Management of daisy chain connected communication network of elevator fixtures with redundant data paths
US11252242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Apr 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/196
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of interconnecting a daisy chain communication network having a terminal managers and a plurality of managed switches and a plurality of fixtures operable as clients of a client server network. The method also includes transmitting a discovery message to a first fixture and a second fixture, capturing the discovery message in the first fixture and the second fixture, and determining a first head fixture and at least one of a second head fixture and a tail fixture. Furthermore, the method also includes discovering an intermediate fixture based on the first head fixture and the at least one of a second head fixture and a tail fixture, resolving which of the first head fixture and the at least one of a second head fixture and a tail fixture is to be identified as an active head fixture, and establishing the active head fixture and a passive tail fixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.