Rule set for root cause diagnostics
First Claim
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1. A method for generating a reduced rule set for identifying a root cause of an aberration in an industrial process for use in an industrial process field device, comprising:
- (a) obtaining a rule base comprising a plurality of rules for the industrial process, each rule comprising a condition of at least one process signal of the industrial process and a fault which corresponds to a condition of at least one process signal;
(b) identifying which process signals of the industrial process are available to the field device;
(c) selectively removing a rule from the plurality of rules of the rule base to produce the reduced rule set, wherein the step of selectively removing a rule is based upon the step of identifying which process signals of the industrial are available; and
(d) storing the reduced rule set in a memory of the field device;
(e) performing diagnostics in the field device based upon the reduced rule set and the identification process signals.
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Abstract
A reduced rule set for identifying a root cause of an aberration in an industrial process is generated from a complete rule base. The rule base includes plurality of rules for the industrial process, and each rule comprises a condition of at least one process signal of the industrial process and a fault which corresponds to the condition of at least one process signal. Available process signals are identified. Rules are selectively removed from the rule base to produce the reduced rule set.
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Citations
22 Claims
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1. A method for generating a reduced rule set for identifying a root cause of an aberration in an industrial process for use in an industrial process field device, comprising:
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(a) obtaining a rule base comprising a plurality of rules for the industrial process, each rule comprising a condition of at least one process signal of the industrial process and a fault which corresponds to a condition of at least one process signal; (b) identifying which process signals of the industrial process are available to the field device; (c) selectively removing a rule from the plurality of rules of the rule base to produce the reduced rule set, wherein the step of selectively removing a rule is based upon the step of identifying which process signals of the industrial are available; and (d) storing the reduced rule set in a memory of the field device; (e) performing diagnostics in the field device based upon the reduced rule set and the identification process signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for determining a reduced rule set for identifying a root cause of an aberration in an industrial process for use in an industrial process field device, comprising;
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means for obtaining a rule base comprising a plurality of rules for the industrial process, each rule comprising a condition of at least one process signal of the industrial process and a fault which corresponds to a condition of at least one process signal; means for identifying which process signals of the industrial process are available to the field device; means for selectively removing a rule from the plurality of rules of the rule base to produce the reduced rule set, wherein the step of selectively removing a rule is based upon the step of identifying which process signals of the industrial are available; and means for storing the reduced rule set in a memory of the field device; means for performing diagnostics in the field device based upon the reduced rule set and the identification process signals. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An industrial process diagnostic apparatus for identifying a root cause of an aberration in an industrial process, comprising:
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a rule base comprising a plurality of rules for the industrial process, each rule comprising a condition of at least one process signal of the industrial process and a fault which corresponds to a condition of at least one process signal; a processor configured to identify which process signals of the industrial process are available and responsively selectively remove a rule from the plurality of rules of the rule base to produce the reduced rule set, based upon the identified process signals. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification