Elevator load detection system and method
US9573789B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | May 9, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/222
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator car control system and method of operation determines occupancy weight based upon motor load. Information on motor load is collected during ascent and descent with loaded and unloaded elevator cars and used to create estimates of occupancy weight based for the full range of motor loads throughout travel within the hoistway. Once the estimates are available the approximate occupancy weight can be determined after each floor stop and appropriate action can be taken. One action is Load Bypass which prevents the elevator car from stopping to load more passengers until occupancy weight decreases. Another action is Nuisance Detection which clears all internal floor calls when occupancy weight indicates no passengers are present. Another action is Load Dispatch which prioritizes a floor for pickup based on demand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.