Railway switches and signals – Train dispatching – Train telegraphy or telephony
Patent
1987-12-11
1990-06-12
Kashnikow, Andres
Railway switches and signals
Train dispatching
Train telegraphy or telephony
343770, 340933, B61L 2700
Patent
active
049326171
ABSTRACT:
A system for transmitting data and/or instructions and/or localization between a moving element and a control station. The system includes a hollow tube running parallel to the path of the moving element and constituting a waveguide, the tube having an emitting face which is pierced by a network of openings, and the moving element including a pair of microwave transmit and/or receive antennas. The network of openings on the emissive face of the hollow tube makes it possible to transmit two distinct electric field signals between the openings and the transmit and/or receive antenna. One of the signals serves to transmit data and/or instructions, and the other serves to measure the speed and the position of the moving element by detecting the presence of the second signal. Other systems relate to the application of such hollow tubes to automobile toll stations for monitoring an enclosure which is dangerous for personnel.
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"Waveguide Communication System for Centralized Railway Traffic Control", Kawakami et al, IEEE Transactions Vehicular Communications, vol. VC-13, No. 1, Sep. 1954, pp. 1-18.
Degauque Pierre
Duhot Denis
Heddebaut Marc
Mainardi Pierre
Kashnikow Andres
Le Mark T.
Societe Anonyme dite: ALSTHOM
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