真双口RAM环形缓存的滑窗式数据处理系统  

Sliding Window Data Processing System Based on True Dual-port RAM Ring Buffer

作　　者：张鑫刚 薛培 邵春伟 Zhang Xingang;Xue Pei;Shao Chunwei(Wuxi Hope Microelectronics Co.,Ltd.,Wuxi 214035,China)

机构地区：[1]无锡华普微电子有限公司,无锡214035

出　　处：《单片机与嵌入式系统应用》2022年第10期47-51,共5页Microcontrollers & Embedded Systems

摘　　要：提出一种用真双口RAM操作地址首末相连实现环形缓存,用滑动窗口对输入环形缓存的时序数据进行分段的数据处理系统。通过采用突发模式将实时数据写入环形缓存中,减少环形缓存写入时重复输入RAM操作地址产生的时序消耗,相比单字节模式速率提高49.9%。通过在环形缓存上预留1 MB缓存区域,使系统在写入环形缓存数据速率在12~20 Mb/s范围内不恒定情况下仍能正常工作,提高系统适用性。将其部署在FPGA上,验证结果表明,系统能够满足电子系统实时数据分段计算要求。In the paper,a data processing system is proposed that uses true dual-port RAM operation addresses to connect end-to-end to realize a ring buffer,and uses a sliding window to segment the time series data input to the ring buffer.By using burst mode to write realtime data into the ring cache,the timing consumption caused by repeated input of RAM operation addresses when the ring cache is written is reduced,and the rate is increased by 49.9%compared to the single-byte mode.By reserving a 1 MB buffer area on the ring buffer,the system can still work normally when the data rate of writing to the ring buffer is not constant within the range of 12~20 Mb/s,and the system applicability is improved.The verification of deployment on FPGA shows that the system meets the real-time data segmentation calculation requirements of the electronic system.

关 键 词：环形缓存 突发模式 滑动窗口 FPGA 数据流抽取 

分 类 号：TN914[电子电信—通信与信息系统]