Train communication system
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United States of America Patent
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-
Jun 12, 1990
Grant Date -
N/A
app pub date -
Jun 8, 1987
filing date -
Jun 13, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication system for a railway train has a proving circuit for proving conditions of the railway track ahead of the train. The proving circuit comprises a transponder associated with at least one rail of the track to form a rail circuit therewith. The response of the transponder to an interrogater on the train is dependent upon the condition of the rail circuit.
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