基于血流多普勒原理的血压测量系统设计  

The Blood Pressure Measure System Based on Supersonic Doppler Technology

作　　者：李杨[1] 董守华[1] 

机构地区：[1]中国矿业大学资源学院,江苏徐州221008

出　　处：《现代生物医学进展》2007年第7期1089-1090,共2页Progress in Modern Biomedicine

摘　　要：血流信号的采集可基于超声多普勒技术。利用多普勒超声探头在肢体主动脉脉搏处采集到血流多普勒频移信号,对信号电压进行放大,一方面直接输入扬声器转变为音频信号,得到多普勒音;同时用频率/电压变换器LM331变换多普勒频移信号,得到脉搏波信号。基于此原理,设计了使用无创、直观的方法获得肢体血流参数,并经PC机处理,最终在显示器上显示脉搏波形和血压数值的方法。The collection of blood signal can be based on the supersonic Doppler technology. Doppler blood frequency signal can be collected at the limb artery via the ultrasonic Doppler probe, and the power of the signal voltage can be amplified. Then the signal can be inputted to the loudhailer, so we can get the Doppler tone. At the same time, it should be turned into voltage signal by the F/V convertor LM331, thus we can get the signal of pulse wave. This intuitionisfic method with no wound is designed on the base of this theory and the indexes of blood stream can be showed on the display after handled by the PC machine.

关 键 词：血流多普勒信号 频压转换 模数转换 半字节模式 标准并行端口 

分 类 号：R319[医药卫生—基础医学]