發(fā)布時間：2018-06-05 16:43

  本文選題：動態(tài)血壓 + 心電(ECG)�。� 參考：《浙江大學》2015年碩士論文

【摘要】：據(jù)衛(wèi)生部門統(tǒng)計,我國每年由于高血壓及其并發(fā)癥而死亡的人數(shù)達到兩百可�，F(xiàn)如今使用最多的血壓測量儀器,主要是基于袖帶充放氣的單點測量法。無釉帶的連續(xù)血壓測量將成為血壓儀的發(fā)展趨勢。本文基于光電容積脈搏波描記法(Photoplethysmographic,PPG)的連續(xù)血壓監(jiān)測方法,不僅可以連續(xù)測量每搏血壓,而且更加方便舒適。本文基于stm32硬件平臺設計了一套動態(tài)血壓測量系統(tǒng),包含一路心電(electrocardiogram,ECG)信號和兩路脈搏波信號。依據(jù)脈搏波傳輸時間(Pulse Transmit Time,PTT)與血壓之間的線性關系,對血壓進行動態(tài)測量。在實驗中對比了一系列PTT特征點,選取出與血壓相關性最好的特征點。利用此特征點點到的PTT與24小時靜態(tài)血壓進行相關性對比。然后研究了PTT-血壓關系公式(?)普適性和隨時間的變化。最后提出了三種定標方案,通過示波法血壓儀進行定時校正,能準確的得出被測者的血壓,為24小時動態(tài)血壓監(jiān)護成為提供了一種行的方案。實驗得到下面結論：第一,利用雙路PPG特征點求得的PTT與血壓的相關性(?)于其他特征點。第二,同一個體的PTT與血壓關系曲線會隨著時間而緩慢改(?)、第三,PTT與靜態(tài)血壓的相關性沒有運動前后的PTT與血壓相關性好。第四,利用標準血壓定時校正,測量到的血壓準確性較高。
[Abstract]:According to health department statistics, the number of deaths due to hypertension and its complications reached 200 per year in China. The most commonly used blood pressure measurement instruments today are single-point measurements based on cuff-filling and exhalation. Continuous blood pressure measurement without enamel belt will become the development trend of blood pressure meter. In this paper, a continuous blood pressure monitoring method based on photovolumic pulse imaging (PPG) is presented. It can not only continuously measure the blood pressure per stroke, but also be more convenient and comfortable. In this paper, a dynamic blood pressure measurement system based on stm32 hardware platform is designed, which includes two pulse wave signals and one electrocardiogrammetric signal. According to the linear relationship between pulse Transmit time (PTT) and blood pressure, the blood pressure was measured dynamically. In the experiment, a series of PTT feature points were compared, and the best correlation with blood pressure was selected. Dot to point PTT using this feature was compared with 24-hour static blood pressure. Then the formula of PTT- blood pressure relationship was studied. Universality and changes over time. Finally, three kinds of calibration schemes are put forward, which can accurately get the blood pressure of the subjects through the timing correction of the oscillographic blood pressure meter, and provide a kind of scheme for 24-hour ambulatory blood pressure monitoring. The experimental results are as follows: first, the correlation between PTT and blood pressure is obtained by using the characteristic points of two-channel PPG. At other characteristic points. Second, the relationship curve between PTT and blood pressure of the same individual will change slowly with time, and the correlation between PTT and static blood pressure in the third case is not as good as that between PTT and blood pressure before and after exercise. Fourth, using the standard blood pressure timing correction, the accuracy of blood pressure measurement is higher.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TH776

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本文編號：1982703