公开(公告)号：US20200153913A1

公开(公告)日：2020-05-14

申请号：US16677797

申请日：2019-11-08

Applicant: Otis Elevator Company

Inventor： Jason R. Armistead ,  Rob Greger ,  SaiPraveen Reddy Polimera ,  Sajan Shrestha ,  Paul A. Stranieri

IPC: H04L29/08 ,  H04L12/46 ,  H04L12/44 ,  H05B37/02

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.

公开(公告)号：US11252242B2

公开(公告)日：2022-02-15

申请号：US16677797

申请日：2019-11-08

Applicant: Otis Elevator Company

Inventor： Jason R. Armistead ,  Rob Greger ,  SaiPraveen Reddy Polimera ,  Sajan Shrestha ,  Paul A. Stranieri

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.