Elevator control system and method of operating an elevator system
US10906775B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 2015 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Feb 3, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/165
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed is an elevator control system configured to control movement of an elevator car (12) along an elevator hoistway (26) between a starting position and a destination position (L2), the control system comprising a car holding position monitoring unit configured to monitor whether the elevator car (12) has moved upwards or downwards in the hoistway (26) during a holding period (68) where the car (12) was intended to remain stationary at the destination position (L2). The car holding position monitoring unit is configured to: Receive a first trigger signal (62) from a first car position reference system (40); upon receipt of the first trigger signal, receive signals from a further car position reference system to detect a first indicator (66) indicative of a travel distance (X2) between the position of the elevator car (12) in the hoistway (26) when receiving the first trigger signal (62) and the position of the elevator car (12) in the hoistway (26) when stopping at the destination position (L2); upon receipt of a further service call for the elevator car (12), receive further signals from the further car position reference system and receive a second trigger signal (70A) from…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.