Using fuzzy logic to determine the number of passengers in an elevator car
US5260527A · kind A · utility
23Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1992 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | May 4, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/403
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Elevator control software uses a signal from a passenger weight sensor and observed weight fuzzy logic sets to provide a fuzzy logic set indicative of the number of passengers in an elevator car. Optionally, the fuzzy set is defuzzified to produce a single crisp value indicative of the number of car passengers. Also, a table having indices corresponding to passenger weights and entries corresponding to the number of passengers in an elevator can be constructed using the plurality of observed weight fuzzy sets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.