一种新型多普勒血流仪的研制  

Development of a new Doppler flowmetry

作　　者：尹立松[1] 吴水才[1] 刘忠英 

机构地区：[1]北京工业大学生命科学与生物工程学院,北京100124 [2]北京麦邦光电仪器有限公司,北京102600

出　　处：《北京生物医学工程》2013年第4期380-386,共7页Beijing Biomedical Engineering

基　　金：国家科技支撵项目(2012BAI19B00)资助

摘　　要：目的研制一种具有数据采集、存储、传输、显示及声音辅助诊断功能,可以面向社区和家庭应用的便携式多普勒血流仪。方法基于多普勒测量血流原理,以STM32微处理器为核心,采用定向型正交相位解调法获取多普勒频移信号,通过电源模块、数据采集模块、USB模块、按键模块、数据存储模块、音频处理模块、液晶显示模块、网络收发模块等外围电路,结合PC构成一个完整的血流检测系统。结果该血流仪能够实现对患者血流数据的采集、处理、存储、传输,可实时显示脉率、诊听血流声音及输出双向血流频移波形和血流速度波形,可用于糖尿病足的诊断。结论该血流仪使用方便,通过血流声音、血流速度波形、频移波形和脉率等反映血流特征的信息,进行糖尿病足等与血流相关慢性病的早期检测。Objective To develop a portable Doppler flowmetry with the functions of data acquisition,data storage,data transmission,voice,and display in community and family health care. Methods Based on the Doppler principle,and STM32 microprocessor as the core,the system acquires frequency offset with directional orthogonal phase demodulation method. The system consists of power supply module,data acquisition module,USB module,key module,data storage module,audio processing module,LCD module,network transceiver module and PC. Results The Doppler flowmetry can achieve the functions of collecting patient’s flow data,data processing,data storage,data transmission,voice,and display of the bi-directional wave of blood flow and pulse rate. The flowmetry can be used for the diagnosis of diabetic foot. Conclusions The Doppler flowmetry is easy to operate. Through the sound and wave which reflect the flow characteristics,the system can detect diabetic foot and other blood flow related chronic diseases.

关 键 词：STM32 多普勒 血流仪 糖尿病足 血流检测 

分 类 号：R318.6[医药卫生—生物医学工程]