Portable Ambulance Blood Pressure Monitoring System Based On Hand-held Personal Computer

Since lots of factors such as pumping blood ability of heart, heart rate, vascular resistance, flexibility of main artery and big artery, body blood capability and hemal physical state can be reflected by blood pressure, it is of great importance to be one physiological parameter for body cycle system enginery. It is significant for clinic medicine, particularly for wardship of dangerous patients and anaesthetised completely patients. Thus, it is necessary to develop the noninvasive ambulance blood pressure monitoring system.This paper brings forth a new monitoring model which is based on the hand-held personal computer(HPC)—— dynamic blood pressure monitoring model, and with the direction of this model the monitoring system is designed.With the analysis of various ways of noninvasive blood measure, oscillometric method was chose to measure the noninvasive blood pressure aimed at the requirement of the system. Upon the basis of mechanical model of blood pressure, arithmetic to identify valid blood pressure parameter in order to advance the accuracy of the measurement.The designing of extractive technology for original pulse signal can manage the low-pass filter,high-pass filter and the amplification by grade, filter interference and noise, and then provide support for the data obtaining of blood pressure. Deploying the new micro-power microprocessor as the controlling center simplifies and modularizes the circuit, measures and stores data independently as well as. For the purpose of the realization of portable monitor, the special power managing system is designed which can guarantee the long time running of the system. At the same time, For the purpose of the micromation, low-power surface mounting components and double deck printed circuit board are employed.In Win CE, Hand-held personal compute(HPC) communicates with fore signal detecting unit by VBCE,which makes it realizable to control the blood pressure measurement, store the data, analyze the data and other functions.Finally, Clinic experiments and evaluation of the accuracy of the blood pressure measurement is processed for further research and application of dynamic blood pressure warding.