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\n 5\/5 - (1 vote) <\/div>\n <\/div>\n
C\u00e1c gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t c\u00e1p ng\u1ea7m<\/p>\n
- \n
- Ph\u01b0\u01a1ng ph\u00e1p\u00a0 DAS<\/strong> ph\u00e1t hi\u1ec7n rung \u0111\u1ed9ng v\u00e0 \u0111o n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh d\u1ecdc theo to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i c\u1ee7a s\u1ee3i quang. S\u1ee3i quang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ec3 c\u00f3 h\u00e0ng ng\u00e0n micr\u00f4 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t.<\/li>\n<\/ul>\n
C\u00e1c thu\u1eadt to\u00e1n ph\u00e1t hi\u1ec7n v\u00e0 ph\u00e2n lo\u1ea1i ph\u1ee9c t\u1ea1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 \u0111\u1ecbnh v\u1ecb.<\/p>\n
![\"\"](\"https:\/\/epc1.hdcvina.com\/wp-content\/uploads\/2021\/08\/DAS.png\")
<\/p>\n- \n
- Ph\u01b0\u01a1ng ph\u00e1p \u0111o PD<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 v\u00e0 kh\u00f4ng ph\u00e1 h\u1ee7y t\u00ednh n\u0103ng c\u00e1ch \u0111i\u1ec7n c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1p.
\nM\u1ee5c \u0111\u00edch c\u1ee7a h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t PD l\u00e0 gi\u00e1m s\u00e1t c\u00e1c v\u1ea5n \u0111\u1ec1 c\u00e1ch \u0111i\u1ec7n tr\u01b0\u1edbc s\u1ef1 c\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ee7a d\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n th\u00f4ng qua vi\u1ec7c \u0111o c\u00e1c t\u00edn hi\u1ec7u ph\u00f3ng \u0111i\u1ec7n t\u1eebng ph\u1ea7n theo th\u1eddi gian th\u1ef1c t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng.
\n\u0110\u1ec3 ph\u00e1t hi\u1ec7n t\u00edn hi\u1ec7u PD t\u1ea1i h\u1ec7 th\u1ed1ng c\u00e1p \u0111i\u1ec7n t\u1ea1i ch\u1ed7, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n HFPD (Ph\u00f3ng \u0111i\u1ec7n m\u1ed9t ph\u1ea7n t\u1ea7n s\u1ed1 cao) v\u00e0 h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t tr\u1ef1c tuy\u1ebfn HFPD \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n. H\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t HFPD \u0111o c\u00e1c t\u00edn hi\u1ec7u PD v\u1edbi \u0111\u1ed9 nh\u1ea1y cao. V\u00e0 d\u1eef li\u1ec7u PD \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch m\u1eabu d\u1eef li\u1ec7u v\u00e0 ph\u1ea7n m\u1ec1m m\u1ea1ng n\u01a1-ron cho d\u00f9 t\u00edn hi\u1ec7u ph\u00e1t hi\u1ec7n c\u00f3 ph\u1ea3i l\u00e0 PD hay kh\u00f4ng. Khi t\u00edn hi\u1ec7u PD \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n, t\u00edn hi\u1ec7u b\u00e1o \u0111\u1ed9ng s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn kh\u00e1ch h\u00e0ng.<\/li>\n<\/ul>\n![\"\"](\"https:\/\/epc1.hdcvina.com\/wp-content\/uploads\/2021\/08\/5-3.png\")
<\/p>\n<\/p>\n
- \n
- Ph\u01b0\u01a1ng ph\u00e1p DTS<\/strong> d\u1ef1a tr\u00ean k\u1ef9 thu\u1eadt \u0111o ph\u1ea3n x\u1ea1 mi\u1ec1n th\u1eddi gian quang h\u1ecdc (OTDR) c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00e1n x\u1ea1 ng\u01b0\u1ee3c. \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c c\u00e1c k\u1ef9 s\u01b0 vi\u1ec5n th\u00f4ng s\u1eed d\u1ee5ng th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 ki\u1ec3m tra t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u00e1p quang. Trong k\u1ef9 thu\u1eadt n\u00e0y, m\u1ed9t xung \u00e1nh s\u00e1ng laser \u0111\u01b0\u1ee3c ph\u00f3ng v\u00e0o s\u1ee3i c\u1ea3m bi\u1ebfn th\u00f4ng qua m\u1ed9t b\u1ed9 gh\u00e9p \u0111\u1ecbnh h\u01b0\u1edbng. \u00c1nh s\u00e1ng b\u1ecb ph\u00e2n t\u00e1n khi xung truy\u1ec1n xu\u1ed1ng s\u1ee3i quang th\u00f4ng qua m\u1ed9t s\u1ed1 c\u01a1 ch\u1ebf bao g\u1ed3m dao \u0111\u1ed9ng m\u1eadt \u0111\u1ed9 v\u00e0 th\u00e0nh ph\u1ea7n (\u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00e1n x\u1ea1 Rayleigh) c\u0169ng nh\u01b0 T\u00e1n x\u1ea1 Raman do ph\u00e2n t\u1eed.
\nM\u1ed9t ph\u1ea7n c\u1ee7a \u00e1nh s\u00e1ng t\u00e1n x\u1ea1 n\u00e0y n\u1eb1m trong h\u00ecnh n\u00f3n ch\u1ea5p nh\u1eadn c\u1ee7a s\u1ee3i quang (ngh\u0129a l\u00e0 \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i trong \u1ed1ng d\u1eabn s\u00f3ng quang ho\u1eb7c l\u00f5i c\u1ee7a s\u1ee3i quang) v\u00e0 \u0111\u01b0\u1ee3c d\u1eabn ng\u01b0\u1ee3c tr\u1edf l\u1ea1i ngu\u1ed3n. T\u00edn hi\u1ec7u tr\u1edf l\u1ea1i n\u00e0y \u0111\u01b0\u1ee3c t\u00e1ch ra b\u1edfi b\u1ed9 gh\u00e9p \u0111\u1ecbnh h\u01b0\u1edbng t\u1edbi m\u1ed9t m\u00e1y d\u00f2 quang \u0111i\u1ec7n t\u1eed. Trong m\u1ed9t s\u1ee3i quang \u0111\u1ed3ng nh\u1ea5t, c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng b\u1ecb t\u00e1n x\u1ea1 ng\u01b0\u1ee3c gi\u1ea3m d\u1ea7n theo c\u1ea5p s\u1ed1 nh\u00e2n theo th\u1eddi gian. Do \u0111\u00f3, bi\u1ebft t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng trong s\u1ee3i quang, qu\u00e3ng \u0111\u01b0\u1eddng \u00e1nh s\u00e1ng truy\u1ec1n xu\u1ed1ng s\u1ee3i quang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n.![\"\"](\"https:\/\/epc1.hdcvina.com\/wp-content\/uploads\/2021\/08\/3-4.png\")
<\/li>\n<\/ul>\n<\/p>\n","protected":false},"excerpt":{"rendered":"
\u1ee8ng d\u1ee5ng
\nGi\u1ea3i ph\u00e1p t\u1ed5ng qu\u00e1t cho vi\u1ec7c gi\u00e1m s\u00e1t c\u1ea5p ng\u1ea7m nh\u1eb1m n\u00e2ng cao kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh, qu\u1ea3n l\u00ed v\u00e0 c\u00f3 k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec b\u1ea3o d\u01b0\u1ee1ng<\/p>\n- \n
- Gi\u00e1m s\u00e1t ph\u00f3ng \u0111i\u1ec7n c\u1ee5c b\u1ed9\u00a0 PD online<\/li>\n
- Gi\u00e1m s\u00e1t rung ch\u1ea5n do thi c\u00f4ng, \u0111\u1ed9ng \u0111\u1ea5t….<\/li>\n
- Gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 c\u00e1p ng\u1ea7m<\/li>\n<\/ul>\n","protected":false},"featured_media":3335,"comment_status":"open","ping_status":"closed","template":"","meta":{"inline_featured_image":false},"product_cat":[370],"product_tag":[468,469,463,464,465,466,458,470,467],"yst_prominent_words":[],"class_list":{"0":"post-3394","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-giai-phap","7":"product_tag-das","8":"product_tag-dts","9":"product_tag-giai-phap-cap-ngam-bien","10":"product_tag-giam-sat-cap-ngam","11":"product_tag-giam-sat-nghiet","12":"product_tag-giam-sat-phong-dien-cuc-bo","13":"product_tag-giam-sat-rung-dong","14":"product_tag-pd","15":"product_tag-phong-dien-cuc-bo","17":"first","18":"instock","19":"shipping-taxable","20":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/product\/3394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/comments?post=3394"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/media\/3335"}],"wp:attachment":[{"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/media?parent=3394"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/product_cat?post=3394"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/product_tag?post=3394"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/pc1epc.vn\/en\/wp-json\/wp\/v2\/yst_prominent_words?post=3394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Ph\u01b0\u01a1ng ph\u00e1p DTS<\/strong> d\u1ef1a tr\u00ean k\u1ef9 thu\u1eadt \u0111o ph\u1ea3n x\u1ea1 mi\u1ec1n th\u1eddi gian quang h\u1ecdc (OTDR) c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00e1n x\u1ea1 ng\u01b0\u1ee3c. \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c c\u00e1c k\u1ef9 s\u01b0 vi\u1ec5n th\u00f4ng s\u1eed d\u1ee5ng th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 ki\u1ec3m tra t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u00e1p quang. Trong k\u1ef9 thu\u1eadt n\u00e0y, m\u1ed9t xung \u00e1nh s\u00e1ng laser \u0111\u01b0\u1ee3c ph\u00f3ng v\u00e0o s\u1ee3i c\u1ea3m bi\u1ebfn th\u00f4ng qua m\u1ed9t b\u1ed9 gh\u00e9p \u0111\u1ecbnh h\u01b0\u1edbng. \u00c1nh s\u00e1ng b\u1ecb ph\u00e2n t\u00e1n khi xung truy\u1ec1n xu\u1ed1ng s\u1ee3i quang th\u00f4ng qua m\u1ed9t s\u1ed1 c\u01a1 ch\u1ebf bao g\u1ed3m dao \u0111\u1ed9ng m\u1eadt \u0111\u1ed9 v\u00e0 th\u00e0nh ph\u1ea7n (\u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00e1n x\u1ea1 Rayleigh) c\u0169ng nh\u01b0 T\u00e1n x\u1ea1 Raman do ph\u00e2n t\u1eed.
- Ph\u01b0\u01a1ng ph\u00e1p \u0111o PD<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 v\u00e0 kh\u00f4ng ph\u00e1 h\u1ee7y t\u00ednh n\u0103ng c\u00e1ch \u0111i\u1ec7n c\u1ee7a h\u1ec7 th\u1ed1ng c\u00e1p.