电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2011年
23期
163-165
,共3页
数据采集%FPGA%USB%多通道
數據採集%FPGA%USB%多通道
수거채집%FPGA%USB%다통도
data acquisition%FPGA%USB%multi-channel
针对实现多通道测距雷达信号的数字化采集的目的.设计了一种基于FPGA和USB接口的多通道数据采集系统。该系统采用在FPGA芯片中构建多个数字逻辑模块的方法,实现对AD芯片模数转换过程的控制。并利用IP核在FPGA中构建存储器,对采样得到的数据进行缓存,最后通过USB2.0接口芯片将缓存中的采样数据及时传输至上位机。通过将该系统与多通道测距雷达相连接从而进行整机测试。测试结果证明,该系统能够实现最多8路测距雷达信号的采集,且在8路情况下的单路最高采样率达250KSPS,并能通过USB2.0接口向上位机传输各路雷达信号的采样数据。使进一步的数字信号处理成为可能。
針對實現多通道測距雷達信號的數字化採集的目的.設計瞭一種基于FPGA和USB接口的多通道數據採集繫統。該繫統採用在FPGA芯片中構建多箇數字邏輯模塊的方法,實現對AD芯片模數轉換過程的控製。併利用IP覈在FPGA中構建存儲器,對採樣得到的數據進行緩存,最後通過USB2.0接口芯片將緩存中的採樣數據及時傳輸至上位機。通過將該繫統與多通道測距雷達相連接從而進行整機測試。測試結果證明,該繫統能夠實現最多8路測距雷達信號的採集,且在8路情況下的單路最高採樣率達250KSPS,併能通過USB2.0接口嚮上位機傳輸各路雷達信號的採樣數據。使進一步的數字信號處理成為可能。
침대실현다통도측거뢰체신호적수자화채집적목적.설계료일충기우FPGA화USB접구적다통도수거채집계통。해계통채용재FPGA심편중구건다개수자라집모괴적방법,실현대AD심편모수전환과정적공제。병이용IP핵재FPGA중구건존저기,대채양득도적수거진행완존,최후통과USB2.0접구심편장완존중적채양수거급시전수지상위궤。통과장해계통여다통도측거뢰체상련접종이진행정궤측시。측시결과증명,해계통능구실현최다8로측거뢰체신호적채집,차재8로정황하적단로최고채양솔체250KSPS,병능통과USB2.0접구향상위궤전수각로뢰체신호적채양수거。사진일보적수자신호처리성위가능。
To digitize and acquire the muhi-channel range radar signal, a multi-channel data acquisition system was designed. This system was based on FPGA and USB2.0 interface, several digital logic control modules were constructed in FPGA to control the AD conversion of analog signal and data cache. The acquired data was sent from the data cache to PC through the USB2.0 interface. All these designs achieved a complete multi-channel data acquisition, storage and transmission system. It can acquire 8 channels range radar signal and its highest single-channel sample rate up to 250KSPS. With the help of USB2.0 interface chip, all acquired data can be send to PC in time for further digital signal processing.