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The benefits of wireless sensor networks (WSN) offer many possibilities for the management of energy systems, which are actually based on wired systems. The need of new services on-board the train and of cables lengths reduction promote the use of wireless sensor networks in trains. Then, researches are required to estimate radio coverage to optimize planning before actual network deployment. In this...
The work presented in this paper is part of general study concerning the connected wagon. The objective is to ensure communications of data associated to wagon (contents, location The aim of this study is to find the most appropriate technology to design a wireless communication between wagons or between wagon and infrastructure. This analysis takes into account railway and embedded systems constraints...
The railway environment is very rich in terms of electromagnetic disturbances. The variety of the transient and permanent interferences and the current evolution of the communication and signaling railway systems require the adaptation of EMC railway standards. In particular, standardized emission measurement methodologies are not fully adapted to measure transient interferences which can significantly...
The railway environment is characterized by various electromagnetic interferences (EMI) due to the large number of EMIs sources. In parallel, due to the variety of vulnerable systems (location, signalization, communication…) embedded or in the train vicinity, different techniques are required to study EMC issues. This work is focused on time-frequency tool adapted to the analysis of different EMI,...
The paper outlines the analysis of the distribution and variation of the electric field inside a reverberation chamber. The electric field distribution inside the enclosure was numerically computed for different working frequencies. The simulations were performed without and with a stirrer that was introduced lately in the chamber, in order to observe its effect on the electric field distribution...
This paper deals with the radiated emissions of the railway power supply infrastructure. Models issued from measurements and analysis of signals produced by sub-station of these signals are exploited to calculate the radiated emissions of a typical railway power supply line at frequencies lower than 2.5 MHz.
Conducted disturbances induced into automotive electronic equipment can be predicted in the early design phase by numerical simulation. This supposes a realistic modeling of the cable harness, as well as the electronic equipment. This paper evaluates a modeling method by the results obtained on a realistic automotive subsystem. The latter is composed of two pieces of electronic equipment connected...
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