Abstract: Systems and methods for monitoring an operation of a door of a public transportation vehicle are disclosed. In an embodiment, the system includes an optical sensor unit and a control unit. The optical sensor is arranged at a distance from the door and configured to record a movement of the door during an opening and/or a closing. The control unit is configured to (1) determine a position of a reference point of the door based on the recorded movement of the door, (2) determine a parameter of the movement of the door during the movement based on the determined position of the reference point, (3) determine a deviation of the parameter of the movement from a predetermined/allowed range of values of the parameter, and (4) determine an error in the operation of the door based on the determined deviation.

Abstract: Wireless communication systems for a vehicle, such as a train, are disclosed. In an embodiment, the wireless communication system includes a communication unit, an antenna, a power cable, a data transferring path, and a protective shield. The communication unit is arranged inside the vehicle. The antenna is provided on or above an exterior metal surface, such as the roof, of the vehicle. The power cable and the data transferring path connect the antenna and the communication unit. The protective shield is made of a conductive material, and is electrically and mechanically bonded to the exterior metal surface of the vehicle. The protective shield includes a cavity for accommodating the antenna, and at least one waveguide aperture extends through the protective shield and into the cavity.

Abstract: Systems and methods for monitoring an operation of a door of a public transportation vehicle are disclosed. In an embodiment, the system includes an optical sensor unit and a control unit. The optical sensor is arranged at a distance from the door and configured to record a movement of the door during an opening and/or a closing. The control unit is configured to (1) determine a position of a reference point of the door based on the recorded movement of the door, (2) determine a parameter of the movement of the door during the movement based on the determined position of the reference point, (3) determine a deviation of the parameter of the movement from a predetermined/allowed range of values of the parameter, and (4) determine an error in the operation of the door based on the determined deviation.

Abstract: Systems and methods for monitoring an operation of a door of a public transportation vehicle are disclosed. In an embodiment, the system includes an optical sensor unit and a control unit. The optical sensor is arranged at a distance from the door and configured to record a movement of the door during an opening and/or a closing. The control unit is configured to (1) determine a position of a reference point of the door based on the recorded movement of the door, (2) determine a parameter of the movement of the door during the movement based on the determined position of the reference point, (3) determine a deviation of the parameter of the movement from a predetermined/allowed range of values of the parameter, and (4) determine an error in the operation of the door based on the determined deviation.

Abstract: A system and method for providing wireless data communication between a wireless communication system in an aircraft and a stationary communication server outside the aircraft are disclosed. The wireless communication system includes a router network connected to a plurality of antennas, wherein the router network is configured to transmit and receive wireless data communication to and from a stationary communication server outside said aircraft through at least one ground base station via said antennas. The router network includes a plurality of connectivity nodes being physically separated and distributed within the aircraft, the connectivity nodes being connected to each other via a bus, and each connectivity node including a control unit, at least one modem, and preferably a plurality of modems, and a connection to at least one of the antennas. Further, each antenna is connected only to one of the connectivity nodes.

Abstract: A method and system for determining a position of a rail-bound vehicle on a railway is disclosed. The apparatus comprises: a transmitter and receiver for wireless communication with at least one base station arranged at a predetermined position in the vicinity of the railway; a measurement device to determine a distance to said at least one base station based on measurements of the radio signals of said wireless communication in the time domain and/or phase domain; and a controller arranged to determine a present position of said vehicle on said railway based on said distance. A control system/method for controlling rail-bound vehicles in a railway system, and/or an internal or external system related to such rail-bound vehicles, using such position determination is also disclosed.

Abstract: Wireless communication systems for an aircraft are disclosed. In an embodiment, the wireless communication system includes a router, an antenna, a control unit, and an antenna steering unit. The router is connected to the antenna. The router is configured to transmit and receive wireless data communication to and from a stationary communication server outside the aircraft through at least one ground base station via the antenna. The antenna is a directional antenna. The control unit is configured to determine an attitude change of the aircraft by determining a change in at least one of a roll angle, a pitch angle, and a yaw angle of the aircraft. The antenna steering unit is connected to the control unit. The antenna steering unit is configured to steer an antenna beam of the directional antenna based on the attitude change of the aircraft.

Abstract: Systems and methods for monitoring an operation of a door of a public transportation vehicle are disclosed. In an embodiment, the system includes an optical sensor unit and a control unit. The optical sensor is arranged at a distance from the door and configured to record a movement of the door during an opening and/or a closing. The control unit is configured to (1) determine a position of a reference point of the door based on the recorded movement of the door, (2) determine a parameter of the movement of the door during the movement based on the determined position of the reference point, (3) determine a deviation of the parameter of the movement from a predetermined/allowed range of values of the parameter, and (4) determine an error in the operation of the door based on the determined deviation.

Abstract: Sensor systems and methods for measuring environmental parameters associated with a rail-bound vehicle having a plurality of carriages are disclosed. In an embodiment, the sensor system includes a plurality of sensors arranged in a separate carriage of the rail-bound vehicle at a defined distance from a reference point within the rail-bound vehicle. The sensor system further includes a control unit configured to receive measurement signals and time-shift the received measurement signals based on the defined distance and a velocity of the rail-bound vehicle to determine whether an event measured by the plurality of sensors is present at the same point in time in two or more signals of a modified (time-shifted) set of signals.

Abstract: Wireless communication systems for a vehicle, such as a train, are disclosed. In an embodiment, the wireless communication system includes a communication unit, an antenna, a power cable, a data transferring path, and a protective shield. The communication unit is arranged inside the vehicle. The antenna is provided on or above an exterior metal surface, such as the roof, of the vehicle. The power cable and the data transferring path connect the antenna and the communication unit. The protective shield is made of a conductive material, and is electrically and mechanically bonded to the exterior metal surface of the vehicle. The protective shield includes a cavity for accommodating the antenna, and at least one waveguide aperture extends through the protective shield and into the cavity.

Abstract: A system and method for providing wireless data communication between a wireless communication system in an aircraft and a stationary communication server outside the aircraft are disclosed. The wireless communication system includes a router network connected to a plurality of antennas, wherein the router network is configured to transmit and receive wireless data communication to and from a stationary communication server outside said aircraft through at least one ground base station via said antennas. The router network includes a plurality of connectivity nodes being physically separated and distributed within the aircraft, the connectivity nodes being connected to each other via a bus, and each connectivity node including a control unit, at least one modem, and preferably a plurality of modems, and a connection to at least one of the antennas. Further, each antenna is connected only to one of the connectivity nodes.