Shadow function for protection monitoring systems
US11378934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Sep 8, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/326
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A diagnostic system is provided and includes a plurality of processors configured to receive data acquired by a sensor. A first processor can execute a safety function that determines a plurality of sensor measurement from the received data, compares selected sensor measurements to predetermined alarm set points, and determines a safety function output for the selected sensor measurements based upon the sensor measurement comparison. A second processor can determine a shadow function output corresponding to the safety function outputs during different respective portions a diagnostic interval. The shadow function output can be configured to replicate the safety function output under conditions where the safety function output is free from error. A third processor can be configured to validate the safety function output by comparing the safety function output to its corresponding shadow function output and outputting a condition based upon the validation comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.