Abstract: An elevator system (1) comprises: a hoistway (4) extending between a plurality of landings (8, 9); at least one hoistway door (10, 11) allowing access to the hoistway (4); an elevator car (6), which is configured to move along the hoistway (4); at least one safety (16), which is attached to the elevator car (6) and configured to stop any movement of the elevator car (6) when activated; an electronic safety actuator (18), which is configured to activate and deactivate the at least one safety (16); and a door safety switch (20), which is configured to monitor the at least one hoistway door (10, 11) and which is connected with the electronic safety actuator in order to allow activating the at least one safety (16), if the door safety switch (20) detects that the at least one hoistway door (10, 11) is not closed.

Abstract: Elevator control system, comprising an elevator control device for operating an elevator car which is adapted to be operated within an elevator shaft, and an inspection control station configured to communicate with the elevator control device for operating at least one function of an elevator system in an inspection or maintenance operation mode, and configured for attachment at a storing location, wherein the storing location is at the elevator car or within the elevator shaft or in proximity of the elevator shaft. The inspection control station is adapted to be detachable from the storing location and configured to operate as remote inspection control station when detached from the storing location through wireless communication with the elevator control device, and is configured to be movable and operable in the inspection or maintenance operation mode from inside and outside of the elevator car and within the elevator shaft.

Abstract: Elevator system includes a hoistway extending between a plurality of landings; an elevator car configured for moving along the hoistway between the plurality of landings; an elevator drive configured for driving the elevator car; a position determining system configured for determining the position of the elevator car within the hoistway; at least one switch; and an elevator controller. The elevator controller is configured for detecting an activation of the at least one switch; controlling the elevator drive to move the elevator car in a predetermined direction after the switch has been activated; determining the current position of the elevator car within the hoistway and comparing the determined position of the elevator car with at least one predefined positional limit (LUP, LLOW), while the elevator car is moving.

Abstract: An elevator safety system (20) for an elevator system (2) with a self-diagnostic functionality includes at least two safety channels (22a, 22b), wherein each safety channel (22a, 22b) is configured for supplying a safety signal (23a, 23b) in case a safety issue has been detected. The elevator safety system (20) comprises a self-diagnostic evaluator (24), which is configured for receiving any safety signals (23a, 23b) supplied via the safety channels (22a, 22b); starting a timer (25) for measuring a predetermined period of time in case a safety signal (23a, 23b) is supplied on one of the safety channels (22a, 22b); and stopping any further operation of the elevator system (2) in case the received signal (23a, 23b) is still supplied after the predetermined period of time has expired.

Abstract: An elevator safety system (1) configured for monitoring an elevator system (2) comprises at least one safety node (12) and an evaluator (19). The at least one safety node (12) is configured for monitoring at least one component of the elevator system (2) and/or of the elevator safety system (1) and providing signals representing the current status of the at least one monitored component. The evaluator (19) configured for receiving the signals from the at least one safety node (12); and for determining a safety status of the elevator system (2) and/or of the elevator safety system (1) from a combination of the received signals.

Abstract: An elevator system (2) comprises a hoistway (4) extending between a plurality of landings (8a, 8b, 8c); an elevator car (60) configured for moving in two opposite directions along the hoistway (4); and an elevator safety system (1). The elevator safety system (1) comprises at least one safety gear (20) configured for moving along the hoistway (4) and, upon activation, braking movement the elevator car (60); at least one mobile safety node (43, 45) configured for moving along the hoistway (4) with the at least one safety gear (20) and for controlling the at least one safety gear (20); and at least one stationary safety node (42, 44). The elevator safety system (1) further comprises a communication bus (17) connecting the safety nodes (42-45) with each other and allowing the safety nodes (42-45) to communicate with each other.

Abstract: An elevator system (2) comprises at least one elevator car (6) moving within a hoistway (4); at least one door (10, 11) providing access to the elevator car (6); at least one passenger sensor (21) configured for detecting passengers (30) in the vicinity of the at least one door (10, 11); and a door control device (22) configured for controlling the at least one door (10, 11). The door control device (22) comprises a memory (24) in which at least one predefined movement profile is stored; a modificator (28) configured for modifying the at least one predefined movement profile when the at least one passenger sensor (21) detects a passenger (30) in the vicinity of the at least one door (10, 11); and a door controller (26) configured for controlling the movement of the at least one door (10, 11) based on the at least one movement profile.

Abstract: An elevator brake control system (10) is described, in particular for controlling an elevator brake in a machine room-less elevator, the elevator including a drive machine drivingly coupled to an elevator car for moving the elevator car between a plurality of landings in a hoistway, and an elevator brake having at least an engaged condition for holding the elevator car at a fixed position in the hoistway, and a released condition for allowing the elevator car to move along the hoistway; the elevator brake control system (10) comprising a first safety device (T1) and a second safety device (T2), each of the first safety device (T1) and the second safety device (T2) responsive to detection of a failure in any sub-system of the elevator, such as to bring the elevator brake into its engaged condition in response to detection of such failure; wherein each of the first safety device (T1) and the second safety device (T2) comprises a power semiconductor switching device.

Abstract: An automatic elevator safety system includes an elevator safety circuit and an external server. The elevator safety circuit is configured for monitoring the operation of an elevator system comprising at least one elevator car traveling along a hoistway, and an elevator control configured for controlling the movement of the elevator car. At least one of the elevator control and the elevator safety circuit is configured for sending data comprising information about the current state of the elevator system to the external server, in particular in case a safety issue has been detected. The external server is configured for (A) receiving the data sent by the at least one elevator safety circuit; (B) analyzing the received data; and (C) depending on the result of the analysis, sending commands to the elevator system.

Abstract: An elevator system (2) comprises an elevator car (6) configured for moving along a hoistway (4); an elevator control (13) configured for controlling the movement of the elevator car (6); and a communication circuit (18) configured for establishing a data connection (20) between the elevator system (2) and a remote service center (22). The elevator control (13) includes a safety circuit (17) configured for detecting a malfunction of the elevator system (2).

Abstract: An elevator safety system includes: at least two sensors, each of the sensors being configured for monitoring at least a portion of a hoistway of an elevator system and providing monitoring signals; a transformation unit which is configured for transforming the monitoring signals provided by at least one of the sensors and producing transformed signals corresponding to a common direction of vision; a comparison unit which is configured for comparing the at least two transformed signals and for generating a failure signal if a difference between the at least two transformed signals exceeds a predetermined threshold; and a detection unit, which is configured for detecting a person or undesired item in at least one of the two transformed signals and for generating an alarm signal if a person or undesired item is detected.

Abstract: A ground fault detection apparatus (32) for detecting a ground fault of a safety chain (10b; 10c; 10d), in particular a safety chain (10b; 10c; 10d) of a people conveyor, comprises: a supply line current monitoring unit (26), which is configured for measuring a current flowing into the safety chain (10b; 10c; 10d) and providing a first signal indicative of the amount of current flowing into the safety chain (10b; 10c; 10d); a return line current monitoring unit (28), which is configured for measuring a current flowing out of the safety chain (10b; 10c; 10d) and providing a second signal indicative of the amount of current flowing out of the safety chain (10b; 10c; 10d); and a comparison unit (30), which is configured for comparing the first and second signals and issuing an alarm signal in case the difference between the first and second signals exceeds a predetermined limit.

Abstract: An elevator safety device (120) is configured for restricting the movement of an elevator car (106) of an elevator system (102) along its pathway in order to prevent the elevator car (106) from moving beyond at least one limit position. The elevator safety device (120) is configured for performing at least one learning run (220a, 220b) for setting the at least one limit position.

Abstract: An elevator system includes a primary source of electrical power; a power unit having a power supply, the power supply producing DC power from the primary source of electrical power. A rescue storage device provides power to the elevator system when the primary source of electrical power is unavailable. The rescue storage device is coupled to an output of the power supply to provide additional DC power with the DC power when the primary source of electrical power is available and an increased power requirement is present.

Abstract: An elevator system (2) comprises: a hoistway (14) extending between a plurality of landing zones (6, 8, 9); at least one elevator car (12) configured for moving along the hoistway (14); at least one positional sensor (24, 26, 63, 83, 93) arranged at a defined position within the hoistway (14); a speed and/or acceleration sensor (25), which is configured for determining current speed and/or acceleration information of the at least one elevator car (12) within the hoistway (14); and an elevator controller (28), which is configured for: A) calculating current positional information of the at least one elevator car (12) within the hoistway (14) from the speed and/or acceleration information; B) checking the validity of the speed and/or acceleration information; C) in case the speed and/or acceleration information is determined as being valid: operating the elevator system (2) based on the calculated positional information; D) in case the speed and/or acceleration information is determined as not being valid: D1)

Abstract: An elevator system (1) comprises: an elevator car (4), which is moveable along a hoistway (2); a mobile node (8) moving with the elevator car (4); a stationary node (14), which does not move with the elevator car (4); and a CAN-bus (60) interconnecting the mobile node (8) with the stationary node (14) for transmitting data between the nodes (8, 14). The mobile node (8) and the stationary node (14) are configured for transmitting sound and/or video data from and/or to the elevator car (4) via the CAN-bus (60).

Abstract: An elevator safety system for an elevator system (2) with an elevator car (12), which is movable along a hoistway (4), comprises: at least one position sensor (25), which is configured for determining a position value representing the position of the elevator car (12) within the hoistway (4); a limit setting unit (32), which is configured for determining an operation status of the elevator system (2) and for setting at least one position limit according to the determined operation status of the elevator system (2); and a comparison unit (34), which is configured for comparing the position value with the position limit and for determining an unsafe condition of the elevator system (2) if the position value is not in compliance with the at least one position limit.

Abstract: An elevator safety system comprises: at least one position sensor, which is configured for determining a position value representing the position of the elevator car within the hoistway; at least one door sensor, which is configured for detecting whether the at least one door is closed; a limit setting unit, which is configured for determining an operation status of the elevator car and for setting at least one position limit according to the determined operation status; and a comparison unit, which is configured for comparing the determined position value with the set position limit and for determining an error condition, if the position value is not in compliance with the at least one position limit and the at least one door sensor indicates that at least one door is not closed.

Abstract: The present disclosure relates to an elevator control system (1), comprising an elevator control device (2) for operating an elevator car (12) which is adapted to be operated within an elevator shaft (18), and an inspection control station (3) configured to communicate with the elevator control device (2) for operating at least one function of an elevator system (10) in an inspection or maintenance operation mode, and configured for attachment at a storing location (71,72) of the elevator system (10), wherein the storing location (71,72) is at the elevator car (12) or within the elevator shaft (18) or in proximity of the elevator shaft (18).

Abstract: An elevator safety system comprises a plurality of door safety units (12), wherein each door safety unit (12) is configured to monitor at least one door (10, 11) of an elevator system (2); an elevator control unit (13), which is configured to control the elevator system (2), in particular to control movement of an elevator car (6) of the elevator system (2); a communication bus (14), which is configured for transmitting information between the plurality of door safety units (12) and the elevator control unit (13); and a signal line (16) serially connecting the elevator control unit (13) and the plurality of door safety units (12). Each of the plurality of door safety units (12) is configured to interrupt the signal line (16) when it detects a malfunction.