In this paper a sensor node able to monitor the growth of a crack in a wheelset, by means of axle box acceleration measurements, is described and the first results of experimental field tests are presented. The sensor node is equipped with a wireless transmission system and a bimorph piezoelectric energy harvester. Moreover, the node is inserted in a specific suspension system, which allows the measurement of low frequency accelerations (around wheel revolution and its first multiples) and amplifies the energy recovered by the harvester. The first tests on a freight convoy along a traditional Italian railway line show that the designed sensor node is able to acquire, analyse and transmit data with a frequency which depends on the power needed by the operation cycle.

Smart sensor for detection of derailment on freight trains

COSTA, ANDREA;DIANA, GIORGIO;MILANI, DAMIANO;RESTA, FERRUCCIO;TOMASINI, GISELLA MARITA;
2016

Abstract

In this paper a sensor node able to monitor the growth of a crack in a wheelset, by means of axle box acceleration measurements, is described and the first results of experimental field tests are presented. The sensor node is equipped with a wireless transmission system and a bimorph piezoelectric energy harvester. Moreover, the node is inserted in a specific suspension system, which allows the measurement of low frequency accelerations (around wheel revolution and its first multiples) and amplifies the energy recovered by the harvester. The first tests on a freight convoy along a traditional Italian railway line show that the designed sensor node is able to acquire, analyse and transmit data with a frequency which depends on the power needed by the operation cycle.
Proceedings of the 11th World Congress on Railway Research
energy harvester, crack detection, railway vehicles, freigth trains
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/995914
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