{"id":45140,"date":"2023-04-22T03:02:58","date_gmt":"2023-04-22T08:02:58","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-increase-the-range-of-ultrasonic-sensor\/"},"modified":"2025-01-21T07:16:34","modified_gmt":"2025-01-21T12:16:34","slug":"how-to-increase-the-range-of-ultrasonic-sensor","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-increase-the-range-of-ultrasonic-sensor\/","title":{"rendered":"M\u1edf R\u1ed9ng T\u1ea7m Ph\u00e1t Hi\u1ec7n C\u1ee7a C\u1ea3m Bi\u1ebfn Si\u00eau \u00c2m"},"content":{"rendered":"

C\u1ea3m bi\u1ebfn si\u00eau \u00e2m l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch 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. Tuy nhi\u00ean, ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn n\u00e0y th\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd t\u1eadp trung v\u00e0o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 t\u0103ng ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m, gi\u00fap b\u1ea1n khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y.<\/p>\n

T\u0103ng C\u00f4ng Su\u1ea5t Ph\u00e1t<\/h3>\n

M\u1ed9t trong nh\u1eefng c\u00e1ch tr\u1ef1c ti\u1ebfp nh\u1ea5t \u0111\u1ec3 t\u0103ng ph\u1ea1m vi c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m l\u00e0 t\u0103ng c\u00f4ng su\u1ea5t ph\u00e1t c\u1ee7a n\u00f3. C\u00f4ng su\u1ea5t ph\u00e1t c\u00e0ng cao, t\u00edn hi\u1ec7u si\u00eau \u00e2m c\u00e0ng m\u1ea1nh, cho ph\u00e9p n\u00f3 \u0111i xa h\u01a1n tr\u01b0\u1edbc khi b\u1ecb suy y\u1ebfu \u0111\u1ebfn m\u1ee9c kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng vi\u1ec7c t\u0103ng c\u00f4ng su\u1ea5t ph\u00e1t c\u0169ng c\u00f3 th\u1ec3 t\u0103ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00f3 th\u1ec3 g\u00e2y nhi\u1ec5u cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00e1c.<\/p>\n

S\u1eed D\u1ee5ng T\u1ea7n S\u1ed1 Th\u1ea5p H\u01a1n<\/h3>\n

T\u1ea7n s\u1ed1 c\u1ee7a s\u00f3ng si\u00eau \u00e2m c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn. S\u00f3ng si\u00eau \u00e2m t\u1ea7n s\u1ed1 th\u1ea5p b\u1ecb suy gi\u1ea3m \u00edt h\u01a1n trong kh\u00f4ng kh\u00ed so v\u1edbi s\u00f3ng t\u1ea7n s\u1ed1 cao. Do \u0111\u00f3, s\u1eed d\u1ee5ng t\u1ea7n s\u1ed1 th\u1ea5p h\u01a1n c\u00f3 th\u1ec3 gi\u00fap t\u0103ng ph\u1ea1m vi ph\u00e1t hi\u1ec7n. Tuy nhi\u00ean, t\u1ea7n s\u1ed1 th\u1ea5p h\u01a1n c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p h\u01a1n, ngh\u0129a l\u00e0 c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 kh\u00f3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c v\u1eadt th\u1ec3 g\u1ea7n nhau.<\/p>\n\n\n\n\n\n\n\n
T\u1ea7n s\u1ed1 (kHz)<\/th>\nPh\u1ea1m vi (m)<\/th>\n\u0110\u1ed9 ph\u00e2n gi\u1ea3i<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\nCao<\/td>\nTh\u1ea5p<\/td>\n<\/tr>\n
100<\/td>\nTrung b\u00ecnh<\/td>\nTrung b\u00ecnh<\/td>\n<\/tr>\n
200<\/td>\nTh\u1ea5p<\/td>\nCao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1ed1i \u01afu H\u00f3a B\u1ed9 Thu<\/h3>\n

Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a b\u1ed9 thu c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u0103ng ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m. M\u1ed9t b\u1ed9 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3 v\u1edbi \u0111\u1ed9 nhi\u1ec5u th\u1ea5p c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu ph\u1ea3n x\u1ea1 t\u1eeb xa. Vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 l\u1ecdc ph\u00f9 h\u1ee3p c\u0169ng gi\u00fap lo\u1ea1i b\u1ecf nhi\u1ec5u v\u00e0 t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o.<\/p>\n

S\u1eed D\u1ee5ng K\u1ef9 Thu\u1eadt X\u1eed L\u00fd T\u00edn Hi\u1ec7u<\/h3>\n

C\u00e1c k\u1ef9 thu\u1eadt x\u1eed l\u00fd t\u00edn hi\u1ec7u ti\u00ean ti\u1ebfn, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1ecdc Kalman v\u00e0 trung b\u00ecnh t\u00edn hi\u1ec7u, c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n t\u1ef7 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap m\u1edf r\u1ed9ng ph\u1ea1m vi hi\u1ec7u qu\u1ea3 c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m.<\/p>\n

Thi\u1ebft K\u1ebf \u0110\u1ea7u D\u00f2 Ph\u00f9 H\u1ee3p<\/h3>\n

H\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng. \u0110\u1ea7u d\u00f2 l\u1edbn h\u01a1n c\u00f3 th\u1ec3 ph\u00e1t ra s\u00f3ng si\u00eau \u00e2m m\u1ea1nh h\u01a1n, trong khi \u0111\u1ea7u d\u00f2 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t c\u00f3 th\u1ec3 t\u1eadp trung ch\u00f9m tia si\u00eau \u00e2m, gi\u00fap t\u0103ng ph\u1ea1m vi v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n

M\u00f4i Tr\u01b0\u1eddng Ho\u1ea1t \u0110\u1ed9ng<\/h3>\n

M\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn ph\u1ea1m vi 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 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n c\u1ee7a s\u00f3ng si\u00eau \u00e2m. C\u00e1c v\u1eadt c\u1ea3n v\u00e0 nhi\u1ec5u \u00e2m thanh trong m\u00f4i tr\u01b0\u1eddng c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m ph\u1ea1m vi ph\u00e1t hi\u1ec7n. C\u1ea7n xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng n\u00e0y khi thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai h\u1ec7 th\u1ed1ng c\u1ea3m bi\u1ebfn si\u00eau \u00e2m.<\/p>\n

T\u00f3m l\u1ea1i, vi\u1ec7c t\u0103ng ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a nhi\u1ec1u y\u1ebfu t\u1ed1, t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn linh ki\u1ec7n ph\u00f9 h\u1ee3p \u0111\u1ebfn vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea1m vi v\u00e0 \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea3m bi\u1ebfn si\u00eau \u00e2m trong \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u1ea3m bi\u1ebfn si\u00eau \u00e2m l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch 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. Tuy nhi\u00ean, ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn n\u00e0y th\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd t\u1eadp trung v\u00e0o c\u00e1c<\/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-45140","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\/45140","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=45140"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/45140\/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=45140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=45140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=45140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}