Multicolor LED-Based Temperature and O2-Pressure Sensor

Conference: Sensoren und Messsysteme 2010 - 15. ITG/GMA-Fachtagung
05/18/2010 - 05/19/2010 at Nürnberg

Proceedings: Sensoren und Messsysteme 2010

Pages: 6Language: englishTyp: PDF

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Lima, Frederico; Lange, Volker; Kühlke, Dietrich (Hochschule Furtwangen University, CEE, Robert Gerwig Platz 1, 78120 Furtwangen, Germany)
Borisov, Sergey (Graz University of Technology, Technikerstr. 4, 8010 Graz, Austria)

First results for luminescence-based dual sensing of environmental parameters with a multicolor LED are presented. With this method, cross-sensitivities of the luminescence material between such environmental properties can be eliminated. A very compact and inexpensive sensor setup is possible by use of an LED as excitation source and another LED simultaneously as luminescence detector. The parametrization of the cross-sensitivity will be discussed and possible further simplifications of the sensor will be pointed out.