基于普通USB采集卡的血管壁动态信息远程测控系统

Vascular wall dynamic information distance measurement and control system based on general usb acquisition card

系统选用非NI公司生产的通用USB数据采集卡,应用虚拟仪器开发平台LabVIEW构建了血管壁动态信息远程测控系统。在Win-dows操作系统的VC++开发平台下,根据USB系统规范,采用Windows操作系统I/0设备驱动原理与动态链接库技术相结合的方法,将普通采集卡驱动程序的内核函数封装成动态链接库(DLL)。介绍了通过LabVIEW的网络通信功能把采集到主机的数据进行远程传输的方法。

Based on the software LabVIEW of virtual instrument and non - NI general usb acquisition card , the distance system of measurement and control about vascular wall dynamic information is designed in the paper. In the VC ＋ ＋ development envioromcnt in the windows operating system, drive core functions of general acquisition card are packaged dynamic link library（DLL）, according to the USB specification, using the method of the principle of Windows operating system I/O equipment drive and the dynamic link storehouse technology. By calling dynamic link library in LabVIEW, dynamic information of vascular wall is detected. This thesis intreduces the method that datas, which are collected to host, are transmitted by the functions of network communication in LabVIEW.