Mikrostrukturierte Energiewandler für energieautonome SensorenMicrostructured Energy Harvesters for Energy Autonomous Sensors

Zusammenfassung Diese Arbeit präsentiert mikrostrukturierte Energiewandler zur Stromversorgung energieautarker Sensoren. Vibrationsbasierte Energiewandler mit Betriebsfrequenzen von 100 bis 1000 Hz nutzen den piezoelektrischen oder den elektrostatischen Effekt. Wir beschreiben außerdem ein drahtloses energieautonomes Sensorsystem, welches von einem Vibrationswandler gespeist wird und alle 15 Sekunden Temperaturmessungen drahtlos überträgt. Mikrostrukturierte Thermoelemente werden darüber hinaus als kostengünstige Lösung für thermoelektrische Generatoren angesehen. Diese sollen bei geringen Temperaturunterschieden und schwachen Wärmeströmen arbeiten, die z. B. für menschliche Körperwärme typisch sind.

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