{"id":226898,"date":"2013-04-21T22:00:00","date_gmt":"2013-04-21T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/capteurs-de-luminosite-numerique-a-ultra-haute-sensibilite\/"},"modified":"2013-04-21T22:00:00","modified_gmt":"2013-04-21T22:00:00","slug":"capteurs-de-luminosite-numerique-a-ultra-haute-sensibilite","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/capteurs-de-luminosite-numerique-a-ultra-haute-sensibilite\/","title":{"rendered":"Capteurs de luminosit\u00e9 num\u00e9rique \u00e0 ultra haute sensibilit\u00e9"},"content":{"rendered":"<p>Avec l&rsquo;introduction de cette famille de capteurs, les concepteurs ont maintenant &agrave; leur disposition une bien plus grande flexibilit&eacute; pour le d&eacute;veloppement de leurs syst&egrave;mes et le positionnement du capteur. Leur sensibilit&eacute; ultra &eacute;lev&eacute;e et leur large plage dynamique leur permet de fournir des mesures extr&ecirc;mement pr&eacute;cises et explicites m&ecirc;me en cas de tr&egrave;s faible niveau de luminosit&eacute;. Ceci donne au concepteur la libert&eacute; de placer le capteur &agrave; l&rsquo;&eacute;cart du faisceau direct de la lumi&egrave;re qu&rsquo;il mesure ou derri&egrave;re une plus grande vari&eacute;t&eacute; de verres fonc&eacute;s, voire tout autre mat&eacute;riau att&eacute;nuant la luminosit&eacute;. <br \/>\nPour les applications avec afficheurs, ce capteur utilise une architecture double-photodiode brevet&eacute;e d&eacute;livrant des mesures de lumi&egrave;re ambiante extr&ecirc;mement pr&eacute;cises m&ecirc;me lorsqu&rsquo;il est plac&eacute; derri&egrave;re un mat&eacute;riau att&eacute;nuant la lumi&egrave;re visible de 99%, tout en compensant automatiquement l&rsquo;augmentation de la composante infrarouge. Ceci donne une r&eacute;ponse photopique &agrave; l&rsquo;intensit&eacute; de la lumi&egrave;re ambiante &eacute;quivalente &agrave; celle de l&rsquo;&oelig;il humain. Sa sensibilit&eacute; ultra &eacute;lev&eacute;e r&eacute;duit ou &eacute;limine les probl&egrave;mes de conception inh&eacute;rents aux &eacute;crans de smartphones et de tablettes dans lesquels les variations d&rsquo;encre des verres peuvent causer des alt&eacute;rations couteuses dues &agrave; l&rsquo;utilisation de composants moins sensibles. Ces circuits peuvent &ecirc;tre plac&eacute;s plus profond&eacute;ment &agrave; l&rsquo;int&eacute;rieur du produit fini, ce qui repr&eacute;sente une solution plus efficace et plus &eacute;conomique, et donne &agrave; l&rsquo;ing&eacute;nieur plus de flexibilit&eacute; du point de vue de la conception. On obtient &eacute;galement une solution industrielle propre, sans soudures ne pr&eacute;sentant ni ouvertures ou espaces disgracieux dans le verre. <br \/>\nDe plus, cette famille de capteurs pr&eacute;sente une fonctionnalit&eacute; d&rsquo;interruption simplifiant et am&eacute;liorant l&rsquo;efficacit&eacute; du syst&egrave;me en &eacute;liminant le besoin de choisir un capteur pour une valeur d&rsquo;intensit&eacute; de luminosit&eacute; donn&eacute;e. L&rsquo;objectif principal de cette fonction est de d&eacute;tecter un changement significatif dans l&rsquo;intensit&eacute; de la lumi&egrave;re. Ce dernier peut &ecirc;tre d&eacute;fini par l&rsquo;utilisateur en terme d&rsquo;intensit&eacute; et de temps, ou de la persistance du changement de l&rsquo;intensit&eacute;. Ce composant est un capteur luminosit&eacute;-vers-num&eacute;rique totalement int&eacute;gr&eacute; avec double convertisseurs analogiques-num&eacute;riques et interface I2C. Il est &eacute;galement dot&eacute; d&rsquo;un gain et d&rsquo;un temps d&rsquo;int&eacute;gration programmables.<br \/>\nCette s&eacute;rie se d&eacute;cline en versions TSL25911FN &agrave; tension d&rsquo;entr&eacute;e Vbus de 3.3 V et TSL25913FN &agrave; Vbus de 1.8 V. Ils sont encapsul&eacute;s en petits bo&icirc;tiers CMS FN &agrave; 6 contacts. Des modules d&rsquo;&eacute;valuation &agrave; interface USB sont &eacute;galement propos&eacute;s avec logiciel et support de pilote.<\/p>\n<p><a title=\"www.ams.com\/Light-to-Digital\/TSL2591\" href=\"http:\/\/www.ams.com\/Light-to-Digital\/TSL2591\" target=\"_blank\" rel=\"noopener\">www.ams.com\/Light-to-Digital\/TSL2591<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u2019une sensibilit\u00e9 capable de mesurer de tr\u00e8s faibles lumi\u00e8res \u00e0 partir de 0.000377 lux et offrant une large gamme dynamique de 600M:1 jusqu\u2019\u00e0 88000 lux (soleil \u00e9clatant), la famille de capteurs num\u00e9riques de luminosit\u00e9 TSL2591 propos\u00e9e par AMS facilite la conception et offre aux ing\u00e9nieurs des niveaux de performance in\u00e9dits en mesure de luminosit\u00e9 ambiante, aussi bien pour les applications avec afficheurs que pour de nombreuses autres sans afficheurs.<\/p>\n","protected":false},"author":22,"featured_media":226899,"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-226898","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Capteurs de luminosit\u00e9 num\u00e9rique \u00e0 ultra haute sensibilit\u00e9 ...<\/title>\n<meta name=\"description\" content=\"D\u2019une sensibilit\u00e9 capable de mesurer de tr\u00e8s faibles lumi\u00e8res \u00e0 partir de 0.000377 lux et offrant une large gamme dynamique de 600M:1 jusqu\u2019\u00e0 88000...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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