{"id":82656,"date":"2019-07-02T20:31:44","date_gmt":"2019-07-02T20:31:44","guid":{"rendered":"https:\/\/\/boostez-les-qualifications-anti-emi-des-ecrans-tactiles-automobiles\/"},"modified":"2019-07-02T20:31:44","modified_gmt":"2019-07-02T20:31:44","slug":"boostez-les-qualifications-anti-emi-des-ecrans-tactiles-automobiles","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/boostez-les-qualifications-anti-emi-des-ecrans-tactiles-automobiles\/","title":{"rendered":"Boostez les qualifications anti-EMI des \u00e9crans tactiles automobiles"},"content":{"rendered":"

La famille TD de contr\u00f4leurs tactiles int\u00e8gre une nouvelle m\u00e9thode d\u2019acquisition du signal mutuel diff\u00e9rentiel qui augmente significativement le rapport signal sur bruit (SNR, Signal-to-Noise Ratio). Elle permet d\u2019utiliser des lentilles de protection tr\u00e8s \u00e9paisses, en verre ou en plastique, et fonctionne \u00e9galement au travers de gants tr\u00e8s \u00e9pais, jusqu\u2019\u00e0 l\u2019\u00e9quivalent de 4,5 mm de polym\u00e9thacrylate de m\u00e9thyle (PMMA). <\/p>\n

Les composants MXT1067TD<\/a>, MXT1189TD<\/a> et MXT1665TD<\/a> ajoutent au portefeuille de Microchip diff\u00e9rentes versions disponibles au meilleur prix, con\u00e7ues pour les \u00e9crans tactiles de 9 \u00e0 13 pouces, et viennent compl\u00e9ter les composants MXT449TD, MXT641TD, MXT2113TD et MXT2912TD supportant des \u00e9crans tactiles jusqu\u2019\u00e0 20 pouces. Chaque composant prend en charge une partie de la demande croissante en fonctionnalit\u00e9s de s\u00e9curit\u00e9 fonctionnelle et est con\u00e7u conform\u00e9ment au standard automobile SPICE de niveau 3 et aux exigences de niveau B de la norme ISO 26262 relative aux niveaux d\u2019int\u00e9grit\u00e9 de s\u00e9curit\u00e9 automobile (ASIL). Tous les composants de la famille TD int\u00e8grent une capacit\u00e9 unique de correction de la forme d\u2019onde pour optimiser le niveau d\u2019\u00e9missions rayonn\u00e9es du contr\u00f4leur tactile gr\u00e2ce \u00e0 un outil d\u2019optimisation des perturbations \u00e9lectromagn\u00e9tiques (EMI). <\/p>\n

Travaillant en collaboration avec des experts produit dans les centres de conception d\u2019application du monde entier de Microchip, cet outil permet aux d\u00e9veloppeurs de saisir des limites RF d\u00e9finies par l\u2019utilisateur et d\u2019ajuster la forme de l\u2019onde de la salve transmise utilis\u00e9e pour l\u2019acquisition des donn\u00e9es du capteur tactile. La correction de forme d\u2019onde est effectu\u00e9e gr\u00e2ce aux param\u00e8tres du firmware d\u00e9riv\u00e9s de l\u2019outil et aide les d\u00e9veloppeurs \u00e0 positionner la fr\u00e9quence fondamentale des salves de fa\u00e7on \u00e0 fonctionner avec d\u2019autres applications embarqu\u00e9es, telles que les syst\u00e8mes d\u2019acc\u00e8s sans cl\u00e9. Les param\u00e8tres obtenus sont ensuite simplement ajout\u00e9s au fichier de configuration du maXTouch, qui personnalise ainsi les performances du contr\u00f4leur tactile en fonction du syst\u00e8me du client. Ce processus permet de gagner des heures, voire des semaines, de travail en chambre de test de compatibilit\u00e9 \u00e9lectromagn\u00e9tique (CEM), en \u00e9liminant les exp\u00e9riences successives avec diff\u00e9rentes configurations pour obtenir le niveau de performance EMI\/CEM souhait\u00e9.<\/p>\n

Un kit d\u2019\u00e9valuation est disponible pour chaque composant de la nouvelle famille des contr\u00f4leurs d\u2019\u00e9cran tactile maXTouch. Les r\u00e9f\u00e9rences des kits sont ATEVK-MXT1067TDAT-A (I2C), ATEVK-MXT1189TDAT-A (I2C), ATEVK-MXT1189TDAT-C (SPI), ATEVK-MXT1665TDAT-A (I2C) et ATEVK-MXT1665TDAT-C (SPI). Chaque kit comprend une carte \u00e9lectronique avec le contr\u00f4leur d\u2019\u00e9cran tactile maXTouch, un capteur tactile sur une dalle en verre transparent, la carte FPC (Flat Printed Circuit) \u00e0 connecter au capteur, et un adaptateur PCB pour connecter le kit \u00e0 l\u2019ordinateur h\u00f4te via USB, ainsi que les c\u00e2bles, les logiciels et la documentation techniques n\u00e9cessaires. Tous les composants sont \u00e9galement compatibles avec maXTouch Studio, un environnement de d\u00e9veloppement logiciel complet permettant l’\u00e9valuation des contr\u00f4leurs d\u2019\u00e9cran tactile maXTouch.<\/p>\n

Le service d\u2019optimisation des perturbations \u00e9lectromagn\u00e9tiques maXTouch sera disponible via le support technique de l\u2019un des centres de conception d\u2019applications dans le monde de Microchip.<\/p>\n

www.microchip.com\/design-centers\/capacitive-touch-sensing\/touch-pads-touch-screens\/2d-touch-libraries\/maxtouch<\/a><\/p>\n

Des d\u00e9bits de donn\u00e9es \u00e9lev\u00e9s associ\u00e9s \u00e0 une haute pr\u00e9cision pour les CAN de Microchip<\/a><\/h3>\n

Microchip \u00e9tend son portefeuille de produits de timing et de synchronisation<\/a><\/h3>\n

Commutateur Microchip 8 ports compatible avec le standard PoE IEEE 802.3bt<\/a><\/h3>\n

Microchip annonce la production de composants SiC pour des alimentations fiables<\/a><\/h3>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Microchip annonce le lancement de trois nouveaux contr\u00f4leurs d\u2019\u00e9cran tactile maXTouch et des services d\u2019optimisation qui r\u00e9solvent les probl\u00e8mes d\u2019interf\u00e9rence \u00e9lectromagn\u00e9tique (EMI) et de compatibilit\u00e9 \u00e9lectromagn\u00e9tique (CEM) que rencontrent les d\u00e9veloppeurs d\u2019\u00e9crans tactiles automobiles.<\/p>\n","protected":false},"author":9,"featured_media":82657,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-82656","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Boostez les qualifications anti-EMI des \u00e9crans tactiles automo...<\/title>\n<meta name=\"description\" content=\"Microchip annonce le lancement de trois nouveaux 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