Research On Anti-Noise Non-invasive Technology For Blood Pressure Measurement System

With the development of mobile health technology, the wearable physiological parameter monitoring device which is very important to the information access technology, is becoming a research focus. The Movement interference technology is very important to wearable device and it is a difficulty. The blood pressure is a very important physical parameter to body. To improve the accuracy of the measurement of blood pressure by the anti-noise technology and then promote the wearable blood pressure measurement technology has very significant application value. This article will discuss the movement interference technology in non-invasive blood pressure measurement. The work in this article is as follow:(1) Design the non-invasive blood pressure measurement system based on the MSP430FG4618 chip and integrate the MEMS accelerator LIS3DH. The system can collect the pulse wave signal and acceleration in real time.(2) Research the recent non-invasive blood pressure method and propose an improved method based on the Gauss fitting algorithm and difference ratio algorithm, which is embedded in the microprocessor to detect its accuracy.(3) Design the a new structure of integrating the cuff and device for the system. Research the self-adaptive filter and the algorithm related. In order to improve its anti movement interference ability, make the acceleration as the reference input of the filter so that it can reduce the interference from the movement in the pulse wave signal. The results of experiment show that the method and system proposed in this article can reduce the movement interference from the local motion of arm during blood pressure measurement. The method has common value to reducing the movement interference for the detection of other physical parameters...