【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,基于单片机的光栅地震检波器信号处理速度较慢,现场可编程门阵列FPGA时钟频率高,内部延时小,硬件资源丰富,在控制数据采集、转换等方面有着单片机和DSP所无法比拟的优势。为了提高光栅地震检波器的测量精度和分辨力,该文进行了基于FPGA的光栅地震检波器信号处理研究,并将软件细分原则应用于信号处理系统中。该系统基于硬件描述语言Verilog和PicoBlaze软核进行设计,在有效地减小电路板面积的同时,可实现数据的快速采集和高精度测量。更多还原

【Abstract】 Grating geophone is a new type of digital sensor which is designed based on grating detecting technology.The data acquisition systems are usually based on single chip,whose working frequency is low.The field programmable gate array,which is of high clock frequency,short time delay and an abundance of hardware resource,is superior to single chip and DSP in controlling data acquisition and conversion.To improve the measuring precision and resolution of grating geophone,the signal processing system based on FPGA is studied.Software subdivision principle is used in the system.The system is designed based on the hardware description language Verilog and the PicoBlaze soft core.In this way,the area of circuit board is reduced efficiently,and high speed acquisition and high precision measurement can be realized.更多还原