A lift system for protecting the privacy of passengers. The lift system having a lift car that can be moved between floors of a building. The lift car having a video camera arranged in the lift car. The video camera being a part of a video system that also includes a video monitor for displaying information relating to the interior of the lift car. A video control device is communicatively connected to and controls the video system in a selective manner according to one of several operating modes. The several operating modes include a first operating mode in which the video system is deactivated or activation is blocked, so that the video system remains in an inactive state, if a passenger asks for the video system to be deactivated. When in the first operating mode the video system remains in the inactive state for as long as the passenger is in the lift car.

A method for dynamic elevator door control is provided. The method is implemented by a system, which includes an elevator. The system procures passenger data, which can include a number of passengers presently travelling to a floor and a number of passengers awaiting to board at the floor. A determination is made by the system with respect a door operational time based on the passenger data. The system implements the door operational time to dynamically cause doors providing access to the elevator to remain open for a duration of the door operational time.

A method for generating maintenance data of an elevator door system includes detecting a first event during closing or opening of a door of the elevator door system and defining a time stamp of the first event, wherein the first event is opening or dosing of a safety circuit; detecting at least one second event during said closing or opening of the door of the elevator door system and defining time stamp of the at least one second event; defining a difference value by comparing the time stamp of the first event and the time stamp of the at least one second event; comparing the difference value to previously stored one or more difference values; and generating maintenance data of the elevator door system. A system is provided to perform at least partly the method.

A door system is provided and includes=a door assembly operable to assume an open position at which an aperture is opened and a closed position at which the aperture is closed, a sensor assembly and a controller. The controller is coupled to the door assembly and configured to instruct the door assembly to normally assume the closed position and to assume the open position in accordance with an open signal being issued by the sensor assembly. The sensor assembly is configured to track the individual, determine whether the individual is likely to be approaching the aperture from the tracking and issue the open signal in accordance with a determination that the individual is likely to be approaching the aperture.

The invention relates to a method and arrangement for closing doors of an elevator that comprises at least an elevator shaft, a car running along guide rails, in the shaft and equipped with a car door, landing doors at each landing floor, a hoisting machinery, a necessary roping system and shaft equipment, and a control system for controlling the activities of the elevator. According to traffic situations controlled by the control system of the elevator the door open time of the car doors and landing doors is reduced by speeding up the closure of the doors, and at the same time the passengers are informed about the speed-up.

A method of updating a stall threshold level of an elevator door to control a door stall occurring during opening or closing of the elevator door includes determining an exceptional motion count of a door based on at least one of a speed and an acceleration of the door, determining whether the door is stalled, based on a determined exceptional motion count of the door and a preset stall threshold level of the door, and re-determining the stall threshold level of the door according to the determination of whether the door is stalled.

An elevator arrangement includes a car, an elevator control having car position current information, a plurality of fixtures, at least one sound generator at one of the car and each of the fixtures, and at least one sound detector at the other of the car and each of the fixtures. A fixture position learning procedure includes: travelling the car to and, preferably, stopping at each of the floors; at each floor stop, generating a sound signal from the sound generator at the car or the fixture at the floor stop, detecting the sound signal using the sound detector, determining a position information for the fixture at the floor stop by assigning information on a current position of the car from the elevator control, and storing the position information for subsequent identification purposes, whereby the identity/position of each of the fixtures is determined in the automatically performed learning procedure.

Methods and systems to control an elevator door of an elevator car that can be moved between floors of a building. At least one registered destination call is evaluated, which makes it possible to plan the number of boarding or exiting passengers for each stopping floor. For each stopping floor, a corresponding door dwell time for the elevator door is determined to make it possible for a registered passenger to board or exit on a stopping floor. The number of passengers that exit the elevator car on the stopping floor and the number of passengers that board the elevator car on the stopping floor is also determined. The elevator door is closed regardless of the set door dwell time if the number of passengers boarding and exiting on the stopping floor determined by the sensor system corresponds to the number of boarding or exiting passengers planned for the stopping floor.

Methods and systems to control an elevator door of an elevator car that can be moved between floors of a building. At least one registered destination call is evaluated, which makes it possible to plan the number of boarding or exiting passengers for each stopping floor. For each stopping floor, a corresponding door dwell time for the elevator door is determined to make it possible for a registered passenger to board or exit on a stopping floor. The number of passengers that exit the elevator car on the stopping floor and the number of passengers that board the elevator car on the stopping floor is also determined. The elevator door is closed regardless of the set door dwell time if the number of passengers boarding and exiting on the stopping floor determined by the sensor system corresponds to the number of boarding or exiting passengers planned for the stopping floor.

A method for determining moving mass of a door system, actuated by a motor, wherein a) the motor electrical output, which is converted into mechanical output, is measured, b) the electrical output is summed during opening and/or closure, starting from the beginning of the actuation of the mass by the motor from initial rest until an end rest position is reached following completion of the actuation to determine energy losses, c) measurement of the maximum speed of the mass of the door system is measured during opening and/or closure, d) the electrical output provided by the motor from the initial rest position of the mass of the door system until achieving the maximum speed v thereof is summed, and the obtained energy value is reduced by the energy losses occurring up to this time point to determine the mass of the door system from the obtained kinetic energy.