Railway track circuits

Details Railway track circuits Railway track circuits

B - Operations, Transporting

61

L

B61L 1/18 (2006.01) B61L 23/16 (2006.01)

Patent

CA 2079864

- 16 - ABSTRACT railway track circuit system is described, in which there is a transmitter 15,16 and receiver 19,20 at each end of a track circuit section 4. Each receiver receives signals from the transmitter at the opposite end of the section and the received signals are analysed to determine whether a vehicle is present in the track circuit section. Where adjacent track circuit sections are also provided with a transmitter and a receiver at each of their ends, the transmitters 14,17 and receivers 18,21 at adjacent ends of adjacent track sections 3,5 can be connected to a track circuit unit 8,9 to allow that unit to check, when a vehicle appears to have left one track circuit section, that it has entered an adjacent section. (Figure 2)

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