Device for automatically locating railway vehicle

Abstract

On vehicles provided with a single reception antenna or with several adjacent reception antennas (A3, A4) coupled to the go-and-return lines of a track conductor (L), the phase angle of the reception voltage is retained when the reception level falls below a particular reception level (SW1). If the level (SW2) of the reception voltage rises again, the actual phase position of the reception voltage (UA3) can be compared with the retained reception voltage. When the phases of the reception voltages to be compared are in opposition, one concludes that the vehicle is passing over a track conductor crossing (K). When the phases of the reception voltages to be compared are the same, this indicates a passing transmission disturbance. The phase angle of the comparison voltage is preferably retained by a flywheel oscillator. The difference in time between actual reception voltage (UA3) and comparison voltage is preferably determined by evaluating the peak values of both voltages.

Description

technical field [0001] The invention relates to a self-positioning device for a rail vehicle traveling on a railway line which is divided into sections by means of crossing, externally fed sensor conductor loops. Background technique [0002] Such a device is known, for example, from DE-PS 11 76 698 . Therein, the self-positioning of the locomotive is reported in connection with a system for driving safety with a linear signal transmission between the locomotive and the railway line. This kind of locomotive is inductively coupled with the sensing wires laid on the track through the coupling frame, and the important data about locomotive control is transmitted from the remote console through the sensing wires. The coupling wire holders are arranged at an angle of 90° to each other and at a 45° angle to the sensing wire loop. By means of this line stand arrangement FM information can be received by or sent to the center even when passing through line crossing points. Furthe...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to further improve the self-positioning device of the aforementioned railcar, so that even when the locomotive has a single antenna or receiving antennas that are parallel to each other and are respectively coupled on the return wire of the sensing wire, the The phase of the received voltage also enables unambiguous identification of sensing line crossing locations

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