Adaptive data acquisition multiplexing system and method

• US 4,974,181 A
• Filed: 04/15/1988
• Issued: 11/27/1990
• Est. Priority Date: 04/15/1988
• Status: Expired due to Fees

• Current Assignee: The United States of America As Represented By The Secretary of Agriculture
• Original Assignee: The United States of America As Represented By The Secretary of Agriculture
• Inventors: Salazar, George A., Haddick, Clyde M. Jr., Sinderson, Richard L., Venkatesh, Chikkabelarangala N., Spahn, Caroll J.
• Primary Examiner(s): Lall, Parshotam S.
• Assistant Examiner(s): Cosimano, Edward R.
• Application Number:
  US07/182,266
• Time in Patent Office: 956 Days
• Field of Search: 324/115, 364/483, 364/485, 364/487, 364/550, 364/551.01
• US Class Current: 702/182
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: G08C 19/00 Electric signal transmission systems G08C17/00 takes precedence

Abstract

An adaptive data acquisition multiplexing system having a monitor terminal and one or more remote terminals with a communication link between them. The remote terminals each include signal conditioning for a plurality of sensors. Upon commands from the monitor terminal, signals providing the remote terminals'"'"' current configuration and status, and instructions for changing the remote terminal configuration, are transmitted from each remote terminal to the monitor terminal. Menu driven prompts at the monitor terminal permit commands to be transmitted from the monitor terminal to the remote terminals, selectively altering the configuration of any remote terminal to enable it to acquire and transmit data, as well as its configuration and status information, in the desired format. Alterations in any remote terminal'"'"'s configuration can then be verified at the monitor terminal.

Claims

1. An adaptive data acquisition multiplexing system comprising:

monitor terminal means for

generating system configuration and reconfiguration programming commands and

providing visual indications of output parameter measurements, operating status, and configuration of said system;

at least one remote terminal means disposed remotely of

said monitor terminal means for

generating a plurality of said parameter measurements in functional dependence on said system configuration and reconfiguration commands and

generating indications of remote terminal configuration status; and

for

transmitting said measurements and said status to said monitor terminal means.

2. The apparatus of claim 1 wherein said at least one remote terminal means includes:

first storage means for storing a plurality of instructions for prompting said system reconfiguration programming commands; and

wherein

said monitor terminal means further includes display means for sequentially displaying visual representations of said plurality of instructions.

3. The apparatus of claim 2 wherein said at least one remote terminal means further includes second storage means for storing said system configuration and reconfiguration programming commands.

4. The apparatus of claim 3 wherein at least one of said first and second storage means is electrically eraseable in response to a signal generated at said monitor terminal means.

5. The apparatus of claim 4 wherein said remote terminal means further includes:

means responsive to said system configuration and reconfiguration programming commands for altering at least one parameter measurement characteristic associated with measurement of at least one of said plurality of said parameter measurements.

6. The apparatus of claim 5 wherein said at least one parameter measurement characteristic is at least two characteristics selected from the group including;

gain, automatic gain rescaling, bias, sampling rate, and channel selection.

7. A method for reconfiguring a data acquisition multiplexing system having a monitor terminal and at least one remote terminal comprising:

storing in said remote terminal a plurality of instructions for prompting system reconfiguration programming commands;

transmitting said instructions to said monitor terminal;

generating sequentially visual displays corresponding to said instructions at said monitor terminal;

inputting said programming commands in functional response to said visual displays;

transmitting said programming commands to said remote terminal;

reconfiguring said remote terminal in response to said transmitted programming commands; and

generating a plurality of parameter measurements in said remote terminal.

8. The method of claim 7 further including:

storing said transmitted programming commands in said remote terminal; and

wherein

said plurality of measurements are generated in response to said reconfiguring of said remote terminal.

9. The method of claim 8 wherein said system is real-time reconfigurable whereby said reconfiguring is during said generating of said measurements.

10. The method of claim 9 further including:

transmitting said plurality of measurements to said monitor terminal; and

generating visual displays of said plurality of measurements at said monitor terminal.

11. The method of claim 10 further including:

generating at said remote terminal indications of the configuration status of said terminal;

transmitting said configuration status indications to said monitor terminal; and

displaying at said monitor terminal visual representations of said configuration status indications.

12. The method of claim 11 wherein said step of reconfiguring said remote terminal comprises:

varying at least one of the group comprised of the gain, automatic gain rescaling, bias, sampling rate, or channel selection corresponding to at least one of said measurements.

13. The method of claim 12 wherein said varying of said sampling rate depends on available bandwidth for said transmitting of said plurality of measurements to said remote terminal.

14. A reconfigurable data acquisition multiplexing system comprising:

a monitor terminal and at least one remote terminal;

wherein said remote terminal includes;

means for storing a plurality of instructions for prompting system configuration programming commands,

means for transmitting said instructions to said monitor terminal, and

means for generating a plurality of parameter measurements;

said monitor terminal including;

means for sequentially generating visual displays corresponding to said instructions, and

means for inputting said programming commands in functional response to said visual displays;

and said remote terminal further including

means for reconfiguring said remote terminal in response to said transmitting programming commands.

15. The apparatus of claim 14 further including:

means for storing said transmitted programming commands in said remote terminal; and

means for generating said plurality of measurements in response to said reconfiguring of said remote terminals.

16. The apparatus of claim 15 further including:

means for reconfiguring said remote terminal in real time during said generating of said measurements.

17. The apparatus of claim 16 further including:

means for transmitting said plurality of measurements to said monitor terminal; and

means for generating visual displays of said plurality of measurements at said monitor terminal.

18. The apparatus of claim 17 further including:

means for generating at said remote terminal indications of the configuration status of said terminal;

means for transmitting said configuration status indications to said monitor terminal; and

means for displaying at said monitor terminal visual representatives of said configuration status indications.

19. The apparatus of claim 18 wherein said means for reconfiguring said remote terminal includes:

means for varying at least one of the group comprised of the gain, automatic gain, rescaling, bias, sampling rate, or channel selection corresponding to at least one of said measurements.

20. The apparatus of claim 19 further including:

means in said remote terminal for varying said sampling rate in functional dependence on available bandwidth for said plurality of measurements transmitted to said remote terminal.