Design and implementation of adaptive pulse oximetry(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第8期
- Page:
- 990-995
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- Design and implementation of adaptive pulse oximetry
- Author(s):
- ZHU Zifu1; 2; WEN Bin1; 2; WU Rou1; 2; YUAN Sinian1; 2; LI Ruowei1; 2; YE Jilun1; 2; 3; ZHANG Xu1; 2; 3
- 1. School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518000, China 2. Shenzhen Key Laboratory for Biomedical Engineering, Shenzhen 518000, China 3. Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen 518000, China
- Keywords:
- Keywords: adaptive pulse wave signal hypoperfusion index blood oxygen saturation
- PACS:
- R318.6
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.08.014
- Abstract:
- Abstract: An adaptive pulse oximetry is introduced in the study. The system uses an analog switch to change the resistance of the feedback resistor for the coarse-tuning of system gain, and changes the DA output of MCU through controlling the feedback of the preamp?ircuitry to change constant current drive size, thus completing the fine-tuning of system gain. Under the coordination of two kinds of mechanisms, the proposed pulse oximetry has the abilities of controlling system gain precisely and measuring wide-range signals. Therefore, the pulse oximetry can realize the acquisition of weak pulse signals and the accurate calculations of pulse rate, perfusion index and blood oxygen saturation under hypoperfusion.
Last Update: 2021-07-31