{"id":63246,"date":"2022-07-11T17:54:43","date_gmt":"2022-07-11T22:54:43","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/are-piezo-devices-used-in-everyday-objects\/"},"modified":"2025-01-27T06:01:40","modified_gmt":"2025-01-27T11:01:40","slug":"are-piezo-devices-used-in-everyday-objects","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/are-piezo-devices-used-in-everyday-objects\/","title":{"rendered":"Piezoelektrick\u00e9 jevy v b\u011b\u017en\u00fdch p\u0159edm\u011btech: Ano \u010di ne?"},"content":{"rendered":"

Piezoelektrick\u00e9 jevy a jejich vyu\u017eit\u00ed v ka\u017edodenn\u00edch p\u0159edm\u011btech jsou p\u0159ekvapiv\u011b roz\u0161\u00ed\u0159en\u00e9, i kdy\u017e si to \u010dasto neuv\u011bdomujeme. Mnoho b\u011b\u017en\u011b pou\u017e\u00edvan\u00fdch za\u0159\u00edzen\u00ed vyu\u017e\u00edv\u00e1 vlastnosti piezoelektrick\u00fdch materi\u00e1l\u016f, kter\u00e9 p\u0159i mechanick\u00e9m nam\u00e1h\u00e1n\u00ed generuj\u00ed elektrick\u00e9 nap\u011bt\u00ed, nebo naopak, p\u0159i p\u016fsoben\u00ed elektrick\u00e9ho pole m\u011bn\u00ed sv\u016fj tvar. Tato dualita je kl\u00ed\u010dov\u00e1 pro jejich v\u0161estrann\u00e9 aplikace.<\/p>\n

Piezoelektrick\u00e9 zapalova\u010de: Klasick\u00fd p\u0159\u00edklad<\/p>\n

Nejzn\u00e1m\u011bj\u0161\u00edm p\u0159\u00edkladem vyu\u017eit\u00ed piezoelektrick\u00fdch prvk\u016f v ka\u017edodenn\u00edm \u017eivot\u011b je bezesporu piezoelektrick\u00fd zapalova\u010d. P\u0159i stisknut\u00ed tla\u010d\u00edtka se mechanicky deformuje piezoelektrick\u00fd krystal, \u010d\u00edm\u017e vznikne dostate\u010dn\u011b vysok\u00e9 nap\u011bt\u00ed k prosk\u00e1k\u00e1n\u00ed jiskry a zap\u00e1len\u00ed plynu. Jednoduchost, spolehlivost a absence nutnosti baterie d\u011blaj\u00ed z piezoelektrick\u00fdch zapalova\u010d\u016f st\u00e1le obl\u00edbenou volbu.<\/p>\n

Hodiny a bud\u00edky: P\u0159esnost z piezoelektrick\u00fdch rezon\u00e1tor\u016f<\/p>\n

Mnoho quartzov\u00fdch hodinek a bud\u00edk\u016f pou\u017e\u00edv\u00e1 piezoelektrick\u00e9 rezon\u00e1tory k p\u0159esn\u00e9mu m\u011b\u0159en\u00ed \u010dasu. K\u0159emenn\u00fd krystal, kter\u00fd je piezoelektrick\u00fd, kmit\u00e1 s velmi p\u0159esnou frekvenc\u00ed, \u0159\u00edzenou elektrick\u00fdm polem. Tato frekvence se n\u00e1sledn\u011b vyu\u017e\u00edv\u00e1 k pohonu hodinov\u00e9ho mechanismu. P\u0159esnost quartzov\u00fdch hodinek je tak p\u0159\u00edmo z\u00e1visl\u00e1 na stabilit\u011b kmit\u00e1n\u00ed piezoelektrick\u00e9ho krystalu.<\/p>\n

Senzo\u0159i v automobilov\u00e9m pr\u016fmyslu<\/p>\n

Piezoelektrick\u00e9 senzory nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v automobilov\u00e9m pr\u016fmyslu. Jsou pou\u017e\u00edv\u00e1ny jako senzory tlaku v pneumatik\u00e1ch (TPMS), senzory detonace v spalovac\u00edch motorech a senzory zrychlen\u00ed v airbagov\u00fdch syst\u00e9mech. Jejich robustnost, rychl\u00e1 odezva a schopnost m\u011b\u0159it \u0161irok\u00e9 rozsahy tlaku a zrychlen\u00ed z nich \u010din\u00ed ide\u00e1ln\u00ed sou\u010d\u00e1stky pro tato bezpe\u010dnostn\u00ed a monitorovac\u00ed za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n\n\n\n\n
Aplikace v automobilu<\/th>\nTyp senzoru<\/th>\nV\u00fdhody<\/th>\n<\/tr>\n<\/thead>\n
Syst\u00e9m monitorov\u00e1n\u00ed tlaku v pneumatik\u00e1ch (TPMS)<\/td>\nPiezoelektrick\u00fd tlakov\u00fd senzor<\/td>\nVysok\u00e1 p\u0159esnost, dlouh\u00e1 \u017eivotnost<\/td>\n<\/tr>\n
Senzor detonace<\/td>\nPiezoelektrick\u00fd akcelerometr<\/td>\nRychl\u00e1 odezva, robustn\u00ed konstrukce<\/td>\n<\/tr>\n
Airbagov\u00fd syst\u00e9m<\/td>\nPiezoelektrick\u00fd akcelerometr<\/td>\nSpolehlivost, p\u0159esn\u00e9 m\u011b\u0159en\u00ed zrychlen\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ultrazvukov\u00e9 \u010distic\u00ed p\u0159\u00edstroje: Jemn\u00e9 \u010di\u0161t\u011bn\u00ed pomoc\u00ed piezoelektrick\u00fdch prvk\u016f<\/p>\n

Ultrazvukov\u00e9 \u010distic\u00ed p\u0159\u00edstroje vyu\u017e\u00edvaj\u00ed piezoelektrick\u00e9 prvky k generov\u00e1n\u00ed ultrazvukov\u00fdch vln ve vod\u011b. Tyto vlny vytv\u00e1\u0159ej\u00ed mikroskopick\u00e9 kavitace, kter\u00e9 \u00fa\u010dinn\u011b odstra\u0148uj\u00ed ne\u010distoty z povrchu p\u0159edm\u011bt\u016f. Pou\u017e\u00edvaj\u00ed se v \u0161irok\u00e9 \u0161k\u00e1le aplikac\u00ed, od \u010di\u0161t\u011bn\u00ed \u0161perk\u016f a optick\u00fdch sou\u010d\u00e1stek a\u017e po l\u00e9ka\u0159sk\u00e9 n\u00e1stroje. Kvalita a \u00fa\u010dinnost t\u011bchto p\u0159\u00edstroj\u016f z\u00e1vis\u00ed na precizn\u00ed v\u00fdrob\u011b a charakteristik\u00e1ch pou\u017eit\u00fdch piezoelektrick\u00fdch element\u016f. I kdy\u017e nen\u00ed nutn\u00e9 zmi\u0148ovat konkr\u00e9tn\u00ed zna\u010dku, je d\u016fle\u017eit\u00e9 zd\u016fraznit, \u017ee kvalita piezoelektrick\u00fdch prvk\u016f je pro \u00fa\u010dinnost cel\u00e9ho syst\u00e9mu kritick\u00e1.<\/p>\n

Dal\u0161\u00ed aplikace v b\u011b\u017en\u00e9m \u017eivot\u011b<\/p>\n

Piezoelektrick\u00e9 technologie se nach\u00e1zej\u00ed i v dal\u0161\u00edch ka\u017edodenn\u00edch p\u0159edm\u011btech, nap\u0159\u00edklad v n\u011bkter\u00fdch typech inkoustov\u00fdch tisk\u00e1ren, kde se piezoelektrick\u00e9 prvky vyu\u017e\u00edvaj\u00ed k regulaci proudu inkoustu. Tak\u00e9 n\u011bkter\u00e9 dotykov\u00e9 displeje a senzory vyu\u017e\u00edvaj\u00ed piezoelektrick\u00fd efekt k detekci tlaku.<\/p>\n

Z\u00e1v\u011brem lze konstatovat, \u017ee piezoelektrick\u00e9 jevy a souvisej\u00edc\u00ed technologie jsou v\u0161udyp\u0159\u00edtomn\u00e9 a hraj\u00ed d\u016fle\u017eitou roli v mnoha aspektech na\u0161eho ka\u017edodenn\u00edho \u017eivota. A\u010dkoliv si jejich p\u0159\u00edtomnost \u010dasto neuv\u011bdomujeme, piezoelektrick\u00e9 prvky jsou nezbytnou sou\u010d\u00e1st\u00ed mnoha za\u0159\u00edzen\u00ed, kter\u00e1 n\u00e1m usnad\u0148uj\u00ed \u017eivot a zvy\u0161uj\u00ed jeho bezpe\u010dnost.<\/p>\n","protected":false},"excerpt":{"rendered":"

Piezoelektrick\u00e9 jevy a jejich vyu\u017eit\u00ed v ka\u017edodenn\u00edch p\u0159edm\u011btech jsou p\u0159ekvapiv\u011b roz\u0161\u00ed\u0159en\u00e9, i kdy\u017e si to \u010dasto neuv\u011bdomujeme. Mnoho b\u011b\u017en\u011b pou\u017e\u00edvan\u00fdch za\u0159\u00edzen\u00ed vyu\u017e\u00edv\u00e1 vlastnosti piezoelektrick\u00fdch materi\u00e1l\u016f, kter\u00e9 p\u0159i mechanick\u00e9m nam\u00e1h\u00e1n\u00ed generuj\u00ed elektrick\u00e9 nap\u011bt\u00ed, nebo naopak, p\u0159i p\u016fsoben\u00ed elektrick\u00e9ho pole m\u011bn\u00ed sv\u016fj tvar. Tato dualita je kl\u00ed\u010dov\u00e1 pro jejich v\u0161estrann\u00e9 aplikace. Piezoelektrick\u00e9 zapalova\u010de: Klasick\u00fd p\u0159\u00edklad Nejzn\u00e1m\u011bj\u0161\u00edm p\u0159\u00edkladem<\/p>\n","protected":false},"author":1,"featured_media":5005,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-63246","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\/63246","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=63246"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63246\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/5005"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=63246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=63246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=63246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}