【摘要】 分析了重离子治癌专用加速器对部分同步数据和过程数据的传输要求,提出并实现了一种高速率、可纠错、远距离的实时数据传输系统,以提高加速器同步和控制的效率和可靠性。系统优化了传统系统的硬件配置和布局。采用PXI、FPGA、SDRAM与远距离千兆光纤模块相结合的系统构架,替代了原数据传输过程中低速、近距离、抗干扰性不强的数据通路和处理器件。软件上,通过对两片FPGA的编程,在系统后端实现了PXI接口和DMA相结合的方式与加速器服务器进行数据交互;在系统前端实现了800MHz载波100MHz基带信号的实时、远程、高速串行帧传输。通过该数据传输系统,保证新加速器系统的同步事例、电源波形等实时数据在服务器和远端控制器之间的高效传输。更多还原

【Abstract】 In order to satisfy the transmission requirements of partial synchronization data and process data for the heavy ion therapy accelerator,a high-speed,error-correction,long-distance,and real-time data transmission system was proposed and achieved.It can improve the efficiency and reliability of the accelerator control and synchronization.The system optimizes the hardware configuration and layout of the traditional system.FPGA,gigabit fiber module,PXI and SDRAM are the main parts of the system.It replaces the low-speed,short-distance,and poor anti-interference of the traditional data path and the data processing chips.Through the programming in the two FPGA chips,the PXI and DMA transmission mode was used to exchange data with the server of the accelerator.The front-end of the system achieves a real-time,long-distance,and high-speed serial frame transmission with 800 MHz carrier and 100 MHz base band signal.The real-time data like synchronous event signal,power waveform data of the heavy ion therapy accelerator can be transmitted efficiently between the server and the remote controller through the system.更多还原