Study on Focal Laws Fast Calculation of Ultrasonic Phased Array System based on FPGA

被引：0

作者：

Tang, Wenming ^{[1
]}

Liu, Guixiong ^{[1
]}

Li, Yuzhong ^{[1
]}

Tan, Daji ^{[2
]}

机构：

[1] South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510641, Guangdong, Peoples R China

[2] Guangzhou Doppler Elect Technol Co Ltd, Guangzhou 510663, Guangdong, Peoples R China

来源：

2017 INTERNATIONAL CONFERENCE ON COMPUTER SYSTEMS, ELECTRONICS AND CONTROL (ICCSEC) | 2017年

关键词：

Real-time; Focal laws; Ultrasonic phased array; One-element higher-order equation; Interval search; FPGA;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Focal laws fast calculation is one of the key technologies in ultrasonic phased array (UPA). To improve the real-time of the focal laws applied in the UPA. In the paper, we designed a focal laws calculator by FPGA technology to calculate the time delays for the ultrasonic waves between multi-element ultrasonic sensors attached a wedge and the focus to realize the beam focusing. Allowing the time delays are associated with a series of one-element higher-order equations. And n-time interval search and CORDIC algorithm are further presented for solving the equations to calculate the time delays in real time. Experiments show that the n(n=12)-time interval search and CORDIC algorithm to calculate the focal laws can achieve a maximum relative error value of 0.434% by FPGA technology. The real-time and validity of the focal laws calculator are proved through application of the UPA, which is of great importance significances in engineering application.

引用

页码：1333 / 1338

页数：6

共 14 条

[1] [Anonymous], P 2007 INT C ULTR IC
[2] Ultrafast hardware-based focal law calculator for automatic focusing
Cruza, Jorge F.
Camacho, Jorge
Moreno, Jose M.
Fritsch, Carlos
[J]. NDT & E INTERNATIONAL, 2015, 74 : 1 - 7
[3] FERMAT THEOREM
FLETCHER, CR
[J]. HISTORIA MATHEMATICA, 1989, 16 (02) : 149 - 153
[4] 500-element ultrasound phased array system for noninvasive focal surgery of the brain: A preliminary rabbit study with ex vivo human skulls
Hynynen, K
Clement, GT
McDannold, N
Vykhodtseva, N
King, R
White, PJ
Vitek, S
Jolesz, FA
[J]. MAGNETIC RESONANCE IN MEDICINE, 2004, 52 (01) : 100 - 107
[5] Liaptsis G., 2015, E J NONDESTRUCTIVE T, V20, P1
[6] Neumann P. M., 2011, NOT AM MATH SOC, V59, P1565
[7] Dynamic focusing through arbitrary geometry interfaces
Parrilla, M.
Brizuela, J.
Camacho, J.
Ibanez, A.
Nevado, P.
Fritsch, C.
[J]. 2008 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-4 AND APPENDIX, 2008, : 1195 - 1198
[8] Peng Zeng, 2011, 2011 4th International Congress on Image and Signal Processing (CISP 2011), P2683, DOI 10.1109/CISP.2011.6100702
[9] Roy O., 2008, P 2 INT C TECHN INSP, P1
[10] Ultrasonic Phase Array and Eddy Current Methods for Diagnostics of Flaws in Friction Stir Welds
Rubtsov, Valery
Tarasov, Sergey
Kolubaev, Evgeny
Psakhie, Sergey
[J]. INTERNATIONAL CONFERENCE ON PHYSICAL MESOMECHANICS OF MULTILEVEL SYSTEMS 2014, 2014, 1623 : 539 - 542

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