基于示波法的无创血压监护仪的设计

阐述了用示波法测量血压的方法，介绍了用C8051单片机和彩色液晶显示器为核心的无创血压监护仪的硬件和软件系统．给出了系统流程图，程序采用ASM51汇编语言编写．在示波法的基础上，引入了采用模糊控制的方法自动修正特征系数，使其适合不同情况的监护对象，提高了测量精度．该监护仪实时显示所采集的血压及趋势图，可存储显示48h内血压数据，使用方便灵活，具有自动校正错误的功能，具有较高的临床应用价值．

Development of a Oscillometric Noninvasion Dynamic Blood Pressure Monitor

The paper discusses the oscillometric method to measure blood pressure, introduces both hardware and software systems of the Noninvasion Dynamic Blood Pressure Monitor with C8051 single chip microcomputer and color Liquid Crystal Display(LCD) as its core, and gives the flowcharts. The programs are written in the assemble language of ASM51. On the basis of oscillometric method, a fuzzy control method is introduced to revise automatically the characteristic coefficient for different situations, and improves the measurement precision. The monitor can display the blood pressure and its trend chart, also store and playback blood pressure data in 48 hours, and is convenient and efficient in use. It can correct the errors by itself and is of high clinic value.