Interference current monitoring
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 21, 2002
Grant Date -
Aug 16, 2001
app pub date -
Dec 7, 2000
filing date -
Dec 16, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Interference currents in railway trackside signaling apparatus are monitored by first and second transducers adapted to measure the traction current and frequency, respectively, of power electronics in traction systems of railway vehicles. An instantaneous interference current value is determined, based on data output from the first transducer. Data output from the second transducer is used to determine digital filter outputs for the trackside signaling frequencies for the interference current value. The determined interference current value and digital filter output values are recorded on a data storage medium and displayed on a display unit.
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