{"id":879,"date":"2022-06-14T17:01:31","date_gmt":"2022-06-14T15:01:31","guid":{"rendered":"http:\/\/asso.unilim.fr\/fablab19\/?p=879"},"modified":"2022-06-15T10:01:31","modified_gmt":"2022-06-15T08:01:31","slug":"arcana-radiolocalisation-de-cavite","status":"publish","type":"post","link":"https:\/\/asso.unilim.fr\/fablab19\/2022\/06\/14\/arcana-radiolocalisation-de-cavite\/","title":{"rendered":"Arcana &#8211; Radiolocalisation de cavit\u00e9"},"content":{"rendered":"<p><strong>Jean Louis Amiard<\/strong> , adh\u00e9rent du Fablab19 et concepteur du\u00a0 syst\u00e8me ARCANA, r\u00e9alise un d\u00e9monstration de son syst\u00e8me de rep\u00e9rage <a href=\"https:\/\/www.lamontagne.fr\/noailles-19600\/actualites\/demonstration-de-larcana-au-gouffre-de-la-fage-le-lundi-6-juin-prochain_14137901\/\">[Article de la Montagne]<\/a><\/p>\n<p>Il s&rsquo;est appuy\u00e9 sur les ressources du Fablab pour mettre au point ses prototypes et a pu d\u00e9montrer l&rsquo;efficacit\u00e9 de son syst\u00e8me en situation r\u00e9elle<\/p>\n<p><strong>Apr\u00e8s la pr\u00e9sentation du syst\u00e8me sur \u00e9cran \u00e0 l\u2019aide d\u2019un diaporama,<\/strong> l\u2019\u00e9metteur a \u00e9t\u00e9 mis en place dans la galerie du Gouffre de la Fage.<br \/>\nMoins d\u2019une demi-heure plus tard, les op\u00e9rations de vis\u00e9e avaient permis de d\u00e9terminer la verticale de l\u2019emplacement de l\u2019\u00e9metteur (deux vis\u00e9es confirm\u00e9es par une troisi\u00e8me)<br \/>\nUne autre demi-heure a suffit pour r\u00e9aliser deux mesures d\u2019angles par rapport \u00e0 l\u2019horizontale dans deux directions diff\u00e9rentes, afin de calculer la profondeur de l\u2019\u00e9metteur.<br \/>\nLes deux mesures ont donn\u00e9 18,15 m et 17,71 m, ce qui donne une moyenne de 17,93 m arrondie \u00e0 17,9 m.<br \/>\n<strong>Les \u00e9carts de +0,25 et \u20130,19 sont respectivement de +1,4% et \u20131,1% du r\u00e9sultat final<\/strong>, qui peut \u00eatre en pratique arrondi \u00e0 18 m.<br \/>\nLe site fermant \u00e0 17 h, les essais de transmission de messages n\u2019ont pu \u00eatre entrepris, mais ils n\u2019auraient pos\u00e9 aucun probl\u00e8me car la port\u00e9e dans le sens surface-fond est d\u2019une quarantaine de m\u00e8tres. Dans le sens fond-surface, la port\u00e9e est de l\u2019ordre de 70 m. Cette diff\u00e9rence s\u2019explique car dans l\u2019\u00e9metteur, la bobine est commune \u00e0 l\u2019\u00e9mission et \u00e0 la r\u00e9ception, alors qu\u2019en surface, les fonctions d\u2019\u00e9mission et de r\u00e9ception sont assur\u00e9es par deux appareils diff\u00e9rents, la r\u00e9ception \u00e9tant assur\u00e9e par une bobine torique de grand diam\u00e8tre (50 cm) avec un grand nombre de spires de fil fin. L\u2019\u00e9mission est assur\u00e9e par une bobine de gros fil sur noyau de ferrite avec un nombre de spires r\u00e9duit.<\/p>\n<h1 data-r=\"j\" data-dep=\"19\">\u00a0l\u2019Arcana au gouffre de la Fage le lundi 6 juin 2022<\/h1>\n<p><a href=\"https:\/\/www.lamontagne.fr\/noailles-19600\/actualites\/demonstration-de-larcana-au-gouffre-de-la-fage-le-lundi-6-juin-prochain_14137901\/\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-880\" src=\"https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-scaled.jpg\" alt=\"\" width=\"509\" height=\"380\" srcset=\"https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-scaled.jpg 2560w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-300x224.jpg 300w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-1024x765.jpg 1024w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-768x574.jpg 768w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-1536x1148.jpg 1536w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2022\/06\/La_Montagne_14_06_2022-2048x1530.jpg 2048w\" sizes=\"auto, (max-width: 509px) 100vw, 509px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jean Louis Amiard , adh\u00e9rent du Fablab19 et concepteur du\u00a0 syst\u00e8me ARCANA, r\u00e9alise un d\u00e9monstration de son syst\u00e8me de rep\u00e9rage [Article de la Montagne] Il s&rsquo;est appuy\u00e9 sur les ressources du Fablab pour mettre au point ses prototypes et a pu d\u00e9montrer l&rsquo;efficacit\u00e9 de son syst\u00e8me en situation r\u00e9elle Apr\u00e8s la pr\u00e9sentation du syst\u00e8me sur [&hellip;]<\/p>\n","protected":false},"author":89,"featured_media":62,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,16],"tags":[],"class_list":["post-879","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-realisations"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - 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