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{"id":212338,"date":"2011-03-15T07:50:19","date_gmt":"2011-03-15T10:50:19","guid":{"rendered":"http:\/\/www.luissucupira.com.br\/?p=212338"},"modified":"2011-03-14T18:51:49","modified_gmt":"2011-03-14T21:51:49","slug":"como-funciona-o-radar-usado-nas-estradas-para-medir-a-velocidade-dos-carros","status":"publish","type":"post","link":"https:\/\/www.luissucupira.com.br\/como-funciona-o-radar-usado-nas-estradas-para-medir-a-velocidade-dos-carros\/","title":{"rendered":"Como funciona o radar usado nas estradas para medir a velocidade dos carros?"},"content":{"rendered":"
\"\"
Radar m\u00f3vel<\/figcaption><\/figure>\n

Existem tr\u00eas tipos. O mais comum \u00e9 um transmissor de r\u00e1dio que emite pulsos curtos e espa\u00e7ados de ondas em diferentes comprimentos. Qualquer objeto no percurso do feixe transmitido reflete os sinais, que ser\u00e3o captados, na volta, por um radiorreceptor.\u00a0Quanto maior o aumento na freq\u00fc\u00eancia das ondas, maior a velocidade do ve\u00edculo.<\/p>\n

Outro tipo, que tamb\u00e9m funciona por ondas de r\u00e1dio, emite sinais em uma \u00fanica freq\u00fc\u00eancia. Quando o carro passa, reflete esses sinais, possibilitando o c\u00e1lculo do tempo que ele demorou para passar e sua velocidade.<\/p>\n

O terceiro tipo utiliza princ\u00edpio semelhante, com feixes de laser no lugar das ondas de r\u00e1dio.<\/p>\n

Transmiss\u00e3o e recep\u00e7\u00e3o<\/strong>
\nTipo mais comum de radar mede o comprimento das ondas de r\u00e1dio refletidas pelo ve\u00edculo<\/p>\n

1. O radar emite ondas de r\u00e1dio e as capta de volta, refletidas pelo autom\u00f3vel. Se o carro passar devagar, as ondas retornam com pouca altera\u00e7\u00e3o<\/p>\n

2. Um carro em alta velocidade reflete as ondas com uma freq\u00fc\u00eancia bem maior que a emitida originalmente<\/p>\n","protected":false},"excerpt":{"rendered":"

Qualquer objeto no percurso do feixe transmitido reflete os sinais, que ser\u00e3o captados, na volta, por um radiorreceptor. <\/p>\n","protected":false},"author":22,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[23],"tags":[1146,1026,1173,454,1491,1174,896],"_links":{"self":[{"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/posts\/212338"}],"collection":[{"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/comments?post=212338"}],"version-history":[{"count":1,"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/posts\/212338\/revisions"}],"predecessor-version":[{"id":212339,"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/posts\/212338\/revisions\/212339"}],"wp:attachment":[{"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/media?parent=212338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/categories?post=212338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.luissucupira.com.br\/wp-json\/wp\/v2\/tags?post=212338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}