P3.2 - Printed Capacitive Sensors for Contactless Ice Detection in Automotive Liquid Conveyor Pipes
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings Sensor 2017
- P3 - Industrial Electronics
- J. Happel, J. Döring, K. Krieger - ITEM University Bremen (Germany), J. Deitschun, D. Godlinski - Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Bremen (Germany)
- 621 - 626
This publication focuses on the development of an innovative, low-cost sensor for the detection of ice formation in conveyor pipes of vehicles. The measurement principle is based on the contactless determination of the relative permittivity of a medium by capacitive sensors. In comparison to water, ice has a decreased relaxation frequency through crystallization below the freezing point. Capacitive sensor structures for permittivity measurement were applied on a polymer pipe by functional printing, which can be installed in the conveying systems in the area of the feed lines. Due to its low-cost and universal design, the sensor can be used in all applications where the integrability and costs of an installed sensor system play a major role.