Method for sub-zoning an elevator group
US4895223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/405
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for increasing the transportation capacity of elevators in a building involving dividing the elevators (2-7) into two or more groups, each comprising one or more elevators, in such manner that in certain loading situations the groups will temporarily serve different zones (11, 12) of the building (1). Upward peak traffic conditions are detected and the boundaries between zones (11, 12) are determined and maintained by the steps which include: PA0 (a) detecting by a peak traffic condition, mainly on the basis of elevator loading time and/or the number of people arriving in an elevator lobby (9) of the building (1). PA0 (b) calculating an initial optimal zone boundary value mainly on the basis of traffic statistics and existing transportation capacity. PA0 (c) effecting transition of elevator operation to sub-zoning during upward peak traffic. PA0 (d) re-calculating the optimal zone boundary value mainly on the basis of short-term traffic statistics, the number of people in the elevator lobby and the available transportation capacity. PA0 (e) sensing the need for change in the zone boundary and effecting the desired change as calculated in section (d). PA0 (f) cancelling the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.