Fibre optic track vibration monitoring system
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Track monitoring systems are a fundamental part of railroad safety. With the electrification and development of train traction control electronics, levels of electromagnetic interference (EMI) close to railroad monitoring systems are reaching critical levels. Unreliable track safety and fault monitoring systems could affect the efficient and safe functioning of railroads and therefore strict demands must be placed on track monitoring systems to ensure electromagnetic compatibility. The Prague subway system is not an exception. An alternative track vibration monitoring system has been proposed, demonstrated and tested along a single railway track in the Prague subway system. Two passive detection systems placed 50 m and 1.3 km away from the control room were used to measure tunnel vibrations triggered by passing trains free from the effect of any unrelated EMI existing in the subway tunnel. Fibre optic based systems immune to EMI can offer an efficient solution to both track and train monitoring.
KeywordsVibration measurements Track monitoring Fibre optic sensor EMI-free
The research described in this article could be carried out thanks to the active support of the Ministry of Education, Youth and Sports of the Czech Republic through Grant project no. CZ.1.07/2.3.00/20.0217 within the frame of the operation programme Education for competitiveness financed by the European Structural Funds and from the state budget of the Czech Republic. This article was also supported by project Technology Agency of the Czech Republic TA03020439 and TA04021263. The research has been partially supported by the projects no. SP2016/149 and VI20152020008.
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