Most railway tracks already utilize pre-existing, trackside fiber optic cable infrastructure, which makes fiber optic train and rail monitoring incredibly advantageous.
ASELSAN MIDAS-(R)ailway Multi Purpose Intelligent Distributed Acoustic Sensor rewarded with the "Best Innovation Award 2020" in big companies category in 6th ERCI Innovation Awards - using DAS technology to collect acoustic data and analyze it to detect intrusions on the railway
Using a system supplied by Frauscher, a fiber-optic cable is laid along the line, which uses rail defectoscopy to detect cracks or breaks in the rail by picking up the vibrations produced by the train passing by.
Acoustic Sensing - A train’s vibration pattern as it progresses its journey is picked up by lineside sensing equipment, usually a fiber optic cable....Installations exist worldwide, including on Network Rail and London Underground.
Fiber optic sensors, which work on the basis of Distributed Acoustic Sensing (DAS), provide comprehensive access to a wide range of information surrounding the railway....These solutions allow an overview of the entire railway network, including rolling stock, to be formed in real-time.