Design Of Portable Multi-Physiological Parameter Monitoring System

With the development of science and technology,people’s standard of living has improved continuously.With the growing of personal health awareness,the medical care demand of family and personal have become more and more intense.The accelerated aging process of China has put forward the severe test to the ability of national medical service level,but also provides a broad market for Chinese medical electronics industry.At present,the pressure of social competition in our country is getting bigger,and the pace of life is accelerating,which affect people’s lifestyles.The bad living habits,such as working overtime,staying up late,lack of exercise,eating unhealthy habits and other bad habits,has increasingly threaten to the health of everyone.Accordingly,it has a great significance and vast market prospects to design a physiological parameter monitoring system.Which can make people know their physical condition accurately to adjust lifestyle and enhance the quality of life.First of all,this thesis briefly describes the physiological significance of physiological and the principle of detection of multiple physiological signal parameters.Then,according to the characteristics of physiological signals,the hardware detection circuit of pulse blood oxygen saturation,non invasive blood pressure and ECG circuit are designed.The circuits efficiently implement the physiological signal amplification,noise filtering and signal extraction,and meet the functional requirements of this system.Secondly,in the process of physiological signal data,we use the fixed pulse string accumulation timing method to process the date of pulse blood oxygen,the normalized ratio method to calculate the systolic pressure and diastolic pressure,the median filtering method to filter the baseline drift of ECG signal,and the differential threshold method and local transform method for the extraction of R wave and QRS wave group.Through the analysis of physiological signal data processing,we implement the portable multi-physiological parameter monitoring system.Finally,this thesis testes the physiological parameters detection system by comparing it with relevant professional physiological parameter monitoring device to verify the accuracy and reliability of the measurement system,and meet the design criteria of the physiological parameter monitoring system.The monitoring system can monitor the user’s pulse oximetry,blood pressure,ECG and other physiological parameters in real time.Besides,the whole system has the characteristics of low power consumption,multi-function and small volume.It can meet the demand of family and personal for daily physiological parameters monitoring.