Articles | Volume 9, issue 1
J. Sens. Sens. Syst., 9, 133–141, 2020

Special issue: Sensors and Measurement Systems 2019

J. Sens. Sens. Syst., 9, 133–141, 2020

Regular research article 17 Apr 2020

Regular research article | 17 Apr 2020

Infrared-based sensor system for contactless monitoring of wetness and ice

Lakshan Tharmakularajah et al.

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A novel approach for road surface wetness detection with planar capacitive sensors
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J. Sens. Sens. Syst., 8, 57–66,,, 2019
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Cited articles

Destatis – Federal Statistical Office Germany: Fachserie 8 Reihe 7 Verkehr Verkehrsunfälle, Federal Statistical Office Germany – Destatis, Wiesbaden, 2018. a
Döring, J., Tharmakularajah, L., Happel, J., and Krieger, K.-L.: A novel approach for road surface wetness detection with planar capacitive sensors, J. Sensors Sensor Syst., 8, 57–66,, 2019.  a
Günzler, H. and Gremlich, H.-U.: IR-Spektroskopie: Eine Einführung, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany,, 2003. a
Harten, U.: Physik, Springer-Lehrbuch, Springer, Berlin, Heidelberg,, 2014. a
Holzwarth, F. and Eichhorn, U.: Non-contact sensors for road conditions, Sensors Actuat. A: Phys., 37–38, 121–127,, 1993. a, b
Short summary
In order to differentiate between a wet and a dry road surface, the water film height should be measured by using an infrared-based sensor system. By means of different wavelengths, it is also possible to distinguish between ice and water. In this article, a sensor system for the determination of the physical state of water on different surfaces using infrared LEDs and one photodiode is presented. This shall serve as a basis for the calculation of the road condition.