Scanner protects overhead line of railway tunnel

May 30th, 2018, Published in Articles: PositionIT

After 17 years of construction, the Gotthard Base Tunnel opened to passenger and cargo traffic on 11 December 2016. Deployed as a sensor solution for protection of the overhead line, LMS511PRO laser scanners from SICK help ensure that the trains operate on schedule through the 57 km railway tunnel. The scanners are incorporated into technical monitoring systems for protecting electrical section breaks along the overhead line in the tunnel. It is necessary to separate the overhead line into sections for operational and safety reasons. Suitable for outdoor use, the laser scanner from SICK is a 2D detecting and measuring sensor with a scanning angle of 190° and an operating range up to 80 m. It also offers adjustable angular resolutions between 0,167° and 1°. The system measures the pulse travel time of a diversified laser beam to an object – in this application, the pantograph – and the remission time from the object surface. Along with adaptable software filter algorithms, the laser scanner’s five-echo evaluation technology ensures dependable return pulse detection; it therefore produces reliable data regarding the presence, distance and position of the pantograph.

Contact Mark Madeley, SICK Automation Southern Africa, Tel: 010 060-0568,

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