Elevator car position determining system and method using a signal filling technique
US7597176B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2004 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Aug 11, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/3492
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.