一种高精度多通道USB地震数据采集器设计
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摘要
针对目前地震数据采集通道多、精度要求高的需求,设计了一种基于FPGA的多通道USB地震数据采集器。首先对地震信号进行调理以准确拾取微弱地震信号;其次,以FPGA为控制处理核心,通过8通道24位高精度模数转换(Analog-to-Digital Converter ADC)芯片ADS1278实现8路地震信号的同步高精度采样;此外,通过USB接口芯片CY7C68013A的Slave FIFO模式,实现FPGA与PC通信,完成高速数据传输与存储。实际测试表明,系统稳定可靠,性能高,采集精确,具有较强的应用价值。
In order to meet the requirements of multi-channels and high precision in seismic data acquisition desiging,a multi channel seismic data acquisition with USB interface is designed and developed based on FPGA. Firstly,the seismic signal is conditioned to pick up weak seismic signal accurately;then,FPGA worked as the controlling and processing core to control the 8-channel 24-bit precision A/D converter-ADS1278,to achieve 8-channel seismic signal high accuracy synchronous sampling. By using the USB interface chip-CY7 C68013 A,FPGA communications with the PC based on slave FIFO( First Input First Output,FIFO) mode,to complete high-speed transmission and storage. The practical test shows that the system is stable,reliable,with high performance and accurate measurement,which can meet the requirements of practical application.
In order to meet the requirements of multi-channels and high precision in seismic data acquisition desiging,a multi channel seismic data acquisition with USB interface is designed and developed based on FPGA. Firstly,the seismic signal is conditioned to pick up weak seismic signal accurately;then,FPGA worked as the controlling and processing core to control the 8-channel 24-bit precision A/D converter-ADS1278,to achieve 8-channel seismic signal high accuracy synchronous sampling. By using the USB interface chip-CY7 C68013 A,FPGA communications with the PC based on slave FIFO( First Input First Output,FIFO) mode,to complete high-speed transmission and storage. The practical test shows that the system is stable,reliable,with high performance and accurate measurement,which can meet the requirements of practical application.
引文
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[6]刘科满,张进双,王立双,等.基于USB6259和LabVIEW的井场噪声采集系统设计[J].科学技术与工程,2013,23(13):6878-6882.
[7]朱康生,洪嬴政,黄斌. ADS1278在高精度数据采集系统中的应用[J].电子设计工程,2009,4(17):24-26.
[8]马俊涛,李振宇. Slave FIFO模式下CY7C68013A和FPGA的数据通信[J].中国传媒大学学报自然科学版,2009,2(16):38-44.
[9]吴磊,郭超平,申世涛.基于CY7C68013与FPGA的便携式数据采集系统[J].计算机应用,2012,32(S1):164-166.
[10]刘志华,郭付才,彭新伟,等.基于CY7C68013A的FPGA配置和通信接口设计[J].电子技术应用,2013,2(39):18-21.
[11]赵林,孟令军,于磊,等.基于CY7C68013A的USB2. 0高速接口设计[J].电子技术应用,2014,1(40):131-13.
[12]张思杰,赵泰,汪振兴,等.基于FPGA的USB接口数据采集系统设计[J].电子技术应用,2011,5(37):98-100.
[2]李从庆,王夫运,薛兵.基于ARM和FPGA的便携式人工地震数据采集系统设计[J].电子技术应用,2011,37(1):38-41.
[3]李怀良,庹先国,刘明哲.无线遥测式数字地震仪关键技术[J].地球物理学报,2013,11(56):3673-3682.
[4]张文秀,林君,刘立超,等.分布式电磁探测宽频数据采集系统设计与实现[J].吉林大学学报(工学版),2012,6(42):1426-1431.
[5]张勇,董浩斌.基于STM32和Lab VIEW的地震数据采集卡的设计[J].电子技术应用,2012,10(38):72-74.
[6]刘科满,张进双,王立双,等.基于USB6259和LabVIEW的井场噪声采集系统设计[J].科学技术与工程,2013,23(13):6878-6882.
[7]朱康生,洪嬴政,黄斌. ADS1278在高精度数据采集系统中的应用[J].电子设计工程,2009,4(17):24-26.
[8]马俊涛,李振宇. Slave FIFO模式下CY7C68013A和FPGA的数据通信[J].中国传媒大学学报自然科学版,2009,2(16):38-44.
[9]吴磊,郭超平,申世涛.基于CY7C68013与FPGA的便携式数据采集系统[J].计算机应用,2012,32(S1):164-166.
[10]刘志华,郭付才,彭新伟,等.基于CY7C68013A的FPGA配置和通信接口设计[J].电子技术应用,2013,2(39):18-21.
[11]赵林,孟令军,于磊,等.基于CY7C68013A的USB2. 0高速接口设计[J].电子技术应用,2014,1(40):131-13.
[12]张思杰,赵泰,汪振兴,等.基于FPGA的USB接口数据采集系统设计[J].电子技术应用,2011,5(37):98-100.