{"id":86443,"date":"2024-05-13T17:46:42","date_gmt":"2024-05-13T17:46:42","guid":{"rendered":"https:\/\/www.africa-press.net\/burkina-faso\/politique\/un-gant-connecte-qui-permet-de-communiquer-sous-leau"},"modified":"2024-05-13T18:17:07","modified_gmt":"2024-05-13T18:17:07","slug":"un-gant-connecte-qui-permet-de-communiquer-sous-leau","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/burkina-faso\/toutes-les-actualites\/un-gant-connecte-qui-permet-de-communiquer-sous-leau","title":{"rendered":"Un gant connect\u00e9 qui permet de communiquer sous l&rsquo;eau"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Burkina Faso. <\/strong><\/span>Sous l\u2019eau, quand un plongeur forme un rond avec son index et son pouce, il veut dire \u00ab\u00a0OK\u00a0\u00bb. Sauf que les gestes subaquatiques ne sont pas toujours faciles a\u0300 distinguer, en raison de l\u2019e\u0301tat de l\u2019eau. D\u2019ou\u0300 la conception d\u2019un gant communicant, capable de transmettre en surface, sur un e\u0301cran d\u2019ordinateur, le signal adresse\u0301 par le plongeur avec sa main.<\/p>\n<p>Le projet e\u0301mane d\u2019une e\u0301quipe chinoise spe\u0301cialiste en textiles intelligents a\u0300 l\u2019universite\u0301 de Qingdao. Il est de\u0301crit dans un article publie\u0301 en avril 2024 dans la revue ACS Nano. Relevant du champ de l\u2019Internet des objets subaquatiques (IoUT), il n\u2019est pas re\u0301serve\u0301 a\u0300 la plonge\u0301e: il peut servir en natation, sous la pluie, dans les embruns et les e\u0301claboussures, voire dans des nuages de poussie\u0300re, partout ou\u0300 la visibilite\u0301 fait de\u0301faut en somme.<\/p>\n<p><b>Un gant inspire\u0301 des pieds de l&rsquo;e\u0301toile de mer<\/b><\/p>\n<p>L\u2019accessoire, appele\u0301 gant a\u0300 reconnaissance de geste (GRG), s\u2019inspire des branches de l\u2019e\u0301toile de mer, garnis de microtubes flexibles et tactiles qui lui servent de pieds. Le gant compte dix de ce genre de tubes en polydime\u0301thylsiloxane, un polyme\u0300re, chacun e\u0301tant relie\u0301 a\u0300 une articulation spe\u0301cifique: les cinq reliant les doigts a\u0300 la paume de la main et cinq autres reliant des phalanges entre elles.<\/p>\n<p>La de\u0301formation des tubes due a\u0300 l\u2019exe\u0301cution de tel ou tel geste de la main de\u0301clenchent une activite\u0301 e\u0301lectrique collecte\u0301e par des capteurs en oxyde d\u2019indium-e\u0301tain, un compose\u0301 conducteur. Ce sont eux qui transmettent le signal de\u0301clenche\u0301 par les mouvements des doigts.<\/p>\n<p><b>Apprentissage de 16 signaux<\/b><\/p>\n<p>Mais pour que le signal soit en quelque sorte de\u0301code\u0301 et s\u2019affiche de manie\u0300re intelligible pour un coe\u0301quipier devant un e\u0301cran, les chercheurs ont eu recours a\u0300 un algorithme d\u2019apprentissage automatique. Le projet portant sur 16 gestes diffe\u0301rentes (\u00ab\u00a0OK\u00a0\u00bb, \u00ab\u00a0Danger\u00a0\u00bb, \u00ab\u00a0Au secours\u00a0\u00bb, \u00ab\u00a0Requin\u00a0\u00bb&#8230;), l\u2019algorithme a donc e\u0301te\u0301 entrai\u0302ne\u0301 et teste\u0301 sur l\u2019activite\u0301 e\u0301lectrique e\u0301manant de 150 variantes de chaque geste, afin qu&rsquo;il soit puisse classer correctement chacun d\u2019entre eux.<\/p>\n<p>Au final, l\u2019algorithme s\u2019est ave\u0301re\u0301 capable d\u2019identifier un geste avec 99,8% d\u2019exactitude. Le dispositif peut alors s\u2019appliquer a\u0300 la communication aussi bien entre un plongeur ou un nageur avec une e\u0301quipe reste\u0301e sur la terre ferme qu\u2019entre deux plongeurs trop e\u0301loigne\u0301s l\u2019un de l\u2019autre ou manquant de visibilite\u0301. Dans ce dernier cas de figure, le geste peut e\u0302tre traduit en un signal audio envoye\u0301 dans des e\u0301couteurs.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/burkina-faso\">Burkina Faso<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Burkina Faso. Sous l\u2019eau, quand un plongeur forme un rond avec son index et son pouce, il veut dire \u00ab\u00a0OK\u00a0\u00bb. Sauf que les gestes subaquatiques ne sont pas toujours faciles a\u0300 distinguer, en raison de l\u2019e\u0301tat de l\u2019eau. D\u2019ou\u0300 la conception d\u2019un gant communicant, capable de transmettre en surface, sur un e\u0301cran d\u2019ordinateur, [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":86442,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[111,725,29],"class_list":["post-86443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-burkina-faso","tag-burkina-faso"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Un gant connect\u00e9 qui permet de communiquer sous l&#039;eau - Burkina Faso<\/title>\n<meta name=\"description\" content=\"Sous l\u2019eau, quand un plongeur forme un rond avec son index et son pouce, il veut dire &quot;OK&quot;. Sauf que les gestes subaquat ...\" \/>\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.africa-press.net\/burkina-faso\/toutes-les-actualites\/un-gant-connecte-qui-permet-de-communiquer-sous-leau\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un gant connect\u00e9 qui permet de communiquer sous l&#039;eau\" \/>\n<meta property=\"og:description\" content=\"Sous l\u2019eau, quand un plongeur forme un rond avec son index et son pouce, il veut dire &quot;OK&quot;. 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