Use of fiber optic sensors for measurement railway vibrations

This paper presents the results of an investigation about the involvement of the tram vibration in nearby buildings. The overall objective is studying vibration generated in urban environments by tram, transmission to the ground and receiving them by the constructions of the environment. Vibrations can generate noise and vibrations in buildings. That is why it is necessary to generate a performance protocol to characterize the level of vibration affecting rail, road infrastructure and sidewalks and nearby buildings, to assess the influence of the train (speed , type, profile wheel ,..), rail (area of rolling) and route of step and finally define interim corrective measures. In this study will be undertaken measures levels (energy) and vibration frequencies of excitement in route through optical techniques: optical fiber networks with distributed Bragg sensors. Measuring these vibrations in different configurations constructive allow us to evaluate the suitability of different sections for different types of uses or environments. This study aims to help improve the safety of the built environment of a railway operation, in turn increasing the comfort for passengers and reducing the environmental impact to the environment.