Measurement method of blood oxygen saturation for eliminating motion interference

A motion interference and measurement method technology, applied in the field of blood oxygen saturation measurement, can solve the problem of weak ability to eliminate periodic interference
CN101632588AInactive Publication Date: 2010-01-27FOURTH MILITARY MEDICAL UNIVERSITY
0 Cites 24 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FOURTH MILITARY MEDICAL UNIVERSITY
Publication Date
2010-01-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a measurement method of blood oxygen saturation for eliminating motion interference. Photo-plethysmography (PPG) is interfered under motion influence, which results in a great error generated in noninvasive measurement of blood oxygen saturation. The measurement method comprises the following steps: firstly taking the difference between two wavelength-standardized PPG signals as an ideal signal to create an adaptive filter, filtering the two wavelength PPG signals to weaken partial interference, respectively building a reference signal series according to 0-100% of the blood oxygen saturation, and computing the current arterial oxygen saturation with the correlation between FFT coefficients of a reference signal and an original signal as an identification method of the arterial oxygen saturation.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for measuring blood oxygen saturation, in particular to a method for measuring blood oxygen saturation that eliminates motion interference, and the method can realize the measurement of arterial blood oxygen saturation when a subject is in motion. Background technique

[0002] Because the PPG signal is susceptible to motion interference, the use of blood oxygen saturation measurement in portable and wearable measurement devices is limited.

[0003] At present, the commonly used methods include FFT method, motion acceleration method, three light source sensor method and various signal processing methods. For the measurement of saturation, it has been proved that these methods are limited to the elimination of motion interference.

[0004] The discrete saturation transformation algorithm (DST) proposed by Masimo is widely considered as an ideal anti-motion blood oxygen saturation measurement method because of its low fa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More