{"id":8325,"date":"2021-09-21T10:10:01","date_gmt":"2021-09-21T10:10:01","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/?p=8325"},"modified":"2021-09-21T10:10:02","modified_gmt":"2021-09-21T10:10:02","slug":"rohde-schwarz-test-mat-utmaningar-med-lageffektdesign","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/sv\/energi-stromforsorjning\/rohde-schwarz-test-mat-utmaningar-med-lageffektdesign\/","title":{"rendered":"Rohde &#038; Schwarz test &#038; m\u00e4t &#8211; Utmaningar med l\u00e5geffektdesign"},"content":{"rendered":"\n<p>Energif\u00f6rbrukning \u00e4r en viktig prestandaparameter f\u00f6r n\u00e4stan alla elektronikenheter. Att spara energi \u00e4r bra f\u00f6r milj\u00f6n och p\u00e5verkar avsev\u00e4rt kostnader, kundupplevelsen och en l\u00f6snings livstid.<\/p>\n\n\n\n<p>L\u00e5g energif\u00f6rbrukning \u00e4r relevant f\u00f6r alla elektronikenheter. Oavsett om det drivs via eln\u00e4tet, ett stort batteripaket, ett knappcellsbatteri eller fr\u00e5n sk\u00f6rdad energi.<\/p>\n\n\n\n<p>I takt med att Internet of Things (IoT) v\u00e4xer blir l\u00e5geffektdesign mer kritisk. Den f\u00f6rlitar sig p\u00e5 tr\u00e5dl\u00f6s teknik med l\u00e5g effekt som Bluetooth\u00ae Low Energy, NB-IoT, LoRaWAN eller Sigfox.<\/p>\n\n\n\n<p>Batterier i IoT-enheter h\u00e5ller ofta tio \u00e5r eller mer, till exempel batterier i smarta vattenm\u00e4tare. S\u00e5 att leverera den h\u00e4r typen av l\u00e5g energif\u00f6rbrukning involverar mer \u00e4n bara teknologi och komponenter med l\u00e5g effekt.<\/p>\n\n\n\n<p>L\u00e5geffektsdesign b\u00f6rjar vanligtvis med ett systemkoncept f\u00f6r l\u00e5geffekt. Detta koncept inneb\u00e4r att v\u00e4lja de b\u00e4sta kommunikationsteknikerna och komponenterna med l\u00e5g effekt, genom att utnyttja deras energibesparande funktioner.<\/p>\n\n\n\n<p>De flesta processplattformar och kommunikationschip har olika str\u00f6ml\u00e4gen: aktiv, standby, s\u00f6mn och djup s\u00f6mn. Dessutom tillhandah\u00e5ller kommunikationsteknik specifika energifunktioner baserat p\u00e5 det kommunikationsbeteende som kr\u00e4vs, till exempel:<\/p>\n\n\n\n<p>NB-IoT och LTE-M har st\u00f6d f\u00f6r ett energisparl\u00e4ge (PSM) och ut\u00f6kat DRX (eDRX). Dessutom introducerades v\u00e4ckarklocksfunktionen nyligen.<\/p>\n\n\n\n<p>Bluetooth\u00ae Low Energy &#8211; en teknik med l\u00e5g effekt som har m\u00f6jliggjort dynamisk effektkontroll sedan introduktionen av Bluetooth\u00ae5.2<\/p>\n\n\n\n<p>Wi-Fi 802.11ax har st\u00f6d f\u00f6r flera energisparfunktioner f\u00f6r IoT-applikationer, till exempel klockradio.<\/p>\n\n\n\n<h2 id=\"att-testa-hjalper-till-att-optimera-lageffektdesign\" class=\"wp-block-heading\">Att testa hj\u00e4lper till att optimera l\u00e5geffektdesign<\/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-5498 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>Att f\u00f6rst\u00e5 en enhets energif\u00f6rbrukningsbeteende \u00e4r mycket viktigt. Till exempel har Bluetooth\u00ae-chip vanligtvis olika driftl\u00e4gen:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Tomg\u00e5ng (Idle)<\/li><li>S\u00f6mn (Sleep)<\/li><li>Djup s\u00f6mn (Deep sleep)<\/li><\/ul>\n\n\n\n<p>Vissa med mycket l\u00e5g s\u00f6mnstr\u00f6m p\u00e5 endast n\u00e5gra f\u00e5 uA och toppstr\u00f6m f\u00f6r \u00f6verf\u00f6ring p\u00e5 \u00e5tskilliga mA.<\/p>\n\n\n\n<p>D\u00e4rf\u00f6r \u00e4r det viktigt att \u00f6vervaka str\u00f6mf\u00f6rbrukningen under olika tester och optimera anv\u00e4ndningen av olika l\u00e4gen.<\/p>\n\n\n\n<p>NGM202 dubbelt n\u00e4taggregat har fyra aktuella m\u00e4tomr\u00e5den och upp till 6\u00bd-siffrors uppl\u00f6sning. Dessa funktioner g\u00f6r dem idealiska f\u00f6r enheter med h\u00f6ga str\u00f6mtoppar och l\u00e5g str\u00f6mf\u00f6rbrukning i standby-l\u00e4ge.<\/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-5512 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=\"sakra-livstidsdrift-med-ett-enda-batteri\" class=\"wp-block-heading\">S\u00e4kra livstidsdrift med ett enda batteri<\/h2>\n\n\n\n<p>Batterier som anv\u00e4nds f\u00f6r att driva enheter med l\u00e5g effekt \u00e4r en annan kritisk faktor. Batterier har unika egenskaper under sin livstid, s\u00e5som energit\u00e4thet och urladdningskurvor.<\/p>\n\n\n\n<p>Avancerade tester \u00e4r avg\u00f6rande i varje utvecklingsfas f\u00f6r att verifiera att designen fungerar. Testerna kommer att avg\u00f6ra dess f\u00f6rv\u00e4ntade prestanda under batteriets livscykel.<\/p>\n\n\n\n<p>Att testa en enhet under en s\u00e5 l\u00e5ng tid \u00e4r knappast m\u00f6jligt, vilket g\u00f6r batterisimuleringstester n\u00f6dv\u00e4ndiga. R&amp;S\u00aeNGM200-n\u00e4taggregatserien kan efterlikna batteriets faktiska uteffekt och simulera b\u00e5de urladdning och laddning<\/p>\n\n\n\n<p>R&amp;S\u00aeNGM202 kan till och med simulera tv\u00e5 batterier samtidigt.<\/p>\n\n\n\n<h2 id=\"sakerstall-bast-i-klassen-rf-prestanda\" class=\"wp-block-heading\">S\u00e4kerst\u00e4ll &#8221;b\u00e4st-i-klassen&#8221; RF-prestanda<\/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-5505 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>Tillverkare m\u00e5ste se till att deras tr\u00e5dl\u00f6sa enheter ger optimal RF-prestanda f\u00f6r smidig kommunikation i alla situationer p\u00e5 alla platser. L\u00e5g RF-prestandas effekt p\u00e5 str\u00f6mf\u00f6rbrukningen f\u00f6rbises ofta.<\/p>\n\n\n\n<p>Teknik f\u00f6r tr\u00e5dl\u00f6s kommunikation anv\u00e4nder olika tekniker f\u00f6r att hantera signalproblem:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Anpassa TX-effekten<\/li><li>Byt till mer robust modulering<\/li><li>Kodscheman f\u00f6r att starta blind upprepning av meddelanden<\/li><li>Anv\u00e4nd protokollet f\u00f6r att upprepa meddelanden tills \u00f6verf\u00f6ringen lyckats<\/li><\/ul>\n\n\n\n<p>Alla dessa tekniska l\u00f6sningar resulterar i h\u00f6gre energif\u00f6rbrukning. Matematiken \u00e4r enkel: att skicka ett meddelande tv\u00e5 g\u00e5nger mer \u00e4n f\u00f6rdubblar tiden i luften och str\u00f6mf\u00f6rbrukningen. Denna \u00f6kning g\u00f6r det viktigt att verifiera RF-prestanda i \u00f6verf\u00f6rings- och mottagningsledet.<\/p>\n\n\n\n<p>Att utf\u00f6ra spektrumm\u00e4tningar \u00e4r v\u00e4rdefullt speciellt f\u00f6r en LoRaWAN-signal. LoRaWAN-signaler opererar i en sub-GHz-bandbredd mellan 125 kHz och 500 kHz.<\/p>\n\n\n\n<p>Den integrerade R&amp;S\u00aeFPC-mark\u00f6rfunktionen har st\u00f6d f\u00f6r noggranna m\u00e4tningar f\u00f6r olika LoRa-spridning och kanalbandbredd. Detta hj\u00e4lper till att verifiera att enheten levererar f\u00f6rv\u00e4ntat TX-effekt inom n\u00f6dv\u00e4ndiga gr\u00e4nser.<\/p>\n\n\n\n<h2 id=\"sammanfattning\" class=\"wp-block-heading\">Sammanfattning<\/h2>\n\n\n\n<p>M\u00e5nga tillverkare forts\u00e4tter att pressa gr\u00e4nserna f\u00f6r nya funktioner i sina produkter, allt f\u00f6rpackat i b\u00e4rbara, handh\u00e5llna och batteridrivna enheter. Det \u00e4r stor skillnad mellan konkurrenter att f\u00f6rb\u00e4ttra batteriets livsl\u00e4ngd i dessa produkter genom att minimera str\u00f6mf\u00f6rbrukningen, samtidigt som den totala produktens livsl\u00e4ngd f\u00f6rb\u00e4ttras.<\/p>\n\n\n\n<p>Att testa \u00e4r en integrerad del av designprocessen och g\u00f6r det m\u00f6jligt f\u00f6r ingenj\u00f6rer att utforska ett antal energisparande tekniker som klockbegr\u00e4nsning, effektbegr\u00e4nsning och multisp\u00e4nning.<\/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.elfa.se\/manufacturer\/rohde-schwarz\/man_rsz\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Handla Rohde &amp; Schwarz<\/strong><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Energif\u00f6rbrukning \u00e4r en viktig prestandaparameter f\u00f6r n\u00e4stan alla elektronikenheter. Att spara energi \u00e4r bra f\u00f6r milj\u00f6n och p\u00e5verkar&hellip;\n","protected":false},"author":4,"featured_media":5519,"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":[241],"tags":[],"coauthors":[],"class_list":{"0":"post-8325","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-energi-stromforsorjning","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\u00e4t - Utmaningar med l\u00e5geffektdesign - 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\/sv\/energi-stromforsorjning\/rohde-schwarz-test-mat-utmaningar-med-lageffektdesign\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rohde &amp; Schwarz test &amp; m\u00e4t - Utmaningar med l\u00e5geffektdesign - KnowHow\" \/>\n<meta property=\"og:description\" content=\"Energif\u00f6rbrukning \u00e4r en viktig prestandaparameter f\u00f6r n\u00e4stan alla elektronikenheter. 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