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 performed with a prototype system, demonstrating the feasibility of the measuring principe.
Automatic Inspection Of Railway Overhead Wires
Industrial Inspection ; 1988 ; Hamburg,Germany
Proc. SPIE ; 1010
1989-02-15
Conference paper
Electronic Resource
English
Automatic inspection of railway overhead wires
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