Adapting a plurality of measurement cartridges using cartridge controllers

• US 7,509,445 B2
• Filed: 04/12/2006
• Issued: 03/24/2009
• Est. Priority Date: 04/12/2006
• Status: Active Grant

• Current Assignee: National Instruments Corporation (Emerson Electric Company)
• Original Assignee: National Instruments Corporation (Emerson Electric Company)
• Inventors: Bryson, Kyle, Kellam, Jeffrey J., Odom, Brian Keith, Castro, Rafael
• Primary Examiner(s): Shin; Christopher B
• Application Number:
  US11/403,167
• Publication Number:
  US 20080005406A1
• Time in Patent Office: 1,077 Days
• Field of Search: 710 58- 64, 710303-315, 714 5- 8
• US Class Current: 710/58
• CPC Class Codes: G01D 9/005 Solid-state data loggers

Abstract

System and method for controlling cartridges to perform industrial operation(s). The system may include cartridge controllers coupled to the cartridges, timing and data routing logic coupled to the cartridge controllers, and controlling software coupled to the timing and data routing logic. Each of the cartridge controllers may be operable to detect and establish communications with a respective cartridge based on information retrieved from the cartridge, and adapt input/output signals of the respective cartridge according to instructions specified by the timing and data routing logic. The timing and data routing logic may be operable to synthesize data stream(s) from the adapted input/output signals, wherein each of the data stream(s) includes a respective subset of the adapted input/output signals received from a corresponding subset of the cartridges, and transmit the data stream(s) to the controlling software. The synthesized data stream(s) may appear as corresponding device(s) to the controlling software.

Claims

1. A system, comprising:

a plurality of cartridge controllers;

timing and data routing logic coupled to the plurality of cartridge controllers;

a plurality of cartridges coupled to the cartridge controllers; and

controlling software for controlling the plurality of cartridges, wherein the controlling software is coupled to the timing and data routing logic;

wherein each of the plurality of cartridge controllers is operable to;

detect and establish communications with a respective_cartridge based on information retrieved from the cartridge; and

adapt input/output (I/O) signals of the respective cartridge in accordance with instructions specified by the timing and data routing logic to generate adapted I/O signals;

wherein the timing and data routing logic is operable to;

synthesize one or more data streams from the adapted I/O signals, wherein each of the one or more data streams comprises a respective subset of the adapted I/O signals received from a corresponding subset of the plurality of cartridges; and

transmit the one or more data streams to the controlling software, wherein the synthesized one or more data streams appear as a corresponding one or more devices to the controlling software.

2. The system of claim 1, wherein each of the corresponding one or more devices appears to the controlling software as a single device with I/O types of the corresponding subset of the plurality of cartridges.

3. The system of claim 1, wherein each of the plurality of cartridge controllers is operable to detect coupling and/or decoupling of the respective cartridge during operation, and wherein, after coupling, each of the cartridge controllers is operable to perform said detecting, said establishing communications, and said adapting I/O signals.

4. The system of claim 1, wherein, to detect and establish communications, each of the plurality of cartridge controllers is operable to:

query the respective cartridge for cartridge type using an identification protocol;

determine a communication protocol based on the cartridge type; and

establish communications with the respective cartridge based on the communication protocol.

5. The system of claim 1, wherein, to adapt the I/O signals of the respective cartridge, each of the plurality of cartridge controllers is operable to:

provide a memory map to the timing and data routing logic that is substantially generic to the cartridge type of the respective cartridge, wherein the memory map stores one or more of;

information received from the respective cartridge;

information to be transmitted to the respective cartridge;

information for configuring the respective cartridge;

or

information for configuring the system.

6. The system of claim 1, wherein, to adapt the I/O signals of the respective cartridge, each of the plurality of cartridge controllers is operable to:

format the I/O signals received from the respective cartridge into a consistent signal format;

calibrate the I/O signals received from the respective cartridge; and

/or

perform one or more sign extensions on the I/O signals received from the respective cartridge.

7. The system of claim 1, wherein the timing and data routing logic is operable to provide instructions to the plurality of cartridge controllers regarding timing and/or triggering for synchronized operation, and wherein, in response to receiving the instructions, each of the plurality of cartridge controllers is operable to perform said adapting the I/O signals of the respective cartridge.

8. The system of claim 7, wherein, during synchronized operation, in response to the provided instructions, the plurality of cartridge controllers are operable to implement a plurality of related sampling rates, and wherein the related sampling rates have ratios with respect to each other.

9. The system of claim 7, wherein the timing and data routing logic is operable to select from a plurality of synchronization schemes to implement the synchronized operation.

10. The system of claim 9, wherein the plurality of synchronization schemes are operable to:

transmit timing signals to the plurality of cartridge controllers;

receive timing signals from one or more of the plurality of cartridge controllers and/or one or more of the plurality of cartridges and transmit the timing signals to corresponding other cartridge controllers of the plurality of cartridge controllers; and

/or

synchronize the I/O signals received from the plurality of cartridge controllers.

11. The system of claim 1, wherein one or more of the plurality of cartridge controllers and/or one or more of the plurality of cartridges implement one or more analog to digital and/or digital to analog conversions.

12. The system of claim 11, wherein the one or more of the plurality of cartridge controllers and/or the one or more of the plurality of cartridges implement one or more of:

multiplexed analog to digital conversion;

simultaneously sampled analog to digital conversion;

or

sigma delta analog to digital conversion.

13. The system of claim 1, wherein, if data from the respective cartridge is received at a slower rate than is required by the timing and data routing logic, each cartridge controller is operable to provide data to the timing and data routing logic at a rate matched to the timing and data routing logic, and wherein the provided data appears to the timing and data routing logic to be sampled at a required rate.

14. The system of claim 1, wherein each cartridge controller is operable to provide phase shifting of timing and/or triggering signals to align with system timing requirements specified by the timing and data routing logic and/or to provide coherent sampling across multiple cartridges.

15. The system of claim 1, wherein the timing and data routing logic and/or the controlling software is operable to:

dynamically calculate a system timing rate based on one or more of;

types of currently operating cartridges coupled to the system;

sampling rates of the currently operating cartridges coupled to the system;

selected channels of the currently operating cartridges coupled to the system;

or

the plurality of cartridges; and

transmit the system timing rate to the plurality of cartridge controllers.

16. The system of claim 15, wherein the timing and data routing logic is operable to dynamically calculate the system timing rate based on feedback from a subset of the plurality of cartridge controllers.

17. The system of claim 1, wherein one or more of the timing and data routing module, a subset of the plurality of cartridge controllers, or a subset of the plurality of cartridges are operable to provide one or more counter resources for counting operations associated with the plurality of cartridges.

18. The system of claim 1, wherein the timing and data routing logic is operable to dynamically route timing and/or triggering signals to each of the plurality of cartridges based on the type of the respective cartridge coupled to the system.

19. The system of claim 1, wherein the plurality of cartridge controllers are operable to operate autonomously when the timing and data routing logic does not provide instructions to the plurality of cartridge controllers.

20. The system of claim 19, wherein, during autonomous operation, the plurality of cartridge controllers implement a plurality of independent sampling rates.

21. The system of claim 1, wherein the instructions specified by the timing and data routing logic comprise one or more configuration commands and/or one or more firmware updates.

22. The system of claim 1, wherein the plurality of cartridge controllers, the timing and data routing logic, and/or the controlling software, is comprised in a programmable hardware element (PHE).

23. The system of claim 1, wherein the timing and data routing logic is operable to acquire data according to one or more scan lists.

24. The system of claim 23, wherein channels of each of the plurality of cartridges are mapped to the one or more scan lists in one or more look-up tables.

25. The system of claim 24, wherein the one or more scan lists comprise one or more dynamic scan lists, wherein the one or more dynamic scan lists are operable to change one or more sampling rates associated with one or more channels associated with one or more of the plurality of cartridges.

26. The system of claim 1, wherein the controlling software is operable to transmit output data to one or more of the plurality of cartridges via respective cartridge controllers.

27. The system of claim 1, wherein the timing and data routing logic is operable to receive output data from the controlling software for a corresponding device of the one or more corresponding devices and route the data to one or more corresponding cartridges of the corresponding subset of the plurality of cartridges.

28. The system of claim 1, wherein each of the plurality of cartridges is operable to simultaneously provide data and system triggering to the timing and data routing logic via a respective cartridge controller.

29. The system of claim 1, wherein the timing and data routing logic is operable to assign one or more cartridge controllers to an independent data stream using direct memory access (DMA).

30. The system of claim 1, wherein the system comprises one or more of:

a stand-alone system;

a Universal Serial Bus (USB) system;

an industrial network system;

an Ethernet system;

or

a plug-in board system.

31. The system of claim 1, wherein each of the plurality of cartridges comprises one or more of:

integrated conditioning logic;

integrated isolation logic;

signal conditioning logic;

signal conversion logic;

communication logic;

controlling logic;

networking logic;

or

power supply logic.

32. The system of claim 1, wherein each of the plurality of cartridges is operable to implement one or more of:

mass storage functionality;

communication functionality;

networking functionality;

data-acquisition (DAQ) functionality;

analog functionality;

digital functionality;

control functionality;

measurement functionality;

analysis functionality;

user interface functionality;

image-acquisition functionality;

or

automation functionality.

33. The system of claim 1, wherein the timing and data routing logic is operable to send and/or receive timing and triggering signals to and/or from other systems for synchronizing operations across the other systems.

34. They system of claim 1, wherein each of the plurality of cartridges is operable to detect and establish communications with the respective cartridge based on information retrieved from the cartridge.

35. A method, comprising:

detecting and establishing communication with a plurality of cartridges via a plurality of respective cartridge controllers;

receiving instructions specifying desired adaptations of input/output (I/O) signals of the plurality of cartridges;

adapting the I/O signals of the plurality of cartridges in accordance with the received instructions to generate adapted I/O signals;

synthesizing one or more data streams from the adapted I/O signals, wherein each of the one or more data streams comprises a respective subset of the adapted I/O signals received from a corresponding subset of the plurality of cartridges; and

transmitting the one or more data streams to controlling software, wherein the synthesized one or more data streams appear as a corresponding one or more devices to the controlling software.

36. A system, comprising:

means for detecting and establishing communication with a plurality of cartridges via a plurality of respective cartridge controllers;

means for receiving instructions specifying desired adaptations of input/output (I/O) signals of the plurality of cartridges;

means for adapting the I/O signals of the plurality of cartridges in accordance with the received instructions to generate adapted I/O signals;

means for synthesizing one or more data streams from the adapted I/O signals, wherein each of the one or more data streams comprises a respective subset of the adapted I/O signals received from a corresponding subset of the plurality of cartridges; and

means for transmitting the one or more data streams to controlling software, wherein the synthesized one or more data streams appear as a corresponding one or more devices to the controlling software.