Two-wire thermocouples: A nonlinear state estimation approach to temperature reconstruction.

Paul O'Reilly, Robert Kee, Robert Fleck, P. McEntee

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


The problem of measuring high frequency variations in temperature is described, and the need for some form of reconstruction introduced. One method of reconstructing temperature measurements is to use the signals from two thermocouples of differing diameter. Two existing methods for processing such measurements and reconstructing the higher frequency components are described. These are compared to a novel reconstruction algorithm based on a nonlinear extended Kalman filter. The performance of this filter is found to compare favorably, in a number of ways, with the existing techniques, and it is suggested that such a technique would be viable for the online reconstruction of temperatures in real time.
Original languageEnglish
Pages (from-to)3449-3457
Number of pages9
JournalReview of Scientific Instruments
Issue number8
Publication statusPublished - Aug 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

Fingerprint Dive into the research topics of 'Two-wire thermocouples: A nonlinear state estimation approach to temperature reconstruction.'. Together they form a unique fingerprint.

Cite this