Android Bluetooth multi-source signal acquisition for multi-parameter health monitoring devices

In this paper, a portable physical health monitoring system is proposed based on the Android smart phone system. This system can be applied to monitor human multi physiological and biochemical parameters in real time, including the ECG, blood pressure, body temperature, heart rate, SPO2, blood sugar, and etc. The Android smart phone receives the parameters via Bluetooth communication from each health sensor module, and display the monitoring data simultaneously. It also delivers the related data to web server, which makes the health diagnosis and analysis on these data and feedbacks important information to the users. In order to solve the problem of the common Bluetooth module only providing the one to one communication, the multi-thread and the link reuse techniques are applied to realize the wireless data transmission from multi-sources to the smart phone. The experimental results show that this network works effectively, and the smart phone can interact with up to 7 Bluetooth sensor modules simultaneously.