{"id":5904,"date":"2021-11-20T10:09:21","date_gmt":"2021-11-20T03:09:21","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5904"},"modified":"2021-11-20T13:24:12","modified_gmt":"2021-11-20T06:24:12","slug":"vi-sao-co-the-dieu-khien-mot-so-do-dien-gia-dung-tu-xa-bang-cai-dieu-khien","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-co-the-dieu-khien-mot-so-do-dien-gia-dung-tu-xa-bang-cai-dieu-khien\/","title":{"rendered":"V\u00ec sao c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n m\u1ed9t s\u1ed1 \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng t\u1eeb xa b\u1eb1ng c\u00e1i \u0111i\u1ec1u khi\u1ec3n?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">M\u1ea5y n\u0103m g\u1ea7n \u0111\u00e2y, \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng c\u0169ng \u0111i theo h\u01b0\u1edbng tr\u00ed tu\u1ec7 ho\u00e1 v\u00e0 \u0111i\u1ec1u khi\u1ec3n ho\u00e1 t\u1eeb xa. K\u0129 thu\u1eadt \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ng\u00e0y c\u00e0ng nhi\u1ec1u v\u00e0o \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng. \u0110i\u1ec1u khi\u1ec3n s\u1ef1 t\u1eaft n\u1ed1i ngu\u1ed3n \u0111i\u1ec7n l\u00e0 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t c\u1ee7a k\u0129 thu\u1eadt \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa trong \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 th\u1ec3 d\u00f9ng s\u00f3ng \u00e2m, s\u00f3ng si\u00eau \u00e2m, s\u00f3ng v\u00f4 tuy\u1ebfn \u0111i\u1ec7n v\u00e0 tia h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n s\u1ef1 t\u1eaft n\u1ed1i ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng t\u1eeb xa, \u1ee9ng d\u1ee5ng nhi\u1ec1u nh\u1ea5t l\u00e0 tia h\u1ed3ng ngo\u1ea1i. \u0110\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i s\u00f3ng \u0111i\u1ec7n t\u1eeb m\u1eaft th\u01b0\u1eddng kh\u00f4ng tr\u00f4ng th\u1ea5y \u0111\u01b0\u1ee3c, b\u01b0\u1edbc s\u00f3ng c\u1ee7a n\u00f3 n\u1eb1m gi\u1eefa s\u00f3ng v\u00f4 tuy\u1ebfn \u0111i\u1ec7n v\u00e0 s\u00f3ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y, kho\u1ea3ng 0,75 ~ 1000 micron.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng t\u1eafc \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa b\u1eb1ng tia h\u1ed3ng ngo\u1ea1i do hai b\u1ed9 ph\u1eadn ph\u00e1t v\u00e0 thu tia h\u1ed3ng ngo\u1ea1i h\u1ee3p th\u00e0nh. B\u1ed9 ph\u1eadn ph\u00e1t ch\u00ednh l\u00e0 c\u00e1i \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa ch\u00fang ta c\u1ea7m trong tay. N\u00f3 ch\u1ee7 y\u1ebfu g\u1ed3m c\u00f3 b\u1ed9 \u0111i\u1ec1u ch\u1ebf v\u00e0 b\u00f3ng ph\u00e1t x\u1ea1 tia h\u1ed3ng ngo\u1ea1i, c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng t\u1eeb xa trong ph\u1ea1m vi 10 m\u00e9t. B\u00f3ng ph\u00e1t x\u1ea1 tia h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 ph\u00e1t ra tia h\u1ed3ng ngo\u1ea1i c\u00f3 b\u01b0\u1edbc s\u00f3ng nh\u1ea5t \u0111\u1ecbnh. B\u1ed9 \u0111i\u1ec1u ch\u1ebf c\u00f3 th\u1ec3 &#8220;ph\u1ee7&#8221; t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n t\u1ea7n s\u1ed1 th\u1ea5p \u0111i\u1ec1u khi\u1ec3n s\u1ef1 t\u1eaft n\u1ed1i l\u00ean tia h\u1ed3ng ngo\u1ea1i, cho n\u00ean tia h\u1ed3ng ngo\u1ea1i t\u1eeb b\u1ed9 ph\u1eadn ph\u00e1t ph\u00e1t ra c\u00f3 ch\u1ee9a c\u1ea3 t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 ph\u1eadn thu c\u1ee7a c\u00f4ng t\u1eafc\u0111i\u1ec1ukhi\u1ec3n t\u1eeb xa b\u1eb1ng tia h\u1ed3ng ngo\u1ea1i \u0111\u01b0\u1ee3c l\u1eafp tr\u00ean t\u1ea5m m\u1eb7t tr\u01b0\u1edbc c\u1ee7a \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng, b\u00ean trong n\u00f3 c\u00f3 b\u00f3ng thu, m\u1ea1ch \u0111i\u1ec7n ch\u1ed1ng nhi\u1ec5u, b\u1ed9 gi\u1ea3i \u0111i\u1ec1u ch\u1ebf, c\u00e1i \u0111i\u1ec1u khi\u1ec3n c\u00f4ng t\u1eafc v.v. B\u00f3ng thu l\u00e0 m\u1ed9t lo\u1ea1i b\u00f3ng ba c\u1ef1c nh\u1ea1y s\u00e1ng silic, th\u00f4ng qua hi\u1ec7u \u1ee9ng quang \u0111i\u1ec7n, c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i tia h\u1ed3ng ngo\u1ea1i chi\u1ebfu l\u00ean n\u00f3 th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. M\u1ea1ch \u0111i\u1ec7n ch\u1ed1ng nhi\u1ec5u c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t v\u00e0 lo\u1ea1i b\u1ecf t\u00edn hi\u1ec7u nhi\u1ec5u h\u1ed3ng ngo\u1ea1i trong m\u00f4i tr\u01b0\u1eddng xung quanh, b\u1ed9 gi\u1ea3i \u0111i\u1ec1u ch\u1ebf c\u00f3 th\u1ec3 &#8220;b\u1ed1c d\u1ee1&#8221; t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n t\u1ea7n s\u1ed1 th\u1ea5p &#8220;ph\u1ee7&#8221; l\u00ean tr\u00ean tia h\u1ed3ng ngo\u1ea1i xu\u1ed1ng, \u0111\u01b0a v\u00e0o c\u00e1i \u0111i\u1ec1u khi\u1ec3n c\u00f4ng t\u1eafc, l\u00e0m cho c\u00f4ng t\u1eafc ngu\u1ed3n \u0111i\u1ec7n n\u1ed1i th\u00f4ng ho\u1eb7c ng\u1eaft r\u1eddi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 th\u1ec3 v\u00ed tia h\u1ed3ng ngo\u1ea1i nh\u01b0 l\u00e0 chi\u1ebfc m\u00e1y bay, c\u00f2n t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n t\u1ea7n s\u1ed1 th\u1ea5p nh\u01b0 l\u00e0 h\u00e0nh kh\u00e1ch. Tia h\u1ed3ng ngo\u1ea1i l\u00e0m vai tr\u00f2 chuy\u00ean ch\u1edf t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n t\u1eeb b\u1ed9 ph\u1eadn ph\u00e1t \u0111\u1ebfn b\u1ed9 ph\u1eadn thu, nh\u01b0m\u00e1y bay ch\u1edf h\u00e0nh kh\u00e1ch t\u1eeb ch\u1ed7 A \u0111\u1ebfn ch\u1ed7 B v\u1eady. C\u00e1i th\u1ef1c s\u1ef1 c\u00f3 t\u00e1c d\u1ee5ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh l\u00e0 t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n t\u1ea7n s\u1ed1 th\u1ea5p &#8220;ph\u1ee7&#8221; l\u00ean tr\u00ean tia h\u1ed3ng ngo\u1ea1i. Tia h\u1ed3ng ngo\u1ea1i ch\u1eb3ng qua ch\u1ec9 l\u00e0 c\u00f4ng c\u1ee5 v\u1eadn t\u1ea3i t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n m\u00e0 th\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng t\u1eafc \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa ch\u1eb3ng nh\u1eefng c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n s\u1ef1 t\u1eaft n\u1ed1i ngu\u1ed3n \u0111i\u1ec7n t\u1eeb xa, c\u0169ng c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 ch\u1ecdn k\u00eanh, \u0111i\u1ec1u ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng l\u1edbn nh\u1ecf cho tivi, \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 qu\u1ea1t m\u00e1y, \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u00e1y \u0111i\u1ec1u ho\u00e0 kh\u00f4ng kh\u00ed v.v.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a: C\u00e1i \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa; Tia h\u1ed3ng ngo\u1ea1i; C\u00e1i \u0111i\u1ec1u ch\u1ebf; C\u00e1i kh\u1eed<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>M\u1ea5y n\u0103m g\u1ea7n \u0111\u00e2y, \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng c\u0169ng \u0111i theo h\u01b0\u1edbng tr\u00ed tu\u1ec7 ho\u00e1 v\u00e0 \u0111i\u1ec1u khi\u1ec3n ho\u00e1 t\u1eeb xa. K\u0129 thu\u1eadt \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ng\u00e0y c\u00e0ng nhi\u1ec1u v\u00e0o \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng. \u0110i\u1ec1u khi\u1ec3n s\u1ef1 t\u1eaft n\u1ed1i ngu\u1ed3n \u0111i\u1ec7n l\u00e0 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t c\u1ee7a k\u0129 thu\u1eadt \u0111i\u1ec1u [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-5904","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5904","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=5904"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5904\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5904"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}