Method and apparatus for detection of the occupied or free...

B - Operations – Transporting – 61 – L

Patent

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Details

B61L 1/18 (2006.01)

Patent

CA 2652414

The invention relates to a method and a device for detecting the occupied or free status of a section of track (1a, 1b, 1c; 4) by means of a track current circuit, into which a transmitted signal is introduced and from which at least one detection signal is extracted. According to the invention a longer maximum possible track length may be achieved, wherein the track current circuit (4) is divided into part sections (6) overlapping over half the length thereof, the transmitted signal being introduced in the middle of each part section (6) into which a rail vehicle enters, detection signals being extracted at both ends of the part section (6) or further transmitted over adjacent part sections (6) to the track circuit ends and extracted there. Each part section (6) is provided in the centre and the ends thereof with transceiver devices (5), the centre transceiver device (5) functioning as transmitter (S) and the end transceiver devices (5) as receivers (E1, E2).

L'invention concerne un procédé et un dispositif permettant de déterminer si une partie de voie ferrée (1a, 1b, 1c; 4) est occupée ou libre, au moyen d'un circuit de voies, dans lequel un signal émis est introduit et à partir duquel au moins un signal de détection est extrait. L'objectif de l'invention est d'obtenir un rallongement maximal de la longueur du circuit de voies possible. A cet effet, le circuit de voies (4) est réparti dans les sections (6) partielles couvrant la moitié des voies et le signal d'envoi est introduit de manière centrale dans chaque section (6) partielle, sur laquelle un véhicule à rails se déplace. Des signaux de détection sont extraits aux deux extrémités de la section (6) partielle ou transférés par l'intermédiaire des sections (6) partielles adjacentes vers les extrémités du circuit de voies, de manière à y être extraits. Chaque section (6) partielle est centrale et ses extrémités sont dotées d'ensembles (5) émetteur-récepteur, ledit ensemble (5) émetteur-récepteur central étant utilisé en tant qu'émetteur (S) et les ensembles (5) émetteur-récepteur étant utilisé en tant que récepteur (E1, E2).

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