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Railway tunnel, source: Amberg Group

Amberg Group develops multisensory system for tunnel inspection

Swiss engineering company Amberg Technologies, part of Amberg Group, together with its partners is developing a new compact multisensory system for tunnel inspection. The solution will allow collecting data on geometry, surface structure, water inlets in tunnels in a single measuring procedure and provide the data in a digital format.

To develop the new system, Amberg Group and the partners launched the ‘OpOrTunIty’ (Operation Oriented Tunnel Inspection System) project in October 2018. The participants made the main accent on the multisensory system that is capable to collect high-resolution and georeferenced data on construction geometry, surface structure and humidity of the tunnel wall in a single measurement run.

A high-speed scanner records the entire tunnel wall using several lasers with different wavelengths. The laser also provides photorealistic 2D images showing small objects or cracks of less than one millimetre. The system is eye-safe and works independently of lighting conditions. To detect water inlets, the engineers use an additional multispectral measuring unit. All the data will be integrated into a planning system.

New offer

In order to carry out the ‘OpOrTunIty’ project, Amberg Group has joined its forces with the AKG company and Fraunhofer Institute for Physical Measurement Techniques from Germany as well as with Elaborarium from Spain. The partners are expected to offer new inspection services based on the multisensory system. They regard a future system as crucial to make the tunnel monitoring more affordable and convenient. The new solution will also optimise the construction planning of tunnels.

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Author: Mykola Zasiadko

Mykola Zasiadko is editor of online trade magazines RailTech.com and RailFreight.com.

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