电子测试
電子測試
전자측시
ELECTRONIC TEST
2012年
8期
82-85
,共4页
CRC校验%FPGA%数据采集
CRC校驗%FPGA%數據採集
CRC교험%FPGA%수거채집
cyclical redundancy check%FPGA%data acquisition
在激光光幕坐标靶的测试中,采用FPGA作为坐标数的数据采集和存储装置,为了克服其占用资源多、扩展性不强等特点,采用FPGA处理I/O数据,并通过并行算法的CRC校验与主控FPGA交换I/O信息的方法实现数据的存储。为了保证并行I/O数据传输的可靠性,用Verilog实现了并行算法CRC-32校验编码,给出了正确的仿真结果。在实际应用中,该校验器速度快,占用资源少,该方法实现了对数据的有效传输,具有I/O扩展的高度灵活性,为大面积坐标靶的实现提供可靠的理论基础。
在激光光幕坐標靶的測試中,採用FPGA作為坐標數的數據採集和存儲裝置,為瞭剋服其佔用資源多、擴展性不彊等特點,採用FPGA處理I/O數據,併通過併行算法的CRC校驗與主控FPGA交換I/O信息的方法實現數據的存儲。為瞭保證併行I/O數據傳輸的可靠性,用Verilog實現瞭併行算法CRC-32校驗編碼,給齣瞭正確的倣真結果。在實際應用中,該校驗器速度快,佔用資源少,該方法實現瞭對數據的有效傳輸,具有I/O擴展的高度靈活性,為大麵積坐標靶的實現提供可靠的理論基礎。
재격광광막좌표파적측시중,채용FPGA작위좌표수적수거채집화존저장치,위료극복기점용자원다、확전성불강등특점,채용FPGA처리I/O수거,병통과병행산법적CRC교험여주공FPGA교환I/O신식적방법실현수거적존저。위료보증병행I/O수거전수적가고성,용Verilog실현료병행산법CRC-32교험편마,급출료정학적방진결과。재실제응용중,해교험기속도쾌,점용자원소,해방법실현료대수거적유효전수,구유I/O확전적고도령활성,위대면적좌표파적실현제공가고적이론기출。
The FPGA was used as the coordinate acquisition and collection equipment in the laser screen coordinate measurement.To overcome these disadvantages,which take up many hardware resources and make the number of Input/Output ports hard to be extended,All I/O extension method is introduced using a FPGA to access the I/O,and exchange I/O information with main controller FPGA by parallel protocol.How to ensure the reliability of parallel I/0 data transmission using cyclical redundancy check（CRC）is discussed.The algorithm is described by verilog with simulation results.T he result of the experiment show ed that this CRC module has a high speed,less resources consumption,The practical application results show that this method can realize the processing of a large number of I/O data,not only with high flexibility of I/O extension,but also with high reliability of data transmission.It Provide a reliable theoretical basis for the realization of large-area coordinates of the target.
