{"id":76791,"date":"2020-04-04T19:42:31","date_gmt":"2020-04-04T17:42:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/amerikanczy-predlozhili-sobirat-energiyu-dlya-interneta-veshhej-iz-magnitnyh-polej-blizhajshej-elektroprovodki"},"modified":"2020-04-04T19:42:31","modified_gmt":"2020-04-04T17:42:31","slug":"amerikanczy-predlozhili-sobirat-energiyu-dlya-interneta-veshhej-iz-magnitnyh-polej-blizhajshej-elektroprovodki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/amerikanczy-predlozhili-sobirat-energiyu-dlya-interneta-veshhej-iz-magnitnyh-polej-blizhajshej-elektroprovodki","title":{"rendered":"Amerikanerna f\u00f6reslog att samla energi f\u00f6r Internet of Things fr\u00e5n magnetiska f\u00e4lt av n\u00e4rliggande ledningar","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Temat om att utvinna elektricitet fr\u00e5n \u00abluften\u00bb \u2013 fr\u00e5n elektromagnetisk brus, vibrationer, ljus, fuktighet och mycket mer \u2013 intresserar b\u00e5de civila forskare och deras kollegor med uniformer. De har bidragit till detta \u00e4mne forskare<\/a><\/noindex> fr\u00e5n Pennsylvania State University. Fr\u00e5n de magnetiska f\u00e4lten i den n\u00e4rliggande elektriska ledningen lyckades de utvinna elektricitet med en effekt p\u00e5 flera milliwatt, vilket \u00e4r tillr\u00e4ckligt f\u00f6r att driva en digital v\u00e4ckarklocka direkt.<\/p>\n

\"Amerikanerna<\/p>\n

I en artikel publicerad i Energy & Environmental Science<\/a><\/noindex> ber\u00e4ttade forskarna om sina ber\u00e4kningar och tillverkningen av speciella omvandlare f\u00f6r elektromagnetiska f\u00e4lt till elektrisk str\u00f6m. Utvinningskomponenten \u00e4r utformad som en flerlagers tunn platta med en permanent magnet i den fria \u00e4nden (den andra \u00e4nden av plattan \u00e4r ordentligt f\u00e4st). Sj\u00e4lva plattan best\u00e5r av ett lager piezoelektriskt material och ett lager av magnetostriktivt<\/a><\/noindex> material (Fe85B5Si10 Metglas).<\/p>\n

Det magnetostriktiva materialet \u00e4r intressant eftersom dess volym och linj\u00e4ra dimensioner f\u00f6r\u00e4ndras vid f\u00f6r\u00e4ndringar i magnetiseringstillst\u00e5nd. Det besv\u00e4rande surrandet fr\u00e5n spolar i grafikkort \u00e4r oftast magnetostriktiva \u00e4ndringar i k\u00e4rnorna. I ett v\u00e4xlande magnetf\u00e4lt fr\u00e5n vanlig elektrisk ledning med en frekvens p\u00e5 50 eller 60 Hz b\u00f6rjar plattan av Metglas vibrera och deformera den piezoelektriska platta som \u00e4r limmad p\u00e5 den. Det b\u00f6rjar flyta str\u00f6m i n\u00e4tverket kopplat till plattorna.<\/p>\n

\"Amerikanerna<\/p>\n

Trots detta producerar det magnetostriktiva materialet i kombination med piezoelektrik endast upp till 16 % av den elektricitet som genereras av komponenten. Den st\u00f6rsta produktionen kommer fr\u00e5n vibrationerna av den permanenta magneten i det elektromagnetiska f\u00e4ltet. Det p\u00e5st\u00e5s att sp\u00e4nningen p\u00e5 komponenten n\u00e5r upp till 80 V i ett f\u00e4lt p\u00e5 300 \u00b5T. Men det mest v\u00e4rdefulla \u00e4r att den utvecklade komponenten kunde utvinna tillr\u00e4ckligt med energi f\u00f6r att driva digitala klockor direkt i ett f\u00e4lt p\u00e5 mindre \u00e4n 50 \u00b5T, p\u00e5 ett avst\u00e5nd av 20 cm fr\u00e5n elektrisk ledning.<\/p>\n

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Deras forskning utf\u00f6rdes av forskarna vid Pennsylvania State University tillsammans med forskare fr\u00e5n Virginia Tech och en grupp fr\u00e5n USA:s Armys Command for Rapidly Innovative Technologies.<\/p>\n

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K\u00e4lla: 3dnews.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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