基于多级半带滤波器的超声相控阵聚焦延时

刘桂雄; 唐文明; 谭大基

doi:10.3788/OPE.20142206.1571

您当前的位置：

首页 >

文章列表页 >

基于多级半带滤波器的超声相控阵聚焦延时

微纳技术与精密机械 | 更新时间：2020-08-13

- 基于多级半带滤波器的超声相控阵聚焦延时
- Focusing time delay of ultrasonic phased array based on multistage half-band filter
- 光学精密工程 2014年22卷第6期页码：1571-1576
- 作者机构：
  
  1. 华南理工大学机械与汽车工程学院,广东广州,中国,510640
  2. 广州多浦乐电子科技有限公司,广东广州,510663
- 作者简介：
- 基金信息：
  
  国家重大科学仪器设备开发专项资助项目（No.2013YQ230575）()
- DOI：10.3788/OPE.20142206.1571
  中图分类号： TN713;TB553
- 收稿日期：2013-12-11，
  
  修回日期：2014-02-05，
  
  纸质出版日期：2014-06-25
- 稿件说明：
移动端阅览
刘桂雄, 唐文明, 谭大基. 基于多级半带滤波器的超声相控阵聚焦延时[J]. 光学精密工程, 2014,22(6): 1571-1576

LIU Gui-xiong, TANG Wen-ming, TAN Da-ji. Focusing time delay of ultrasonic phased array based on multistage half-band filter[J]. Editorial Office of Optics and Precision Engineering, 2014,22(6): 1571-1576
刘桂雄, 唐文明, 谭大基. 基于多级半带滤波器的超声相控阵聚焦延时[J]. 光学精密工程, 2014,22(6): 1571-1576 DOI： 10.3788/OPE.20142206.1571.

LIU Gui-xiong, TANG Wen-ming, TAN Da-ji. Focusing time delay of ultrasonic phased array based on multistage half-band filter[J]. Editorial Office of Optics and Precision Engineering, 2014,22(6): 1571-1576 DOI： 10.3788/OPE.20142206.1571.

摘要

建立了基于多级半带滤波器的超声相控阵聚焦延时系统，以提高仪器延时精度。研究了聚焦延时原理与延时算法的实现。首先，采用内插滤波的方法，设计了半带滤波器作为内插滤波器；然后，对8倍内插结构进行了改进，通过多级半带内插滤波器合成技术，将合成后的滤波器分解为8个子滤波器进行同时滤波，使得内插与多相分解可同时进行。最后，通过对延时算法的仿真分析与现场可编程门阵列（FPGA）的实现，验证了此算法的可行性。实验结果表明：该系统在100 MHz采样率的条件下可实现1.25 ns延时精度，与同性能普通有限长单位冲激响应（FIR）内插滤波器相比，运算量最大可减少21.4%。此方案在运算量、计算速度、分辨率、性价比方面均具有较大优势，非常适合于实时性强、精度高的聚焦延时算法的实现。

Abstract

An ultrasonic phased focusing time delay system was established by using the multi-stage half-band filters to improve the accuracy of ultrasonic phased array instruments. The principle of the focusing time delay and the realization of the corresponding time delay algorithm were investigated. Firstly

the interpolation filter with a half-band one was used as an interpolation filter based on interpolation method. Then

the structure of the 8 × interpolation was improved. With a synthesis technique of a multi-stage half-band interpolation filter

the synthesized filter was divided into 8 sub-filters to work at the same time. In this way

both interpolation and polyphase decomposition could be simultaneously processed. Finally

the feasibility of this delay algorithm was verified by using the simulation analysis and the implementation of Field Programming Gate array(FPGA). The experimental results show that the time delay accuracy of the system is 1.25 ns at a sampling rate of 100 MHz. Comparing with the ordinary Finite Impulse Response(FIR) interpolation filter

the amount of computation with proposed interpolation filter can be reduced by 21.4% under the same condition. The program is characterized by lower computation amount

fast computing speed

excellent resolution and cost efficiency and can improve the overall performance for phased array instruments.

关键词

Keywords

references

马建设,李合银,程雪岷,等. 嵌入式自动聚焦摄像模组控制系统的设计[J]. 光学精密工程,2012,20(10): 2222-2227. MA J SH, LI H Y, CHENG X M, et al.. Control system for embedded focusing camera module [J]. Opt. Precision Eng., 2012, 20(10): 2222-2227. (in Chinese)

JORGE F C, JORGE C, LUIS S I,et al.. New method for real-time dynamic focusing through interface[J]. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2013, 60(4):739 -751.

QUAEGEBUR N, MASSON P. Correlation-based imaging technique using ultrasonic transmit-receive array for Non-destructive evaluation[J]. Ultrasonics, 2012, 52(8):1056-1064.

KO R T, CHEN M Y, HOPPE W C. Ultrasonic measurements of velocity for modulus assessment of a material using a delay line approach[J]. 39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE). 2013, (1511):1446-1453.

TAI K SONG,JAMES F. Ultrasonic dynamic focusing using an analog FIFO and asynchronous sampling [J]. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1994,41(3):326-32.

INSOO K. CMOS ultrasound transceiver chip for high-resolution ultrasonic imaging systems[J]. IEEE Transactions on Biomedical Circuits and Systems YSTEMS, 2009, 3(5): 293-303.

王平,高阳,范文政,等. 一种基于相对声程差的高精度逐点聚焦实现方法[J]. 声学学报,2012,37(5): 508-515. WANG P, GAO Y, FAN W ZH, et al.. A high precision algorithm for dynamic focusing based on relative acoustic path difference in ultrasound imaging [J]. Acta Acustica, 2012,37(5): 508-515. (in Chinese)

KHAN, ISHTIAQ R.Flat magnitude response FIR halfband low/high pass digital filters with narrow transition bands[J]. Digital Signal Processing, 2010,20(2): 328-336.

罗玉昆,罗诗途,罗飞路,等. 激光超声信号去噪的经验模态分解实现及改进[J]. 光学精密工程,2013,21(2): 480-489. LUO Y K, LUO SH T, LUO F L, et al.. Realization and improvement of laser ultrasonic signal denoising based on empirical mode decomposition[J]. Opt. Precision Eng., 2013,21(2):480-489. (in Chinese)

TAY D B H. Design of halfband filters for orthonormal wavelets using ripple-pinning [J]. IET Signal Processing,2011,5(1):40-48.

JOHN G P, DIMITRIS G M. 数字信号处理(第4版)[M]. 北京:电子工业出版社,2007. JOHN G P, DIMITRIS G M. Digital Signal Processing (Fourth Edition)[M]. Beijing: Publishing House of Electronics Industry, 2007.(in Chinese)

黄晓红,王兆华. 全相位2种半带滤波器及在滤波器组中的应用[J]. 天津大学学报,2006,39(7):820-825. HUANG X H, WANG ZH H. Two kinds of all phase half-band filter and it’s application in the filter banks[J]. Journal of Tianjin University, 2006, 39(7): 820-825. (in Chinese)

范逸鸣. 基于LUT的FPGA时序仿真的设计与实现[D]. 西安:西安电子科技大学,2012. FAN Y M. Design And Implementation of The Timing Simulation for FPGA Based on LUT [D]. Xi'an : Xi'an Electronic and Science University,2012. (in Chinese)

浏览量

385

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

水下自主航行器微光照相机驱动系统设计

基于FPGA的自适应光学波前处理算法

空间相机图像复原的实时处理

高速单像素相机数据采集系统