Systems and methods for determining a topology of an ethernet ring in a building management system
US10116517B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2017 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/42
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method of determining a topology of devices in an Ethernet network of a building management system (BMS). The method includes discovering a number and identification of devices within the Ethernet ring. The method further includes, for each device discovered in the Ethernet ring, disabling an Ethernet port of one of the device in the Ethernet ring; broadcasting a ring port request onto the Ethernet ring; receiving a ring port response from each of the devices having received the ring port request; and incrementing a count associated with each device based on receiving a ring port response from the device. The method then repeats the above steps until each device in the Ethernet ring has had an Ethernet port disabled. The method further includes determining the topology of the devices in the Ethernet ring by ordering the devices in the Ethernet ring based on the value of the count associated with each device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.