| Autors: P, I. C., I, D. D. Title: Difference Between Measured and Real Value in Illuminance Estimation Keywords: Meters , Power measurement , Process control , Lighting Abstract: When calibration of measuring devices and in particular illuminance meters take place, statistical evidence for the reliability of the procedure must be considered. Calibration process stability should be examined, and control charts should be introduced. The current paper presents three sigma control charts, verifying that the calibration process is under control. They are based on the readings of a precise luxmeter taken in six consecutive years, owned by the Research and Development Laboratory for Lighting Technology in the Technical University of Sofia (R&D Lighting Laboratory). After verification that the calibration process is controlled, X bar R charts for different types of illuminance meters, calibrated within a period of five years are generated. The results obtained show the performance of the measured devices in terms of stability of the sample readings and presence of variations. References Issue
Copyright IEEExplore Full text of the publication |
Вид: постер/презентация в международен форум, публикация в реферирано издание, индексирана в Scopus
