{"id":1470,"date":"2011-10-18T23:21:05","date_gmt":"2011-10-18T16:21:05","guid":{"rendered":"http:\/\/banbientan.wordpress.com\/?p=1470"},"modified":"2011-10-18T23:21:05","modified_gmt":"2011-10-18T16:21:05","slug":"nguyen-t%e1%ba%afc-xac-d%e1%bb%8bnh-kho%e1%ba%a3ng-cach-phat-hi%e1%bb%87n-c%e1%bb%a7a-c%e1%ba%a3m-bi%e1%ba%bfn-quang","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=1470","title":{"rendered":"Nguy\u00ean t\u1eafc x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch ph\u00e1t hi\u1ec7n c\u1ee7a c\u1ea3m bi\u1ebfn quang ?"},"content":{"rendered":"<div>\n<strong>C\u00e2u h\u1ecfi<\/strong><br \/>\nNguy\u00ean t\u1eafc x\u00e1c \u0111\u1ecbnh\u00a0kho\u1ea3ng c\u00e1ch ph\u00e1t hi\u1ec7n c\u1ee7a C\u1ea3m bi\u1ebfn quang ?<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.omron-ap.com\/product_info\/E3G-L1\/e3gl1l3_pic05.jpg\" alt=\"Application Example: OK and NG condition\" width=\"333\" height=\"163\" border=\"0\" \/><br \/>\n<strong>C\u00e2u tr\u1ea3 l\u1eddi<\/strong>\n<\/div>\n<div>\n<div>\n<div>\nPSD (position sensitive device &#8211; thi\u1ebft b\u1ecb nh\u1ea3y c\u1ea3m v\u1ecb tr\u00ed)\u00a0v\u00e0 photodiode k\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u1eadn \u00a0s\u00e1ng \u00a0t\u1eeb ph\u1ea7n t\u1eed v\u00e0 kho\u1ea3ng c\u00e1ch t\u1edbi \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n v\u1ecb tr\u00ed ngu\u1ed3n s\u00e1ng ngay \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 \u00e1nh s\u00e1ng nh\u1eadn \u0111\u01b0\u1ee3c.<br \/>\n<strong>Khi c\u00e1c y\u1ebfu t\u1ed1 ti\u1ebfp nh\u1eadn \u00e1nh s\u00e1ng l\u00e0 PSD<\/strong>\n<\/div>\n<\/div>\n<div>\n<div>\nC\u00e1c tia t\u1eeb c\u00e1c y\u1ebfu t\u1ed1 ph\u00e1t s\u00e1ng (\u00a0LED)\u00a0\u0111\u01b0\u1ee3c kh\u00fac x\u1ea1 qua \u1ed1ng k\u00ednh ph\u00e1t ra \u00e1nh s\u00e1ng,\u00a0v\u00e0 chi\u1ebfu x\u1ea1 b\u1ec1 m\u1eb7t c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng.\u00a0V\u00e0,m\u1ed9t ph\u1ea7n c\u1ee7a tia khu\u1ebfch t\u00e1n ph\u1ea3n x\u1ea1 t\u1ea1i ch\u1ed7 PSD qua m\u1ed9t th\u1ea5u k\u00ednh nh\u1eadn \u00e1nh s\u00e1ng.\n<\/div>\n<\/div>\n<div>\n<div>\nTia kh\u00fac x\u1ea1 chi\u1ebfu t\u1edbi \u0111i\u1ec3m &#8220;a&#8221; c\u1ee7a thi\u1ebft b\u1ecb nh\u1ea3y c\u1ea3m v\u1ecb tr\u00ed khi \u0111\u00f3 v\u1ecb tr\u00ed c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng &#8221;\u00a0A\u00a0&#8221;\u00a0l\u00e0 kho\u1ea3ng c\u00e1ch ng\u1eafn v\u00e0 Tia kh\u00fac x\u1ea1 chi\u1ebfu t\u1edbi \u0111i\u1ec3m\u00a0&#8221;\u00a0b &#8221;\u00a0khi \u0111\u00f3 v\u1ecb tr\u00ed \u0111\u1ed1i t\u01b0\u1ee3ng &#8221;\u00a0B\u00a0&#8221;\u00a0l\u00e0 kho\u1ea3ng c\u00e1ch d\u00e0i.\n<\/div>\n<\/div>\n<div>\n<div>\n<div><img decoding=\"async\" src=\"http:\/\/www.ia.omron.com\/support\/faq\/answer\/include\/faq00320\/img\/FAQ00320-1.jpg\" alt=\"\" \/><\/div>\n<\/div>\n<\/div>\n<div>\n<div>\nV\u00ec v\u1eady\u00a0, n\u1ebfu v\u1ecb tr\u00ed t\u1ea1i ch\u1ed7\u00a0( \u0111i\u1ec3m &#8221; a &#8220;v\u00e0 \u0111i\u1ec3m &#8220;b\u00a0&#8221; ) PSD ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c, \u0111i\u1ec3m b\u1eadt v\u00e0 \u0111i\u1ec3m t\u1eaft \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp tr\u00ean PSD\u00a0, v\u00e0 n\u00f3 c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 li\u1ec7u c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng l\u00e0 g\u1ea7n hay xa so v\u1edbi\u00a0m\u1ed9t kho\u1ea3ng c\u00e1ch thi\u1ebft l\u1eadp.\u00a0\u0110\u00e2y l\u00e0 m\u1ed9t nguy\u00ean t\u1eafc c\u1ee7a ph\u00e9p \u0111o tam gi\u00e1c quang h\u1ecdc .<br \/>\nE3G-\u00a0L \u0111\u1ec3 s\u1eed d\u1ee5ng nguy\u00ean t\u1eafc n\u00e0y.\n<\/div>\n<\/div>\n<div>\n<div>\n<strong>Khi c\u00e1c y\u1ebfu t\u1ed1 \u00e1nh s\u00e1ng nh\u1eadn \u0111\u01b0\u1ee3c l\u00e0 hai photodiode<br \/>\n<\/strong>\n<\/div>\n<\/div>\n<div>\n<div>\nC\u00e1c tia t\u1eeb c\u00e1c y\u1ebfu t\u1ed1 ph\u00e1t s\u00e1ng (\u00a0LED)\u00a0\u0111\u01b0\u1ee3c kh\u00fac x\u1ea1 qua \u1ed1ng k\u00ednh ph\u00e1t ra \u00e1nh s\u00e1ng,\u00a0v\u00e0 chi\u1ebfu x\u1ea1 b\u1ec1 m\u1eb7t c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea3m bi\u1ebfn\u00a0,\u00a0m\u1ed9t ph\u1ea7n c\u1ee7a tia khu\u1ebfch t\u00e1n ph\u1ea3n x\u1ea1 \u00e1nh \u0111\u1ebfn \u0111i\u1ec3m tr\u00ean photodiode k\u00e9p th\u00f4ng qua m\u1ed9t \u1ed1ng k\u00ednh nh\u1eadn \u00e1nh s\u00e1ng .\n<\/div>\n<\/div>\n<div>\n<div>\nH\u1ecd l\u00e0 E3Z-\u00a0LS v\u00e0 c\u00e1c E3S-\u00a0CL \u0111\u1ec3 s\u1eed d\u1ee5ng nguy\u00ean t\u1eafc n\u00e0y.\n<\/div>\n<\/div>\n<div>\n<div>\n<div><img decoding=\"async\" src=\"http:\/\/www.ia.omron.com\/support\/faq\/answer\/include\/faq00320\/img\/FAQ00320-2.jpg\" alt=\"\" \/><\/div>\n<\/div>\n<\/div>\n<div>\n<div>\nKh\u00f4ng \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng n\u1ec1n v\u00e0 m\u00e0u s\u1eafc ho\u1eb7c b\u1ea5t k\u1ec3 s\u1ed1 l\u01b0\u1ee3ng \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 \u0111\u1ec3\u00a0thi\u1ebft\u00a0l\u1eadp\u00a0kho\u1ea3ng c\u00e1ch\u00a0ph\u00e1t hi\u1ec7n c\u00e1c v\u1ecb tr\u00ed ti\u1ebfp nh\u1eadn \u00e1nh s\u00e1ng c\u1ee7a \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1\u00a0, v\u00e0 ph\u00e1t hi\u1ec7n \u1ed5n \u0111\u1ecbnh l\u00e0 c\u00f3 th\u1ec3 .\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e2u h\u1ecfi Nguy\u00ean t\u1eafc x\u00e1c \u0111\u1ecbnh\u00a0kho\u1ea3ng c\u00e1ch ph\u00e1t hi\u1ec7n c\u1ee7a C\u1ea3m bi\u1ebfn quang ? C\u00e2u tr\u1ea3 l\u1eddi PSD (position sensitive device &#8211; thi\u1ebft b\u1ecb nh\u1ea3y c\u1ea3m v\u1ecb tr\u00ed)\u00a0v\u00e0 photodiode k\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u1eadn \u00a0s\u00e1ng \u00a0t\u1eeb ph\u1ea7n t\u1eed v\u00e0 kho\u1ea3ng c\u00e1ch t\u1edbi \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n v\u1ecb [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":17885,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9836],"tags":[9839,9840],"class_list":["post-1470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hi-dap-cm-bin-quang","tag-cm-bin-v-tri","tag-cm-bin-xac-dnh-v-tri"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/1470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1470"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/1470\/revisions"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}