Method for monitoring measured variables measured on a process plant with measuring instruments
US11788933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2021 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Nov 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B23/0235
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitoring method includes monitoring variables that change over time and are continuously measured during repeated executions of a dynamic process. The measurement data include training data in a training period and monitoring data measured subsequently to the training period. Vectors are continuously determined based on the measurement data, the vector components of which comprise respective rates of change of the measured values of the individual measured variables determined for a series of successive points in time on the basis of the measurement data, wherein the points in time of each series cover a time window of a duration and the time windows of successive vectors are shifted. The vectors are stored as a reference cluster. The vectors are compared with the reference cluster. An anomaly is determined when a vector is outside the reference cluster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.