For the Netherlands railway company a system for inspection of the degree of wear of the contact wires is being developed. With an active sensor the reflective under-surface of the overhead wire is illuminated with a laserbeam and reflected radiation is detected by fast CCD detectors. With the sensor at a train speed of 90 km/hr. every cm of max. 4 overhead wires will be inspected, determining the wire thickness and the appearance of holes caused by local sparks. For illumination and detection a special optical system has been developed. From the railway inspection waggon measurements have been perfomed with a prototype system, demonstrating the feasibility of the measuring principle.
Automatic inspection of railway overhead wires
Automatische Pruefung von Eisenbahnhochleitungen
Proceedings of SPIE, ECO 1,Industrial Inspection ; 1010 ; 107-117
1989
11 Seiten, 10 Bilder
Aufsatz (Konferenz)
Englisch
Railway overhead line inspection vehicles
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