{"id":56801,"date":"2023-04-26T01:25:30","date_gmt":"2023-04-26T06:25:30","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-pressure-transducer\/"},"modified":"2025-01-27T06:16:49","modified_gmt":"2025-01-27T11:16:49","slug":"what-is-a-pressure-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-a-pressure-transducer\/","title":{"rendered":"Tlakov\u00fd sn\u00edma\u010d: princip, funkce a pou\u017eit\u00ed"},"content":{"rendered":"<p>Tlakov\u00fd sn\u00edma\u010d je za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159ev\u00e1d\u00ed tlak plynu nebo kapaliny na elektrick\u00fd sign\u00e1l, kter\u00fd lze snadno m\u011b\u0159it a interpretovat.  Jeho \u0161irok\u00e9 uplatn\u011bn\u00ed sah\u00e1 od pr\u016fmyslov\u00e9 automatizace p\u0159es l\u00e9ka\u0159stv\u00ed a\u017e po letectv\u00ed.  Princip fungov\u00e1n\u00ed se li\u0161\u00ed v z\u00e1vislosti na typu sn\u00edma\u010de, ale v\u0161echny spojuje spole\u010dn\u00fd c\u00edl: p\u0159esn\u00e9 a spolehliv\u00e9 m\u011b\u0159en\u00ed tlaku.<\/p>\n<h3>Princip fungov\u00e1n\u00ed tlakov\u00fdch sn\u00edma\u010d\u016f<\/h3>\n<p>Z\u00e1kladn\u00ed princip spo\u010d\u00edv\u00e1 v detekci zm\u011bn fyzik\u00e1ln\u00edch vlastnost\u00ed materi\u00e1lu v d\u016fsledku p\u016fsoben\u00ed tlaku.  Tyto zm\u011bny se pak p\u0159ev\u00e1d\u011bj\u00ed na m\u011b\u0159iteln\u00fd elektrick\u00fd sign\u00e1l. Mezi nej\u010dast\u011bj\u0161\u00ed typy pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Piezoresistivn\u00ed sn\u00edma\u010de:<\/strong>  Zm\u011bna odporu polovodi\u010dov\u00e9ho materi\u00e1lu (nap\u0159. k\u0159em\u00edku) v d\u016fsledku deformace zp\u016fsoben\u00e9 tlakem.  Jsou cenov\u011b dostupn\u00e9 a p\u0159esn\u00e9 pro \u0161irok\u00fd rozsah tlak\u016f.<\/li>\n<li><strong>Kapacitn\u00ed sn\u00edma\u010de:<\/strong>  Zm\u011bna kapacity kondenz\u00e1toru v d\u016fsledku zm\u011bny vzd\u00e1lenosti mezi jeho deskami zp\u016fsoben\u00e9 tlakem.  Vyzna\u010duj\u00ed se vysokou citlivost\u00ed a stabilitou.<\/li>\n<li><strong>Piezoelektrick\u00e9 sn\u00edma\u010de:<\/strong> Generuj\u00ed elektrick\u00fd n\u00e1boj v reakci na mechanick\u00e9 nam\u00e1h\u00e1n\u00ed, kter\u00e9 je zp\u016fsobeno tlakem.  Pou\u017e\u00edvaj\u00ed se pro m\u011b\u0159en\u00ed dynamick\u00fdch tlak\u016f.<\/li>\n<li><strong>Tenzoresistivn\u00ed sn\u00edma\u010de:<\/strong>  Zm\u011bna odporu tenk\u00e9ho vodi\u010de v d\u016fsledku deformace zp\u016fsoben\u00e9 tlakem.  Jsou robustn\u00ed a spolehliv\u00e9.<\/li>\n<\/ul>\n<h3>Typy tlakov\u00fdch sn\u00edma\u010d\u016f a jejich charakteristiky<\/h3>\n<p>Existuje mnoho typ\u016f tlakov\u00fdch sn\u00edma\u010d\u016f, kter\u00e9 se li\u0161\u00ed v z\u00e1vislosti na m\u011b\u0159en\u00e9m tlaku, m\u00e9diu, p\u0159esnosti a dal\u0161\u00edch parametrech.  N\u00e1sleduj\u00edc\u00ed tabulka ukazuje n\u011bkter\u00e9 z nich:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ sn\u00edma\u010de<\/th>\n<th>Rozsah m\u011b\u0159en\u00ed (kPa)<\/th>\n<th>P\u0159esnost (%)<\/th>\n<th>Aplikace<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Piezoresistivn\u00ed<\/td>\n<td>0-1000 a\u017e 0-100000<\/td>\n<td>\u00b10,5 &#8211; \u00b12<\/td>\n<td>Pr\u016fmyslov\u00e1 automatizace, automobilov\u00fd pr\u016fmysl<\/td>\n<\/tr>\n<tr>\n<td>Kapacitn\u00ed<\/td>\n<td>0-10 a\u017e 0-1000<\/td>\n<td>\u00b10,2 &#8211; \u00b11<\/td>\n<td>L\u00e9ka\u0159stv\u00ed, meteorologie<\/td>\n<\/tr>\n<tr>\n<td>Piezoelektrick\u00fd<\/td>\n<td>0-100 a\u017e 0-10000<\/td>\n<td>\u00b11 &#8211; \u00b15<\/td>\n<td>M\u011b\u0159en\u00ed dynamick\u00fdch tlak\u016f<\/td>\n<\/tr>\n<tr>\n<td>Tenzoresistivn\u00ed<\/td>\n<td>0-1000 a\u017e 0-100000<\/td>\n<td>\u00b11 &#8211; \u00b13<\/td>\n<td>Hydraulick\u00e9 syst\u00e9my<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>V\u00fdhody a nev\u00fdhody tlakov\u00fdch sn\u00edma\u010d\u016f<\/h3>\n<p>Ka\u017ed\u00fd typ tlakov\u00e9ho sn\u00edma\u010de m\u00e1 sv\u00e9 v\u00fdhody a nev\u00fdhody.  V\u00fdb\u011br vhodn\u00e9ho typu z\u00e1vis\u00ed na konkr\u00e9tn\u00ed aplikaci a po\u017eadavc\u00edch na p\u0159esnost, rozsah m\u011b\u0159en\u00ed a odolnost.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Vlastnost<\/th>\n<th>V\u00fdhody<\/th>\n<th>Nev\u00fdhody<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Piezoresistivn\u00ed<\/td>\n<td>N\u00edzk\u00e9 n\u00e1klady, \u0161irok\u00fd rozsah m\u011b\u0159en\u00ed<\/td>\n<td>Ni\u017e\u0161\u00ed p\u0159esnost ve srovn\u00e1n\u00ed s kapacitn\u00edmi<\/td>\n<\/tr>\n<tr>\n<td>Kapacitn\u00ed<\/td>\n<td>Vysok\u00e1 p\u0159esnost, stabilita<\/td>\n<td>Vy\u0161\u0161\u00ed n\u00e1klady<\/td>\n<\/tr>\n<tr>\n<td>Piezoelektrick\u00fd<\/td>\n<td>M\u011b\u0159en\u00ed dynamick\u00fdch tlak\u016f<\/td>\n<td>Omezen\u00fd rozsah m\u011b\u0159en\u00ed, citlivost na teplotu<\/td>\n<\/tr>\n<tr>\n<td>Tenzoresistivn\u00ed<\/td>\n<td>Robustnost, spolehlivost<\/td>\n<td>Ni\u017e\u0161\u00ed p\u0159esnost ve srovn\u00e1n\u00ed s kapacitn\u00edmi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Aplikace tlakov\u00fdch sn\u00edma\u010d\u016f<\/h3>\n<p>Tlakov\u00e9 sn\u00edma\u010de nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v r\u016fzn\u00fdch oborech.  Pou\u017e\u00edvaj\u00ed se nap\u0159\u00edklad v:<\/p>\n<ul>\n<li><strong>Pr\u016fmyslov\u00e9 automatizaci:<\/strong>  \u0158\u00edzen\u00ed proces\u016f, regulace tlaku v potrub\u00edch.<\/li>\n<li><strong>Automobilov\u00e9m pr\u016fmyslu:<\/strong>  M\u011b\u0159en\u00ed tlaku v pneumatik\u00e1ch, brzd\u00e1ch.<\/li>\n<li><strong>L\u00e9ka\u0159stv\u00ed:<\/strong>  M\u011b\u0159en\u00ed krevn\u00edho tlaku, tlaku v o\u010d\u00edch.<\/li>\n<li><strong>Letectv\u00ed:<\/strong>  M\u011b\u0159en\u00ed tlaku v hydraulick\u00fdch syst\u00e9mech letadel.<\/li>\n<li><strong>Meteorologii:<\/strong>  M\u011b\u0159en\u00ed atmosf\u00e9rick\u00e9ho tlaku.<\/li>\n<\/ul>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee tlakov\u00e9 sn\u00edma\u010de jsou kl\u00ed\u010dov\u00fdmi sou\u010d\u00e1stmi mnoha syst\u00e9m\u016f a za\u0159\u00edzen\u00ed.  Spr\u00e1vn\u00fd v\u00fdb\u011br typu sn\u00edma\u010de je z\u00e1sadn\u00ed pro dosa\u017een\u00ed p\u0159esn\u00fdch a spolehliv\u00fdch m\u011b\u0159en\u00ed.  Rozmanitost typ\u016f a jejich vlastnost\u00ed umo\u017e\u0148uje jejich pou\u017eit\u00ed v \u0161irok\u00e9m spektru aplikac\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tlakov\u00fd sn\u00edma\u010d je za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159ev\u00e1d\u00ed tlak plynu nebo kapaliny na elektrick\u00fd sign\u00e1l, kter\u00fd lze snadno m\u011b\u0159it a interpretovat. Jeho \u0161irok\u00e9 uplatn\u011bn\u00ed sah\u00e1 od pr\u016fmyslov\u00e9 automatizace p\u0159es l\u00e9ka\u0159stv\u00ed a\u017e po letectv\u00ed. Princip fungov\u00e1n\u00ed se li\u0161\u00ed v z\u00e1vislosti na typu sn\u00edma\u010de, ale v\u0161echny spojuje spole\u010dn\u00fd c\u00edl: p\u0159esn\u00e9 a spolehliv\u00e9 m\u011b\u0159en\u00ed tlaku. Princip fungov\u00e1n\u00ed tlakov\u00fdch sn\u00edma\u010d\u016f Z\u00e1kladn\u00ed<\/p>\n","protected":false},"author":1,"featured_media":26937,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-56801","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\/56801","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=56801"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/56801\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26937"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=56801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=56801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=56801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}