{"id":235354,"date":"2016-01-12T23:00:00","date_gmt":"2016-01-12T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/surveillance-de-la-frequence-cardiaque-un-circuit-qui-change-tout\/"},"modified":"2016-01-12T23:00:00","modified_gmt":"2016-01-12T23:00:00","slug":"surveillance-de-la-frequence-cardiaque-un-circuit-qui-change-tout","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/surveillance-de-la-frequence-cardiaque-un-circuit-qui-change-tout\/","title":{"rendered":"Surveillance de la fr\u00e9quence cardiaque : un circuit qui change tout !"},"content":{"rendered":"<p>Le contr&ocirc;le du rythme cardiaque est l&rsquo;une des technologies de d&eacute;tection biom&eacute;trique les plus recherch&eacute;es actuellement pour les personnes de tous les niveaux de condition physique.Traditionnellement, cette mesure a &eacute;t&eacute; limit&eacute;e &agrave; l&rsquo;utilisation de sangles de poitrine incommodes li&eacute;es &agrave; un dispositif externe, comme une montre de fitness sp&eacute;cialis&eacute;e ou un smartphone, pas toujours facile &agrave; contr&ocirc;ler lorsque l&rsquo;on court ou &agrave; v&eacute;lo. La technologie de HRM au poignet change d&eacute;sormais la donne en mati&egrave;re de surveillance biom&eacute;trique en fournissant une mani&egrave;re confortable et plus pratique de mesurer la fr&eacute;quence cardiaque.<\/p>\n<\/p>\n<p>&quot;La solution HRM Si1144 de Silicon Labs aborde les d&eacute;fis de la mesure de la fr&eacute;quence cardiaque au poignet en fournissant une solution pr&eacute;cise, facile &agrave; mettre en &oelig;uvre et tr&egrave;s &eacute;conomique,&quot; d&eacute;clare Daniel Cooley, vice-pr&eacute;sident du marketing pour les produits IoT &agrave; Silicon Labs. &quot;Les autres avantages phares de cette solution incluent une consommation d&rsquo;&eacute;nergie &agrave; la pointe de l&rsquo;industrie et un tr&egrave;s petit encombrement, faisant du module Si1144 une solution parfaitement adapt&eacute;e aux dispositifs portables sensibles &agrave; la consommation &eacute;nerg&eacute;tique et ayant des contraintes d&rsquo;espace.&quot;<\/p>\n<\/p>\n<p>Dans un petit bo&icirc;tier LGA 10-lead de seulement 4,9 x 2,85 x 1,2 mm, ce module int&egrave;gre un d&eacute;tecteur optique, une LED verte, des pilotes de LED supportant jusqu&rsquo;&agrave; deux LED externes, un convertisseur analogique-num&eacute;rique (CAN), la logique de commande et une interface num&eacute;rique I2C offrant un d&eacute;bit de donn&eacute;es allant jusqu&rsquo;&agrave; 3,4 Mbits\/s.<br \/>\nLe capteur optique assure une d&eacute;tection pr&eacute;cise des faibles signaux d&rsquo;&eacute;coulement de sang au poignet avec une performance exceptionnelle rivalisant avec les conceptions HRM bas&eacute;es sur les sangles de poitrine.<br \/>\nUn choix de deux algorithmes couvre le fonctionnement du HRM en statique et, optionnellement, en dynamique avec une compensation de mouvement utilisant les donn&eacute;es d&rsquo;un acc&eacute;l&eacute;rom&egrave;tre externe.\n<\/p>\n<hr \/>\n<p>Cette solution HRM associe le d&eacute;tecteur optique soit avec un MCU Pearl Gecko embarquant un c&oelig;ur ARM Cortex-M4 ayant des fonctionnalit&eacute;s DSP pour les conceptions de haute performance &agrave; faible consommation &eacute;nerg&eacute;tique, soit avec un MCU Jade Gecko bas&eacute; sur un Cortex-M3 pour les conceptions plus simples et sensibles aux co&ucirc;ts.<br \/>\nPour une dur&eacute;e de vie de la batterie plus longue dans les dispositifs portables, la consommation d&rsquo;&eacute;nergie est ultra-r&eacute;duite avec courant de veille inf&eacute;rieur &agrave; 500 nA pour une tension d&rsquo;alimentation de 1,71 V &agrave; 3,6 V<br \/>\nCe module est accompagn&eacute; par la carte de d&eacute;veloppement HRM44-GGG-PS, facilitant l&rsquo;&eacute;valuation et la mise au point des applications HRM port&eacute;es au poignet. <\/p>\n<\/p>\n<p><a title=\"www.silabs.com\/HRM\" target=\"_blank\" href=\"http:\/\/www.silabs.com\/HRM\" rel=\"noopener\">www.silabs.com\/HRM<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour r\u00e9duire le co\u00fbt et la complexit\u00e9 des capteurs HRM de poignet pour surveillance du rythme cardiaque, Silicon Labs vient d\u2019introduire son module Si1144. De faible encombrement, il inclut un capteur optique de faible puissance associ\u00e9 \u00e0 un microcontr\u00f4leur EFM32 Gecko \u00e9conome en \u00e9nergie ex\u00e9cutant un algorithme propri\u00e9taire avanc\u00e9 de HRM. <\/p>\n","protected":false},"author":22,"featured_media":235355,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[908],"domains":[47],"ppma_author":[1149],"class_list":["post-235354","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-plds-fpgas-asics-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Surveillance de la fr\u00e9quence cardiaque : un circuit qui change...<\/title>\n<meta name=\"description\" content=\"Pour r\u00e9duire le co\u00fbt et la complexit\u00e9 des capteurs HRM de poignet pour surveillance du rythme cardiaque, Silicon Labs vient d\u2019introduire son module...\" \/>\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\/235354\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Surveillance de la fr\u00e9quence cardiaque : un circuit qui change tout !\" \/>\n<meta property=\"og:description\" content=\"Pour r\u00e9duire le co\u00fbt et la complexit\u00e9 des capteurs HRM de poignet pour surveillance du rythme cardiaque, Silicon Labs vient d\u2019introduire son module Si1144. 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