摘要
超声相控阵技术通过对超声阵列换能器中各阵元进行相位延时控制,获得灵活可控的合成波束及实现动态聚焦、偏转、声束形成等各种相控效果。精密聚焦延时是超声相控阵动态聚焦的核心,无论是在超声相控阵发射延迟控制还是接收延时补偿中,都需精确控制相位延时。该文介绍了国内外超声相控阵系统延时分辨率的发展历程和研究现状,并分析了各个方法的优缺点。
The flexible and controllable synthetic beams can be obtained and various phase control effects such as dynamic focusing,deflection,and sound beam formation can be realized by performing phase delay control on each array element in the ultrasonic array transducer based on theultrasonic phased array technology.The precision focusing delay is the core of ultrasonic phased array dynamic focusing.It is necessary to control the phase delayaccurately whether in ultrasonic phased array transmission delay control or reception delay compensation.The article introduces The development history and research status of the delay resolution of ultrasonic phased array system at home and abroadis introduced,and the advantages and disadvantages of each methodare analyzed.
作者
徐皓胜
曾伟
杨绍辉
曾德平
XU Haosheng;ZENG Wei;YANG Shaohui;ZENG Deping(State Key Laboratory of Ultrasound Medical Engineering,College of Biomedical Engineering,Chongqing Medical University,Chongqing Key Laboratory of Biomedical Engineering,Chongqing 400016,China;National Engineering Research Center for Ultrasound Medicine,Chongqing 401121,China)
出处
《压电与声光》
CAS
北大核心
2020年第5期668-673,共6页
Piezoelectrics & Acoustooptics
基金
重庆市自然科学基金资助项目(cstc2019jscx-msxm1422)。
关键词
超声相控阵
延时分辨率
动态聚焦
波束合成
相位延时
ultrasonic phased array
delay resolution
dynamic focusing
beam synthesis
phase delay
