Elevator traffic predictions using historical data checked for certainty
US5272288A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1990 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Sep 11, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/403
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system (FIG. 1) employing a microprocessor-based group controller (FIG. 2) communicating with elevator cars (3,4, . . . ) to derive relative prediction values to be used in a scheme of ultimately assigning, e.g., cars to hall calls at a plurality of floors in the building, using appropriate dispatching strategies based on predicted traffic conditions. In the algorithm of the invention (FIG. 3) the building's inhabitants' behavior based on weekly events, daily events and real time events is predicted, with the events being used to derive relative prediction values based on the weighted summation of the real, daily and weekly values of the events. Weekly events are considered to be those that happened over a past number of weeks (e.g. 10 weeks) on the same day of the week; while daily events are those that happened over the past few days (e.g. 5 days). Real time events are those which are effectively currently happening, with the time frame of reference being sufficiently short to produce data which effectively can be considered "real time" data, typically covering only a matter of some minutes (e.g. 4 minutes) or even less. In determining what events recorded in the dail…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.