System and Method for Distributed Control of a Plant Process

• US 20090043415A1
• Filed: 03/14/2008
• Published: 02/12/2009
• Est. Priority Date: 08/06/2007
• Status: Abandoned Application

• Current Assignee: Chevron USA Incorporated (Chevron Corp.)
• Original Assignee: Chevron USA Incorporated (Chevron Corp.)
• Inventors: Sun, Bruce, Guerra, Eduardo, LeBlanc, Chris, Mirkovic, Vesna, Jones, Frederick W.
• Application Number:
  US12/048,737
• Publication Number:
  US 20090043415A1
• Time in Patent Office: Days
• US Class Current: 700/117
• CPC Class Codes: G05B 19/4183 characterised by data acquisition, e.g. workpiece identification
• CPC Class Codes: G05B 19/4185 characterised by the network communication
• CPC Class Codes: G05B 2219/31181 Controller and device have several formats and protocols, select common one
• CPC Class Codes: G05B 2219/31369 Translation, conversion of protocol between two layers, networks
• CPC Class Codes: G05B 2219/32404 Scada supervisory control and data acquisition
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

Exemplary methods and systems for a distributed control system (DCS) in an industrial environment such as a plant. The DCS includes sensors for monitoring plant processes, and controllers for controlling plant processes. The sensors and controllers each have an associated communication protocol. The DCS also includes an interface that receives data from the sensors, translates the data into a common protocol, and generates control signals based on the translated data to the controllers over a network. The interface communicates with each sensor and controller based on their respective communication protocols.

Claims

1. A system for distributed control of a hydrogen fuel generation and refueling facility, the system comprising:

means for monitoring plural variables of the hydrogen fuel generation and refueling facility using plural sensors, wherein a first sensor communicates a first variable of the hydrogen fuel generation and refueling facility via a first protocol and a second sensor communicates a second variable of the hydrogen fuel generation and refueling facility via a second protocol;

means for controlling plural plant processes associated with the variables of the hydrogen fuel generation and refueling facility; and

processing means for receiving the first and second variables of the hydrogen fuel generation and refueling facility from the monitoring means via the first and second protocols, translating the received data into a common protocol, and sending control signals to the controlling means based on the translated data.

2. The system of claim 1, wherein the controlling means comprises:

a plurality of control platforms, each platform being associated with one of the plant processes.

3. The system of claim 2, wherein the plurality of control platforms includes a safety instrumentation system control platform that monitors each of the other control platforms, and is configured to communicate with the processing means.

4. The system of claim 2, wherein the processing means comprises:

first communication means for communicating data between the control platforms and a remote interface; and

second communication means for communicating data between the control platforms and a local interface,

wherein the second communication means communicates with the control platforms via the first communication means.

5. The system of claim 4, wherein the user interface is at least one of a local interface and a remote interface.

6. The system of claim 1, wherein the processing means communicates the translated data to means for interfacing with a user, and generates control signals based on instructions received from the interfacing means.

7. The system of claim 1, wherein the first and second sensors include at least one of a flame or gas sensor.

8. A system for distributed control of a process of a hydrogen fuel generation and refueling facility, the system comprising:

a plurality of sensors, wherein each sensor monitors at least one variable of the hydrogen fuel generation and refueling facility and a first sensor communicates first variable data of the hydrogen fuel generation and refueling facility via a first protocol and a second sensor communicates second plant variable data of the hydrogen fuel generation and refueling facility via a second protocol;

a plurality of controllers, wherein each controller is configured to control at least one process of the hydrogen fuel generation and refueling facility based on at least one variable of the hydrogen fuel generation and refueling facility; and

an interface that receives first and second variable data of the hydrogen fuel generation and refueling facility from the first and second sensors, translates the received data into a common protocol, and generates control signals based on the translated data to send to the controllers over a network.

9. The system of claim 8, wherein the interface generates a graphical display for monitoring and controlling plant processes.

10. The system of claim 8, wherein the interface comprises a local interface and a remote interface.

11. The system of claim 8, wherein the network comprises:

a lower network and an upper network,

wherein the lower network facilitates data communication between the sensors and controllers; and

the remote interface, and

wherein the upper network facilitates data communication between the sensors and controllers and the local interface.

12. The system of claim 11, wherein the upper network communicates with the sensors and controllers via the lower network.

13. The system of claim 11, wherein the lower network and upper network are secure networks.

14. The system of claim 8, wherein the interface means communicates the translated data to processing means, and generates control signals based on instructions received from the processing means.

15. The system of claim 8, wherein the first and second sensors include at least one of a flame or gas sensor.

16. The system of claim 8, wherein one of the plurality of controllers is a safety instrumentation system control platform that monitors each of the other of the plurality of controllers, and is configured to communicate with the interface.

17. A method for controlling a process of a hydrogen fuel generation and refueling facility, comprising:

monitoring plural variables of the hydrogen fuel generation and refueling facility using plural sensors, wherein a first sensor communicates first variable data of the hydrogen fuel generation and refueling facility via a first protocol and a second sensor communicates second variable data of the hydrogen fuel generation and refueling facility via a second protocol;

controlling plural plant processes associated with the variables of the hydrogen fuel generation and refueling facility through plural controllers;

receiving the first and second plant variable data via the first and second protocols;

translating the received data into a common protocol; and

sending control signals to the controllers based on the translated data.

18. The system of claim 17, wherein the first and second sensors include at least one of a flame or gas sensor.

19. The system of claim 17, wherein one of the plural controllers is a safety instrumentation system control platform that monitors each of the other of the plural controllers.