Elevator car position determining system and method using a...

Details Elevator car position determining system and method using a... Elevator car position determining system and method using a...

2004-08-10

2009-10-06

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

C324S207120, C073S001790

Reexamination Certificate

active

07597176

ABSTRACT:
A method for determining a position of a moving object, such as an elevator car in an elevator shaft, includes the steps of mounting a leading sensor and a lagging sensor to the moving object and spacing the leading sensor from the lagging sensor by an offset distance, mounting a plurality of spaced apart position indicators along a pathway of the moving object, transmitting signals representative of object position from the leading sensor and the lagging sensor to a controller as the sensors pass the spaced apart position indicators, and filling any gaps in the signal gathered from one of the sensors by using a correction factor established from the position sensed by the other sensor and the offset distance. A system for performing the method is described.

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