A door control device includes: a speed control unit configured to perform speed control of an electric motor that drives a door; a speed detection unit configured to detect a speed of the door; and an obstruction detection unit configured to detect obstruction between the door and a door pocket, upon a value of the speed of the door detected by the speed detection unit decreasing by a first predetermined value or more with respect to a speed command value in the speed control during a door opening operation of the door.

A control system for an electrically-operated railroad car end door includes, an actuator, a processor, and a memory storing program instructions that cause the processor to instruct the actuator to begin generating a braking force applied to the railroad car end door in response to an opening of the railroad car end door, and determine whether the railroad car end door is being manually opened by a person based on information related to a state of the railroad car end door while the braking force is being generated.

A control system for an electrically-operated railroad car end door includes, an actuator, a processor, and a memory storing program instructions that cause the processor to instruct the actuator to begin generating a braking force applied to the railroad car end door in response to an opening of the railroad car end door, and determine whether the railroad car end door is being manually opened by a person based on information related to a state of the railroad car end door while the braking force is being generated.

A multi-rail express transit system for allowing the passengers to travel at desired speed/distance, is disclosed. The system comprises a centralized control system, at least three closed loop parallel rails, and at least three sequence of transit cars. Each sequence of transit car is supported by the respective rail. The transit cars are configured to move in same direction at different speeds. The control system is configured to synchronize the speed of transit cars at desired point to allow transference of passengers. A bellow assembly is disposed around an exterior side of a door of each transit car. The bellow assembly is configured to form an airtight passageway between at least two transit cars. Each transit car comprises a movable floor. The movable floor of one transit car is extendable to a floor of an adjacent transit car to facilitate passenger transference on forming the airtight seal.

A platform-door control system includes an on-board control apparatus provided in a train, and a platform-door control apparatus. The on-board control apparatus includes: a ground-coil information storage unit to store information on a ground coil located on a track on which the train runs; a train-position detection unit to detect a position of the train; a train stop-position specification unit to determine a train stop position on the basis of stored information on the ground coil, and train position information detected by the train-position detection unit; a vehicle-door specification unit to determine a vehicle door of the train to be opened/closed, on the basis of the determined train stop position; and a vehicle-door information output unit to output determined vehicle door information of the train. The platform-door control apparatus receives the vehicle door information output from the vehicle-door information output unit, and controls platform doors installed at a station.

A platform-door control system includes an on-board control apparatus provided in a train, and a platform-door control apparatus. The on-board control apparatus includes: a ground-coil information storage unit to store information on a ground coil located on a track on which the train runs; a train-position detection unit to detect a position of the train; a train stop-position specification unit to determine a train stop position on the basis of stored information on the ground coil, and train position information detected by the train-position detection unit; a vehicle-door specification unit to determine a vehicle door of the train to be opened/closed, on the basis of the determined train stop position; and a vehicle-door information output unit to output determined vehicle door information of the train. The platform-door control apparatus receives the vehicle door information output from the vehicle-door information output unit, and controls platform doors installed at a station.

A door operator system for moving a door of a vehicle between open and closed positions includes a track defined in a base, the track having a curved portion at an end thereof; a drive bracket configured to suspend the door from the base, the drive bracket being slidably movable along the track between an open position and a closed position adjacent to the curved portion; a drive mechanism configured to cause movement of the drive bracket between the open and closed positions; and a locking system configured to retain the drive bracket in the closed position. When the drive bracket is in the closed position, the curved portion engages a cam follower of the locking system to retain the cam follower in a locked position that is over center with respect to a plane perpendicular to the track and a plane parallel to the track.

A door operator system for moving a door of a vehicle between open and closed positions includes a track defined in a base, the track having a curved portion at an end thereof; a drive bracket configured to suspend the door from the base, the drive bracket being slidably movable along the track between an open position and a closed position adjacent to the curved portion; a drive mechanism configured to cause movement of the drive bracket between the open and closed positions; and a locking system configured to retain the drive bracket in the closed position. When the drive bracket is in the closed position, the curved portion engages a cam follower of the locking system to retain the cam follower in a locked position that is over center with respect to a plane perpendicular to the track and a plane parallel to the track.

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.

The door actuator generally has a receiving structure having a door carriage path; a first coil assembly and a second coil assembly both being mounted to the receiving structure along a common coil assembly plane and being longitudinally spaced from one another along the door carriage path by a spacing distance; and a door carriage being slidingly received by the receiving structure, the door carriage having a plurality of alternate-pole magnets provided along a magnet plane being parallel and spaced apart from the coil assembly plane, the first and second coil assemblies being operable to move the door carriage back and forth between the two ends of the rail.