Stromversorgung “on Air” per WiTricity o. PowerBeam wird Realität

7. Januar 2009 um 09:10 | boss | In Nice to have, Technologie | 60 Kommentare

Ich persönlich gehöre zu den Menschen, die nahezu permanent darunter leiden, dass die genutzten mobilen Geräte (Laptops, Handys, Kameras etc.) den Dienst mangels Strom versagen. Was wäre, wenn das ständige Bereithalten von diversen Ladegeräten ein Ende hätte? Auf Basis des neuen Standards (die Geräte arbeiten mit der WiTricity-Technologie, die nach der Resonanzfrequenz-Methode arbeitet) können diese Geräte zukünftig z.B. durch Ablegen auf speziellen Tischen geladen werden.

Dieses Verfahren scheint also keine reine Science Fiction Vision mehr zu sein. Auf einer der bekanntesten Messen für Consumer Elektronik CES in Las Vegas wurden nun von mehreren Herstellern erste Geräte vorgestellt. Die WiTicity Technologie könnte zunächst, vergleichbar zur WLAN Entwicklung z.B. über sogenannte Hotspots verbreiten (z.B. Flughäfen, Bahnhöfe etc.). Als Zukunftsvision gilt allerdings immer noch die Übertragung von gezielter Elektrizität durch die Luft (z.B. innerhalb eines Raums) beim diesem Standard.

Ein anderes Verfahren, das sog. PowerBeam Verfahren, sendet im Testbetrieb bereits bis zu 1,5 Watt als unsichtbaren Laser Strahl durch die Luft. Weit zu wenig für die effiziente Versorgung aktueller Geräte aber immerhin. Allerdings geschieht hier eine Umwandlung von Strom im Wärme (Laser) an eine Solarzelle des Empfangsgeräts, das dann die Wärme wieder Rückumwandelt. Kompliziert und wahrscheinlich nur durch direkte Ausrichtung der Geräte möglich. Beide Verfahren würden uns aber sicherlich dem Begriff “Wireless” deutlich näher bringen.


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