{"id":51996,"date":"2023-04-21T13:15:12","date_gmt":"2023-04-21T18:15:12","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-pressure-transducer\/"},"modified":"2025-01-21T07:09:02","modified_gmt":"2025-01-21T12:09:02","slug":"diy-pressure-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-pressure-transducer\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn t\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u01a1n gi\u1ea3n"},"content":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t (DIY pressure transducer) c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch cho nh\u1eefng ng\u01b0\u1eddi y\u00eau th\u00edch \u0111i\u1ec7n t\u1eed v\u00e0 mu\u1ed1n t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn. M\u1eb7c d\u00f9 c\u1ea3m bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady cao h\u01a1n, vi\u1ec7c t\u1ef1 tay l\u00e0m m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t cho ph\u00e9p b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u1ea5u t\u1ea1o v\u00e0 t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee5 th\u1ec3. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n qua c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n \u0111\u1ec3 ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u01a1n gi\u1ea3n.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n<p>C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd bi\u1ebfn \u0111\u1ed5i \u00e1p su\u1ea5t th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n.  Khi \u00e1p su\u1ea5t t\u00e1c \u0111\u1ed9ng l\u00ean ph\u1ea7n t\u1eed c\u1ea3m bi\u1ebfn, n\u00f3 s\u1ebd g\u00e2y ra s\u1ef1 thay \u0111\u1ed5i v\u1ec1 \u0111i\u1ec7n tr\u1edf, \u0111i\u1ec7n dung ho\u1eb7c \u0111i\u1ec7n \u00e1p. S\u1ef1 thay \u0111\u1ed5i n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c.<\/p>\n<h3>V\u1eadt li\u1ec7u c\u1ea7n thi\u1ebft<\/h3>\n<p>\u0110\u1ec3 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u01a1n gi\u1ea3n, b\u1ea1n s\u1ebd c\u1ea7n c\u00e1c v\u1eadt li\u1ec7u sau:<\/p>\n<ul>\n<li>M\u00e0ng c\u1ea3m bi\u1ebfn (v\u00ed d\u1ee5: m\u00e0ng b\u00f3ng bay)<\/li>\n<li>\u0110i\u1ec7n tr\u1edf bi\u1ebfn \u0111\u1ed5i theo l\u1ef1c (Force Sensitive Resistor &#8211; FSR)<\/li>\n<li>B\u1ea3ng m\u1ea1ch Arduino (ho\u1eb7c b\u1ea5t k\u1ef3 vi \u0111i\u1ec1u khi\u1ec3n n\u00e0o)<\/li>\n<li>D\u00e2y n\u1ed1i<\/li>\n<li>Keo d\u00e1n<\/li>\n<li>V\u1eadt li\u1ec7u \u0111\u1ec3 l\u00e0m v\u1ecf b\u1ea3o v\u1ec7 (t\u00f9y ch\u1ecdn)<\/li>\n<\/ul>\n<h3>C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n<\/h3>\n<ol>\n<li>D\u00e1n FSR l\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng c\u1ee9ng.<\/li>\n<li>C\u1eaft m\u00e0ng c\u1ea3m bi\u1ebfn th\u00e0nh h\u00ecnh tr\u00f2n v\u00e0 d\u00e1n l\u00ean tr\u00ean FSR, \u0111\u1ea3m b\u1ea3o m\u00e0ng c\u0103ng \u0111\u1ec1u v\u00e0 kh\u00f4ng b\u1ecb nh\u0103n.<\/li>\n<li>N\u1ed1i FSR v\u1edbi Arduino. M\u1ed9t ch\u00e2n c\u1ee7a FSR n\u1ed1i v\u1edbi ch\u00e2n analog c\u1ee7a Arduino, ch\u00e2n c\u00f2n l\u1ea1i n\u1ed1i v\u1edbi \u0111i\u1ec7n tr\u1edf k\u00e9o l\u00ean (pull-up resistor) v\u00e0 sau \u0111\u00f3 n\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n.<\/li>\n<li>Vi\u1ebft ch\u01b0\u01a1ng tr\u00ecnh cho Arduino \u0111\u1ec3 \u0111\u1ecdc gi\u00e1 tr\u1ecb analog t\u1eeb FSR v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t.<\/li>\n<\/ol>\n<h3>Hi\u1ec7u ch\u1ec9nh c\u1ea3m bi\u1ebfn<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u00c1p su\u1ea5t (Pa)<\/th>\n<th>Gi\u00e1 tr\u1ecb Analog<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>100<\/td>\n<td>X<\/td>\n<\/tr>\n<tr>\n<td>200<\/td>\n<td>Y<\/td>\n<\/tr>\n<tr>\n<td>300<\/td>\n<td>Z<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>L\u01b0u \u00fd: Gi\u00e1 tr\u1ecb X, Y, Z c\u1ea7n \u0111\u01b0\u1ee3c \u0111o th\u1ef1c t\u1ebf v\u00e0 \u0111i\u1ec1n v\u00e0o b\u1ea3ng.<\/em><\/p>\n<p>Sau khi \u0111o \u0111\u01b0\u1ee3c c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c n\u1ed9i suy ho\u1eb7c l\u1eadp tr\u00ecnh cho Arduino \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u00e1 tr\u1ecb analog th\u00e0nh gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t.<\/p>\n<h3>\u1ee8ng d\u1ee5ng<\/h3>\n<p>C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n nh\u01b0:<\/p>\n<ul>\n<li>\u0110o \u00e1p su\u1ea5t l\u1ed1p xe.<\/li>\n<li>\u0110o \u00e1p su\u1ea5t n\u01b0\u1edbc.<\/li>\n<li>C\u1ea3m bi\u1ebfn tr\u1ecdng l\u01b0\u1ee3ng.<\/li>\n<li>N\u00fat b\u1ea5m c\u1ea3m \u1ee9ng l\u1ef1c.<\/li>\n<\/ul>\n<h3>L\u01b0u \u00fd<\/h3>\n<p>C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t t\u1ef1 ch\u1ebf th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh th\u1ea5p h\u01a1n so v\u1edbi c\u1ea3m bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i.  Vi\u1ec7c hi\u1ec7u ch\u1ec9nh c\u1ea3m bi\u1ebfn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c.  N\u1ebfu c\u1ea7n \u0111o \u00e1p su\u1ea5t v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, n\u00ean s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t th\u01b0\u01a1ng m\u1ea1i.<\/p>\n<p>T\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t l\u00e0 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi \u0111\u1ec3 h\u1ecdc h\u1ecfi v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3.  M\u1eb7c d\u00f9 c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c, \u0111\u00e2y l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 b\u1ed5 \u00edch cho nh\u1eefng ai mu\u1ed1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi \u0111i\u1ec7n t\u1eed.  Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n \u0111\u1ec3 b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh t\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t c\u1ee7a ri\u00eang m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t (DIY pressure transducer) c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch cho nh\u1eefng ng\u01b0\u1eddi y\u00eau th\u00edch \u0111i\u1ec7n t\u1eed v\u00e0 mu\u1ed1n t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn. M\u1eb7c d\u00f9 c\u1ea3m bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady<\/p>\n","protected":false},"author":1,"featured_media":26937,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-51996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/51996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=51996"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/51996\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26937"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=51996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=51996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=51996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}