Design Of Portable Physiological Signal Acquisition System Based On Android System

With the enhancement of health consciousness,people are more concerned about their health condition.What’s more,the ageing of the social population has also made medical and health care more stressful,so the household portable medical monitoring equipments have come into being.Early medical monitoring equipments are very expensive and inconvenient to carry,and what’s more,they can not be timely to feedback physiological information to the medical staffs to make timely analysis and diagnosis.Therefore,it is of great significance to design a portable,reliable and practical medical monitoring equipment.The collection of physiological signals is important for monitoring human health.ECG and blood oxygen are the physiological parameters that can better measure the health condition of human beings.With the popularization of mobile communications and the development of network technology,the mobile terminal with intelligent operating system is becoming more and more important.Therefore,this paper presents a design of physiological signal acquisition system based on STM32 microcontroller as well as the storage and display of physiological signals based on Android system to realize the real-time monitoring of ECG and blood oxygen.More details are present as follows:First of all,the hardware of the system includes power circuit,microcontroller module circuit,signal acquisition circuit,signal conditioning circuit and OLED display circuit.The hardware part is mainly used to collect and process signals.Secondly,the coding of the STM32 platform mainly includes the initialization of the system module,the configuration of GPIO port,the realization of the function of the wireless transmission the filtering algorithm and the analog-to-digital conversion.Finally,this paper makes detailed description on the user definition,data communication,network communication protocol,the signal waveform and signal storage about Android intelligent system.