Design of Respiratory Impedance Data Acquisition System Based on Forced Oscillation Technique
Liu Hua-zhu · Journal of Dongguan University of Technology · 2013
This paper designs a new and noninvasive respiratory impedance monitoring based on forced oscillation technique,with data acquisition system taking STM32F103ZE as core control modules.Signal processing quality is crucial to the acquisition system,with pre-Σ processing realized by hardware LPF and reprocessing realized by digital software filter for eliminating signal noises.Median-Σ average algorithm has also been proposed in the paper.Effectiveness and veracity of filtering algorithm has been confirmed by experiments.