Remote Blood Pressure Monitoring System

As the improvment of people's living standard, people are far more concern about their health situation. Blood pressure is the most improtant target, which reflect the physiological status of human being. Normal blood pressure is the important factor that insures a healthy body. In addition, blood pressure is an important indicator of care for critical patients. Accuratlly and timely monitoring of blood pressure is extremely important for the understanding of his illness, diagnosis of disease and protection safety of critical patients. Therefore, the development of high-performance blood pressure monitoring system has important practical significance.Response to the above, this paper presents the solutions of remote blood pressure monitoring and control system, combining computer technology, measurement and control technology and network communication technology .so electronic blood pressure system become network. The system will collect and treat blood pressure information and display in the LCD, at the same time, the information with TCP / IP sent to the network, which is the purpose of this design.At the beginning, this paper describes the characteristics of physiological signals and their measurement conditions, detailes analysis of the principle of measuring blood pressure as well as identification of diastolic and systolic blood pressures. Papers focus on both hardware and software system design. In terms of hardware, It is easy in design of the hardware system, useing LM3S8962 controller (internal integrated A /Dconverters and Ethernet controller, etc.) with ARM Cortex-M3 processor core. The entire hardware system circuit is of six parts: the minimum system circuit of LM3S8962; the power supply module; the interface circuit of JTAG; the blood pressure detection module; the display module of liquid crystal; the network interface. Among them, the blood pressure detection module is a key and difficult part of throughout system design, which exchange to isolate AC and DC part of cuff pressure and give them to the A / D converter. On the software side, this part is the system software design of Chapter IV. First of all, the real-time operating systemμC/OS-Ⅱmigrate to the processors of LM3S8962, and then it explains the design of the application (by the three parts). They are A / D conversion program design, program design of liquid crystal display and the network communication program design. In the end, the paper done a brief introduction in the system hardware and software debugging as well as a brief summary of the full text.