| 基于1-3压电复合材料的相控聚焦系统 |
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| 引用本文： | 郝琦,何敏,王科鑫,曾德平,叶方伟.基于1-3压电复合材料的相控聚焦系统[J].压电与声光,2015,37(4):662-666. |
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| 作者姓名： | 郝琦 何敏 王科鑫 曾德平 叶方伟 |
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| 作者单位： | (1.重庆医科大学 生物医学工程学院，省部共建超声医学工程国家重点实验室培育基地，超声医学工程重庆市重点实验室,重庆 400016；,2.超声医疗国家工程研究中心,重庆 401121) |
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| 基金项目： | 国家自然科学基金委重大科学仪器设备研制专项基金资助项目(81127901)；国家自然科学基金资助项目(81201102；112744040)；国家重点基础研究发展计划（“九七三”计划）基金资助项目(2011CB707900) |
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| 摘 要： | 针对相控聚焦超声系统控制电路复杂、移相精度低， 锆钛酸铅(PZT)材料制备的换能器转换效率较低的问题。控制电路采用Verilog HDL语言将通信、倍频锁相、信号发生及信号移相功能集成在现场可编程门阵列(FPGA)中。换能器采用1-3型压电复合材料制作。实验结果显示，该相控聚焦系统提高了电路集成度与移相精度及换能器的电声转换效率。
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| 关 键 词： | 相控阵 现场可编程门阵列(FPGA) 超声聚焦 1-3压电复合材料 |
Realization of Phased Focused Ultrasound System Based on 1-3 Piezoelectric Composites |
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| HAO Qi,HE Min,WANG Kexin,ZENG Deping,and YE Fangwei.Realization of Phased Focused Ultrasound System Based on 1-3 Piezoelectric Composites[J].Piezoelectrics & Acoustooptics,2015,37(4):662-666. |
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| Authors: | HAO Qi HE Min WANG Kexin ZENG Deping and YE Fangwei |
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| Affiliation: | (1.School of Biomedical Engineering, Chongqing Medical University,State Key Lab. of Ultrasound in Medicine Engineering of Ministry training base,Ultrasound Medical Engineering Lab. of Chongqing,Chongqing 400016,China;,2.National Engineering Research Center of Medical Ultrasound,Chongqing 401121,China) |
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| Abstract: | Aiming at the complexity of the control circuitry,low phase shift accuracy and the low conversion efficiency of transducer for phased focused ultrasound system,we integrate communications,frequency lock, signal generation,signal phase shift function in a FPGA chip by Verilog HDL language.The transducer is fabricated with 1-3 piezoelectric composites.The experimental results show that the phased focused system improves the circuit integration,phase shift accuracy of circuit and electro acoustic conversion efficiency of transducer. |
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| Keywords: | phased array FPGA focused ultrasound 1-3 piezoelectric composites |
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