{"id":2719,"date":"2025-11-27T12:17:28","date_gmt":"2025-11-27T11:17:28","guid":{"rendered":"https:\/\/valo.troispetitspoints.org\/?p=2719"},"modified":"2025-12-08T17:58:31","modified_gmt":"2025-12-08T16:58:31","slug":"croquons-le-numerique-det4all","status":"publish","type":"post","link":"https:\/\/valo.troispetitspoints.org\/en\/croquons-le-numerique-det4all\/","title":{"rendered":"Reduce electromagnetic waves"},"content":{"rendered":"<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Croquons le num\u00e9rique : Det4all\" width=\"790\" height=\"444\" src=\"https:\/\/www.youtube.com\/embed\/BhSlUaQvDM0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Croquons le num\u00e9rique : DET4ALL<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Envoyer un signal partout, c\u2019est simple. L\u2019envoyer exactement o\u00f9 il faut, voil\u00e0 l\u2019enjeu.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Croquons le Num\u00e9rique est une s\u00e9rie de vid\u00e9os dessin\u00e9es produites par Inria et 3 Petits Points pour expliquer simplement des projets qui font avancer la recherche en sciences du num\u00e9rique. Un projet rendu possible gr\u00e2ce \u00e0 l\u2019ANR.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comment \u00eatre s\u00fbr qu\u2019un signal sans fil arrive au bon endroit, au bon moment, avec la bonne intensit\u00e9 ?<br>Pour un appel vid\u00e9o, un robot d\u2019usine qui bouge son bras ou un drone qui doit r\u00e9agir en une fraction de seconde, la moindre erreur peut tout d\u00e9r\u00e9gler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Aujourd\u2019hui, la plupart des signaux sont envoy\u00e9s dans toutes les directions en m\u00eame temps. Et \u00e7a marche ! Mais&#8230; ! Mais c\u2019est tr\u00e8s inefficace : beaucoup d\u2019\u00e9nergie est perdue, et la pr\u00e9cision laisse parfois \u00e0 d\u00e9sirer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le projet Det4all, commenc\u00e9 au centre Inria d&rsquo;universit\u00e9 c\u00f4te d&rsquo;Azur par Damien Saucez, a explor\u00e9 une approche diff\u00e9rente.<br><br>L\u2019id\u00e9e est simple \u00e0 imaginer : Rep\u00e9rer dans quelle direction se situe le r\u00e9cepteur, envoyer le signal seulement l\u00e0 o\u00f9 il faut et ajuster sa puissance selon la distance. Il reste \u00e0 orchestrer l\u2019arriv\u00e9e de plusieurs signaux pour qu\u2019ils ne se marchent jamais dessus<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Prenons l&rsquo;exemple d&rsquo;une usine remplie de robots qui doivent se coordonner au millim\u00e8tre pr\u00e8s. Si un robot re\u00e7oit une instruction trop tard, trop t\u00f4t ou trop affaiblie, toute la cha\u00eene peut se bloquer.<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Avec des signaux mieux dirig\u00e9s et correctement synchronis\u00e9s, les gestes sont plus s\u00fbrs, plus propres, plus fiables.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Avec les dessins de Nadja Zendejas, sous la direction d&rsquo;Alice Decarpigny.<\/p>","protected":false},"excerpt":{"rendered":"<p>Croquons le num\u00e9rique : DET4ALL Envoyer un signal partout, c\u2019est simple. L\u2019envoyer exactement o\u00f9 il faut, voil\u00e0 l\u2019enjeu. Croquons le Num\u00e9rique est une s\u00e9rie de vid\u00e9os dessin\u00e9es produites par Inria&hellip; <\/p>","protected":false},"author":1,"featured_media":2720,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[283,378,303,605],"tags":[662,88,674],"class_list":["post-2719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-motion-design-scientifique","category-science-et-art","category-sciences-trois-petits-points","category-valorisation-de-la-recherche","tag-anr","tag-communication-scientifique","tag-croquons-le-numerique"],"_links":{"self":[{"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/posts\/2719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/comments?post=2719"}],"version-history":[{"count":2,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/posts\/2719\/revisions"}],"predecessor-version":[{"id":2730,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/posts\/2719\/revisions\/2730"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/media\/2720"}],"wp:attachment":[{"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/media?parent=2719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/categories?post=2719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/valo.troispetitspoints.org\/en\/wp-json\/wp\/v2\/tags?post=2719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}