【摘要】 为将超声射频数据传输至计算机,在计算机平台下重建超声图像,设计了一个基于PCI总线的超声射频数据传输系统。系统选用PCI9054芯片桥接PCI总线和本地总线,由2片FIFO构成外部缓冲区,PCI总线申请、芯片间的逻辑控制采用CPLD实现,驱动程序用WinDriver驱动开发工具开发。当PCI总线以DMA方式传输超声射频数据时,传输速率高达80MB/s,超声射频数据能够无损、实时地传输至计算机。更多还原

【Abstract】 For the purpose of transferring ultrasound RF(radio frequency) data to computer and reconstructing ultrasound image in the platform of computer,a design of an ultrasound RF data transfer system according to the features of ultrasound RF data and PCI bus is proposed.In this system,PCI9054 is used to connect PCI bus and local bus,external buffer is made up of two pieces of FIFO,CPLD realizes PCI bus apply and logic control among chips,the driver is developed using the WinDriver driver development tool.The transmission rates up to 80 MB/s when PCI bus transfer ultrasound RF data in DMA mode,ultrasound RF data can be delivered to computer undestructively and timely.更多还原