Abstract: According to few examples a safety system, a method and a computer program for an elevator safety system is provided. A first switch configured to detect a first position of a safety device of an elevator. A second switch configured to detect a second position of the safety device. A controller configured to monitor a change of a state of the first switch and a change of a state of the second switch.

Abstract: 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.

Abstract: The present invention is an elevator inspection apparatus. It comprises a sensor package, a commercially available off-the-shelf computing device, a computer program, and a communication mechanism between the sensor package and the computing device. The sensor package is physically separate from the computing device, comprising a sensor for measuring the acceleration of the elevator car, a door position sensor for determining the position of the elevator door, a sensor for measuring the altitude of the elevator car, and an interface to an external communication mechanism for communicating with the computing device. The computing device includes an interface to an external communication mechanism for communicating with and providing power to the sensor package. The computer program controls the apparatus, analyzes the signals from the sensor package, displays the results of the analysis, and creates reports of the elevator performance.

Abstract: A controller includes a processor configured to, receive, via an input/output (I/O) device, a first destination call having a first departure floor and a first destination floor of a first passenger associated therewith, allocate the first destination call to one of the plurality of elevators, receive, via the I/O device, at least a second destination call having one or more of a second destination floor and a second departure floor of a second passenger associated therewith, and allocate the second destination call to one of the plurality of elevators such that the controller assigns the second destination call to a same one of the plurality of elevators as the first destination call, if a group allocation request associated with the first destination call and the second destination call is received from the link.

Abstract: A brake controller including a DC link for supplying power, the DC link including a positive DC link rail and a negative DC link rail; output terminals for connecting to a magnetizing coil of an electromagnetic brake; a current path established between the DC link and the output terminals for conducting DC link power to the magnetizing coil; and two solid-state switches fitted into the current to adjust output terminal voltage by modulating the DC link voltage.

Abstract: A system and a method are provided for damping vertical oscillations of an elevator car hovering at an elevator landing. The system includes a sensor, a controller and an elevator machine connected to a traction sheave. The sensor is adapted to provide a sensor signal indicative of rotation of the traction sheave, wherein the rotation of the traction sheave corresponds to the vertical oscillations of the hovering elevator car. The controller is adapted to provide a control signal based on the sensor signal. The elevator machine is adapted to reduce the vertical oscillations of the hovering elevator car by controlling the rotation of the traction sheave based on the control signal.

Abstract: The invention improves control of wear and tear of the elevators in an elevator group having a plurality of elevators and at least one group control unit. The actual usage of each elevator is recorded, and the group control unit executes at least one allocation algorithm for selecting which elevator of the elevator group is used to serve a call. The allocation algorithm compares the actual usage of at least two elevators against respective target usages and selects the elevator having its actual usage most deviating from the target usage to serve an outstanding call. With the invention, the wear and tear of elevators may be balanced, or certain elevators may be set to reach the end of the maintenance period sooner.

Abstract: An elevator has a safety controller to which several safety switch arrangements are connected. The safety controller is configured to cause the stop of the elevator motor and the activation of the motor brakes. A comparator is provided in the safety controller for the determination of the status of the safety chain. The comparator is connected with a memory for storing at least one resistor reference value, which comparator is configured to output a safety chain status signal in dependence of comparison of a measured resistance value with the resistor reference value. Each of said safety switch arrangements includes at least one first resistor and a safety switch which are connected in series. The value of the first resistor is different in at least some safety switch arrangements, preferably in all safety switch arrangements. Each safety switch arrangement includes at least a second resistor connected in parallel with the safety switch, which second resistor has a higher value than the first resistor.

Abstract: The invention relates to a rope terminal arrangement of an elevator, comprising compression means comprising two compression members delimiting a rope gap between them, the compression members being arranged to compress a rope end of a belt-shaped rope placed in the rope gap for blocking movement of the rope end in its longitudinal direction relative to the compression members; and an electrical circuit comprising a contact switch, which is switchable between a first and second state, in particular between open and closed state; and the contact switch being mounted on one of the rope end and a compression member, and the arrangement, in particular said other of said rope end and a compression member, is provided with actuating means arranged to move together with the other of said rope end and a compression member relative to said one of said rope end and a compression member and to actuate the contact switch to switch its state when the rope end moves in its longitudinal direction relative to the compression

Abstract: An elevator system includes a first propulsion system for imparting linear motion to an elevator car. The elevator system includes a controller generating control signals for the first propulsion system. The elevator system includes a brake for holding the elevator car. The elevator system includes an energy storage unit. The elevator system includes a second propulsion system. The controller is configured to at least one of (i) access the energy storage unit to power at least one of the first propulsion system and second propulsion system upon a fault during upward travel of the elevator car (ii) power the second propulsion system upon a fault in the first propulsion system during upward travel of the elevator car and (iii) delay applying the brake until the elevator car speed is less than a threshold upon a fault during upward travel of the elevator car.

Abstract: A method and system are provided for generating automatic elevator calls for an elevator system in a building, in which is a plurality of apartments and in the apartments an apartment-specific sensor, the sensor signal produced by which detects that a person is leaving or has left an apartment. On the basis of the sensor signal, an elevator is called to the floor on which the apartment is situated for collecting the person who has left the apartment.

Abstract: A method for controlling an elevator where an elevator is allocated for the use of a passenger in a first optimization phase in such a way that a first cost function is minimized, a second optimization phase is performed, in which the route of the allocated elevator is optimized in such a way that a second cost function is minimized.

Abstract: A drive unit for an elevator system, the drive unit including a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link.

Abstract: A monitoring system for people-transporting systems, which systems are in the form of an elevator, escalator or moving walkway, includes at least one interrogation device and at least one safety switch that is connected to the interrogation device via an electrical safety circuit and is used for monitoring an equipment of the people-transporting device. A current direction-dependent unit is arranged in the electrical safety circuit. Furthermore, the interrogation device applies a test voltage with an alternating polarity to the electrical safety circuit. Furthermore, a people-transporting system having such a monitoring system is provided.

Abstract: In an elevator control apparatus, a DC-DC converter including a first switching element and a second switching element is configured to generate power for driving an elevator brake by alternately operating each of the first switching element and the second switching element. A first photocoupler and a second photocoupler are configured to independently operate the first switching element and the second switching element, respectively. A first calculation unit and a second calculation unit are configured to independently control power supply voltages of the first photocoupler and the second photocoupler, respectively.

Abstract: Wireless portable vehicle lift system incorporating one or more enhanced communication and/or control features. The lift system can incorporate enhanced touch screen-enabled functionalities and/or enhanced wireless communication features.

Abstract: An elevator system includes a battery; a machine having a motor for imparting motion to an elevator car; an inverter for converting DC power from the battery to AC power for the machine in motoring mode and converting AC power from the machine to DC power for the battery in regenerative mode; and a controller to control the inverter, the controller implementing at least one of: detecting an overload at the battery in motoring mode and reducing car speed in response to the overload; detecting an overcharge at the battery in regenerative mode and reducing car speed in response to the overcharge; detecting motor direct current in a motor field weakening mode and reducing car speed in response to the motor direct current; and detecting car load and adjusting car speed in response to car load.

Abstract: An elevator control system includes at least one destination entry fixture coupled to a controller area network (CAN) bus that provides a first communication channel, the at least one destination entry fixture operable to transmit destination information over the CAN bus; a plurality of elevator car controllers each associated with a respective elevator car, the plurality of elevator car controllers coupled to the CAN bus to receive the destination information; the plurality of elevator car controllers coupled to a ring network that provides a second communication channel; and a group controller operable to determine an elevator car to be dispatched in response to receiving the destination information.

Abstract: An elevator controller may include a memory configured to store acceleration data therein; and a processor configured to, register a passenger-specific destination call, the passenger-specific destination call including destination information indicating a destination floor of a passenger, receive passenger acceleration data indicating a vertical acceleration of the passenger in one of a plurality of elevator cars, compare elevator acceleration data of the plurality of elevator cars departing a floor with the passenger acceleration data, determine whether a correlation exists between the passenger acceleration data and the elevator acceleration data of a detected one of the plurality of elevator cars, and guide the detected one of the plurality of elevator cars that has left a floor to the destination floor according to the passenger-specific destination call, if the processor determines that the correlation exists.

Abstract: A positioning apparatus for an elevator car, an elevator and also a method for determining the position of an elevator car are disclosed. The positioning apparatus for an elevator car includes a plurality of position identifiers possessing a readable physical property, which position identifiers are disposed by the side of the trajectory of the elevator car and also a reader device installed on the elevator car for reading a physical property of the position identifiers. The aforementioned readable physical property of a position identifier is adapted to classify each position identifier according to the intended use of the position identifier into one of two or more optional classes, and in the position identifiers belonging to at least one aforementioned class the same physical property is additionally adapted to indicate the linear position of the elevator car.