Trong m\u1ed9t c\u1ea3m bi\u1ebfn c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u00e0y di\u1ec5n ra b\u00ean trong m\u1ed9t photodiode<\/strong> ho\u1eb7c a phototransistor<\/strong>.<\/p>\n\n\n\n C\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p ph\u1ee9c t\u1ea1p c\u1ee7a ba kh\u1ed1i ch\u1ee9c n\u0103ng ch\u00ednh, quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u01a1 b\u1ea3n c\u1ee7a c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n:<\/p>\n\n\n\n Trong ph\u1ea7n l\u1edbn c\u00e1c c\u1ea3m bi\u1ebfn hi\u1ec7n \u0111\u1ea1i, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i \u0111\u00e8n LED (\u0111i-\u1ed1t ph\u00e1t s\u00e1ng) ho\u1eb7c c\u1ea3m bi\u1ebfn laser kh\u00e1c nhau. M\u1eb7c d\u00f9 \u0111\u00e8n LED h\u1ed3ng ngo\u1ea1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng do kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i \u00e1nh s\u00e1ng xung quanh, nh\u01b0ng \u00e1nh s\u00e1ng laser l\u1ea1i \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n nh\u1edd kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng \u1edf kho\u1ea3ng c\u00e1ch xa nh\u1edd ch\u00f9m tia \u0111\u01b0\u1ee3c h\u1ed9i t\u1ee5 cao. Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn laser cho ph\u00e9p c\u00f3 g\u00f3c ch\u00f9m tia r\u1ea5t h\u1eb9p, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c chi ti\u1ebft nh\u1ecf.<\/p>\n\n\n\n Th\u1ea5u k\u00ednh quang h\u1ecdc v\u00e0 b\u1ed9 c\u1ea3m bi\u1ebfn quang t\u1ea1o th\u00e0nh b\u1ed9 ph\u1eadn thu t\u00edn hi\u1ec7u. Th\u1ea5u k\u00ednh l\u00e0 b\u1ed9 ph\u1eadn c\u1ea7n thi\u1ebft v\u00ec n\u00f3 gi\u00fap h\u1ed9i t\u1ee5 c\u00e1c tia s\u00e1ng \u0111i v\u00e0o l\u00ean m\u1ed9t b\u1ec1 m\u1eb7t c\u1ea3m bi\u1ebfn nh\u1ecf. B\u1ed9 thu t\u00edn hi\u1ec7u c\u0169ng c\u00f3 th\u1ec3 h\u1ed9i t\u1ee5 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 t\u1eeb m\u1ee5c ti\u00eau v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh ph\u1ea1m vi g\u00f3c c\u1ee7a h\u1ec7 th\u1ed1ng quang h\u1ecdc b\u00ean trong, \u0111\u1ed3ng th\u1eddi kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c nhi\u1ec5u t\u1eeb m\u00f4i tr\u01b0\u1eddng xung quanh, bao g\u1ed3m c\u1ea3 \u0111\u00e8n flash c\u1ee7a \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng ho\u1eb7c \u00e1nh s\u00e1ng tr\u00ean cao t\u1ea7n s\u1ed1 cao.<\/p>\n\n\n\n Sau khi b\u1ed9 d\u00f2 nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng ph\u00e1t ra, b\u00ean trong ASIC<\/strong> bao g\u1ed3m:<\/p>\n\n\n\n Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi v\u1ecb tr\u00ed c\u1ee7a b\u1ed9 ph\u00e1t v\u00e0 b\u1ed9 thu. C\u00f3 ba lo\u1ea1i c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n ch\u00ednh \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p:<\/p>\n\n\n\n C\u1ea3m bi\u1ebfn xuy\u00ean ch\u00f9m (\u0111\u1ed1i di\u1ec7n)<\/strong><\/p>\n\n\n\n B\u1ed9 ph\u00e1t v\u00e0 b\u1ed9 thu l\u00e0 hai thi\u1ebft b\u1ecb ri\u00eang bi\u1ec7t. C\u1ea3m bi\u1ebfn \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t khi kh\u00f4ng c\u00f3 v\u1eadt c\u1ea3n n\u00e0o n\u1eb1m gi\u1eefa hai b\u1ed9 ph\u1eadn n\u00e0y; khi c\u00f3 v\u1eadt c\u1ea3n \u0111i qua, ch\u00f9m tia s\u1ebd b\u1ecb ng\u1eaft. M\u1ed9t bi\u1ebfn th\u1ec3 chuy\u00ean d\u1ee5ng c\u1ee7a lo\u1ea1i c\u1ea3m bi\u1ebfn n\u00e0y l\u00e0 r\u00e8m \u00e1nh s\u00e1ng; r\u00e8m \u00e1nh s\u00e1ng an to\u00e0n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong vi\u1ec7c b\u1ea3o v\u1ec7 ng\u01b0\u1eddi lao \u0111\u1ed9ng kh\u1ecfi c\u00e1c c\u00e1nh tay robot.<\/p>\n\n\n\n Lo\u1ea1i ph\u1ea3n quang (ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c)<\/strong><\/p>\n\n\n\n B\u1ed9 thu v\u00e0 b\u1ed9 ph\u00e1t \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t chung trong c\u00f9ng m\u1ed9t v\u1ecf. \u00c1nh s\u00e1ng ph\u00e1t ra \u0111\u01b0\u1ee3c h\u01b0\u1edbng t\u1edbi m\u1ed9t \u201cg\u01b0\u01a1ng ph\u1ea3n x\u1ea1\u201d \u0111\u1eb7c bi\u1ec7t v\u00e0 \u0111\u01b0\u1ee3c ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i. M\u1ed9t phi\u00ean b\u1ea3n c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao l\u00e0 c\u1ea3m bi\u1ebfn h\u00ecnh ch\u1eef U, trong \u0111\u00f3 b\u1ed9 ph\u00e1t v\u00e0 b\u1ed9 thu \u0111\u00e3 \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh s\u1eb5n trong m\u1ed9t v\u1ecf h\u00ecnh ch\u1eef U.<\/p>\n\n\n\n Lo\u1ea1i ph\u1ea3n x\u1ea1 khu\u1ebfch t\u00e1n<\/strong><\/p>\n\n\n\n T\u01b0\u01a1ng t\u1ef1 nh\u01b0 lo\u1ea1i ph\u1ea3n x\u1ea1, nh\u01b0ng kh\u00f4ng c\u00f3 b\u1ed9 ph\u1ea3n x\u1ea1. C\u1ea3m bi\u1ebfn s\u1ebd ch\u1edd cho \u0111\u1ebfn khi \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i t\u1eeb ch\u00ednh m\u1ee5c ti\u00eau. Trong nh\u1eefng kh\u00f4ng gian ch\u1eadt h\u1eb9p, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1p quang cho ph\u00e9p \u00e1nh s\u00e1ng ti\u1ebfp c\u1eadn m\u1ee5c ti\u00eau th\u00f4ng qua m\u1ed9t \u1ed1ng d\u1eabn m\u1ecfng v\u00e0 linh ho\u1ea1t.<\/p>\n\n\n\n B\u1ea3ng so s\u00e1nh: C\u00e1c ch\u1ebf \u0111\u1ed9 c\u1ea3m bi\u1ebfn ti\u00eau chu\u1ea9n v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p<\/strong><\/p>\n\n\n\n Khi nh\u1eefng th\u00e1ch th\u1ee9c trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a ng\u00e0y c\u00e0ng gia t\u0103ng, c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn kh\u00e1c nhau \u0111\u00e3 tr\u1edf n\u00ean chuy\u00ean bi\u1ec7t h\u01a1n.<\/p>\n\n\n\n Kh\u1eed n\u1ec1n (BGS)<\/strong><\/p>\n\n\n\n C\u00e1c c\u1ea3m bi\u1ebfn BGS kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c nh\u01b0\u1ee3c \u0111i\u1ec3m l\u1edbn nh\u1ea5t c\u1ee7a c\u1ea3m bi\u1ebfn khu\u1ebfch t\u00e1n: vi\u1ec7c \u201cnh\u00ecn th\u1ea5y\u201d b\u1ee9c t\u01b0\u1eddng ho\u1eb7c b\u1ed9 ph\u1eadn m\u00e1y m\u00f3c n\u1eb1m ph\u00eda sau m\u1ee5c ti\u00eau. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Nguy\u00ean l\u00fd tam gi\u00e1c<\/strong>, c\u1ea3m bi\u1ebfn BGS kh\u00f4ng ch\u1ec9 \u0111o c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng; n\u00f3 c\u00f2n x\u00e1c \u0111\u1ecbnh s\u1ef1 ch\u00eanh l\u1ec7ch kho\u1ea3ng c\u00e1ch b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n g\u00f3c c\u1ee5 th\u1ec3 m\u00e0 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i b\u1ed9 ph\u1eadn thu nh\u1eadn. Nh\u1edd ph\u00e9p t\u00ednh h\u00ecnh h\u1ecdc n\u00e0y, c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 nh\u1eadn di\u1ec7n m\u1ed9t v\u1eadt th\u1ec3 \u1edf kho\u1ea3ng c\u00e1ch 50 mm v\u00e0 ho\u00e0n to\u00e0n b\u1ecf qua m\u1ed9t b\u1ee9c t\u01b0\u1eddng tr\u1eafng s\u00e1ng \u1edf kho\u1ea3ng c\u00e1ch 60 mm, b\u1ea5t k\u1ec3 m\u00e0u s\u1eafc hay \u0111\u1ed9 s\u00e1ng c\u1ee7a n\u1ec1n l\u00e0 nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n\n C\u1ea3m bi\u1ebfn m\u00e0u v\u00e0 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n<\/strong><\/p>\n\n\n\n C\u1ea3m bi\u1ebfn m\u00e0u s\u1eed d\u1ee5ng \u0111\u00e8n LED RGB l\u00e0m thi\u1ebft b\u1ecb nh\u1eadn di\u1ec7n m\u00e0u s\u1eafc. Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0y \u0111\u00f3ng vai tr\u00f2 thi\u1ebft y\u1ebfu trong vi\u1ec7c ph\u00e1t hi\u1ec7n s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1eadn di\u1ec7n d\u1ea5u \u0111\u1ecbnh v\u1ecb m\u00e0u \u0111en tr\u00ean m\u00e0ng bao b\u00ec m\u00e0u xanh \u0111\u1eadm.<\/p>\n\n\n\n Ch\u00f9m tia h\u1ed9i t\u1ee5<\/strong><\/p>\n\n\n\n Lo\u1ea1i ph\u1ea3n x\u1ea1 h\u1ed9i t\u1ee5 t\u1eadp trung c\u00e1c ch\u00f9m tia ph\u00e1t v\u00e0 thu t\u1ea1i m\u1ed9t \u0111i\u1ec3m c\u1ed1 \u0111\u1ecbnh duy nh\u1ea5t trong kh\u00f4ng gian. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ph\u00e1t hi\u1ec7n c\u00e1c v\u1eadt th\u1ec3 r\u1ea5t nh\u1ecf, nh\u01b0 m\u00e9p c\u1ee7a m\u1ed9t t\u1ea5m wafer, \u0111\u1ed3ng th\u1eddi b\u1ecf qua m\u1ecdi th\u1ee9 kh\u00e1c n\u1eb1m tr\u01b0\u1edbc ho\u1eb7c sau \u0111i\u1ec3m h\u1ed9i t\u1ee5 \u0111\u00f3.<\/p>\n\n\n\n Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 c\u00e1c nguy\u00ean l\u00fd v\u1eadt l\u00fd c\u1ee7a m\u00f4i tr\u01b0\u1eddng \u1ee9ng d\u1ee5ng, b\u1edfi v\u00ec c\u00e1c bi\u1ebfn s\u1ed1 b\u00ean ngo\u00e0i c\u00f3 th\u1ec3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn h\u00e0nh vi c\u1ee7a \u00e1nh s\u00e1ng.<\/p>\n\n\n\n M\u1ed7i v\u1eadt li\u1ec7u \u0111\u1ec1u c\u00f3 m\u1ed9t \u201cH\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1\u201d ri\u00eang bi\u1ec7t. Trong c\u00e1c ch\u1ebf \u0111\u1ed9 ph\u1ea3n x\u1ea1 khu\u1ebfch t\u00e1n, m\u1ed9t b\u1ec1 m\u1eb7t tr\u1eafng m\u1edd c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 90% \u00e1nh s\u00e1ng tr\u1edf l\u1ea1i b\u1ed9 thu, trong khi b\u1ec1 m\u1eb7t \u0111en m\u1edd c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 \u00edt h\u01a1n 5% v\u00e0 h\u1ea5p th\u1ee5 ph\u1ea7n c\u00f2n l\u1ea1i d\u01b0\u1edbi d\u1ea1ng nhi\u1ec7t. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 kho\u1ea3ng c\u00e1ch ph\u00e1t hi\u1ec7n hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt th\u1ec3 m\u00e0u t\u1ed1i. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c b\u1ec1 m\u1eb7t \u201cgi\u1ed1ng g\u01b0\u01a1ng\u201d c\u00f3 \u0111\u1ed9 ph\u1ea3n x\u1ea1 cao (ph\u1ea3n x\u1ea1 g\u01b0\u01a1ng) c\u00f3 th\u1ec3 g\u00e2y ra \u201ck\u1ebft qu\u1ea3 d\u01b0\u01a1ng t\u00ednh gi\u1ea3\u201d trong c\u00e1c c\u1ea3m bi\u1ebfn ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c b\u1eb1ng c\u00e1ch ph\u1ea3n x\u1ea1 ch\u00f9m tia tr\u1edf l\u1ea1i gi\u1ed1ng nh\u01b0 c\u00e1ch m\u00e0 ph\u1ea3n x\u1ea1 m\u1ee5c ti\u00eau s\u1ebd l\u00e0m. \u0110\u1ec3 kh\u1eafc ph\u1ee5c \u0111i\u1ec1u n\u00e0y, c\u00e1c b\u1ed9 l\u1ecdc ph\u00e2n c\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ed9 thu ch\u1ec9 nh\u1eadn di\u1ec7n \u00e1nh s\u00e1ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u201ckh\u1eed ph\u00e2n c\u1ef1c\u201d b\u1edfi ph\u1ea3n x\u1ea1 kh\u1ed1i g\u00f3c, t\u1eeb \u0111\u00f3 lo\u1ea1i b\u1ecf hi\u1ec7u qu\u1ea3 \u00e1nh s\u00e1ng ch\u00f3i t\u1eeb kim lo\u1ea1i ho\u1eb7c nh\u1ef1a b\u00f3ng.<\/p>\n\n\n\n \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o c\u1ea3m bi\u1ebfn \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, m\u1ee5c ti\u00eau ph\u1ea3i \u0111\u1ee7 l\u1edbn \u0111\u1ec3 che khu\u1ea5t ho\u1eb7c ph\u1ea3n x\u1ea1 m\u1ed9t l\u01b0\u1ee3ng \u0111\u00e1ng k\u1ec3 ch\u00f9m \u00e1nh s\u00e1ng. Khi ch\u00f9m \u00e1nh s\u00e1ng r\u1ed9ng h\u01a1n v\u1eadt th\u1ec3, v\u00ed d\u1ee5 nh\u01b0 m\u1ed9t s\u1ee3i d\u00e2y m\u1ecfng ho\u1eb7c m\u1ed9t c\u00e2y kim, th\u00ec m\u1ed9t ph\u1ea7n \u00e1nh s\u00e1ng c\u00f3 th\u1ec3 r\u00f2 r\u1ec9 ra xung quanh c\u00e1c c\u1ea1nh v\u00e0 b\u1ed9 thu s\u1ebd kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c s\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i. Trong nh\u1eefng t\u00ecnh hu\u1ed1ng nh\u01b0 v\u1eady, c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn laser v\u00ec ch\u00f9m tia c\u1ee7a c\u1ea3m bi\u1ebfn laser \u0111\u01b0\u1ee3c chu\u1ea9n tr\u1ef1c cao v\u00e0 c\u00f3 ch\u00f9m tia m\u1ecfng nh\u01b0 kim, c\u00f3 th\u1ec3 b\u1ecb c\u00e1c th\u00e0nh ph\u1ea7n vi m\u00f4 l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u00e0n to\u00e0n. H\u01a1n n\u1eefa, h\u00ecnh d\u1ea1ng c\u0169ng r\u1ea5t quan tr\u1ecdng; c\u00e1c b\u1ec1 m\u1eb7t nghi\u00eang ho\u1eb7c h\u00ecnh c\u1ea7u c\u00f3 th\u1ec3 l\u00e0m ch\u1ec7ch h\u01b0\u1edbng \u00e1nh s\u00e1ng kh\u1ecfi b\u1ed9 thu (ph\u1ea3n x\u1ea1 Fresnel), \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 c\u00e0i \u0111\u1eb7t \u0111\u1ed9 nh\u1ea1y cao h\u01a1n.<\/p>\n\n\n\n M\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p hi\u1ebfm khi \u201cs\u1ea1ch s\u1ebd\u201d. C\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m trong kh\u00f4ng kh\u00ed nh\u01b0 b\u1ee5i, h\u01a1i n\u01b0\u1edbc, s\u01b0\u01a1ng d\u1ea7u ho\u1eb7c tia phun m\u1ea1nh l\u00e0m t\u00e1n x\u1ea1 v\u00e0 suy gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng. \u0110\u1ec3 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n \u201cnhi\u1ec5u\u201d n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 xem x\u00e9t \u0110\u1ed9 l\u1ee3i d\u01b0<\/strong>\u2014t\u1ef7 l\u1ec7 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng th\u1ef1c t\u1ebf nh\u1eadn \u0111\u01b0\u1ee3c so v\u1edbi m\u1ee9c n\u0103ng l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u c\u1ea7n thi\u1ebft \u0111\u1ec3 k\u00edch ho\u1ea1t c\u1ea3m bi\u1ebfn. \u0110\u1ed9 l\u1ee3i d\u01b0 cao \u0111\u00f3ng vai tr\u00f2 nh\u01b0 ngu\u1ed3n d\u1ef1 tr\u1eef n\u0103ng l\u01b0\u1ee3ng. Ti\u00eau chu\u1ea9n v\u00e0ng trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t l\u00e0 c\u1ea3m bi\u1ebfn xuy\u00ean tia, v\u00ec \u00e1nh s\u00e1ng ch\u1ec9 c\u1ea7n \u0111i qua s\u01b0\u01a1ng m\u00f9 m\u1ed9t l\u1ea7n. Ng\u01b0\u1ee3c l\u1ea1i, c\u1ea3m bi\u1ebfn ph\u1ea3n x\u1ea1 ph\u1ea3i \u0111i qua c\u00e1c ch\u1ea5t g\u00e2y nhi\u1ec5u hai l\u1ea7n (\u0111\u1ebfn m\u1ee5c ti\u00eau\/b\u1ec1 m\u1eb7t ph\u1ea3n x\u1ea1 v\u00e0 quay tr\u1edf l\u1ea1i), \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng g\u1ea5p \u0111\u00f4i m\u1ee9c \u0111\u1ed9 m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 khi\u1ebfn c\u1ea3m bi\u1ebfn \u0111\u1ed1i m\u1eb7t v\u1edbi nguy c\u01a1 h\u1ecfng h\u00f3c.<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 nh\u1eefng kh\u00eda c\u1ea1nh v\u1eadt l\u00fd ph\u1ee9c t\u1ea1p m\u00e0 ch\u1ec9 ng\u01b0\u1eddi b\u1ea1n \u0111\u1eddi \u0111\u00e3 c\u00f3 kinh nghi\u1ec7m th\u1ef1c t\u1ebf m\u1edbi c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c. V\u00ec 1986<\/strong>, OMCH<\/strong> \u0111\u00e3 g\u00f3p ph\u1ea7n thu h\u1eb9p kho\u1ea3ng c\u00e1ch gi\u1eefa l\u00fd thuy\u1ebft quang h\u1ecdc ti\u00ean ti\u1ebfn v\u00e0 th\u1ef1c t\u1ebf th\u00f4 s\u01a1 c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p. C\u00e1c thi\u1ebft k\u1ebf c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n h\u00e0ng \u0111\u1ea7u c\u1ee7a ch\u00fang t\u00f4i c\u00f3 h\u01a1n 72.000 kh\u00e1ch h\u00e0ng t\u1ea1i h\u01a1n 100 qu\u1ed1c gia<\/strong>, v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 gi\u1ea3i quy\u1ebft m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 nh\u01b0 nhi\u1ec5u v\u00f9ng m\u00f9 v\u00e0 nhi\u1ec5u n\u1ec1n.<\/p>\n\n\n\n \u0110\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ee9c t\u1ea1p v\u1ec1 \u0111\u1ed9 ph\u1ea3n x\u1ea1 n\u00eau tr\u00ean, OMCH \u0111\u00e3 ph\u00e1t tri\u1ec3n trong su\u1ed1t 3.000 m\u00e3 h\u00e0ng chuy\u00ean d\u1ee5ng (SKU)<\/strong> \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean t\u00ednh tin c\u1eady v\u00e0 kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n d\u1ec5 d\u00e0ng. T\u1ea5t c\u1ea3 c\u00e1c c\u1ea3m bi\u1ebfn c\u1ee7a OMCH \u0111\u1ec1u \u0111\u01b0\u1ee3c ki\u1ec3m tra qua quy tr\u00ecnh ba giai \u0111o\u1ea1n, bao g\u1ed3m ki\u1ec3m tra \u0111\u1ea7u v\u00e0o, ki\u1ec3m tra trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 ki\u1ec3m tra cu\u1ed1i c\u00f9ng, t\u1ea1i c\u01a1 s\u1edf c\u1ee7a ch\u00fang t\u00f4i Nh\u00e0 m\u00e1y hi\u1ec7n \u0111\u1ea1i h\u00f3a c\u00f3 di\u1ec7n t\u00edch 8.000 m\u00b2<\/strong>. C\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a OMCH c\u00f3 s\u1eb5n d\u01b0\u1edbi d\u1ea1ng c\u1ea3m bi\u1ebfn BGS \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 b\u1ecf qua c\u00e1c n\u1ec1n s\u00e1ng ch\u00f3i ho\u1eb7c m\u00f4 h\u00ecnh c\u1ea3m bi\u1ebfn xuy\u00ean tia v\u1edbi \u0111\u1ed9 khu\u1ebfch \u0111\u1ea1i d\u01b0 cao, ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec1u b\u1ee5i, v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 9001, CE, RoHS v\u00e0 CCC. OMCH mang \u0111\u1ebfn hi\u1ec7u su\u1ea5t ho\u00e0n h\u1ea3o v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c t\u00ednh b\u1eb1ng mili gi\u00e2y c\u00f9ng d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt nhanh ch\u00f3ng 24\/7, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng c\u1ee7a qu\u00fd kh\u00e1ch s\u1ebd lu\u00f4n duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng, b\u1ea5t k\u1ec3 m\u00f4i tr\u01b0\u1eddng c\u1ea3m bi\u1ebfn c\u1ee7a qu\u00fd kh\u00e1ch ph\u1ee9c t\u1ea1p \u0111\u1ebfn \u0111\u00e2u.<\/p>\n\n\n\n Sau khi c\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n m\u1ed9t v\u1eadt th\u1ec3, n\u00f3 ph\u1ea3i truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u1ebfn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n. Qu\u00e1 tr\u00ecnh n\u00e0y li\u00ean quan \u0111\u1ebfn hai kh\u00e1i ni\u1ec7m \u0111i\u1ec7n t\u1eed quan tr\u1ecdng.<\/p>\n\n\n\n NPN so v\u1edbi PNP (C\u00f2n g\u1ecdi l\u00e0 \u201cc\u1ef1c t\u00ednh\u201d)<\/strong><\/p>\n\n\n\n \u0110i\u1ec1u n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn lo\u1ea1i b\u00f3ng b\u00e1n d\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea5p c\u00f4ng su\u1ea5t:<\/p>\n\n\n\n Ch\u1ebf \u0111\u1ed9 s\u00e1ng so v\u1edbi ch\u1ebf \u0111\u1ed9 t\u1ed1i (Nguy\u00ean l\u00fd)<\/strong><\/p>\n\n\n\n \u0110i\u1ec1u n\u00e0y quy\u1ebft \u0111\u1ecbnh th\u1eddi \u0111i\u1ec3m t\u00edn hi\u1ec7u \u0111\u1ea7u ra \u1edf tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng:<\/p>\n\n\n\n Ngay c\u1ea3 nh\u1eefng c\u1ea3m bi\u1ebfn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tinh vi nh\u1ea5t c\u0169ng c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n khi v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf. B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 l\u00e0 t\u00ecm ra nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a s\u1ef1 c\u1ed1:<\/p>\n\n\n\n S\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c giao th\u1ee9c truy\u1ec1n th\u00f4ng quang h\u1ecdc nh\u01b0 IO-Link \u0111ang l\u00e0m thay \u0111\u1ed5i c\u00e1c thi\u1ebft b\u1ecb n\u00e0y. C\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a c\u1ea3m bi\u1ebfn m\u1edbi cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c v\u1ec1 \u0111\u1ed9 s\u00e1ng c\u1ee7a \u0111\u00e8n LED ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 b\u00ean trong. Th\u00f4ng tin n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00f4ng t\u00e1c b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n, trong \u0111\u00f3 vi\u1ec7c x\u00e1c \u0111\u1ecbnh s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng m\u1ee5c ti\u00eau kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n Thay v\u00ec ch\u1ec9 \u0111\u01b0a ra k\u1ebft qu\u1ea3 \u201cC\u00f3\/Kh\u00f4ng\u201d, m\u1ed9t c\u1ea3m bi\u1ebfn h\u1ed7 tr\u1ee3 IO-Link c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c v\u1ec1 t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n\n\n\n V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n h\u01b0\u1edbng t\u1edbi s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng h\u00f3a cao h\u01a1n, vi\u1ec7c t\u00edch h\u1ee3p c\u00e1c giao th\u1ee9c truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1 s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u1ea3m bi\u1ebfn s\u1ebd tr\u1edf th\u00e0nh nh\u1eefng th\u00e0nh ph\u1ea7n \u0111\u00e1ng tin c\u1eady v\u00e0 th\u00f4ng minh nh\u1ea5t trong d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n K\u1ebft lu\u1eadn<\/strong><\/p>\n\n\n\n Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n \u2013 t\u1ee9c l\u00e0 c\u00e1ch \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh l\u01b0\u1ee3ng t\u1eed v\u00e0 c\u00e1ch x\u00e1c \u0111\u1ecbnh logic c\u1ee7a c\u00e1c \u0111\u1ea7u ra NPN\/PNP \u2013 l\u00e0 m\u1ed9t trong nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n m\u00e0 b\u1ea5t k\u1ef3 k\u1ef9 s\u01b0 hay k\u1ef9 thu\u1eadt vi\u00ean n\u00e0o trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u0169ng c\u1ea7n n\u1eafm v\u1eefng. B\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn \u0111\u00fang ch\u1ebf \u0111\u1ed9 c\u1ea3m bi\u1ebfn v\u00e0 hi\u1ec3u r\u00f5 c\u00e1c bi\u1ebfn s\u1ed1 m\u00f4i tr\u01b0\u1eddng trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh, b\u1ea1n c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng nhanh h\u01a1n, an to\u00e0n h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>","protected":false},"excerpt":{"rendered":" Trong b\u1ed1i c\u1ea3nh C\u00e1ch m\u1ea1ng C\u00f4ng nghi\u1ec7p 4.0 \u0111ang thay \u0111\u1ed5i nhanh ch\u00f3ng, s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a khoa h\u1ecdc v\u00e0 s\u1ef1 ra \u0111\u1eddi c\u1ee7a m\u00e1y t\u00ednh \u0111\u00e3 th\u1ef1c s\u1ef1 bi\u1ebfn \u0111\u1ed5i ho\u00e0n to\u00e0n c\u00e1c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t. C\u1ea3m bi\u1ebfn l\u00e0 \u201c\u0111\u00f4i m\u1eaft\u201d c\u1ee7a nh\u00e0 m\u00e1y hi\u1ec7n \u0111\u1ea1i ng\u00e0y nay v\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i c\u1ea3m bi\u1ebfn \u0111a n\u0103ng nh\u1ea5t ch\u00ednh l\u00e0 c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n. Nh\u1eefng c\u1ea3m bi\u1ebfn quang h\u1ecdc n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu trong t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 ch\u00fang mang l\u1ea1i s\u1ef1 thu\u1eadn ti\u1ec7n trong vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n c\u00f9ng \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 ph\u1ee9c t\u1ea1p. \u0110\u1ec3 l\u1ef1a ch\u1ecdn c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n ph\u00f9 h\u1ee3p nh\u1ea5t cho m\u1ed9t \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i n\u1eafm r\u00f5 c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn quang \u0111i\u1ec7n hi\u1ec7n c\u00f3 tr\u00ean th\u1ecb tr\u01b0\u1eddng v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u00e0y.<\/p>","protected":false},"author":4,"featured_media":9880,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Unraveling the Photoelectric Sensor Working Principle","_seopress_titles_desc":"Learn the photoelectric sensor working principle and how it functions in various applications. Dive into our complete guide for in-depth insights!","_seopress_robots_index":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-9885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9885","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/comments?post=9885"}],"version-history":[{"count":1,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9885\/revisions"}],"predecessor-version":[{"id":9888,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9885\/revisions\/9888"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media\/9880"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media?parent=9885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/categories?post=9885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/tags?post=9885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
C\u1ea5u t\u1ea1o c\u1ee7a m\u1ed9t c\u1ea3m bi\u1ebfn: B\u1ed9 ph\u00e1t, b\u1ed9 thu v\u00e0 m\u1ea1ch \u0111i\u1ec7n b\u00ean trong<\/h2>\n\n\n\n
![\"Nguy\u00ean](\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/photoelectric-sensor-working-principle1.webp\")
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N\u1eafm v\u1eefng ba ch\u1ebf \u0111\u1ed9 c\u1ea3m bi\u1ebfn ti\u00eau chu\u1ea9n v\u00e0 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u00fang<\/h2>\n\n\n\n
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T\u00ednh n\u0103ng<\/td> C\u1ea3m bi\u1ebfn xuy\u00ean ch\u00f9m (\u0111\u1ed1i di\u1ec7n)<\/td> Lo\u1ea1i ph\u1ea3n quang<\/td> Lo\u1ea1i ph\u1ea3n x\u1ea1 khu\u1ebfch t\u00e1n<\/td><\/tr> T\u1ea7m ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a<\/td> R\u1ea5t cao (l\u00ean \u0111\u1ebfn 100m+)<\/td> Trung b\u00ecnh (t\u1ed1i \u0111a 15 m)<\/td> Ng\u1eafn (t\u1ed1i \u0111a 2m)<\/td><\/tr> Lo\u1ea1i m\u1ee5c ti\u00eau<\/td> B\u1ea5t k\u1ef3 v\u1eadt th\u1ec3 n\u00e0o kh\u00f4ng trong su\u1ed1t<\/td> Kh\u00f4ng b\u00f3ng (m\u1ee5c ti\u00eau ti\u00eau chu\u1ea9n)<\/td> C\u00e1c b\u1ec1 m\u1eb7t c\u00f3 \u0111\u1ed9 ph\u1ea3n x\u1ea1 cao<\/td><\/tr> C\u00e0i \u0111\u1eb7t<\/td> Ph\u1ee9c h\u1ee3p (Y\u00eau c\u1ea7u 2 \u0111\u01a1n v\u1ecb)<\/td> Trung b\u00ecnh (1 \u0111\u01a1n v\u1ecb + g\u01b0\u01a1ng ph\u1ea3n x\u1ea1)<\/td> \u0110\u01a1n gi\u1ea3n (Ch\u1ec9 m\u1ed9t \u0111\u01a1n v\u1ecb)<\/td><\/tr> \u0110\u1ed9 tin c\u1eady<\/td> Xu\u1ea5t s\u1eafc (Ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t)<\/td> T\u1ed1t (Ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p)<\/td> Trung b\u00ecnh (Nh\u1ea1y c\u1ea3m v\u1edbi m\u00e0u s\u1eafc)<\/td><\/tr> C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/td> V\u1eadn chuy\u1ec3n \u0111\u01b0\u1eddng d\u00e0i, c\u00e1c tr\u1ea1m ki\u1ec3m so\u00e1t an ninh v\u00e0 m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng kh\u1eafc nghi\u1ec7t (v\u00ed d\u1ee5: tr\u1ea1m r\u1eeda xe).<\/td> C\u00e1c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ed1c \u0111\u1ed9 cao, h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i b\u1eb1ng b\u0103ng t\u1ea3i v\u00e0 vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng m\u1ee5c ti\u00eau nh\u01b0 pallet.<\/td> C\u00e1c thi\u1ebft b\u1ecb \u0111\u1ebfm chi ti\u1ebft nh\u1ecf, \u0111\u1ecbnh v\u1ecb c\u00e1nh tay robot v\u00e0 nh\u1eadn di\u1ec7n m\u00e0u s\u1eafc d\u00f9ng trong \u0111\u00f3ng g\u00f3i.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n C\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn: Ch\u1ee9c n\u0103ng kh\u1eed nhi\u1ec5u n\u1ec1n v\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 ph\u00e1t hi\u1ec7n chuy\u00ean d\u1ee5ng<\/h2>\n\n\n\n
![\"Nguy\u00ean](\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/photoelectric-sensor-working-principle2.webp\")
<\/figure>\n\n\n\nC\u00e1c y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn quan tr\u1ecdng: V\u1eadt li\u1ec7u m\u1ee5c ti\u00eau, kho\u1ea3ng c\u00e1ch v\u00e0 m\u00f4i tr\u01b0\u1eddng<\/h2>\n\n\n\n
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![\"Nguy\u00ean](\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/photoelectric-sensor-working-principle3.webp\")
<\/figure>\n\n\n\nGi\u1ea3i m\u00e3 logic NPN, PNP v\u00e0 logic \u201cLight-on\u201d so v\u1edbi \u201cDark-on\u201d<\/h2>\n\n\n\n
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H\u01b0\u1edbng d\u1eabn kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1: Gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p li\u00ean quan \u0111\u1ebfn c\u1ea3nh b\u00e1o sai<\/h2>\n\n\n\n
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T\u01b0\u01a1ng lai c\u1ee7a c\u00f4ng ngh\u1ec7 c\u1ea3m bi\u1ebfn: IO-Link v\u00e0 ch\u1ea9n \u0111o\u00e1n th\u00f4ng minh<\/h2>\n\n\n\n
![\"Nguy\u00ean](\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/photoelectric-sensor-working-principle4.webp\")
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