Using fuzzy logic to determine the number of passengers entering and exiting an elevator car
US5219042A · kind A · utility
16Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Dec 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S706/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Embedded elevator control software, responsive to WEIGHT, CARCALLS, HALLCALLS and STOPS signals, uses fuzzy logic to determine the number of passengers entering and exiting an elevator car at a stop. The software forms three fuzzy logic sets representing temporary estimates of the number of entering passengers and forms three fuzzy logic sets indicative of temporary estimates of the number of exiting passengers. The sets are combined to form a single fuzzy logic set indicative of the number of entering passengers and a single fuzzy logic set indicative of the number of exiting passengers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.