Patent ID: 6526368
Filing Date: 2003-02-25
Classification: B66B

Abstract:
An elevator car position sensing system comprising:an elevator car within an elevator hoistway of a building, the elevator car having an elevator car floor; an elevator landing within the elevator hoistway; an encoder mounted within the elevator hoistway; a mechanical connection between the elevator car and the encoder, wherein the mechanical connection drives the encoder such that the encoder generates a position signal indicative of position of the elevator car within the hoistway; one of a position sensor and a position sensor actuator mounted to a sill of the elevator landing; the other one of the position sensor and position sensor actuator mounted in fixed relation to the elevator car, wherein the position sensor generates a position correction event signal indicative of the elevator car floor reaching a predetermined distance from the elevator landing when actuated by the position sensor actuator; and an elevator position controller responsive to the position signal and the position correction event signal.