Design And Implementation Of Physiological Signals Measurment System For Home Use

With the constantly improvement of quality of people’s life, people pay more and more attention to their own health. The limited resources of public health and the condition of uneven distribution promote the development of health testing equipment for family. On the one hand, it alleviates the problem of shortage of nation medical resources; on the other hand, it meets daily demand of people for detection of disease. For that reason, The issue launchs on the research of physiological signal detection system.This thsis mainly studied three aspects, they were the design of the signal acquisition circuit and the digital circuit, the design of embedded software and the discussion about the relationship between BCG and the amount of exercise. The thsis completed the following aspects of the research woek:(1)According to the characteristics of ECG signal and BCG signal and the function to be realized, the signal acquisition circuit and the digital circuit for collecting datas were designed. First, the circuit simulation was designed and debugged by the software called Multisim. Then, circuit board was designed through the software called Altuim Designer. Final, realizing the function of hardware circuit.(2)To realize the function of collecting, filtering process, storaging and displaying by writing program though the software called Keil uVision5.(3)The reliability of the BCG signal measured on the scale and on the scale were verified by experiments. On the basis of this, the relationship between the BCG signal and the amount of motion was discussed by experiments, and the motion signal in BCG measured in movement was extracted.The thsis finally completed a physiological signal acquisition system that could collecting ECG signal and BCG signal at the same time,which could be integrated to Electronic scale or dynamic bicycle to collecting signals.Then The reliability of the collected signals and the relationship between the BCG signal and the amount of motion were verified by experiments and the motion signal in BCG measured in movement was extracted.