INDUCTIVE COUPLING FOR TRANSMISSION OF BRAKING SIGNALS IN LONG FREIGHT TRAINS
The tuned, inductively-coupled connector proposed in CIGGT Project 1.17 has been carried to a state of development where it can be considered a viable signal-carrying inter-car connector for long freight trains. The transmission efficiency of the ferrite-cored device is 98 percent, with a useful bandwidth of 100 kHz. Computer simulations of 1 to 100 cascaded couplers, based on an accurate circuit model, and tests on 32 experimental connectors, have demonstrated that 0.1 watts, sufficient to operate a control solenoid, can be delivered to up to 40 cars having simple resistive loads, or up to 100 cars with more sophisticated demand-regulating loads. If the lines can be fed from both ends, as would be possible from mid-train locomotives or a caboose, the number of cars between power sources could conceivably be as large as 80 or 200, depending on the on-board car equipment used. Mechanical and electrical tolerances have been established. The principal recommendation arising from this work is that the connector be field tested in the railway environment.
Canadian Institute of Guided Ground TransportQueen's University
Kingston, Ontario K7L 3N6, Canada
- AITKEN, GJM
- Publication Date: 1977-1
- Features: Appendices; Figures; References;
- Pagination: 31 p.
- TRT Terms: Air brakes; Brakes; Braking performance; Electric circuits; Remote control
- Uncontrolled Terms: Electropneumatic brakes; Inductive coupling
- Old TRIS Terms: Brake applications; Trainlines
- Subject Areas: Railroads; Vehicles and Equipment;
- Accession Number: 00163807
- Record Type: Publication
- Source Agency: Canadian Institute of Guided Ground Transport
- Report/Paper Numbers: CIGGT-77-4 Final Rpt.
- Files: TRIS
- Created Date: Nov 9 1977 12:00AM