{"id":195771,"date":"2016-10-12T02:00:00","date_gmt":"2016-10-12T02:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/accelerometres-mems-facilitant-la-detection-precoce-des-defauts-structurels\/"},"modified":"2016-10-12T02:00:00","modified_gmt":"2016-10-12T02:00:00","slug":"accelerometres-mems-facilitant-la-detection-precoce-des-defauts-structurels","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/accelerometres-mems-facilitant-la-detection-precoce-des-defauts-structurels\/","title":{"rendered":"Acc\u00e9l\u00e9rom\u00e8tres MEMS facilitant la d\u00e9tection pr\u00e9coce des d\u00e9fauts structurels"},"content":{"rendered":"<p>Le faible niveau de bruit de ces acc\u00e9l\u00e9rom\u00e8tres ainsi que leur faible consommation, permettent de r\u00e9aliser, au meilleur co\u00fbt, des applications de mesure de vibrations de faible niveau telles que les solutions de surveillance d\u2019int\u00e9grit\u00e9 des structures (SHM). De plus, leur stabilit\u00e9 en inclinaison autorise une excellente reproductibilit\u00e9 dans le temps et en temp\u00e9rature, ce qui convient pour les syst\u00e8mes d\u2019orientation et de navigation embarqu\u00e9s \u00e0 bord des v\u00e9hicules a\u00e9riens sans pilote (drones) munis de centrales inertielles et d\u2019inclinom\u00e8tres. En autorisant des mesures d\u2019inclinaison reproductibles quelles que soient les conditions, ces dispositifs assurent des erreurs d\u2019inclinaison minimales et permettent de s\u2019affranchir d\u2019un \u00e9talonnage particulier dans des environnements difficiles.<\/p>\n<p>Ces acc\u00e9l\u00e9rom\u00e8tres MEMS garantissent une stabilit\u00e9 en temp\u00e9rature avec une d\u00e9rive d\u2019offset (0g) en temp\u00e9rature quasi nulle de 0,15 mg\/\u00b0C (max). Cette stabilit\u00e9 minimise les ressources et les co\u00fbts associ\u00e9s \u00e0 l\u2019\u00e9talonnage et aux essais, ce qui donne aux fabricants OEM la possibilit\u00e9 d\u2019atteindre un d\u00e9bit de production sup\u00e9rieur. De plus, le bo\u00eetier herm\u00e9tique garantit la conformit\u00e9 du produit final \u00e0 ses propres sp\u00e9cifications de reproductibilit\u00e9 et de stabilit\u00e9 longtemps apr\u00e8s avoir quitt\u00e9 l\u2019usine.<\/p>\n<p>Avec une dynamique de pleine \u00e9chelle (FSR) comprise entre \u00b12 et \u00b18&nbsp;g en sortie, un filtre num\u00e9rique programmable de 1&nbsp;Hz \u00e0 1&nbsp;kHz, et une faible densit\u00e9 de bruit de 25 \u03bcg\/Hz<sup>1\/2 <\/sup>pour une consommation inf\u00e9rieure \u00e0 200 \u03bcA, ces acc\u00e9l\u00e9rom\u00e8tres offrent un niveau de performances comparable \u00e0 celui d\u2019appareils nettement plus on\u00e9reux, tout en pr\u00e9sentant une consommation d\u2019\u00e9nergie et des co\u00fbts de nomenclature inf\u00e9rieurs.<\/p>\n<p>Ces deux composants sont propos\u00e9s en petit bo\u00eetier LCC-14 de seulement 6 x 6 mm.<\/p>\n<p><a href=\"http:\/\/www.analog.com\/ADXL354\" target=\"_blank\" rel=\"noopener\">www.analog.com\/ADXL354<\/a><\/p>\n<p><a href=\"http:\/\/www.analog.com\/ADXL355\" target=\"_blank\" rel=\"noopener\">www.analog.com\/ADXL355<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Con\u00e7us pour mesurer les vibrations avec une haute r\u00e9solution et un tr\u00e8s faible niveau de bruit, les acc\u00e9l\u00e9rom\u00e8tres MEMS 3 axes ADXL354 \u00e0 sortie analogique, et ADXL355 \u00e0 sortie SPI, d\u2019Analog Devices autorisent une d\u00e9tection anticip\u00e9e des d\u00e9fauts de structure via un r\u00e9seau de capteurs sans fil. En outre, leur faible consommation d\u2019\u00e9nergie prolonge la dur\u00e9e de vie de la batterie.<\/p>\n","protected":false},"author":9,"featured_media":195772,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[910],"domains":[47],"ppma_author":[1141],"class_list":["post-195771","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-sensing-conditioning-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title><\/title>\n<meta name=\"description\" content=\"Con\u00e7us pour mesurer les vibrations avec une haute r\u00e9solution et un tr\u00e8s faible niveau de bruit, les acc\u00e9l\u00e9rom\u00e8tres MEMS 3 axes ADXL354 \u00e0 sortie...\" \/>\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\/195771\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Acc\u00e9l\u00e9rom\u00e8tres MEMS facilitant la d\u00e9tection pr\u00e9coce des d\u00e9fauts structurels\" \/>\n<meta property=\"og:description\" content=\"Con\u00e7us pour mesurer les vibrations avec une haute r\u00e9solution et un tr\u00e8s faible niveau de bruit, les acc\u00e9l\u00e9rom\u00e8tres MEMS 3 axes ADXL354 \u00e0 sortie analogique, et ADXL355 \u00e0 sortie SPI, d\u2019Analog Devices autorisent une d\u00e9tection anticip\u00e9e des d\u00e9fauts de structure via un r\u00e9seau de capteurs sans fil. En outre, leur faible consommation d\u2019\u00e9nergie prolonge la dur\u00e9e de vie de la batterie.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/195771\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2016-10-12T02:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci8103_analog_devices_accelerometres_adxl354-5_r.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1860\" \/>\n\t<meta property=\"og:image:height\" content=\"1374\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alain Dieul\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alain Dieul\" \/>\n\t<meta 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