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Application of vibration signals in railway track diagnostics using a mobile railway platform

Licow Roksana, Tomaszewski Franciszek

Archives of Transport

2024

Vol. 71, iss. 3

127--145

tracks. The primary objective is to gather detailed information on track conditions through a passive experiment. This involves using mo bile diagnostic tools and techniques to assess railway infrastructure. The article elaborates on the range of diagnostic activities conducted in accordance with detailed railway regulations and highlights the benefits and capabilities of mobile diagnostics in railway transport. The research includes mobile field measurements across the general railway manager’s network, employing vibration signals to detect and evaluate track conditions. The methodology section provides a thorough description of the mobile measurement rail platform, detailing the equipment used, the routes taken for measurements, and the processes of data acquisition and processing. The data obtained from these meas urements is crucial for understanding the actual technical condition of the railway tracks. The method of obtaining and processing data is explained in relation to the real technical condition of the railway track. This involves using transducers with specific parameters and parametrically defined signal recording, along with dedicated analysis tech niques in post-processing. Vibration signals serve as the primary carrier of information in this diagnostic method. The article details the step-by-step procedures for collecting and analyzing these signals to provide accurate assessments of track conditions. Based on the results from the mobile measurement rail platform, the article characterizes various areas of diagnostics where vibration signals are particularly effective for technical evaluation. These areas include identifying track defects, monitoring track surface and railway crossing and assessing the overall structural health of the railway infrastructure. The use of vibration signals offers a non-invasive and efficient means of track diagnostics, providing real-time data for maintenance and repair decisions. In conclusion, the article underscores the significance of mobile diagnostics in enhancing the safety and reliability of railway transport. By leveraging vibration signals and advanced data processing techniques, this method provides a framework for continuous monitoring and assessment of railway track conditions, ultimately contributing to improved maintenance strategies and operational efficiency.

Monitoring pokładowy mechatronicznych układów bezpieczeństwa pojazdu. Tendencje

Puchalski A.

Diagnostyka

2007

nr 1(41)

81-84

Kontrola działania pojazdu w zakresie sprawności systemów bezpieczeństwa jest obok nadzoru pod kątem spełnienia wymagań ekologicznych głównym kierunkiem rozwoju pokładowych systemów diagnostycznych. W artykule określono tendencje towarzyszące temu rozwojowi. Przedstawiono podstawowe definicje i zasady funkcjonowania monitoringu pokładowego mechatronicznych układów bezpieczeństwa pasywnego i aktywnego pojazdu, opracowane i zalecane przez Amerykańską Agencję Bezpieczeństwa Ruchu Drogowego. Scharakteryzowano zbiory danych, które należy rejestrować bezwarunkowo oraz warunkowo za pomocą pokładowych rejestratorów dynamiki pojazdu. Omówiono okresy rejestracji i próbkowania, zakresy, dokładność i rozdzielczość oraz możliwości odczytu danych gromadzonych w trakcie monitoringu układów hamulcowych, poduszek powietrznych i pasów bezpieczeństwa.

Condition monitoring of vehicle safety systems is beside to inspection of emission standards compliance the main direction of the development of board diagnostic system In the article the trends attendant upon these progress are qualified. The article describes main definitions and final rules specified for the onboard motor vehicle crash event data monitoring by US Departament of Transportation NHTSA. Data elements required for both all vehicles equipped with an event data recorder (EDR) and vehicles under specified conditions are considered. The requirements for the recording time, data sample rate, range, accuracy, resolution and retrievability of the data monitored in the vehicle's safety systems, such as brakes, air bags and seat belts are presented.