Sensor validation and value replacement for continuous emissions monitoring

US8650009B2 · kind B2 · utility

Assignee

• Rockwell Automation Technologies, Inc. · US

Inventors

• William Butler Forbes · Austin, US
• Michael Eugene Sugars · Elgin, US
• Walter Edgar Hayes, IV · Carl Junction, US
• Eugene Boe · Austin, US
• Scott Lawrence Jost · Austin, US
• Richard Andrew Hovan · Leander, US
• Keith Alex Smith · Leander, US

Key dates

• Filing date: Aug 31, 2010
• Grant date: Feb 11, 2014
• Expiry date: Mar 22, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B17/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A continuous emissions model system is described that employs an emissions model that can determine emissions values from a plant for use in place of sensed emission data in the event of failure or lack of communication from a sensor. The emissions model itself receives inputs that may be based upon sensed data. Each emissions model input may be substituted with a modeled input. The modeled inputs, as well as the emissions model outputs maybe biased to render them more accurate. If any one of the emissions model inputs fails (e.g., becomes unavailable or is clearly erroneous), the corresponding modeled input may be utilized so long as the modeled input passes an acceptability test.