A Study In Continues Non-invasive Blood Pressure Measurement Technology Based On DSP

Blood pressure which can represent the function of one's cardiocirculatory is one of the mostimportant physiological indexes of human body. Compared to oscillometric methods, continuousnon-invasive blood pressure detecting usually doesn't need cuff and can monitor blood pressure inreal time for a long period, even can measure the blood pressure of people under motivation.Without faults of traditional methods, continuous non-invasive blood pressure measurementtechnology has some advantages in clinical and some special situations.Continuous non-invasive blood pressure measurement is the trend of the development ofcontinuous blood pressure measurement. Mainly there are two kinds of common methods, they aretonometry and Pulse Wave Velocity. First of all, this thesis compares two kinds of detectiontechniques described above through analyzing, has chosen Pulse Wave Velocity as the mainresearch contents of the subject. Then, have carried on detailed analysis and research to thedomestic and international current situation of the development of the blood pressure detectiontechnique of the Pulse Wave Velocity, based on physiologic foundation of blood pressure on thisbasis, through carrying on the appropriate one approximate and simplifying to the mathematicsphysical model of blood pressure, obtain one taking the pulse wave and heart rate as mainparameter, we create a multi-parameter blood pressure measure models. Secondly, in this thesis weselect DSP system of TI Company as platform for our continuous non-invasive blood pressuremeasurement system, introduce characteristic, performance and technical parameter of DSPsystem, etc, briefly, has introduced the principle that oxygen of blood and heart electricity measureand realized, making one set based on TMS320F2812 system in detail has no design plan whichachieves the detection system of blood pressure. Finally, on the basis of experiment, mean endblood oxygen signal calculate the pace of unexpected turn of pulse through heart electric signal, create according to described above many parameter blood pressure measure model obtaincontinuous measurement of blood pressure finally; Analysis of experimental data prove this thesisresearch have, create continuous non-invasive blood pressure measurement technique according toblood pressure measurement standard requirement basically.On the basis of research described above, this thesis has also explored research to the pulsewave blood pressure detection technique of the short distance on the artery, through measure, mean end and radial artery wave pace of pulse of measure blood pressure, create continuous bloodpressure detection system miniaturized portable to take, develop and establish the good foundation.Meanwhile, this thesis also carried on research to the wireless communication of short distance forContinuous non-invasive blood pressure measurement, realize through nRF2401 to receive anddispatch, this also lay a good foundation for systematic blood pressure monitor.