{"id":9364,"date":"2026-09-09T16:08:30","date_gmt":"2026-09-09T08:08:30","guid":{"rendered":"https:\/\/www.yantaisensor.com\/?p=9364"},"modified":"2026-09-09T17:39:42","modified_gmt":"2026-09-09T09:39:42","slug":"outdoor-noise-sensor-smart-city","status":"publish","type":"post","link":"https:\/\/www.yantaisensor.com\/vi\/blog\/outdoor-noise-sensor-smart-city","title":{"rendered":"C\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n ngo\u00e0i tr\u1eddi cho Th\u00e0nh ph\u1ed1 th\u00f4ng minh: \u1ee8ng d\u1ee5ng & L\u1ee3i \u00edch"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n

\u0110\u1ed1i v\u1edbi ch\u00ednh quy\u1ec1n \u0111\u00f4 th\u1ecb, \u0111\u01a1n v\u1ecb v\u1eadn h\u00e0nh \u0111\u01b0\u1eddng b\u1ed9 v\u00e0 nh\u00e0 th\u1ea7u gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng, ti\u1ebfng \u1ed3n giao th\u00f4ng kh\u00f3 c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c b\u1eb1ng c\u00e1c ph\u00e9p \u0111o ng\u1eabu nhi\u00ean. M\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n thay \u0111\u1ed5i theo l\u01b0u l\u01b0\u1ee3ng giao th\u00f4ng, lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n, gi\u1edd cao \u0111i\u1ec3m, \u0111i\u1ec1u ki\u1ec7n m\u1eb7t \u0111\u01b0\u1eddng v\u00e0 m\u00f4i tr\u01b0\u1eddng xung quanh. C\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9<\/mark><\/a> cung c\u1ea5p d\u1eef li\u1ec7u m\u1ee9c \u00e2m thanh li\u00ean t\u1ee5c t\u1eeb \u0111\u01b0\u1eddng b\u1ed9, giao l\u1ed9 v\u00e0 \u0111\u01b0\u1eddng cao t\u1ed1c, gi\u00fap c\u00e1c \u0111\u1ed9i d\u1ef1 \u00e1n hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng thay \u0111\u1ed5i n\u00e0y theo th\u1eddi gian.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n th\u00e0nh ph\u1ed1 th\u00f4ng minh, d\u1eef li\u1ec7u n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n v\u00e0 n\u1ec1n t\u1ea3ng gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 t\u1eadp trung h\u00f3a vi\u1ec7c gi\u00e1m s\u00e1t v\u00e0 ph\u00e2n t\u00edch. Nh\u01b0ng c\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n ngo\u00e0i tr\u1eddi n\u00ean \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t nh\u01b0 th\u1ebf n\u00e0o, nh\u1eefng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0o quan tr\u1ecdng v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 n\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong \u0111i\u1ec1u ki\u1ec7n ngo\u00e0i tr\u1eddi thay \u0111\u1ed5i? C\u00e1c ph\u1ea7n sau \u0111\u00e2y s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c c\u00e2n nh\u1eafc khi l\u1ef1a ch\u1ecdn. B\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 H\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n giao th\u00f4ng: C\u00e1c th\u00e0nh ph\u1ea7n, Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee8ng d\u1ee5ng?<\/mark><\/a> Nh\u1ea5p v\u00e0o \u0111\u00e2y \u0111\u1ec3 t\u00ecm hi\u1ec3u.<\/p>\n\n\n\n

\n
\"Microphone<\/figure>\n\n\n\n
\"Microphone<\/figure>\n<\/figure>\n\n\n\n

T\u1ea1i sao Gi\u00e1m s\u00e1t Ti\u1ebfng \u1ed3n \u0110\u01b0\u1eddng b\u1ed9 l\u1ea1i Quan tr\u1ecdng trong Th\u00e0nh ph\u1ed1 Th\u00f4ng minh?<\/h2>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n th\u00e0nh ph\u1ed1 th\u00f4ng minh, gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9 <\/mark><\/a>kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u0111o m\u1ee9c \u00e2m thanh. N\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u m\u00f4i tr\u01b0\u1eddng li\u00ean t\u1ee5c gi\u00fap c\u00e1c \u0111\u1ed9i d\u1ef1 \u00e1n hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c m\u00f4 h\u00ecnh ti\u1ebfng \u1ed3n giao th\u00f4ng, \u0111\u00e1nh gi\u00e1 c\u00e1c v\u1ecb tr\u00ed gi\u00e1m s\u00e1t v\u00e0 h\u1ed7 tr\u1ee3 c\u00e1c quy\u1ebft \u0111\u1ecbnh qu\u1ea3n l\u00fd \u0111\u00f4 th\u1ecb th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

Giao th\u00f4ng \u0110\u01b0\u1eddng b\u1ed9 T\u1ea1o ra Ti\u1ebfng \u1ed3n Thay \u0111\u1ed5i Li\u00ean t\u1ee5c<\/h3>\n\n\n\n

Ti\u1ebfng \u1ed3n giao th\u00f4ng \u0111\u01b0\u1eddng b\u1ed9 l\u00e0 \u0111\u1ed9ng, kh\u00f4ng t\u0129nh. Giao th\u00f4ng cao \u0111i\u1ec3m, xe t\u1ea3i n\u1eb7ng, t\u0103ng t\u1ed1c v\u00e0 phanh g\u1ea5p, xe m\u00e1y v\u00e0 c\u00e1c giao l\u1ed9 \u0111\u00f4ng \u0111\u00fac \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 gia t\u0103ng ng\u1eafn h\u1ea1n v\u1ec1 m\u1ee9c \u00e2m thanh. Giao th\u00f4ng ban \u0111\u00eam c\u00f3 th\u1ec3 t\u1ea1o ra m\u00f4 h\u00ecnh ti\u1ebfng \u1ed3n kh\u00e1c v\u1edbi \u0111i\u1ec1u ki\u1ec7n ban ng\u00e0y. C\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9 cho ph\u00e9p theo d\u00f5i li\u00ean t\u1ee5c nh\u1eefng thay \u0111\u1ed5i n\u00e0y thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o c\u00e1c ph\u00e9p \u0111o \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m duy nh\u1ea5t.<\/p>\n\n\n\n

C\u00e1c Ph\u00e9p \u0111o \u0110\u1ecbnh k\u1ef3 Kh\u00f4ng th\u1ec3 Hi\u1ec3n th\u1ecb c\u00e1c M\u00f4 h\u00ecnh Ti\u1ebfng \u1ed3n D\u00e0i h\u1ea1n<\/h3>\n\n\n\n

M\u1ed9t ph\u00e9p \u0111o \u0111\u01a1n l\u1ebb c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb m\u1ee9c ti\u1ebfng \u1ed3n t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3, nh\u01b0ng kh\u00f4ng th\u1ec3 gi\u1ea3i th\u00edch m\u00f4i tr\u01b0\u1eddng \u00e2m thanh thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o trong su\u1ed1t c\u1ea3 ng\u00e0y ho\u1eb7c qua c\u00e1c m\u00f9a kh\u00e1c nhau. Gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n m\u00f4i tr\u01b0\u1eddng li\u00ean t\u1ee5c c\u00f3 th\u1ec3 ti\u1ebft l\u1ed9 c\u00e1c m\u00f4 h\u00ecnh h\u00e0ng ng\u00e0y, thay \u0111\u1ed5i gi\u1edd cao \u0111i\u1ec3m, bi\u1ebfn \u0111\u1ed9ng ban \u0111\u00eam v\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n ti\u1ebfng \u1ed3n b\u1ea5t th\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p cho c\u00e1c \u0111\u1ed9i d\u1ef1 \u00e1n m\u1ed9t b\u1ed9 d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady h\u01a1n \u0111\u1ec3 so s\u00e1nh c\u00e1c v\u1ecb tr\u00ed, x\u00e1c \u0111\u1ecbnh xu h\u01b0\u1edbng v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c thay \u0111\u1ed5i theo th\u1eddi gian.<\/p>\n\n\n\n

D\u1eef li\u1ec7u Ti\u1ebfng \u1ed3n H\u1ed7 tr\u1ee3 Nhi\u1ec1u h\u01a1n Ch\u1ec9 Tu\u00e2n th\u1ee7<\/h3>\n\n\n\n

D\u1eef li\u1ec7u gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 nhi\u1ec1u quy\u1ebft \u0111\u1ecbnh th\u00e0nh ph\u1ed1 th\u00f4ng minh h\u01a1n. C\u01a1 quan qu\u1ea3n l\u00fd giao th\u00f4ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng xu h\u01b0\u1edbng ti\u1ebfng \u1ed3n d\u00e0i h\u1ea1n c\u00f9ng v\u1edbi d\u1eef li\u1ec7u giao th\u00f4ng khi \u0111\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1eddng b\u1ed9 ho\u1eb7c l\u1eadp k\u1ebf ho\u1ea1ch c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng. Nh\u00e0 quy ho\u1ea1ch \u0111\u00f4 th\u1ecb c\u00f3 th\u1ec3 xem x\u00e9t m\u1ee9c \u0111\u1ed9 ph\u01a1i nhi\u1ec5m ti\u1ebfng \u1ed3n khi \u0111\u00e1nh gi\u00e1 c\u00e1c khu d\u00e2n c\u01b0 v\u00e0 th\u01b0\u01a1ng m\u1ea1i, trong khi c\u00e1c \u0111\u1ed9i x\u00e2y d\u1ef1ng c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n trong c\u00e1c d\u1ef1 \u00e1n c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng l\u1edbn. Theo c\u00e1ch n\u00e0y, gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n c\u1ee7a qu\u1ea3n l\u00fd m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u00f4 th\u1ecb r\u1ed9ng l\u1edbn h\u01a1n thay v\u00ec ch\u1ec9 l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 tu\u00e2n th\u1ee7 \u0111\u1ed9c l\u1eadp.<\/p>\n\n\n\n

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\"Th\u00e0nh<\/figure>\n\n\n\n
\"Th\u00e0nh<\/figure>\n<\/figure>\n\n\n\n

C\u1ea3m bi\u1ebfn Ti\u1ebfng \u1ed3n Ngo\u00e0i tr\u1eddi Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n

C\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n ngo\u00e0i tr\u1eddi ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i \u00e1p su\u1ea5t \u00e2m thanh th\u00f4ng qua m\u1ed9t micro nh\u1ea1y c\u1ea3m v\u00e0 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u00e2m thanh th\u00e0nh d\u1eef li\u1ec7u m\u1ee9c \u00e2m thanh k\u1ef9 thu\u1eadt s\u1ed1, th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng decibel (dB). T\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng tr\u1ecdng s\u1ed1 t\u1ea7n s\u1ed1 nh\u01b0 tr\u1ecdng s\u1ed1 A<\/mark><\/a> v\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ebfn n\u1ec1n t\u1ea3ng gi\u00e1m s\u00e1t th\u00f4ng qua c\u00e1c giao di\u1ec7n nh\u01b0 RS485.<\/p>\n\n\n\n

T\u1eeb Ph\u00e1t hi\u1ec7n \u00c2m thanh \u0111\u1ebfn D\u1eef li\u1ec7u K\u1ef9 thu\u1eadt s\u1ed1<\/h3>\n\n\n\n

Quy tr\u00ecnh \u0111o c\u01a1 b\u1ea3n l\u00e0:<\/p>\n\n\n\n

\u00c1p su\u1ea5t \u00c2m thanh \u2192 Micro \u2192 X\u1eed l\u00fd T\u00edn hi\u1ec7u \u2192 Tr\u1ecdng s\u1ed1 T\u1ea7n s\u1ed1 \u2192 D\u1eef li\u1ec7u dB \u2192 N\u1ec1n t\u1ea3ng Gi\u00e1m s\u00e1t<\/strong><\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ngo\u00e0i tr\u1eddi, micro v\u00e0 m\u1ea1ch x\u1eed l\u00fd \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng thay \u0111\u1ed5i \u0111\u1ec3 h\u1ed7 tr\u1ee3 \u0111o l\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i. V\u1edbi RS485\/Modbus-RTU, d\u1eef li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi PLC, thi\u1ebft b\u1ecb thu th\u1eadp d\u1eef li\u1ec7u ho\u1eb7c n\u1ec1n t\u1ea3ng gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n

V\u00ed d\u1ee5, RY-CZS\/485 cung c\u1ea5p d\u1ea3i \u0111o 30\u2013130 dB, \u0111\u1ed9 ch\u00ednh x\u00e1c \u00b11,5 dB \u1edf 23 \u00b1 5\u00b0C v\u00e0 d\u1ea3i t\u1ea7n s\u1ed1 31,5 Hz\u201312,5 kHz, ph\u00f9 h\u1ee3p cho gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n li\u00ean t\u1ee5c ven \u0111\u01b0\u1eddng, x\u00e2y d\u1ef1ng, c\u00f4ng nghi\u1ec7p v\u00e0 th\u00e0nh ph\u1ed1 th\u00f4ng minh.<\/p>\n\n\n\n

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\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n<\/figure>\n\n\n\n

C\u1ea3m bi\u1ebfn Ti\u1ebfng \u1ed3n \u0110\u01b0\u1eddng b\u1ed9 \u0111\u01b0\u1ee3c S\u1eed d\u1ee5ng \u1edf \u0111\u00e2u?<\/h2>\n\n\n\n

C\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nh\u1eefng n\u01a1i c\u1ea7n gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n li\u00ean quan \u0111\u1ebfn giao th\u00f4ng m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c theo th\u1eddi gian. Vi\u1ec7c tri\u1ec3n khai c\u00f3 th\u1ec3 tr\u1ea3i d\u00e0i t\u1eeb c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng \u0111\u00f4 th\u1ecb \u0111\u00f4ng \u0111\u00fac v\u00e0 h\u00e0nh lang \u0111\u01b0\u1eddng cao t\u1ed1c \u0111\u1ebfn c\u00e1c khu v\u1ef1c x\u00e2y d\u1ef1ng, khu c\u00f4ng nghi\u1ec7p v\u00e0 \u0111\u1ea7u m\u1ed1i giao th\u00f4ng. M\u1ee5c ti\u00eau gi\u00e1m s\u00e1t kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 thu \u0111\u01b0\u1ee3c m\u1ed9t ch\u1ec9 s\u1ed1 decibel duy nh\u1ea5t m\u00e0 l\u00e0 x\u00e2y d\u1ef1ng m\u1ed9t b\u1ee9c tranh h\u1eefu \u00edch h\u01a1n v\u1ec1 c\u00e1ch ti\u1ebfng \u1ed3n thay \u0111\u1ed5i theo v\u1ecb tr\u00ed, kho\u1ea3ng th\u1eddi gian v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t Ti\u1ebfng \u1ed3n Ven \u0111\u01b0\u1eddng v\u00e0 \u0110\u00f4 th\u1ecb<\/h3>\n\n\n\n

Ti\u1ebfng \u1ed3n giao th\u00f4ng trong c\u00e1c th\u00e0nh ph\u1ed1 c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 gi\u1eefa gi\u1edd cao \u0111i\u1ec3m, gi\u1edd th\u1ea5p \u0111i\u1ec3m v\u00e0 ban \u0111\u00eam. C\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t g\u1ea7n c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng \u0111\u00f4 th\u1ecb, giao l\u1ed9, \u0111\u01b0\u1eddng tr\u1ee5c ho\u1eb7c \u0111\u01b0\u1eddng khu d\u00e2n c\u01b0 c\u00f3 th\u1ec3 li\u00ean t\u1ee5c ghi l\u1ea1i nh\u1eefng thay \u0111\u1ed5i n\u00e0y v\u00e0 ti\u1ebft l\u1ed9 c\u00e1c m\u00f4 h\u00ecnh m\u00e0 c\u00e1c ph\u00e9p \u0111o ng\u1eabu nhi\u00ean c\u00f3 th\u1ec3 b\u1ecf s\u00f3t.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n th\u00e0nh ph\u1ed1 th\u00f4ng minh, c\u00e1c \u0111i\u1ec3m gi\u00e1m s\u00e1t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn xung quanh c\u00e1c h\u00e0nh lang giao th\u00f4ng cao ho\u1eb7c c\u00e1c khu v\u1ef1c nh\u1ea1y c\u1ea3m v\u1edbi ti\u1ebfng \u1ed3n. D\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c gi\u00fap so s\u00e1nh c\u00e1c \u0111o\u1ea1n \u0111\u01b0\u1eddng kh\u00e1c nhau, x\u00e1c \u0111\u1ecbnh c\u00e1c kho\u1ea3ng th\u1eddi gian ti\u1ebfng \u1ed3n cao t\u00e1i di\u1ec5n v\u00e0 cung c\u1ea5p th\u00f4ng tin h\u1ed7 tr\u1ee3 cho qu\u1ea3n l\u00fd m\u00f4i tr\u01b0\u1eddng c\u0169ng nh\u01b0 quy ho\u1ea1ch giao th\u00f4ng ho\u1eb7c c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t Ti\u1ebfng \u1ed3n \u0110\u01b0\u1eddng cao t\u1ed1c v\u00e0 \u0110\u01b0\u1eddng cao t\u1ed1c<\/h3>\n\n\n\n

D\u1ecdc theo \u0111\u01b0\u1eddng cao t\u1ed1c v\u00e0 \u0111\u01b0\u1eddng cao t\u1ed1c, v\u1ecb tr\u00ed tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a vi\u1ec7c gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n. C\u00e1c khu d\u00e2n c\u01b0, c\u01a1 s\u1edf ven \u0111\u01b0\u1eddng, n\u00fat giao th\u00f4ng v\u00e0 c\u00e1c khu v\u1ef1c nh\u1ea1y c\u1ea3m kh\u00e1c c\u00f3 th\u1ec3 ch\u1ecbu m\u1ee9c \u0111\u1ed9 ph\u01a1i nhi\u1ec5m ti\u1ebfng \u1ed3n kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch v\u00e0 v\u1ecb tr\u00ed c\u1ee7a ch\u00fang so v\u1edbi h\u00e0nh lang giao th\u00f4ng.<\/p>\n\n\n\n

Do \u0111\u00f3, c\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n ngo\u00e0i tr\u1eddi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 t\u1ea1i nhi\u1ec1u \u0111i\u1ec3m \u0111\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t m\u1ea1ng l\u01b0\u1edbi gi\u00e1m s\u00e1t d\u00e0i h\u1ea1n. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y h\u1eefu \u00edch cho c\u00e1c d\u1ef1 \u00e1n m\u1edf r\u1ed9ng \u0111\u01b0\u1eddng cao t\u1ed1c, \u0111\u00e1nh gi\u00e1 t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c bi\u1ec7n ph\u00e1p nh\u01b0 r\u00e0o ch\u1eafn ti\u1ebfng \u1ed3n ho\u1eb7c c\u00e1c gi\u1ea3i ph\u00e1p gi\u1ea3m thi\u1ec3u kh\u00e1c.<\/p>\n\n\n\n

C\u00e1c D\u1ef1 \u00e1n X\u00e2y d\u1ef1ng v\u00e0 C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/h3>\n\n\n\n

Ti\u1ebfng \u1ed3n x\u00e2y d\u1ef1ng ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o c\u00f4ng vi\u1ec7c \u0111ang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf m\u1ed9t giai \u0111o\u1ea1n c\u1ee5 th\u1ec3. \u0110\u00e0o \u0111\u01b0\u1eddng, x\u00e2y c\u1ea7u, \u0111\u00f3ng c\u1ecdc, ph\u00e1 d\u1ee1 v\u00e0 thi c\u00f4ng t\u00e0u \u0111i\u1ec7n ng\u1ea7m \u0111\u1ec1u c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u00e2m thanh kh\u00e1c nhau.<\/p>\n\n\n\n

Thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n li\u00ean t\u1ee5c cung c\u1ea5p cho nh\u00e0 th\u1ea7u v\u00e0 ng\u01b0\u1eddi qu\u1ea3n l\u00fd d\u1ef1 \u00e1n h\u1ed3 s\u01a1 r\u00f5 r\u00e0ng h\u01a1n v\u1ec1 nh\u1eefng thay \u0111\u1ed5i n\u00e0y so v\u1edbi c\u00e1c ph\u00e9p \u0111o th\u1ee7 c\u00f4ng ri\u00eang l\u1ebb. D\u1eef li\u1ec7u t\u1eeb c\u00e1c \u0111i\u1ec3m gi\u00e1m s\u00e1t quanh ranh gi\u1edbi c\u00f4ng tr\u01b0\u1eddng c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c giai \u0111o\u1ea1n ti\u1ebfng \u1ed3n t\u0103ng cao, \u0111\u00e1nh gi\u00e1 c\u00e1c t\u00e1c \u0111\u1ed9ng ti\u1ec1m \u1ea9n \u0111\u1ebfn c\u00e1c khu v\u1ef1c nh\u1ea1y c\u1ea3m l\u00e2n c\u1eadn, \u0111\u1ed3ng th\u1eddi h\u1ed7 tr\u1ee3 qu\u1ea3n l\u00fd m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00f2ng \u0111\u1eddi d\u1ef1 \u00e1n.<\/p>\n\n\n\n

Khu c\u00f4ng nghi\u1ec7p v\u00e0 \u0110\u1ea7u m\u1ed1i giao th\u00f4ng<\/h3>\n\n\n\n

C\u00e1c khu c\u00f4ng nghi\u1ec7p v\u00e0 \u0111\u1ea7u m\u1ed1i giao th\u00f4ng t\u1ea1o ra m\u00f4i tr\u01b0\u1eddng gi\u00e1m s\u00e1t ph\u1ee9c t\u1ea1p h\u01a1n v\u00ec giao th\u00f4ng \u0111\u01b0\u1eddng b\u1ed9 th\u01b0\u1eddng ch\u1ec9 l\u00e0 m\u1ed9t trong nhi\u1ec1u ngu\u1ed3n ti\u1ebfng \u1ed3n. Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n c\u00f3 th\u1ec3 ch\u1ed3ng l\u1ea5n v\u1edbi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nh\u00e0 m\u00e1y, ho\u1ea1t \u0111\u1ed9ng b\u1ed1c x\u1ebfp, giao th\u00f4ng \u0111\u01b0\u1eddng s\u1eaft, ho\u1ea1t \u0111\u1ed9ng h\u00e0ng kh\u00f4ng ho\u1eb7c logistics c\u1ea3ng bi\u1ec3n.<\/p>\n\n\n\n

T\u1ea1i c\u00e1c v\u1ecb tr\u00ed n\u00e0y, c\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n ngo\u00e0i tr\u1eddi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai t\u1ea1i c\u00e1c \u0111i\u1ec3m \u0111\u00e3 ch\u1ecdn \u0111\u1ec3 gi\u00e1m s\u00e1t s\u1ef1 thay \u0111\u1ed5i m\u1ee9c \u00e2m thanh t\u1ed5ng th\u1ec3 v\u00e0 cung c\u1ea5p d\u1eef li\u1ec7u li\u00ean t\u1ee5c \u0111\u1ebfn m\u1ed9t n\u1ec1n t\u1ea3ng m\u00f4i tr\u01b0\u1eddng t\u1eadp trung. Khi k\u1ebft h\u1ee3p v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 m\u00f4i tr\u01b0\u1eddng kh\u00e1c, d\u1eef li\u1ec7u c\u00f3 th\u1ec3 mang l\u1ea1i cho c\u00e1c nh\u00f3m d\u1ef1 \u00e1n c\u00e1i nh\u00ecn r\u1ed9ng h\u01a1n v\u1ec1 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \u0111\u1ecba ph\u01b0\u01a1ng thay v\u00ec coi ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9 l\u00e0 m\u1ed9t ph\u00e9p \u0111o ri\u00eang l\u1ebb.<\/p>\n\n\n\n

\n
\"An<\/figure>\n\n\n\n
\"c\u1ea3m<\/figure>\n\n\n\n
\"c\u1ea3m<\/figure>\n<\/figure>\n\n\n\n

Thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n c\u00f3 th\u1ec3 cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec?<\/h2>\n\n\n\n

Thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t ti\u1ebfng \u1ed3n cung c\u1ea5p nhi\u1ec1u h\u01a1n ch\u1ec9 s\u1ed1 \u0111\u1ecdc decibel theo th\u1eddi gian th\u1ef1c. D\u1eef li\u1ec7u thu th\u1eadp b\u1edfi c\u1ea3m bi\u1ebfn ti\u1ebfng \u1ed3n \u0111\u01b0\u1eddng b\u1ed9 c\u00f3 th\u1ec3 cho th\u1ea5y m\u1ee9c \u00e2m thanh thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o theo th\u1eddi gian v\u00e0 cung c\u1ea5p h\u1ed3 s\u01a1 \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 m\u00f4i tr\u01b0\u1eddng \u00e2m thanh. T\u00f9y thu\u1ed9c v\u00e0o c\u1ea3m bi\u1ebfn v\u00e0 h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t, c\u00e1c ph\u00e9p \u0111o c\u00f3 th\u1ec3 bao g\u1ed3m m\u1ee9c \u00e1p su\u1ea5t \u00e2m thanh, m\u1ee9c \u00e2m thanh gia quy\u1ec1n A, thay \u0111\u1ed5i theo th\u1eddi gian, v\u01b0\u1ee3t ng\u01b0\u1ee1ng v\u00e0 h\u1ed3 s\u01a1 l\u1ecbch s\u1eed. Nh\u1eefng d\u1eef li\u1ec7u n\u00e0y gi\u00fap ng\u01b0\u1eddi d\u00f9ng hi\u1ec3u li\u1ec7u \u0111i\u1ec1u ki\u1ec7n ti\u1ebfng \u1ed3n c\u00f3 \u1ed5n \u0111\u1ecbnh hay c\u00f3 nh\u1eefng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3, trong khi vi\u1ec7c x\u00e1c \u0111\u1ecbnh m\u1ed9t ngu\u1ed3n ti\u1ebfng \u1ed3n c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u ph\u00e2n t\u00edch \u00e2m thanh b\u1ed5 sung ho\u1eb7c th\u00f4ng tin h\u1ed7 tr\u1ee3.<\/p>\n\n\n\n

D\u1eef li\u1ec7u ti\u1ebfng \u1ed3n \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 bao g\u1ed3m:<\/strong><\/p>\n\n\n\n