System and method for wireless process communication over distinct networks

• US 8,315,263 B2
• Filed: 06/18/2009
• Issued: 11/20/2012
• Est. Priority Date: 06/18/2008
• Status: Active Grant

• Current Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Original Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Inventors: Enns, Frederick, Zielinski, Martin, Gutierrez, Jose A.
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Choi, Eunsook
• Application Number:
  US12/487,018
• Publication Number:
  US 20090316628A1
• Time in Patent Office: 1,251 Days
• Field of Search: None
• US Class Current: 370/400
• CPC Class Codes: H04L 12/40006 Architecture of a communication node current supply arrangements H04L12/10; intermediate storage or scheduling H04L49/90
• CPC Class Codes: H04L 2012/4026 Bus for use in automation systems
• CPC Class Codes: H04L 45/52 Multiprotocol routers
• CPC Class Codes: H04L 61/106 across networks, e.g. mapping telephone numbers to data network addresses
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/085 specially adapted for interworking of IP-based networks with other networks
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 88/16 Gateway arrangements
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A dual-mode router for conveying process communication packets across a plurality of distinct wireless process communication networks is provided. The router includes wireless communication circuitry and a controller coupled to the wireless communication circuitry. The wireless communication circuitry is configured to interact with signals from each of the plurality of distinct wireless process communication networks. The controller is configured to adapt process communication packets from a first distinct wireless process communication network for transmission over a second distinct wireless process communication network. Methods for configuring the distinct wireless process communication networks and relaying process packets over the distinct wireless process communication networks are also provided.

Claims

1. A dual-mode router for conveying process communication packets across a plurality of distinct wireless process communication networks, the router comprising:

wireless radio frequency communication circuitry configured to interact with signals from a WirelessHART network and an International Society of Automation (ISA) 100.11a network;

a controller coupled to the wireless radio frequency communication circuitry, the controller being configured to adapt process communication packets from the WirelessHART network for transmission over the ISA 100.11a wireless process communication network;

wherein adapting the process communication packets includes encapsulating the WirelessHART packet'"'"'s payloads in ISA100.11a packets; and

wherein adapting the process communication packets includes translating WirelessHART packet header information into ISA100.11a headers.

2. The dual-mode router of claim 1, wherein the controller is further configured to coordinate system management for the WirelessHART network and the ISA 100.11a networks.

3. The dual-mode router of claim 1, wherein the controller is configured generate an ISA100.11a payload based on an encapsulated WirelessHART packet such that the full WirelessHART packet can be reconstructed when the WirelessHART packet exits the ISA100.11a network.

4. The dual-mode router of claim 1, wherein the controller is configured to provide communication between devices of the WirelessHART network through the ISA 100.11a network.

5. The dual-mode router of claim 1, wherein the dual-mode router is intrinsically safe.

6. A method of configuring a distinct first wireless process communication network based on a second distinct wireless process communication network, the method comprising:

obtaining a time-base from the second distinct wireless process communication network;

setting a time-base in the first distinct wireless process communication network based on the time-base obtained from the second distinct wireless process communication network;

wherein the first distinct wireless process communication network is a WirelessHART network; and

wherein the second distinct wireless process communication network is an ISA 100.11a network;

providing process packet collision avoidance over the first and second distinct wireless process communication networks; and

relaying process packets between the first and second distinct wireless process communication networks.