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: A method for acquiring data, in an electronic acquisition module, detected by a sensor embedded on a vehicle with a predefined trajectory, including the following operations implemented in real time by an electronic acquisition module including a database defining, for each of a plurality of points of the predefined trajectory, a set of subsections of interest indicating at least one subsection of interest in the acquisition zone of the sensor: determining a next position of the moving vehicle on the predefined trajectory of the moving vehicle, and determining, as a function of at least the subsection of interest defined by the database for the point corresponding to the determined position, the value of a parameter included among acquisition of the data by the embedded sensor in the next position, or a processing parameter of the data captured by the embedded sensor in the next position.

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 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 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 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: An assembly includes a locomotive, equipped with a roof line, electrically connected to a pantograph, a control system and a sensing circuit. The control system orders, depending on the voltage on the roof line detected by the sensing circuit, the open or closed state of a switch between the roof line and a power supply circuit of the motors of the locomotive. The assembly also includes a tender, coupled to the locomotive and carrying batteries suitable for delivering a current for supplying the motors. The tender is electrically connected to the locomotive in such a way that a first terminal of the batteries is connected to the roof line and a second terminal of the batteries is connected to a point of the locomotive set to a reference potential.

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 method for controlling a position of a floor of a carriage of a railway vehicle moving on rails, relative to a platform. The carriage includes a body including the floor, at least one bogie, and at least one suspension interposed between the body and the bogie. The method includes determining a level difference between the actual position of the carriage relative to the platform and an expected position of the carriage relative to the platform, adjusting a height of the suspension for compensating the determined level difference. Determining the level difference includes capturing an image of at least one predetermined pattern comprised on the platform with a camera borne by the body, comparing the captured image with a memorized reference image of the at least one pattern of the platform, and calculating a vertical displacement from the images to determine the level difference.

Abstract: A method and system for inspecting a rail by guided waves, the rail being instrumented by sensors. The method comprises the steps of receiving elastic wave measurements from one or more sensors, as a train passes, releasing energy as guided waves into the rail; and of determining a function representative of the impulse response of the rail and the sensors. Developments describe how to determine the existence, position and characterisation of a defect in the rail (e.g. fracture, incipient fracture, etc.), the use of inter-correlation analyses, correlation of the coda of correlations, Passive Inverse Filter, imaging techniques. Other aspects are described for exploring rail defects: sensor position and movement, acquisition time, sampling frequency, frequency filters, amplifications, techniques for learning during successive train passes, signal injection by transducers. Software aspects are described.

Abstract: The invention relates to a light management device for a vehicle, in particular a railway vehicle, the vehicle comprising at least one car. The device comprises: at least one light source, the at least one light source emitting light radiation with at least one optical characteristic, at least one sensor selected from a sensor for measuring a passenger density aboard the vehicle, such as an axle load sensor, a vehicle position sensor, and/or a clock, a control unit connected to the at least one sensor, and to the at least one light source, the control unit being configured to control the at least one optical characteristic of the light radiation based on a measurement of the at least one sensor.

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: A method for measuring a given distance between a vehicle and an upper surface of a platform includes projecting two or more beams by a detection system mounted on the vehicle. The beams lie in a single plane of projection towards the platform. For each beam, a distance is measured between the detection system and the platform along a respective direction of the beam. The measured distances not corresponding to the upper surface are excluded. A vertical distance between a vehicle marker and the upper surface of the platform is calculated from the distances that are not excluded.

Abstract: A bogie is capable of being moved from a rest configuration to an active configuration in which the bogie carries at least one vertical load. The bogie includes a chassis, at least one pair of wheels, and a shaft extending along an axle axis for each pair of wheels. Each wheel has a wheel hub extending along a hub axis and an axle box attached to the chassis and receiving the associated hub. Each hub is rotatable relative to the associated axle box. For each hub, the hub axis forms a non-zero camber angle with the axle axis of the associated shaft when the bogie is in the rest configuration.