Calibration Transfer Procedures Based on Sensor Models
2008 (English)Article in journal (Refereed) Submitted
This article treats the matter of calibration transfer, i.e. how to mathematicallysuppress sensor-to-sensor differences. We propose an approach in which the strategyis to find a model that compactly describes the behavior of a sensor type. Theparameters of the model serve as ‘data sheets’ and can be used to differentiate characteristicsbetween individual sensor devices. We illustrate that by keeping recordof these parameters it does not only becomes possible to characterize individualsensors, but also to calibrate their responses.
As will be discussed, the main virtue of the suggested approach comes by itscompact and device specific description of the sensor response pattern. This opensup for the construction of flexible calibration transfer schemes. The idea is to let asensor manufacturer construct and distribute ‘data sheets’ describing the characteristicsof each sensor component. Customers can then to use these to mathematicallycounteract for sensor-to-sensor differences. The counteraction can be made at sensorlevel, prior to the signals enter any host system. This is important if a customerwishes to avoid extensive adaptations being made to a product as soon as a slightlydifferent sensor component must be used.
The approach is tested on real experimental data made with Metal-Insulator-Silicon-Carbide-Transistors. Data driven modeling techniques were used to approximatethe sensor responses. The results of this paper positively demonstrate thatthe suggested approach can be used to counteract for sensor-to-sensor differences.
Place, publisher, year, edition, pages
Calibration transfer, pattern recognition, sensor model, chemical sensors, MISiCFET, commercialization
National CategoryChemical Engineering
IdentifiersURN: urn:nbn:se:liu:diva-14867OAI: oai:DiVA.org:liu-14867DiVA: diva2:25400