{"id":14167,"date":"2023-09-24T17:10:56","date_gmt":"2023-09-24T17:10:56","guid":{"rendered":"https:\/\/www.rayzeek.com\/?p=14167"},"modified":"2023-12-26T08:44:55","modified_gmt":"2023-12-26T08:44:55","slug":"what-is-passive-infrared-pir","status":"publish","type":"post","link":"https:\/\/www.rayzeek.com\/pt\/glossario\/o-que-e-o-infravermelho-passivo-pir","title":{"rendered":"O que s\u00e3o infravermelhos passivos (PIR)"},"content":{"rendered":"

O que s\u00e3o infravermelhos passivos (PIR)<\/h2>

O infravermelho passivo (PIR) \u00e9 um tipo de sensor de movimento que detecta varia\u00e7\u00f5es na radia\u00e7\u00e3o infravermelha. Os sensores PIR s\u00e3o normalmente utilizados para detetar a presen\u00e7a de pessoas ou animais atrav\u00e9s da dete\u00e7\u00e3o do calor emitido pelos seus corpos. Ao contr\u00e1rio dos sensores activos, os sensores PIR n\u00e3o emitem quaisquer sinais, mas recebem e analisam passivamente a radia\u00e7\u00e3o infravermelha na sua \u00e1rea de cobertura.<\/p>

Inspire-se nos portf\u00f3lios de sensores de movimento Rayzeek.<\/h3>

N\u00e3o encontra o que pretende? N\u00e3o se preocupe. H\u00e1 sempre formas alternativas de resolver os seus problemas. Talvez um dos nossos portef\u00f3lios possa ajudar.<\/p>

Sensores de movimento PIR<\/p><\/a><\/div><\/div>

Interruptores com sensor de movimento<\/p><\/a><\/div><\/div>

Sensores de ocupa\u00e7\u00e3o<\/p><\/a><\/div><\/div>

Sensor de movimento do ar condicionado<\/p><\/a><\/div><\/div>

Fitas de luz com sensor de movimento<\/p><\/a><\/div><\/div>

Sensores de movimento DC de baixa tens\u00e3o\/Dimmers<\/p><\/a><\/div><\/div>

Kits de sensores de movimento sem fios<\/p><\/a><\/div><\/div><\/div><\/div>

Um sensor de movimento PIR \u00e9 composto por dois componentes principais: um sensor piroel\u00e9trico e uma lente de Fresnel. O sensor piroel\u00e9trico mede as altera\u00e7\u00f5es na radia\u00e7\u00e3o infravermelha que recebe e converte-as em sinais el\u00e9ctricos. A lente de Fresnel, composta por an\u00e9is conc\u00eantricos, ajuda a amplificar a radia\u00e7\u00e3o infravermelha antes de esta chegar ao sensor piroel\u00e9trico, permitindo uma dete\u00e7\u00e3o mais precisa.<\/p>

Quando um sensor de movimento PIR \u00e9 ativado, efectua uma calibra\u00e7\u00e3o para estabelecer os n\u00edveis de base da radia\u00e7\u00e3o infravermelha no seu ambiente. Em seguida, monitoriza continuamente a exist\u00eancia de varia\u00e7\u00f5es significativas nos n\u00edveis de radia\u00e7\u00e3o, indicando a presen\u00e7a de movimento. Se for detectada uma altera\u00e7\u00e3o significativa, o sensor desencadeia uma a\u00e7\u00e3o espec\u00edfica, como acender as luzes ou ativar um alarme.<\/p>

Os sensores PIR s\u00e3o normalmente encontrados em sistemas de ilumina\u00e7\u00e3o autom\u00e1ticos, onde asseguram que as luzes s\u00f3 s\u00e3o activadas quando necess\u00e1rio, poupando assim energia. Os sensores PIR tamb\u00e9m s\u00e3o utilizados em sistemas de abertura autom\u00e1tica, como portas e barreiras, para detetar movimento e acionar o seu funcionamento. Nos sistemas de seguran\u00e7a, os sensores PIR desempenham um papel crucial na dete\u00e7\u00e3o da presen\u00e7a de intrusos e na ativa\u00e7\u00e3o de alarmes ou dispositivos de grava\u00e7\u00e3o.<\/p>

Procura solu\u00e7\u00f5es de poupan\u00e7a de energia activadas por movimento?<\/h3>

Contacte-nos para obter sensores de movimento PIR completos, produtos de poupan\u00e7a de energia activados por movimento, interruptores com sensor de movimento e solu\u00e7\u00f5es comerciais de Ocupa\u00e7\u00e3o\/Vazio.<\/p>

Enviar um e-mail<\/p><\/a><\/div><\/div>

Formul\u00e1rio de contacto<\/p><\/a><\/div><\/div>

Conversar online<\/p><\/a><\/div><\/div><\/div><\/div>

Os sensores PIR devem ser colocados em \u00e1reas sem obst\u00e1culos que possam impedir o seu funcionamento, e o \u00e2ngulo e a dist\u00e2ncia devem ser ajustados para obter a m\u00e1xima cobertura. Al\u00e9m disso, as defini\u00e7\u00f5es, como o n\u00famero de impulsos emitidos pelo sensor e a dist\u00e2ncia de dete\u00e7\u00e3o, podem ser ajustadas de acordo com requisitos espec\u00edficos.<\/p>","protected":false},"excerpt":{"rendered":"

O infravermelho passivo (PIR) \u00e9 um tipo de sensor de movimento que detecta varia\u00e7\u00f5es na radia\u00e7\u00e3o infravermelha. Os sensores PIR s\u00e3o normalmente utilizados para detetar a presen\u00e7a de pessoas ou animais atrav\u00e9s da dete\u00e7\u00e3o do calor emitido pelos seus corpos.<\/p>","protected":false},"author":4,"featured_media":12865,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"PIR motion sensor\", \"idxall\": 1, \"keywordtitlesimi\": 0.964764279127121, \"keywordslugsimi\": 1.05, \"paratitlesimi\": 0.8760966539382935, \"paraslugsimi\": 0.8481415539979935, \"slug\": \"pir-motion-sensor\", \"title\": \"What is a PIR Motion Sensor and How Does it Work?\", \"id\": 14847}, {\"keyword\": \"PIR sensors\", \"idxall\": 2, \"keywordtitlesimi\": 0.8723232865333558, \"keywordslugsimi\": 0.9420589864253999, \"paratitlesimi\": 0.8502745091915132, \"paraslugsimi\": 0.8416541934013367, \"slug\": \"pir-motion-sensor\", \"title\": 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