A Single-Sensor Multi-Sign Detection Algorithm Based on PPG
In order to meet the needs of individuals who want to use multifunctional and portable medical electronic equipment at home,an algorithm is proposed for the measurements of multiple signs based on single MAX30102 sensor.Regression analysis of MAX30102 temperature signal eliminates the error between body surface temperature and core temperature.The PPG signal of MAX30102 is pro-cessed by eight-point moving average filter and FFT algorithm.The R eigenvalue method is used to calculate the AC and DC components of the PPG signal to obtain the blood oxygen saturation value.The PPG signal of the single channel MAX30102 is used to obtain the PTT and regression analysis of the PTT is performed to get the BP value.The experimental results show that finally four different signs can be measured on one MAX30102 and the accuracy of each sign parameter measurement is within the allowable range compared with the standard device.
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