计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (33): 153-155.

• 数据库、信号与信息处理 • 上一篇    下一篇

多焦点超声相控阵在双层媒质中声场仿真

丁亚军1,2,钱盛友2,胡继文2,刘 畅3   

  1. 1.湖南师范大学 图像识别与计算机视觉研究所,长沙 410081
    2.湖南师范大学 物理与信息科学学院,长沙 410081
    3.中国科学院 深圳先进技术研究院,广东 深圳 518055
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-11-21 发布日期:2011-11-21

Simulation of sound field of multi-focus ultrasound phased array?in?double biological medium

DING Yajun1,2,QIAN Shengyou2,HU Jiwen2,LIU Chang3   

  1. 1.Institute of Image Recognition & Computer Vision,Hunan Normal University,Changsha 410081,China
    2.College of Physics and Information Science,Hunan Normal University,Changsha 410081,China
    3.Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen,Guangdong 518055,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-11-21 Published:2011-11-21

摘要: 提出了一种可对双层媒质进行声聚焦的控制方法。通过预先设定目标区域内焦点处的声压,利用遗传算法求解相控阵的驱动向量。利用声场快速算法对12×12二维相控阵在双层生物媒质中的多焦点声场模式进行仿真。结果表明遗传算法能优化多焦点模式的声场增益,声强能最大限度地聚焦在目标区域内。

关键词: 相控阵, 双层生物媒质, 声场优化, 遗传算法

Abstract: A control method of ultrasound focused on the?double biological?tissue is described.By pre-defined target area sound pressure at the focus,driven vector phased array is solved by genetic algorithm.This fast?algorithm of ultrasound field is used to simulate the multi-focus field pattern in the double biological tissue produced by two-dimensional phased array consisting of 12×12 elements.?The results show?genetic algorithm?can?optimize the multi-focus?pattern?gain of?the ultrasound field,making the?sound intensity?maximize?the concentration of the target?volume.

Key words: phased array, double biological?medium, sound field?optimization, genetic algorithm