MATEC Web Conf.
Volume 294, 20192nd International Scientific and Practical Conference “Energy-Optimal Technologies, Logistic and Safety on Transport” (EOT-2019)
|Number of page(s)||6|
|Section||Interoperability, Safety and Certification on Transport|
|Published online||16 October 2019|
Reducing noise influence on an audio frequency track circuit
State University of Infrastructure and Technologies, Telecommunication Technologies and Automation Department, 9 Kyrylivska str., 04071, Kyiv, Ukraine
2 Ukrainian State University of Railway Transport, Department of electroenergy, electrical equipment and electromecanics, 7 Feierbakh sq., 61050 Kharkiv, Ukraine
3 Ukrainian State University of Railway Transport, Department of automation and computer telecontrol train traffic, 7 Feierbakh sq., 61050 Kharkiv, Ukraine
* Corresponding author: firstname.lastname@example.org
In connection with electromagnetic interference influence on the track circuits, the purpose of the research is finding the means to increase the noise immunity of an audio frequency track circuit. The authors propose a new engineering solution, which enables reducing the effect of noises on the input of the track receiver in the intervals between signal current pulses. The proposed noise-immune audio frequency track circuit is based on inserting a delay line, an adjustable single-pulse generator and a controlled electronic switch into the existing audio frequency track circuit equipment. To analyze its efficiency, the operation of the audio frequency track circuit was simulated under conditions of traction current disturbances, impulse and fluctuation interferences with the known parameters. The results show that proposed device for railway transport allows to increase a signal-to-noise ratio on the track receiver input from 8% to 30%, depending on the interference parameters and the level of the useful signal.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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