Invention Grant
- Patent Title: Management of daisy chain connected communication network of elevator fixtures with redundant data paths
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Application No.: US16677797Application Date: 2019-11-08
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Publication No.: US11252242B2Publication Date: 2022-02-15
- Inventor: Jason R. Armistead , Rob Greger , SaiPraveen Reddy Polimera , Sajan Shrestha , Paul A. Stranieri
- Applicant: Otis Elevator Company
- Applicant Address: US CT Farmington
- Assignee: Otis Elevator Company
- Current Assignee: Otis Elevator Company
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: H04L29/08
- IPC: H04L29/08 ; H05B47/175 ; H04L12/44 ; H04L12/46

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.
Public/Granted literature
- US20200153913A1 MANAGEMENT OF DAISY CHAIN CONNECTED COMMUNICATION NETWORK OF ELEVATOR FIXTURES WITH REDUNDANT DATA PATHS Public/Granted day:2020-05-14
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