Diagnostic device, diagnostic method, and program
US11209811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2017 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/23447
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A diagnostic device includes a storage unit that stores first information including a first abnormal event which occurred in the past in a plant, a first attribution event that is a cause of the first abnormal event, and a first occurrence probability of the first attribution event, in which a causal relationship between the first abnormal and attribution events is indicated by a tree structure, and second information including a second abnormal event which is supposed to occur in the plant but has not yet occurred, a second attribution event that is a cause of the second abnormal event, and a second occurrence probability of the second attribution event, in which a causal relationship between the second abnormal and attribution events is indicated by a tree structure; and an estimation unit that estimates the cause of the sign of the abnormality, based on the first and second information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.