{"id":230908,"date":"2014-09-14T22:00:00","date_gmt":"2014-09-14T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/matrice-ir-economique-a-large-champ-de-vision\/"},"modified":"2014-09-14T22:00:00","modified_gmt":"2014-09-14T22:00:00","slug":"matrice-ir-economique-a-large-champ-de-vision","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/matrice-ir-economique-a-large-champ-de-vision\/","title":{"rendered":"Matrice IR \u00e9conomique \u00e0 large champ de vision"},"content":{"rendered":"<p>Les matrices infrarouges &agrave; bas co&ucirc;t sont en train de r&eacute;volutionner de nombreuses applications, dans un large &eacute;ventail de secteurs industriels, comme la s&eacute;curit&eacute;, l&rsquo;automobile, l&rsquo;automatisation de b&acirc;timents ou l&rsquo;&eacute;lectronique grand-public. Gr&acirc;ce &agrave; ces dispositifs, on peut obtenir des donn&eacute;es d&rsquo;image et des signatures thermiques pr&eacute;cises d&rsquo;objets statiques ou dynamiques.<br \/>\n&Eacute;talonn&eacute; en usine pour fonctionner sur une plage de temp&eacute;rature allant de -40 &deg;C &agrave; 85 &deg;C, cette matrice IR peut mesurer avec pr&eacute;cision des temp&eacute;ratures d&rsquo;objet entre -20 &deg;C et 300 &deg;C. L&rsquo;interfa&ccedil;age et le contr&ocirc;le se font par l&rsquo;interm&eacute;diaire de l&rsquo;interface num&eacute;rique I2C int&eacute;gr&eacute;e. La vitesse est programmable, avec une fr&eacute;quence d&rsquo;images allant de 0.5 Hz &agrave; 64 Hz. Chaque dispositif offre un niveau de bruit par rapport &agrave; sa vitesse remarquable, avec une diff&eacute;rence de temp&eacute;rature &eacute;quivalent bruit NETD de 0.25 K &agrave; 16 Hz.<br \/>\nLe champ de vision am&eacute;lior&eacute; permet &agrave; une seule matrice plac&eacute;e dans l&rsquo;habitacle d&rsquo;un v&eacute;hicule, de mesurer simultan&eacute;ment les profils de temp&eacute;rature du passager et du conducteur, s&rsquo;il est bien positionn&eacute; au milieu du tableau de bord. Cela signifie qu&rsquo;il est possible de r&eacute;aliser une commande de climatisation plus pertinente. Jusqu&rsquo;ici, pour r&eacute;aliser un syst&egrave;me de climatisation performant, il fallait monter un capteur IR sur un syst&egrave;me &agrave; balayage m&eacute;canique actionn&eacute; par un moteur pas-&agrave;-pas, pour explorer l&rsquo;ensemble de la zone cible &agrave; rafra&icirc;chir. Gr&acirc;ce au grand champ de vision de ce mod&egrave;le, un tel balayage m&eacute;canique n&rsquo;est plus n&eacute;cessaire, et un dispositif fixe unique est capable d&rsquo;obtenir directement une image thermique de l&rsquo;ensemble de la zone. Les baisses de co&ucirc;t, l&rsquo;acc&eacute;l&eacute;ration de mesure et la r&eacute;duction de complexit&eacute; globale permis par cette matrice IR, ouvrent de nouvelles opportunit&eacute;s et de nouveaux march&eacute;s aux concepteurs de syst&egrave;mes de climatisation.<br \/>\nPr&eacute;sent&eacute;e en bo&icirc;tier m&eacute;tallique TO39 compact, cette matrice existe en trois champs de vision diff&eacute;rents de 60 x 15 degr&eacute;s, 40 x 10 degr&eacute;s et 100 x 25 degr&eacute;s.<\/p>\n<\/p>\n<p><a title=\"www.melexis.com\/MLX90621-823\" target=\"_blank\" href=\"http:\/\/www.melexis.com\/Infrared-Thermometer-Sensors\/Infrared-Thermometer-Sensors\/MLX90621-823.aspx\" rel=\"noopener\">www.melexis.com\/MLX90621-823<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gr\u00e2ce \u00e0 sa configuration 16 x 4 pixels, la matrice infrarouge (IR) MLX90621 de Melexis offre un champ de vision jusqu\u2019\u00e0 100 x 25 degr\u00e9s, sensiblement plus grand que celui de la g\u00e9n\u00e9ration pr\u00e9c\u00e9dente, pour un co\u00fbt r\u00e9duit. Elle propose aussi des mesures 4 fois plus rapides qui se traduisent par une r\u00e9duction spectaculaire des niveaux de bruit pr\u00e9sents.<\/p>\n","protected":false},"author":22,"featured_media":230909,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-230908","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Matrice IR \u00e9conomique \u00e0 large champ de vision ...<\/title>\n<meta name=\"description\" content=\"Gr\u00e2ce \u00e0 sa configuration 16 x 4 pixels, la matrice infrarouge (IR) MLX90621 de Melexis offre un champ de vision jusqu\u2019\u00e0 100 x 25 degr\u00e9s, sensiblement...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/230908\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Matrice IR \u00e9conomique \u00e0 large champ de vision\" \/>\n<meta property=\"og:description\" content=\"Gr\u00e2ce \u00e0 sa configuration 16 x 4 pixels, la matrice infrarouge (IR) MLX90621 de Melexis offre un champ de vision jusqu\u2019\u00e0 100 x 25 degr\u00e9s, sensiblement plus grand que celui de la g\u00e9n\u00e9ration pr\u00e9c\u00e9dente, pour un co\u00fbt r\u00e9duit. 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