Cab signal apparatus and method

B - Operations – Transporting – 61 – L

Patent

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Details

B61L 13/04 (2006.01) B61L 3/24 (2006.01) B61L 23/16 (2006.01) B61L 25/02 (2006.01)

Patent

CA 2136378

An apparatus and method for supplying cab signal to a rail vehicle on a section of track composed of sequentially adjacent railway track circuit blocks. Respective receivers of each track circuit block are monitored for the presence of a vehicle within that block. The cab signal apparatus is controlled to transmit a signal to a block when the output from the respective receiver in that block indicates a different condition from the adjacent receiver of an adjacent block. Output voltages from adjacent receivers are compared to enable transmission of a cab signal. Comparison of adjacent receiver outputs is accomplished through use of a diode bridge.

Appareil et méthode permettant de transmettre un signal de cabine à un véhicule ferroviaire sur une partie d'une voie ferrée dotée d'une série de blocs-circuits adjacents. Les récepteurs de chaque bloc-circuit permettent de vérifier la présence d'un véhicule dans ce bloc. L'appareil de signalisation de cabine reçoit la commande de transmettre un signal à un bloc lorsque la sortie provenant du récepteur associé à ce bloc indique un état différent de celui du récepteur du bloc voisin. Les tensions de sortie des récepteurs voisins sont comparées afin de permettre la transmission d'un signal de cabine. La comparaison des sorties des récepteurs voisins est effectuée au moyen d'un pont de diodes.

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