WIRELESS NETWORKS USING A ROOTED, DIRECTED TOPOLOGY

• US 20090201840A1
• Filed: 12/09/2008
• Published: 08/13/2009
• Est. Priority Date: 02/08/2008
• Status: Abandoned Application

• Current Assignee: The Timken Company
• Original Assignee: The Timken Company
• Inventors: Lindsay, Kenneth W., Pfeiffer, Loren K. JR.
• Application Number:
  US12/330,555
• Publication Number:
  US 20090201840A1
• Time in Patent Office: Days
• US Class Current: 370/310
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Systems and methods for establishing a rooted, directed network that acquires and passes sensor data. In one embodiment, the network includes a controller, a logging device, one or more routers, and one or more end nodes. Each network device includes at most one parent node and a unique network message path. The network is established in an ad hoc manner without a need for routing tables. Other embodiments of the invention provide a rooted, directed network for monitoring industrial equipment such, as pumps, fans, rolls, gearboxes, motors, and bearings.

Claims

1. A token-less system for routing data from sensors, the system comprising:

a rooted, directed network, the network including

a network controller configured to

establish communication paths with a plurality of other network devices,

wherein there is at most one communication path between the controller and any one of the plurality of other network devices;

one or more self-powered end nodes, each of the self-powered end nodes having no more than one parent node and configured to

establish a communication path with the network controller,

wherein there is at most one communication path between one of the one or more end nodes and the network controller, and

each of the end nodes transmits sensor data to the network controller.

2. The system of claim 1, further comprising

one or more network routers, each of the network routers having no more than one parent node and configured to

establish communication paths with a plurality of end nodes, a plurality of other network routers, and the network controller,

wherein there is at most one communication path between one of the one or more network routers and any one of the plurality of end nodes, any one of the plurality of other network routers, and the network controller.

3. The system of claim 1, wherein the network controller is further configured to generate

a network address,

a network link request acknowledgement, and

a quality report.

4. The system of claim 1, wherein the network controller is further configured to transmit

a network link request confirmation,

a network link request,

a quality report, and

a data packet.

5. The system of claim 2, wherein each of the one or more network routers is further configured to generate

a network link request acknowledgement, and c

a quality report.

6. The system of claim 2, wherein each of the one or more network routers is further configured to transmit

a network link request,

a network link request acknowledgement,

a network link request confirmation,

a quality report, and

a data packet.

7. The system of claim 1, wherein the rooted, directed network is established in an ad hoc manner.

8. The system of claim 1, wherein the rooted, directed network is a radio frequency network.

9. The system of claim 1, wherein the sensor data includes temperature data.

10. The system of claim 1, wherein the sensor data includes vibration data.

11. The system of claim 1, further comprising a logging device configured to store a plurality of messages.

12. A system for monitoring industrial equipment, the system comprising:

a rooted, directed network, the network including

a network controller configured to

establish communication paths with a plurality of other network devices,

wherein there is at most one communication path between the controller and any one of the plurality of other network devices;

one or more network routers, each of the network routers having no more than one parent node and configured to

establish communication paths with a plurality of industrial monitoring devices, a plurality of other network routers, and the network controller,

wherein there is at most one communication path between one of the one or more network routers and any one of the plurality of industrial monitoring devices, any one of the plurality of other network routers, and the network controller.

one or more industrial monitoring devices, each of the industrial monitoring devices linked to no more than one parent node and configured to

establish a communication path with one of the network routers or the network controller,

wherein there is at most one communication path between one of the one or more industrial monitoring devices and any one of the one or more network routers or the network controller,

each of the industrial monitoring devices further configured to transmit sensor data to the network controller.

13. The system of claim 12, further comprising a logging device configured to store a plurality of messages.

14. The system of claim 12, wherein the industrial monitoring devices includes a temperature sensor.

15. The system of claim 12, wherein the industrial monitoring devices include a vibration sensor.

16. The system of claim 12, wherein the rooted, directed network is a token-less network.

17. The system of claim 12, wherein the rooted, directed network is an RF network.

18. The system of claim 12, wherein the network is established in an ad hoc manner.

19. A method for routing data, the method comprising:

establishing a rooted, directed wireless network by

designating a network controller, the network controller capable of

establishing, in an ad hoc manner, communication paths with a plurality of other network devices,

wherein there is at most one communication path between the controller and any one of the plurality of other network devices,

the network controller further capable of

generating network addresses,

passing messages to a logging device,

generating one or more network messages, and

transmitting one or more network messages over each communication path;

initializing one or more battery-operated network end nodes, the battery-operated network end nodes having no more than one parent node and capable of

establishing a communication path with one of a network router or the network controller,

wherein there is at most one communication path between one of the one or more end nodes and the network controller,

the end nodes further configured to transmit sensor data to the controller.

20. The method of claim 19, further comprising

initializing one or more network routers, each of the network routers having no more than one parent node and capable of

establishing communication paths with a plurality of end nodes, a plurality of other network routers, and the network controller,

wherein there is at most one communication path between one of the one or more network routers and any one of the one or more end nodes, any one of the one or more other network routers, and the network controller.

21. The method of claim 20, further comprising configuring each of the network routers to generate one or more network messages and transmitting one or more network messages over each communication path.

22. The method of claim 19, further comprising configuring the controller to

generate a network address,

generate a network link request acknowledgement,

generate a quality report,

transmit a network link request confirmation,

transmit a quality report,

transmit a network link request, and

transmit a data packet.

23. The method of claim 19, wherein establishing a rooted, directed wireless network includes establishing a token-less network.

24. The method of claim 19, wherein establishing a rooted, directed wireless network includes establishing a radio frequency network.

25. The method of claim 19, further comprising designating a logging device configured to store a plurality of network messages.