Device for the transmission of information through the rails between a railway track and a group of vehicles running along this track
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United States of America Patent
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-
Dec 13, 1983
Grant Date -
N/A
app pub date -
Mar 17, 1980
filing date -
Jul 17, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for transmitting data long rails of a railway track for reception by a receiver mounted on a vehicle of the train. The system includes resonance circuits defining contiguous zones which are independent of a block system of the railway track. An insulative conductive loop is placed between the rails of the track and proximate the resonance circuits. An AC generator and modulation are provided to produce a modulated carrier frequency corresponding to the data to be transmitted and is coupled to the conductive loop. The receiver is positioned at the front of the train when the conductive loop is positioned near the downstream side of each zone and toward the rear of the train when the conductive loop is positioned toward the upstream side of each zone relative to the direction of train travel.
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