Lidé na fakultě
Ing. Petr Červenka

2025, Young Transportation Engineers Conference 2024, Praha, České vysoké učení technické v Praze), p. 63-68), ISBN 978-80-01-07445-9, ISSN 2336-5382

Current methods for diagnosing the quality of the railway superstructure are mainly based on optical sensors, which are relatively expensive compared to acoustic sensors. As part of the HLUKOS research project, a pair of microphones is installed near the wheel-rail contact point on a diagnostic vehicle of the Railway Administration (Czech railway infrastructure manager). The research task is to detect when the sound level changes significantly. A likelihood ratio method has been used in this paper to detect abrupt changes, which is a current scientific topic. Experiments with different input thresholds are performed on a sample of 250 m of track data. Initial experimental results show that this method is meaningfully able to detect locations of abrupt changes with input threshold values h = 4.58 and number of steps from N = 5 to N = 40.

Stať ve sborníku z prestižní konf. (Scopus)

2024, Proceedings of the 2024 24th International Scientific Conference on Electric Power Engineering (EPE), VSB - Technical University of Ostrava (TUO)), p. 216-220), ISBN 979-8-3503-4878-1, ISSN 2376-5623

The aim of the study was to investigate the possibilities of extending the operation of portable devices designed to monitor road traffic during short-term measurements, while keeping handling and installation simple. Of interest were the specific possibilities of using photovoltaic (PV) panels to extend the operation of measuring devices. The use of solar energy is assumed to achieve a significant extension of device operation by up to 50 %. The methodology of the study involves the interconnection of photovoltaic panels in conjunction with portable devices to achieve sufficient power to extend the operating time. In real operation, the efficiency of photovoltaic panels was evaluated by focusing on analytical procedures. The results of the study can provide advances in road traffic monitoring and offer practical solutions for the efficient and sustainable operation of portable devices.

Stať ve sborníku z prestižní konf.