Design Of A New Human Body Multiphysiological Parameter Detector Based On Internet +

Aging,shortage of medical resources,surge in people with chronic diseases are both a problem for the country and the patients themselves.For the prevention of potential diseases of the body,the monitoring of physiological parameters such as blood pressure,blood oxygen and heart rate is undoubtedly the fastest and well-recognized health index.As people’s awareness of health gradually strengthens,they have higher requirements for health self-test instruments.Therefore,the multi-physiological parameter detector with wireless transmission function is more in line with the needs of future families and communities.In view of the above requirements,combined with the current market detection of fewer parameters and expensive by the health detector,this paper designed a costeffective,portable new human body physiological parameter detector.The device has the function of simultaneously detecting blood oxygen,electrocardiosignal,blood pressure,respiration,body temperature and other parameter indicators.at the same time.The wireless data transmission function can be realized in the place with wifi network,which lays a foundation for remote health diagnosis and automatic diagnosis.Therefore,this paper mainly does the following research:(1)Understand the research status of human physiological parameter detectors at home and abroad,determine the functional requirements and performance of the products,and propose the overall design of the system.(2)Study the mechanism and characteristics of different physiological signals,select appropriate acquisition sensors,and design corresponding peripheral circuits.STM32F407 is selected as the microprocessor of the system,and its peripheral circuit module is equipped to complete the functions of collecting,processing,calculating,liquid crystal display,data storage and data transmission of physiological signals.(3)Filtering the interference existing in the original pulse wave and ECG signal by wavelet transform analysis.Design a feature point extraction algorithm for pulse wave,ECG signal and respiratory signals.Establish a mathematical model between blood pressure and pulse transit time(PTT).Complete the control program for each part of the system.(4)Test the system,including the functional test of the system and the accuracy of the physiological parameter detection value.