Design Of Communication For Smartphone-based Household Terminals Monitoring Human Physiological Parameters

The development of society and the quality of people’s life are seriously restricted by some unhealthy factors such as the acceleration of aging of population, the sharp increasing of the proportion of the sub-healthy group and the escalating rate of the prevalence of chronic diseases. People’s concern and appeal for health are growing continuously. The medical treatments for patients, however, are seriously affected by both the lack and un-even distribution of resources of traditional medical system and the lags of diagnoses offered by medical system. Mobile health system based on the Internet and smartphones has some advantages, alleviating those defects involved in traditional health system. Developing a mobile health system thus has a significant application value of engineering.This project concentrates on the construction of mobile health platform, with which people can enjoy cloud health service by connecting multiple domestic human physiological parameter-detecting instruments to smartphones, and send detected data to the Internet. The connections and communications between detecting instruments and smartphones are especially concerned in this study and communication solutions are proposed for bridging detecting instruments and mobiles. The architecture of communication protocols is simplified. The protocol framework on application layer and instances that can be applied to digital communication between various kinds of detecting instruments and smartphones are provided, and this protocol framework is completely implemented by two representative means, the Bluetooth and the mobile phone audio interface. As for the former, both traditional strategy and low power strategy of Bluetooth communication are implemented in order to apply to phones of different brands. For the latter, the audio interface is transformed into a more adaptable digital communication interface in consideration of theory, hardware, signal processing, link controls, encoding and decoding, algorithms and so on. In the end, the design of service-based software communication as well as normalized and standardized Bluetooth and audio interface communications between detecting instruments and smartphones are implemented by combining hardware and software on the Android platform. Test results indicate that the design studied in this project has excellent performance and can be potentially promoted into mobile health system.