Information generating apparatus using elastic waves
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United States of America Patent
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-
Sep 18, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1999
filing date -
Aug 20, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to an information generating apparatus for transmitting and receiving elastic waves through a rail for a train. The information generating apparatus comprises elastic wave transmitting means for transmitting elastic waves to said rail, elastic wave receiving means for receiving elastic waves transmitted from said elastic wave transmitting means through said rail, and information generating means for generating information that is necessary for controlling/monitoring associated elements of a control system for performing control operations on said train, based on an elastic wave reception signal received by said elastic wave receiving means. The information generating means has judgment means for making a judgment on presence/absence of rupture in said rail, based on a reception condition of an elastic wave received by said elastic wave receiving means compared with a predetermined condition and for generating information representing presence/absence of rupture in said rail.
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