Authors: M. Henry
Affilation: Oxford University, United Kingdom
Pages: 463 - 466
Keywords: sensors, MEMS
The rapid development of sensor and processing technologies is offering manyopportunities for embedding new functionality within sensing devices. Oneimportant area is the development of diagnostics. While the generation ofdiagnostic error codes is becoming common, these can be difficult tointegrate into a wider control system, and do not address the morefundamental issue of the quality of the underlying measurement.The SEVA (sensor validation) approach, which is now embedded in a BrtishStandard (BS-7986) proposes that each sensor assesses the quality of eachmeasurement value is generates, including the influence of any diagnosedfaults, in order to generate an on-line uncertainy value.This talk will give examples of sensors and techniques for validation,including its application to a micro-machined flow meter.