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US 11,595,844 B2Granted
Plant system and method
AssigneeYokogawa Electric Corporation
InventorHideo Nishimura
Life of this patent
Estimating the term…
Abstract
A plant system includes: an access node connected to a network; a plurality of controllers configured to perform distributed control on a plurality of field devices provided in a plant; and a wireless communication unit provided in each group of a plurality of groups into which the plurality of controllers are grouped and connected to each controller in the corresponding group via a wired connection, and configured to connect each controller to the access node via a wireless connection.
Claims11
A plant system comprising:
- an access node including:
- a signal processing unit connected to a network;
- and
- a plurality of transmitting/receiving units connected to the signal processing unit and each provided at different locations in a plant, at least a part of a coverage area covered by each of the plurality of transmitting/receiving units being overlapped;
- a plurality of controllers configured to perform distributed control on a plurality of field devices provided in the plant;
- and
- a wireless communication unit provided in each group of a plurality of groups into which the plurality of controllers are grouped and connected to each controller in the corresponding group via a wired connection, and configured to connect each controller to the access node via a wireless connection, wherein
- different transmitting/receiving units among the plurality of transmitting/receiving units communicate, via the same wireless communication unit, with the same controller among the plurality of controllers.
5 more elements
A method applied to:
- an access node including:
- a signal processing unit connected to a network;
- and
- a plurality of transmitting/receiving units connected to the signal processing unit and each provided at different locations in a plant, at least a part of a coverage area covered by each of the plurality of transmitting/receiving units being overlapped;
- a plurality of controllers configured to perform distributed control on a plurality of field devices provided in the plant;
- and
- a wireless communication unit provided in each group of a plurality of groups into which the plurality of controllers are grouped and connected to each of the plurality of controllers in the corresponding group via a wired connection, wherein
- the method comprises connecting each of the plurality of controllers to the access node via a wireless connection via a wireless communication unit, and
- different transmitting/receiving units among the plurality of transmitting/receiving units communicate, via the same wireless communication unit, with the same controller among the plurality of controllers.
6 more elements
Dependencies are inferred from the claim text.