Wireless Physiological Signal Monitoring Instrument Based On ARM

Physiological monitor can provide significant parameters evidence for clinical diagnosis. With the rapid development of information technology, life science and technology and embedded development technology, the portable monitoring equipments are demanded increasingly in many areas outside hospital. But it is difficult to be extended greatly because of the high cost and large volume.According to the actual needs, a portable Electrocardiogram monitor is designed in this dissertation, aimed to sample Electrocardiogram signal and detect the movement of heat precisely and exactly. It could provide assistant analysis as well. The system picks up ECG signal by sensors and amplifies and adjusts it, and then the ECG signal is given to MSP430 for AD conversion. The data is sent to ARM board by Bluetooth and is analyzed by the ECG processing algorithms on the Mobile Smart phone which is simulated by ARM boardIn the terms of hardware, according to the features of ECG and previous physiological data acquisition circuit of ECG, ECG acquisition module is designed specifically to ensure the ECG signal of body surface can be detected perfectly in the thesis. AD is converted through the ADC12 module inside the MSP430 microcontroller. The ECG acquisition module, MSP430 MCU and the Bluetooth module are integrated into what is named ECG signal box. Converted data is communicated with ARM board via Bluetooth.In the terms of Software, the thesis introduces the system structure and performance characteristics, the system kernel and development tools for application of Windows CE embedded operating system; Windows CE kernel is customized in practical need and EVC++ 4.0 is used to develop drive for Bluetooth, the LCD control, USB drive and touch screen control and so on. By testing, the results showed this system can achieve the desired goals, such as data acquisition, AD converts, Bluetooth wireless communications and real-time display. ECG processing algorithm is transplanted in ARM to analyze the waveform and the function of alarm can be realized in time. It can achieve the expected results.Bluetooth technology is equipped in the monitor system, which is convenient for people. The application of Bluetooth technology in the medical field is still limited currently. However, the system testing indicates that the wireless test control by Bluetooth technology is feasible. In the future, it should have a good market prospect.