Systems and methods for adaptive profiling, fault detection, and alert generation in a changing environment which is measurable by at least two different measures of state
US6073089A · kind A · utility
Inventors
Key dates
| Filing date | Oct 22, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Oct 22, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/327
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for detecting changes, and in particular faults, in a changing environment include constructing a profile of the environment using observations made during no fault conditions. A range of values for one or more "trusted" variables are identified as values indicative of a no fault condition. Data is also collected (only at times when the trusted variable(s) indicate(s) no fault) for other variables which may be indicative of a fault condition. Statistical profiles are established for each of these other variables. The environment is continuously monitored and the normal profile, as well as the thresholds/ranges, are preferably continuously updated during normal conditions, as indicated by the trusted variable(s). When, during monitoring of the environment, the trusted variable(s) exhibit value(s) outside the normal range, a possible fault condition is indicated and the present values of the other variables are examined to determine whether or not any of these variables exhibit values outside the normal profiled thresholds/ranges. Depending on which of these variables exhibits an abnormal value, a diagnosis of the fault may be possible. A method for determining th…
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