{"id":4799,"date":"2025-09-10T08:57:12","date_gmt":"2025-09-10T01:57:12","guid":{"rendered":"https:\/\/antoanhanghai.com\/?p=4799"},"modified":"2025-09-10T08:57:12","modified_gmt":"2025-09-10T01:57:12","slug":"kiem-tra-speed-log","status":"publish","type":"post","link":"https:\/\/antoanhanghai.com\/en\/kiem-tra-speed-log\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra Doppler Speed Log sau khi l\u1eafp \u0111\u1eb7t \u2013 Quy tr\u00ecnh k\u1ef9 s\u01b0 c\u1ea7n n\u1eafm r\u00f5"},"content":{"rendered":"<p data-start=\"448\" data-end=\"787\">Trong c\u00e1c d\u1ef1 \u00e1n l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed h\u00e0ng h\u1ea3i, <strong data-start=\"499\" data-end=\"526\">Doppler Speed Log (DSL)<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ec7 th\u1ed1ng quan tr\u1ecdng nh\u01b0ng d\u1ec5 b\u1ecb xem nh\u1eb9 trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ea7u v\u00e0o (commissioning). Vi\u1ec7c thi\u1ebft b\u1ecb \u0111o t\u1ed1c \u0111\u1ed9 t\u00e0u sai s\u1ed1, kh\u00f4ng xu\u1ea5t d\u1eef li\u1ec7u NMEA ho\u1eb7c c\u1ea3nh b\u00e1o l\u1ed7i Doppler th\u01b0\u1eddng b\u1eaft ngu\u1ed3n t\u1eeb <strong data-start=\"744\" data-end=\"786\">vi\u1ec7c ki\u1ec3m tra Speed Log kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 sau khi l\u1eafp<\/strong>.<\/p>\n<p data-start=\"789\" data-end=\"1048\">L\u00e0 ng\u01b0\u1eddi tr\u1ef1c ti\u1ebfp th\u1ef1c hi\u1ec7n l\u1eafp v\u00e0 ch\u1ea1y th\u1eed nhi\u1ec1u h\u1ec7 DSL cho c\u00e1c lo\u1ea1i t\u00e0u t\u1eeb container, t\u00e0u d\u1ea7u \u0111\u1ebfn t\u00e0u c\u00e1 xa b\u1edd, t\u00f4i xin chia s\u1ebb quy tr\u00ecnh ki\u1ec3m tra <strong data-start=\"948\" data-end=\"985\">Speed Log sau khi l\u1eafp \u0111\u1eb7t<\/strong>, \u0111\u1ea3m b\u1ea3o \u0111\u00fang ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt v\u00e0 an to\u00e0n v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf.<\/p>\n<h3 data-start=\"1055\" data-end=\"1120\"><strong data-start=\"1059\" data-end=\"1120\">1. Ki\u1ec3m tra Speed Log v\u1ecb tr\u00ed v\u00e0 h\u01b0\u1edbng l\u1eafp \u0111\u1eb7t transducer (c\u1ea3m bi\u1ebfn)<\/strong><\/h3>\n<p data-start=\"1122\" data-end=\"1194\">\ud83d\udd0e Transducer l\u00e0 \u201cm\u1eaft th\u1ea7n\u201d c\u1ee7a h\u1ec7 DSL, l\u1eafp sai l\u00e0 to\u00e0n h\u1ec7 th\u1ed1ng \u0111o sai:<\/p>\n<ul data-start=\"1196\" data-end=\"1672\">\n<li data-start=\"1196\" data-end=\"1305\">\n<p data-start=\"1198\" data-end=\"1305\"><strong data-start=\"1198\" data-end=\"1213\">V\u1ecb tr\u00ed l\u1eafp:<\/strong> ch\u00ednh gi\u1eefa \u0111\u01b0\u1eddng t\u00e2m d\u1ecdc t\u00e0u, g\u1ea7n khu v\u1ef1c \u0111\u00e1y tr\u01b0\u1edbc m\u0169i, tr\u00e1nh xa bow thruster v\u00e0 \u0111\u00e1y cong.<\/p>\n<\/li>\n<li data-start=\"1306\" data-end=\"1405\">\n<p data-start=\"1308\" data-end=\"1405\"><strong data-start=\"1308\" data-end=\"1323\">\u0110\u1ed9 nghi\u00eang:<\/strong> t\u1ed1i \u01b0u l\u00e0 <strong data-start=\"1334\" data-end=\"1344\">\u2264 5 \u0111\u1ed9<\/strong> l\u1ec7ch tr\u1ee5c th\u1eb3ng \u0111\u1ee9ng, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u ph\u1ea3n x\u1ea1 ch\u00ednh x\u00e1c.<\/p>\n<\/li>\n<li data-start=\"1406\" data-end=\"1528\">\n<p data-start=\"1408\" data-end=\"1528\"><strong data-start=\"1408\" data-end=\"1422\">Chi\u1ec1u l\u1eafp:<\/strong> c\u00e1p t\u00edn hi\u1ec7u ph\u1ea3i h\u01b0\u1edbng \u0111\u00fang ph\u00eda Aft theo quy \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb, tr\u00e1nh l\u1eafp ng\u01b0\u1ee3c s\u1ebd g\u00e2y sai l\u1ec7ch t\u1ed1c \u0111\u1ed9.<\/p>\n<\/li>\n<li data-start=\"1529\" data-end=\"1672\">\n<p data-start=\"1531\" data-end=\"1672\"><strong data-start=\"1531\" data-end=\"1561\">Kho\u1ea3ng c\u00e1ch t\u1eeb sonar kh\u00e1c:<\/strong> n\u1ebfu t\u00e0u c\u00f3 thi\u1ebft b\u1ecb echo sounder ho\u1eb7c sonar, kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u n\u00ean t\u1eeb <strong data-start=\"1636\" data-end=\"1651\">2.5 \u2013 3 m\u00e9t<\/strong> \u0111\u1ec3 tr\u00e1nh nhi\u1ec5u ch\u00e9o.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1674\" data-end=\"1792\">\ud83d\udee0 Sau khi t\u00e0u h\u1ea1 th\u1ee7y, ki\u1ec3m tra k\u1ef9 \u0111\u00e1y thi\u1ebft b\u1ecb \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 b\u1ecdt kh\u00ed ho\u1eb7c sinh v\u1eadt b\u00e1m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00edn hi\u1ec7u.<\/p>\n<h3 data-start=\"1799\" data-end=\"1846\"><strong data-start=\"1803\" data-end=\"1846\">2. Ki\u1ec3m tra Speed Log v\u1ec1 c\u1ea5p ngu\u1ed3n v\u00e0 relay c\u1ea3nh b\u00e1o<\/strong><\/h3>\n<p data-start=\"1848\" data-end=\"1930\">\u2705 \u0110\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n \u1ed5n \u0111\u1ecbnh (th\u01b0\u1eddng l\u00e0 24VDC ho\u1eb7c 220VAC t\u00f9y model):<\/p>\n<ul data-start=\"1931\" data-end=\"2062\">\n<li data-start=\"1931\" data-end=\"1992\">\n<p data-start=\"1933\" data-end=\"1992\">D\u00f2ng ti\u00eau th\u1ee5 ph\u1ea3i n\u1eb1m trong gi\u1edbi h\u1ea1n thi\u1ebft k\u1ebf, th\u01b0\u1eddng &lt;1A.<\/p>\n<\/li>\n<li data-start=\"1993\" data-end=\"2062\">\n<p data-start=\"1995\" data-end=\"2062\">Ki\u1ec3m tra ti\u1ebfp \u0111i\u1ec3m relay c\u1ea3nh b\u00e1o: m\u1ea5t t\u00edn hi\u1ec7u, m\u1ea5t ngu\u1ed3n Doppler.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2064\" data-end=\"2174\">\ud83d\udd27 G\u1ee3i \u00fd: N\u1ed1i relay c\u1ea3nh b\u00e1o v\u1edbi h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng chung ho\u1eb7c BNWAS \u0111\u1ec3 ph\u00e1t hi\u1ec7n nhanh khi m\u1ea5t d\u1eef li\u1ec7u \u0111\u1ea7u ra.<\/p>\n<h3 data-start=\"2181\" data-end=\"2236\"><strong data-start=\"2185\" data-end=\"2236\">3. Ki\u1ec3m tra Speed log v\u1ec1 t\u00edn hi\u1ec7u hi\u1ec3n th\u1ecb v\u00e0 d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9<\/strong><\/h3>\n<p data-start=\"2238\" data-end=\"2302\">Tr\u00ean m\u00e0n h\u00ecnh \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m (Display Unit), c\u1ea7n ki\u1ec3m tra:<\/p>\n<ul data-start=\"2304\" data-end=\"2594\">\n<li data-start=\"2304\" data-end=\"2374\">\n<p data-start=\"2306\" data-end=\"2374\">T\u1ed1c \u0111\u1ed9 <strong data-start=\"2313\" data-end=\"2338\">Fore-Aft v\u00e0 Port-Stbd<\/strong> hi\u1ec3n th\u1ecb \u1ed5n \u0111\u1ecbnh khi t\u00e0u di chuy\u1ec3n.<\/p>\n<\/li>\n<li data-start=\"2375\" data-end=\"2439\">\n<p data-start=\"2377\" data-end=\"2439\">T\u1ed1c \u0111\u1ed9 hi\u1ec3n th\u1ecb kh\u1edbp t\u01b0\u01a1ng \u0111\u1ed1i v\u1edbi t\u00edn hi\u1ec7u GPS, AIS ho\u1eb7c VDR.<\/p>\n<\/li>\n<li data-start=\"2440\" data-end=\"2498\">\n<p data-start=\"2442\" data-end=\"2498\">Chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 GPS (n\u1ebfu c\u00f3) v\u00e0 so s\u00e1nh m\u1ee9c sai l\u1ec7ch.<\/p>\n<\/li>\n<li data-start=\"2499\" data-end=\"2594\">\n<p data-start=\"2501\" data-end=\"2594\">Quan s\u00e1t bi\u1ec3u t\u01b0\u1ee3ng c\u1ea3nh b\u00e1o Doppler c\u00f3 s\u00e1ng kh\u00f4ng \u2192 n\u1ebfu c\u00f3, ki\u1ec3m tra l\u1ea1i k\u1ebft n\u1ed1i transducer.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2596\" data-end=\"2724\">\ud83d\udca1 L\u01b0u \u00fd: N\u1ebfu t\u00e0u kh\u00f4ng di chuy\u1ec3n, c\u00f3 th\u1ec3 b\u1eadt ch\u1ebf \u0111\u1ed9 \u201cDEBUG\u201d ho\u1eb7c \u201cSimulation\u201d (n\u1ebfu thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3) \u0111\u1ec3 ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ea7u ra.<\/p>\n<h3 data-start=\"2731\" data-end=\"2796\"><strong data-start=\"2735\" data-end=\"2796\">4. Ki\u1ec3m tra Speed log v\u1ec1 d\u1eef li\u1ec7u NMEA v\u00e0 t\u01b0\u01a1ng th\u00edch h\u1ec7 th\u1ed1ng li\u00ean k\u1ebft<\/strong><\/h3>\n<p data-start=\"2798\" data-end=\"2873\">DSL th\u01b0\u1eddng xu\u1ea5t t\u00edn hi\u1ec7u qua giao th\u1ee9c <strong data-start=\"2837\" data-end=\"2850\">NMEA 0183<\/strong>, g\u1ed3m c\u00e1c c\u00e2u ph\u1ed5 bi\u1ebfn:<\/p>\n<ul data-start=\"2874\" data-end=\"2983\">\n<li data-start=\"2874\" data-end=\"2913\">\n<p data-start=\"2876\" data-end=\"2913\"><code data-start=\"2876\" data-end=\"2884\">$IIVBW<\/code>: t\u1ed1c \u0111\u1ed9 Fore-Aft \/ Port-Stbd<\/p>\n<\/li>\n<li data-start=\"2914\" data-end=\"2942\">\n<p data-start=\"2916\" data-end=\"2942\"><code data-start=\"2916\" data-end=\"2924\">$IIVLW<\/code>: t\u1ed5ng qu\u00e3ng \u0111\u01b0\u1eddng<\/p>\n<\/li>\n<li data-start=\"2943\" data-end=\"2983\">\n<p data-start=\"2945\" data-end=\"2983\"><code data-start=\"2945\" data-end=\"2953\">$IIVTG<\/code>: h\u01b0\u1edbng v\u00e0 t\u1ed1c \u0111\u1ed9 qua m\u1eb7t n\u01b0\u1edbc<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2985\" data-end=\"3066\">\u2705 S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ea7u ra (NMEA Reader ho\u1eb7c GDS system) \u0111\u1ec3 ki\u1ec3m tra xem:<\/p>\n<ul data-start=\"3067\" data-end=\"3209\">\n<li data-start=\"3067\" data-end=\"3098\">\n<p data-start=\"3069\" data-end=\"3098\">C\u00f3 \u0111\u1ee7 c\u00e1c c\u00e2u c\u1ea7n thi\u1ebft kh\u00f4ng<\/p>\n<\/li>\n<li data-start=\"3099\" data-end=\"3168\">\n<p data-start=\"3101\" data-end=\"3168\">T\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u00f3 \u0111\u00fang baudrate kh\u00f4ng (th\u01b0\u1eddng l\u00e0 4800 ho\u1eb7c 9600 bps)<\/p>\n<\/li>\n<li data-start=\"3169\" data-end=\"3209\">\n<p data-start=\"3171\" data-end=\"3209\">D\u1eef li\u1ec7u c\u00f3 b\u1ecb tr\u1ec5 ho\u1eb7c nh\u1ea3y lo\u1ea1n kh\u00f4ng<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3211\" data-end=\"3300\">\ud83c\udfaf \u0110\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb nh\u1eadn nh\u01b0 VDR, autopilot, radar \u0111\u1ec1u nh\u1eadn d\u1eef li\u1ec7u ch\u00ednh x\u00e1c t\u1eeb DSL th\u00f4ng qua ki\u1ec3m tra <strong data-start=\"948\" data-end=\"985\">Speed Log<\/strong><\/p>\n<h3 data-start=\"3307\" data-end=\"3374\"><strong data-start=\"3311\" data-end=\"3374\">5. \u0110i\u1ec1u ch\u1ec9nh hi\u1ec7u chu\u1ea9n ban \u0111\u1ea7u: Track Depth, Speed Offset<\/strong><\/h3>\n<p data-start=\"3376\" data-end=\"3425\">Sau khi l\u1eafp \u0111\u1eb7t, k\u1ef9 s\u01b0 c\u1ea7n hi\u1ec7u ch\u1ec9nh 2 th\u00f4ng s\u1ed1:<\/p>\n<ul data-start=\"3427\" data-end=\"3666\">\n<li data-start=\"3427\" data-end=\"3536\">\n<p data-start=\"3429\" data-end=\"3536\"><strong data-start=\"3429\" data-end=\"3444\">Track Depth<\/strong>: \u0111\u1ed9 s\u00e2u m\u00e0 thi\u1ebft b\u1ecb ch\u1ecdn \u0111\u1ec3 ph\u00e1t v\u00e0 thu s\u00f3ng (th\u01b0\u1eddng l\u00e0 2\u20135m), \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a v\u00e0o lo\u1ea1i t\u00e0u.<\/p>\n<\/li>\n<li data-start=\"3537\" data-end=\"3666\">\n<p data-start=\"3539\" data-end=\"3666\"><strong data-start=\"3539\" data-end=\"3555\">Speed Offset<\/strong>: \u0111i\u1ec1u ch\u1ec9nh n\u1ebfu t\u1ed1c \u0111\u1ed9 \u0111o l\u1ec7ch nhi\u1ec1u so v\u1edbi AIS\/GPS (\u00b10.1~0.5 knots c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c t\u00f9y \u0111i\u1ec1u ki\u1ec7n bi\u1ec3n).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3668\" data-end=\"3792\">\u2705 C\u00e1c m\u1ee5c n\u00e0y th\u01b0\u1eddng n\u1eb1m trong menu k\u1ef9 thu\u1eadt (Password Protected), c\u1ea7n thao t\u00e1c c\u1ea9n th\u1eadn v\u00e0 l\u01b0u l\u1ea1i th\u00f4ng s\u1ed1 sau \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n<h3 data-start=\"3799\" data-end=\"3860\"><strong data-start=\"3803\" data-end=\"3860\">6. Ki\u1ec3m tra Speed log v\u1ec1 ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng fallback v\u00e0 nh\u1eadt k\u00fd l\u1ed7i<\/strong><\/h3>\n<p data-start=\"3862\" data-end=\"3894\">M\u1ed9t thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng c\u00f3:<\/p>\n<ul data-start=\"3895\" data-end=\"4061\">\n<li data-start=\"3895\" data-end=\"3966\">\n<p data-start=\"3897\" data-end=\"3966\"><strong data-start=\"3897\" data-end=\"3912\">Ch\u1ebf \u0111\u1ed9 AUTO<\/strong>: t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n gi\u1eefa Doppler v\u00e0 GPS khi m\u1ea5t t\u00edn hi\u1ec7u.<\/p>\n<\/li>\n<li data-start=\"3967\" data-end=\"4061\">\n<p data-start=\"3969\" data-end=\"4061\"><strong data-start=\"3969\" data-end=\"3996\">Nh\u1eadt k\u00fd l\u1ed7i (Error Log)<\/strong>: l\u01b0u c\u00e1c s\u1ef1 ki\u1ec7n nh\u01b0 m\u1ea5t ngu\u1ed3n, l\u1ed7i t\u00edn hi\u1ec7u, sai chu\u1ea9n d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4063\" data-end=\"4200\">\ud83d\udca1 G\u1ee3i \u00fd: B\u1eadt th\u1eed ch\u1ebf \u0111\u1ed9 AUTO v\u00e0 r\u00fat transducer gi\u1ea3 l\u1eadp l\u1ed7i \u2192 xem h\u1ec7 th\u1ed1ng c\u00f3 chuy\u1ec3n v\u1ec1 GPS hay kh\u00f4ng, relay c\u1ea3nh b\u00e1o c\u00f3 k\u00edch ho\u1ea1t kh\u00f4ng.<\/p>\n<h3 data-start=\"4207\" data-end=\"4223\"><strong data-start=\"4211\" data-end=\"4223\">K\u1ebft lu\u1eadn<\/strong><\/h3>\n<p data-start=\"4225\" data-end=\"4455\">Ki\u1ec3m tra Speed Log sau khi l\u1eafp \u0111\u1eb7t kh\u00f4ng th\u1ec3 ch\u1ec9 d\u1eebng \u1edf vi\u1ec7c &#8220;b\u1eadt ngu\u1ed3n v\u00e0 xem s\u1ed1 ch\u1ea1y&#8221;. \u0110\u00f3 l\u00e0 m\u1ed9t quy tr\u00ecnh k\u1ef9 thu\u1eadt \u0111\u00f2i h\u1ecfi kinh nghi\u1ec7m th\u1ef1c t\u1ebf, hi\u1ec3u bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd Doppler, giao th\u1ee9c d\u1eef li\u1ec7u v\u00e0 \u0111\u1eb7c th\u00f9 t\u1eebng lo\u1ea1i t\u00e0u.<\/p>\n<h3>Li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 nh\u1eadn t\u01b0 v\u1ea5n chi ti\u1ebft !\u00a0<strong>097 800 1968 (DT\/Zalo)<\/strong><\/h3>\n<p>Link :<\/p>\n<p><a href=\"https:\/\/youtu.be\/Yx8801cnQCo?si=DvBhrVwu9mgRm30p\" target=\"_blank\" rel=\"noopener\">Video Unbox S\u1ea3n Ph\u1ea9m<\/a><\/p>\n<p><a href=\"https:\/\/antoanhanghai.com\/en\/product\/do-toc-do-ds-99\/\">S\u1ea3n ph\u1ea9m\u00a0<\/a><\/p>\n<p><a href=\"https:\/\/www.imo.org\/en\" target=\"_blank\" rel=\"noopener\">IMO :<\/a><br \/>\n<a href=\"http:\/\/www.vr.org.vn\/\" target=\"_blank\" rel=\"noopener\">VR:<\/a><br \/>\n<a href=\"https:\/\/www.classnk.or.jp\/hp\/en\/index.html\" target=\"_blank\" rel=\"noopener\">NK<\/a><br \/>\n<a href=\"https:\/\/marine-offshore.bureauveritas.com\/marine\/ship-classification\" target=\"_blank\" rel=\"noopener\">BV<\/a><br \/>\n<a href=\"https:\/\/ww2.eagle.org\/en.html\" target=\"_blank\" rel=\"noopener\">ABS<\/a><br \/>\n<a href=\"https:\/\/www.ccs.org.cn\/ccswzen\/\" target=\"_blank\" rel=\"noopener\">CCS<\/a><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Trong c\u00e1c d\u1ef1 \u00e1n l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed h\u00e0ng h\u1ea3i, Doppler Speed Log (DSL) l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ec7 th\u1ed1ng quan tr\u1ecdng nh\u01b0ng d\u1ec5 b\u1ecb xem nh\u1eb9 trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ea7u v\u00e0o (commissioning). Vi\u1ec7c thi\u1ebft b\u1ecb \u0111o t\u1ed1c \u0111\u1ed9 t\u00e0u sai s\u1ed1, kh\u00f4ng xu\u1ea5t d\u1eef li\u1ec7u NMEA ho\u1eb7c c\u1ea3nh b\u00e1o l\u1ed7i Doppler th\u01b0\u1eddng b\u1eaft ngu\u1ed3n t\u1eeb vi\u1ec7c ki\u1ec3m tra Speed Log kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 sau khi l\u1eafp. L\u00e0 ng\u01b0\u1eddi tr\u1ef1c ti\u1ebfp th\u1ef1c hi\u1ec7n l\u1eafp v\u00e0 ch\u1ea1y th\u1eed nhi\u1ec1u h\u1ec7 DSL cho c\u00e1c lo\u1ea1i t\u00e0u t\u1eeb container, t\u00e0u d\u1ea7u \u0111\u1ebfn t\u00e0u c\u00e1 xa b\u1edd, t\u00f4i xin chia s\u1ebb quy tr\u00ecnh ki\u1ec3m tra Speed Log sau khi l\u1eafp \u0111\u1eb7t, \u0111\u1ea3m b\u1ea3o \u0111\u00fang ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt v\u00e0 an to\u00e0n v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf. 1. Ki\u1ec3m tra Speed Log v\u1ecb tr\u00ed v\u00e0 h\u01b0\u1edbng l\u1eafp \u0111\u1eb7t transducer (c\u1ea3m bi\u1ebfn) \ud83d\udd0e Transducer l\u00e0 \u201cm\u1eaft th\u1ea7n\u201d c\u1ee7a h\u1ec7 DSL, l\u1eafp sai l\u00e0 to\u00e0n h\u1ec7 th\u1ed1ng \u0111o sai: V\u1ecb tr\u00ed l\u1eafp: ch\u00ednh gi\u1eefa \u0111\u01b0\u1eddng t\u00e2m d\u1ecdc t\u00e0u, g\u1ea7n khu v\u1ef1c \u0111\u00e1y tr\u01b0\u1edbc m\u0169i, tr\u00e1nh xa bow thruster v\u00e0 \u0111\u00e1y cong. \u0110\u1ed9 nghi\u00eang: t\u1ed1i \u01b0u l\u00e0 \u2264 5 \u0111\u1ed9 l\u1ec7ch tr\u1ee5c th\u1eb3ng \u0111\u1ee9ng, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u ph\u1ea3n x\u1ea1 ch\u00ednh x\u00e1c. Chi\u1ec1u l\u1eafp: c\u00e1p t\u00edn hi\u1ec7u ph\u1ea3i h\u01b0\u1edbng \u0111\u00fang ph\u00eda Aft theo quy \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb, tr\u00e1nh l\u1eafp ng\u01b0\u1ee3c s\u1ebd g\u00e2y sai l\u1ec7ch t\u1ed1c \u0111\u1ed9. Kho\u1ea3ng c\u00e1ch t\u1eeb sonar kh\u00e1c: n\u1ebfu t\u00e0u c\u00f3 thi\u1ebft b\u1ecb echo sounder ho\u1eb7c sonar, kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u n\u00ean t\u1eeb 2.5 \u2013 3 m\u00e9t \u0111\u1ec3 tr\u00e1nh nhi\u1ec5u ch\u00e9o. \ud83d\udee0 Sau khi t\u00e0u h\u1ea1 th\u1ee7y, ki\u1ec3m tra k\u1ef9 \u0111\u00e1y thi\u1ebft b\u1ecb \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 b\u1ecdt kh\u00ed ho\u1eb7c sinh v\u1eadt b\u00e1m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00edn hi\u1ec7u. 2. Ki\u1ec3m tra Speed Log v\u1ec1 c\u1ea5p ngu\u1ed3n v\u00e0 relay c\u1ea3nh b\u00e1o \u2705 \u0110\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n \u1ed5n \u0111\u1ecbnh (th\u01b0\u1eddng l\u00e0 24VDC ho\u1eb7c 220VAC t\u00f9y model): D\u00f2ng ti\u00eau th\u1ee5 ph\u1ea3i n\u1eb1m trong gi\u1edbi h\u1ea1n thi\u1ebft k\u1ebf, th\u01b0\u1eddng &lt;1A. Ki\u1ec3m tra ti\u1ebfp \u0111i\u1ec3m relay c\u1ea3nh b\u00e1o: m\u1ea5t t\u00edn hi\u1ec7u, m\u1ea5t ngu\u1ed3n Doppler. \ud83d\udd27 G\u1ee3i \u00fd: N\u1ed1i relay c\u1ea3nh b\u00e1o v\u1edbi h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng chung ho\u1eb7c BNWAS \u0111\u1ec3 ph\u00e1t hi\u1ec7n nhanh khi m\u1ea5t d\u1eef li\u1ec7u \u0111\u1ea7u ra. 3. Ki\u1ec3m tra Speed log v\u1ec1 t\u00edn hi\u1ec7u hi\u1ec3n th\u1ecb v\u00e0 d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 Tr\u00ean m\u00e0n h\u00ecnh \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m (Display Unit), c\u1ea7n ki\u1ec3m tra: T\u1ed1c \u0111\u1ed9 Fore-Aft v\u00e0 Port-Stbd hi\u1ec3n th\u1ecb \u1ed5n \u0111\u1ecbnh khi t\u00e0u di chuy\u1ec3n. T\u1ed1c \u0111\u1ed9 hi\u1ec3n th\u1ecb kh\u1edbp t\u01b0\u01a1ng \u0111\u1ed1i v\u1edbi t\u00edn hi\u1ec7u GPS, AIS ho\u1eb7c VDR. Chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 GPS (n\u1ebfu c\u00f3) v\u00e0 so s\u00e1nh m\u1ee9c sai l\u1ec7ch. Quan s\u00e1t bi\u1ec3u t\u01b0\u1ee3ng c\u1ea3nh b\u00e1o Doppler c\u00f3 s\u00e1ng kh\u00f4ng \u2192 n\u1ebfu c\u00f3, ki\u1ec3m tra l\u1ea1i k\u1ebft n\u1ed1i transducer. \ud83d\udca1 L\u01b0u \u00fd: N\u1ebfu t\u00e0u kh\u00f4ng di chuy\u1ec3n, c\u00f3 th\u1ec3 b\u1eadt ch\u1ebf \u0111\u1ed9 \u201cDEBUG\u201d ho\u1eb7c \u201cSimulation\u201d (n\u1ebfu thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3) \u0111\u1ec3 ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ea7u ra. 4. Ki\u1ec3m tra Speed log v\u1ec1 d\u1eef li\u1ec7u NMEA v\u00e0 t\u01b0\u01a1ng th\u00edch h\u1ec7 th\u1ed1ng li\u00ean k\u1ebft DSL th\u01b0\u1eddng xu\u1ea5t t\u00edn hi\u1ec7u qua giao th\u1ee9c NMEA 0183, g\u1ed3m c\u00e1c c\u00e2u ph\u1ed5 bi\u1ebfn: $IIVBW: t\u1ed1c \u0111\u1ed9 Fore-Aft \/ Port-Stbd $IIVLW: t\u1ed5ng qu\u00e3ng \u0111\u01b0\u1eddng $IIVTG: h\u01b0\u1edbng v\u00e0 t\u1ed1c \u0111\u1ed9 qua m\u1eb7t n\u01b0\u1edbc \u2705 S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ea7u ra (NMEA Reader ho\u1eb7c GDS system) \u0111\u1ec3 ki\u1ec3m tra xem: C\u00f3 \u0111\u1ee7 c\u00e1c c\u00e2u c\u1ea7n thi\u1ebft kh\u00f4ng T\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u00f3 \u0111\u00fang baudrate kh\u00f4ng (th\u01b0\u1eddng l\u00e0 4800 ho\u1eb7c 9600 bps) D\u1eef li\u1ec7u c\u00f3 b\u1ecb tr\u1ec5 ho\u1eb7c nh\u1ea3y lo\u1ea1n kh\u00f4ng \ud83c\udfaf \u0110\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb nh\u1eadn nh\u01b0 VDR, autopilot, radar \u0111\u1ec1u nh\u1eadn d\u1eef li\u1ec7u ch\u00ednh x\u00e1c t\u1eeb DSL th\u00f4ng qua ki\u1ec3m tra Speed Log 5. \u0110i\u1ec1u ch\u1ec9nh hi\u1ec7u chu\u1ea9n ban \u0111\u1ea7u: Track Depth, Speed Offset Sau khi l\u1eafp \u0111\u1eb7t, k\u1ef9 s\u01b0 c\u1ea7n hi\u1ec7u ch\u1ec9nh 2 th\u00f4ng s\u1ed1: Track Depth: \u0111\u1ed9 s\u00e2u m\u00e0 thi\u1ebft b\u1ecb ch\u1ecdn \u0111\u1ec3 ph\u00e1t v\u00e0 thu s\u00f3ng (th\u01b0\u1eddng l\u00e0 2\u20135m), \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a v\u00e0o lo\u1ea1i t\u00e0u. Speed Offset: \u0111i\u1ec1u ch\u1ec9nh n\u1ebfu t\u1ed1c \u0111\u1ed9 \u0111o l\u1ec7ch nhi\u1ec1u so v\u1edbi AIS\/GPS (\u00b10.1~0.5 knots c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c t\u00f9y \u0111i\u1ec1u ki\u1ec7n bi\u1ec3n). \u2705 C\u00e1c m\u1ee5c n\u00e0y th\u01b0\u1eddng n\u1eb1m trong menu k\u1ef9 thu\u1eadt (Password Protected), c\u1ea7n thao t\u00e1c c\u1ea9n th\u1eadn v\u00e0 l\u01b0u l\u1ea1i th\u00f4ng s\u1ed1 sau \u0111i\u1ec1u ch\u1ec9nh. 6. Ki\u1ec3m tra Speed log v\u1ec1 ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng fallback v\u00e0 nh\u1eadt k\u00fd l\u1ed7i M\u1ed9t thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng c\u00f3: Ch\u1ebf \u0111\u1ed9 AUTO: t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n gi\u1eefa Doppler v\u00e0 GPS khi m\u1ea5t t\u00edn hi\u1ec7u. Nh\u1eadt k\u00fd l\u1ed7i (Error Log): l\u01b0u c\u00e1c s\u1ef1 ki\u1ec7n nh\u01b0 m\u1ea5t ngu\u1ed3n, l\u1ed7i t\u00edn hi\u1ec7u, sai chu\u1ea9n d\u1eef li\u1ec7u. \ud83d\udca1 G\u1ee3i \u00fd: B\u1eadt th\u1eed ch\u1ebf \u0111\u1ed9 AUTO v\u00e0 r\u00fat transducer gi\u1ea3 l\u1eadp l\u1ed7i \u2192 xem h\u1ec7 th\u1ed1ng c\u00f3 chuy\u1ec3n v\u1ec1 GPS hay kh\u00f4ng, relay c\u1ea3nh b\u00e1o c\u00f3 k\u00edch ho\u1ea1t kh\u00f4ng. K\u1ebft lu\u1eadn Ki\u1ec3m tra Speed Log sau khi l\u1eafp \u0111\u1eb7t kh\u00f4ng th\u1ec3 ch\u1ec9 d\u1eebng \u1edf vi\u1ec7c &#8220;b\u1eadt ngu\u1ed3n v\u00e0 xem s\u1ed1 ch\u1ea1y&#8221;. \u0110\u00f3 l\u00e0 m\u1ed9t quy tr\u00ecnh k\u1ef9 thu\u1eadt \u0111\u00f2i h\u1ecfi kinh nghi\u1ec7m th\u1ef1c t\u1ebf, hi\u1ec3u bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd Doppler, giao th\u1ee9c d\u1eef li\u1ec7u v\u00e0 \u0111\u1eb7c th\u00f9 t\u1eebng lo\u1ea1i t\u00e0u. Li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 nh\u1eadn t\u01b0 v\u1ea5n chi ti\u1ebft !\u00a0097 800 1968 (DT\/Zalo) Link : Video Unbox S\u1ea3n Ph\u1ea9m S\u1ea3n ph\u1ea9m\u00a0 IMO : VR: NK BV ABS CCS &nbsp;<\/p>","protected":false},"author":1,"featured_media":4800,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158],"tags":[],"class_list":["post-4799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-update-news"],"_links":{"self":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts\/4799","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/comments?post=4799"}],"version-history":[{"count":1,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts\/4799\/revisions"}],"predecessor-version":[{"id":4801,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts\/4799\/revisions\/4801"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/media\/4800"}],"wp:attachment":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/media?parent=4799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/categories?post=4799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/tags?post=4799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}