Input/output module with multi-channel switching capability

• US 9,727,511 B2
• Filed: 02/10/2015
• Issued: 08/08/2017
• Est. Priority Date: 12/30/2011
• Status: Active Grant

• Current Assignee: Analog Devices, Inc.
• Original Assignee: Bedrock Automation Platforms, Inc. (Analog Devices, Inc.)
• Inventors: Markovic, Craig, Rooyakkers, Albert, Calvin, James G.
• Primary Examiner(s): Tsai, Henry
• Assistant Examiner(s): Hassan, Aurangzeb
• Application Number:
  US14/618,292
• Publication Number:
  US 20150154136A1
• Time in Patent Office: 910 Days
• Field of Search: None
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices
• CPC Class Codes: G06F 13/4022 using switching circuits, e.g. switching matrix, connection or expansion network G06F13/4009 takes precedence
• CPC Class Codes: G06F 13/4027 using bus bridges G06F13/4022 takes precedence
• CPC Class Codes: G06F 13/4072 Drivers or receivers G06F13/4086 takes precedence; for multistate logic circuits H03K19/0002
• CPC Class Codes: G06F 13/4086 Bus impedance matching, e.g. termination
• CPC Class Codes: G06F 13/409 Mechanical coupling back panels H05K7/1438
• CPC Class Codes: G06F 21/44 Program or device authentication
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 63/062 for key distribution, e.g. centrally by trusted party cryptographic mechanisms or cryptographic arrangements for key distribution involving a central third party H04L9/0819
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• 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 9/083 involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
• CPC Class Codes: H04L 9/3228 One-time or temporary data, i.e. information which is sent for every authentication or authorization, e.g. one-time-password, one-time-token or one-time-key
• CPC Class Codes: H04L 9/3263 involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823
• CPC Class Codes: H04N 7/104 Switchers or splitters
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The present disclosure is directed to an input/output module. In some embodiments, the input/output module includes: a plurality of communication channels, each channel of the plurality of communication channels configured to connect to one or more field devices; switch fabric configured to selectively facilitate connectivity between an external control module and the one or more field devices via the plurality of communication channels; a serial communications port configured for connecting the input/output module to the control module in parallel with a second input/output module, the serial communications port configured for transmitting information between the input/output module and the control module; and a parallel communications port configured for separately connecting the input/output module to the control module, the parallel communications port configured for transmitting information between the input/output module and the control module, and transmitting information between the input/output module and the second input/output module.

Claims

1. A control system comprising:

a control module having a first encasement configured to mate with a support frame;

an input/output module having a second encasement configured to mate with the support frame, the input/output module communicatively coupled with the control module, the input/output module including a plurality of communication channels within the second encasement, each channel of the plurality of communication channels configured to connect to one or more field devices, the input/output module further including switch fabric within the second encasement, the switch fabric configured to selectively facilitate connectivity between the control module and the one or more field devices via the plurality of communication channels;

a serial communications interface configured for connecting the input/output module to the control module, the serial communications interface connecting the input/output module in parallel with a second input/output module, the serial communications interface configured for transmitting information between the input/output module and the control module; and

a parallel communications interface configured for separately connecting the input/output module to the control module, the parallel communications interface configured for transmitting information between the input/output module and the control module, and transmitting information between the input/output module and the second input/output module.

2. The control system of claim 1, wherein the serial communications interface comprises a multidrop bus.

3. The control system of claim 1, wherein the parallel communications interface comprises a cross switch.

4. The control system of claim 1, wherein the control module is configured to assign the input/output module a unique identifier associated with a physical location where the input/output module is physically connected to the control module.

5. The control system of claim 1, wherein the serial communications interface is configured for connecting the input/output module to a redundant control module in parallel, and the parallel communications interface is configured for separately connecting the input/output module to the redundant control module.

6. The control system of claim 1, further comprising a power module for supplying electrical power to the input/output module.

7. The control system of claim 1, wherein the input/output module is configured to supply electrical power to at least one field device via a respective channel of the plurality of communication channels.

8. The control system of claim 1, wherein the plurality of communication channels comprise a plurality of Ethernet channels.

9. The control system of claim 1, wherein the input/output module further includes a controller coupled to the switch fabric, the controller configured to accommodate multiple communication standards running concurrently on respective channels of the plurality of communication channels including at least two of:

an Ethernet bus, an H1 field bus, a Process Field Bus (PROFIBUS), a Highway Addressable Remote Transducer (HART) bus, a Modbus, and an Object Linking and Embedding for Process Control Unified Architecture (OPC UA) bus.

10. The control system of claim 1, wherein the input/output module is operable as at least one of an Object Linking and Embedding for Process Control Unified Architecture (OPC UA) client or an OPC UA server.

11. The control system of claim 1, wherein the input/output module is configured to synchronize the one or more field devices according to an IEEE 1588 timing protocol.

12. The control system of claim 1, further comprising a device lifetime management system in communication with the input/output module, wherein the device lifetime management system is configured to authenticate the one or more field devices.

13. An input/output module comprising:

an encasement configured to mate with a support frame;

a plurality of communication channels within the encasement, each channel of the plurality of communication channels configured to connect to one or more field devices;

switch fabric within the encasement, the switch fabric configured to selectively facilitate connectivity between an external control module and the one or more field devices via the plurality of communication channels;

a serial communications port configured for connecting the input/output module to the control module in parallel with a second input/output module, the serial communications port configured for transmitting information between the input/output module and the control module; and

a parallel communications port configured for separately connecting the input/output module to the control module, the parallel communications port configured for transmitting information between the input/output module and the control module, and transmitting information between the input/output module and the second input/output module.

14. The input/output module of claim 13, wherein the plurality of communication channels comprise a plurality of Ethernet channels.

15. The input/output module of claim 14, wherein the input/output module is configured to supply electrical power to at least one field device via a respective Ethernet channel of the plurality of Ethernet channels.

16. The input/output module of claim 13, further comprising a controller coupled to the switch fabric, the controller configured to accommodate multiple communication standards running concurrently on respective channels of the plurality of communication channels including at least two of:

an Ethernet bus, an H1 field bus, a Process Field Bus (PROFIBUS), a Highway Addressable Remote Transducer (HART) bus, a Modbus, and an Object Linking and Embedding for Process Control Unified Architecture (OPC UA) bus.

17. The input/output module of claim 13, wherein the controller is configured to run at least one of an Object Linking and Embedding for Process Control Unified Architecture (OPC UA) client communications/control protocol or an OPC UA server communications/control protocol.

18. The input/output module of claim 13, wherein at least one of the serial communications port or the parallel communications port comprises an electromagnetic connector forming a first magnetic circuit portion, including:

a first core member; and

a first coil disposed of the first core member, the electromagnetic connector configured to mate with a second electromagnetic connector, the second electromagnetic connector configured to form a second magnetic circuit portion and comprising a second core member and a second coil disposed of the second core member, the first core member and the second core member configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the electromagnetic connector is mated with the second electromagnetic connector, the magnetic circuit configured to induce a signal in the first coil when the second coil is energized.

19. The input/output module of claim 18, wherein the first coil comprises a planar winding disposed of a printed circuit board.

20. The input/output module of claim 18, wherein the first core member comprises an E-shaped core member.

21. The input/output module of claim 18, wherein the magnetic circuit formed from the first core member and the second core member comprises an air gap.