X射线相衬成像图像采集系统的远程控制传输设计

X-ray phase contrast imaging image acquisition system remote control transmission design

为了满足X射线相衬成像技术对图像采集装置的大面积和高分辨率的特殊要求,提出了一种基于ARM9和FPGA的远程图像采集控制传输系统的设计方法。系统由LUPA4000CMOS图像传感器、ARM9、DM9000A、FPGA、DDR2 SDRAM等器件组成。采用FPGA和DDR2技术,可以对大数据量的图像数据进行实时缓存,解决了高分辨率、大数据量图像数据实时存储和获取的关键问题。采用以太网远程控制传输的方法,能有效避免X射线辐射。实验结果表明,该系统可以实时准确地获取大面积、高精度图像数据。

To meet the X-ray phase contrast imaging technique for image acquisition devices,a large area and high-resolution special requirements,a remote image capture control of transmission system design method based on ARM9 and FPGA is presented.System is consisted of LUPA4000CMOS image sensors,ARM9,DM9000A,FPGA,DDR2 SDRAM and other devices.Using the FPGA and DDR2 technology,large amounts of image data can be cached in time,the key problem of large high-resolution,amounts of image data storaged and accessed in real-time is resolved.Using Ethernet remote control and transmission,the X-ray radiation can be avoided effectively.Experiments showed that this system can accurately obtain large-scale,high-precision image data in real-time.