基于DSP的地震波信号采集仪设计
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摘要
设计一种基于数字信号处理器(DSP)的地震波数据采集仪。该仪器以TMS320VC5410A为系统运算处理器,负责针对地震波信号的数学分析。本文简单介绍了VectorSeis数字三分量检波器的优越性,给出了DSP主要外围电路(包括复位电路、电源模块、存储器控制电路)的实现,重点介绍了DSP与PC之间基于USB接口通信的软硬件实现。针对地震波信号的特点,提出了基于FFT和小波分析的包括去噪、滤波和数据压缩的数字信号处理算法。测试结果表明该仪器可以较好完成对地震波信号的采集和数据预处理的功能。
The design of a Seismic Data Acquisition System based on DSP.As an arithmetic processor in this system,the TMS320VC5410A deals with the mathematical analysis for the Seismic data.In this paper,the superiority of VectorSeis digital 3-D component seismometer is briefly introducted,some key peripheral circuits of DSP(including reset circuit,power module and memory control circuit) is given,the realization of the USB communication between DSP and ARM is detailed in software and hardware.According to the characteristics of the seismic data,some data processing algorithms based on FFT and wavelet for denoising,filtering and data compression is put forward.The test result indicates that this instrument can accomplish the functions like data acquisition and data pre-treatment to seismic waves.
The design of a Seismic Data Acquisition System based on DSP.As an arithmetic processor in this system,the TMS320VC5410A deals with the mathematical analysis for the Seismic data.In this paper,the superiority of VectorSeis digital 3-D component seismometer is briefly introducted,some key peripheral circuits of DSP(including reset circuit,power module and memory control circuit) is given,the realization of the USB communication between DSP and ARM is detailed in software and hardware.According to the characteristics of the seismic data,some data processing algorithms based on FFT and wavelet for denoising,filtering and data compression is put forward.The test result indicates that this instrument can accomplish the functions like data acquisition and data pre-treatment to seismic waves.
引文
[1]Bhattacharya S N,Dattatrayam R S.Recent advances in seismic instrumentation and data interpretation in India[J].Current Science,2000,79(9):1347-1358.
[2]INOVA公司.VectorSeis数字检波器[Z].天津:英洛瓦(天津)物探装备有限责任公司,2010.
[3]朱利.超小型精密三分量地震传感器[J].地质装备,2004,5(2):13-14.
[4]Texas Instruments.TMS320VC5402datasheet[Z].Texas Instruments,2000.
[5]Texas Instruments.TPS767D301,TPS767D318,TPS767D325[Z].Texas Instruments,2000.
[6]张大勇,王立德.基于EZ-USB实现PC机与DSP设备间的高速通信方案[J].现当电子技术,2004(1):31-33.
[7]罗兵.用DSP作地震勘探信号实时处理[J].石油工业计算机应用,2001(2):20-21.
[8]A Vassiliou.Comparison of wavelet image coding schemes for seismic data compression[A].67th SEG Annual Meeting[C],1997:1334-1337.
[9]邱立存,闻武,刘海英.TMS320C54X系列DSP上FFT运算的实现[J].微计算机信息,2005,21(7-2):34,136-137.
[2]INOVA公司.VectorSeis数字检波器[Z].天津:英洛瓦(天津)物探装备有限责任公司,2010.
[3]朱利.超小型精密三分量地震传感器[J].地质装备,2004,5(2):13-14.
[4]Texas Instruments.TMS320VC5402datasheet[Z].Texas Instruments,2000.
[5]Texas Instruments.TPS767D301,TPS767D318,TPS767D325[Z].Texas Instruments,2000.
[6]张大勇,王立德.基于EZ-USB实现PC机与DSP设备间的高速通信方案[J].现当电子技术,2004(1):31-33.
[7]罗兵.用DSP作地震勘探信号实时处理[J].石油工业计算机应用,2001(2):20-21.
[8]A Vassiliou.Comparison of wavelet image coding schemes for seismic data compression[A].67th SEG Annual Meeting[C],1997:1334-1337.
[9]邱立存,闻武,刘海英.TMS320C54X系列DSP上FFT运算的实现[J].微计算机信息,2005,21(7-2):34,136-137.
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