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Blood pressure is an important human physiological parameters , the pumping function of the heart , heart rate , peripheral vascular resistance , aortic and large artery elasticity , the physical state of the systemic blood factors are reflected in the indicators of blood pressure , blood pressure detection in clinical very important significance . How noninvasive , economical way to obtain accurate and reliable blood pressure parameters are kept constantly explore the field of biomedical engineering . The papers from two aspects of hardware circuitry and software algorithms , the following improvements in blood pressure measuring device . 1, using the C8051F005 - based high-resolution analog-to-digital converter as a signal detection circuit, and the module for the blood pressure measuring apparatus of the core processor . Since it has integrated high-precision analog-to-digital converter and powerful simulation part , advanced on-chip digital peripherals , thereby allowing the system is powerful, simple structure, low -power , anti-interference ability . 2 , improve the hardware deflated protection circuit to protect human security , from hardware design . Software algorithms for pulse wave signal analysis , digital filtering algorithm pulse detection algorithm , blood pressure fitting algorithm to achieve blood pressure measurement algorithm design , clinical assessment , using mercury sphygmomanometer carried out an assessment of the program by the compare the algorithm 's interpretation of the systolic blood pressure , diastolic blood pressure values ??, and the interpretation of the results of the mercury sphygmomanometer sphygmomanometer standards sp10 experimental program and statistical criteria to verify the availability of clinical blood pressure measurement system of the design .
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