{"id":51388,"date":"2023-04-21T13:52:52","date_gmt":"2023-04-21T18:52:52","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-ultrasonic-wind-sensor\/"},"modified":"2025-01-21T07:10:24","modified_gmt":"2025-01-21T12:10:24","slug":"diy-ultrasonic-wind-sensor","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-ultrasonic-wind-sensor\/","title":{"rendered":"T\u1ef1 ch\u1ebf c\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m \u0111\u01a1n gi\u1ea3n"},"content":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb cho nh\u1eefng ng\u01b0\u1eddi y\u00eau th\u00edch \u0111i\u1ec7n t\u1eed m\u00e0 c\u00f2n l\u00e0 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111o l\u01b0\u1eddng gi\u00f3.  C\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m mang l\u1ea1i nhi\u1ec1u l\u1ee3i th\u1ebf so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111o gi\u00f3 truy\u1ec1n th\u1ed1ng nh\u01b0 c\u00e1nh qu\u1ea1t, bao g\u1ed3m \u0111\u1ed9 ch\u00ednh x\u00e1c cao, kh\u00f4ng c\u00f3 b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng d\u1ec5 b\u1ecb m\u00f2n v\u00e0 kh\u1ea3 n\u0103ng \u0111o gi\u00f3 \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n<p>C\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd \u0111o th\u1eddi gian truy\u1ec1n s\u00f3ng \u00e2m thanh gi\u1eefa hai b\u1ed9 chuy\u1ec3n \u0111\u1ed5i.  M\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u00e1t ra s\u00f3ng si\u00eau \u00e2m, v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i c\u00f2n l\u1ea1i nh\u1eadn s\u00f3ng n\u00e0y.  Gi\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n \u00e2m thanh, do \u0111\u00f3 b\u1eb1ng c\u00e1ch \u0111o th\u1eddi gian truy\u1ec1n s\u00f3ng theo c\u1ea3 hai chi\u1ec1u, ta c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 v\u00e0 h\u01b0\u1edbng gi\u00f3.<\/p>\n<h3>Linh ki\u1ec7n c\u1ea7n thi\u1ebft<\/h3>\n<p>\u0110\u1ec3 t\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c linh ki\u1ec7n sau:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Linh ki\u1ec7n<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<th>S\u1ed1 l\u01b0\u1ee3ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i si\u00eau \u00e2m<\/td>\n<td>40kHz l\u00e0 t\u1ea7n s\u1ed1 ph\u1ed5 bi\u1ebfn<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>Vi \u0111i\u1ec1u khi\u1ec3n<\/td>\n<td>Arduino Uno ho\u1eb7c t\u01b0\u01a1ng t\u1ef1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>M\u1ea1ch khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u<\/td>\n<td>\u0110\u1ec3 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u nh\u1eadn \u0111\u01b0\u1ee3c<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n tr\u1edf<\/td>\n<td>Kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o m\u1ea1ch<\/td>\n<td>T\u00f9y thu\u1ed9c v\u00e0o m\u1ea1ch<\/td>\n<\/tr>\n<tr>\n<td>T\u1ee5 \u0111i\u1ec7n<\/td>\n<td>Kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o m\u1ea1ch<\/td>\n<td>T\u00f9y thu\u1ed9c v\u00e0o m\u1ea1ch<\/td>\n<\/tr>\n<tr>\n<td>D\u00e2y n\u1ed1i<\/td>\n<td><\/td>\n<td>T\u00f9y thu\u1ed9c v\u00e0o m\u1ea1ch<\/td>\n<\/tr>\n<tr>\n<td>\u1ed0ng nh\u1ef1a PVC<\/td>\n<td>\u0110\u1ec3 l\u00e0m khung b\u1ea3o v\u1ec7<\/td>\n<td>T\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>L\u1eafp r\u00e1p m\u1ea1ch \u0111i\u1ec7n<\/h3>\n<p>Vi\u1ec7c l\u1eafp r\u00e1p m\u1ea1ch \u0111i\u1ec7n y\u00eau c\u1ea7u ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n t\u1eed.  K\u1ebft n\u1ed1i c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i si\u00eau \u00e2m v\u1edbi m\u1ea1ch khu\u1ebfch \u0111\u1ea1i v\u00e0 sau \u0111\u00f3 k\u1ebft n\u1ed1i v\u1edbi vi \u0111i\u1ec1u khi\u1ec3n.  S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n ph\u00f9 h\u1ee3p v\u1edbi linh ki\u1ec7n b\u1ea1n \u0111\u00e3 ch\u1ecdn.  N\u1ebfu c\u1ea7n thi\u1ebft v\u00e0 li\u00ean quan \u0111\u1ebfn hi\u1ec7u n\u0103ng c\u1ee7a c\u1ea3m bi\u1ebfn, c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i si\u00eau \u00e2m t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0 Beijing Ultrasonic \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft.<\/p>\n<h3>L\u1eadp tr\u00ecnh vi \u0111i\u1ec1u khi\u1ec3n<\/h3>\n<p>Vi \u0111i\u1ec1u khi\u1ec3n c\u1ea7n \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n vi\u1ec7c ph\u00e1t v\u00e0 nh\u1eadn s\u00f3ng si\u00eau \u00e2m, t\u00ednh to\u00e1n th\u1eddi gian truy\u1ec1n s\u00f3ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u1ed1c \u0111\u1ed9 v\u00e0 h\u01b0\u1edbng gi\u00f3.  C\u00f3 nhi\u1ec1u th\u01b0 vi\u1ec7n Arduino c\u00f3 s\u1eb5n h\u1ed7 tr\u1ee3 vi\u1ec7c giao ti\u1ebfp v\u1edbi c\u1ea3m bi\u1ebfn si\u00eau \u00e2m.<\/p>\n<h3>Hi\u1ec7u ch\u1ec9nh v\u00e0 ki\u1ec3m tra<\/h3>\n<p>Sau khi l\u1eafp r\u00e1p v\u00e0 l\u1eadp tr\u00ecnh, c\u1ea7n hi\u1ec7u ch\u1ec9nh c\u1ea3m bi\u1ebfn b\u1eb1ng c\u00e1ch so s\u00e1nh k\u1ebft qu\u1ea3 \u0111o v\u1edbi m\u1ed9t c\u1ea3m bi\u1ebfn gi\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n.  \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a c\u1ea3m bi\u1ebfn t\u1ef1 ch\u1ebf.  Ki\u1ec3m tra c\u1ea3m bi\u1ebfn trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n gi\u00f3 kh\u00e1c nhau \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t.<\/p>\n<h3>\u1ee8ng d\u1ee5ng<\/h3>\n<p>C\u1ea3m bi\u1ebfn gi\u00f3 t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb d\u1ef1 \u00e1n khoa h\u1ecdc, theo d\u00f5i th\u1eddi ti\u1ebft t\u1ea1i nh\u00e0, \u0111\u1ebfn \u0111i\u1ec1u khi\u1ec3n h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau t\u1ef1 \u0111\u1ed9ng.<\/p>\n<p>T\u1ef1 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m l\u00e0 m\u1ed9t d\u1ef1 \u00e1n \u0111\u1ea7y th\u1eed th\u00e1ch nh\u01b0ng c\u0169ng r\u1ea5t b\u1ed5 \u00edch.  B\u1eb1ng vi\u1ec7c t\u00ecm hi\u1ec3u v\u00e0 th\u1ef1c hi\u1ec7n, b\u1ea1n kh\u00f4ng ch\u1ec9 c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t thi\u1ebft b\u1ecb h\u1eefu \u00edch m\u00e0 c\u00f2n n\u00e2ng cao ki\u1ebfn th\u1ee9c v\u1ec1 \u0111i\u1ec7n t\u1eed v\u00e0 l\u1eadp tr\u00ecnh.  Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng th\u00f4ng tin c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh kh\u00e1m ph\u00e1 th\u00fa v\u1ecb n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t c\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb cho nh\u1eefng ng\u01b0\u1eddi y\u00eau th\u00edch \u0111i\u1ec7n t\u1eed m\u00e0 c\u00f2n l\u00e0 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111o l\u01b0\u1eddng gi\u00f3. C\u1ea3m bi\u1ebfn gi\u00f3 si\u00eau \u00e2m mang l\u1ea1i nhi\u1ec1u<\/p>\n","protected":false},"author":1,"featured_media":26463,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-51388","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\/51388","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=51388"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/51388\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26463"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=51388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=51388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=51388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}