NEW CRITERION TO INCREASE THE INFORMATION CAPACITY OF THE PRESENT SYSTEM OF CONTINUOUS SIGNALING IN LOCOMOTIVES

UN NUOVO CRITERIO PER AUMENTARE LA CAPACITA DI INFORMAZIONE DELL'ATTUALE SISTEMA DI SEGNALAMENTO CONTINUO IN LOCOMOTIVA

The system of automatic block with coded circuits, used on the principal Italian railway lines, poses serious limits, with the only four codes envisaged (75, 120, 180 and 270 cycles per minute) to the adoption of higher speeds which would be possible with changes of routing of the present lines, for example, Bologna-Milan. The article describes a criterion to increase the number of codes which is compatible with the repeater equipment already in service, namely of also modulating the phase of the track current. This solution would appear to be particularly advantageous when the phase modulation is carried out with the same codes used in amplitude modulation for the simplicity of the modulators. A description is then given of a possible system of phase modulation detection to be used on board the locomotives.

• Corporate Authors:

  Collegio Ingegneri Ferroviari Italiani

  Piazza Croce Rossa
  Rome,   Italy 
• Authors:
  • Caporossi, R
• Publication Date: 1977-3

Language

• Italian

Media Info

• Pagination: p. 177-180
• Serial:
  • INGEGNERIA FERROVIARIA
  • Volume: 32
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Cab signals; Data communications; Railroad signaling; Railroad signals; Railroads; Signal devices; Track circuits
• Geographic Terms: Italy
• Old TRIS Terms: Coded track circuits; Interlocking
• Subject Areas: Operations and Traffic Management; Railroads;

Filing Info

• Accession Number: 00164421
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Nov 9 1977 12:00AM