Methods and apparatus for performing data acquisition and control

• US 7,284,664 B1
• Filed: 01/12/2006
• Issued: 10/23/2007
• Est. Priority Date: 10/22/2001
• Status: Expired due to Term

• Current Assignee: AMETEK Programmable Power, Inc. (Ametek Incorporated)
• Original Assignee: Nihon Electronic Industry Company Limited
• Inventors: Kraplin, Denys L., Ivchenko, Olexiy
• Primary Examiner(s): Eng; David Y.
• Application Number:
  US11/330,586
• Time in Patent Office: 649 Days
• Field of Search: 709/250
• US Class Current: 209/250
• CPC Class Codes: H04L 12/4035 in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit TDM/TDMA multiplex systems per se H04J3/1694; hybrid switching systems H04L12/64

Abstract

Mechanisms and techniques provide a data acquisition basic input output system between a central controller and a set of modules networked to the central controller. The central controller obtains at least one command to be sent to at least one module of the set of modules networked to the central controller and composing a request message containing the command. The request message has an associated timing pattern selected from a plurality of available timing patterns, such as a fixed timing pattern or a variable timing pattern. The central controller transmits the request message to the module(s) according to the associated timing pattern and receives, according to the associated timing pattern, a response message from the module(s). The data acquisition basic input output system communications do not require reliance on transport layer protocols or collision avoidance techniques.

Claims

1. A method comprising:

generating a set of commands, each of which is configured to elicit a response from a different one of multiple data acquisition modules;

providing timing information associated with the set of commands to coordinate responses from the multiple data acquisition modules over a shared communication link; and

transmitting the set of commands to the multiple data acquisition modules; and

receiving the responses from the multiple data acquisition modules over the shared communication link in accordance with the timing information.

2. A method as in claim 1, wherein receiving the responses from the multiple data acquisition modules includes receiving feedback from a given data acquisition module of the multiple data acquisition modules indicating that the given data acquisition module requires more time to transmit data over the shared communication link.

3. A method as in claim 2 further comprising:

in response to receiving the feedback, modifying the timing information associated with the set of commands transmitted on a subsequent query/response data acquisition cycle to allocate more time for the given data acquisition module to transmit data over the shared communication link relative to a previous query/response data acquisition cycle.

4. A method as in claim 1, wherein providing the timing information associated with the commands includes specifying a relative ordering of the multiple data acquisition modules to respond over the shared communication link with respect to each other.

5. A method as in claim 1 further comprising:

for a first query/response data acquisition cycle, specifying a first relative ordering for the multiple data acquisition modules to respond to the commands over the shared communication link; and

on a subsequent query/response data acquisition cycle, modifying the first relative ordering by specifying a second relative ordering for the multiple data acquisition modules to respond to the commands over the shared communication link.

6. A method as in claim 1, wherein providing the timing information includes specifying respective delay times for each of the multiple data acquisition modules to respond to the set of commands.

7. A method as in claim 1, wherein providing the timing information includes specifying respective window times for each of the multiple data acquisition modules to respond to the set of commands.

8. A method as in claim 1, wherein providing the timing information includes:

specifying respective delay times for each of the multiple data acquisition modules to respond to the set of commands;

specifying respective window times for each of the multiple data acquisition modules to respond to the set of commands; and

transmitting the respective delay times and the respective window times over the shared communication link to the multiple data acquisition modules to coordinate the responses from the data acquisition modules over the shared communication link.

9. A method as in claim 1, wherein transmitting the set of commands to the multiple data acquisition modules includes multicasting a bundled message including the set of commands to each of the data acquisition modules.

10. A method as in claim 1, wherein providing the timing information associated with the set of commands to coordinate responses from the multiple data acquisition modules includes selecting a timing pattern in which each of at least two of the multiple data acquisition modules is allocated different amounts of time to respond over the shared communication link.

11. A method as in claim 1, wherein generating the respective commands includes generating a bundled message including the respective commands for each of the multiple data acquisition modules;

wherein providing the timing information associated with the commands includes providing the timing information in the bundled message to coordinate responses from the multiple data acquisition modules over the shared communication link; and

wherein transmitting the respective commands to the multiple data acquisition modules includes transmitting the bundled message including the respective commands and the timing information to each of the data acquisition modules.

12. A method as in claim 11 further comprising:

receiving responses from the multiple data acquisition modules in accordance with the timing information in the bundled message.

13. A method as in claim 12, wherein providing the timing information includes:

specifying response timing associated with a first data acquisition module and a second data acquisition module such that, during respective responses from the first data acquisition module and the second data acquisition module, the respective responses do not interfere with each other when transmitted over the shared communication link.

14. A method as in claim 1 further comprising:

allocating a portion of a future query/response data acquisition cycle for re-transmitting failed communications from one of the data acquisition modules during a previous query/response data acquisition cycle.

15. A central controller comprising:

a communications interface;

a memory;

a processor; and

an interconnection mechanism coupling the communications interface, the memory and the processor;

wherein the memory is encoded with a data acquisition basic input output system application that when performed on the processor, produces a data acquisition basic input output system process that enables the central controller to perform operations of;

generating a set of commands, each of which is configured to elicit a response from a different one of multiple data acquisition modules;

providing timing information associated with the set of commands to coordinate responses from the multiple data acquisition modules over a shared communication link; and

transmitting the set of commands to the multiple data acquisition modules; and

receiving the responses from the multiple data acquisition modules over the shared communication link in accordance with the timing information.

16. A central controller as in claim 15, wherein receiving the responses from the multiple data acquisition modules includes receiving feedback from a given data acquisition module of the multiple data acquisition modules indicating that the given data acquisition module requires more time to transmit data over the shared communication link.

17. A central controller as in claim 16 further supporting operations of:

in response to receiving the feedback, modifying the timing information associated with the set of commands transmitted on a subsequent query/response data acquisition cycle to allocate more time for the given data acquisition module to transmit data over the shared communication link relative to a previous query/response data acquisition cycle.

18. A central controller as in claim 15, wherein providing the timing information associated with the commands includes specifying a relative ordering of the multiple data acquisition modules to respond over the shared communication link with respect to each other.

19. A central controller as in claim 15 further supporting operations of:

for a first query/response data acquisition cycle, specifying a first relative ordering for the multiple data acquisition modules to respond to the commands over the shared communication link; and

on a subsequent query/response data acquisition cycle, modifying the first relative ordering by specifying a second relative ordering for the multiple data acquisition modules to respond to the commands over the shared communication link.

20. A central controller as in claim 15, wherein providing the timing information includes specifying respective delay times for each of the multiple data acquisition modules to respond to the set of commands.

21. A central controller as in claim 15, wherein providing the timing information includes specifying respective window times for each of the multiple data acquisition modules to respond to the set of commands.

22. A central controller as in claim 15, wherein providing the timing information includes:

specifying respective delay times for each of the multiple data acquisition modules to respond to the set of commands;

specifying respective window times for each of the multiple data acquisition modules to respond to the set of commands; and

transmitting the respective delay times and the respective window times over the shared communication link to the multiple data acquisition modules to coordinate the responses from the data acquisition modules over the shared communication link.

23. A central controller as in claim 15, wherein transmitting the set of commands to the multiple data acquisition modules includes multicasting a bundled message including the set of commands to each of the data acquisition modules.

24. A central controller as in claim 15, wherein providing the timing information associated with the set of commands to coordinate responses from the multiple data acquisition modules includes selecting a timing pattern in which each of at least two of the multiple data acquisition modules is allocated different amounts of time to respond over the shared communication link.

25. A central controller as in claim 15, wherein generating the respective commands includes generating a bundled message including the respective commands for each of the multiple data acquisition modules;

wherein providing the timing information associated with the commands includes providing the timing information in the bundled message to coordinate responses from the multiple data acquisition modules over the shared communication link; and

wherein transmitting the respective commands to the multiple data acquisition modules includes transmitting the bundled message including the respective commands and the timing information to each of the data acquisition modules.

26. A central controller as in claim 25 further supporting operations of:

receiving responses from the multiple data acquisition modules in accordance with the timing information in the bundled message.

27. A central controller method as in claim 26, wherein providing the timing information includes:

specifying response timing associated with a first data acquisition module and a second data acquisition module such that, during respective responses from the first data acquisition module and the second data acquisition module, the respective responses do not interfere with each other when transmitted over the shared communication link.

28. A central controller as in claim 15 further supporting operations of:

allocating a portion of a future query/response data acquisition cycle for re-transmitting failed communications from one of the data acquisition modules during a previous query/response data acquisition cycle.

29. A controller comprising:

means for generating a set of commands, each of which is configured to elicit a response from a different one of multiple data acquisition modules;

means for providing timing information associated with the set of commands to coordinate responses from the multiple data acquisition modules over a shared communication link;

means for transmitting the set of commands to the multiple data acquisition modules; and

means for receiving the responses from the multiple data acquisition modules over the shared communication link in accordance with the timing information.