A COMMUNICATIONS SYSTEM FOR LONG TRAINS
Transmission lines have not been used as communications links on long freight trains for lack of a suitable inter-car connector. Metal-to-metal contacts have not been dependable in the harsh railway environment. In this project radiative, inductive and capacitive connectors were studied. Only the inductive coupler appeared to offer a practical solution to the problem. A tuned inductive coupler was developed with the following specifications: transmission coefficient 0.7, bandwidth 20 kHz, centre frequency 100 kHz, power dissipation 3 watts. The mechanical arrangement for holding the two windings of the coupler in contact employs the same principle as the "clad-hand" coupler used in the airpressure system. Thus, the electrical contact is made through magnetic fields and the mechanical aspects employ proven railway practice. It is recommended that a set of prototype couplers be field tested.
- Find a library where document is available. Order URL: http://worldcat.org/isbn/7
Canadian Institute of Guided Ground TransportQueen's University
Kingston, Ontario K7L 3N6, Canada
- AITKEN, GJM
- Publication Date: 1975-2-3
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 75 p.
- TRT Terms: Communication systems; Communications; Control devices; Couplers; Electric circuits; Positive train control; Railroads
- Uncontrolled Terms: Inductive coupling
- Old TRIS Terms: Trainlines
- Subject Areas: Railroads;
- Accession Number: 00141127
- Record Type: Publication
- Source Agency: Canadian Institute of Guided Ground Transport
- ISBN: 7
- Report/Paper Numbers: CIGGT Rept. N.75-4 Final Rpt.
- Files: TRIS
- Created Date: Oct 26 1976 12:00AM