吉林大学学报(工学版) ›› 2022, Vol. 52 ›› Issue (10): 2447-2455.doi: 10.13229/j.cnki.jdxbgxb20210263

• 通信与控制工程 • 上一篇    

基于多阵列合成孔径的局部超声阵列聚焦方法

陈建1(),于帆1,林琳1,孙铭会2   

  1. 1.吉林大学 通信工程学院，长春 130022
    2.吉林大学 计算机科学与技术学院，长春 130012
  • 收稿日期:2021-03-28 出版日期:2022-10-01 发布日期:2022-11-11
  • 作者简介:陈建（1977-），男，教授，博士.研究方向：人机交互，无线定位.E-mail：chenjian@jlu.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(61631010)

Local ultrasound array focusing method based on multiarray synthetic aperture

Jian CHEN1(),Fan YU1,Lin LIN1,Ming⁃hui SUN2   

  1. 1.College of Communication Engineering，Jilin University，Changchun 130022，China
    2.College of Computer Science and Technology，Jilin University，Changchun 130012，China
  • Received:2021-03-28 Online:2022-10-01 Published:2022-11-11

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摘要：

针对增大超声波阵列孔径虽然能够提高超声波聚焦的精度，但同时带来功耗和聚焦噪声的增加的问题，提出了一种基于多阵列合成孔径的局部超声阵列聚焦方法。该方法根据超声波发射器的辐射角度确定参与聚焦的发射器数目，通过减少同时工作的发射器数目降低功耗，减小噪声。对比测试了局部阵列聚焦方法和全阵列聚焦方法的聚焦精度和功耗。结果表明，相比于全阵列聚焦方法，本文所提方法的聚焦精度略有提高，聚焦强度减小了5%，但功耗降低了31%。

关键词: 通信与信息系统, 空中触觉, 超声波触觉, 超声波发射器阵列

Abstract:

Increasing the size of transducer array can improve the accuracy of focusing， but it also brings the increase of power consumption and focusing noise. To solve this problem， a local ultrasound array focusing method based on multi array synthetic aperture was proposed.The number of focused transducer was determined by proposed method according to the radiation angle of transducer， and power consumption and noise were reduced by reducing the number of transducer working at the same time. The focusing accuracy and power consumption of local array focusing method and full array focusing method are tested. The results show that， compared with the full array focusing method， the focusing accuracy of the proposed method is slightly improved， the focusing intensity is reduced by 5%， but the power consumption is reduced by 31%.

Key words: communication and information system, aerial tactile, ultrasound tactile, ultrasound transducer array

中图分类号: 

  • TN958

图1

多阵列聚焦原理示意图"

图2

超声波触觉反馈系统结构框图"

图3

驱动信号生成示意图"

图4

移位寄存器长度设置示意图（a）控制子单元ij根据系统时钟和数据发送使能信号接收计算单元发送的延迟数据Datamn 、发射器状态信号Smn 、发射器的驱动信号xIn（k）。"

图5

mn通道移位寄存器结构示意图"

图6

多通道信号延迟控制示意图"

图7

四阵列超声波触觉反馈装置"

图8

实验装置"

图9

焦点附近归一化声压分布图"

图10

不同调制频率与高度时焦点附近归一化声压分布图"

图11

系统聚焦场景"

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