Investigation of transient processes in tonal track circuits
DOI:
https://doi.org/10.15802/stp2013/16567Keywords:
tonal track circuits, track receiver, transient processes, complex frequency characteristic, spectrum, distortionAbstract
Purpose.The purpose of investigation is the search for new analysis methods of tonal track circuits, the definition of signal waveform at the track receiver input. Methodology. The method of frequency characteristics was used for investigation of transient processes. Signal spectrum at the output of track generator was determined using fast Fourier transform. Signal spectrum at the input of track receiver was calculated after determining complex frequency characteristic of the tonal track circuit. To carry out such calculations the frequency characteristics of rail line parameters have been obtained resulting interpolation of reference data and the frequency characteristic of track receiver impedance has been calculated. To determine the signal time dependence at the input of track receiver the inverse fast Fourier transform was applied.Findings. The causes of signal distortion in the tonal track circuits have been clarified.Track filter and input filter of track receiver restrict upper and lower sidebands of the signal spectrum, which leads to prolonging the rise and fall of signal pulses.The rail line, cable lines, and the devices for protection and alignment do not affect the shape of signal pulses, and change only their amplitude. At influence of rise and fall of signal pulses in the connected RLC circuits of receiver arise free oscillations at the resonance frequencies. As a result of the interference of these oscillations occur beats and appears additional pulse. Originality. The method for the analysis of tonal track circuits has been improved that allows determining not only the level but also the time dependence of signal at the track receiver for any input action. Practical value. Obtained time dependence of signal at the track receiver input will be useful in the development of the new more perfect methods for determining the state of tonal track circuit. Proposed method of track circuit analysis may be used to search for new more informative form of signal current.
References
Аrkatov V.S., Bazhenov A.I., Kotlyarenko N.F. Relsovyye tsepi magistralnykh zheleznykh dorog [Track circuits of mainline railways]. Мoscow, Тransport Publ., 1992. 384 p.
Honcharov K.V. Issledovaniye tsifrovogo putevogo priyemnika tonalnykh relsovykh tsepey [Investigation of digital track receiver of the tonal track circuits]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011, issue 37, pp. 180-185.
Honcharov K.V. Korrelyatsionnyy putevoy priyemnik tonalnykh relsovykh tsepey [Correlation track receiver of the tonal track circuits]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011, issue 38, pp. 188-193.
Kotelnikov V.A., Nikolayev A.M. Osnovy radiotekhniki. Chast І [Fundamentals of Radio Engineering. Part I]. Moscow, Radio i svyaz Publ., 1954. 373 p.
Кulik P.D., Udovikov O.O., Basov V.I. Praktychnyi posibnyk z tekhnichnoho utrymannia apparatury tonalnykh reikovykh kil [Practical guide to technical facility retention of tonal track circuits]. Kyiv, Mintranszviazku Ukrainy Publ., 2006. 236 p.
Kulik P.D., Ivakin N.S., Udovikov A.A. Tonalnyye relsovyye tsepi v sistemakh ZHAT: postroyeniye, regulirovka, obsluzhivaniye, poisk i ustraneniye neispravnostey, povysheniye ekspluatatsionnoy nadezhnosti [Tonal track circuits in railway automatic and telemechanic systems: buildup, control, service, searching and eliminating of failures, maintainability enhancement]. Кyiv, Мanufaktura Publ., 2004. 288 p.
Maystrenko V.A., Popov V.F. Statisticheskiye metody priyema i obrabotki signalov v sistemakh radiosvyazi [Statistical methods for receiving and processing signals in radio communication systems]. Omsk, OmGTU Publ., 2009. 120 p.
Razgonov A.P., Zhuravlev A.Yu., Yashchuk Ye.I., Lebedev A.Yu., Razgonov S.A. O povyshenii nadezhnosti relsovykh tsepey s ispolzovaniyem tsifrovoy obrabotki signalov [About increasing the reliability of track circuits using digital signal processing].Tezisy IV mezhdunarodnoy nauchno-prakticheskoy konferentsii “Elektromagnitnaya sovmestimost i bezopasnost na zheleznodorozhnom transporte” [Proc. of the 4th Int. Sci. and Practical Conf. “Electromagnetic compatibility and safety on railway transport”]. Dnipropetrovsk, 2011, pp. 65-66.
Serdyuk T.N., Zavgorodniy A.V., Gavrilyuk V.I. Izmereniye elektromagnitnykh pomekh v obratnoy tyagovoy seti [Measurement of electromagnetic interference in the return traction network]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2009, issue 29, pp. 134-139.
Tarasov Ye.M. Matematicheskoye modelirovaniye relsovykh tsepey s raspredelennymi parametrami relsovykh liniy [Mathematical modeling of the track circuits with distributed parameters of rail lines]. Samara, SamGAPS Publ., 2003. 118 p.
Demirchyan K.S., Neyman L.R., Korovkin N.V., Chechurin V.L. Teoreticheskiye osnovy elektrotekhniki. Tom 2 [Fundamentals of Electrical Engineering. Vol. 2]. Saint Petersburg, Piter Publ., 2003. 572 p.
Fedorov N.Ye. Sovremennyye sistemy avtoblokirovki s tonalnymi relsovymi tsepyami [Modern automatic block systems with tonal track circuits]. Samara, SamGAPS Publ., 2004. 132 p.
Cheptsov M.M., Boinik A.B., Kuzmenko D.M. Metody syntezu syhnalno-protsesornoi tsentralizatsii strilok i syhnaliv [Methods of synthesis signal processor centralizing of switches and signals]. Donetsk, DonIZT Publ., 2010. 181 p.
Gavrilyuk V., Zavgorodnij A., Myrgorodska A. Computer simulation of electromagnetic interference from railway electric power system harmonic. Archives of Transport System Telematics, 2009, vol. 2, issue 1, pp. 33-37.
Gavrilyuk V., Zavgorodnij A. Statistical analysis of electromagnetic interference between AC traction current and track circuits. Archives of Transport System Telematics, 2010, vol. 3, issue 4, pp. 14-18.
Serdyuk T., Gavrilyuk V. Automated measured of rail circuits parameters and harmonics of return tractive current to improve safety of movement. Archives of Transport System Telematics, 2009, vol. 2, issue 3, pp. 17-21.
Theeg G., Vlasenko S. Railway Signalling and Interlocking. International Compendium. Hamburg, Eurailpress Publ., 2009. 448 p.
Downloads
Published
How to Cite
Issue
Section
License
Copyright and Licensing
This journal provides open access to all of its content.
As such, copyright for articles published in this journal is retained by the authors, under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0). The CC BY license permits commercial and non-commercial reuse. Such access is associated with increased readership and increased citation of an author's work. For more information on this approach, see the Public Knowledge Project, the Directory of Open Access Journals, or the Budapest Open Access Initiative.
The CC BY 4.0 license allows users to copy, distribute and adapt the work in any way, provided that they properly point to the author. Therefore, the editorial board of the journal does not prevent from placing published materials in third-party repositories. In order to protect manuscripts from misappropriation by unscrupulous authors, reference should be made to the original version of the work.
