Modular operational elevator control system
US4497391A · kind A · utility
26Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1983 |
| Grant date | Feb 5, 1985 |
| Priority date | — |
| Expiry date | Oct 27, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/463
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator control system wherein signals between fixtures and the controller are provided in time-division, half-duplex multiplexing protocol is disclosed. Remote stations (64, 150) serialize multiple fixture inputs (66-69) and outputs (106-109) and are characterized for response during particular time slots by binary address means (84). A master station (90) serializes multiple controller inputs (102-105) and outputs (93-96) and is responsive for all time slots in either a transmit or receive mode. A portion (82) of the controller (78) provides clocking (76) and dynamic addressing (98) for the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.