Patent №
US 5,680,409
Granted
1997-10-21
Filed 1995
Owner
FISHER-ROSEMOUNT SYSTEMS, INC., A DELAWARE CORP.
Lab
—
AI components
1
planning
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
08514497
A method and apparatus is provided for detecting a faulty sensor within a process control system having a set of sensors, each of which produces an associated sensor output signal. The method and apparatus produce a set of sensor estimate signals from the sensor output signals using principal component analysis and then determine a validity index for each of the sensors as a ratio of two residuals, wherein each of the residuals represents a different measure of the difference between the sensor output signals and the sensor estimate signals. The determined validity indexes are then used to detect a failure of one of the sensors and/or to identify which one of the sensors has failed.
AI classification
Ownership
FISHER-ROSEMOUNT SYSTEMS, INC., A DELAWARE CORP.
assignment · 76600169
Assignors
QIN, S. JOE, DUNIA, RICARDO H., HAYES, RANDALL L.
On an employer assignment, the assignors are typically the inventors.