摘要
设计了一种基于TI DSP TMS320C6455和Xilinx FPGA XC2V1000的多频声纳数据采集系统,各个通道采样率可通过程序独立调整。该方案将FPGA映射到DSPEMIF的一段地址空间,使用FPGA做多路ADC器件的信号采集控制和数据缓冲。DSP通过对FPGA的访问,间接控制ADC芯片完成数据的采集。经过实际测试,采用本方案设计的数据采集系统能够以不同采样率同时采集多个通道的数据,具有很强的灵活性,工作稳定可靠,已成功应用于某型声纳,并可广泛应用于多种数据采集场合。
A kind of multi_frequency sonar date acqusition system was designed based on TI DSP TMS320C6455 and Xilinx FPGA XC2V1000. The sample frequency of each channel can be adjusted by program independently. FPGA is mapped into the memory space of DSP. The controlling units of all ADCs are implemented in FPGA, which also works as buffers of the data. DSP completes the data acqusition of multi_frequency signals indirectly by accessing FPGA. This system allows each channel to complete the data acqusition of signals with its own sample frequency at the same time. It’s very flexible and stable .This system has been applied in a certain type of sonar system successfully, and also can be widely used in many another fields of data acqusition.
出处
《微计算机信息》
2011年第12期12-14,共3页
Control & Automation
