Experimental investigation of the EM noise environment surrounding detector systems at Swedish railways

Projekt:

JVTC

Sammanfattning:
The close environment of railway tracks is heavily polluted by electromagnetic noise
from the railway system itself. The reliability of railway signalling, communication, and control
systems depends on good immunity to electromagnetic noise. There are sometimes false detector
signals indicating non-existing flat wheels and ghost trains. A possible reason for detector failures is
interference by transient voltage peaks in the detector system. Thus characterisation has been made
of the electromagnetic environment around the detector system located at the track. The
investigation shows that the typical electromagnetic environment is a combination of broadband
low-level noise, and rare fast transients of potentially harmful amplitudes.

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Författare: Åke Wisten ; Stefan Niska ; Jonas Ekman ; Dag Björklöf ; Jerker Delsing
Utgivare: IEEE
Utgivningsdatum: 2006
Diarienummer: TRV 2011/58769
ISSN: 1350-2352
Antal sidor: 6
Språk: Engelska
Kontaktperson: Per Olof Larsson Kråik, UHjbs