{"id":5558,"date":"2021-08-10T11:19:01","date_gmt":"2021-08-10T11:19:01","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/?p=5558"},"modified":"2021-09-07T17:08:28","modified_gmt":"2021-09-07T17:08:28","slug":"test-mesure-rohde-schwarz-les-defis-de-la-conception-des-technologies-a-faible-consommation-denergie","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/fr\/energie-et-alimentation-electrique\/test-mesure-rohde-schwarz-les-defis-de-la-conception-des-technologies-a-faible-consommation-denergie\/","title":{"rendered":"Test &#038; Mesure Rohde &#038; Schwarz &#8211; Les d\u00e9fis de la conception des technologies \u00e0 faible consommation d&rsquo;\u00e9nergie"},"content":{"rendered":"\n<p>La consommation d&rsquo;\u00e9nergie est un facteur de performance important pour presque tous les appareils \u00e9lectroniques. Les \u00e9conomies d&rsquo;\u00e9nergie sont b\u00e9n\u00e9fiques pour l&rsquo;environnement et ont un impact significatif sur les co\u00fbts, l&rsquo;exp\u00e9rience client et la dur\u00e9e de vie d&rsquo;une solution.<\/p>\n\n\n\n<p>La faible consommation d&rsquo;\u00e9nergie est importante pour tous les appareils \u00e9lectroniques. Que ceux-ci soient aliment\u00e9s par le r\u00e9seau \u00e9lectrique, par une grande batterie, par une pile-bouton ou par la r\u00e9colte d&rsquo;\u00e9nergie.<\/p>\n\n\n\n<p>\u00c0 mesure que l&rsquo;internet des objets (IoT) se d\u00e9veloppe, la n\u00e9cessit\u00e9 de concevoir des produits \u00e0 faible consommation d&rsquo;\u00e9nergie devient de plus en plus critique. Les dispositifs IoT utilisent des technologies sans fil \u00e0 faible consommation d&rsquo;\u00e9nergie telles que Bluetooth\u00ae Low Energy, NB-IoT, LoRaWAN ou Sigfox.<\/p>\n\n\n\n<p>Les batteries des appareils IoT durent souvent dix ans ou plus, comme celles des compteurs d&rsquo;eau intelligents. La mise en \u0153uvre de ce type de consommation implique donc plus que des technologies et des composants \u00e0 faible consommation d&rsquo;\u00e9nergie.<\/p>\n\n\n\n<p>La conception de produits \u00e0 faible consommation d&rsquo;\u00e9nergie commence g\u00e9n\u00e9ralement par un concept. Ce concept consiste \u00e0 s\u00e9lectionner les meilleures technologies et les meilleurs composants de communication \u00e0 faible consommation d&rsquo;\u00e9nergie, en exploitant leurs caract\u00e9ristiques d&rsquo;\u00e9conomie d&rsquo;\u00e9nergie.<\/p>\n\n\n\n<p>La plupart des plateformes de traitement et des puces de communication ont diff\u00e9rents modes d&rsquo;alimentation : actif, veille, sommeil et sommeil profond. En outre, les technologies de communication offrent des propri\u00e9t\u00e9s \u00e9nerg\u00e9tiques sp\u00e9cifiques en fonction du comportement de communication requis, par exemple :<\/p>\n\n\n\n<p>NB-IoT et LTE-M prennent en charge un mode d&rsquo;\u00e9conomie d&rsquo;\u00e9nergie (PSM) et des modes DRX \u00e9tendus (eDRX). De plus, la fonction de signal de r\u00e9veil a \u00e9t\u00e9 r\u00e9cemment introduite.<\/p>\n\n\n\n<p>Bluetooth\u00ae Low Energy &#8211; une technologie \u00e0 faible consommation d&rsquo;\u00e9nergie qui permet un contr\u00f4le dynamique de la consommation depuis l&rsquo;introduction de Bluetooth\u00ae5.2<\/p>\n\n\n\n<p>Le Wi-Fi 802.11ax prend en charge plusieurs fonctions d&rsquo;\u00e9conomie d&rsquo;\u00e9nergie pour les applications IoT, telles que le signal de r\u00e9veil.<\/p>\n\n\n\n<h2 id=\"les-tests-permettent-doptimiser-la-conception-de-technologies-a-faible-consommation-denergie\" class=\"wp-block-heading\">Les tests permettent d&rsquo;optimiser la conception de technologies \u00e0 faible consommation d&rsquo;\u00e9nergie<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img  loading=\"lazy\"  decoding=\"async\"  height=\"576\"  width=\"1024\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAAJAAQMAAAApW4aWAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF5JREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAO8GIk8AAbOpTZoAAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-5493 pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohde-1-1024x576.jpg\" ><\/figure><\/div>\n\n\n\n<p>Il est tr\u00e8s important de comprendre le comportement d&rsquo;un appareil en mati\u00e8re de consommation d&rsquo;\u00e9nergie. Par exemple, les puces Bluetooth\u00ae ont g\u00e9n\u00e9ralement diff\u00e9rents modes de fonctionnement :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Veille<\/li><li>Sommeil<\/li><li>Sommeil profond<\/li><\/ul>\n\n\n\n<p>Certains ont des courants de veille tr\u00e8s faibles, de quelques microamp\u00e8res seulement, et des courants de pointe pour la transmission de plusieurs mA.<\/p>\n\n\n\n<p>Il est donc essentiel de surveiller la consommation d&rsquo;\u00e9nergie pendant les diff\u00e9rents tests et d&rsquo;optimiser l&rsquo;utilisation des diff\u00e9rents modes.<\/p>\n\n\n\n<p>La double alimentation NGM202 dispose de quatre plages de mesure de courant et d&rsquo;une r\u00e9solution allant jusqu&rsquo;\u00e0 6\u00bd chiffres. Ces propri\u00e9t\u00e9s les rendent particuli\u00e8rement adapt\u00e9es aux appareils pr\u00e9sentant des pics de courant \u00e9lev\u00e9s et une faible consommation en mode veille.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"450\"  height=\"253\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAcIAAAD9AQMAAAAVjeXKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACVJREFUaN7twQENAAAAwqD3T20PBxQAAAAAAAAAAAAAAAAAwLsBOVIAAdEjba8AAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-5507 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 450px) 100vw, 450px\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohde-2.png\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohde-2.png 450w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohde-2.png?resize=300,169 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohde-2.png?resize=380,214 380w\" ><\/figure><\/div>\n\n\n\n<h2 id=\"autonomie-a-vie-avec-une-seule-batterie\" class=\"wp-block-heading\">Autonomie \u00e0 vie avec une seule batterie<\/h2>\n\n\n\n<p>Les batteries utilis\u00e9es pour faire fonctionner les appareils \u00e0 faible consommation sont un autre facteur critique. Les batteries disposent de caract\u00e9ristiques uniques au cours de leur vie, telles que la densit\u00e9 \u00e9nerg\u00e9tique et les courbes de d\u00e9charge.<\/p>\n\n\n\n<p>Des tests avanc\u00e9s sont indispensables dans chaque phase de d\u00e9veloppement pour v\u00e9rifier que la batterie fonctionne. Les tests permettront de d\u00e9terminer les performances attendues tout au long du cycle de vie de la batterie.<\/p>\n\n\n\n<p>Il n&rsquo;est gu\u00e8re possible de tester un appareil sur une p\u00e9riode aussi longue, ce qui rend les tests de simulation de batterie essentiels. La s\u00e9rie d&rsquo;alimentations R&amp;S\u00aeNGM200 peut \u00e9muler les performances de sortie r\u00e9elles d&rsquo;une batterie, en simulant \u00e0 la fois la d\u00e9charge et la charge.<\/p>\n\n\n\n<p>La s\u00e9rie R&amp;S\u00aeNGM202 peut m\u00eame simuler deux batteries en m\u00eame temps.<\/p>\n\n\n\n<h2 id=\"assurer-des-performances-rf-optimales\" class=\"wp-block-heading\">Assurer des performances RF optimales<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img  loading=\"lazy\"  decoding=\"async\"  height=\"576\"  width=\"1024\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAAJAAQMAAAApW4aWAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF5JREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAO8GIk8AAbOpTZoAAAAASUVORK5CYII=\"  alt=\"\"  class=\"wp-image-5500 pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohde-3-1024x576.jpg\" ><\/figure><\/div>\n\n\n\n<p>Les fabricants doivent s&rsquo;assurer que leurs dispositifs sans fil offrent des performances RF optimales pour des communications harmonieuses dans toutes les situations et tous les lieux. L&rsquo;impact d&rsquo;une mauvaise performance RF sur la consommation d&rsquo;\u00e9nergie est souvent n\u00e9glig\u00e9.<\/p>\n\n\n\n<p>Les technologies de communication sans fil utilisent diff\u00e9rentes techniques pour faire face aux probl\u00e8mes de r\u00e9ception des signaux :<\/p>\n\n\n\n<p>\u2022 Adapter la puissance TX<\/p>\n\n\n\n<p>\u2022 Passer \u00e0 une modulation plus robuste<\/p>\n\n\n\n<p>\u2022 Sch\u00e9mas de codage pour la transmission continue sans r\u00e9troaction<\/p>\n\n\n\n<p>\u2022 Utiliser le protocole pour r\u00e9p\u00e9ter les messages jusqu&rsquo;\u00e0 ce qu&rsquo;ils soient transmis avec succ\u00e8s<\/p>\n\n\n\n<p>Toutes ces techniques ont pour cons\u00e9quence une consommation d&rsquo;\u00e9nergie plus \u00e9lev\u00e9e. Le raisonnement est simple : envoyer un message deux fois fait plus que doubler le temps de diffusion et la consommation d&rsquo;\u00e9nergie. Cette augmentation rend essentielle la v\u00e9rification des performances RF au niveau de la transmission et de la r\u00e9ception.<\/p>\n\n\n\n<p>Il est utile d&rsquo;effectuer des mesures du spectre, en particulier pour un signal LoRaWAN. Les signaux LoRaWAN fonctionnent dans une bande de fr\u00e9quences sub-gHz comprise entre 125 kHz et 500 kHz.<\/p>\n\n\n\n<p>La fonction de marquage int\u00e9gr\u00e9e du R&amp;S\u00aeFPC prend en charge des mesures pr\u00e9cises pour diff\u00e9rents \u00e9talements de spectre LoRa et bandes passantes de canal. Cela permet de v\u00e9rifier que le dispositif d\u00e9livre la puissance TX attendue dans les limites requises.<\/p>\n\n\n\n<h2 id=\"recapitulatif\" class=\"wp-block-heading\">R\u00e9capitulatif<\/h2>\n\n\n\n<p>De nombreux fabricants continuent de d\u00e9passer les limites des nouvelles caract\u00e9ristiques et fonctionnalit\u00e9s de leurs produits portables, de poche et \u00e0 batterie. Pour ces produits, l&rsquo;am\u00e9lioration de la dur\u00e9e de vie de la batterie en minimisant la consommation d&rsquo;\u00e9nergie est un facteur de distinction important entre les concurrents, mais aussi une am\u00e9lioration de la dur\u00e9e de vie globale du produit.<\/p>\n\n\n\n<p>Les tests font partie int\u00e9grante du processus de conception et permettent aux ing\u00e9nieurs d&rsquo;explorer un certain nombre de techniques d&rsquo;\u00e9conomie d&rsquo;\u00e9nergie, telles que le clock gating, le power gating et le multi voltage.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-red-background-color has-background\" href=\"https:\/\/www.distrelec.com\/global\/?search=rohde+schwarz\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Parcourir la gamme Rohde &amp; Schwarz<\/strong><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"La consommation d&rsquo;\u00e9nergie est un facteur de performance important pour presque tous les appareils \u00e9lectroniques. Les \u00e9conomies d&rsquo;\u00e9nergie&hellip;\n","protected":false},"author":12,"featured_media":5514,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[182],"tags":[],"coauthors":[],"class_list":{"0":"post-5558","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-energie-et-alimentation-electrique","8":"cs-entry","9":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Test &amp; Mesure Rohde &amp; Schwarz - Les d\u00e9fis de la conception des technologies \u00e0 faible consommation d&#039;\u00e9nergie - KnowHow<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/knowhow.distrelec.com\/fr\/energie-et-alimentation-electrique\/test-mesure-rohde-schwarz-les-defis-de-la-conception-des-technologies-a-faible-consommation-denergie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Test &amp; Mesure Rohde &amp; Schwarz - Les d\u00e9fis de la conception des technologies \u00e0 faible consommation d&#039;\u00e9nergie - KnowHow\" \/>\n<meta property=\"og:description\" content=\"La consommation d&rsquo;\u00e9nergie est un facteur de performance important pour presque tous les appareils \u00e9lectroniques. 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