Rule based diagnostic system with dynamic alteration capability
First Claim
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1. A method of diagnosing an operating system to malfunctions comprising the steps of:
- (A) storing a rule base pertinent to the particular operating system being diagnosed and being operable to reach one or more conclusions relative to the condition of said system and being comprised of a plurality of schema, each said schema being defined by a data structure having a plurality of slots in which particular attributes of the schema are stored; and
(B) changing the contents of any predetermined slot of any predetermined other schema upon the occurrence of a predetermined event.
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Abstract
Sensor based diagnostic apparatus for performing on-line realtime monitoring of an industrial or other operating system. The diagnostic apparatus has a rule network for propagation of belief leading to one or more possible malfunctions of equipment in the operating system. The propagation of belief is dynamically altered as a function of the operating conditions of the sensors themselves.
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Citations
11 Claims
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1. A method of diagnosing an operating system to malfunctions comprising the steps of:
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(A) storing a rule base pertinent to the particular operating system being diagnosed and being operable to reach one or more conclusions relative to the condition of said system and being comprised of a plurality of schema, each said schema being defined by a data structure having a plurality of slots in which particular attributes of the schema are stored; and (B) changing the contents of any predetermined slot of any predetermined other schema upon the occurrence of a predetermined event. - View Dependent Claims (2, 3, 4)
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5. A method of diagnosing an operating system subject to malfunctions, comprising the steps of:
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(A) providing a plurality of sensors throughout said operating system to obtain respective signals indicative of predetermined operating parameters of said system; (B) storing a rule base pertinent to the particular operating system being diagnosed; (C) providing said sensor signals as inputs to said rule base to propagate belief leading to at least one particular consequent malfunction of said operating system; (D) diagnosing by said rule base, possible malfunctions of said sensors themselves; and (E) modifying said propagation of belief as a function of any sensor malfunction.
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6. A method of diagnosing an operating system subject to malfunctions and having a plurality of sensors providing signals related to system parameters, comprising the steps of:
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(A) storing a rule base pertinent to the particular operating system being diagnosed; (B) providing said sensor signals as inputs to said rule base to diagnose malfunctions of said operating system, based upon said sensor signals said rule base being comprised of a plurality of schema, each said schema being defined by a data structure having a plurality of slots into which particular attributes of the schema are stored; and (C) changing the contents of at least one slot in a predetermined other schema upon the occurrence of a predetermined condition of at least one sensor of said plurality. - View Dependent Claims (7, 8, 9)
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10. A method of on-line diagnosing of an operating system comprising the steps of:
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(A) connecting a plurality of sensors to said system to obtain sensor signals relating to predetermined parameters of said system, while said system is in operation; (B) providing indications relating to the overall operating condition of said system, based upon said sensor signals; (C) monitoring the operating condition of said sensors themselves; (D) modifying the value of a sensor'"'"'s input contribution to said diagnosis if the particular sensor itself is in an abnormal operating condition. - View Dependent Claims (11)
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Specification