Deep Monitoring of Audio Frequency Track Circuits

2014 ◽  
Author(s):  
L. Saade ◽  
P. Weston ◽  
C. Roberts
Keyword(s):  
Audio Frequency ◽  
Track Circuits

Comparative analysis of modern jointless audio frequency track circuits

2019 ◽  
pp. 59-63 ◽  
Author(s):  
Valeriy Alexandrovich Sisin ◽  
◽  
Maxim Igorevich Shestakov ◽  
Keyword(s):  
Comparative Analysis ◽  
Audio Frequency ◽  
Track Circuits

scholarly journals Reducing noise influence on an audio frequency track circuit

2019 ◽  
Vol 294 ◽  
pp. 03015
Author(s):  
Inna Saiapina ◽  
Mykhailo Babaiev ◽  
Olha Аnanіevа
Keyword(s):  
Electromagnetic Interference ◽  
Pulse Generator ◽  
Signal To Noise Ratio ◽  
Single Pulse ◽  
Audio Frequency ◽  
Railway Transport ◽  
Traction Current ◽  
Useful Signal ◽  
Track Circuits ◽  
Track Circuit

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.

Sign in / Sign up

Export Citation Format

Share Document