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Open AccessArticle

New Instrumented Trolleys and A Procedure for Automatic 3D Optical Inspection of Railways

1
Department of Engineering, University of Perugia, 06125 Perugia, Italy
2
Department of Industrial Engineering, University of Florence, 50139 Florence, Italy
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(10), 2927; https://doi.org/10.3390/s20102927
Received: 16 April 2020 / Revised: 19 May 2020 / Accepted: 20 May 2020 / Published: 21 May 2020
(This article belongs to the Special Issue Smart Sensors in Structural Health Monitoring)
This paper focuses on new instrumented trolleys, allowing automated 3D inspection of railway infrastructures, using optical scanning principles and devices for defects and damage evaluation. Inspection of rolling components is crucial for wear evaluation and to schedule maintenance interventions to assure safety. Currently, inspection trolleys are mainly instrumented with 2D contact or optical sensors. The application of 3D non-contact digitizers proposed in this paper allows for a quick and more complete monitoring of the health conditions of railways, also in combination with a proper procedure for automatic 3D inspection. The results of the experimental tests using 3D portable optical scanners on railways are compared with results obtained by a trolley instrumented with 2D contact sensors. The results demonstrate the effectiveness of the trolleys mounting 3D handheld optical digitizers with proper automated software inspection procedures.
Keywords: automated inspection systems; rail inspection; 3D wear maps; 3D optical scanners automated inspection systems; rail inspection; 3D wear maps; 3D optical scanners
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MDPI and ACS Style

Valigi, M.C.; Logozzo, S.; Meli, E.; Rindi, A. New Instrumented Trolleys and A Procedure for Automatic 3D Optical Inspection of Railways. Sensors 2020, 20, 2927.

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