Plume Plume is Localization Using Magnetic Emitters 3 mars 2014 - #rose2014 Benjamin Groeneveld Marc-Olivier Koppe Guénolé Lallement Virgile Quintin Olivier Tassinari
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Notre projet
Plume Système de positionnement tridimensionnel
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Sommaire 1. 2. 3. 4. 5. 6.
Contexte Projet Fonctionnalités Architecture BLE Solution proposée - limites techniques Points d’étape
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Fonctionnalités
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Fonctionnalités ● Objectifs Portée des modules Précision du système
5m 1 cm
|
1°
Fréquence des positions
200 Hz
Autonomie récepteur
8h en mode actif 1 semaine en mode passif
Encombrement du récepteur
4 x 4 x 4 cm
Latence
inférieure à 20 ms
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Fonctionnalités ● Localisation en intérieur et extérieur ○ Pas de contrainte d’obstacles ○ Plusieurs modules localisables
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Fonctionnalités ● Maîtrise de la position et de l’orientation ○ Six degrés de liberté (6DOF) ○ En temps réel (latence < 20ms)
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Fonctionnalités ● Communications sans-fil ○ Peu de consommation d’energie (BLE) ○ Intra-système ○ Utilisateur, système
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Fonctionnalités ● Portée ○ Peu contraignante pour l’utilisateur (5 mètres) ○ Extensible par ajout de modules
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Fonctionnalités ● Petit et léger ○ Récepteur portable ≤ ○ Émetteur ≤
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4x4x4 cm 8x8x16 cm
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Fonctionnalités ● Autonomie ○ Sur batterie ○ Rechargeable par USB
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Architecture BLE Définition du profil
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Architecture BLE ● Deux possibilités d’utilisation ○ Comme un server (ex. : manette) ○ Comme un advertiser ● Deux modes ○ Connecté ○ Diffusion
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Architecture BLE ● Mode manette ○ Possibilité d’utiliser le profil ou service HID ● Mode advertiser ○ À définir nous-même ● Mode server ○ À définir nous-même
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Architecture BLE ● Caractéristique de positionnement ○ 6 nombres à virgule flottante sur 32 bits ○ 6 entiers signés sur 16 bits ● Profil ○ Niveau de batterie ? ○ Inclure HIDS ? ○ Modifier HOGP ?
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Solution proposée - limites techniques
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La solution choisie Le positionnement par mesure de champ magnétique
station émettrice
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système à localiser
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Inconvénients et limites de la technologie ● ●
●
Nécessité d’une ou plusieurs bases Normes sanitaires sur les champs magnétique à vérifier Portée limitée ○ ○
● ●
par la puissance du champ par la qualité de la chaîne de réception
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