Derailment detection with Fibre Optic Sensing / Distributed Acoustic Sensing (FOS/DAS)

, using the existing dark fibre along the SBB rail network. This technology has the potential to implement continuous monitoring along the route. With this RFI, SBB is seeking information from interested bidders in order to record the current state of the art and possible approaches. Reliable derai

lment detection requires that the acoustic/seismic signature of a derailment in the DAS signal can be characterised and distinguished from normal operational activities (regular traffic, track construction, environmental influences, etc.).