基于FPGA的数字带通滤波器设计与仿真OACSTPCD
Design and simulation of digital bandpass filter based on FPGA
为快速准确地提取超声导波信号中的目标信息,采用流水线加法树阵列结构设计低阶滤波器,采用直接型低阶叠加实现20阶高精度带通滤波器.运用流水线技术与FPGA片上资源相结合实现对该结构数字算法优化,并将其应用在镍铬合金超声导波测温系统中.结果表明:所设计的滤波器对512点的混频超声导波信号滤波耗时约1047个时钟.该滤波器总体设计简单,可以达到实时滤波的功能.
In order to quickly and accurately extract target information in ultrasonic guided wave signal,pipeline addition tree array structure is used to design low-order filter,and direct low-order stack is used to realize 20-order high-precision bandpass filter.The digital algorithm of this structure is optimized by combining Pipeline technology and FPGA on-chip resources,and it is applied in nickel-chromium alloy ultrasonic guided wave temperature measurement system.The results show that the designed filter can take about 1047 clocks to filter a 512-point mixed ultrasonic guided wave signal.The overall design of this filter is simple and can achieve real-time filtering function.
闫慧欣;杨录;李少聪;滕生超;左天乐;吕俊文
中北大学 信息与通信工程学院, 山西 太原 038507
电子信息工程
FPGA数字带通滤波器超声导波检测技术FIR滤波器流水线结构加法树阵列实时滤波
FPGAdigital bandpass filterultrasonic guided wave detection technologyFIR filterpipeline structureaddition tree arrayreal-time filtering
《现代电子技术》 2024 (002)
7-10 / 4
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