Estimating number of people waiting for an elevator car based on crop and fuzzy values
US5243155A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1992 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | May 4, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S706/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The number of hall passengers waiting at a stop for service by an elevator car is determined by first calculating instantaneous passenger rates whenever a hall call button is pressed or whenever passengers board an elevator car. The instantaneous passenger rates are scaled to compensate for the inherent differences in service rates of the stops. The scaled rates are averaged into one or more of an up, down, or off peak quantities depending upon the mode of the elevator system. The number of hall passengers waiting at a stop is then calculated by multiplying one or more of the up, down, or off peak quantities, depending upon the mode of the elevator system, by the elapsed time since the stop was last serviced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.