一种便携式超声骨密度仪软件设计

Software Design for a Portable Ultrasound Bone Densitometer

为了提高超声骨密度仪性能,基于Visual C++2008 MFC实现上位机软件,实现测量结果稳定性和测量速度的改进,同时提高了超声声速(SOS)的测量精度。上位机软件包括界面设计、采集控制、数据处理与参数提取、数据存储以及报告打印等。设计了优良的人机交互(HCI)接口,操作便捷,可以实时观察波形。通过高效自动增益控制和有效数字滤波提高采集精度和稳定性。采用高速USB接口通信,向采集端发送控制指令,同时进行数据传输,有效缩短了测量时间。通过多通道统计平均测出超声声速和宽带超声衰减(BUA),结果稳定可靠。采用XML文档存储患者信息,检索方便。患者测量报告可实时打印。软件分层实现,便于维护与扩展。

In order to meet the requirements of ultrasound bone density measurement, we designed a software based on Visual Studio C＋＋ 2008. The software includes interface design, acquisition and control, data processing and parameter extraction, data storage and printing. Excellent human-computer interface （HCI） will give users a conven- ient experience. Auto gain control （AGC） and digital filter can improve the precision effectively. In addition, we can observe waveform clearly in real time. By using USB communication, we can send control commands to the acquisi- tion and get data effectively, which can shorten the measuring time. Then we calculated the speed of sound （SOS） and broadband ultrasound attenuation （BUA）. Patients ~ information can be accessed by using XML document. Finally, the software offers printin~ function