Proactive on-line diagnostics in a manageable network
First Claim
1. A method for diagnosis of a system made up of a plurality of interlinked modules, comprising:
- receiving an alarm from the system indicative of a fault in one of the modules;
responsive to the alarm, constructing a causal network associating the fault with malfunctions in one or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probabilities of the malfunctions;
based on the alarm and the causal network, updating at least one of the probabilities of the malfunctions; and
proposing a diagnosis of the alarm responsive to the updated probabilities.
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Abstract
A method for diagnosis of a system made up of a plurality of interlinked modules includes receiving an alarm from the system indicative of a fault in one of the modules. Responsive to the alarm, a causal network is constructed associating the fault with malfunctions in one or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probabilities of the malfunctions. Based on the alarm and the causal network, at least one of the probabilities of the malfunctions is updated. A diagnosis of the alarm is proposed responsive to the updated probabilities.
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Citations
93 Claims
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1. A method for diagnosis of a system made up of a plurality of interlinked modules, comprising:
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receiving an alarm from the system indicative of a fault in one of the modules;
responsive to the alarm, constructing a causal network associating the fault with malfunctions in one or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probabilities of the malfunctions;
based on the alarm and the causal network, updating at least one of the probabilities of the malfunctions; and
proposing a diagnosis of the alarm responsive to the updated probabilities. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31)
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25. A method for diagnosis of a system made up of a plurality of interlinked modules, comprising:
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constructing a causal network associating a fault in one of the modules with malfunctions in two or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probability distributions of the malfunctions;
responsive to an alarm from the system indicative of the fault, updating the probability distributions of the malfunctions; and
proposing a diagnosis of the alarm responsive to the updated probabilities.
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- 32. Apparatus for diagnosis of a system made up of a plurality of interlinked modules, the apparatus comprising a diagnostic processor, which is coupled to receive an alarm from the system indicative of a fault in one of the modules and which is arranged, responsive to the alarm, to construct a causal network associating the fault with malfunctions in one or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probabilities of the malfunctions, and based on the alarm and the causal network, to update at least one of the probabilities of the malfunctions so as to propose a diagnosis of the alarm responsive to the updated probabilities.
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56. Apparatus for diagnosis of a system made up of a plurality of interlinked modules, the apparatus comprising a diagnostic processor, which is arranged to construct a causal network associating a fault in one of the modules with malfunctions in two or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probability distributions of the malfunctions, and responsive to an alarm from the system indicative of the fault, to update the probability distributions of the malfunctions so as to propose a diagnosis of the alarm responsive to the updated probabilities.
- 63. A computer software product for diagnosis of a system made up of a plurality of interlinked modules, the product comprising a computer-readable medium in which program instructions are stored, which instructions, when read by a computer, cause the computer to receive an alarm from the system indicative of a fault in one of the modules and, responsive to the alarm, to construct a causal network associating the fault with malfunctions in one or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probabilities of the malfunctions, and based on the alarm and the causal network, to update at least one of the probabilities of the malfunctions so as to propose a diagnosis of the alarm responsive to the updated probabilities.
- 87. A product for diagnosis of a system made up of a plurality of interlinked modules, the product comprising a computer-readable medium in which program instructions are stored, which instructions, when read by a computer, cause the computer to construct a causal network associating a fault in one of the modules with malfunctions in two or more of the modules that may have led to the fault and relating a conditional probability of the fault to respective probability distributions of the malfunctions, and responsive to an alarm from the system indicative of the fault, to update the probability distributions of the malfunctions so as to propose a diagnosis of the alarm responsive to the updated probabilities.
Specification