{"id":49404,"date":"2023-04-21T22:18:35","date_gmt":"2023-04-22T03:18:35","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-fix-ultrasonic-sensor\/"},"modified":"2025-01-21T07:15:58","modified_gmt":"2025-01-21T12:15:58","slug":"how-to-fix-ultrasonic-sensor","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-fix-ultrasonic-sensor\/","title":{"rendered":"Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m"},"content":{"rendered":"

C\u1ea3m bi\u1ebfn si\u00eau \u00e2m l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb \u0111o kho\u1ea3ng c\u00e1ch trong robot \u0111\u1ebfn ph\u00e1t hi\u1ec7n v\u1eadt c\u1ea3n trong xe h\u01a1i. Khi c\u1ea3m bi\u1ebfn si\u00eau \u00e2m g\u1eb7p s\u1ef1 c\u1ed1, vi\u1ec7c x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n v\u00e0 s\u1eeda ch\u1eefa nhanh ch\u00f3ng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p v\u1edbi c\u1ea3m bi\u1ebfn si\u00eau \u00e2m, gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c.<\/p>\n

Ki\u1ec3m tra ngu\u1ed3n \u0111i\u1ec7n<\/h3>\n

B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 ki\u1ec3m tra ngu\u1ed3n \u0111i\u1ec7n c\u1ea5p cho c\u1ea3m bi\u1ebfn. H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111i\u1ec7n \u00e1p cung c\u1ea5p \u0111\u00fang theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t. S\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng \u0111\u1ec3 \u0111o \u0111i\u1ec7n \u00e1p \u1edf ch\u00e2n VCC v\u00e0 GND c\u1ee7a c\u1ea3m bi\u1ebfn. N\u1ebfu \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u00fang, h\u00e3y ki\u1ec3m tra l\u1ea1i ngu\u1ed3n \u0111i\u1ec7n v\u00e0 d\u00e2y k\u1ebft n\u1ed1i.<\/p>\n

Ki\u1ec3m tra d\u00e2y k\u1ebft n\u1ed1i<\/h3>\n

D\u00e2y k\u1ebft n\u1ed1i l\u1ecfng l\u1ebbo ho\u1eb7c b\u1ecb \u0111\u1ee9t c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn. Ki\u1ec3m tra k\u1ef9 t\u1ea5t c\u1ea3 c\u00e1c d\u00e2y k\u1ebft n\u1ed1i gi\u1eefa c\u1ea3m bi\u1ebfn v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n. \u0110\u1ea3m b\u1ea3o ch\u00fang \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn v\u00e0 kh\u00f4ng b\u1ecb h\u1ecfng. N\u1ebfu ph\u00e1t hi\u1ec7n d\u00e2y b\u1ecb \u0111\u1ee9t, h\u00e3y thay th\u1ebf b\u1eb1ng d\u00e2y m\u1edbi.<\/p>\n

Ki\u1ec3m tra v\u1eadt c\u1ea3n<\/h3>\n

\u0110\u00f4i khi, v\u1eadt c\u1ea3n n\u1eb1m qu\u00e1 g\u1ea7n ho\u1eb7c qu\u00e1 xa ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1. H\u00e3y tham kh\u1ea3o b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t s\u1ed1 lo\u1ea1i c\u1ea3m bi\u1ebfn si\u00eau \u00e2m ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n\n\n\n\n
Lo\u1ea1i c\u1ea3m bi\u1ebfn<\/th>\nPh\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng (cm)<\/th>\n<\/tr>\n<\/thead>\n
C\u1ea3m bi\u1ebfn nh\u1ecf<\/td>\n2 – 400<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn trung b\u00ecnh<\/td>\n5 – 500<\/td>\n<\/tr>\n
C\u1ea3m bi\u1ebfn l\u1edbn<\/td>\n10 – 700<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u1eadt c\u1ea3n n\u1eb1m trong ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn. N\u1ebfu v\u1eadt c\u1ea3n qu\u00e1 g\u1ea7n, h\u00e3y t\u0103ng kho\u1ea3ng c\u00e1ch. N\u1ebfu v\u1eadt c\u1ea3n qu\u00e1 xa, h\u00e3y xem x\u00e9t s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn c\u00f3 ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng r\u1ed9ng h\u01a1n.<\/p>\n

Ki\u1ec3m tra m\u00f4i tr\u01b0\u1eddng<\/h3>\n

M\u00f4i tr\u01b0\u1eddng xung quanh c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m. Nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m v\u00e0 \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra sai s\u1ed1 trong ph\u00e9p \u0111o. N\u1ebfu c\u1ea3m bi\u1ebfn ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, h\u00e3y xem x\u00e9t s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho m\u00f4i tr\u01b0\u1eddng \u0111\u00f3.<\/p>\n

Ki\u1ec3m tra ph\u1ea7n c\u1ee9ng c\u1ee7a c\u1ea3m bi\u1ebfn<\/h3>\n

N\u1ebfu \u0111\u00e3 ki\u1ec3m tra t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc tr\u00ean m\u00e0 v\u1eabn ch\u01b0a t\u00ecm ra nguy\u00ean nh\u00e2n, c\u00f3 th\u1ec3 ph\u1ea7n c\u1ee9ng c\u1ee7a c\u1ea3m bi\u1ebfn \u0111\u00e3 b\u1ecb h\u1ecfng. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i thay th\u1ebf c\u1ea3m bi\u1ebfn m\u1edbi.<\/p>\n

Ki\u1ec3m tra code ch\u01b0\u01a1ng tr\u00ecnh<\/h3>\n

N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn si\u00eau \u00e2m trong m\u1ed9t d\u1ef1 \u00e1n l\u1eadp tr\u00ecnh, h\u00e3y ki\u1ec3m tra l\u1ea1i code ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n. \u0110\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n \u0111\u00e3 c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1c ch\u00e2n v\u00e0 s\u1eed d\u1ee5ng \u0111\u00fang th\u01b0 vi\u1ec7n.<\/p>\n

Vi\u1ec7c s\u1eeda ch\u1eefa c\u1ea3m bi\u1ebfn si\u00eau \u00e2m kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng ph\u1ee9c t\u1ea1p. B\u1eb1ng c\u00e1ch ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng c\u00e1c b\u01b0\u1edbc \u0111\u00e3 n\u00eau tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n s\u1ef1 c\u1ed1 v\u00e0 \u0111\u01b0a ra gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u1edbi c\u1ea3m bi\u1ebfn si\u00eau \u00e2m m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u1ea3m bi\u1ebfn si\u00eau \u00e2m l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb \u0111o kho\u1ea3ng c\u00e1ch trong robot \u0111\u1ebfn ph\u00e1t hi\u1ec7n v\u1eadt c\u1ea3n trong xe h\u01a1i. Khi c\u1ea3m bi\u1ebfn si\u00eau \u00e2m g\u1eb7p s\u1ef1 c\u1ed1, vi\u1ec7c x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n v\u00e0 s\u1eeda ch\u1eefa nhanh ch\u00f3ng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng<\/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-49404","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\/49404","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=49404"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/49404\/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=49404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=49404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=49404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}