An elevator car positioning system includes a plurality of magnetic field producers, each of the plurality of magnetic field producers located in a position corresponding to an entry/exit point of an elevator. A giant magnetoresistance (GMR) sensor is disposed on an elevator car of the elevator to detect individual ones of the plurality of magnetic field producers when within a given detection range of the GMR sensor and generate detection signals indicative thereof. A controller is in communication with the GMR sensor and is configured to receive the detection signals from the GMR sensor, determine a position of the elevator car relative to the entry/exit point based on the received detection signals, and generate control signals to position the elevator car.

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.

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.

A method of leveling an elevator car, a projection device and a leveling system. The method of leveling an elevator car includes: stopping the elevator car on a set landing; generating a calibration image that spans across the base plane of the elevator car and the base plane of the landing; processing the calibration image, and determining whether the elevator car is leveled with the landing based on the calibration image processing result; and ascending or descending the elevator car when it is determined that the elevator car is not leveled with the landing. According to the leveling method of the present application, it is possible to quickly and easily identify whether the object to be leveled is leveled with the leveling reference by analyzing and processing the calibration image, and even further identify the degree of levering, thereby realizing quick and simple leveling.

A method of leveling an elevator car, a projection device and a leveling system. The method of leveling an elevator car includes: stopping the elevator car on a set landing; generating a calibration image that spans across the base plane of the elevator car and the base plane of the landing; processing the calibration image, and determining whether the elevator car is leveled with the landing based on the calibration image processing result; and ascending or descending the elevator car when it is determined that the elevator car is not leveled with the landing. According to the leveling method of the present application, it is possible to quickly and easily identify whether the object to be leveled is leveled with the leveling reference by analyzing and processing the calibration image, and even further identify the degree of levering, thereby realizing quick and simple leveling.

An elevator alignment system providing alignment between respective sills of an elevator car and an entrance landing to/from which the cab is scheduled, via alignment members disposed with the sills.

An elevator alignment system providing alignment between respective sills of an elevator car and an entrance landing to/from which the cab is scheduled, via alignment members disposed with the sills.

Method for monitoring the speed of an elevator car, with the car door in particular unlocked, within the unlocking zone of the elevator shaft, having a first speed-limit curve, having a first switchover event, having a second speed-limit curve, and having a second switchover event. The first speed-limit curve has a range of values between a first maximum value at the entry to the unlocking zone and a first minimum value at the envisaged stopping point. The first switchover event corresponds to the car traveling beyond the stopping point or to a stoppage within the unlocking zone. The second speed-limit curve has a range of values between a second maximum value at the envisaged stopping point and one or two second minimum values at the entry to, and exit from, the unlocking zone. The second switchover event corresponds to a departure signal or to the locking of the car door.

A method of operating an elevator system for a learn run sequence including the steps of moving, using a linear propulsion system, an elevator car through a lane of an elevator shaft at a selected velocity; detecting, using a sensor system, the location of the elevator car when it moves through the lane; controlling, using a control system, the elevator car, the control system being in operable communication with the elevator car, the linear propulsion system, and the sensor system; and determining, using the control system, a location of each of the car state sensors relative to each other within the lane in response to at least one of a travel time of the elevator car, a velocity of the elevator car, a position of the elevator car, and a height of the elevator car.

A method of operating an elevator system for a learn run sequence including the steps of moving, using a linear propulsion system, an elevator car through a lane of an elevator shaft at a selected velocity; detecting, using a sensor system, the location of the elevator car when it moves through the lane; controlling, using a control system, the elevator car, the control system being in operable communication with the elevator car, the linear propulsion system, and the sensor system; and determining, using the control system, a location of each of the car state sensors relative to each other within the lane in response to at least one of a travel time of the elevator car, a velocity of the elevator car, a position of the elevator car, and a height of the elevator car.