Design Of Multi Parameter Physiological Acquisition System Based On Android Audio Communication

In modern society,the aging speed is gradually accelerated,sub-health and chronic population proportion also increased gradually,which restricts the realization of a harmonious society and improving the quality of people's lives;but the traditional medical resources has the defects of uneven distribution of urban and rural areas,such as mixed quality,far cannot meet the growing demand for it;therefore in order to realize the detection of temperature,oxygen saturation and pulse health parameters,this paper designs a multi parameter intelligent mobile phone Android health detection system based on audio communication.The design of the first power supply voltage stabilizing circuit design 3.7 V lithium battery,USB charging circuit and 3 V to achieve low power Msp430 MCU,then MCU temperature,oxygen saturation,pulse parameter acquisition;secondly the parameter data collected for data analysis to determine whether the numerical parameters in the normal range of detection parameters inside,if it is directly to the data with a special modulation and amplitude modulation mode according to the communication protocol encoding through mobile phone audio port to send the application of mobile phone,if not the first warning buzzer driver after the data is transmitted to the mobile phone terminal after modulation encoding;again,temperature,oxygen pulse physiological parameters sampling demodulation in mobile phone audio port according to the communication protocol of the decoded physiological parameters of the final value;display and storage finally complete physiological parameters in the application of mobile phone and the inquiry function,Detection of a variety of parameters.The test results show that the design data is fast,simple and practical.