Abstract: An anti-fire safety system for a transport vehicle has one or more storage tanks storing hydrogen. The system includes a first hydrogen-releasing system, which is configured to release outside the vehicle hydrogen contained in at least one of the storage tanks. The system also includes a second release system, which is arranged to intervene and bypass the first hydrogen release system under predetermined operative conditions. The second release system is configured to transform by a chemical reaction, at least a part of the bypassed hydrogen flowing outward from at least one storage tank, into at least one different substance.

Abstract: A surveillance system for traffic on a road includes a number of surveillance units. Each of the surveillance units is mounted at height, and includes at least one road traffic detection sensor. The surveillance units are placed along the road alternately on a first side and on a second side of the road. The surveillance system can be used in an associated surveillance method for traffic on a road.

Abstract: A method is for controlling the occupancy of the seats of one or more vehicle(s) by passengers using a control device for controlling the occupancy of the seats. The vehicle includes a number of seats equipped with a reading light. The control device includes each reading light, a control system for controlling the reading lights and a controller. The method includes an emission of at least one piece of data related to the seat toward an electronic device of a passenger of the vehicle. The piece of data is emitted using a wireless optical communication technique, which is a technique of visible light communication. The emission of the at least one piece of data related to the seat is carried out by the reading light of the seat controlled by the control system.

Abstract: Methods and devices for detecting a defect in a rail of a railway track, include at least two sensors selected from among magneto-acoustic and/or piezoelectric and/or magnetostrictive transducers; each sensor being associated with a timestamping circuit of a GNSS satellite positioning system; a measuring circuit for measuring, by way of the sensors, the acousto-elastic waves propagating in the rail, the wave or signal measurements being timestamped. Some developments describe notably active and passive modes; the use of train crossings; the emission of waves; the determination of the existence and then of the position and finally the characterization of the defect, where applicable; preferred placements for installing the sensors; the use of inter-correlation, passive inverse filter or correlation of coda of correlation methods; the use of mobile robots and/or drones; the use of artificial noise sources.

Abstract: A computer implemented method is for determining railway vehicle movement profile type of a railway vehicle movement profile. The railway vehicle movement profile includes a sequence of measured transmitted currents of a transceiver of a track circuit with respect to the time. The method includes obtaining a railway vehicle movement profile, normalizing the railway vehicle movement profile, extracting one or more features from the normalized railway vehicle movement profile, determining the distance of the extracted features with respect to each centroid of a railway vehicle movement profile type determined in a classification process, and assigning the railway vehicle movement profile to the railway vehicle movement profile type with the closest centroid.

Abstract: A device includes a collection channel, a protection channel, and a tank containing a liquid. The collection channel is configured to direct an airflow containing particles from the outside to the interior of the tank. The airflow passes through the liquid and the protection channel, and is connected to an outlet of the tank. The tank includes a barrier configured to prevent liquid spatters from reaching the outlet and to allow the airflow to pass through the tank to the outlet. The protection channel is connected to a source of suction, is configured to direct the flow from the outlet to the source of suction. The protection channel includes a condenser configured to condense a vapor of the liquid and to direct the generated condensate to the tank.

Abstract: A system and a related method are for managing the movement of a vehicle travelling along a transport network and powered by a power line which is segmented into a plurality of power feeding segments. At least one power feeding controller is configured at least to control switching ON/OFF a predetermined number of power feeding segments. An on-board control system is installed on board of said vehicle. At least one trackside control system is operatively connected to the on-board control system and the at least one power feeding controller.

Abstract: A method for controlling the deformation of a wheel includes obtaining, for multiple predefined angular positions on the wheel, a parameter characterizing an angular velocity of the wheel when the wheel is in contact with the running surface at each predefined angular position while the wheel is rolling on a running surface, and calculating a radius value of the wheel for each predefined angular position using the parameter characterizing the angular velocity obtained for that angular position.

Abstract: The invention relates to a rooftop crossmember (31) structurally bridging rooftop side members (32) at an end of a rooftop (11) of a railway passenger car (2, 3) adjacent to a gangway bellow (4) and comprising a plurality of structural elements such as an upper structural element (40a) and a lower structural element (40b). The lower and upper structural elements (40a, 40b) are shaped and attached together for forming a hollow structure integrating means for performing non-mechanical functions such as a water drainage channel (34) for evacuating water accumulating on the rooftop (11) on the top part of said gangway bellow (4), and at least an electric housing (29).

Abstract: A pulse width modulation system includes a plurality of module building blocks One control board is a master control board and others are slave control boards. Each slave control board determines a fictive master board timer based upon timer information received via a communication bus, and synchronizes the timer rate of a slave board timer to a timer rate of the master control board, or of an external timer rate. The timer information includes interlacing angle information defining an interlacing point for each of the control boards receiving the timer information. The interlacing angles are determined in relation to each other such that variation of a predetermined operation parameter, related to loads connected to pulse width modulated phase outputs of function modules, is minimized. At least two control boards, for which the interlacing angles are determined, are arranged to control function modules at different module building blocks.

Abstract: A voltage source converter includes two half bridges each having two current valves connected in series to be connected to opposite poles of a DC source/load. A gate drive unit controls a semiconductor device of a current valve. An arrangement carries out voltage measurements for providing a value of DC voltage between the opposite poles. A voltage divider connected across the two current valves measures DC voltage between opposite poles and each voltage divider has an output connected to processing parts delivering a digital signal representing a value of the DC voltage between the poles. Two gate drive units send a digital signal to a calculating unit to carry out a quality estimation of the digital signals and to calculate a DC voltage value from the signals while giving each signal a weight corresponding to the quality value adhered thereto and then forming a weighted average value.

Abstract: A pulse width modulation system including a plurality of module building blocks. A master control board includes a master board timer to generate a clock signal having a master timer rate. Each of slave control boards includes a slave board timer and is configured to determine a fictive master board timer based upon timer information received from the master control board via a communication bus, and further to synchronize the timer rate of the slave board timer to the master timer rate. The timer information includes timer offset information defining a time offset between the master board timer and the slave board timer The slave control board applies the time offset in control of pulse width modulated phase outputs such that the position of a slave pulse width modulated phase output signal is controlled in relation to the fictive master board timer.

Abstract: An acceleration detection system for a vehicle includes at least one inertial measurement unit, which includes at least one acceleration sensor configured for measuring an acceleration of the vehicle. The acceleration detection system further includes a temperature sensor configured for measuring a temperature of the inertial measurement unit to obtain a measured temperature. A cooler is configured for cooling the inertial measurement unit in function of the measured temperature.

Abstract: A multimodal terrestrial transport network (1) includes first and second networks (L1, L5), each of which is equipped with an operating system (SE1, SE2). The module (63) according to the invention is associated with an interchange station (H3) where the first and second networks are interconnected. It includes: an interface (83) for communicating with the operating systems of the first and second networks; means (84) for providing an overview of the traffic in a monitoring area (DS3) covering part of the first and second networks in order to update the overview data based on traffic data provided by the operating systems, and an engine (87) for executing operating rules based on the overview data and suited to generate instructions suited to modify the traffic within a control area (DC3).

Abstract: A passenger transport vehicle includes a system configured to vary the number of available seating places in accordance with the level of passenger traffic to be transported. The system has a mechanical support structure having a fixed part and a movable part movable between a first position in which the mechanical support structure forms a seating place, and a second position in which the seating place is unavailable for seating. The mechanical support structure includes a covering surface connected to and disposed around a portion of the movable part. The covering surface includes two rigid portions and a deformable portion. One rigid portion forms a seating surface when the movable part is in the first position, while both rigid portions and the deformable portion form an ischiatic support surface when the movable part is in the second position.

Abstract: A first (5) of the sheets has, near the zone (6) of overlap, stiffening parts (74) designed to resist the bending of the sheet along the zone of overlap. At least one region of the first sheet (5) is made to project, cantilever fashion, into the zone (6) of overlap. The stiffening parts are located near this cantilevered region. A pressing mechanism of a laser welding installation (2) is made to press against another sheet (4) to hold the sheets in contact with one another at the zone (6) of overlap. The laser welding installation is used to weld the sheets together along the zone of overlap. Application to the welding together, by transparency-welding, of sheets of the external skin of railway vehicle bodies.

Abstract: The present invention relates to a method of manufacturing surge arrestors, the method being of the type comprising the steps which consist in:

Abstract: This invention relates to a safety wheel, for a subway coach bogie, or the like, running on pneumatic tires, adapted to be interposed between a chassis of the bogie and a corresponding tire, said wheel presenting an outer peripheral zone having a braking portion as well as a guiding portion projecting radially outwardly from the braking portion, the hardness of the braking portion being much greater than the hardness of the guiding portion. This may be achieved for example by effecting a selective tempering of the braking portion by peripheral nozzles projecting a cooling liquid. This safety wheel is considerably longer lasting than those of the prior art.