| Cardiovascular disease (CVD) as one of the most dangerous disease threats to human’s life, so that there are millions of people killed each year in China. In 2012, survey data showed that about 230 million patients had got CVD in China, and the prevalence rate of CVD took up 20% in adults. There were about 200 million patients with hypertension, more than 70 million patients with stroke, and 50 million patients with pulmonary heart disease, 42 million patients with the heart failure, and 20 million patients with myocardial infarction. National annual number of deaths due to CVD was about 3.5 million, and the number of deaths caused by CVD was up to 9590 every day. By the end of 2013, China had about nearly 250 million people suffering from varying degrees of CVD, CVD killed up to 4.2 mil-lion people every year. Compared with other diseases, CVD causes the highest mortality. Research showed that only due to population aging and population growing, by 2030, the number of CVD will exceed 50% each year. Chinese patients with CVD will increase to 21.3 million by 2030 if there are no any corresponding measures.As the first large population country, China is faced with the problems of serious aging and uneven distribution of medical resources, the number of patients with CVD is on the rise and can not receive timely assistance, which seriously threat to human’s health. Therefore, under current severe situation, this paper designed a system to monitor the state of electro-cardiogram (ECG), pulse and blood pressure. The device was based on the Linux operating system, ARM9 microcontroller development platform, GPRS communication module and MATLAB analysis tool, in roder to realize a remote real-time monitoring of physiological parameters such as ECG and pluse. Beside, it aso achieved a blood pressure monitoring with sleeveless.This system was mainly made of two parts; physiological signal monitoring terminal and remote monitoring center. Physiological signal monitoring terminal mainly was used for collecting human ECG, pulse data, and sent them to the remote monitoring center through a wireless communication module. In additon, experimenters should simultaneously record the blood pressure value when collecting the data of ECG and pluse, so as to do subsequent data analysis. Remote monitoring center was responsible for processing and analysising data. Pulse transit time (PTT) was calculated repectively by PTTpeak and PTTstart methods to discuss the relationship between blood pressure and PTT. Finally, the PTT, heart rate and pulse rate were calculated and analyzed. Research results showed a linear relationship was between the blood pressure and PTT, and the influence of the PTT by the two methods was also analyzed. In this paper, the open-source Linux system is with feature of strong portabil-ity, good scalability, so it is selected as a developmemt platform to use. Additionally, it can be cut based on differrent requirements. Thus, it lays a strong foundation for further devel-opment and improvement. |
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