Elevator access security
US6707374B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/4676
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Directionally sensitive motion detectors at the entrances to elevator cars provide a running count of passenger population aboard the cars. Passengers wear portable devices that transmit personal IDs, and a check of IDs of passengers on the elevator along with the total passenger count will determine if each of the passengers exiting the elevator corresponds to an ID authorized to enter a particular floor of the building, or determine if each of the passengers aboard the car corresponds to an ID authorized to make a particular trip (the particular elevator at a particular time). Unauthorized exit may cause an alarm or other events. If any passenger does not have an ID authorized for a secure trip, an announcement urges the unauthorized passenger to leave for some period of time, following which an alarm is sounded and the elevator is prevented from moving. Pairs of motion detectors may provide directional sensitivity, or doppler motion detectors may be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.