AUTOMATIC PROCESSING OF RECORDINGS MADE BY THE CASTAN SOUNDING AND MEASURING APPARATUS

LE TRAITEMENT AUTOMATIQUE DES ENREGISTREMENTS DE L'APPAREIL PALPEUR-MESUREUR CASTAN

The author recalls the problems involving gauge when train speeds are raised or special consignments are carried: calculation of the extreme distance between track centres, gauge problems resulting from obstructions (in particular structures, tunnels, overbridges); these problems, which were previously resolved manually, are now dealt with by computers. He explains in this article how the SNCF Calculating Centre processes automatically the data obtained on line by the Castan sounding and measuring apparatus used for determining the cross-section of tunnels and in track layout modification studies. Starting with a speed, a vehicle gauge and diagrams giving the outline of obstructions, the processing operations very quickly provide, for all sections perpendicular to the obstructions, in the form of figures and graphs, the clearance available between the wall and the vehicle, and subsequently the optimal positioning of the tracks. He concludes by giving some practical examples of application and referring to the possibilities opening in the future when a data bank is formed and information on fixed obstructions is stored in a data file.

• Corporate Authors:

  Societe Nationale des Chemins de Fer Francais

  92 rue Bonaparte
  75 Paris 6e,   France 
• Authors:
  • Blanc, P
• Publication Date: 1972-12

Language

• French

Media Info

• Features: Figures;
• Pagination: p. 785
• Serial:
  • REVUE GENERALE DES CHEMINS DE FER

Subject/Index Terms

• TRT Terms: Car clearances (Railroads); Data collection; High speed rail; Railroad tracks; Tunnels
• Old TRIS Terms: Clearances
• Subject Areas: Bridges and other structures; Railroads;

Filing Info

• Accession Number: 00047778
• Record Type: Publication
• Source Agency: International Union of Railways
• Files: TRIS
• Created Date: Dec 13 1976 12:00AM