\u00e1 vlastnost \u2013 zm\u011bna tvaru pod vlivem rychle pulzuj\u00edc\u00edho elektrick\u00e9ho nap\u011bt\u00ed. Kmit\u00e1n\u00ed piezoelektrick\u00e9ho prvku pak generuje ultrazvukov\u00e9 vlny.<\/p>\n

Dostupn\u00e9 materi\u00e1ly pro dom\u00e1c\u00ed experiment<\/p>\n

Pro generov\u00e1n\u00ed ultrazvuku doma budete pot\u0159ebovat piezoelektrick\u00fd prvek. Tyto prvky se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v r\u016fzn\u00fdch za\u0159\u00edzen\u00edch, nap\u0159\u00edklad v zapalova\u010d\u00edch na plynov\u00e9 spor\u00e1ky. Dal\u0161\u00edm d\u016fle\u017eit\u00fdm komponentem je gener\u00e1tor sign\u00e1lu, kter\u00fd bude dod\u00e1vat piezoelektrick\u00e9mu prvku rychle pulzuj\u00edc\u00ed nap\u011bt\u00ed. To lze zkonstruovat z mikrokontrol\u00e9ru (nap\u0159\u00edklad Arduino) a vhodn\u00e9ho obvodu. Alternativn\u011b, pro jednodu\u0161\u0161\u00ed experimenty, lze pou\u017e\u00edt ultrazvukov\u00fd vys\u00edla\u010d z po\u0161kozen\u00e9ho d\u00e1lkov\u00e9ho ovlada\u010de, ov\u0161em jeho frekvence a v\u00fdkon budou omezen\u00e9.<\/p>\n\n\n\n\n\n\n\n\n
Materi\u00e1l<\/th>\nZdroj<\/th>\nPozn\u00e1mka<\/th>\n<\/tr>\n<\/thead>\n
Piezoelektrick\u00fd prvek<\/td>\nZapalova\u010d na plynov\u00fd spor\u00e1k, ultrazvukov\u00fd \u010disti\u010d (po\u0161kozen\u00fd)<\/td>\nPot\u0159eba opatrnosti p\u0159i manipulaci.<\/td>\n<\/tr>\n
Gener\u00e1tor sign\u00e1lu<\/td>\nArduino s vhodn\u00fdm obvodem, ultrazvukov\u00fd modul<\/td>\nArduino vy\u017eaduje znalosti programov\u00e1n\u00ed.<\/td>\n<\/tr>\n
Nap\u00e1jec\u00ed zdroj<\/td>\nBaterie, USB zdroj<\/td>\nNap\u011bt\u00ed a proud mus\u00ed b\u00fdt kompatibiln\u00ed s pou\u017eit\u00fdmi sou\u010d\u00e1stkami.<\/td>\n<\/tr>\n
Osiloskop (voliteln\u00e9)<\/td>\nElektronick\u00fd obchod<\/td>\nPro m\u011b\u0159en\u00ed frekvence a amplitudy generovan\u00e9ho sign\u00e1lu.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Bezpe\u010dnostn\u00ed opat\u0159en\u00ed<\/p>\n

P\u0159i pr\u00e1ci s ultrazvukem je d\u016fle\u017eit\u00e9 dodr\u017eovat bezpe\u010dnostn\u00ed opat\u0159en\u00ed. I kdy\u017e intenzita ultrazvuku generovan\u00e9ho doma bude n\u00edzk\u00e1, dlouhodob\u00e1 expozice m\u016f\u017ee b\u00fdt \u0161kodliv\u00e1. Proto doporu\u010dujeme:<\/p>\n

    \n
  • Ochrana sluchu:<\/strong> I kdy\u017e ultrazvuk nen\u00ed sly\u0161iteln\u00fd, m\u016f\u017ee zp\u016fsobovat nep\u0159\u00edjemn\u00e9 pocity a potenci\u00e1ln\u011b po\u0161kodit vnit\u0159n\u00ed ucho p\u0159i vysok\u00fdch intenzit\u00e1ch. <\/li>\n
  • Omezte dobu expozice:<\/strong> Nevystavujte se ultrazvuku p\u0159\u00edli\u0161 dlouho.<\/li>\n
  • Opakovan\u00e9 testov\u00e1n\u00ed:<\/strong> Nevystavujte se experiment\u016fm opakovan\u011b bez p\u0159est\u00e1vek.<\/li>\n
  • Pou\u017e\u00edvejte ochrann\u00e9 pom\u016fcky:<\/strong> V p\u0159\u00edpad\u011b pot\u0159eby pou\u017eijte ochrann\u00e9 br\u00fdle, aby se zabr\u00e1nilo mo\u017en\u00e9mu po\u0161kozen\u00ed o\u010d\u00ed.<\/li>\n<\/ul>\n

    Z\u00e1v\u011br<\/p>\n

    Generov\u00e1n\u00ed ultrazvukov\u00fdch vln doma je mo\u017en\u00e9, ale vy\u017eaduje pe\u010dlivou p\u0159\u00edpravu a dodr\u017eov\u00e1n\u00ed bezpe\u010dnostn\u00edch opat\u0159en\u00ed. Pou\u017eit\u00ed dostupn\u00fdch materi\u00e1l\u016f a z\u00e1kladn\u00edch elektronick\u00fdch znalost\u00ed umo\u017en\u00ed vytvo\u0159it jednoduch\u00fd syst\u00e9m pro demonstraci princip\u016f ultrazvuku. Je v\u0161ak d\u016fle\u017eit\u00e9 si uv\u011bdomit limity takov\u00e9ho dom\u00e1c\u00edho za\u0159\u00edzen\u00ed a v\u017edy d\u00e1vat p\u0159ednost bezpe\u010dnosti p\u0159ed v\u00fdkonem.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Generov\u00e1n\u00ed ultrazvukov\u00fdch vln doma m\u016f\u017ee zn\u00edt jako slo\u017eit\u00fd \u00fakol, ale s trochou kreativity a dostupn\u00fdch materi\u00e1l\u016f je to mo\u017en\u00e9. Samoz\u0159ejm\u011b, nebudeme generovat ultrazvukov\u00e9 vlny s intenzitou pr\u016fmyslov\u00e9ho za\u0159\u00edzen\u00ed, ale pro demonstra\u010dn\u00ed \u00fa\u010dely a jednoduch\u00e9 experimenty to posta\u010d\u00ed. D\u016fle\u017eit\u00e9 je v\u017edy db\u00e1t na bezpe\u010dnost a chr\u00e1nit sv\u016fj sluch p\u0159ed potenci\u00e1ln\u011b \u0161kodliv\u00fdm hlukem. Piezoelektrick\u00fd efekt: Z\u00e1klad generov\u00e1n\u00ed<\/p>\n","protected":false},"author":1,"featured_media":26474,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-60284","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\/60284","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=60284"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/60284\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26474"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=60284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=60284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=60284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}