Expert overseer for mass spectrometer system

• US 5,025,391 A
• Filed: 04/04/1989
• Issued: 06/18/1991
• Est. Priority Date: 04/04/1989
• Status: Expired due to Fees

• Current Assignee: United States Department of Energy
• Original Assignee: United States Department of Energy
• Inventors: Filby, Evan E., Rankin, Richard A.
• Primary Examiner(s): MacDonald, Allen R.
• Application Number:
  US07/333,075
• Time in Patent Office: 805 Days
• Field of Search: 364/513, 364/579
• US Class Current: 706/45
• CPC Class Codes: G06N 5/02 Knowledge representation; Symbolic representation
• CPC Class Codes: Y10S 706/903 Control
• CPC Class Codes: Y10S 706/928 Earth science

Abstract

An expert overseer for the operation and real-time management of a mass spectrometer and associated laboratory equipment. The overseer is a computer-based expert diagnostic system implemented on a computer separate from the dedicated computer used to control the mass spectrometer and produce the analysis results. An interface links the overseer to components of the mass spectrometer, components of the laboratory support system, and the dedicated control computer. Periodically, the overseer polls these devices and as well as itself. These data are fed into an expert portion of the system for real-time evaluation. A knowledge base used for the evaluation includes both heuristic rules and precise operation parameters. The overseer also compares current readings to a long-term database to detect any developing trends using a combination of statistical and heuristic rules to evaluate the results. The overseer has the capability to alert lab personnel whenever questionable readings or trends are observed and provide a background review of the problem and suggest root causes and potential solutions, or appropriate additional tests that could be performed. The overseer can change the sequence or frequency of the polling to respond to an observation in the current data.

Claims

1. An expert overseer system for the operation and real-time evaluation of a complex instrument system that includes key instrument components,

a computer means capable of controlling the key instrument components and producing results from the complex instrument system, and

a laboratory support system,

said expert overseer system comprising:

an interface coupling the key instrument components of the complex instrument system, the laboratory support system, and the computer means,

a master overseer system comprising the computer means and a master overseer program implemented on the computer means,

said master overseer system including a means for polling and collecting data from the key components of the complex instrument system, and the laboratory support system comprising automatically and manually specified time sequencing of said means for polling and collecting data,

a knowledge base including data obtained from said means for polling and collecting data,

heuristic rules and parametric rules responsive to the data obtained from said means for polling and collecting data, and set parameters,

an expert means responsive to said means for polling and collecting data and said knowledge base, said expert means capable of using a rule base and an inference engine to automatically analyze the status of the complex instrument system, to employ a set parameter damage prevention system, and to potentially alter a specified sampling routine,

an interrupt handling means responsive to the key instrument components of the complex instrument system and the laboratory support system, said interrupt handling means capable of initiating varying degrees of data collection by said means for polling and collecting data, and

a user interface responsive to said expert means, said user interface capable of relating the output of said expert means to a human operator.

2. The expert overseer system of claim 1 in which said means for polling and collecting data is variable in frequency or sequence based upon inferences drawn by said expert means.

3. The expert overseer system of claim 2 in which said expert means is capable of initiating the shut down of the complex instrument system.

4. The expert overseer system of claim 3 in which said heuristic rules are flexible and time-related.

5. The expert overseer system of claim 4 in which said master overseer includes a common variable space for the exchange of data by said means for polling and collecting data, said expert means, said interrupt handling means, said user interface, and said knowledge base.

6. The expert overseer of claim 5 in which said expert means in self-diagnostic.

7. The expert overseer system of claim 6 in which the computer means includes a means for data storage and said master overseer program implemented on said computer means includes data handling means capable of sending data from said common variable space to said means for data storage and retrieving data from said means for data storage to said common variable space.

8. The expert system of claim 7 in which the computer means is multi-tasking and includes

a first tasking environment in which the computer means controls the complex instrument system, and

a second tasking environment in which the computer means implements said master overseer program.

9. The expert system of claim 8 in which the complex instrument system is a mass spectrometer system.

10. The expert overseer system of claim 1 in which said expert overseer system can employ data from said means for polling and collecting data and analysis from said rule base and said inference engine to determine if a significant condition is present and to use this information to modify said expert overseer system and to inform a user.

11. The expert overseer system of claim 1 in which said user interface allows a user to ask for further information from said expert overseer system and to provide instructions to said expert overseer system.

12. An expert overseer system for the operation and real-time evaluation of a mass spectrometer system that includes

a mass spectrometer having key instrument components,

first computer means capable of controlling the mass spectrometer, and

a laboratory support system,

said expert overseer system comprising;

a second computer means

an interface coupling the second computer means to the key components of the mass spectrometer, the laboratory supports system, and the first computer means,

a master overseer system comprising the second computer means and a master overseer program implemented on said second computer means, said master overseer system including

a means for polling and collecting data from the key components of the mass spectrometer and the laboratory support system comprising automatically and manually specified time sequencing of said means for polling and collecting data,

a knowledge base including data obtained from the means for polling and collecting data,

heuristic rules and parametric rules responsive to based upon the data obtained from the means for polling and collecting data, and

set parameters,

an expert means responsive to said means for polling and collecting data and said knowledge base, said expert means capable of using a rule base and an inference engine to automatically analyze the status of the complex instrument system, to employ a set parameter damage prevention system, and to alter a specified sample analysis,

an interrupt handling means responsive to the key instrument components of the mass spectrometer and the laboratory support system, said interrupt handling means capable of initiating varying degrees of data collection by said means for polling and collecting data, and

a user interface responsive to said expert means, said user interface capable of relating the output of said expert means to a human operator.

13. The expert overseer system of claim 12 in which said means for polling and collecting data is variable in frequency or sequence based upon the inference drawn by said expert means.

14. The expert overseer system of claim 13 in which said expert means is capable of initiating a shut down of the mass spectrometer system.

15. The expert overseer system of claim 14 in which said heuristic rules are flexible and time-related.

16. The expert overseer system of claim 15 in which said master overseer system includes a common variable space for the exchange of data by said means for polling and collecting data, said expert means, said interrupt handling means, said user interface, and said knowledge base.

17. The expert overseer of claim 16 in which said expert means is self-diagnostic.

18. The expert overseer system of claim 17 in which said second computer means includes a means for data storage and said master overseer program implemented on the second computer means includes a data handling means capable of sending data from said common variable space to said means for data storage and retrieving data from said means for data storage to said common variable space.

19. The expert overseer system of claim 12 in which said expert overseer system can employ data from said means for polling and collecting data and analysis from said rule base and said inference engine to determine if a significant condition is present and to use this information to modify said expert overseer system and to inform a user.

20. The expert overseer system of claim 12 in which said user interface allows a user to ask for further information from said expert overseer system and to provide instructions to said expert overseer system.

21. An expert overseer system for the operation and real-time evaluation of a complex instrument system that includes

key instrument components

a first computer means capable of controlling the key instrument components and producing analysis results from the complex instrument system, and

a laboratory support system,

said expert overseer system comprising:

a second computer means,

an interface coupling said second computer means to the key instrument components, the laboratory support system, and the first computer means,

a master overseer system comprising the second computer means and a master overseer program implemented in said second computer means, said master overseer system including

a means for polling and collecting data from the key components of the complex instrument system, and the laboratory support system comprising automatically and manually specified time sequencing of said means for polling and collecting data,

a knowledge base including

data obtained from said means for polling and collecting data

heuristic rules and parametric rules responsive to the data obtained from said means for polling and collecting data, and set parameters,

an expert means responsive to said means for polling and said knowledge base, said expert means capable of using a rule base and an inference engine to automatically analyze the status of the complex instrument system, to employ a set parameter damage prevention system, and to potentially alter a specified sample routine,

an interrupt handling means responsive to the key instrument components of the complex instrument system and the laboratory support system, said interrupt handling means capable of initiating varying degrees of data collection by said means for polling and collecting data, and

a user interface responsive to said expert means, said user interface capable of relating the output of said expert means to a human operator.

22. The expert overseer system of claim 21 in which said expert overseer system can employ data from said means for polling and collecting data and analysis from said rule base and said inference engine to determine if a significant condition is present and to use this information to modify said expert overseer system and to inform a user.

23. The expert overseer system of claim 21 in which said user interface allows a user to ask for further information from said expert overseer system and to provide instructions to said expert overseer system.