{"id":8424,"date":"2021-09-21T13:49:42","date_gmt":"2021-09-21T13:49:42","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/?p=8424"},"modified":"2021-09-21T13:49:44","modified_gmt":"2021-09-21T13:49:44","slug":"rohde-schwarz-test-maling-utfordringer-ved-utvikling-av-kretser-med-lavt-effektforbruk","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/no\/energi-og-stromforsyning\/rohde-schwarz-test-maling-utfordringer-ved-utvikling-av-kretser-med-lavt-effektforbruk\/","title":{"rendered":"Rohde &#038; Schwarz Test &#038; M\u00e5ling &#8211; Utfordringer ved utvikling av kretser med lavt effektforbruk"},"content":{"rendered":"\n<p>Str\u00f8mforbruk er en viktig ytelsesparameter for nesten alle elektroniske enheter. \u00c5 spare energi er bra for milj\u00f8et og p\u00e5virker kostnadene, kundeopplevelsen og l\u00f8sningens levetid betydelig.<\/p>\n\n\n\n<p>Lavt str\u00f8mforbruk er relevant for alt elektronisk utstyr. Enten det blir drevet av str\u00f8mnettet, en stor batteripakke, et knappcelle-batteri eller energih\u00f8sting.<\/p>\n\n\n\n<p>Etter hvert som tingenes internett (IoT) vokser, blir design av kretser med lite str\u00f8mforbruk mer kritisk. De er avhengige av tr\u00e5dl\u00f8se teknologier med lav effekt som Bluetooth\u00ae Low Energy, NB-IoT, LoRaWAN eller Sigfox.<\/p>\n\n\n\n<p>Batterier i IoT-enheter varer ofte ti \u00e5r eller mer, for eksempel batterier i smarte vannm\u00e5lere. Det \u00e5 oppn\u00e5 denne typen lavt str\u00f8mforbruk inneb\u00e6rer mer enn bare \u00e5 ta i bruk kretser og komponenter med lav effekt.<\/p>\n\n\n\n<p>Laveffektsdesign starter vanligvis med et systemoppsett med lavt str\u00f8mforbruk. Dette best\u00e5r i \u00e5 velge de beste kommunikasjonsteknologiene og komponentene med lav effekt, ved \u00e5 bruke deres muligheter for str\u00f8msparing fullt ut.<\/p>\n\n\n\n<p>De fleste prosesseringsplattformer og kommunikasjonskretser har forskjellige str\u00f8mmoduser: aktiv, standby, s\u00f8vn og dyp s\u00f8vn. I tillegg gir kommunikasjonsteknologi spesifikke effektfunksjoner basert p\u00e5 den n\u00f8dvendige kommunikasjonsatferden, for eksempel:<\/p>\n\n\n\n<p>NB-IoT og LTE-M st\u00f8tter en str\u00f8msparingsmodus (PSM) og utvidet DRX (eDRX) -modus. I tillegg ble wake-up-radio-funksjonen nylig introdusert.<\/p>\n\n\n\n<p>Bluetooth\u00ae Low Energy &#8211; en teknologi med lav effekt som har gjort dynamisk str\u00f8mkontroll mulig med introduksjonen av Bluetooth\u00ae5.2<\/p>\n\n\n\n<p>Wi-Fi 802.11ax st\u00f8tter flere str\u00f8msparingsfunksjoner for IoT-applikasjoner, for eksempel wake-up-radio.<\/p>\n\n\n\n<h2 id=\"testing-hjelper-deg-med-a-optimalisere-effektforbruket\" class=\"wp-block-heading\">Testing hjelper deg med \u00e5 optimalisere effektforbruket<\/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-5496 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>\u00c5 forst\u00e5 hvordan en enhet forbruker str\u00f8m er veldig viktig. For eksempel har Bluetooth\u00ae-kretser vanligvis forskjellige driftsmodi:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Tomgang<\/li><li>S\u00f8vn<\/li><li>Dyp s\u00f8vn<\/li><\/ul>\n\n\n\n<p>Noen kretser har sv\u00e6rt lavt str\u00f8mforbruk i s\u00f8vnmodus, p\u00e5 bare noen f\u00e5 mikroamper, og toppstr\u00f8mmer for overf\u00f8ring p\u00e5 flere mA.<\/p>\n\n\n\n<p>Derfor er det viktig \u00e5 overv\u00e5ke str\u00f8mforbruket med forskjellige tester og optimalisere bruken av forskjellige moduser.<\/p>\n\n\n\n<p>NGM202 er en dobbel str\u00f8mforsyning som har fire m\u00e5leomr\u00e5der for str\u00f8m og 6\u00bd siffer. Disse funksjonene er ideelle for enheter med h\u00f8ye str\u00f8mtopper og lavt str\u00f8mforbruk i standby-modus.<\/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-5510 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=\"sorg-for-at-ett-enkelt-batteri-varer-hele-levetiden\" class=\"wp-block-heading\">S\u00f8rg for at ett enkelt batteri varer hele levetiden<\/h2>\n\n\n\n<p>Batterier som brukes til \u00e5 forsyne enheter med lite str\u00f8mforbruk er en annen viktig faktor. Batterier har unike egenskaper i l\u00f8pet av levetiden, for eksempel energitetthet og utladningskurver.<\/p>\n\n\n\n<p>Avanserte tester er avgj\u00f8rende i hver utviklingsfase for \u00e5 verifisere at designet fungerer. Testingen vil bestemme forventet ytelse i l\u00f8pet av batteriets livssyklus.<\/p>\n\n\n\n<p>\u00c5 teste en enhet over s\u00e5 lang tid er neppe mulig, noe som gj\u00f8r batterisimuleringstester avgj\u00f8rende. R&amp;S\u00aeNGM200-serien med str\u00f8mforsyninger kan etterligne batteriets faktiske ytelse og simulere b\u00e5de utlading og lading<\/p>\n\n\n\n<p>R&amp;S\u00aeNGM202 kan til og med simulere to batterier samtidig.<\/p>\n\n\n\n<h2 id=\"sorg-for-best-mulig-rf-ytelse\" class=\"wp-block-heading\">S\u00f8rg for best mulig RF-ytelse<\/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-5503 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>Produsenter m\u00e5 s\u00f8rge for at deres tr\u00e5dl\u00f8se enheter gir optimal RF-ytelse for fullgod kommunikasjon under alle forhold og p\u00e5 alle steder. Effekten d\u00e5rlig RF-ytelse har p\u00e5 str\u00f8mforbruket blir ofte oversett.<\/p>\n\n\n\n<p>Tr\u00e5dl\u00f8s kommunikasjonsteknologi bruker forskjellige teknikker for \u00e5 takle signalproblemer:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Tilpass TX-effekten<\/li><li>Bytt til mer robust modulering<\/li><li>Koder for \u00e5 starte blind repetisjon av meldinger<\/li><li>Bruk protokollen til \u00e5 gjenta meldinger til overf\u00f8ring er vellykket<\/li><\/ul>\n\n\n\n<p>Alle disse teknikkene gir h\u00f8yere str\u00f8mforbruk. Matematikken er enkel: \u00e5 sende en melding to ganger mer enn dobler sendetiden og str\u00f8mforbruket. Denne \u00f8kningen gj\u00f8r det viktig \u00e5 verifisere RF-ytelse i overf\u00f8ring og mottak.<\/p>\n\n\n\n<p>\u00c5 utf\u00f8re spektrumm\u00e5linger er verdifullt spesielt for et LoRaWAN-signal. LoRaWAN-signaler opererer i et sub-GHz b\u00e5nd mellom 125 kHz og 500 kHz.<\/p>\n\n\n\n<p>Den integrerte R&amp;S\u00aeFPC-mark\u00f8rfunksjonen gj\u00f8r det lettere \u00e5 foreta n\u00f8yaktige m\u00e5linger for forskjellige LoRa-overf\u00f8ringer og kanalb\u00e5ndbredder. Dette hjelper deg med \u00e5 verifisere at enheten leverer forventet TX-effekt innenfor de n\u00f8dvendige grensene.<\/p>\n\n\n\n<h2 id=\"sammendrag\" class=\"wp-block-heading\">Sammendrag<\/h2>\n\n\n\n<p>Mange produsenter fortsetter \u00e5 presse grensene for nye funksjoner og bedre ytelse i produktene, alt pakket i b\u00e6rbare, h\u00e5ndholdte, batteridrevne enheter. For disse produktene er forbedring av batterilevetiden ved \u00e5 minimere str\u00f8mforbruket det som kan utgj\u00f8re den store forskjellen fra konkurentene, samtidig som produktets totale levetid forbedres.<\/p>\n\n\n\n<p>Testing er en sv\u00e6rt viktig del av designprosessen og gj\u00f8r det mulig for ingeni\u00f8rer \u00e5 se n\u00e6rmere p\u00e5 en rekke str\u00f8msparingsteknikker som clock gating, power gating og multispenning.<\/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.elfadistrelec.no\/no\/manufacturer\/rohde-schwarz\/man_rsz?no-cache=true\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Kj\u00f8p Rohde &amp; Schwarz<\/strong><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Str\u00f8mforbruk er en viktig ytelsesparameter for nesten alle elektroniske enheter. \u00c5 spare energi er bra for milj\u00f8et og&hellip;\n","protected":false},"author":4,"featured_media":5517,"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":[213],"tags":[],"coauthors":[],"class_list":{"0":"post-8424","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-energi-og-stromforsyning","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>Rohde &amp; Schwarz Test &amp; M\u00e5ling - Utfordringer ved utvikling av kretser med lavt effektforbruk - 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\/no\/energi-og-stromforsyning\/rohde-schwarz-test-maling-utfordringer-ved-utvikling-av-kretser-med-lavt-effektforbruk\/\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rohde &amp; Schwarz Test &amp; M\u00e5ling - Utfordringer ved utvikling av kretser med lavt effektforbruk - KnowHow\" \/>\n<meta property=\"og:description\" content=\"Str\u00f8mforbruk er en viktig ytelsesparameter for nesten alle elektroniske enheter. \u00c5 spare energi er bra for milj\u00f8et og&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/knowhow.distrelec.com\/no\/energi-og-stromforsyning\/rohde-schwarz-test-maling-utfordringer-ved-utvikling-av-kretser-med-lavt-effektforbruk\/\" \/>\n<meta property=\"og:site_name\" content=\"KnowHow\" \/>\n<meta property=\"article:published_time\" content=\"2021-09-21T13:49:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-21T13:49:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/08\/rohdeswarchz-banner.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Chris Rush\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Skrevet av\" \/>\n\t<meta name=\"twitter:data1\" content=\"Chris Rush\" \/>\n\t<meta name=\"twitter:label2\" content=\"Ansl. lesetid\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutter\" \/>\n\t<meta name=\"twitter:label3\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data3\" content=\"Chris Rush\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/knowhow.distrelec.com\/no\/energi-og-stromforsyning\/rohde-schwarz-test-maling-utfordringer-ved-utvikling-av-kretser-med-lavt-effektforbruk\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/knowhow.distrelec.com\/no\/energi-og-stromforsyning\/rohde-schwarz-test-maling-utfordringer-ved-utvikling-av-kretser-med-lavt-effektforbruk\/\"},\"author\":{\"name\":\"Chris Rush\",\"@id\":\"https:\/\/knowhow.distrelec.com\/no\/#\/schema\/person\/7e26cae6e56b17cb61a1affd475750a2\"},\"headline\":\"Rohde &#038; 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