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Schwingungssensor - Schwingungsüberwachung mit optischen Sensoren

31.03.2014

Der Schwingungssensor arbeitet mit zwei optischen Sensoren mit Fiber-Bragg-Gittern in Kombination mit einem Biegebalken und einer breitbandigen Lichtquelle. Beim Durchlauf durch die beiden FBG-Sensoren wird die Intensität des optischen Signals in Abhängigkeit der Biegung geändert. Die Intensität des Lichts kann einfach mit einem optischen Detektor gemessen werden. Eine aufwändige Analyse mittels eines Spektrumanalysators entfällt. Aufgrund der hier gewählten Technologie ist es möglich, Schwingungen bis zu einer Frequenz von 100 kHz zu messen. Die zur Herstellung notwendigen Technologien gehen nicht über die konventionellen Technologien hinaus, so dass bei der Produktion des Sensors auf die bekannten Prozesse zurück gegriffen werden kann. Entwickelt wurde die Technologie des Schwingungssensors in erster Linie zur Überwachung von Pipelines. Sie kann aber in allen Gebieten eingesetzt werden, in denen mechanische Schwingungen bis zu 100 kHz detektiert werden sollen.

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