{"id":48132,"date":"2023-04-21T23:39:12","date_gmt":"2023-04-22T04:39:12","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-homemade-pressure-sensor\/"},"modified":"2025-01-21T07:19:15","modified_gmt":"2025-01-21T12:19:15","slug":"how-to-make-homemade-pressure-sensor","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-make-homemade-pressure-sensor\/","title":{"rendered":"T\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u01a1n gi\u1ea3n t\u1ea1i nh\u00e0"},"content":{"rendered":"

Vi\u1ec7c t\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t t\u1ea1i nh\u00e0 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u01a1n gi\u1ea3n b\u1eb1ng nh\u1eefng v\u1eadt li\u1ec7u d\u1ec5 ki\u1ebfm.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n

C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc 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 c\u1ea3m bi\u1ebfn, n\u00f3 s\u1ebd l\u00e0m thay \u0111\u1ed5i m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd n\u00e0o \u0111\u00f3 (nh\u01b0 \u0111i\u1ec7n tr\u1edf, \u0111i\u1ec7n dung), v\u00e0 s\u1ef1 thay \u0111\u1ed5i n\u00e0y \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u1ec3 \u0111o l\u01b0\u1eddng. Ch\u00fang ta s\u1ebd t\u1eadp trung v\u00e0o lo\u1ea1i c\u1ea3m bi\u1ebfn s\u1eed d\u1ee5ng \u0111i\u1ec7n tr\u1edf thay \u0111\u1ed5i theo \u00e1p su\u1ea5t.<\/p>\n

V\u1eadt li\u1ec7u c\u1ea7n chu\u1ea9n b\u1ecb<\/h3>\n\n\n\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\nM\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
M\u00e0ng m\u1ecfng d\u1eabn \u0111i\u1ec7n (v\u00ed d\u1ee5: gi\u1ea5y b\u1ea1c)<\/td>\nD\u00f9ng l\u00e0m m\u00e0ng c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t.<\/td>\n<\/tr>\n
V\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n m\u1ecfng (v\u00ed d\u1ee5: b\u0103ng keo hai m\u1eb7t m\u1ecfng)<\/td>\nD\u00f9ng \u0111\u1ec3 c\u00e1ch \u0111i\u1ec7n gi\u1eefa c\u00e1c l\u1edbp.<\/td>\n<\/tr>\n
Mi\u1ebfng b\u00eca c\u1ee9ng ho\u1eb7c nh\u1ef1a m\u1ecfng<\/td>\nD\u00f9ng l\u00e0m \u0111\u1ebf cho c\u1ea3m bi\u1ebfn.<\/td>\n<\/tr>\n
D\u00e2y d\u1eabn \u0111i\u1ec7n<\/td>\nD\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn v\u1edbi m\u1ea1ch \u0111i\u1ec7n.<\/td>\n<\/tr>\n
\u0110i\u1ec7n tr\u1edf c\u1ed1 \u0111\u1ecbnh (v\u00ed d\u1ee5: 1 k\u03a9)<\/td>\nD\u00f9ng \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ea1ch c\u1ea7u \u0111i\u1ec7n tr\u1edf.<\/td>\n<\/tr>\n
Arduino ho\u1eb7c m\u1ea1ch vi \u0111i\u1ec1u khi\u1ec3n kh\u00e1c (t\u00f9y ch\u1ecdn)<\/td>\nD\u00f9ng \u0111\u1ec3 \u0111\u1ecdc v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u t\u1eeb c\u1ea3m bi\u1ebfn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n<\/h3>\n
    \n
  1. C\u1eaft mi\u1ebfng b\u00eca c\u1ee9ng ho\u1eb7c nh\u1ef1a m\u1ecfng th\u00e0nh h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt t\u00f9y \u00fd. \u0110\u00e2y s\u1ebd l\u00e0 \u0111\u1ebf c\u1ee7a c\u1ea3m bi\u1ebfn.<\/li>\n
  2. D\u00e1n m\u1ed9t l\u1edbp b\u0103ng keo hai m\u1eb7t l\u00ean \u0111\u1ebf.<\/li>\n
  3. D\u00e1n mi\u1ebfng m\u00e0ng m\u1ecfng d\u1eabn \u0111i\u1ec7n l\u00ean l\u1edbp b\u0103ng keo. \u0110\u1ea3m b\u1ea3o m\u00e0ng \u0111\u01b0\u1ee3c d\u00e1n ph\u1eb3ng v\u00e0 kh\u00f4ng b\u1ecb nh\u0103n.<\/li>\n
  4. D\u00e1n th\u00eam m\u1ed9t l\u1edbp b\u0103ng keo hai m\u1eb7t l\u00ean tr\u00ean m\u00e0ng d\u1eabn \u0111i\u1ec7n.<\/li>\n
  5. D\u00e1n m\u1ed9t mi\u1ebfng b\u00eca c\u1ee9ng ho\u1eb7c nh\u1ef1a m\u1ecfng kh\u00e1c l\u00ean tr\u00ean l\u1edbp b\u0103ng keo th\u1ee9 hai. Mi\u1ebfng n\u00e0y c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n mi\u1ebfng \u0111\u1ebf v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u1ec7ch t\u00e2m \u0111\u1ec3 t\u1ea1o ra m\u1ed9t kho\u1ea3ng tr\u1ed1ng nh\u1ecf, n\u01a1i \u00e1p su\u1ea5t s\u1ebd t\u00e1c \u0111\u1ed9ng l\u00ean m\u00e0ng d\u1eabn \u0111i\u1ec7n.<\/li>\n
  6. H\u00e0n hai d\u00e2y d\u1eabn \u0111i\u1ec7n v\u00e0o hai \u0111\u1ea7u c\u1ee7a m\u00e0ng d\u1eabn \u0111i\u1ec7n.<\/li>\n
  7. K\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn v\u1edbi m\u1ea1ch c\u1ea7u \u0111i\u1ec7n tr\u1edf. M\u1ea1ch c\u1ea7u \u0111i\u1ec7n tr\u1edf s\u1ebd gi\u00fap chuy\u1ec3n \u0111\u1ed5i s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf c\u1ee7a m\u00e0ng d\u1eabn \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p.<\/li>\n
  8. (T\u00f9y ch\u1ecdn) K\u1ebft n\u1ed1i m\u1ea1ch c\u1ea7u \u0111i\u1ec7n tr\u1edf v\u1edbi Arduino ho\u1eb7c m\u1ea1ch vi \u0111i\u1ec1u khi\u1ec3n kh\u00e1c \u0111\u1ec3 \u0111\u1ecdc v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u.<\/li>\n<\/ol>\n

    Hi\u1ec7u ch\u1ec9nh v\u00e0 th\u1eed nghi\u1ec7m<\/h3>\n

    Sau khi ho\u00e0n th\u00e0nh vi\u1ec7c l\u1eafp r\u00e1p, b\u1ea1n c\u1ea7n hi\u1ec7u ch\u1ec9nh c\u1ea3m bi\u1ebfn b\u1eb1ng c\u00e1ch t\u00e1c \u0111\u1ed9ng c\u00e1c m\u1ee9c \u00e1p su\u1ea5t kh\u00e1c nhau v\u00e0 ghi l\u1ea1i gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p t\u01b0\u01a1ng \u1ee9ng. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t b\u01a1m tay ho\u1eb7c m\u1ed9t \u1ed1ng ti\u00eam \u0111\u1ec3 t\u1ea1o \u00e1p su\u1ea5t. D\u1ef1a v\u00e0o d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c, b\u1ea1n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t \u0111\u01b0\u1eddng cong hi\u1ec7u ch\u1ec9nh \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p th\u00e0nh gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t.<\/p>\n

    T\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t tr\u1ea3i nghi\u1ec7m th\u1ef1c h\u00e0nh th\u00fa v\u1ecb m\u00e0 c\u00f2n gi\u00fap b\u1ea1n hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. M\u1eb7c d\u00f9 c\u1ea3m bi\u1ebfn t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u01b0 c\u1ea3m bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u d\u1ef1 \u00e1n nh\u1ecf v\u00e0 mang l\u1ea1i nhi\u1ec1u ki\u1ebfn th\u1ee9c b\u1ed5 \u00edch.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Vi\u1ec7c t\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t t\u1ea1i nh\u00e0 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u0111\u01a1n gi\u1ea3n b\u1eb1ng nh\u1eefng v\u1eadt<\/p>\n","protected":false},"author":1,"featured_media":26464,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-48132","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\/48132","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=48132"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/48132\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26464"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=48132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=48132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=48132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}