基于DSP与FPGA的光栅地震检波器的信号处理
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摘要
光栅地震检波器是基于光栅检测技术设计的一种新型数字传感器。它将光栅地震检波技术应用于地震勘探领域,以满足地震勘探的数字化的要求。为了控制两个AD转换器对两路信号进行同步采集,本文根据硬件描述语言VHDL的并发执行特性,在FPGA中设计了双口RAM模块进程。为了完成震动信号高倍细分算法的设计,利用DSP C语言现有的库函数实现细分值的分象限计算。因此结合FPGA与DSP分别在数据采集和运算方面的优势,对震动信号进行实时、准确的处理。
Grating geophone is a new type of digital sensor which is based on grating detecting technology.It applied the grating geophone technology in the field of seismic exploration in order to meet the digital requirements of the seismic exploration.According to the Concurrent Execution characteristic of hardware description language VHDL,designed dual-port RAM modules process in FPGA,synchronous data acquisition of two analog-to-digital converter is achieved.In order to complete the design of high power subdivision algorithm,using the existing DSP C language library functions to achieve the subdivision value calculation in separate quadrant.Therefore,combined with the special advantages of FPGA and DSP in control and calculate function respectively,vibration signals for real-time,accurate processing.
Grating geophone is a new type of digital sensor which is based on grating detecting technology.It applied the grating geophone technology in the field of seismic exploration in order to meet the digital requirements of the seismic exploration.According to the Concurrent Execution characteristic of hardware description language VHDL,designed dual-port RAM modules process in FPGA,synchronous data acquisition of two analog-to-digital converter is achieved.In order to complete the design of high power subdivision algorithm,using the existing DSP C language library functions to achieve the subdivision value calculation in separate quadrant.Therefore,combined with the special advantages of FPGA and DSP in control and calculate function respectively,vibration signals for real-time,accurate processing.
引文
[1]李淑清,南忠良.光栅微振动测试传感技术的研究[J].纳米技术与精密工程,2004,2(2):157-162.
[2]王琴,全书海.基于CPLD的双口RAM设计与应用[J].武汉理工大学学报,2005,27(4):99-105.
[3]刘清.用DSP实现光栅高准确度细分技术[J].传感器技术,2003,22(7):25-27.
[4]俞洪麟,黄良明,王远干.莫尔条纹的DSP滤波及细分技术研究[J].光电工程,2004,31(9):61-65.
[5]李晖,刘庭欣.光栅莫尔条纹的辨向和细分电路研究[J].辽宁大学学报,2003,30(2):127-128.
[6]欧阳航空,陆林海,侯彦丽.基于DSP的光栅莫尔条纹信号辨向与细分电路研究[J].制造业自动化,2005,27(5):1-5.
[7]李怀琼,陈钱,王钰,等.一种用软件来实现的莫尔条纹数字化细分技术[J].计量技术,2000(3):14-16.
[8]汪安民,陈明欣,朱明.TMS320C54xxDSP实用技术[M].北京:清华大学出版社,2007,130.
[2]王琴,全书海.基于CPLD的双口RAM设计与应用[J].武汉理工大学学报,2005,27(4):99-105.
[3]刘清.用DSP实现光栅高准确度细分技术[J].传感器技术,2003,22(7):25-27.
[4]俞洪麟,黄良明,王远干.莫尔条纹的DSP滤波及细分技术研究[J].光电工程,2004,31(9):61-65.
[5]李晖,刘庭欣.光栅莫尔条纹的辨向和细分电路研究[J].辽宁大学学报,2003,30(2):127-128.
[6]欧阳航空,陆林海,侯彦丽.基于DSP的光栅莫尔条纹信号辨向与细分电路研究[J].制造业自动化,2005,27(5):1-5.
[7]李怀琼,陈钱,王钰,等.一种用软件来实现的莫尔条纹数字化细分技术[J].计量技术,2000(3):14-16.
[8]汪安民,陈明欣,朱明.TMS320C54xxDSP实用技术[M].北京:清华大学出版社,2007,130.
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