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.

  • Availability:
  • Corporate Authors:

    Canadian Institute of Guided Ground Transport

    Queen's University
    Kingston, Ontario K7L 3N6,   Canada 
  • Authors:
    • AITKEN, GJM
  • Publication Date: 1975-2-3

Media Info

  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 75 p.

Subject/Index Terms

Filing Info

  • 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