RT Journal Article SR Electronic A1 Nedoma, Jan A1 Kostelansky, Michal A1 Fridrich, Michael A1 Frnda, Jaroslav A1 Pinka, Miroslav A1 Martinek, Radek A1 Novak, Martin A1 Zabka, Stanislav T1 Fiber Optic Phase-Based Sensor for Detection of Axles and Wheels of Tram Vehicles JF Communications - Scientific Letters of the University of Zilina YR 2020 VO 22 IS 3 SP 119 OP 127 DO 10.26552/com.C.2020.3.119-127 UL https://komunikacie.uniza.sk/artkey/csl-202003-0013.php AB This paper presents a novelty approach to usage of the fiber-optic phase-based sensor in railway transportation. We designed and tested the real deployment of this sensor working on the principle of light interferences within optical fibers. The proposed construction of the sensor allowed to increase the sensitivity and thanks to this can be detected and calculated individual axles and wheels of tram vehicles. We performed long-time period measurements (April to September 2019) in diverse climatic conditions, including measurements of 642 tram passages (several different construction types) in real urban traffic. The detection accuracy level was slightly above 99.4 %.