Train speed measuring device and method
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United States of America Patent
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Aug 11, 2015
Grant Date -
Apr 25, 2013
app pub date -
Oct 16, 2012
filing date -
Oct 19, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided are a train speed measuring device and method. The train speed measuring device includes: at least one first tachometer disposed at an axle of a trailer car and for outputting a pulse signal according to a wheel revolution of the trailer car; at least one second tachometer disposed at an axle of a motor car and for outputting a pulse signal according to a wheel revolution of the motor car; at least one speed measuring unit for measuring speed values on the basis of pulse signals outputted from the at least one first tachometer and the at least one second tachometer; and a speed calculating unit for calculating the speed of the train on the basis of the measured speed values.
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