The development of a wearable pulse oximeter sensor and study of the calibration method
Wu, X.; Cai, G.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 26(4): 731
2009
ISSN/ISBN: 1001-5515 PMID: 19813598 Document Number: 631157
The paper first analyses the principles of measurement of the two-wave oximeter and their limitations in technology. We propose to filter off motion interference from pulse oximeter signal using an algorithm based on the Beer-Lambert law that requires a three-wave probe (660 nm, 850 nm, and 940 nm). Based on the new algorithm, this paper describes the design principle of the circuitry and the software flowchart. Also, we study the calibration method of the pulse oximeter sensor and discuss the results in this paper.