Design Of Physiological Parameters Acquainting System Based On Bluetooth Technique

The body temperature, blood pressure, pulse and oxygen saturation are the most important and basic vital signs for human, at the same time they are the most important physiological parameters for medical monitoring. Monitoring these four parameters will be very helpful for medical workers in improving the treatments for critically-ill patients. It is widely used in clinical monitoring, wilderness first aid, first aid for the family, and so on.At present medical workers acquire the physiological data mostly depend on mercurial floor stand model sphygmomanometer, pulse oximeter, and mercurial thermometer in the general ward. Nurses must manual keyin the obtaining data to the hospital information system (Hospital Information System HIS). Those clinical monitor apparatus are not suit to collect the routine physiological data because of large volumes, connecting wires and high cost. At the same time, the mercury pollution caused by mercury thermometers and mercury sphygmomanometer mercury in the wards are taken more seriously. However, it is possible for technical innovation induced by booming electronic information industry to solve the problem. Tightcoupling to application objects closely, the emerging embedded system development of advanced computer technology shows it's efficiency in designing of hardware and software resources and in the same conditions achieves greater system performance. It's very suitable for cost, performance, size, power consumption, in the strict requirements of occasions.This paper introduces a Bluetooth-based portable physiological data acquisition system and the designs to achieve Bluetooth thermometer, Bluetooth Oximeter and Bluetooth sphygmomanometer from system design, implementation processes, hardware and software construction. The IAR Embedded Workbench development system is employed to designe combined digital and anloge system to achieve physiological data acquisition and processing on the MSP430 MCU. The stream interface driver of Windows Mobile 6.0 operating system is used to achieve a physiological data acquisition, storage, display, analysis, back-end function. We designed specific implementation process of the corresponding upper application, produced hardware circuits, create shell molds and finally achieve the success of physiological signal acquisition system. Specific analysis and the corresponding solutions are used to deal with the turning out problems. The system is mainly equiped in hospital wards to acquisiten daily physiological data. It can also be transplanted to apply in home health cares.The work we have finished and the problems still unsolved are analyzed and summarized in the end of the paper. Also the prospect of future work and research directions of this project is dicussed in this part.