【摘要】 为了获得分布式光纤传感信号,本文设计了一个具有数据连续采集、预处理及实时传输功能的高速数据采集系统。该系统采用双口RAM作为数据缓冲器、当前流行的PCI总线作为数据接口、FPGA实现控制逻辑。本文重点介绍高速数据采集系统在分布式光纤传感器中应用时采用的数据预处理技术、缓存及PCI总线的DMA传输功能实现等方面的内容。更多还原

【Abstract】 In order to acquire the distributed optical fiber sensing signal, a high-speed data acquisition system was designed, and it achieves continuous data collection, pretreatment and real-time transmission function. The system uses a double-port RAM as the data buffer, the popular PCI bus as the data interface and FPGA as the control logic device. This paper focuses on the data pretreatment technology, cache and PCI bus DMA transfer function areas which the high-speed data acquisition system uses in the distributed optical fiber sensor applications.更多还原