人体呼吸CO2浓度监测模型及其实验验证

Translated title of the contribution: Human respiratory CO2 concentration monitoring model and its experimental verification

Zhurui Guo, Tao Xiong, Gang Zheng*, Shigeng Song, Shun Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
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Abstract

Aiming at the monitoring of the concentration of human respiratory CO2, this paper reasonably simplifies the human respiratory process from the perspective of physics. Based on the gas exchange in the lungs during respiratory process and the relationship between the lung gas volume and concentration, the human lung respiratory model was established. For End-Tidal Carbon Dioxide (ETCO2) monitoring, the difference between the sensor measurement and the actual situation in the lung was analyzed, and the CO2 sensor model was established. By building a mainstream non-dispersive infrared (NDIR) respiratory CO2 concentration monitoring system for confirmatory experiments, the system uses infrared LEDs and PbSe infrared detectors. The error between the actual measurement result of ETCO2 concentration and the theoretical model is less than 0.3%, and the feature matching degree is high, which verifies the applicability of the model. It can monitor the CO2 concentration of human breathing, and can reflect the capnography of the subject in real time.

Translated title of the contributionHuman respiratory CO2 concentration monitoring model and its experimental verification
Original languageChinese (Traditional)
Pages (from-to)439-445
Number of pages7
JournalChinese Journal of Sensors and Actuators
Volume34
Issue number4
DOIs
Publication statusPublished - Apr 2021

Keywords

  • capnography
  • ETCO monitoring
  • external breathing
  • NDIR sensor
  • respiratory model

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