Floor population detection for an elevator system
US5511635A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Jul 25, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/403
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A computer controlled elevator system (FIG. 1) including signal processing means for dynamically computing the population spread of the building, i.e., the number of elevator users in a building on a floor-by-floor basis, including the lobby, in accordance with an algorithm (FIG. 2). During the up-peak period each floor's population is computed by monitoring the boarding and de-boarding counts and using those counts to update that floor's population figure throughout that period on an additive basis. After the period has been completed, the floor-by-floor information, which had been maintained in a table, is used to determine the "final" historic based floor population spread using also historic data based at least on the past several active days' of population spread using "exponential smoothing." As a verifying cross-check the lobby's figure, which typically should equal the total building population, is compared to the total of all of the upper floors' populations. The historically based derivation of the floor population is recorded and made available for use in other signal processing functions in the system, such as, for example, prediction methodology for dynamic channeling …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.