Distributed monitoring and control system

• US 7,792,126 B1
• Filed: 05/19/2006
• Issued: 09/07/2010
• Est. Priority Date: 05/19/2005
• Status: Active Grant

• Current Assignee: University of Notre DAME Du Lac, Xylem Vue, Inc. (Xylem, Inc.)
• Original Assignee: University of Notre DAME Du Lac, EmNet, LLC (Xylem, Inc.)
• Inventors: Talley, Jeffrey W., Montestruque, Luis A., Lemmon, Michael D.
• Primary Examiner(s): Patel; Jayanti K
• Assistant Examiner(s): CAMPBELL, MATTHEW T
• Application Number:
  US11/437,384
• Time in Patent Office: 1,572 Days
• Field of Search: 370/315, 370/320, 370/347, 370/386, 370/389, 370/400, 137/1, 137/78.1, 137/312, 137/565.33, 340/3.1, 340/426.13, 340/426.16, 340/426.28, 340/521, 340/531, 340/539.1, 340/540, 340/870.01, 340/870.03, 340/870.07, 340/870.08, 340/870.16, 340/870.17, 405/36, 405/39, 405/52, 405/92, 405/129.57, 405/129.85, 700/3, 700/12, 700/103, 700/108
• US Class Current: 370/400
• CPC Class Codes: E03F 7/00 Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding

Abstract

A distributed monitoring and control system includes a plurality of nodes forming a redundant communication network. Each of the nodes includes a processor, a memory and a transceiver. At least one of the nodes includes a sensor for acquiring information. At least one of the nodes includes an actuator. At least one of the processors is programmed with a control algorithm to receive information acquired from the sensors, calculate a control command and communicate the control command to the actuators for execution.

Claims

1. A distributed monitoring and control system comprising:

a plurality of nodes forming a communication network, wherein each node includes a processor, a memory and a transceiver, wherein said plurality of nodes includes a first node with a sensor for acquiring sensor information, a second node with an actuator, and a third node with an actuator;

wherein said second node is adapted to receive sensor information from said first node and to receive actuator information from said third node;

wherein said third node is adapted to receive sensor information from said first node and to receive actuator information from said second node; and

,

further wherein said processors for said second and said third nodes are each programmed with a distributed control algorithm to determine a control decision for said respective node'"'"'s actuator based upon said sensor information from said first node and said actuator information from the other of said second or said third node.

2. The system of claim 1 wherein said third node is adapted to communicate said control decisions to said third node'"'"'s actuator for execution.

3. The system of claim 2 wherein said control algorithm uses a distributed model-based networked control algorithm.

4. The system of claim 3 wherein said control algorithm is a distributed price-based control algorithm.

5. The system of claim 1 wherein said plurality of nodes communicate using a distributed broadcasting algorithm and a distributed routing algorithm.

6. The system of claim 5 wherein said routing algorithm is a gradient-based stateless distributed routing protocol.

7. The system of claim 1 wherein said sensor information is selected from the group consisting of hydraulic, chemical, biological and physical information in a sewer system.

8. The system of claim 1 wherein said third node'"'"'s actuator is an actuator for altering a condition within a sewer system.

9. A system that monitors and controls a sewer system comprising:

a plurality of nodes forming a communication network, wherein each node includes a processor, a memory and a transceiver, wherein said plurality of nodes includes a plurality of sensor nodes each of which include a sensor for acquiring information selected from the group of hydraulic, chemical, biological and physical information and a plurality of actuator nodes each of which include an actuator for altering a condition within a sewer system, wherein at least one node is adapted to receive information from any other node in the system and to rebroadcast said information to another node which may also receive information from any other node in the system, further wherein each of said actuator nodes is programmed with a distributed control algorithm for determining a control decision for that node'"'"'s actuator, based on sensor information from at least one of said sensor nodes and actuator information from at least one other actuator node.

10. The system of claim 9 wherein said control algorithm programmed in said actuator nodes is a distributed sewer system control algorithm to receive information acquired from said one or more sensors, calculate a control command and communicate said control command to said one or more actuators for execution.

11. The system of claim 9 wherein said plurality of nodes communicate using a distributed broadcasting algorithm and a distributed routing algorithm.

12. The system of claim 11 wherein said routing algorithm is a gradient-based stateless distributed routing protocol.

13. The system of claim 9 wherein said sensor is a hydraulic condition sensor.

14. The system of claim 9 wherein said actuator is a flow controlling device.

15. A method for monitoring and controlling sewer overflow events comprising the steps of:

providing a plurality of nodes forming a distributed communication network, wherein each node includes a processor, a memory, and a transceiver, wherein each of said nodes further includes a sensor for acquiring hydraulic, chemical, biological or physical information, further wherein each of said nodes includes an actuator for altering a condition within a sewer system, further wherein each of said processors is programmed with a distributed combined sewer system control algorithm to receive information acquired from said one or more nodes, calculate a control command and communicate said control command to said one or more actuators for execution; and

altering at least one condition within a sewer system by one of said actuators based on a decision determined at that actuator'"'"'s node.

16. The system of claim 15 wherein said distributed sewer system control algorithm uses a distributed model-based networked control algorithm.

17. The system of claim 15 wherein said distributed sewer system control algorithm is a distributed price-based control algorithm.

18. The system of claim 15 wherein said distributed sewer system control algorithm is adapted to globally reduce sewer flows to an external system by maximizing overall conveyance and storage.

19. The system of claim 15 wherein said distributed sewer system control algorithm is adapted to maximize system performance.