摘要
PCI总线是目前比较先进的PC机总线,已经取代了ISA总线,成为PC机总线的主流。基于PCI总线的超声多普勒血流测速系统,系统硬件为一块PCI插卡,卡上集成了获取多普勒信号的模拟电路和多普勒信号高速数据采集的数字电路,系统软件是用基于win2000的Vc++6.0开发的。由于本系统采用先进的PCI技术,因此可以对数字化的超声多普勒血流信号进行实时地时频分析,在大大降低信号噪声的同时,提取有用信息,有利于病变分析。
As a current mainstream PC bus,PCI bus is more advanced than ISA and has superceded the later.The system,which applies Doppler Ultrasound to the measurement of blood velocity,is designed with PCI hardware architecture.The system hardware is a PCI plug-in card,which is realized by integrating analog circuit for acquiring Doppler signal with high speed digital circuit for Doppler signal sampling.The system software is developed with VC++6.0under windows 2000operating system.Advanced PCI technology adopted,the system can give a real-time analysis both in time domain and in frequency domain of the Doppler ultrasound signal obtained from blood flow.Noise reduced effectively and useful information abstracted,the system benefits analyses of pathological changes.
出处
《医疗卫生装备》
CAS
2002年第6期10-12,共3页
Chinese Medical Equipment Journal
